Process method and processing system for adding lump ore fly ash into pellets

Abstract

The invention relates to the technical field of production processes, in particular to a process method for adding lump ore fly ash into pellets and a processing system.The process method for adding the lump ore fly ash into the pellets mainly comprises the following steps that firstly, the lump ore fly ash is collected; the collected lump ore fly ash is conveyed to a pellet production workshop in a closed conveying mode; the lump ore fly ash is injected into a pellet batching bin in a pneumatic conveying mode, and the lump ore fly ash is evenly added into the mixture according to a preset proportion through quantitative feeding equipment; then synchronously reducing the ratio of the fine powder to the bentonite in the mixture according to the addition amount of the lump ore fly ash to obtain a target mixture; and finally, the target mixture is prepared into finished pellets through a pelletizing procedure and a roasting procedure. According to the method, the ore fly ash is directly applied to pellet production, the pelletizing procedure is directly added, the sintering process is replaced, the energy consumption and the production cost are remarkably reduced, and meanwhile the environmental protection benefit is improved.

Description

Technical Field

[0001] This application relates to the technical field of production processes, and particularly to a process method and processing system for adding lump ore dust removal ash to pellets. Background Art

[0002] In the prior art, lump ore dust removal ash usually needs to be humidified and then transported to the sintering plant, where it is sintered into sinter ore after being mixed with coal and water in the blended material. This process has the following defects: high cost: the fuel and energy costs of the sintering process reach 86 yuan per ton, and the utilization efficiency of lump ore dust removal ash is low; environmental pollution: dust is easily generated during the humidification and transportation processes, polluting the environment; long process: it needs to go through the sintering process, the processing time is extended, and the overall efficiency decreases. In addition, the iron content of lump ore dust removal ash is as high as 58 - 60%, which has some functions of iron concentrate powder and bentonite, but its value has not been fully explored in the prior art. Therefore, there is an urgent need for an efficient, environmentally friendly and low-cost alternative solution. Summary of the Invention

[0003] The embodiments of this application provide a process method and processing system for adding lump ore dust removal ash to pellets, aiming to solve the technical problem of resource waste and environmental pollution caused by humidifying lump ore dust removal ash and then mixing it into the blended material in the sintering plant, and sintering it into sinter ore after coal and water blending in the prior art. The process method and system for adding lump ore dust removal ash to pellets provided by this application directly apply the ore dust removal ash to pellet production, directly add it to the pelletizing process, replace the sintering process, significantly reduce energy consumption and production costs, and at the same time improve environmental protection benefits.

[0004] In a first aspect, the embodiments of this application provide a process method for adding lump ore dust removal ash to pellets, and the method includes:

[0005] Collect lump ore dust removal ash;

[0006] Transport the collected lump ore dust removal ash to the pellet production workshop by means of sealed transportation;

[0007] Inject the lump ore dust removal ash into the pellet batching bin in the pellet production workshop by means of pneumatic conveying;

[0008] Use a quantitative feeding device to evenly add the lump ore dust removal ash in the pellet batching bin to the mixed material according to a preset ratio;

[0009] According to the addition amount of the lump ore dust removal ash, synchronously reduce the ratios of iron concentrate powder and bentonite in the mixed material to obtain a target mixed material;

[0010] Make the target mixed material into finished pellets.

[0011] In a possible implementation manner of the first aspect, the step of collecting lump ore dust removal ash includes:

[0012] Collect the lump ore dust by a closed dust removal system, and store the collected lump ore dust in a dust bin with an anti-caking structure.

[0013] In a possible implementation manner of the first aspect, the step of transporting the collected lump ore dust to the pellet production workshop by a closed transportation method includes:

[0014] Use a negative pressure pneumatic conveying tanker to transport the collected lump ore dust from the dust bin to the pellet production workshop.

[0015] In a possible implementation manner of the first aspect, the step of injecting the lump ore dust into the pellet batching bin of the pellet production workshop by a pneumatic conveying method includes:

[0016] Through a compressed air pipeline externally connected to the negative pressure pneumatic conveying tanker, push the collected lump ore dust through the compressed air pipeline into the pellet batching bin by pushing the air flow.

[0017] In a possible implementation manner of the first aspect, the step of making the target mixture into finished pellets includes:

[0018] Make the target mixture into finished pellets through a pelletizing process and a roasting process.

[0019] In a second aspect, the present application further provides a processing system for adding lump ore dust to pellets. The processing system includes:

[0020] A closed dust removal system for collecting lump ore dust;

[0021] Transportation equipment for transporting the collected lump ore dust to the pellet production workshop by a closed transportation method;

[0022] A conveying device for injecting the lump ore dust into the pellet batching bin of the pellet production workshop by a pneumatic conveying method;

[0023] Quantitative feeding equipment for uniformly adding the lump ore dust in the pellet batching bin to the mixture according to a preset ratio;

[0024] A raw material optimization device for synchronously reducing the ratios of concentrate powder and bentonite in the mixture according to the addition amount of the lump ore dust to obtain a target mixture;

[0025] Processing equipment for making the target mixture into finished pellets.

[0026] In a possible implementation of the first aspect, the closed dust removal system is used to collect lump ore dust and store the collected lump ore dust in a ash bin with an anti-caking structure; wherein, the ash bin is provided with a vibration device and a conical discharge port.

[0027] In a possible implementation of the first aspect, the transportation device is a negative pressure pneumatic conveying tanker; the negative pressure pneumatic conveying tanker has a negative pressure pneumatic conveying system with a sealing function and an anti-blocking function, which is used to generate a vacuum negative pressure and suck the collected lump ore dust into the pipeline;

[0028] Wherein, the interface of the negative pressure pneumatic conveying tanker is provided with a quick docking flange, and the exhaust port of the negative pressure pneumatic conveying tanker is provided with a first dust removal device.

[0029] In a possible implementation of the first aspect, the transportation device is externally connected to the conveying device, and the conveying device has a compressed air pipeline;

[0030] The conveying device is used to push the lump ore dust through the air flow, so that the lump ore dust enters the pellet batching bin through the compressed air pipeline.

[0031] In a possible implementation of the first aspect, the quantitative feeding device includes a star-shaped discharge valve and a belt scale.

[0032] The beneficial effects of the present invention are as follows: First, collect the lump ore dust; transport the collected lump ore dust to the pellet production workshop by means of closed transportation; then inject the lump ore dust into the pellet batching bin by means of pneumatic conveying, and use the quantitative feeding device to evenly add the lump ore dust to the mixture according to a preset ratio; then, according to the addition amount of the lump ore dust, synchronously reduce the ratio of concentrate powder and bentonite in the mixture to obtain the target mixture; finally, make the target mixture into finished pellets through the pelletizing process and the roasting process; this application directly applies the ore dust to pellet production, directly adds it to the pelletizing process, replaces the sintering process, significantly reduces energy consumption and production costs, and improves environmental protection benefits at the same time. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a main process flow diagram of the process method for adding lump ore dust to pellets provided by the present application;

[0035] Figure 2 It is a schematic structural diagram of a processing system for adding lump ore dust removal ash to pellets provided by an embodiment of the present application. Specific embodiments

[0036] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0037] It should be understood that when used in the specification of the present application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0038] It should also be understood that the term "and / or" used in the specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0039] As used in the specification of the present application and the appended claims, the term "if" can be interpreted as "when", "once", "in response to determining", or "in response to detecting" depending on the context. Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once determined", "in response to determining", "once [the described condition or event] is detected", or "in response to detecting [the described condition or event]" depending on the context.

[0040] In addition, in the description of the specification of the present application and the appended claims, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] References to "one embodiment" or "some embodiments" etc. described in the specification of the present application mean that specific features, structures or characteristics described in connection with that embodiment are included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all of the embodiments", unless otherwise specifically emphasized in another way. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way.

[0042] It is understandable that the inventors of the present application have found that lump ore dust removal ash is the dust removal ash from the lump ore drying process. The general process flow is to mix the lump ore dust removal ash into the blending material of the sintering plant, and after coal and water blending, sinter it into sinter ore. During the process, because there are many processes, it first reaches the blending bin, and then goes through blending stockpiling, reclaiming by a reclaiming machine, and sintering by a sintering machine. Due to its fine particle size, it is extremely easy to generate dust; at the same time, the process processing time is prolonged and the cost increases. The iron content of the lump ore dust removal ash is more than 58%. After being sintered, it will consume the fuel and energy costs of the sintering process and become sinter ore. From the lump ore dust removal ash to sintering, through this process route, the fuel and energy cost of 86 yuan / t is relatively high. The indexes of the lump ore dust removal ash are as follows:

[0043]

[0044]

[0045] It can be seen from the table that the lump ore dust removal ash contains a large amount of beneficial components. How to give full play to the role of industrial waste while reducing the adverse effects on the sintering process and environmental protection has always been an urgent problem for iron and steel enterprises to solve.

[0046] Therefore, a process route is needed to make full use of its advantages of high grade and fine particle size to create benefits for iron and steel enterprises under the conditions of less investment or no investment and the lowest operating cost.

[0047] Based on the above considerations, the embodiments of the present application provide a process method and system for adding lump ore dust removal ash to pellets. Hereinafter, the present application will elaborate on the technical content to be protected by the present application through specific embodiments:

[0048] First, in a first aspect, the process method for adding lump ore dust removal ash to pellets in the embodiments of the present application mainly includes the following steps:

[0049] Step 10, collecting lump ore dust removal ash:

[0050] Specifically, the lump ore dust is collected through a closed dust removal system, and the collected lump ore dust is stored in a ash bunker with an anti-caking structure; wherein, the ash bunker is provided with a vibration device and a conical discharge opening;

[0051] In the embodiment of the present application, the lump ore dust can be collected by bag dust removal and sent to the ash bunker.

[0052] The ash bunker is provided with a vibration device and a conical discharge opening. For example, the cone angle of the dust hopper of the conical discharge opening is ≥60°;

[0053] The ash bunker is provided with a vibration device. For example, a vibration motor or an air cannon is installed in the hopper to prevent the ash from caking (the lump ore ash is prone to caking). The outlet of the hopper uses a double-layer soft-sealed flange, which can make the negative pressure pneumatic conveying tanker be reasonably utilized, and the volume of the ash bunker should meet the amount of ash for two tankers.

[0054] In specific implementation, the generation amount of the lump ore drying dust removal depends on the production situation. Generally, the dust hopper can hold the lump ore dust for two tankers.

[0055] Step 20, transport the collected lump ore dust to the pellet production workshop through a closed transportation method to achieve closed transportation:

[0056] Specifically, a negative pressure pneumatic conveying tanker is used to transport the collected lump ore dust from the ash bunker to the pellet production workshop. Among them, the negative pressure pneumatic conveying tanker has a negative pressure pneumatic conveying system with a sealing function and an anti-blocking function, which is used to generate a vacuum negative pressure and suck the collected lump ore dust into the pipeline;

[0057] In addition, the interface of the negative pressure pneumatic conveying tanker is provided with a quick docking flange, and the exhaust port of the negative pressure pneumatic conveying tanker is provided with a first dust removal device to ensure that there is no dust during transportation;

[0058] In this embodiment, a suction and discharge tanker for loading ash can be used as the negative pressure pneumatic conveying tanker. The suction and discharge tanker can use an electric vehicle to reduce the transportation cost. The suction and discharge tanker adopts a closed, efficient and anti-blocking negative pressure pneumatic conveying system to generate a vacuum negative pressure and suck the ash into the pipeline. The interface of the suction and discharge tanker uses a quick docking flange + sealing ring, with a self-locking anti-dropping design. The exhaust port of the suction and discharge tanker is connected to a small bag dust collector (the first dust removal device) to avoid secondary dust generation. The capacity of the tanker is recommended to be 30 - 50 tons per vehicle.

[0059] In specific implementation, when using a suction and discharge tanker to load ash, the ash loading takes about 1 hour. Two tankers are pulled to the pellet production workshop in one shift, 35 - 48 tons per vehicle, taking 40 tons per vehicle, and 40 tons per vehicle * 2 vehicles = 80 tons are pulled in one shift.

[0060] Step 30, inject the lump ore dust into the pellet batching bin in the pellet production workshop through a pneumatic conveying method:

[0061] Specifically, in this embodiment, the collected lump ore dust can be pushed through the compressed air pipeline externally connected to the negative pressure pneumatic conveying tank truck by means of promoting the air flow, and flow into the pellet batching bin through the compressed air pipeline.

[0062] Among them, the negative pressure pneumatic conveying tank truck is externally connected with a compressed air pipeline, so that the lump ore dust enters the pellet batching bin through the compressed air pipeline under the promotion of the air flow.

[0063] In some embodiments, a second dust removal device is provided at the top of the pellet batching bin, and the pellet batching bin is also provided with a vibration device and a conical discharge port.

[0064] In specific implementation, after the suction and discharge tank truck is filled with one truckload, it is pulled to the pellet workshop and pneumatically conveyed into the pellet batching bin. The external compressed air pipeline is connected to the suction and discharge tank truck, and the dust is pushed by the air flow through the pipeline into the pellet batching bin. A bag filter (second dust removal device) is provided at the top of the pellet batching bin to prevent dust from overflowing. This operation has good sealing performance and no dust. The bottom of the pellet batching bin is designed as a cone, the bottom angle is > 60°, and an air cannon or a vibration motor is installed.

[0065] Step 40, using a metering and feeding device to uniformly add the lump ore dust in the pellet batching bin to the mixture according to a preset ratio:

[0066] Specifically, a metering and feeding device is configured at the outlet of the pellet batching bin. The metering and feeding device can adopt a star-shaped discharge valve and a belt scale, which can ensure that the lump ore dust is uniformly added to the mixture according to a ratio, and the ratio is based on the production amount of the digested lump ore dust. For example, the preset ratio is: the ratio of the lump ore dust is 0.8% - 2%.

[0067] Step 50, raw material optimization: According to the added amount of the lump ore dust, synchronously reduce the ratios of iron concentrate powder and bentonite in the mixture to obtain a target mixture:

[0068] Since the lump ore dust is used to replace the iron concentrate powder in the mixture, in the embodiment of the present application, the ratios of other iron concentrate powders can be correspondingly reduced, and the amount of bentonite used can be appropriately reduced by 0.03%, saving costs. Among them, the amount of bentonite used is reduced by 0.03% - 0.05%.

[0069] Step 60, making the target mixture into finished pellets.

[0070] In specific implementation, in this embodiment, the target mixture can be made into finished pellets through a pelletizing process and a roasting process. The iron grade of the pellets is ≥ 62.5%, the compressive strength is ≥ 2400 N, and the proportion of particles with a particle size < 5 mm is ≤ 0.5%.

[0071] Through the process method of adding lump ore dust removal ash to pellets in the embodiments of the present application, the lump ore dust removal ash is added to the pellet batching bin, and precise batching is carried out through quantitative feeding equipment, avoiding the dust generation in multiple processes such as blending materials and sintering, reducing resource waste, and reducing the energy cost of the long sintering process.

[0072] It can be understood that a process method of adding lump ore dust removal ash to pellets proposed by the present invention belongs to a new process of directly adding lump ore dust removal ash to pellet production, replacing the traditional sintering process. The process method of this embodiment emphasizes transporting the lump ore dust removal ash to the pellet production link by tanker truck, and using its characteristics of high iron content and fine particle size to reduce the consumption of iron concentrate powder and bentonite, reduce the energy cost and environmental pollution of the process, avoid various adverse factors of the lump ore dust removal ash entering the blending materials and then going to sintering, and reduce the environmental protection pressure. The key innovation point is to bypass the sintering process and directly use it for pellet production, and combine an environmentally friendly transportation method. The specific beneficial effects of the process method of adding lump ore dust removal ash to pellets in the embodiments of the present application can include:

[0073] (1) Fully understand the advantages of lump ore dust removal ash

[0074] The lump ore dust removal ash has a high grade and fine particle size. Especially, the -200 mesh reaches 90%, which coincides with the requirements of pellets for raw materials. Its adhesiveness is also helpful for pellet balling. It would be a pity not to use it in pellets. The grade of the lump ore dust removal ash is 58.188%, close to that of iron concentrate powder; the -200 mesh is 90.7%, close to that of Chilean iron concentrate powder and better than that of Kulan iron concentrate powder.

[0075] The following are the indexes of iron concentrate powder and bentonite:

[0076] TFe A1203 SiO₂ P S FeO% -200 mesh % Chilean concentrate 65.89 1.46 4.81 0.019 0.118 27.9 98.1 Kulan concentrate 65.18 0.62 6.30 0.014 0.008 1.150 28.100

[0077] SiO₂% CaO% MgO% K₂O% Na₂O% Al₂O₃% Bentonite 54.1 3.2 2.4 1.4 1.7 17.8 Blue adsorption capacity g / 100g Swelling capacity ml / g Colloid value ml / g Moisture % Loss on ignition % -200 mesh % Bentonite 25.0 37.4 485.3 11.5 15.2 99.5

[0078] (2) The benefits of using lump ore dust removal ash in pellets: If the process flow is changed and the lump ore dust removal ash is transported to the pellets by a suction and discharge tanker truck for addition, compared with the fuel and energy cost of 86 yuan / t in the sintering process, the energy cost of pellets is 37 yuan / t, which is reduced by 49 yuan / t. While reducing the cost, it can increase the balling ability, reduce the consumption of bentonite, and replace the consumption of iron concentrate powder. Calculated based on 2100t of lump ore ash per month, the annual savings is 2100 * 12 * 49 = 1.2348 million yuan. The present invention does not require investment, utilizes the original dust removal ash bin, the suction and discharge tanker trucks of the fleet, and the original compressed air pipeline.

[0079] In the second aspect, the embodiments of the present invention provide a processing system for adding lump ore dust removal ash to pellets, and the system includes:

[0080] A closed dust removal system 10 for collecting lump ore dust removal ash;

[0081] A transportation device 20 for transporting the collected lump ore dust by means of airtight transportation to the pellet production workshop;

[0082] A conveying device 30 for injecting the lump ore dust into the pellet batching bin of the pellet production workshop by means of pneumatic conveying;

[0083] A quantitative feeding device 40 for uniformly adding the lump ore dust in the pellet batching bin to the mixture according to a preset ratio;

[0084] A raw material optimization device 50 for synchronously reducing the ratios of concentrate powder and bentonite in the mixture according to the addition amount of the lump ore dust to obtain a target mixture;

[0085] A processing device 60 for making the target mixture into finished pellets.

[0086] In some embodiments, the airtight dust removal system 10 is mainly used to collect the lump ore dust and store the collected lump ore dust in a dust bin with an anti-caking structure; wherein, the dust bin is provided with a vibration device and a conical discharge port.

[0087] The transportation device 20 uses a negative pressure pneumatic conveying tank truck; the negative pressure pneumatic conveying tank truck has a negative pressure pneumatic conveying system with a sealing function and an anti-blocking function for generating a vacuum negative pressure and sucking the collected lump ore dust into the pipeline;

[0088] Wherein, the interface of the negative pressure pneumatic conveying tank truck is provided with a quick docking flange, and the exhaust port of the negative pressure pneumatic conveying tank truck is provided with a first dust removal device to ensure no dust during transportation.

[0089] The transportation device 20 is externally connected to the conveying device 30, and the conveying device 30 has a compressed air pipeline;

[0090] The conveying device 30 can push the lump ore dust through the air flow, so that the lump ore dust enters the pellet batching bin through the compressed air pipeline; a second dust removal device can be arranged at the top of the pellet batching bin; this operation has good sealing performance and no dust;

[0091] The quantitative feeding device 40 includes a star-shaped discharge valve and a belt scale, which can further ensure that the lump ore dust is uniformly added to the mixture according to the ratio.

[0092] In some other embodiments, the raw material optimization device 50 of the present application can dynamically adjust the ratios of concentrate powder and bentonite in the mixture according to the addition amount of the lump ore dust;

[0093] In a specific implementation, the raw material optimization device 50 is configured with sensors and a raw material optimization algorithm control program. Specifically, the sensors configured in the raw material optimization device 50 may include a flow meter and a weighing sensor, and the addition amount of lump ore dust is monitored in real time through the flow meter and the weighing sensor. The raw material optimization device 50 runs the raw material optimization algorithm control program, and automatically calculates the reduction ratios of concentrate powder and bentonite based on a preset ratio model (such as linear regression or fuzzy logic). For example, if the addition amount of lump ore dust increases by 1%, the concentrate powder is reduced by 0.5% and the bentonite is reduced by 0.03%; the supply rates of the concentrate powder and the bentonite are adjusted through a variable frequency feeder or a pneumatic valve.

[0094] In addition, the raw material optimization device 50 may also have a human-machine interface and an integrated control logic system; the integrated control logic system receives sensor signals and outputs control instructions; the human-machine interface can display real-time ratio data and allows manual calibration or emergency intervention. For example, when the flow sensor of the lump ore dust detects that the addition amount is 2%, the system automatically reduces the supply amount of the concentrate powder by 1% and the supply amount of the bentonite by 0.03%, and ensures the ratio accuracy through closed-loop feedback.

[0095] In some other embodiments, the processing device 60 of the present application can make the optimized mixture into finished pellets to ensure the pellet quality (such as the compressive strength ≥ 2400N and the particle size meets the standard);

[0096] For example, the processing device 60 of the present application can include an intelligent pelletizer, an automated roasting system, and a quality monitoring module;

[0097] Among them, the intelligent pelletizer: optimizes the green pellet forming rate by adjusting the disk rotation speed, inclination angle, and water spraying amount. Specifically, it can be equipped with a servo motor and an automatic water spraying system, and adjusts the pelletizing parameters according to the humidity of the mixture.

[0098] The automated roasting system: uses temperature sensors and infrared thermal imagers to monitor the temperature distribution of the grate-kiln in real time, and automatically adjusts the gas flow rate and air volume. Specifically, a PID controller can be used to adjust the burner to ensure that the roasting temperature is stable in the target range (such as 1250 ± 20 °C).

[0099] The quality monitoring module: integrates an online particle size analyzer and a pressure tester, and real-time feedbacks the pellet quality data to dynamically adjust the process parameters. Specifically, the surface defects of the pellets can be detected through machine vision, and the compressive strength can be predicted by an AI model.

[0100] The beneficial effects of adding lump ore dust removal ash in the embodiment of the present application to the pellet processing system are as follows: The closed dust removal system collects the lump ore dust removal ash; the transportation equipment transports the collected lump ore dust removal ash to the pellet production workshop in a closed transportation manner, and accurately apportions the materials through the quantitative feeding equipment, avoiding the dust generation in multiple processes such as blending materials and sintering, reducing resource waste, and reducing the energy cost of the long sintering process.

[0101] It should be noted that for the information interaction, execution process, etc. between the above-mentioned devices / modules, due to the same concept as the method embodiment of the present application, the specific functions and the technical effects brought thereby can be specifically referred to the method embodiment part, and will not be elaborated here.

[0102] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above-mentioned division of each functional unit and module is used for illustration. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated here.

[0103] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not elaborated or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0104] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in the form of hardware or software depends on the specific application and design constraints of the technical solution. Professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0105] The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A process method for adding lump ore dust removal ash to pellets, characterized in that, The method includes: Collecting lump ore dust removal ash; Transporting the collected lump ore dust removal ash to the pellet production workshop by means of closed transportation; Injecting the lump ore dust removal ash into the pellet batching bin in the pellet production workshop by means of pneumatic conveying; Using a quantitative feeding device to evenly add the lump ore dust removal ash in the pellet batching bin to the mixture according to a preset ratio; According to the addition amount of the lump ore dust removal ash, synchronously reducing the ratios of concentrate powder and bentonite in the mixture to obtain a target mixture; Making the target mixture into finished pellets.

2. The process method according to claim 1, characterized in that, The step of collecting the lump ore dust removal ash includes: Collecting the lump ore dust removal ash through a closed dust removal system and storing the collected lump ore dust removal ash in an ash bin with an anti-caking structure.

3. The process method according to claim 1, wherein The step of transporting the collected lump ore dust removal ash to the pellet production workshop by means of closed transportation includes: Using a negative pressure pneumatic conveying tanker to transport the collected lump ore dust removal ash from the ash bin to the pellet production workshop.

4. The process method according to claim 3, wherein, The step of injecting the lump ore dust removal ash into the pellet batching bin in the pellet production workshop by means of pneumatic conveying includes: Through a compressed air pipeline externally connected to the negative pressure pneumatic conveying tanker, pushing the collected lump ore dust removal ash through the compressed air pipeline into the pellet batching bin by pushing the air flow.

5. The process method according to claim 1, wherein Making the target mixture into finished pellets includes: Making the target mixture into finished pellets through a pelletizing process and a roasting process.

6. A processing system for adding lump ore dust removal ash to pellets, characterized in that, The processing system includes: A closed dust removal system for collecting lump ore dust removal ash; Transportation equipment for transporting the collected lump ore dust removal ash to the pellet production workshop by means of closed transportation; A conveying device for injecting the lump ore dust removal ash into the pellet batching bin in the pellet production workshop by means of pneumatic conveying; A quantitative feeding device for evenly adding the lump ore dust removal ash in the pellet batching bin to the mixture according to a preset ratio; A raw material optimization device for synchronously reducing the ratios of concentrate powder and bentonite in the mixture according to the addition amount of the lump ore dust removal ash to obtain a target mixture; A processing device for making the target mixture into finished pellets.

7. The processing system according to claim 6, wherein, The closed dust removal system is used to collect the lump ore dust removal ash and store the collected lump ore dust removal ash in an ash bin with an anti-caking structure; wherein, the ash bin is provided with a vibration device and a conical discharge port.

8. The processing system according to claim 6, characterized in that, The transportation equipment is a negative pressure pneumatic conveying tanker; the negative pressure pneumatic conveying tanker has a negative pressure pneumatic conveying system with a sealing function and an anti-blocking function for generating a vacuum negative pressure and sucking the collected lump ore dust removal ash into the pipeline; Wherein, the interface of the negative pressure pneumatic conveying tanker is provided with a quick docking flange, and the exhaust port of the negative pressure pneumatic conveying tanker is provided with a first dust removal device.

9. The processing system according to claim 6, characterized in that, The transportation equipment is externally connected to the conveying device, and the conveying device has a compressed air pipeline; The conveying device is used to push the lump ore dust removal ash through the air flow so that the lump ore dust removal ash enters the pellet batching bin through the compressed air pipeline.

10. The processing system according to claim 6, wherein The quantitative feeding device includes a star-shaped discharge valve and a belt scale.

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