Alloy charging method and system

Abstract

Embodiments of the present application provide an alloy feeding method and system, the method comprising determining a furnace number and a molten iron scrap weight, determining a steel grade corresponding to the furnace number and a station composition, determining a target low-position bin group based on the furnace number, calculating a type of alloy to be added and a weight of each alloy type based on the molten iron scrap weight, the steel grade and the station composition, controlling a high-position bin to discharge to a weighing hopper based on each alloy type, when the weight of the weighing hopper meets the weight of the alloy type to be discharged, controlling the weighing hopper to discharge the alloy to a belt conveyor, controlling the belt conveyor to start, simultaneously controlling a discharging trolley to move to a target low-position bin of the target low-position bin group, and adding the alloy to the target low-position bin, and controlling the target low-position bin to add the alloy to a corresponding converter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feeding control, in particular to an alloy feeding method and system. BACKGROUND

[0002] In the current converter steelmaking process, after the molten steel is completed, it is poured into a ladle from the converter. In order to adjust the composition of the molten steel, various alloys need to be added by the alloy feeding system at the same time during the process of pouring the molten steel from the converter into the ladle.

[0003] The current alloy feeding system usually has one set of feeding device corresponding to one converter, and the system construction investment is large and occupies a large area. For a steel enterprise with multiple converters in one plant and compact plant structure, the system construction investment is large, the area is large, and the number of silos is limited due to space reasons. SUMMARY

[0004] The purpose of the present application is to provide an alloy feeding method and system which can reduce system construction investment and reduce land occupation.

[0005] In order to achieve the above purpose, the technical scheme adopted by the embodiments of the present application is as follows:

[0006] In a first aspect, the embodiments of the present application provide an alloy feeding method applied to an alloy feeding system, the alloy feeding system comprising a plurality of high-position silo groups, a plurality of weighing hoppers, a belt conveyor, a discharging trolley and a plurality of low-position silo groups, each high-position silo group comprising a plurality of high-position silos, each high-position silo containing different materials, each low-position silo group comprising a plurality of low-position silos, each high-position silo group being in communication with one weighing hopper, the discharge pipe of each weighing hopper being connected to the upper side of the belt conveyor, the discharging trolley being arranged on the belt conveyor, the belt conveyor being arranged above each low-position silo group, each low-position silo group being used for feeding different converters, and the method comprising:

[0007] determining the heat number and the weight of molten iron and scrap steel;

[0008] determining the steel grade corresponding to the heat number and the composition at the station;

[0009] determining the target low-position silo group based on the heat number;

[0010] calculating the types of alloys to be added and the weight of each alloy type based on the weight of molten iron and scrap steel, the steel grade and the composition at the station;

[0011] controlling the high-position silos to discharge materials to the weighing hoppers based on each alloy type;

[0012] controlling the weighing hoppers to discharge the alloys to the belt conveyor when the weight of the weighing hoppers meets the weight of the discharged alloys.

[0013] controlling the belt conveyor to start, and controlling the unloading trolley to move to a target low-position stock bin of the target low-position stock bin group, and adding the alloy into the target low-position stock bin;

[0014] controlling the target low-position stock bin to add the alloy into the corresponding converter.

[0015] In an optional embodiment, the method further comprises:

[0016] calculating a first addition weight of each alloy kind based on the weight of each alloy kind;

[0017] The step of controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the weight of the alloy kind to be discharged comprises:

[0018] controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the first addition weight of the alloy kind to be discharged.

[0019] In an optional embodiment, the step of controlling the high-position stock bin to discharge the alloy to the weighing hopper based on each alloy kind comprises:

[0020] determining whether aluminum iron is contained in each alloy kind to be added;

[0021] controlling a first target high-position stock bin containing aluminum iron to discharge the aluminum iron to the weighing hopper when the aluminum iron is contained in each alloy kind to be added;

[0022] The step of controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the weight of the alloy kind to be discharged comprises: controlling the weighing hopper to discharge the aluminum iron from the weighing hopper to the belt conveyor when the weight of the weighing hopper reaches the first addition weight of the aluminum iron.

[0023] The step of controlling the belt conveyor to start, and controlling the unloading trolley to move to a target low-position stock bin of the target low-position stock bin group, and adding the alloy into the target low-position stock bin comprises:

[0024] controlling the belt conveyor to start and controlling the unloading trolley to add the aluminum iron from the belt conveyor to the first target low-position stock bin, wherein the first target low-position stock bin only adds aluminum iron.

[0025] In an optional embodiment, the step of controlling the high-position stock bin to discharge the alloy to the weighing hopper based on each alloy kind comprises:

[0026] determining other alloys in other alloy kinds to be added in addition to the aluminum iron;

[0027] determining, from each high-position bin, a corresponding second target high-position bin according to the alloy category of the other alloy;

[0028] determining an adding sequence of the other alloy;

[0029] determining a discharging sequence of each second target high-position bin based on the adding sequence;

[0030] controlling each second target high-position bin to discharge into the weighing hopper based on the discharging sequence.

[0031] In an optional embodiment, the step of controlling each second target high-position bin to discharge into the weighing hopper based on the discharging sequence comprises:

[0032] controlling a second target high-position bin ranked first to discharge a first category of alloy into the weighing hopper based on the discharging sequence;

[0033] controlling a second target high-position bin ranked second to discharge a second category of alloy into the weighing hopper when the weight of the weighing hopper reaches a first-time adding weight of the first category of alloy;

[0034] controlling a second target high-position bin ranked next to discharge a corresponding category of alloy into the weighing hopper when the weight of the weighing hopper reaches a sum of the first-time adding weight of the first category of alloy and a first-time adding weight of the second category of alloy, until the discharging sequence is completed.

[0035] In an optional embodiment, the method further comprises:

[0036] performing oxygen measurement analysis on the converter;

[0037] judging whether alloy needs to be added based on the analysis result;

[0038] calculating a second-time adding weight of each alloy to be added when the alloy needs to be added;

[0039] adding each alloy to be added into a corresponding low-position bin according to the second-time adding weight of each alloy to be added.

[0040] In an optional embodiment, the step of calculating a first-time adding weight of each alloy category based on the weight of each alloy category comprises:

[0041] calculating a product of the weight of each alloy category and a preset threshold value;

[0042] taking each product as the first-time adding weight of each alloy category.

[0043] In an optional embodiment, the step of controlling the high silo to discharge the alloy into the weighing hopper based on the alloy type comprises:

[0044] determining whether the first remaining alloy to be added includes carbon powder in addition to the aluminum iron and the other alloy;

[0045] when the first remaining alloy to be added includes carbon powder, controlling a second target high silo containing carbon powder to discharge the carbon powder into the weighing hopper;

[0046] the step of controlling the weighing hopper to discharge the alloy onto the belt conveyor when the weight of the weighing hopper meets the weight of the alloy type to be discharged comprises:

[0047] when the weight of the weighing hopper reaches the first addition weight of the aluminum iron, controlling the weighing hopper to discharge the carbon powder from the weighing hopper onto the belt conveyor;

[0048] the step of controlling the belt conveyor to start, and controlling the discharge trolley to move to a target low silo of the target low silo group and add the alloy to the target low silo comprises:

[0049] controlling the belt conveyor to start, and controlling the discharge trolley to add the carbon powder from the belt conveyor to a third target low silo, wherein the third target low silo only adds carbon powder.

[0050] In an optional embodiment, the step of controlling the high silo to discharge the alloy into the weighing hopper based on the alloy type comprises:

[0051] determining whether the second remaining alloy to be added includes a tempering agent in addition to the aluminum iron, the other alloy, and the carbon powder;

[0052] when the second remaining alloy to be added includes a tempering agent, controlling a third target high silo containing the tempering agent to discharge the tempering agent into the weighing hopper;

[0053] the step of controlling the weighing hopper to discharge the alloy onto the belt conveyor when the weight of the weighing hopper meets the weight of the alloy type to be discharged comprises:

[0054] when the weight of the weighing hopper reaches the first addition weight of the tempering agent, controlling the weighing hopper to discharge the carbon powder from the weighing hopper onto the belt conveyor;

[0055] the step of controlling the belt conveyor to start, and controlling the discharge trolley to move to a target low silo of the target low silo group and add the alloy to the target low silo comprises:

[0056] Controlling the belt conveyor to start and controlling the unloading trolley to add the conditioning agent from the belt conveyor to a fourth target low-position stock bin, wherein the fourth target low-position stock bin only adds the conditioning agent.

[0057] In a second aspect, the embodiments of the present application provide an alloy feeding system, which comprises a plurality of high-position stock bin groups, a plurality of weighing hoppers, a belt conveyor, an unloading trolley, a plurality of low-position stock bin groups, and a control unit. Each of the high-position stock bin groups comprises a plurality of high-position stock bins, and each of the high-position stock bins is placed with different materials. Each of the low-position stock bin groups comprises a plurality of low-position stock bins. Each of the high-position stock bin groups is in communication with one of the weighing hoppers. The discharge pipes of the weighing hoppers are connected to the upper part of the belt conveyor. The unloading trolley is arranged on the belt conveyor. The belt conveyor is arranged above each of the low-position stock bin groups. Each of the low-position stock bin groups is used for feeding different converters.

[0058] The control unit is used for determining a furnace number and a molten iron scrap weight, determining a steel grade and a station composition corresponding to the furnace number, determining a target low-position stock bin group based on the furnace number, calculating a type of alloy to be added and a weight of each type of alloy based on the steel grade and the station composition, controlling the high-position stock bins to discharge materials to the weighing hoppers based on the type of alloy, controlling the weighing hoppers to discharge the alloy to the belt conveyor when the weight of the alloy in the weighing hoppers meets the weight of the alloy to be added, controlling the belt conveyor to start and the unloading trolley to move to a target low-position stock bin of the target low-position stock bin group, and adding the alloy to the target low-position stock bin, and controlling the target low-position stock bin to add the alloy to a corresponding converter.

[0059] The present application has the following beneficial effects:

[0060] The application designs an alloy feeding system including multiple high-position bin groups, multiple weighing hoppers, a belt conveyor, a discharging trolley and multiple low-position bin groups. The high-position bin groups include multiple high-position bins, each of which is placed with different materials. The low-position bin groups include multiple low-position bins. Each high-position bin group is in communication with a weighing hopper. The discharge pipes of each weighing hopper are connected to the upper side of the belt conveyor. The discharging trolley is arranged on the belt conveyor. The belt conveyor is arranged above each low-position bin group. Each low-position bin group is used for feeding different converters. The furnace number and the weight of molten iron and scrap steel are determined. The steel grade and the composition at the station corresponding to the furnace number are determined. The target low-position bin group is determined based on the furnace number. Based on the steel grade and the composition at the station, the types of alloys to be added and the weights of the types of alloys are calculated. Based on the types of alloys, the high-position bins are controlled to discharge materials into the weighing hoppers. When the weight of the weighing hopper meets the weight of the types of alloys to be discharged, the weighing hopper is controlled to discharge the alloys into the belt conveyor. The belt conveyor is controlled to start. At the same time, the discharging trolley is controlled to move to the target low-position bin of the target low-position bin group. The discharging trolley is controlled to add the alloys into the target low-position bin. The target low-position bin is controlled to add the alloys into the corresponding converter. The system construction investment is reduced, and the land occupation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0062] Figure 1 One of the flowcharts of the alloy feeding method provided by the embodiments of the present application;

[0063] Figure 2 The structural schematic diagram of the alloy feeding system provided by the embodiments of the present application;

[0064] Figure 3 The second flowchart of the alloy feeding method provided by the embodiments of the present application;

[0065] Figure 4 The third flowchart of the alloy feeding method provided by the embodiments of the present application;

[0066] Figure 5 The fourth flowchart of the alloy feeding method provided by the embodiments of the present application;

[0067] Figure 6 The fifth flowchart of the alloy feeding method provided by the embodiments of the present application;

[0068] Figure 7A flowchart of a seventh embodiment of an alloy feeding method provided by the present application is shown in Figure 7.

[0069] Figure 8 A flowchart of a seventh embodiment of an alloy feeding method provided by the present application is shown in Figure 7. DETAILED DESCRIPTION

[0070] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0071] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0072] It should be noted that similar reference numerals and letters in the following drawings represent similar items, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0073] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0074] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0075] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" 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; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] The inventor found through a large number of researches that in the current converter steelmaking process, after the molten steel is completed, it is poured into a ladle from the converter. In order to adjust the composition of the molten steel, various types of alloy materials need to be added by the alloy feeding system at the same time during the process of pouring the molten steel from the converter into the ladle.

[0077] Currently, the alloy feeding system usually has one set of feeding device corresponding to one converter, and the system construction investment is large and occupies a large area. For a steel enterprise with multiple converters in a compact plant structure, the system construction investment is large, the area is large, and the number of material bins is limited due to space reasons. A collection hopper is used, and there is no control over the feeding sequence of different alloys. There is no distinction between whether different types of alloys can be added at the same time, and there is a problem of mixing different types of alloy materials, which is not conducive to improving the quality of the molten steel. A large number of weighing hoppers are used, so a large number of high-precision weighing sensors need to be provided, increasing the equipment maintenance cost. There is no high-position bin locking function, and quality accidents such as adding wrong alloys may occur during manual feeding.

[0078] In view of the above problems, the embodiment provides an alloy feeding method and system, which can reduce the system construction investment and reduce the area by designing an alloy feeding system including multiple high-position bin groups, multiple weighing hoppers, a belt conveyor, a discharging trolley, and multiple low-position bin groups. The high-position bin group includes multiple high-position bins, each of which contains different materials. The low-position bin group includes multiple low-position bins. Each high-position bin group is in communication with a weighing hopper. The discharge pipes of the weighing hoppers are connected to the upper part of the belt conveyor. The discharging trolley is arranged on the belt conveyor. The belt conveyor is arranged above each low-position bin group. Each low-position bin group is used for feeding different converters. The furnace number and the weight of molten iron and scrap steel are determined. The steel grade and the composition of the arrival station corresponding to the furnace number are determined. The target low-position bin group is determined based on the furnace number. Based on the steel grade and the composition of the arrival station, the types of alloys to be added and the weights of the alloy types are calculated. Based on the alloy types, the high-position bins are controlled to discharge the alloys into the weighing hoppers. When the weight of the weighing hopper meets the weight of the alloy types to be discharged, the weighing hopper is controlled to discharge the alloys into the belt conveyor. The belt conveyor is controlled to start, and the discharging trolley is controlled to move to the target low-position bin of the target low-position bin group. The discharging trolley is controlled to add the alloys into the target low-position bin. The target low-position bin is controlled to add the alloys into the corresponding converter. The following will be described in detail.

[0079] Please refer to Figure 1 for the flowchart of the alloy feeding method. The following will describe the method in detail.

[0080] The alloy feeding method is applied to a specially designed alloy feeding system, which is described in detail in Figure 2The structural schematic diagram of the alloy feeding system comprises a plurality of high-position bin groups 1, a plurality of weighing hoppers 2, a belt conveyor 3, a discharging trolley 4, a plurality of low-position bin groups 5 and a vibrating feeder 6. The high-position bin group 1 comprises a plurality of high-position bins 11, each of which is placed with different materials. The low-position bin group 5 comprises a plurality of low-position bins 51. Each high-position bin group 1 is in communication with a weighing hopper 2. The discharge pipe of each weighing hopper 2 is communicated to the upper portion of the belt conveyor 3. The discharging trolley 4 is arranged on the belt conveyor 3. The belt conveyor 3 is arranged above each low-position bin group 5. Each low-position bin group is used for feeding different converters.

[0081] It should be noted that the number of high-position bin groups can be set as a first preset number, for example, the first preset number can be 3, 4 or 5. The high-position bin group can comprise a second preset number of high-position bins, and the second preset number can be 4, 5 or 6. The first preset number and the second preset number are not limited in the embodiments of the present application.

[0082] The discharge pipes of the plurality of high-position bins 11 of each group are communicated to a weighing hopper 2. The plurality of high-position bin groups 1 are in communication with a plurality of weighing hoppers 2. The discharge pipes of the plurality of weighing hoppers 2 are communicated to the same belt conveyor 3. One discharging trolley 4 is arranged on the belt conveyor 3. Each converter corresponds to a plurality of low-position bins 51 of a low-position bin group 5. Each converter corresponds to a low-position bin group 5. The discharging trolley 4 can be parked above any one of the low-position bins 51 as needed, and the materials on the belt conveyor 3 can be discharged into the low-position bin 51.

[0083] Vibrating feeders 6 are arranged at the lower portions of all the high-position bins 11, the weighing hoppers 2 and the low-position bins 51. The start and stop of the vibrating feeders control whether the materials are conveyed to the next stage. When the vibrating feeder of the high-position bin 11 is started, the materials stored in the high-position bin are discharged into the weighing hopper 2. When the vibrating feeder of the weighing hopper 2 is started, the materials stored in the weighing hopper are discharged onto the belt conveyor 3. When the vibrating feeder of the low-position bin 51 is started, the materials stored in the low-position bin 51 are discharged into the ladle of the converter.

[0084] The order of storing the materials in the high-position bins is proved by the process and the site practice. The materials that can be mixed and added are placed in the same group, and the materials that cannot be mixed and added are placed in different groups. In addition, in order to improve the feeding efficiency, the four materials in the same group generally only need to be added with one or two of them in a batch of feeding.

[0085] For example, 12 high-position hoppers store 12 different materials, with 3 groups of high-position hopper groups, 12 high-position hoppers, 2 groups of low-position hopper groups, and 6 low-position hoppers. That is, the first group of high-position hopper groups respectively includes No. 1 high-position hopper, No. 2 high-position hopper, No. 3 high-position hopper, and No. 4 high-position hopper, the second group of high-position hoppers respectively includes No. 5 high-position hopper, No. 6 high-position hopper, No. 7 high-position hopper, and No. 8 high-position hopper, and the third group of high-position hopper groups respectively includes No. 9 high-position hopper, No. 10 high-position hopper, No. 11 high-position hopper, and No. 12 high-position hopper. Among them, the order of materials stored in No. 1 high-position hopper, No. 2 high-position hopper, No. 3 high-position hopper, No. 4 high-position hopper, No. 5 high-position hopper, No. 6 high-position hopper, No. 7 high-position hopper, No. 8 high-position hopper, No. 9 high-position hopper, No. 10 high-position hopper, No. 11 high-position hopper, and No. 12 high-position hopper is low-carbon ferromanganese, aluminum iron, low-titanium high-chromium, high-carbon ferrochrome, silicon iron, low-carbon ferrochrome, high manganese, carbon powder, silicon manganese, steelmaking modifier, ferrous sulfide, and high-purity silicon iron, respectively.

[0086] It should be noted that each high-position hopper and / or each low-position hopper can be provided with a locking function. According to the actual situation on site, some types of alloy will not be used in a certain period of time if a certain type of steel is produced. If the wrong type of alloy is added, it will cause a serious quality accident. Therefore, the high-position hoppers and / or the low-position hoppers of the system can have a locking function in any mode. That is, the operator can determine which hoppers are activated by clicking the operation screen. The lower vibrating feeder of the hopper that is not activated will not start, so that the mistake of adding alloy due to carelessness can be avoided to a certain extent.

[0087] It should be noted that the weighing sensor is installed in the weighing bucket 2, and the weight of the material in the current weighing bucket can be monitored in real time.

[0088] Step 101: Determine the furnace number and the weight of molten iron and scrap steel.

[0089] Step 102: Determine the steel grade corresponding to the furnace number and the composition at the station.

[0090] Step 103: Determine the target low-position hopper group based on the furnace number.

[0091] Step 104: Calculate the types of alloys to be added and the weight of each type of alloy based on the weight of molten iron and scrap steel, the steel grade, and the composition at the station.

[0092] Step 105: Control the high-position hoppers to discharge materials into the weighing bucket based on the types of alloys.

[0093] Step 106: When the weight of the weighing bucket meets the weight of the discharged alloy, control the weighing bucket to discharge the alloy to the belt conveyor.

[0094] Step 107: control the belt conveyor to start, and at the same time control the unloading trolley to move to the target low-position stock bin of the target low-position stock bin group, and add the alloy into the target low-position stock bin.

[0095] Step 108: control the target low-position stock bin to add the alloy into the corresponding converter.

[0096] After obtaining the furnace number and the weight of molten iron and scrap steel of the present smelting based on the plant management system of the converter, the steel grade and its station composition of the present smelting in the current furnace number are found in the vehicle management MES (Manufacturing Management System) system (or directly referred to as L2 system), and thus the alloy types to be added and the weight of each alloy type are calculated.

[0097] In an example, when the alloy types to be added include low-carbon ferromanganese, silicon manganese and ferrous sulphur, the high-position stock bin vibrating feeder corresponding to the high-position stock bin containing low-carbon ferromanganese is controlled to start, and the low-carbon ferromanganese is poured into the weighing hopper. When the weight of the material in the weighing hopper reaches A, the high-position stock bin vibrating feeder corresponding to the high-position stock bin containing silicon manganese is controlled to start, and the silicon manganese is poured into the weighing hopper. When the weight of the material in the weighing hopper reaches A+B, the high-position stock bin vibrating feeder corresponding to the high-position stock bin containing ferrous sulphur is controlled to start, and the ferrous sulphur is poured into the weighing hopper. When the weight of the material in the weighing hopper reaches A+B+C, the weighing hopper vibrating feeder starts, and the mixed material stored in the weighing hopper is poured onto the belt conveyor. Based on the determined furnace number, the target low-position stock bin group corresponding to the converter is determined, and the target low-position stock bin is determined from the target low-position stock bin group. The unloading trolley is controlled to add the mixed material into the target low-position stock bin, and the low-position stock bin vibrating feeder starts, and the low-carbon ferromanganese stored in the low-position stock bin is poured into the corresponding converter.

[0098] In another implementation, to realize automation, the alloy feeding system can further include a PLC control system and an HMI screen for writing bottom control logic to drive the action of the field alloy feeding system.

[0099] The alloy feeding system can further include an MES system and an alloy model system. The MES system is the original production control system of the plant, which can provide information such as furnace number, molten iron and scrap steel quality, smelted steel grade and its station composition. The alloy model system calculates the alloy types to be added and the weight of each alloy type based on the information provided by the MES system, so as to control the feeding actions of the high-position stock bin, the weighing hopper, the belt conveyor, the unloading trolley and the low-position stock bin of the alloy feeding system based on the alloy types to be added and the weight of each alloy type.

[0100] It should be noted that the alloy feeding system can realize three feeding modes, namely manual mode, single low-position stock bin automatic feeding mode and multi-position low-position stock bin automatic feeding mode.

[0101] In manual mode, all devices in the alloy feeding system are allowed to be manually controlled under the condition of meeting the safety interlocking. This mode is used in the maintenance state or to meet the extremely special process requirements.

[0102] Single low-position bin automatic feeding mode, which allows the preset alloy to be automatically added to the specified bin, and its working process is as follows:

[0103] Click the automatic button in the picture to switch the feeding mode to automatic, then check the low-position bins that need to be added in this feeding in the corresponding multiple low-position bins of the converter, and then set the set value of the alloy to be weighed in the weighing setting row. After setting, click the start feeding button, which will turn green. The belt conveyor starts, the unloading trolley drives to the target low-position bin position, and the alloy feeding system starts weighing each high-position bin in multiple high-position bin groups at the same time. If the high-position bin group includes three groups, each group corresponds to a weighing hopper, and each group of high-position bin groups contains four high-position bins and three groups of low-position bin groups, the system will weigh the materials in the four high-position bins in the same group in order according to the principle of small first. When the unloading trolley runs to the specified low-position bin position, the three weighing hoppers corresponding to the three high-position bin groups will unload the alloy onto the belt conveyor according to the principle of first weighing and then unloading. When the three weighing hoppers are unloaded, delay for a period of time to stop the belt. The operator can manually modify the feeding sequence number, which can be set to 1-4 high-position bins. It should be noted that the sequence numbers of the four high-position bins in the same group should not be repeated, otherwise the system will report an error.

[0104] Multiple low-position bin automatic feeding mode allows the operator to fill in all the alloy types to be added and the set value of the weight of the alloy to be added, and specify the names of the bottom bins of the four categories of aluminum-iron, other alloys, carbon powder, and tempering agent, so as to realize one-key weighing of all alloys. Its working process is as follows:

[0105] Select the automatic mode, and the alloy calculation model will calculate the alloy types to be added and the weight of each alloy corresponding to the material sheet, and set the target bottom bin of the four categories of aluminum-iron, other alloys, carbon powder, and tempering agent. Here, the bottom bin can be selected repeatedly. Click the full-automatic start button in the picture. If the interlocking condition is met, the button will turn green, indicating that the full-automatic feeding process is running. The system will complete the full-automatic feeding process in at least one and at most four single-bottom bin automatic feeding sub-processes in the order of aluminum-iron->other alloys->carbon powder->tempering agent. The specific number of processes is equal to the number of raw material categories input in the L2 setting bar.

[0106] Add in batches in the order of aluminum-iron->other alloys->carbon powder->tempering agent.

[0107] Once all materials are placed in the bottom silo, the automatic program will exit operation, and the fully automatic start button will change from green to gray. If you need to terminate the automatic batching process in advance, you can click the stop batching button.

[0108] Based on the implementation method of this application, the high-level silo, weighing hopper, belt conveyor, unloading trolley, and other equipment are shared by multiple converters, thus greatly saving system space and investment. Because the high-level silo is shared, the number of silos can be reduced, or more silos can be added to store more different types of alloys to meet more complex process requirements. Furthermore, each type of material only needs to be stored in one silo, significantly reducing the loading work of the high-level silo.

[0109] By optimizing the alloy feeding system, multiple high-level silos correspond to one weighing hopper, thus reducing the number of weighing hoppers required. The load cells equipped on each weighing hopper are crucial for its normal operation and require frequent maintenance and calibration. Reducing the number of weighing hoppers significantly reduces the workload of load cell maintenance and calibration.

[0110] The alloy charging system provided in this application has multiple low-level silos for each converter, which can store different types of materials at the same time and add them separately, avoiding the adverse effects on the process caused by mixing multiple materials stored in the same silo.

[0111] By automatically separating all materials into four categories—aluminum and iron, other alloys, carbon powder, and conditioning agents—and adding them in batches through program control, adverse process effects caused by mixing of materials can be avoided.

[0112] To increase the accuracy of the added alloy weight, such as Figure 3 As shown, it includes the following steps:

[0113] Step 301: Calculate the initial addition weight of each alloy type based on the weight of each alloy type.

[0114] Step 302: When the weight of the weighing hopper meets the initial addition weight of the alloy type to be fed, control the weighing hopper to feed the alloy to the belt conveyor.

[0115] There are several ways to calculate the initial weight addition. In one implementation, the weight of each alloy type is calculated as the product of a preset threshold; the product is then used as the initial weight addition for each alloy type.

[0116] It should be noted that the preset threshold can be set to 70%, 80%, 90%, etc., and this application embodiment does not impose specific restrictions on it.

[0117] For alloy feeding, the quality of molten steel can be improved by adding in the following order: aluminum iron -> other alloys -> carbon powder -> conditioning agent.

[0118] Referring to Figure 4 as shown, comprising the following steps:

[0119] Step 401: Determine whether aluminum iron is included in each alloy type to be added.

[0120] Step 402: When aluminum iron is included in each alloy type to be added, control the first target high-position bin containing aluminum iron to discharge aluminum iron into the weighing hopper.

[0121] Step 403: When the weight of the weighing hopper reaches the first addition weight of aluminum iron, control the weighing hopper to discharge aluminum iron from the weighing hopper onto the belt conveyor.

[0122] Step 404: Control the belt conveyor to start, and control the discharge trolley to add aluminum iron from the belt conveyor into the first target low-position bin.

[0123] Among them, the first target low-position bin only adds aluminum iron.

[0124] Aluminum iron must be added first because aluminum is a reducing agent. After adding aluminum iron first, aluminum can first react with oxygen in the molten steel, consuming part of the oxygen in the molten steel. This can to some extent avoid the oxidation of subsequent alloy components and the formation of metal oxides, wasting alloy.

[0125] When aluminum iron is included in each alloy type to be added, in order to improve the quality of molten iron, the addition order of each alloy type is limited, and aluminum iron is the first alloy type to be added.

[0126] That is, aluminum iron cannot be mixed and added with other alloy types. The discharge trolley moves to the first target low-position bin, the vibration feeder of the first target high-position bin containing aluminum iron starts, and aluminum iron is discharged into the weighing hopper corresponding to the first target high-position bin. When the weight of the weighing hopper corresponding to the first target high-position bin reaches the first addition weight of aluminum iron, the vibration feeder of the first target high-position bin stops, the vibration feeder of the weighing hopper starts, and after the weight of the weighing hopper is zero, the vibration feeder of the weighing hopper stops. The belt conveyor runs for 30s and then stops, and the discharge trolley discharges aluminum iron into the first target low-position bin.

[0127] The delayed start of the belt conveyor can avoid the addition of the previous material to the corresponding low-position bin, ensuring that the previous alloy feeding can be completed.

[0128] When aluminum iron is included in each alloy type to be added, and aluminum iron has been added to the first target low-position bin, the other alloys are discharged, as shown in Figure 5 as shown, comprising the following steps:

[0129] Step 501: determine other alloys in other alloy categories to be added, except aluminum iron.

[0130] Step 502: based on the alloy category of the other alloy, determine the corresponding second target high-position bin from each high-position bin.

[0131] Step 503: determine the addition sequence of the other alloy.

[0132] Step 504: based on the addition sequence, determine the discharge sequence of each second target high-position bin.

[0133] Step 505: based on the discharge sequence, control each second target high-position bin to discharge into the weighing hopper.

[0134] Other categories of alloys, in addition to aluminum iron, carbon powder, and tempering agent, are considered other alloys, and these alloys can be allowed to mix.

[0135] It should be noted that after the aluminum iron in the first target low-position bin is added to the converter, other alloys can be added to the first target low-position bin, the discharge trolley moves to the first target low-position bin, the vibration feeder of each second target high-position bin where the other alloys are located is started, and the same group is started in the set order. Different high-position bin groups start at the same time and do not interfere with each other. When different high-position bin groups start at the same time, the other alloy in the weighing hopper is discharged onto the belt conveyor according to the rule that the weighing hopper who first reaches the set weight starts to discharge the material. The belt conveyor runs for 30 seconds and then stops. The other alloy is unloaded into the first target low-position bin.

[0136] In another example, when aluminum iron is not included in the alloy categories to be added, the other alloys can occupy the target low-position bin originally occupied by aluminum iron.

[0137] For example, when the alloy categories to be added include aluminum iron, other alloys, carbon powder, and tempering agent, and the target low-position bins include the first target low-position bin, the second target low-position bin, and the third target low-position bin, it can be set that aluminum iron, carbon powder, and tempering agent can only be unloaded into the first target low-position bin, i.e., aluminum powder is discharged into the first target low-position bin, carbon powder is discharged into the first target low-position bin after the aluminum powder is discharged into the converter, and tempering agent is discharged into the first target low-position bin after the carbon powder is discharged into the converter. It can also be set that when any of the first target low-position bin, the second target low-position bin, and the third target low-position bin is in an empty state, aluminum iron, other alloys, carbon powder, or tempering agent is discharged into the target low-position bin in the empty state.

[0138] That is, the low-position bin can limit the placement category of the alloy, or it can not specifically limit the placement category of the alloy, which is not specifically limited here.

[0139] The specific manner of starting in the set order within the same group can be:

[0140] Based on the feeding sequence, the second target high-position bin with the first order of control is controlled to feed the first kind of alloy into the weighing hopper; when the weight of the weighing hopper reaches the first-time adding weight of the first kind of alloy, the second target high-position bin with the second order of control is controlled to feed the second kind of alloy into the weighing hopper; when the weight of the weighing hopper reaches the sum of the first-time adding weight of the first kind of alloy and the first-time adding weight of the second kind of alloy, the second target high-position bin with the next order of control is controlled to feed the corresponding kind of alloy into the weighing hopper, until the feeding sequence is completed.

[0141] For example, a certain high-position bin group contains 4 high-position bins, the feeding sequence of No. 1 high-position bin is 2, the feeding sequence of No. 2 high-position bin is 1, the feeding sequence of No. 3 high-position bin is 3, and the feeding sequence of No. 4 high-position bin is 4, then the four high-position bins of No. 1-4 will execute weighing in the order of No. 2, No. 1, No. 3 and No. 4. During weighing, because the weighing hopper is shared, the first bin needs to be weighed first, and then the second bin. Assuming that the weights of the bins to be fed are m1, m2, m3 and m4, first, the feeding of No. 2 bin is started, when the weight detection value of the weighing hopper is m2, the feeding of No. 2 bin is stopped, and the feeding of No. 1 bin is started; when the weight detection value of the weighing hopper is m2+m1, the feeding of No. 1 bin is stopped, and the feeding of No. 3 bin is started; when the weight detection value of the weighing hopper is m2+m1+m3, the feeding of No. 3 bin is stopped, and the feeding of No. 4 bin is started; when the weight detection value of the weighing hopper is m2+m1+m3+m4, the feeding of No. 4 bin is stopped, and the feeding of this group is completed.

[0142] When the aluminum-iron and other alloys are contained in the to-be-added alloy types and the aluminum-iron and other alloys have been added to the converter, the carbon powder is fed, as shown in Figure 6 The method comprises the following steps:

[0143] Step 601: determining whether the carbon powder is contained in the first remaining to-be-added alloy except the aluminum-iron and other alloys.

[0144] Step 602: when the carbon powder is contained in the first remaining to-be-added alloy, controlling the second target high-position bin containing the carbon powder to feed the carbon powder into the weighing hopper.

[0145] Step 603: when the weight of the weighing hopper reaches the first-time adding weight of the aluminum-iron, controlling the weighing hopper to feed the carbon powder from the weighing hopper to the belt conveyor.

[0146] Step 604: controlling the belt conveyor to start, and controlling the unloading trolley to add the carbon powder from the belt conveyor to the third target low-position bin.

[0147] The third target low-position bin only adds carbon powder.

[0148] When the tempering agent and the carbon powder are contained in each alloy kind to be added, the carbon powder needs to be added first and then the tempering agent. When the tempering agent is not contained in each alloy kind to be added, the carbon powder needs to be added last.

[0149] The carbon powder is used to adjust the carbon content of the molten steel, and it is a combustible material. If it is added too early, the molten steel will splash due to the violent reaction.

[0150] When the carbon powder is contained in the first remaining alloy to be added, the second target high-position bin containing the carbon powder starts vibrating the feeder, the weight of the weighing hopper corresponding to the second target high-position bin reaches the corresponding feeding weight, the second target high-position bin stops vibrating the feeder, the weighing hopper starts vibrating the feeder, and the weighing hopper stops vibrating the feeder when the weight of the weighing hopper is zero. After the belt runs for 30 seconds, the carbon powder falls into the third target low-position bin.

[0151] When the aluminum iron, other alloys and carbon powder are contained in each alloy kind to be added, and the aluminum iron, other alloys and carbon powder have been added to the converter, the tempering agent is discharged, as shown in FIG. 8, including the following steps: Figure 7

[0152] Step 701: Determine whether the tempering agent is contained in the second remaining alloy to be added except the aluminum iron, other alloys and carbon powder.

[0153] Step 702: When the tempering agent is contained in the second remaining alloy to be added, control the third target high-position bin containing the tempering agent to discharge the tempering agent into the weighing hopper.

[0154] Step 703: When the weight of the weighing hopper reaches the first addition weight of the tempering agent, control the weighing hopper to discharge the carbon powder from the weighing hopper onto the belt conveyor.

[0155] Step 704: Control the belt conveyor to start, and control the discharge trolley to add the tempering agent from the belt conveyor to the fourth target low-position bin.

[0156] The fourth target low-position bin only adds the tempering agent.

[0157] It should be noted that the fourth target low-position bin can be any empty low-position bin in the corresponding target low-position bin group. The steelmaking tempering agent must be added last. The steelmaking tempering agent used in this method has a similar composition to lime, and is mainly used for slag making, so that the slag floats on the uppermost layer of the molten steel for use in the refining process (the next process of converter steelmaking). If it is not added last, it will be rolled into the molten steel, affecting the purity of the molten steel.

[0158] ​When the tempering agent is contained in the second remaining alloy to be added, the third target high-position silo vibrating feeder loaded with the tempering agent is started, the weight of the weighing hopper corresponding to the third target high-position silo reaches the corresponding feeding weight, the third target high-position silo vibrating feeder is stopped, and the weighing hopper vibrating feeder is started. When the weight of the weighing hopper is zero, the weighing hopper vibrating feeder is stopped. After the belt conveyor runs for 30s, the carbon powder falls into the fourth target low-position silo.

[0159] It should be noted that the system will complete the full-automatic feeding process in at least one and at most four sub-processes of automatic feeding of single bottom silo according to the order of aluminum iron -> other alloy -> carbon powder -> tempering agent.

[0160] It should be noted that the target low-position silos of the four categories of aluminum iron, other alloy, carbon powder and tempering agent do not need to be set separately each time and can be pre-set.

[0161] Referring to Figure 8 , the method comprises the following steps:

[0162] Step 801: Perform oxygen measurement analysis on the converter.

[0163] Step 802: Determine whether additional alloy is needed based on the analysis result.

[0164] Step 803: When additional alloy is needed, calculate the secondary addition weight of each additional alloy.

[0165] Step 804: For the secondary addition weight of each additional alloy, add each additional alloy to the corresponding low-position silo.

[0166] After adding each alloy type to be added according to the corresponding primary addition weight, perform oxygen measurement analysis on the molten steel in the converter, determine whether additional alloy is needed based on the measurement result, determine the secondary addition weight of each additional alloy when additional alloy is needed, and add the additional alloy to the corresponding low-position silo. Add the additional alloy in the low-position silo to the corresponding converter.

[0167] It should be noted that the addition process of the additional alloy is similar to the primary addition weight of each alloy type, which will not be described here.

[0168] The embodiment of the present application also provides an alloy feeding system, which comprises a plurality of high-position bin groups, a plurality of weighing hoppers, a belt conveyor, a discharging trolley, a plurality of low-position bin groups and a control unit, each of the high-position bin groups comprises a plurality of high-position bins, different materials are placed in each of the high-position bins, each of the low-position bin groups comprises a plurality of low-position bins, each of the high-position bin groups is communicated with one of the weighing hoppers, a discharging pipe of each of the weighing hoppers is communicated to above the belt conveyor, the discharging trolley is arranged on the belt conveyor, the belt conveyor is arranged above each of the low-position bin groups, and each of the low-position bin groups is used for feeding different converters;

[0169] The control unit is used for:

[0170] determining a furnace number and a molten iron scrap weight;

[0171] determining a steel grade corresponding to the furnace number and a station composition;

[0172] determining a target low-position bin group based on the furnace number;

[0173] calculating a kind of alloy to be added and a weight of each of the kinds of alloy based on the steel grade and the station composition;

[0174] controlling high-position bins to discharge materials to the weighing hoppers based on each of the kinds of alloy;

[0175] controlling the weighing hoppers to discharge the alloy to the belt conveyor when a weight of the weighing hoppers meets a weight of the kind of alloy to be discharged;

[0176] controlling the belt conveyor to start, simultaneously controlling the discharging trolley to move to a target low-position bin of the target low-position bin group, and adding the alloy to the target low-position bin;

[0177] controlling the target low-position bin to add the alloy to a corresponding converter.

[0178] In the embodiments of the present disclosure, it should be understood that the disclosed apparatus and method can also be implemented in other manners. The embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operation of the apparatus, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts and block diagrams can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logic function. It should also be noted that, in some alternative implementations, the functions noted in the blocks can occur in a different order from that noted in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system for implementing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0179] In addition, the various functional modules in the embodiments of the present disclosure can be integrated together to form a separate part, or each module can exist independently, or two or more modules can be integrated to form a separate part. When the functions are realized in the form of software functional modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present disclosure can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0180] It is to be noted that, as used in this document, the term "indicia" is intended to encompass any visible or tactile indicia, and the term "indicia" is intended to encompass any visible or tactile indicia. Moreover, the term "indicia" is intended to encompass any visible or tactile indicia. Furthermore, the terms "comprise", "comprises" or "comprising" or any variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0181] The above description is only various embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An alloy charging method characterized by, The application is applied to an alloy feeding system, which comprises a plurality of high-position stock bin groups, a plurality of weighing hoppers, a belt conveyor, a discharging trolley and a plurality of low-position stock bin groups, each of the high-position stock bin groups comprises a plurality of high-position stock bins, each of the high-position stock bins is placed with different materials, each of the low-position stock bin groups comprises a plurality of low-position stock bins, each of the high-position stock bin groups is communicated with one of the weighing hoppers, the discharge pipes of each of the weighing hoppers are communicated to the upper side of the belt conveyor, the discharging trolley is arranged on the belt conveyor, the belt conveyor is arranged above each of the low-position stock bin groups, each of the low-position stock bin groups is respectively used for feeding different converters, and the method comprises the following steps: determining a furnace number and a molten iron scrap weight; determining a steel grade corresponding to the furnace number and a station composition; determining a target low-position stock bin group based on the furnace number; calculating alloy types to be added and the weights of the alloy types based on the molten iron scrap weight, the steel grade and the station composition; controlling the high-position stock bins to discharge materials to the weighing hoppers based on the alloy types; controlling the weighing hoppers to discharge the alloys to the belt conveyor when the weights of the weighing hoppers meet the weights of the alloy types to be discharged; controlling the belt conveyor to start and controlling the discharging trolley to move to a target low-position stock bin of the target low-position stock bin group and add the alloys to the target low-position stock bin; controlling the target low-position stock bin to add the alloys to a corresponding converter; wherein the step of controlling the high-position stock bins to discharge materials to the weighing hoppers based on the alloy types comprises the following steps: judging whether the alloys to be added include aluminum-iron; controlling a first target high-position stock bin containing aluminum-iron to discharge the aluminum-iron to the weighing hopper when the alloys to be added include aluminum-iron; controlling the weighing hopper to discharge the aluminum-iron from the weighing hopper to the belt conveyor when the weight of the weighing hopper reaches a first adding weight of the aluminum-iron; controlling the belt conveyor to start and controlling the discharging trolley to add the aluminum-iron from the belt conveyor to a first target low-position stock bin, wherein the first target low-position stock bin only adds aluminum-iron; determining other alloys in other alloy types to be added except the aluminum-iron; determining corresponding second target high-position stock bins from the high-position stock bins based on the alloy types of the other alloys; determining an adding sequence of the other alloys; determining a discharging sequence of each of the second target high-position stock bins based on the adding sequence; and controlling each of the second target high-position stock bins to discharge to the weighing hopper based on the discharging sequence; judging whether carbon powder is included in first remaining alloys to be added except the aluminum-iron and the other alloys; controlling a third target high-position stock bin containing carbon powder to discharge the carbon powder to the weighing hopper when the first remaining alloys to be added include carbon powder; controlling the weighing hopper to discharge the carbon powder from the weighing hopper to the belt conveyor when the weight of the weighing hopper reaches a first adding weight of the carbon powder; controlling the belt conveyor to start and controlling the discharging trolley to add the carbon powder from the belt conveyor to a third target low-position stock bin, wherein the third target low-position stock bin only adds carbon powder.

2. The method of claim 1, wherein, The method further comprises the following steps: calculate a first addition weight of each alloy category based on a weight of each alloy category; the step of controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the weight of the alloy category to be discharged, comprises: controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the first addition weight of the alloy category to be discharged.

3. The method of claim 1, wherein, the step of controlling each second target high-position bin to discharge to the weighing hopper based on the discharge sequence, comprises: controlling a second target high-position bin ranked first to discharge a first category of alloy to the weighing hopper based on the discharge sequence; controlling a second target high-position bin ranked second to discharge a second category of alloy to the weighing hopper when the weight of the weighing hopper reaches the first addition weight of the first category of alloy; controlling a second target high-position bin ranked next to discharge a corresponding category of alloy to the weighing hopper when the weight of the weighing hopper reaches the sum of the first addition weight of the first category of alloy and the first addition weight of the second category of alloy, until the discharge sequence is completed.

4. The method of claim 1, wherein, the method further comprises: performing oxygen measurement analysis on the converter; judging whether additional alloy is needed based on the analysis result; calculating a second addition weight of each additional alloy when additional alloy is needed; adding each additional alloy to a corresponding low-position bin according to the second addition weight of each additional alloy.

5. The method of claim 2, wherein, the step of calculating a first addition weight of each alloy category based on a weight of each alloy category, comprises: calculating a product of the weight of each alloy category and a preset threshold value; using each product as the first addition weight of each alloy category.

6. The method of claim 1, wherein, the step of controlling high-position bins to discharge to the weighing hopper based on each alloy category, comprises: determining whether a tempering agent is included in the second remaining alloy to be added, in addition to the aluminum iron, the other alloy, and the carbon powder; controlling a fourth target high-position bin containing the tempering agent to discharge the tempering agent to the weighing hopper when the tempering agent is included in the second remaining alloy to be added; the step of controlling the weighing hopper to discharge the alloy to the belt conveyor when the weight of the weighing hopper meets the weight of the alloy category to be discharged, comprises: controlling the weighing hopper to discharge the tempering agent from the weighing hopper to the belt conveyor when the weight of the weighing hopper reaches the first addition weight of the tempering agent; the step of controlling the belt conveyor to start, simultaneously controlling the unloading trolley to move to a target low-position bin of the target low-position bin group, and adding the alloy to the target low-position bin, comprises: controlling the belt conveyor to start, and controlling the unloading trolley to add the tempering agent from the belt conveyor to the fourth target low-position bin, wherein the fourth target low-position bin only adds the tempering agent.

7. An alloy feeding system characterized by, The method is executed as claimed in any one of claims 1-6, and the alloy feeding system comprises a plurality of high-position bin groups, a plurality of weighing hoppers, a belt conveyor, a discharging trolley, a plurality of low-position bin groups, and a control unit, each of the high-position bin groups comprises a plurality of high-position bins, each of the high-position bins is placed with different materials, each of the low-position bin groups comprises a plurality of low-position bins, each of the high-position bin groups is in communication with one of the weighing hoppers, a discharge pipe of each of the weighing hoppers is connected to the top of the belt conveyor, the discharging trolley is arranged on the belt conveyor, the belt conveyor is arranged above each of the low-position bin groups, and each of the low-position bin groups is used for feeding different converters; The control unit is used for: determining a furnace number and a molten iron scrap weight; determining a steel grade corresponding to the furnace number and a station composition; determining a target low-position bin group based on the furnace number; calculating alloy types to be added and the weight of each of the alloy types based on the molten iron scrap weight, the steel grade, and the station composition; controlling the high-position bins to discharge materials to the weighing hoppers based on each of the alloy types; controlling the weighing hoppers to discharge the alloys to the belt conveyor when the weight of the weighing hoppers meets the weight of the discharged alloy types; controlling the belt conveyor to start, and simultaneously controlling the discharging trolley to move to a target low-position bin of the target low-position bin group, and adding the alloys to the target low-position bin; controlling the target low-position bin to add the alloys to a corresponding converter.

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