Method, system and device for pretreating and feeding mineral aggregate of top-blown furnace

Abstract

The invention relates to the technical field of top-blown furnace smelting, and discloses a top-blown furnace mineral aggregate pretreatment and feeding method, system and device, and the method comprises the steps that low-temperature flue gas is used for heat supply; when the coarse-grain mineral aggregate enters the drying device to be treated, the low-temperature flue gas is used for supplying heat, and dried mineral aggregate is obtained; the dried mineral aggregate is conveyed to a ball mill, and preheated mineral powder is obtained; collecting real-time mineral aggregate pretreatment data when mineral aggregate enters a drying device and mineral aggregate powder is added into a preheating device, inputting real-time mineral aggregate pretreatment into a mineral aggregate treatment numerical model, and performing numerical simulation calculation on a flue gas heat exchange process and mineral and mineral powder heating and movement to obtain the influence of mineral aggregate process parameters; adjusting based on the influence of mineral aggregate process parameters; the system comprises a mineral aggregate processing module, a mineral aggregate simulation calculation module and a parameter adjustment module. According to the invention, mineral aggregate pretreatment can be carried out more efficiently, many defects of a traditional feeding method are overcome, and waste heat of low-temperature flue gas is recycled.

Description

Technical Field

[0001] The invention relates to the technical field of top-blown furnace smelting, and in particular to a method, system and device for pretreating and feeding ore materials into a top-blown furnace. Background Art

[0002] As an important process, top-blown molten pool smelting is widely used in heavy metal smelting industry and steel smelting industry. Top-blown furnace uses solid materials such as metal concentrate as raw materials. In order to improve smelting efficiency, it is usually necessary to crush the materials with larger particle size before putting them into the furnace. Ball mill is a common ore crushing equipment. However, since the ore usually contains a certain amount of water, the powder will stick together during the crushing process, affecting the ball milling efficiency and even causing equipment blockage. Therefore, it is necessary to pre-treat the ore to reduce its water content, so that the ore is brittle and easy to crush.

[0003] In most cases, the mineral raw materials required for the operation of the top-blown furnace are fed through the feeding port at the top of the top-blown furnace and then freely fall into the molten pool. This feeding method has many disadvantages. First, due to the need for flue gas exhaust, the top-blown furnace usually maintains a negative pressure state, and the ore powder in the falling process is easily sucked out of the furnace with the flue gas, resulting in a waste of raw materials (in a large top-blown furnace, the height difference between the feed port and the surface of the molten pool is usually more than 10m; second, the ore powder fed from the feed port is distributed in a concentrated space, resulting in the frequent accumulation of ore on the surface of the molten pool, which is not conducive to the rapid progress of the smelting reaction; third, in order to avoid the escape of smoke and high-temperature flue gas, the feed port needs to be closed after feeding, which means that the feed port needs to be opened and closed repeatedly during the smelting process. This is not conducive to the continuous progress of the smelting process, and will increase the time and labor costs while increasing the risk of failure of the furnace; fourth, the ore powder released during the feeding process will bring unavoidable low-altitude pollution and endanger the health of the operators. In the current actual production, the ore granulation can be used to avoid the problem of escaping and dusting, which will in turn generate new equipment costs and time costs. In addition, the melting speed and reaction speed of the granulated ore powder will slow down, which is not conducive to the efficient progress of the smelting operation.

[0004] Prior art 1, Chinese patent, patent number: 202411290926.9 discloses a closed automatic conveying system and method for tin smoke, which is automatically controlled by a PLC control system. The smoke bin receives the smoke particles; the feeding tank is arranged below the smoke bin and connected to the smoke bin; the feeding tank is connected to the top-blowing furnace through an air delivery pipe; the purge part is connected in parallel with the air delivery pipe to blow compressed air into its inner cavity; the pressure relief part connects the smoke bin and the inner cavity of the feeding tank through a pipeline to balance the pressure; the vulcanization part vulcanizes the smoke particles in the feeding tank. Although the air conveying pipe is purged by the purge part before the smoke dust is transported, and then the smoke dust particles in the smoke dust bin are transported to the feeding tank, after the amount of smoke dust in the feeding tank reaches the design value, the pressure relief part is opened to relieve the pressure on the smoke dust bin and the feeding tank, and then the smoke in the feeding tank is sulfurized by the vulcanization part, and finally the feeding tank transports the smoke dust particles to the top-blown furnace through the air conveying pipe for reduction smelting of the smoke dust particles; however, it cannot meet the smoke gas removal requirements, resulting in waste of raw materials.

[0005] Prior art 2, Chinese patent, patent number: 202411251063.4, relates to the field of copper metallurgical process technology, and discloses a method and device for strengthening copper smelting by self-heating with sulfur instead of carbon and chaotic stirring. The method includes using non-contact measurement technology to monitor the furnace temperature in real time; adjusting the addition of ore according to the real-time monitored furnace temperature, inputting the added ore ratio into the sulfur-oxygen matching program, and calculating the minimum threshold of oxygen intake; inputting the real-time monitored furnace temperature, slag thickness, copper matte thickness and the minimum threshold of oxygen intake into the nonlinear chaotic flow calculation program, and calculating the injection speed, oxygen supply concentration and injection angle; after the smelting process, according to the adjustment of injection speed, oxygen concentration and injection angle, real-time feedback is given to the furnace temperature. The device includes a furnace top area, a furnace body area, a furnace cylinder area, a furnace wall, a feed port, an ascending flue, a secondary air blowing gun, a copper matte discharge port, a side blowing gun, a slag discharge chamber flue, and a slag discharge port. Although it helps to improve the energy utilization, production efficiency and product quality of the smelting process, the mineral powder fed into the feeding port is distributed in a relatively concentrated space, resulting in the frequent accumulation of mineral materials on the surface of the molten pool, which is not conducive to the rapid progress of the smelting reaction.

[0006] Prior art three, Chinese patent, patent number: 202411174173.5 relates to the technical field of ore-bearing furnaces, specifically to an automatic control method and system for loading and unloading ore-bearing furnaces, including: a single-chip microcomputer, a perception layer, a control layer, and a correction layer; the single-chip microcomputer controls the operation of the perception layer, and when the perception layer is in operation, the furnace state parameters of the ore-bearing furnace and the operating state parameters of the feeding station of the ore-bearing furnace are collected through the perception layer, and the control layer receives the furnace state parameters and the operating state parameters of the feeding station perceived by the perception layer in real time, and sets the control logic of the feeding station of the ore-bearing furnace based on the furnace state parameters and the operating state parameters of the feeding station, and brings intelligent control logic to the feeding station of the ore-bearing furnace through real-time perception of the operating state parameters and the furnace state parameters of the feeding station of the ore-bearing furnace. Although the loading stroke of the ore-arc furnace can be adjusted in real time according to the actual situation of the ore conveying and the actual situation inside the ore-arc furnace, thereby realizing dynamic control of the loading station of the ore-arc furnace; however, the feeding port needs to be opened and closed repeatedly during the smelting process; this is not conducive to the continuous progress of the smelting process, and will increase the time and labor costs while increasing the risk of failure of the furnace.

[0007] At present, the existing technologies 1, 2 and 3 cannot meet the demand for smoke removal, the mineral powder fed into the feeding port is spatially distributed in a relatively concentrated manner, and the feeding port needs to be repeatedly opened and closed during the smelting process. In order to solve the above problems, the present invention provides a top-blown furnace mineral material pretreatment and feeding method, system and device. Summary of the invention

[0008] The main purpose of the present invention is to provide a top-blown furnace ore pretreatment and feeding method, system and device to solve the problems in the prior art that the smoke removal requirements cannot be met, the ore powder fed into the feeding port is spatially distributed in a relatively concentrated manner, and the feeding port needs to be repeatedly opened and closed during the smelting process.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A method for pre-treating and feeding ore material of a top-blown furnace comprises the following steps:

[0011] The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the electric field collects the dust is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder;

[0012] Retrieve historical material preprocessing data, and build a material processing numerical model based on the historical material preprocessing data; collect real-time material preprocessing data of the material entering the drying device and the material powder being added to the preheating device, and convert the real-time material preprocessing data;

[0013] The converted real-time ore pretreatment is input into the ore processing numerical model to perform numerical simulation calculations on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and the process effect is affected by the ore process parameters; adjustments are made based on the influence of the ore process parameters;

[0014] Among them, the process is affected by the mineral process parameters including waste heat flue gas flux and temperature, material particle size, heating chamber and agitator speed, etc.

[0015] As a further improvement of the present invention, the process of finally obtaining the preheated mineral powder specifically includes the following steps:

[0016] The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the electric field collects the dust is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heat supply to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder;

[0017] The coarse-grained ore is transported from the drying device to the ball mill by conveyor belt or screw belt. After the ball mill crushes the ore into powder, it is transported to the ore preheating device by pneumatic transmission and preheated by low-temperature flue gas.

[0018] The preheated ore powder is obtained, and the preheated ore is pneumatically conveyed to the furnace wall feeding device to complete the feeding operation.

[0019] As a further improvement of the present invention, the process of converting the real-time mineral material preprocessing data specifically includes the following steps:

[0020] A material processing model is constructed according to the geometric characteristic parameters of the drying device and the preheating device, and the material processing model is divided into three-dimensional grids; the parameters corresponding to each grid are initialized to obtain the initialized material processing model, and historical material preprocessing data is retrieved;

[0021] Extracting key process parameters from historical mineral material preprocessing data, and determining initial state parameters according to the key process parameters in the historical mineral material preprocessing data as state parameters corresponding to the start time of the first preset state;

[0022] Among them, the key process parameters include waste heat flue gas flux and temperature, material particle size, heating chamber and stirring paddle speed, etc.;

[0023] Taking the first preset state as the initial condition, the mineral material processing model is used to obtain the state parameters of the mineral material processing at each moment under the initial condition in real time until the drying device is turned off.

[0024] As a further improvement of the present invention, the process until the drying device is turned on specifically includes the following steps:

[0025] According to the material processing model, the state parameters of the material processing at each moment under the initial conditions are obtained in real time until the drying device is turned off, and a first state set is obtained; and the state parameter corresponding to the moment when the drying state is turned on is used as the first state parameter;

[0026] Using the ore processing model to obtain the state parameters of the ore at each moment in the second preset state in real time based on the first state parameters until the preheating device is turned off, thereby obtaining a second state set;

[0027] The relationship between the mineral materials is analyzed based on the first state set, the second state set and the historical mineral material data, and the relationship between the process effect and the influence of the mineral material process is studied.

[0028] As a further improvement of the present invention, the process of obtaining the process effect affected by the mineral material process parameters specifically includes the following steps:

[0029] The converted real-time ore pretreatment data is input into the ore processing numerical model to perform numerical simulation on the flue gas heat exchange process and the heating and operation of minerals and ore powder, and to perform control calculation on the gas flow;

[0030] The flue gas heat transfer is calculated based on the gas flow; the movement of the ore and the ore powder is calculated based on the gas flow and the heat transfer calculation results; the DEM soft ball model is used to simulate the particle-particle contact force;

[0031] For the heating conditions of the ore and ore powder during the drying and waste heat process, the heat transfer between two particles in contact with each other or between a particle and the wall of the device is calculated, and it is concluded that the process effect is affected by the ore process parameters; adjustments are made based on the influence of the ore process parameters;

[0032] As a further improvement of the present invention, the process of adjusting based on the influence of the mineral material process parameters specifically includes the following steps:

[0033] Analyze the influence of the process parameters on the process effect and obtain the adjustment parameters; calculate the first loss value based on the adjustment parameters and the real adjustment parameters obtained in advance;

[0034] Calculate the loss value based on the simulation results of the ore processing model and the real-time real mode adjustment parameters obtained in advance; wherein the real adjustment value includes the real parameter adjustment parameter and the real mode adjustment parameter;

[0035] By minimizing the sum of the first loss value and the second loss value, the ore processing model is updated to obtain the optimal process parameter combination.

[0036] To achieve the above object, the present invention also provides the following technical solutions:

[0037] A top-blown furnace ore pretreatment and feeding system, comprising:

[0038] The ore processing module is used to use the low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the dust is collected by the electric field as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder;

[0039] The ore simulation calculation module is used to retrieve historical ore preprocessing data and build a ore processing numerical model based on the historical ore preprocessing data; collect the real-time ore preprocessing data of the ore entering the drying device and the ore powder being added to the preheating device, and convert the real-time ore preprocessing data;

[0040] The parameter adjustment module is used to input the converted real-time ore pretreatment into the ore processing numerical model to perform numerical simulation calculations on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and obtain the influence of ore process parameters on the process effect; and make adjustments based on the influence of ore process parameters;

[0041] Among them, the process is affected by the mineral process parameters including waste heat flue gas flux and temperature, material particle size, heating chamber and agitator speed, etc.

[0042] To achieve the above object, the present invention also provides the following technical solutions:

[0043] A top-blown furnace ore pretreatment and feeding device, which is applied to the top-blown furnace ore pretreatment and feeding method according to any one of claims 1 to 6, characterized in that the top-blown furnace ore pretreatment and feeding device comprises: an execution part and a control part;

[0044] The execution part includes the silo, drying device, ball mill, preheating device, feeding device and waste heat flue gas path; the coarse-grained ore is transported to the drying device and from the drying device to the ball mill by conveyor belt or screw belt. After being crushed into ore powder by the ball mill, it is transported to the ore powder preheating device by pneumatic conveying; the preheated ore powder is transported to the feeding device on the furnace wall by pneumatic conveying to complete the feeding operation;

[0045] The control part includes: silo discharge quantity control, drying device speed and flue gas flow control, preheating device speed and flue gas flow control and feeding device feeding control.

[0046] As a further improvement of the present invention, the drying device includes a drying chamber and a heating chamber. The drying chamber is an inclined cylinder, and the front and rear ends are connected to the base through bearings respectively to enable it to rotate; a feeding port is opened at the higher end of the cylinder, and several small holes are opened on the feeding port cover and the wall of the higher end as steam outlets; a bevel gear ring is fixedly connected to the outside of the cylinder body; a unloading port is opened at the lower end, which cooperates with the cover plate to complete the unloading work; the heating chamber is a cylinder nested on the outer side of the rear part of the drying chamber, and is connected to the drying chamber through a sealing structure and bearings; a smoke inlet and a smoke outlet are opened at both ends of the heating chamber, and are fixed to the base through the support below; the driving motor is connected to the bevel gear ring.

[0047] As a further improvement of the present invention, the preheating device comprises two hollow cylinders nested in each other, the inner layer is provided with a spiral belt stirring paddle to stir the mineral powder so that the mineral powder is evenly heated; the waste heat boiler flue gas is introduced into the outer layer to provide a heat source for preheating, and the mineral powder enters the inner cylinder from the mineral powder inlet. After uniform heating, the blanking valve is opened, and the mineral powder falls out from the discharge port and enters the top-blown furnace through pneumatic conveying;

[0048] The feeding device of the top-blown furnace wall is on the side wall of the top-blown furnace where the side-blowing lance is located and a group of feeding pipes are set along the outer wall of the furnace body below the molten pool. The ore powder crushed by the ball mill is sprayed into the furnace through pneumatic conveying, so that it falls into the molten pool quickly and evenly to participate in the reaction.

[0049] The present invention proposes a method, system and device for pre-treating and feeding ore materials in a top-blown furnace. Subsequently, a new type of fully automatic feeding method is proposed in which a feeding port is opened on the furnace wall of the top-blown furnace for feeding; through this system and method, ore pre-treatment can be performed more efficiently, many drawbacks of traditional feeding methods can be solved, and the waste heat of low-temperature flue gas can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the steps of an embodiment of a method for pretreating and feeding a top-blown furnace ore material of the present invention;

[0051] Figure 2 It is a specific principle diagram of the ore processing workflow of one embodiment of the ore pretreatment and feeding method for a top-blown furnace of the present invention;

[0052] Figure 3 A flowchart of the steps of finally obtaining preheated ore powder according to an embodiment of a method for pretreating and feeding ore for a top-blown furnace according to the present invention;

[0053] Figure 4 It is a specific principle diagram of the execution part of an embodiment of the method for pre-treating and feeding ore of a top-blown furnace of the present invention;

[0054] Figure 5A flowchart of the steps of converting real-time ore preprocessing data in one embodiment of the top-blown furnace ore preprocessing and feeding method of the present invention;

[0055] Figure 6 A flowchart of steps of an embodiment of a method for pre-treating and feeding ore from a top-blown furnace of the present invention to starting a drying device;

[0056] Figure 7 A flowchart of a method for pretreating and feeding a top-blown furnace ore material according to an embodiment of the present invention, showing that the process effect is affected by the process parameters of the ore material;

[0057] Figure 8 A flowchart of an embodiment of a method for pre-treating and feeding ore for a top-blown furnace according to the present invention, in which an adjustment is made based on the influence of ore process parameters;

[0058] Fig. 9 It is a functional module schematic diagram of an embodiment of a top-blown furnace ore pretreatment and feeding system of the present invention;

[0059] Fig.10 It is a functional module schematic diagram of an embodiment of a drying device of an embodiment of a top-blown furnace ore pretreatment and feeding system of the present invention;

[0060] Fig.11 This is a functional module schematic diagram of an embodiment of a preheating device of an embodiment of a top-blown furnace ore pretreatment and feeding system of the present invention;

[0061] Fig.12 This is a functional module schematic diagram of a top-blown furnace wall feeding device of an embodiment of a top-blown furnace ore pretreatment and feeding system of the present invention;

[0062] Fig.13 It is a structural schematic diagram of an embodiment of an electronic device of the present invention;

[0063] Fig.14 It is a schematic structural diagram of an embodiment of the storage medium of the present invention. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] The terms "first", "second" and "third" in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0066] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0067] like Figure 1 As shown, this embodiment provides an embodiment of a method for pre-treating and feeding a top-blown furnace ore. In this embodiment, the method for pre-treating and feeding a top-blown furnace ore specifically includes the following steps:

[0068] Step S1: The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat once and the dust is collected by the electric field is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transferred to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder;

[0069] Step S2: Retrieving historical mineral material preprocessing data, and constructing a mineral material processing numerical model based on the historical mineral material preprocessing data; collecting real-time mineral material preprocessing data of mineral material entering the drying device and mineral material powder being added to the preheating device, and converting the real-time mineral material preprocessing data;

[0070] Step S3: Input the converted real-time ore pretreatment into the ore processing numerical model to perform numerical simulation calculations on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and obtain the influence of ore process parameters on the process effect; make adjustments based on the influence of ore process parameters;

[0071] Among them, the process is affected by the mineral process parameters including waste heat flue gas flux and temperature, material particle size, heating chamber and agitator paddle speed, etc.

[0072] Preferably, in step S1 of this embodiment, by introducing the kiln flue gas into the waste heat boiler for electric field dust collection and using low-temperature flue gas for heating, efficient recovery and utilization of flue gas waste heat is achieved; when the mineral material enters the drying device, the low-temperature flue gas provides heat to evaporate the moisture in the mineral material and achieve a drying effect. Subsequently, the dried mineral material enters the ball mill and is ground into powder, and is further preheated by the low-temperature flue gas to finally obtain preheated mineral powder; by adjusting the process parameters such as the flux and temperature of the waste heat flue gas, the particle size of the material, the heating bin and the speed of the stirring paddle, the drying and preheating effects of the mineral material can be optimized, thereby improving the quality and output of the final product. In step S2, historical mineral material pretreatment data is retrieved to construct a numerical model for mineral material processing; real-time mineral material pretreatment data is collected and input into the numerical model; by combining historical data and real-time data, the mineral material processing process parameters are optimized to improve process stability and efficiency; the application of numerical models realizes real-time monitoring and adjustment of the process and improves the level of production management. In step S3, the real-time mineral pretreatment data is input into the numerical model, and the flue gas heat exchange process and the heating and movement of minerals and mineral powder are numerically simulated and calculated; the process parameters, such as waste heat flue gas flux, temperature, material particle size, heating bin and stirring paddle speed, are adjusted according to the simulation results; this embodiment uses numerical simulation to accurately control the process parameters to ensure that the process effect is optimal; the optimized process parameters help to improve the quality and output of the mineral powder; and by adjusting the process parameters, energy consumption is reduced and production costs are reduced. This embodiment achieves high efficiency, energy saving and intelligent processing of ore materials through low-temperature flue gas heating, numerical model optimization and real-time data monitoring; the system uses low-temperature waste heat to dry the ore materials before crushing them to make them brittle, which improves the crushing efficiency and greatly reduces the probability of blockage of the ball mill, and can save maintenance time and increase the life of the equipment; improve production efficiency: the present invention replaces the traditional feeding method with furnace wall feeding, and crushes and preheats the ore materials before entering the furnace so that they can reach the reaction temperature faster after entering the top-blown furnace, and participate in the molten pool reaction more fully and quickly; efficient use of resources: first, the furnace wall feeding method proposed in the present invention can effectively avoid the waste of raw materials caused by the escape of ore materials, and fundamentally improve the utilization rate of mineral resources; second, the drying device and preheating device of the present invention both use the exhaust gas of the waste heat boiler as the heat source, which realizes the effective utilization of low-grade waste heat resources; third, the optimization control strategy guided by CFD and DEM numerical simulation can control the process parameters of the whole process according to different working conditions to maximize the utilization of energy and resources (for specific principles, refer to the attached Figure 2 ).

[0073] Furthermore, if Figure 3 As shown, the process of finally obtaining the preheated mineral powder in step S1 specifically includes the following steps:

[0074] Step S11: The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat once and the dust is collected by the electric field is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder;

[0075] Step S12: The coarse-grained ore is transported to the drying device and from the drying device to the ball mill by a conveyor belt or a screw belt; the ore powder is crushed into ore powder by the ball mill and then transported to the ore preheating device by pneumatic transmission, and preheated by low-temperature flue gas;

[0076] Step S13: obtaining preheated ore powder, and pneumatically conveying the preheated ore to the furnace wall feeding device to complete the feeding operation.

[0077] Preferably, in step S11 of this embodiment, the waste heat of the furnace flue gas is used for electric field dust collection, which improves energy utilization efficiency and reduces energy waste; and the low-temperature flue gas is used for heating to dry the coarse-grained mineral material, which reduces energy consumption and improves the drying efficiency of the mineral material; the dried mineral material is sent to a ball mill for grinding to obtain mineral powder, providing qualified raw materials for subsequent processes; in step S11, the heat in the flue gas is recovered by the waste heat boiler and used for drying and heating the mineral material, which meets the requirements of energy saving and consumption reduction. In step S12, a conveyor belt or screw belt transportation method is adopted to ensure the smooth transportation of materials between different equipments and reduce material loss; the mineral powder crushed by the ball mill is pneumatically transmitted to the preheating device, which improves the transportation efficiency and uniformity of the material; the preheating device uses low-temperature flue gas to preheat the mineral powder, which improves the reaction rate and thermal efficiency of the subsequent process; the conveyor belt and screw belt transportation methods are suitable for materials of different particle sizes and humidity, ensuring the continuity and stability of transportation; in step 12, the mineral powder is sent to the preheating device through the pneumatic transmission system, which reduces the loss of materials during the transportation process and improves the transportation efficiency; the mineral powder is preheated by using low-temperature flue gas, which reduces energy consumption and improves the reaction rate. In step S13, the preheated mineral powder is pneumatically conveyed to the furnace wall feeding device to complete the feeding operation, ensuring the smoothness of the production process; the preheated mineral powder has a higher reaction activity, which helps to improve the quality and output of the final product; this embodiment uses a pneumatic conveying system to feed the preheated mineral powder into the furnace wall feeding device, which reduces manual intervention and improves production efficiency; the pneumatic conveying system can achieve fast and uniform feeding, ensuring the stability and uniformity of the reaction in the furnace. The process flow of this embodiment achieves efficient energy utilization and environmental protection goals through technical means such as waste heat utilization and low-temperature heating. At the same time, modern equipment such as conveyor belts, screw belt transportation and pneumatic transmission are used to ensure the efficiency and stability of material transportation. In addition, the application of the preheating process significantly improves the reaction rate and product quality, meeting the requirements of modern industrial production (for specific principles, refer to the attached Figure 4 ).

[0078] Furthermore, if Figure 5 As shown, the process of converting the real-time mineral material preprocessing data in step S2 specifically includes the following steps:

[0079] Step S21: constructing a material processing model according to the geometric characteristic parameters of the drying device and the preheating device, dividing the material processing model into three-dimensional grids; initializing the parameters corresponding to each grid to obtain the initialized material processing model, and retrieving historical material preprocessing data;

[0080] Step S22: extracting key process parameters from historical mineral material preprocessing data, and determining initial state parameters according to the key process parameters in the historical mineral material preprocessing data as state parameters corresponding to the start time of the first preset state;

[0081] Among them, the key process parameters include waste heat flue gas flux and temperature, material particle size, heating chamber and standard plate speed, etc.

[0082] Step S23: Taking the first preset state as the initial condition, the mineral material processing model is used to obtain the state parameters of the mineral material processing at each moment under the initial condition in real time until the drying device is turned off.

[0083] Preferably, this embodiment constructs a mineral material processing model based on the geometric characteristic parameters of the drying device and the preheating device, and divides the model into three-dimensional grids to more accurately simulate the processing process of the mineral material in the device; initializes the parameters corresponding to each grid to obtain the initialized mineral material processing model, and retrieves historical mineral material preprocessing data to provide a basis for subsequent process parameter extraction and initial state setting; extracts key process parameters (such as waste heat flue gas flux and temperature, material particle size, heating bin and standard plate speed, etc.) from historical mineral material preprocessing data, and determines the initial state parameters based on these parameters as the state parameters corresponding to the starting time of the first preset state; takes the first preset state as the initial condition, and uses the mineral material processing model to obtain the state parameters of the mineral material processing at each moment under the initial conditions in real time until the drying device is turned off. Through three-dimensional grid division and the call of historical data, this embodiment can more accurately simulate the processing process of mineral materials in the device, improve the accuracy and prediction ability of the model, and thus optimize the process parameter setting; the extracted key process parameters (such as waste heat flue gas flux and temperature, material particle size, etc.) can help better control the process and ensure the stability and efficiency of the mineral material processing process; real-time acquisition of state parameters and optimization of process parameters can reduce energy waste, improve drying efficiency, and thus reduce production costs; using the model for real-time calculation and state monitoring can realize intelligent management of the mineral material processing process, reduce manual intervention, and improve production efficiency.

[0084] Furthermore, if Figure 6As shown, the process from step S23 until the drying device is turned on specifically includes the following steps:

[0085] Step S231: obtaining the state parameters of the material processing at each moment in real time and under the initial conditions according to the material processing model until the drying device is turned off, and obtaining a first state set; and taking the state parameter corresponding to the moment when the drying state is turned on as the first state parameter;

[0086] Step S232: using the ore processing model to obtain the state parameters of the ore at each moment in the second preset state in real time based on the first state parameters until the preheating device is turned off, thereby obtaining a second state set;

[0087] Step S233: Analyze the relationship between the mineral materials according to the first state set, the second state set and the historical mineral material data, and learn the relationship between the process effect and the influence of the mineral material process.

[0088] Preferably, in step S231 of this embodiment, the material processing state parameters under the initial conditions are obtained in real time through the material processing model, and recorded until the drying device is turned off to form a first state set; the state parameters corresponding to the drying state start time are used as the first state parameters, which indicates that the system can dynamically adjust the state parameters according to the key nodes in the actual operation; in step S232, based on the first state parameters, the material processing model is continued to be used to obtain the material state parameters under the second preset state in real time until the preheating device is turned off to form a second state set; dynamic optimization is performed based on the first state parameters to ensure that the state parameters of the material at different process stages can adapt to the subsequent process requirements; step S233 analyzes the relationship between the first state set and the second state set and the historical material data to learn the relationship between the process effect and the influence of the material process. The real-time data acquisition and processing technology of this embodiment enables the state parameters in the mineral material processing process to be updated and adjusted in a timely manner, thereby improving production efficiency and process stability; dynamic adjustment of state parameters helps to reduce human intervention and improve the level of automation in the production process; by analyzing the relationship between historical data and current state parameters, it is possible to find room for process optimization, and then adjust the process parameters to achieve better production results; dynamic adjustment of state parameters helps to reduce energy waste, for example, by optimizing air and gas flow control during the drying process to reduce energy consumption; historical data analysis can help identify unnecessary process steps or parameter settings, further reducing costs.

[0089] Furthermore, if Figure 7 As shown, the process of obtaining the process effect affected by the mineral material process parameters in step S3 specifically includes the following steps:

[0090] Step S31: input the converted real-time ore preprocessing data into the ore processing numerical model to perform numerical simulation on the flue gas heat exchange process and the heating and operation of minerals and ore powder, and perform control calculation on the gas flow;

[0091] Step S32: Calculate the flue gas heat transfer according to the gas flow; and calculate the movement of the ore and the ore powder according to the gas flow and the heat transfer calculation results; and use the DEM soft ball model to simulate the particle-particle contact force;

[0092] Step S33: For the heating conditions of the ore and the ore powder during the drying and waste heat process, the heat transfer between two particles in contact with each other or between a particle and the wall of the device is calculated to obtain the influence of the process parameters of the ore and the process effect; and adjustments are made based on the influence of the process parameters of the ore;

[0093] The heat transfer between two particles in contact with each other or between a particle and the wall of the device is calculated as follows:

[0094]

[0095] Among them, H c represents the contact thermal conductivity, T i and T j Represent the temperature of the target particle and the contact particle or wall, respectively.

[0096] Preferably, in this embodiment, when drying the ore and preheating the mineral powder, the process effect is comprehensively affected by multiple process parameters such as waste heat flue gas flux and temperature, material particle size, heating bin and stirring paddle speed. The present invention uses CFD and DEM methods to conduct numerical simulation studies on the flue gas heat exchange process and the heating and movement of minerals and mineral powders, respectively, to guide the comprehensive regulation of the above process parameters, so as to achieve the process objectives while reducing energy loss. The specific theory is as follows:

[0097] The CFD method controls the gas flow through the continuity equation and the volume-averaged Navier-Stokes equations:

[0098]

[0099] Among them, ε f represents the liquid volume fraction, ρ f represents fluid density, P gauge pressure, u f represents the fluid velocity, τ represents the viscous stress tensor;

[0100] The energy equation is used to describe flue gas heat transfer:

[0101]

[0102] Among them, T f Indicates temperature, represents the temperature gradient, k f represents the thermal conductivity of flue gas, c p Represents the specific heat capacity of flue gas.

[0103] Use Newton's second law in the DEM method to describe the movement of ore and ore powder:

[0104]

[0105] The subscripts i and j indicate that particles i and j are in contact with each other, and m i is the mass of particle i, I i represents the moment of inertia of particle i, f c,ij represents the contact force between particles i and j, f g,i Represents the gravity of the particle. M t,ij and M r,ij represent the tangential and rolling friction moments acting on particle i by particle j, respectively;

[0106] The contact force between two particles in the soft ball model can be decomposed into the normal and tangential directions as follows:

[0107] f c,ij =f cn,ij +f ct,ij =-k n,ij δ n,ij -γ n,ij δ n,ij -k k,ij δ r,ij -γ r,ij δ r,ij

[0108] Among them, f c,ij represents the particle contact force, f cn,ij represents the normal contact force, f ct,ij represents the tangential contact force; k n,ij and k k,ij represents the normal and tangential stiffness coefficients, γ n,ij and γ r,ij represents the normal and tangential damping coefficients; δ r,ij and δ n,ij represents the normal and tangential overlap of the two particles; δ r,ij and δ n,ij Represents their rate of change over time.

[0109] For the heating of ore and ore powder during drying and preheating, the following expression is used to describe the heat transfer between two particles in contact with each other or between a particle and the wall of the device:

[0110]

[0111] Among them, H c represents the contact thermal conductivity, T i and T j They represent the temperatures of the target particles and the contact particles (or walls) respectively. By building the above model, a reliable numerical simulation can be carried out on the process of drying the ore and preheating the ore powder with waste heat flue gas. Finally, a set of optimal process parameter combinations can be formulated according to the differences in working conditions in actual scenarios.

[0112] Furthermore, if Figure 8 As shown in FIG. 1 , the process of adjusting based on the influence of the ore process parameters specifically includes the following steps:

[0113] Step S331: analyzing the influence of the process parameters on the process effect to obtain the adjustment parameters; calculating the first loss value based on the adjustment parameters and the real adjustment parameters obtained in advance;

[0114] Step S332: Calculate the loss value based on the simulation result of the ore processing model and the real-time real mode adjustment parameter obtained in advance; wherein the real adjustment value includes the real parameter adjustment parameter and the real mode adjustment parameter;

[0115] Step S333: By minimizing the sum of the first loss value and the second loss value, the ore processing model is updated to obtain the optimal process parameter combination.

[0116] Among them, step S331 process effect analysis and loss value calculation: the process effect E is not only related to the process parameter P, but may also be affected by environmental factors θ (such as ambient temperature and humidity) and equipment status φ (such as equipment wear degree and operating time); therefore, the process effect can be expressed as:

[0117] E=f(P,θ,φ)+∈

[0118] In the formula, ∈ represents random noise, which indicates unmodeled error or uncertainty; f represents a multivariable nonlinear function, which describes the relationship between process effect and process parameters, environmental factors and equipment status;

[0119] Adjust parameter calculation, adjust parameter P adj The calculation of needs to consider the feasible domain of process parameters and the constraint g(P)≤0, the optimization problem can be expressed as

[0120]

[0121] In the formula, E target represents the target process effect; g(P) represents the constraints of process parameters, such as equipment power limitation, material handling capacity, etc.;

[0122] The first loss value L1 The calculation not only includes the difference between the adjusted parameters and the true parameters, but also introduces a weight matrix to reflect the importance of different parameters:

[0123] L 1 =(P adj -P real ) T W(P adj -P real )+λ‖P adj ‖ 1

[0124] Where W is the weight matrix, which reflects the contribution of different process parameters to the loss value; λ is the regularization coefficient, which is used to control the sparsity of parameter adjustment; ‖·‖ 1 represents the L1 norm, which is used to promote sparse solutions;

[0125] Step S332 represents model simulation and loss value calculation. The ore processing numerical model is further refined into a multi-scale model, including a macroscopic flow model and a microscopic particle dynamics model. The simulation result E sim It can be expressed as:

[0126] E sim =f macro (P adj ,θ)+f micro (P adj ,φ)+η

[0127] In the formula, f macro represents the macroscopic flow model, describing the gas flow and heat transfer process; f micro represents the microscopic particle dynamics model, describing the heating and movement of the ore and ore powder; η represents the model error, indicating the physical phenomena that are not captured;

[0128] The second loss value L 2 Multi-objective optimization can be introduced to consider both process effect and energy loss E energy express:

[0129]

[0130] In the formula, α and β represent weight coefficients, which are used to balance the importance of process effect and energy loss; Indicates target energy loss;

[0131] Step S333 represents the model update and optimal parameter combination. The loss value minimization problem can be expanded to a multi-objective optimization problem, taking into account the process effect, energy loss and equipment life E life express:

[0132]

[0133] In the formula, γ represents the weight coefficient, which is used to reflect the importance of equipment life; Indicates the target equipment life;

[0134] Model updates can introduce adaptive learning mechanisms based on historical data Dynamically adjust model parameters to indicate:

[0135]

[0136] In the formula, Δf represents the model correction based on historical data and the optimal parameter combination, which can be achieved through machine learning methods (such as neural networks). Through the above algorithms and formulas, the mineral process parameters can be analyzed and adjusted more comprehensively, while considering multi-dimensional influencing factors and optimization goals, thereby achieving comprehensive optimization of process effects, energy loss and equipment life.

[0137] Preferably, in step S331 of this embodiment, the parameters that need to be adjusted are determined by analyzing the influence of the mineral process parameters on the process effect; a first loss value based on the adjustment parameters is calculated, which usually involves the definition and calculation of a loss function; in step S332, the loss value is calculated based on the simulation results of the mineral processing model, combined with the real mode adjustment parameters obtained in real time, including real parameter adjustment and mode adjustment parameters; a second loss value based on the simulation results of the mineral processing model is calculated; in step S333, the mineral processing model is updated by minimizing the sum of the first loss value and the second loss value, so as to obtain the optimal process parameter combination; this embodiment can significantly improve the effect of mineral processing, reduce the process defect rate, and improve product quality through scientific data analysis and model optimization; the optimized process parameters can reduce raw material consumption and energy waste, thereby reducing production costs; reasonable process parameter adjustment can improve the operating efficiency of the production line, shorten the production cycle, and meet market demand; combined with real-time data and model prediction, the process effect can be predicted more accurately and the deviation caused by inaccurate parameters can be reduced; by acquiring data in real time and dynamically adjusting process parameters, the production process can always be in the optimal state to ensure production stability and efficiency.

[0138] Furthermore, if Fig. 9 As shown, the present embodiment also provides an embodiment of a top-blown furnace ore pretreatment and feeding system. In this embodiment, the top-blown furnace ore pretreatment and feeding system is applied to the top-blown furnace ore pretreatment and feeding method in the above embodiment, and the top-blown furnace ore pretreatment and feeding system includes:

[0139] The ore processing module 17 is used to use the low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the dust is collected by the electric field as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder;

[0140] The ore simulation calculation module 18 is used to retrieve historical ore preprocessing data, build a ore processing numerical model based on the historical ore preprocessing data; collect real-time ore preprocessing data of ore entering the drying device and ore powder being added to the preheating device, and convert the real-time ore preprocessing data;

[0141] The parameter adjustment module 19 is used to input the converted real-time ore pretreatment into the ore processing numerical model to perform numerical simulation calculations on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and obtain the influence of the process effect on the ore process parameters; and make adjustments based on the influence of the ore process parameters;

[0142] Among them, the process is affected by the mineral process parameters including waste heat flue gas flux and temperature, material particle size, heating chamber and agitator speed, etc.

[0143] Preferably, in the ore processing module 17 of this embodiment, the flue gas from the furnace continuously enters the waste heat boiler for electric field dust collection, and the low-temperature flue gas is used for heating to improve energy utilization efficiency; when the coarse-grained ore enters the drying device, the low-temperature flue gas provides heat to dry the ore; the dried ore enters the ball mill for powdering; the ore powder is then added to the preheating device and further preheated by the low-temperature flue gas to finally obtain preheated ore powder; this embodiment realizes automated control of the ore processing process through modular design, reduces manual intervention, and improves production efficiency and stability; makes full use of the waste heat of the low-temperature flue gas, reduces energy consumption, and reduces production costs; through multi-stage heat exchange, ensures that the ore is fully dried and preheated at different stages, thereby improving the quality of the final product; the electric field dust collection technology reduces dust emissions in the flue gas, meeting environmental protection requirements. The ore simulation calculation module 18 retrieves historical ore preprocessing data and constructs a numerical model to simulate the ore processing process; collects real-time data of the ore entering the drying device and adding the preheating device, and performs data conversion to ensure the accuracy of the model; based on historical and real-time data, performs numerical simulation calculations on the flue gas heat exchange process, mineral heating and movement, and optimizes process parameters; this embodiment uses numerical simulation to accurately predict process effects, optimize ore processing parameters, and improve production efficiency; uses historical and real-time data to support decision-making, reduce human errors, and improve production management levels; can quickly respond to production changes and adjust process parameters to adapt to different production needs. The parameter adjustment module 19 inputs the converted real-time data into the numerical model of mineral processing, and performs numerical simulation calculations on the flue gas heat exchange process and mineral movement; analyzes the influence of process parameters such as waste heat flue gas flux, temperature, material particle size, heating bin and agitator speed on the process effect; based on the simulation results, dynamically adjusts the process parameters to ensure the stability and efficiency of the production process; through dynamic adjustment, ensures the stability and continuity of the production process and reduces the risk of production interruption; optimizes process parameters, improves production efficiency and reduces energy consumption; and through precise parameter adjustment, ensures the consistency and reliability of the final product quality.

[0144] like Figure 10-12 As shown, this embodiment also provides another embodiment of the top-blown furnace ore pretreatment and feeding system. In this embodiment, the top-blown furnace ore pretreatment and feeding method applied in the above embodiment includes an execution part and a control part;

[0145] The execution part includes the silo 17, drying device 18, ball mill 20, preheating device 21, feeding device and waste heat flue gas path 19; the transportation of coarse-grained ore to the drying device 18 and from the drying device 18 to the ball mill 20 can be carried out by conveyor belt or screw belt transportation. After being crushed into ore powder by the ball mill 20, it can be transported to the preheating device 21 of the ore powder by pneumatic conveying. The preheated ore powder is delivered to the feeding device of the furnace wall by pneumatic conveying to complete the feeding operation. The control part mainly includes: silo discharge control (dropping valve), drying device speed and flue gas flow control (motor and flue gas flow valve), preheating device speed and flue gas flow control (motor and flue gas flow valve) and feeding device feeding control (pneumatic conveying flow valve). The above parts are integrated into the control terminal for unified and visual adjustment.

[0146] The drying device 18 comprises a drying chamber 1 and a heating chamber 2. The drying chamber 1 is an inclined cylinder, and the front and rear ends are connected to the base through bearings so that it can rotate; a feeding port 3 is opened at the higher end of the cylinder, and a plurality of small holes as steam outlets 4 are opened on the feeding port cover and the wall surface of the higher end; a bevel gear ring 5 is fixedly connected to the outside of the cylinder; a discharge port 6 is opened at the lower end, which can cooperate with the cover plate to complete the discharge work; the heating chamber 2 is a cylinder nested in the outer side of the middle and rear part of the drying chamber, and is connected to the drying chamber 2 through a sealing structure and a bearing; a smoke inlet 7 and a smoke outlet 8 are opened at both ends of the heating chamber 2, and are fixed to the base through the support below; a driving motor 9 is connected to the bevel gear ring 5;

[0147] When the equipment is working, the ore is put in from the feeding port 3, and the flue gas from the waste heat boiler is passed from the flue gas inlet 7 into the heating chamber 2 to surround the drying chamber 1 so that the temperature in the drying chamber 1 increases; at the same time, the driving motor 9 is started to drive the bevel gear ring 5 to rotate the drying chamber 1, thereby increasing the heat exchange efficiency between the ore and the wall and the air, so that the moisture therein evaporates quickly and is discharged from the steam outlet 4; after the drying of a batch of materials is completed, the drying chamber 1 stops rotating and the flue gas supply stops at the same time; at this time, the discharge port cover is opened to discharge the material and enter the ball milling process.

[0148] The preheating device 21 comprises two hollow cylinders nested in each other. The inner layer is provided with a spiral ribbon stirring paddle 10 to stir the mineral powder so that the mineral powder is evenly heated. The waste heat boiler flue gas is introduced into the outer layer to provide a heat source for preheating. The mineral powder enters the inner cylinder from the mineral powder inlet 11. After being evenly heated, the discharge valve 12 is opened, and the mineral powder falls out from the discharge port 13 and enters the top-blown furnace through pneumatic conveying.

[0149] Among them, the waste heat boiler flue gas is used as the heat source to preheat the mineral powder obtained after the ball mill is crushed, so that the powder can participate in the reaction more quickly after entering the top-blown furnace.

[0150] The feeding device of the top-blown furnace wall is provided with a group of feeding pipes 16 along the outer wall of the furnace body at a location where the side-blowing lance 14 is located and the drop in height between the top-blown furnace 22 and the molten pool 15 is lower. The ore powder crushed by the ball mill 20 is sprayed into the furnace through pneumatic conveying, so that it falls into the molten pool quickly and evenly to participate in the reaction.

[0151] like Fig.13 As shown, this embodiment provides an embodiment of an electronic device. In this embodiment, the electronic device 80 includes a processor 81 and a memory 82 coupled to the processor 81.

[0152] The memory 82 stores program instructions for implementing the top-blown furnace ore pretreatment and feeding method according to any of the above-mentioned embodiments.

[0153] The processor 81 is used to execute the program instructions stored in the memory 82 to perform ore pretreatment and feeding of the top-blown furnace.

[0154] The processor 81 may also be referred to as a CPU (Central Processing Unit). The processor 81 may be an integrated circuit chip having signal processing capabilities. The processor 81 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0155] Further, Fig.14 This is a schematic diagram of the structure of a storage medium of an embodiment of the present application. The storage medium 90 of the embodiment of the present application stores program instructions 91 that can implement all the above methods, wherein the program instructions 91 can be stored in the above storage medium in the form of a software product, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or terminal devices such as a computer, a server, a mobile phone, and a tablet.

[0156] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0157] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units. The above is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

[0158] The specific implementation methods of the invention are described in detail above, but they are only examples, and the invention is not limited to the specific implementation methods described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the invention, therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the invention should be included in the scope of the invention.

Claims

1. A method for pretreatment and feeding of ore for a top-blown furnace, characterized in that: The top-blown furnace ore pretreatment and feeding method comprises the following steps: The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the electric field collects the dust is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder; Retrieve historical material preprocessing data, and build a material processing numerical model based on the historical material preprocessing data; collect real-time material preprocessing data of the material entering the drying device and the material powder being added to the preheating device, and convert the real-time material preprocessing data; The converted real-time ore pretreatment is input into the ore processing numerical model to carry out numerical simulation calculation on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and the process effect is affected by the ore process parameters; adjustments are made based on the influence of the ore process parameters.

2. The method for pretreatment and feeding of top-blown furnace ore according to claim 1, characterized in that: The process of finally obtaining preheated mineral powder includes the following steps: The low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the electric field collects the dust is used as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heat supply to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; The coarse-grained ore is transported from the drying device to the ball mill by conveyor belt or screw belt. After the ball mill crushes the ore into powder, it is transported to the ore preheating device by pneumatic transmission and preheated by low-temperature flue gas. The preheated ore powder is obtained, and the preheated ore is pneumatically conveyed to the furnace wall feeding device to complete the feeding operation.

3. The top-blown furnace charge pretreatment and feeding method according to claim 2, characterized in that: The process of converting real-time mineral preprocessing data includes the following steps: A material processing model is constructed according to the geometric characteristic parameters of the drying device and the preheating device, and the material processing model is divided into three-dimensional grids; the parameters corresponding to each grid are initialized to obtain the initialized material processing model, and historical material preprocessing data is retrieved; Extracting key process parameters from historical mineral material preprocessing data, and determining initial state parameters according to the key process parameters in the historical mineral material preprocessing data as state parameters corresponding to the start time of the first preset state; Taking the first preset state as the initial condition, the mineral material processing model is used to obtain the state parameters of the mineral material processing at each moment under the initial condition in real time until the drying device is turned off.

4. The top-blown furnace charge pretreatment and feeding method according to claim 3, characterized in that: The process until the drying device is turned on includes the following steps: According to the material processing model, the state parameters of the material processing at each moment under the initial conditions are obtained in real time until the drying device is turned off, and a first state set is obtained; and the state parameter corresponding to the moment when the drying state is turned on is used as the first state parameter; Using the ore processing model to obtain the state parameters of the ore at each moment in the second preset state in real time based on the first state parameters until the preheating device is turned off, thereby obtaining a second state set; The relationship between the mineral materials is analyzed based on the first state set, the second state set and the historical mineral material data, and the relationship between the process effect and the influence of the mineral material process is studied.

5. The method for pretreatment and feeding of ore for a top-blown furnace according to claim 1, characterized in that: The process of obtaining the process effect affected by the mineral process parameters includes the following steps: The converted real-time ore pretreatment data is input into the ore processing numerical model to perform numerical simulation on the flue gas heat exchange process and the heating and operation of minerals and ore powder, and to perform control calculation on the gas flow; The flue gas heat transfer is calculated based on the gas flow; the movement of the ore and the ore powder is calculated based on the gas flow and the heat transfer calculation results; the DEM soft ball model is used to simulate the particle-particle contact force; Regarding the heating conditions of the ore and ore powder during the drying and waste heat processes, the heat transfer between two particles in contact with each other or between a particle and the wall of the device is calculated, and it is concluded that the process effect is affected by the ore process parameters; adjustments are made based on the influence of the ore process parameters.

6. The method for pre-treating and feeding ore for a top-blown furnace according to claim 5, characterized in that: The process of making adjustments based on the impact of mineral process parameters includes the following steps: Analyze the influence of the process parameters on the process effect and obtain the adjustment parameters; calculate the first loss value based on the adjustment parameters and the real adjustment parameters obtained in advance; Calculate the loss value based on the simulation results of the ore processing model and the real-time real mode adjustment parameters obtained in advance; wherein the real adjustment value includes the real parameter adjustment parameter and the real mode adjustment parameter; By minimizing the sum of the first loss value and the second loss value, the ore processing model is updated to obtain the optimal process parameter combination.

7. A top-blown furnace ore pretreatment and feeding system, which is applied to the top-blown furnace ore pretreatment and feeding method according to any one of claims 1 to 6, characterized in that: The top-blown furnace ore pretreatment and feeding system comprises: The ore processing module is used to use the low-temperature waste heat flue gas obtained after the waste heat boiler absorbs the waste heat and the dust is collected by the electric field as the main heat source of the system; when the coarse-grained ore enters the drying device for processing, the low-temperature flue gas is used for heating to obtain dry ore; the dry ore is transmitted to the ball mill to obtain ore powder; the ore powder is added to the ore preheating device, and the low-temperature flue gas is used for heating to finally obtain preheated ore powder; The ore simulation calculation module is used to retrieve historical ore preprocessing data and build a ore processing numerical model based on the historical ore preprocessing data; collect the real-time ore preprocessing data of the ore entering the drying device and the ore powder being added to the preheating device, and convert the real-time ore preprocessing data; The parameter adjustment module is used to input the converted real-time ore pretreatment into the ore processing numerical model to perform numerical simulation calculations on the flue gas heat exchange process and the heating and movement of minerals and ore powder, and obtain the influence of ore process parameters on the process effect; and make adjustments based on the influence of ore process parameters.

8. A top-blown furnace ore pretreatment and feeding device, which is applied to the top-blown furnace ore pretreatment and feeding method as claimed in any one of claims 1 to 6, characterized in that: The top-blown furnace ore pretreatment and feeding device comprises: an execution part and a control part; The execution part includes the silo, drying device, ball mill, preheating device, feeding device and waste heat flue gas path; the coarse-grained ore is transported to the drying device and from the drying device to the ball mill by conveyor belt or screw belt. After being crushed into ore powder by the ball mill, it is transported to the ore powder preheating device by pneumatic conveying; the preheated ore powder is transported to the feeding device on the furnace wall by pneumatic conveying to complete the feeding operation; The control part includes: silo discharge quantity control, drying device speed and flue gas flow control, preheating device speed and flue gas flow control and feeding device feeding control.

9. The top-blown furnace charge pretreatment and feeding device according to claim 8, characterized in that: The drying device includes a drying chamber and a heating chamber. The drying chamber is an inclined cylinder, and the front and rear ends are connected to the base through bearings to enable it to rotate; a feeding port is provided at the higher end of the cylinder, and several small holes are provided on the feeding port cover and the wall of the higher end as steam outlets; a bevel gear ring is fixed to the outside of the cylinder; a discharge port is provided at the lower end, which cooperates with the cover plate to complete the unloading work; the heating chamber is a cylinder nested on the outer side of the rear part of the drying chamber, and is connected to the drying chamber through a sealing structure and bearings; a smoke inlet and a smoke outlet are provided at both ends of the heating chamber, and are fixed to the base through the support below; the driving motor is connected to the bevel gear ring.

10. The top-blown furnace charge pretreatment and feeding device according to claim 8, characterized in that: The preheating device includes two hollow cylinders nested in each other. The inner layer is provided with a spiral belt stirring paddle to stir the mineral powder so that the mineral powder is evenly heated; the waste heat boiler flue gas is introduced into the outer layer to provide a heat source for preheating. The mineral powder enters the inner cylinder from the mineral powder inlet. After being evenly heated, the discharge valve is opened, and the mineral powder falls out from the discharge port and enters the top-blown furnace through pneumatic conveying; The feeding device of the top-blown furnace wall is on the side wall of the top-blown furnace where the side-blowing lance is located and a group of feeding pipes are set along the outer wall of the furnace body below the molten pool. The ore powder crushed by the ball mill is sprayed into the furnace through pneumatic conveying, so that it falls into the molten pool quickly and evenly to participate in the reaction.

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