Sintering production raw material quality tracking method based on accumulative measurement

Abstract

The invention relates to the technical field of blast furnace production, and discloses a sintering production raw material quality tracking method based on accumulative metering, which comprises the following steps of: according to the principle of'first-in first-out 'in the raw material use process, taking a raw material accumulative metering unit as a marker; the raw materials for sintering production can be positioned in the sinter production process after entering an iron and steel enterprise to be unloaded, so that a sintering production manager can accurately adjust production process parameters according to real-time physical and chemical properties of various raw material varieties, and the sintering production adjustment process can be accurately adjusted according to the quality of the raw materials; the quality stability of the sinter is improved, the product quality of the process product sinter of blast furnace long-process smelting can be improved, the quality control of the process product sinter is facilitated, the sinter quality control and adjustment are well documented, and parameters in the sintering production process are accurately adjusted according to the sinter quality requirements; blast furnace smelting is prevented from being affected by sintered ore quality fluctuation, the blast furnace smoothness is improved, and the molten iron cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blast furnace production, in particular to a sinter production raw material quality tracking method based on cumulative measurement. BACKGROUND

[0002] In the steel enterprise iron front process product (sinter) processing process, the raw materials entering the sintering process are tested, and within the technical requirements, they can be allowed to enter the sintering process as raw materials to produce sinter. The raw materials for sintering process are various, mainly divided into iron materials, fluxes and fuels. Each kind of raw material has multiple suppliers, and the origins and qualities of the raw materials supplied by each supplier are not the same. Even the products of the same supplier will change in quality due to changes in ore veins and changes in processing and production processes, and the change in the quality of the raw materials will inevitably lead to fluctuations in the quality of the sinter.

[0003] In the sinter production process, real-time understanding of the physical and chemical properties of all raw materials in the batching process of the sintering process can achieve adjustment of the sintering process according to the real-time physical and chemical properties of the raw materials, meeting the higher requirements of stable sinter production quality.

[0004] However, the existing raw materials for sinter production are difficult to locate after being unloaded into the steel enterprise due to the subsequent transfer and storage processes. The previous sinter production process was adjusted according to the average physical and chemical properties of the raw materials at a certain stage, which had a certain gap with the actual quality of the raw materials, and could not be accurately adjusted. The stable range of sinter quality was wide, and it could not meet the needs of lower fuel consumption, higher smoothness and lower cost of blast furnaces. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a sinter production raw material quality tracking method based on cumulative measurement. The raw materials are used according to the "first in, first out" principle, and the cumulative measurement unit of the raw materials is used as a marker. The raw materials for sinter production can be located from the unloading into the steel enterprise to the sinter production process, so that the sinter production manager can accurately adjust the production process parameters according to the real-time physical and chemical properties of each raw material variety.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a sinter production raw material quality tracking method based on cumulative measurement, comprising the following steps: S1, the raw material is measured as zero before initial unloading, and the measurement value is accumulated after unloading and use, and the raw material after unloading is used according to the unloading sequence; S2, using the cumulative measurement value as the marker of the raw material variety, and the marker corresponds to the test batch number and the test results represented by the test batch number; S3, in the process of raw material transfer, the variety classification and positioning of the raw material is carried out according to the stop position of the transfer system and the last transfer equipment, and the accumulated tonnage section of the raw material of the corresponding variety unloaded into the corresponding stock bin since entering into use is recorded; S4, in the production process of the sintering procedure, the accumulated measurement value of the raw material variety in use is obtained according to the feedback of the raw material measurement scale, the test batch number corresponding to the measurement value and the test result corresponding to the test batch number are obtained, and the feedback is carried out to the sintering production process control system; S5, the raw material quality influence analysis is carried out on the accumulated production data, and the sintering production process control parameter and the raw material quality requirement are optimized.

[0007] Optionally, in step S2, when the new raw material is unloaded, the accumulated measurement value corresponding to the raw material is the continuation of the accumulated measurement value of the raw material of the same variety before, and the accumulated measurement value corresponds to a unique test batch number.

[0008] Optionally, it further includes a raw material unloading and transfer platform system for controlling and managing the raw material unloading and use process.

[0009] Optionally, the raw material unloading and transfer platform system includes: a measurement module for carrying out accumulated calculation on the measurement value in the raw material unloading and use process, and generating a raw material accumulated measurement unit; a storage module for storing the test batch number, test result and corresponding accumulated measurement unit of the raw material; a positioning module for carrying out variety classification and positioning of the raw material according to the start and stop state of the transfer system and the stop position of the last transfer equipment, and recording the accumulated tonnage section; a data interaction module for carrying out data interaction with the raw material measurement scale and the sintering production process control system, and feeding back the test batch number and test result corresponding to the accumulated measurement value to the sintering production process control system.

[0010] Optionally, the measurement module can carry out measurement and accumulation on different varieties of raw materials respectively, and the initial measurement value of each raw material is zero.

[0011] Optionally, the positioning module can track the position information of the transfer equipment in real time during the raw material transfer process, and store the position information in association with the variety of the raw material and the accumulated tonnage section.

[0012] Optionally, the transfer equipment includes a stock car, when the unloading system is started, the stock car stops at a specific stock bin, the system determines that the raw material is the corresponding variety, and records the accumulated tonnage section of the raw material of the variety unloaded into the stock bin.

[0013] Optionally, in step S5, by obtaining the cumulative metering value of the raw material, the corresponding test results and the sintering production data, the accumulated production data is analyzed for the influence of the raw material quality, and the optimization of the sintering production process control parameters and the raw material quality requirements are realized.

[0014] Compared with the prior art, the present application has the following advantages: (1) In the present application, the raw material is accurately positioned in the sintering production process by taking the cumulative metering unit of the raw material as a marker, and the sintering production adjustment process can be accurately adjusted according to the quality of the raw material, so that the stability of the sinter quality is improved, which is beneficial to the stable and smooth operation of the blast furnace and reduces the smelting cost. (2) The tracking method proposed in the present application can improve the product quality of the sinter in the long process of the blast furnace, which is beneficial to the quality control of the process product sinter, and the sinter quality control adjustment has a basis, and the parameters in the sintering production process are accurately adjusted according to the sinter quality requirements, so as to avoid the influence of sinter quality fluctuation on the blast furnace smelting, improve the smoothness of the blast furnace, and reduce the cost of molten iron. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a flowchart of the sintering production raw material quality tracking method in the embodiment of the present application; Figure 2 is a structural schematic diagram of the raw material receiving, unloading and transfer platform system in the embodiment of the present application; DETAILED DESCRIPTION

[0016] The present application will be further described in detail in conjunction with the drawings and embodiments, and these drawings are all simplified schematic diagrams, which only schematically show the basic structure of the present application, and therefore only show the structures related to the present application.

[0017] In embodiment one, the cumulative metering unit of the raw material is taken as a marker, and the raw material in the sintering production process is positioned from entering the steel enterprise to the sinter production process according to the principle of "first in first out", and the production organization adjustment is carried out according to the actual physical and chemical properties of the raw material, so as to ensure that the sintering production adjustment process can be accurately adjusted according to the quality of the raw material.

[0018] As shown in Figure 1 A sintering production raw material quality tracking method based on cumulative metering, the specific scheme is as follows: taking the cumulative metering unit of the raw material after receiving and unloading as a marker, and making the marker correspond to the test batch number and the test results represented by the test batch number; positioning the raw material variety classification; according to the cumulative metering value of the raw material variety in the batching process, obtaining the test batch number corresponding to the metering value and the test results corresponding to the test batch number, and feeding back to the sintering production process control system; and then analyzing the influence of the raw material quality according to the accumulated production data, optimizing the sintering production process control parameters and the raw material quality requirements.

[0019] The above-mentioned raw materials after unloading follow the principle of "first in, first out" and are used according to the unloading order; all raw material varieties are measured as zero before initial unloading in different transfer equipment; the measurement value is accumulated after starting to unload and use; the accumulated measurement value is used as a marker of the raw material variety, and the marker corresponds to the test batch number and the test result represented by the test batch number.

[0020] Specifically, the raw material is measured as zero before initial unloading, and the measurement value is accumulated after unloading and use; the raw material after unloading is used according to the unloading order; the accumulated measurement value is used as a marker of the raw material variety, and the marker corresponds to the test batch number and the test result represented by the test batch number; when new raw material is unloaded, the accumulated measurement value corresponding to the raw material is a continuation of the accumulated measurement value of the same variety of raw material before, and corresponds to a unique test batch number.

[0021] For example: 35,000 tons of limestone powder are unloaded in total, and 3,000 tons of limestone powder are being unloaded from a ship, and the test batch number corresponding to the ship is XXXXXX; therefore, the test batch number of limestone powder from 35,001 tons to 38,000 tons is XXXXXX, and the test batch number corresponding to the accumulated measurement value of 35,001 tons to 38,000 tons of limestone powder unloaded by the subsequent transfer equipment is XXXXXX, that is, the corresponding test batch numbers are the same.

[0022] During the transfer of raw materials, the variety classification is performed according to the system (transfer system) that is started and stopped and the position where the last transfer equipment is stopped, and the accumulated tonnage segment of the variety of raw material unloaded into the corresponding storage bin since entering into use is recorded.

[0023] Taking fuel in raw materials as an example: after starting the fuel unloading system, the unloading car stops at No. 9 storage bin, the system determines that the raw material is fuel, and records the accumulated tonnage segment of the variety of fuel unloaded into No. 9 storage bin since entering into use in the steel enterprise.

[0024] During the production process of the sintering process, according to the accumulated measurement value of the raw material variety being used fed back by the batching scale of the batching process, the test batch number corresponding to the measurement value and the test result corresponding to the test batch number are found, and are fed back to the sintering production process control system; the sintering production manager accurately adjusts the production process parameters according to the real-time physical and chemical properties of each raw material variety, so as to meet the best technical quality requirements of the sinter.

[0025] In the production process control system, the accumulated production data is analyzed for the influence of raw material quality, and the sintering production process control parameters and raw material quality requirements are optimized. By obtaining the accumulated measurement value of the raw material, the corresponding test result and the sintering production data, the accumulated production data is analyzed for the influence of raw material quality, and the sintering production process control parameters and raw material quality requirements are optimized.

[0026] In summary, the present application can solve the problem of multiple sources of solid raw materials in the sinter production process, the objective quality difference of raw materials, and the quality positioning and tracing of raw materials affecting the quality of sinter. The sintering process can be adjusted in time and accurately according to the quality of the raw materials.

[0027] In order to facilitate the control and management of the use process of the raw materials, the present application further proposes to establish a raw material unloading and transfer platform system.

[0028] As shown in Figure 2 The raw material unloading and transfer platform system includes a metering module, a storage module, a positioning module, and a data interaction module. The storage module is used to store the test batch number, test results, and corresponding cumulative metering units of the raw materials.

[0029] The metering module is used to accumulate the metering value during the use process of the raw materials, and generate the cumulative metering units of the raw materials. The metering module can accumulate the metering value of different types of raw materials respectively, and the initial metering value of each type of raw material is zero.

[0030] The positioning module is used to classify and position the raw materials according to the start and stop states of the transfer system and the position of the last transfer device, and record the cumulative tonnage section. The positioning module can track the position information of the transfer device in real time during the transfer process of the raw materials, and store the position information associated with the type of raw materials and the cumulative tonnage section.

[0031] The data interaction module is used to interact with the batching metering scale and the sintering production process control system, and feed back the test batch number and test results corresponding to the cumulative metering value to the sintering production process control system.

[0032] Since the existing technologies such as the metering module, the storage module, the positioning module, and the data interaction module are relatively mature, their specific structures will not be described in detail here.

[0033] The transfer system in the present application is an automatic control system for controlling and managing the raw materials from unloading to transfer to each link of the sintering process. Its core function is to realize the orderly flow of raw materials according to the "first-in first-out" principle by controlling the start and stop of the transfer equipment, and to provide key operation basis for raw material positioning.

[0034] The system usually includes hardware and software: the hardware involves driving and sensing devices of belt conveyors, unloading cars, transfer chutes, and storage chutes, etc., which are used to perform physical transfer operations of raw materials; the software receives raw material unloading plans, cumulative metering data, etc. through a logic control module, and automatically or semi-automatically controls the start and stop timing of the transfer equipment to ensure that the previous batch of raw materials is used first, and then the next batch of transfer process is started.

[0035] At the same time, the transfer system can record the start-stop state of the equipment in each transfer operation in real time (such as which group of belts is started, the unloading car is parked in which number of ore storage bin, etc.), and associate these information with the cumulative metering value of the raw material, the test batch number, to provide accurate process data support for subsequent raw material positioning and quality traceability.

[0036] For example, when a batch of limestone powder (test batch number XXXXXX) is unloaded, the start-stop transfer system will start the transfer equipment of the corresponding ore storage bin according to the "first-in first-out" principle when the sintering batching needs to use limestone powder. When the cumulative metering value range of this batch of limestone powder is used up, the current transfer equipment is automatically stopped, and the transfer equipment of the next batch of ore storage bin is started, thereby realizing the orderliness and traceability of the raw material flow.

[0037] The above-mentioned transfer equipment includes an unloading car. When the unloading system is started and the unloading car is stopped at a specific ore storage bin, the system determines that the raw material is the corresponding variety, and records the cumulative tonnage section of the variety of raw material unloaded into the ore storage bin.

[0038] Among them, the raw material unloading and transfer platform system is the core carrier to realize raw material positioning, traceability and "first-in first-out" flow, and its functions cover the whole process from raw material unloading, transfer to sintering use, including: establishing a raw material cumulative metering system (taking cumulative tonnage as a marker); associating metering value with test batch number and quality data; controlling the start-stop logic of the transfer equipment to ensure the execution of the "first-in first-out" principle; recording the equipment state in the transfer process (such as the unloading car parking position, the ore storage bin number, etc.), realizing the raw material positioning; linkage with the sintering production process control system to feedback real-time quality data to support process adjustment.

[0039] The unloading system is a subsystem responsible for the initial unloading link of raw materials in the "raw material unloading and transfer platform system", which belongs to the hardware execution part. Its functions mainly include: performing physical unloading operation of raw materials (such as receiving raw materials from transport vehicles, ships); starting or stopping unloading equipment (such as unloading machines, conveyors, etc.) according to the instructions of the platform system; feeding back the unloading progress to the platform system to provide basic data for cumulative metering.

[0040] For example, when a batch of limestone powder arrives at the factory, the "unloading system" is responsible for unloading it from the transport ship to the temporary storage point in the factory area, and the "raw material unloading and transfer platform system" simultaneously records the unloading amount, associates the test batch number, and plans the subsequent transfer path.

[0041] In summary, the present application can be applied to all steel enterprises using solid raw materials in the sintering process. By taking the raw material accumulation measurement unit as a marker, the raw material is accurately positioned in the sintering production process, the sintering production adjustment process can be accurately adjusted according to the raw material quality, the sinter quality stability is improved, which is beneficial to the stable and smooth operation of the blast furnace, and the smelting cost is reduced.

[0042] The application can improve the quality of sintered ore products in the process of long process smelting of blast furnace, and is beneficial to the quality control of process products sintered ore. The application makes the quality control and adjustment of sintered ore traceable, accurately adjusts the parameters of the sintering production process according to the quality requirements of sintered ore, avoids the influence of sintered ore quality fluctuation on blast furnace smelting, improves the smoothness of blast furnace, and reduces the cost of molten iron.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Based on the ideal embodiments of the present application, the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A method for tracking the quality of raw materials in sintering production based on cumulative metering, characterized in that, Includes the following steps: S1. The raw material is measured as zero before initial unloading. The measured value is accumulated after unloading and use, and the raw material is used in the order of unloading. S2. The cumulative measurement value is used as the marker for the raw material variety, and the marker corresponds to the test batch number and the test result represented by the test batch number; S3. During the raw material transfer process, the raw materials are classified and located according to the location of the transfer system and the last transfer equipment. The cumulative tonnage of the raw material of that type unloaded into the corresponding storage tank since it entered use is recorded. S4. During the sintering process, based on the cumulative measurement value of the raw material variety being used, fed back by the batching weigher, the corresponding test batch number and the corresponding test result are obtained and fed back to the sintering production process control system. S5. Conduct raw material quality impact analysis on the accumulated production data, and optimize the sintering production process control parameters and raw material quality requirements.

2. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 1, characterized in that, In step S2, when a new raw material is unloaded, the cumulative measurement value corresponding to the raw material is a continuation of the cumulative measurement value of the previous raw materials of the same type, and corresponds to a unique test batch number.

3. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 1, characterized in that, It also includes establishing a raw material receiving and transfer platform system to control and manage the raw material receiving, unloading, and usage process.

4. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 1, characterized in that, The raw material unloading and transfer platform system includes: The metering module is used to accumulate and calculate the metering values ​​during the raw material receiving, unloading and use process, and generate the raw material cumulative metering unit; The storage module is used to store the test batch number, test results, and corresponding cumulative units of measurement of the raw materials; The positioning module is used to classify and locate raw materials according to the on / off status of the transfer system and the location where the last transfer device stops, and to record the cumulative tonnage range. The data interaction module is used to interact with the batching and metering scale and the sintering production process control system, and to feed back the test batch number and test results corresponding to the cumulative measurement value to the sintering production process control system.

5. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 4, characterized in that, The metering module can measure and accumulate different types of raw materials separately, and the initial measurement value of each raw material is zero.

6. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 4, characterized in that, During the raw material transfer process, the positioning module can track the location information of the transfer equipment in real time and store the location information in association with the raw material type and cumulative tonnage range.

7. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 4, characterized in that, The transfer equipment includes an unloading car. When the unloading system is activated and the unloading car stops at a specific storage tank, the system determines that the raw material is of the corresponding type and records the cumulative tonnage of the raw material of that type unloaded into the storage tank.

8. The method for tracking the quality of sintering production raw materials based on cumulative metering according to claim 1, characterized in that, In step S5, by acquiring the cumulative measurement value of raw materials, the corresponding test results and sintering production data, the accumulated production data is analyzed to assess the impact of raw material quality, thereby optimizing the sintering production process control parameters and raw material quality requirements.

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