Control method for producing aluminum-silicon alloy liquid through electro-eutectoid tank

Abstract

The invention provides a control method for producing aluminum-silicon alloy liquid by an electro-eutectoid tank, which comprises the following steps: controlling the electro-eutectoid tank to enter a roasting stage, and obtaining the temperature of the electro-eutectoid tank corresponding to the roasting stage; when the temperature reaches a preset starting temperature, the electro-eutectoid tank is controlled to enter a starting stage; the step of controlling the electro-eutectoid tank to enter the production stage from the starting stage comprises the step of controlling the anode lifting height interval of the electro-eutectoid tank based on the voltage noise of the electro-eutectoid tank in the production stage; controlling the blanking amount of aluminum oxide and silicon dioxide based on the voltage of the electro-eutectoid tank in the production stage; the blanking amount of aluminum fluoride is controlled based on the working duration of the electro-eutectoid tank in the production stage; controlling the voltage corresponding to the suction amount of the silicon-aluminum alloy liquid based on the lifting height of the anode in the electro-eutectoid tank in the production stage; and controlling the voltage of the electro-eutectoid tank to be maintained in a preset range based on the voltage corresponding to the anode lifting height, the blanking amount of the aluminum oxide and the silicon dioxide, the blanking amount of the aluminum fluoride and the suction amount of the silicon-aluminum alloy liquid, so as to obtain the silicon-aluminum alloy liquid.

Description

Technical Field

[0001] The invention relates to the technical field of metal smelting, and in particular to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell. Background Art

[0002] High-alumina fly ash and high-alumina coal gangue are one of the main solid wastes generated in the process of coal resource development and utilization.

[0003] Using high-aluminum fly ash and high-aluminum coal gangue to extract aluminum silicon oxide with alumina and silicon dioxide as the main components, and then using this aluminum silicon oxide as a raw material to produce aluminum silicon alloy liquid is an effective way to utilize high-aluminum fly ash and high-aluminum coal gangue. However, there is currently a lack of technical solutions for using aluminum silicon oxide to produce aluminum silicon alloy liquid. Therefore, how to use aluminum silicon oxide to produce aluminum silicon alloy liquid has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present invention provides a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell, which is used to solve the defect that aluminum-silicon alloy liquid cannot be produced by using aluminum-silicon oxide in the prior art.

[0005] In one aspect, the present invention provides a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell, comprising:

[0006] Controlling the electro-eutectoid cell to enter a roasting stage, and obtaining the temperature of the electro-eutectoid cell corresponding to the roasting stage;

[0007] When the temperature reaches a preset start-up temperature, controlling the electroeutectoid cell to enter a start-up phase;

[0008] Controlling the electroeutectoid cell from the startup phase to the production phase comprises:

[0009] Based on the voltage noise of the electroeutectoid cell in the production stage, controlling the anode lifting height interval range of the electroeutectoid cell;

[0010] Based on the voltage of the electroeutectoid cell in the production stage, controlling the feeding amount of alumina and silicon dioxide;

[0011] Based on the working time of the electroeutectoid cell in the production stage, controlling the feeding amount of aluminum fluoride;

[0012] Based on the anode lifting height in the electroeutectoid cell during the production stage, controlling the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed;

[0013] Based on the voltages corresponding to the anode lifting height, the feeding amounts of aluminum oxide and silicon dioxide, the feeding amount of aluminum fluoride and the absorption amount of the silicon-aluminum alloy liquid, the voltage of the electroeutectoid cell in the production stage is controlled to be maintained within a preset range to obtain silicon-aluminum alloy liquid.

[0014] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, based on the magnitude of the voltage noise of the electroeutectoid cell in the production stage, the range of the anode lifting height of the electroeutectoid cell is controlled, comprising:

[0015] The anode height of the electroeutectoid cell is controlled to increase as the voltage noise of the electroeutectoid cell in the production stage increases; or, the anode height of the electroeutectoid cell is controlled to decrease as the voltage noise of the electroeutectoid cell in the production stage decreases.

[0016] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, the feeding amount of aluminum oxide and silicon dioxide is controlled based on the voltage of the electroeutectoid cell in the production stage, comprising:

[0017] Calculating a first difference between a voltage of the electroeutectoid cell in the production stage and a specified voltage;

[0018] When the first difference is greater than the maximum value of the preset interval, selecting an excessive amount of material to be discharged;

[0019] When the first difference falls within the preset interval, a normal material discharge amount is selected;

[0020] When the first difference is less than the minimum value of the preset interval, selecting the under-feeding amount;

[0021] Among them, the supply amounts corresponding to the excess feeding amount, the normal feeding amount, and the under-feeding amount decrease in sequence, and the supply amount of alumina and silicon dioxide of the normal feeding amount is equal to the consumption of alumina and silicon dioxide in the electroeutectoid cell.

[0022] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, based on the anode lifting height in the electroeutectoid cell in the production stage, the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed is controlled, comprising:

[0023] When receiving an instruction to extract aluminum-silicon alloy liquid, calculating a second difference between the voltage of the electroeutectoid cell based on the production stage and the specified voltage;

[0024] When the second difference is greater than the first threshold, the anode position of the electroeutectoid cell in the production stage is reduced to obtain a reduced voltage; wherein the difference between the reduced voltage and the specified voltage is less than the first threshold.

[0025] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, the feeding amount of aluminum fluoride is controlled based on the working time of the electroeutectoid cell in the production stage, including:

[0026] When the working time of the electroeutectoid cell in the production stage is an integer multiple of the first preset time, aluminum fluoride is controlled to be discharged according to the preset material amount.

[0027] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid tank provided by the present invention, controlling the electroeutectoid tank to enter a production stage from the startup stage also includes:

[0028] Based on the working time of the electroeutectoid cell in the production stage, the replacement of the anode of the electroeutectoid cell is controlled.

[0029] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, the control of replacing the anode of the electroeutectoid cell based on the working time of the electroeutectoid cell in the production stage comprises:

[0030] When the working time of the electroeutectoid cell in the production stage is an integer multiple of the second preset time, after raising the anode position of the electroeutectoid cell in the production stage, replacing the anode of the electroeutectoid cell;

[0031] When the voltage of the corresponding electroeutectoid cell remains constant within a third preset time period after the anode of the electroeutectoid cell is replaced, the position of the anode of the electroeutectoid cell is lowered to the position before the increase.

[0032] According to a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention, lowering the anode position of the electroeutectoid cell to the position before the raising comprises:

[0033] Dividing the distance between the position of the anode of the electroeutectoid cell before and after the anode is elevated into a plurality of intervals;

[0034] The anode position of the electroeutectoid cell is lowered to the position before the elevation according to the preset time interval and each of the interval segments.

[0035] The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the present invention comprises the following steps: controlling the electroeutectoid cell to enter a roasting stage, and obtaining the temperature of the electroeutectoid cell corresponding to the roasting stage; when the temperature reaches a preset starting temperature, controlling the electroeutectoid cell to enter a starting stage; controlling the anode lifting height of the electroeutectoid cell based on the voltage noise of the electroeutectoid cell in the production stage; controlling the feeding amount of aluminum oxide and silicon dioxide based on the voltage of the electroeutectoid cell in the production stage; controlling the feeding amount of aluminum fluoride based on the working time of the electroeutectoid cell in the production stage; controlling the voltage corresponding to the absorption amount of silicon-aluminum alloy liquid based on the anode lifting height in the electroeutectoid cell in the production stage; and controlling the voltage of the electroeutectoid cell in the production stage to be maintained within a preset range based on the anode lifting height, the feeding amounts of aluminum oxide and silicon dioxide, the feeding amount of aluminum fluoride, and the absorption amount of silicon-aluminum alloy liquid, so as to obtain silicon-aluminum alloy liquid. The present invention ensures the voltage stability of the electroeutectoid cell during the production stage by controlling the height of the anode position, avoids voltage overflow, realizes the stable production of silicon-aluminum alloy liquid, and obtains the required silicon-aluminum alloy liquid by controlling the feeding amount of aluminum oxide and silicon dioxide, which is very simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a schematic flow chart of a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided in an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of voltage noise and voltage of an electro-eutectoid cell in an embodiment of the present invention;

[0039] Figure 3 Schematic diagram of the feeding amount of aluminum oxide and silicon dioxide and the voltage of the electroeutectoid cell in an embodiment of the present invention;

[0040] Figure 4 Schematic diagram of the voltage of the electroeutectoid cell during the process of extracting aluminum-silicon alloy liquid in an embodiment of the present invention;

[0041] Figure 5 Schematic diagram of the voltage of the electroeutectoid cell during the process of replacing the anode in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Figure 1 It is a flow chart of a control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided in an embodiment of the present invention.

[0044] like Figure 1 As shown, the control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided in an embodiment of the present invention can be executed by a computer or a tablet computer, or by an electronic device such as a single-chip microcomputer. The executing body can obtain signals such as voltage, current, and temperature of the electroeutectoid cell, and the current of the electroeutectoid cell is a constant value. The feeding of aluminum silicon oxide (aluminum oxide and silicon dioxide), the feeding of aluminum fluoride, and the lifting and lowering of the anode can also be controlled. The method mainly includes the following steps:

[0045] 101. Control the electroeutectoid cell to enter a roasting stage, and obtain the temperature of the electroeutectoid cell corresponding to the roasting stage.

[0046] In this step, the temperature of the electroeutectoid cell corresponding to the roasting stage of the electroeutectoid cell can generally be measured manually, and the measured temperature is manually entered, so that the temperature of the electroeutectoid cell can be obtained. It can be understood that the function of the electroeutectoid cell is to produce aluminum-silicon alloy liquid, the anode of the electroeutectoid cell (the anode can move up and down) is located at the upper end of the electroeutectoid cell, and the cathode is located at the lower end of the electroeutectoid cell. The obtained aluminum-silicon alloy liquid can also be located at the lower end of the electroeutectoid cell, that is, the aluminum-silicon alloy liquid can be connected to the cathode, and an electrolyte can be added between the anode and the cathode. The electrolyte is used to melt aluminum silicon oxide. The roasting stage can adopt electric heating roasting or gas roasting (such as natural gas roasting), etc., which is not specifically limited in this embodiment. The roasting stage can generally last for several days. In some other schemes, one electrolytic cell is often used to produce aluminum solution, and another electrolytic cell is used to produce silicon solution. The aluminum solution and the silicon solution are then mixed in a specified proportion to obtain an aluminum-silicon alloy liquid. This is very cumbersome, and the cost is also higher because two electrolytic cells are required to electrolyze different solutions. Compared with the above problems, this embodiment can achieve electroeutectoid of aluminum oxide and silicon dioxide, which has the effect of saving costs and improving production efficiency.

[0047] 102. When the temperature reaches the preset starting temperature, the electro-eutectoid cell is controlled to enter the starting stage.

[0048] In this step, during the process of starting the electro-eutectoid cell, the lifting and lowering of the anode of the electro-eutectoid cell can be controlled according to a preset voltage step to prevent the anode from rising too fast and separating from the electrolyte, and to prevent the anode from falling too fast or the anode position from being too low to squeeze the electrolyte out of the electro-eutectoid cell. During the startup phase, the voltage fluctuation of the electro-eutectoid cell may be relatively high. For example, the voltage in the production phase can be maintained at 4 volts, and the voltage in the startup phase can reach 7 volts or 8 volts. Therefore, it is necessary to control the lifting and lowering of the anode of the electro-eutectoid cell according to a preset voltage step. During the startup of the electro-eutectoid cell, aluminum liquid can be added to the electrolyte. When the aluminum liquid is located below the electrolyte, that is, when the electrolyte and the metal liquid are separated, it can be indicated that the startup is complete.

[0049] After step 102, the electro-eutectoid cell may be controlled to enter a production phase from a startup phase, which may include:

[0050] 103. Based on the voltage noise of the electroeutectoid cell during the production stage, the range of the anode lifting height of the electroeutectoid cell is controlled.

[0051] 104. Control the feeding amount of alumina and silica based on the voltage of the electroeutectoid cell during the production stage.

[0052] 105. Control the amount of aluminum fluoride fed based on the working time of the electroeutectoid cell in the production stage.

[0053] In this step, the electrolyte will be consumed during the production stage, so it is necessary to control the feeding amount of aluminum fluoride to maintain the balance of the electrolyte.

[0054] 106. Based on the anode lifting height in the electroeutectoid cell during the production stage, the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed is controlled.

[0055] In this step, the amount of silicon-aluminum alloy liquid in the electroeutectoid cell can affect the voltage of the electroeutectoid cell.

[0056] 107. Based on the voltages corresponding to the anode lifting height, the feeding amounts of aluminum oxide and silicon dioxide, the feeding amounts of aluminum fluoride and the absorption amount of silicon-aluminum alloy liquid, the voltage of the electroeutectoid cell is controlled to be maintained within a preset range during the production stage to obtain silicon-aluminum alloy liquid.

[0057] In this step, after the electroeutectoid cell is started, it can be operated at a specified voltage, and the specified voltage can be set, and can be set to a specific value, or can be set to the above-mentioned preset range, which is not specifically limited in this embodiment. The silicon-aluminum alloy liquid can be used to make automobile wheels or other equipment production, which is not specifically limited in this embodiment.

[0058] In this embodiment, the electroeutectoid cell is controlled to enter the roasting stage, and the temperature of the electroeutectoid cell corresponding to the roasting stage is obtained; when the temperature reaches the preset starting temperature, the electroeutectoid cell is controlled to enter the starting stage; based on the size of the voltage noise of the electroeutectoid cell in the production stage, the anode lifting height of the electroeutectoid cell is controlled; based on the voltage of the electroeutectoid cell in the production stage, the feeding amount of aluminum oxide and silicon dioxide is controlled; based on the working time of the electroeutectoid cell in the production stage, the feeding amount of aluminum fluoride is controlled; based on the anode lifting height in the electroeutectoid cell in the production stage, the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed is controlled; based on the voltage corresponding to the anode lifting height, the feeding amount of aluminum oxide and silicon dioxide, the feeding amount of aluminum fluoride and the amount of silicon-aluminum alloy liquid absorbed, the voltage of the electroeutectoid cell in the production stage is controlled to be maintained within a preset range to obtain silicon-aluminum alloy liquid. This embodiment ensures the stability of the voltage of the electroeutectoid cell during the production stage by controlling the height of the anode position, avoids voltage overflow, and realizes the stable production of silicon-aluminum alloy liquid. In addition, by controlling the feeding amount of alumina and silicon dioxide, as well as the feeding amount of aluminum fluoride, the required silicon-aluminum alloy liquid can be obtained, which is very simple and convenient.

[0059] In one embodiment of the present specification, based on the magnitude of the voltage noise of the electroeutectoid cell in the production stage, the range of the anode lifting height of the electroeutectoid cell is controlled, including:

[0060] The anode height of the electroeutectoid cell is controlled to increase as the voltage noise of the electroeutectoid cell increases during the production stage; or, the anode height of the electroeutectoid cell is controlled to decrease as the voltage noise of the electroeutectoid cell decreases during the production stage.

[0061] In this embodiment, the voltage of the electroeutectoid cell in the production stage can be measured, and the voltage noise can be obtained by subtracting the specified voltage from the measured voltage. The specified voltage can be a voltage range, such as the preset range described in the above embodiment, or it can be a specific voltage value in the preset range (when the specified voltage is a preset range, any value in the preset range, such as the maximum value or the minimum value, can be subtracted when calculating the voltage noise). The greater the voltage noise, the larger the voltage range of the electroeutectoid cell is required to avoid voltage noise overflow. Therefore, the height of the anode increases with the increase of voltage noise, that is, the greater the noise, the larger the range of the anode lifting height. Similarly, the smaller the noise, the smaller the range of the anode lifting height. For example, see Figure 2 , Figure 2 Schematic diagram of voltage noise and voltage of an electro-eutectoid cell in an embodiment of the present invention. Figure 2 When the voltage noise is greater than the noise threshold, the voltage range of the electro-eutectoid cell (for example, a value of 3.8-4.2 volts) is greater than the voltage range of the electro-eutectoid cell when the voltage noise is less than the noise threshold (for example, a value of 3.9-4.1 volts).

[0062] In one embodiment of the present specification, based on the voltage of the electroeutectoid cell in the production stage, the feeding amount of alumina and silicon dioxide is controlled, including:

[0063] Calculating a first difference between a voltage of the electroeutectoid cell in a production phase and a specified voltage;

[0064] When the first difference is greater than the maximum value of the preset interval, selecting an excessive amount of material to be discharged;

[0065] When the first difference falls within the preset range, the normal material feeding amount is selected;

[0066] When the first difference is less than the minimum value of the preset interval, the under-feeding amount is selected;

[0067] Among them, the supply amounts corresponding to the excess feeding amount, the normal feeding amount, and the under-feeding amount decrease in sequence, and the supply amount of alumina and silica of the normal feeding amount is equal to the consumption of alumina and silica in the electroeutectoid cell.

[0068] In this embodiment, the concentration of alumina and silica in the electro-eutectoid cell can affect the voltage of the electro-eutectoid cell. Generally, the voltage increases when the concentration decreases, and the voltage decreases when the concentration increases. Although the amount of material to be fed can be adjusted by detecting the concentration of alumina and silica in the electro-eutectoid cell, the process of solution sampling and detecting solution samples is cumbersome and inefficient. However, this embodiment can adjust the amount of material to be fed according to the voltage of the electro-eutectoid cell. The concept is novel and ingenious, and it is very simple and efficient. Specifically, see Figure 3 , Figure 3 It is a schematic diagram of the feeding amount of alumina and silica and the voltage of the electroeutectoid cell in the embodiment of the present invention. When the feeding amount is under-supplied, the voltage of the electroeutectoid cell will increase. The more under-supplied, the higher the voltage will be, and it is necessary to use an excessive feeding amount to reduce the voltage; when the feeding amount is an excessive feeding amount, the voltage of the electroeutectoid cell will decrease. The more over-supplied, the lower the voltage will be, and it is necessary to use an under-feeding amount to increase the voltage; when the feeding amount is a normal feeding amount, the voltage remains constant. The supply of alumina and silica in the normal feeding amount is equal to the consumption of alumina and silica in the electroeutectoid cell, which means that the average supply of alumina and silica in the electroeutectoid cell per unit time is equal to the average consumption. The unit time can be set, and is not specifically limited here.

[0069] In this embodiment, the average consumption of alumina and silica in the electroeutectoid cell per unit time can be obtained by pre-testing. The supply amounts corresponding to the excess feeding amount, the normal feeding amount, and the under-feeding amount decrease in sequence. For example, assuming that the supply amount of aluminum silicon oxide (alumina and silica) is the same each time, the supply time interval of aluminum silicon oxide in the excess feeding amount is less than the supply time interval of the normal feeding amount, and the supply time interval of the normal feeding amount is less than the supply time interval of the under-feeding amount. Alternatively, if the supply time interval of aluminum silicon oxide (alumina and silica) is the same each time, the single supply amount of aluminum silicon oxide in the excess feeding amount is greater than the single supply amount of aluminum silicon oxide in the normal feeding amount, and the single supply amount of aluminum silicon oxide in the normal feeding amount is greater than the single supply amount of aluminum silicon oxide in the under-feeding amount.

[0070] In this embodiment, the first difference is compared with a preset interval instead of comparing the first difference with a specific value, which can avoid changing the material feeding amount too frequently, which is beneficial to prolonging the service life of the required equipment and stabilizing the control system. The preset interval can be set and is not specifically limited here.

[0071] In one embodiment of the present specification, based on the anode lifting height in the electroeutectoid cell in the production stage, the voltage corresponding to the amount of silicon aluminum alloy liquid absorption is controlled, including:

[0072] When receiving an instruction to extract aluminum-silicon alloy liquid, calculating a second difference between the voltage of the electroeutectoid cell in the production stage and the specified voltage;

[0073] When the second difference is greater than the first threshold, based on the correlation between the anode height and the voltage, the anode position of the electroeutectoid cell in the production stage is reduced to obtain a reduced voltage; wherein the difference between the reduced voltage and the specified voltage is less than the first threshold.

[0074] In this embodiment, the higher the height of the anode, the greater the voltage of the electroeutectoid cell. When the instruction of the electroeutectoid cell to absorb the aluminum-silicon alloy liquid is received, the aluminum-silicon alloy liquid in the electroeutectoid cell can be extracted. The amount of aluminum-silicon alloy liquid in the electroeutectoid cell can affect the voltage of the electroeutectoid cell. Generally, after the aluminum-silicon alloy liquid is reduced, the voltage of the electroeutectoid cell will increase. Therefore, the extraction process of the aluminum-silicon alloy liquid can be reflected by the voltage in the electroeutectoid cell during the production stage. When the voltage of the electroeutectoid cell increases, it means that the aluminum-silicon alloy liquid is absorbed. Therefore, it is necessary to lower the position of the anode to maintain the stability of the voltage and facilitate the stable production of the aluminum-silicon alloy liquid. The first threshold value can be set, and no specific limitation is made here. When the second difference is greater than the first threshold value, it indicates that the voltage is too high. When the difference between the voltage after the reduction and the specified voltage is less than the first threshold value, it indicates that the voltage of the electroeutectoid cell has been reduced to a normal value, such as a value in the preset range described in the above embodiment.

[0075] Specifically, see Figure 4 , Figure 4 It is a schematic diagram of the voltage of the electroeutectoid cell during the process of extracting aluminum-silicon alloy liquid in an embodiment of the present invention. Before extracting the aluminum-silicon alloy liquid, the voltage of the electroeutectoid cell in the production stage is a specified voltage (i.e., a value in the preset range of the aforementioned embodiment). During the process of extracting the aluminum-silicon alloy liquid, the voltage of the electroeutectoid cell in the production stage will increase. When the voltage of the electroeutectoid cell in the production stage exceeds the upper limit (i.e., the second difference between the voltage of the electroeutectoid cell in the production stage and the specified voltage is greater than the first threshold), the anode position of the electroeutectoid cell is lowered to reduce the voltage of the electroeutectoid cell in the production stage to obtain a reduced voltage, wherein the difference between the reduced voltage and the specified voltage is less than the first threshold (the voltage of the electroeutectoid cell in the production stage after the reduction belongs to the preset range, for example, 3.8 to 4.2 volts, and this value is only used for explanation and does not impose any limitation on the present invention). After the extraction of the aluminum-silicon alloy liquid is completed, the voltage of the electroeutectoid cell in the production stage will not increase again.

[0076] In one embodiment of the present specification, based on the working time of the electroeutectoid cell in the production stage, the feeding amount of aluminum fluoride is controlled, including:

[0077] When the working time of the electroeutectoid cell in the production stage is an integer multiple of the first preset time, the aluminum fluoride is controlled to be discharged according to the preset material amount.

[0078] In this embodiment, aluminum fluoride is controlled to be discharged according to a preset amount according to an integer multiple of the first preset time, that is, aluminum fluoride is controlled to be discharged according to a preset amount at each interval of the first preset time. By controlling the discharge of aluminum fluoride at intervals of the first preset time, the molar ratio of sodium fluoride to aluminum fluoride in the electrolyte can be ensured to be within a preset ratio range. The electrolyte is mainly composed of molten cryolite and aluminum oxide dissolved therein, and may also contain a small amount of calcium fluoride and magnesium fluoride, lithium fluoride, sodium fluoride, etc. This implementation can determine the consumption of the first preset time of aluminum fluoride in the electroeutectoid cell by pre-testing. The first preset time can generally be taken as 1 day, of course, other values ​​can also be taken, such as 2 days or 3 days, which are not specifically limited in this embodiment.

[0079] In one embodiment of the present specification, controlling the electro-eutectoid cell from the startup phase to the production phase also includes:

[0080] Based on the working time of the electroeutectoid cell in the production stage, the replacement of the anode of the electroeutectoid cell is controlled.

[0081] In this embodiment, the anode of the electroeutectoid cell will be gradually consumed during the production stage (electrolysis process). Therefore, based on the working time of the electroeutectoid cell in the production stage, the replacement of the anode of the electroeutectoid cell is controlled to avoid using excessively consumed anodes for production, which is conducive to maintaining the stability of the production stage and facilitating the stable production of aluminum-silicon alloy liquid. Each time the anode of the electroeutectoid cell is replaced, only a part of the anode can be replaced. It can be understood that the consumption of aluminum fluoride and aluminum silicon oxide in the electroeutectoid cell per unit time, the consumption of the anode, and the specified voltage of the electroeutectoid cell involved in this specification can all be obtained through pre-testing.

[0082] In one embodiment of the present specification, based on the working time of the electroeutectoid cell in the production stage, controlling the replacement of the anode of the electroeutectoid cell includes:

[0083] When the working time of the electroeutectoid cell in the production stage is an integer multiple of the second preset time, the anode position of the electroeutectoid cell in the production stage is raised, and then the anode of the electroeutectoid cell is replaced;

[0084] When the voltage of the corresponding electroeutectoid cell remains constant within the third preset time period after the anode of the electroeutectoid cell is replaced, the position of the anode of the electroeutectoid cell is lowered to the position before the increase.

[0085] In this embodiment, when the working time of the electro-eutectoid cell in the production stage is an integer multiple of the second preset time, the anode position is raised, which also means that the anode position of the electro-eutectoid cell in the production stage is raised at every time interval of the second preset time. The second preset time can generally be any value in 30-40 days, such as 36 days. The specific position where the anode needs to be raised can be determined according to the actual production stage, and is not specifically limited here. Considering that the process of replacing the anode of the electro-eutectoid cell may cause insufficient energy in the electro-eutectoid cell, therefore, before replacing the anode of the electro-eutectoid cell, it is necessary to first raise the anode position of the electro-eutectoid cell to increase the voltage of the electro-eutectoid cell and replenish energy for the electro-eutectoid cell, thereby ensuring the stable operation of the production stage during the process of replacing the anode. When the voltage of the electro-eutectoid cell after the voltage is raised remains constant within the third preset time, it means that the replacement of the anode has ended, therefore, the anode position of the electro-eutectoid cell is lowered to the position before the increase to avoid energy waste. This embodiment judges the replacement process of the anode by the voltage of the electro-eutectoid cell, which is very novel and clever. The above-mentioned preset time lengths can be set, and are not specifically limited here.

[0086] Specifically, see Figure 5 , Figure 5It is a schematic diagram of the voltage of the electro-eutectoid cell during the process of replacing the anode in an embodiment of the present invention. Before replacing the anode, it is necessary to first raise the anode position of the electro-eutectoid cell. After the anode is raised, the voltage of the electro-eutectoid cell after the anode position is raised will be higher than the specified voltage. In the process of replacing the anode, when the anode is taken out, the voltage of the electro-eutectoid cell will have a momentary increase (when the anode is taken out, there is a momentary decrease in the conductive area, and the voltage is increased), and then it will fall back to the voltage after the anode is raised; when the anode is installed in place, the voltage of the electro-eutectoid cell will have a momentary decrease (when the anode is installed, there is a momentary increase in the electrolyte, the contact area with the anode increases, and the voltage decreases), and then it will fall back to the voltage after the anode is raised. Therefore, when it is detected that the voltage of the electro-eutectoid cell is increased, it is detected that the voltage of the electro-eutectoid cell after the increase remains constant within the third preset time length, indicating that the anode replacement is over. Alternatively, when it is detected that the voltage of the electro-eutectoid cell is increased, it is detected that the voltage after the increase has increased and then decreased, and after the voltage of the electro-eutectoid cell after the increase has remained constant within the third preset time length, indicating that the anode replacement is over.

[0087] In one embodiment of the present specification, lowering the anode position of the electroeutectoid cell to the position before the elevation includes:

[0088] Dividing the distance between the position of the anode of the electroeutectoid cell before and after the elevation into a plurality of intervals;

[0089] The anode position of the electroeutectoid cell is lowered to the position before the elevation according to the preset time interval and each interval segment.

[0090] In this embodiment, if the anode is lowered too quickly, it is easy to cause instability in the electrolysis process. Therefore, in order to avoid the above problem, the distance between the position of the anode of the electroeutectoid cell before and after the elevation is divided into multiple intervals, and the anode position of the electroeutectoid cell is lowered to the position before the elevation according to the preset time interval and each interval. Figure 5 , the distance between the position of the anode of the electroeutectoid cell before and after the elevation is divided into three intervals, and after lowering the anode position three times, the anode position of the electroeutectoid cell is lowered to the position before the elevation (that is, the voltage is restored to the specified voltage). For example, assuming that the anode is raised by 9 cm, the centimeter can be divided into 3 intervals, each interval is 3 cm, and the anode is lowered by 3 cm after each preset time interval until the anode is lowered by 9 cm. The above-mentioned method of lowering the anode is to adopt a gradient descent method, which is conducive to ensuring the stability of the electrolysis process.

[0091] In some other embodiments of the present invention, various parameters in the above embodiments can be displayed through a monitoring interface, for example, the voltage of the electroeutectoid cell, the temperature, the molar ratio of sodium fluoride and aluminum fluoride, the concentration of aluminum silicon oxide, the height of the anode, etc.

[0092] The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell of the present invention is introduced below through some specific embodiments.

[0093] Embodiment 1:

[0094] The equipment for producing aluminum-silicon alloy liquid includes a 13KA aluminum-silicon electro-eutectoid cell, an intelligent cell control machine (executing subject, such as a single-chip microcomputer) as a carrier for implementing the control strategy, and a monitoring host (display system for displaying the collected information of the electro-eutectoid cell). The intelligent cell control machine can be connected to both the electro-eutectoid cell and the monitoring host for signal connection. The production raw materials include aluminum silicon oxide, anode, aluminum fluoride, etc. With the above control strategy, during the roasting stage, the intelligent tank control machine can be in manual state, only monitoring the parameters of the electroeutectoid tank (such as temperature), without any action output; during the startup stage (that is, the material stage, for example, cryolite and alumina are changed from solid to liquid, and the molten electrolyte can be located above the molten metal), the intelligent tank control machine is in manual state, and the anode lifting is manually adjusted when the electrolyte liquid and aluminum liquid are poured in (the time taken to lift the anode each time during the startup stage is relatively long, for example, it takes several seconds, such as any value between 2 and 4 seconds), after the aluminum liquid is poured in, the intelligent tank control machine is switched to automatic unloading state, and the anode lifting is manually adjusted according to the preset voltage step (the anode action time is relatively long during the startup stage, and it cannot be raised or lowered too quickly, and it is safer to manually adjust the position of the anode); During the normal production stage (that is, after the startup is completed), the intelligent tank control machine is in an automatic state, involving the following control strategies: executing the anode lifting control strategy based on the voltage noise, and the average voltage is maintained within the set voltage (the specified voltage in the aforementioned embodiment) ±50mv range; executing the aluminum silicon oxide feeding control strategy, and the concentrations of aluminum oxide and silicon dioxide in the electrolyte are maintained within a preset range; manually or automatically adding aluminum fluoride, and the molecular ratio (mainly the molar ratio of sodium fluoride and aluminum fluoride) is maintained within the target range; executing the alloy liquid suction control strategy, and the average voltage during the suction period is maintained within the preset range; executing the anode replacement control strategy, during the anode replacement period, the anode lifting is automatically controlled according to the preset additional voltage curve, and the material is kept on demand. After the anode is replaced, the production process of the electro-eutectoid cell remains stable.

[0095] Embodiment 2:

[0096] The equipment for producing aluminum-silicon alloy liquid includes 6 500KA aluminum-silicon electroeutectoid cells, 6 intelligent cell controllers, and a monitoring host. The intelligent cell controllers are connected to the electroeutectoid cells one by one, and each intelligent cell controller is connected to the monitoring host signal. The production raw materials include aluminum silicon oxide, anode, aluminum fluoride, etc. Using the above control strategy, during the roasting stage, the intelligent cell controller is in manual state, only monitoring parameters (such as temperature) and no action output. During the startup phase, the intelligent cell controller can be in manual state, and the anode lifting is manually adjusted when the electrolyte liquid and aluminum liquid are poured in. After the aluminum liquid is poured in, the intelligent cell controller switches to the automatic timing unloading state, and the anode lifting is manually adjusted according to the preset voltage step. During the normal production stage, the intelligent cell control machine is in an automatic state, involving the following control strategies: executing the anode lifting control strategy based on the voltage noise, and maintaining the daily average voltage within the set voltage (the specified voltage of the aforementioned embodiment) ±30mv; executing the aluminum silicon oxide feeding control strategy, and maintaining the concentrations of aluminum oxide and silicon dioxide in the electrolyte within a preset range; executing the automatic addition of aluminum fluoride strategy, and maintaining the molecular ratio (mainly the molar ratio of sodium fluoride and aluminum fluoride) within a set range; executing the automatic control strategy when sucking out the alloy liquid, and maintaining the average voltage during the suction period within a preset range; executing the anode replacement control strategy, and automatically controlling the anode lifting and lowering according to the preset additional voltage curve during the anode replacement, maintaining on-demand feeding, and maintaining the stable production process of the electro-eutectoid cell after the anode replacement.

[0097] On the other hand, the present invention further provides a computer program product, which includes a computer program. The computer program can be stored in a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method for producing aluminum-silicon alloy liquid in an electroeutectoid tank provided by the above methods, the method including: controlling the electroeutectoid tank to enter a roasting stage, and obtaining the temperature of the electroeutectoid tank corresponding to the roasting stage;

[0098] When the temperature reaches the preset start-up temperature, the electro-eutectoid cell is controlled to enter the start-up phase;

[0099] Control the electro-eutectoid cell from the startup phase to the production phase, including:

[0100] Based on the voltage noise of the electro-eutectoid cell in the production stage, the anode lifting height of the electro-eutectoid cell is controlled;

[0101] Control the amount of alumina and silica to be fed based on the voltage of the electro-eutectoid cell during the production phase;

[0102] Control the amount of aluminum fluoride fed based on the working time of the electroeutectoid cell during the production stage;

[0103] Based on the anode lifting height in the electroeutectoid cell during the production phase, the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed is controlled;

[0104] Based on the voltages corresponding to the anode lifting height, the feeding amounts of alumina and silicon dioxide, the feeding amounts of aluminum fluoride and the absorption amount of silicon-aluminum alloy liquid, the voltage of the electroeutectoid cell during the production stage is controlled to be maintained within a preset range to obtain silicon-aluminum alloy liquid.

[0105] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell provided by the above methods, the method comprising: controlling the electroeutectoid cell to enter a roasting stage, and obtaining the temperature of the electroeutectoid cell corresponding to the roasting stage;

[0106] When the temperature reaches the preset start-up temperature, the electro-eutectoid cell is controlled to enter the start-up phase;

[0107] Control the electro-eutectoid cell from the startup phase to the production phase, including:

[0108] Based on the voltage noise of the electro-eutectoid cell in the production stage, the anode lifting height of the electro-eutectoid cell is controlled;

[0109] Control the amount of alumina and silica to be fed based on the voltage of the electro-eutectoid cell during the production phase;

[0110] Control the amount of aluminum fluoride fed based on the working time of the electroeutectoid cell during the production stage;

[0111] Based on the anode lifting height in the electroeutectoid cell during the production phase, the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed is controlled;

[0112] Based on the voltages corresponding to the anode lifting height, the feeding amounts of alumina and silicon dioxide, the feeding amounts of aluminum fluoride and the absorption amount of silicon-aluminum alloy liquid, the voltage of the electroeutectoid cell during the production stage is controlled to be maintained within a preset range to obtain silicon-aluminum alloy liquid.

[0113] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0114] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell, characterized in that: include: Controlling the electro-eutectoid cell to enter a roasting stage, and obtaining the temperature of the electro-eutectoid cell corresponding to the roasting stage; When the temperature reaches a preset start-up temperature, controlling the electroeutectoid cell to enter a start-up phase; Controlling the electroeutectoid cell from the startup phase to the production phase comprises: Based on the voltage noise of the electroeutectoid cell in the production stage, controlling the anode lifting height interval range of the electroeutectoid cell; Based on the voltage of the electroeutectoid cell in the production stage, controlling the feeding amount of alumina and silicon dioxide; Controlling the amount of aluminum fluoride fed based on the working time of the electroeutectoid cell in the production stage; Based on the anode lifting height in the electroeutectoid cell during the production stage, controlling the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed; Based on the voltages corresponding to the anode lifting height, the feeding amounts of aluminum oxide and silicon dioxide, the feeding amount of aluminum fluoride and the absorption amount of the silicon-aluminum alloy liquid, the voltage of the electroeutectoid cell in the production stage is controlled to be maintained within a preset range to obtain silicon-aluminum alloy liquid.

2. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 1, characterized in that: Based on the voltage noise of the electroeutectoid cell in the production stage, controlling the anode lifting height interval range of the electroeutectoid cell includes: The anode height of the electroeutectoid cell is controlled to increase as the voltage noise of the electroeutectoid cell in the production stage increases; or, the anode height of the electroeutectoid cell is controlled to decrease as the voltage noise of the electroeutectoid cell in the production stage decreases.

3. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 1, characterized in that: Based on the voltage of the electroeutectoid cell in the production stage, the feeding amount of alumina and silicon dioxide is controlled, including: Calculating a first difference between a voltage of the electroeutectoid cell in the production stage and a specified voltage; When the first difference is greater than the maximum value of the preset interval, selecting an excessive amount of material to be discharged; When the first difference falls within the preset interval, a normal material discharge amount is selected; When the first difference is less than the minimum value of the preset interval, selecting the under-feeding amount; Among them, the supply amounts corresponding to the excess feeding amount, the normal feeding amount, and the under-feeding amount decrease in sequence, and the supply amount of alumina and silicon dioxide of the normal feeding amount is equal to the consumption of alumina and silicon dioxide in the electroeutectoid cell.

4. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 1, characterized in that: Based on the anode lifting height in the electroeutectoid cell in the production stage, controlling the voltage corresponding to the amount of silicon-aluminum alloy liquid absorbed includes: When receiving an instruction to extract aluminum-silicon alloy liquid, calculating a second difference between the voltage of the electroeutectoid cell based on the production stage and the specified voltage; When the second difference is greater than the first threshold, based on the correlation between the anode height and the voltage, the anode position of the electroeutectoid cell in the production stage is reduced to obtain a reduced voltage; wherein the difference between the reduced voltage and the specified voltage is less than the first threshold.

5. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 1, characterized in that: Based on the working time of the electroeutectoid cell in the production stage, the feeding amount of aluminum fluoride is controlled, including: When the working time of the electroeutectoid cell in the production stage is an integer multiple of the first preset time, aluminum fluoride is controlled to be discharged according to the preset material amount.

6. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 1, characterized in that: Controlling the electroeutectoid cell from the startup phase to the production phase also includes: Based on the working time of the electroeutectoid cell in the production stage, the replacement of the anode of the electroeutectoid cell is controlled.

7. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 6, characterized in that: The controlling the replacement of the anode of the electroeutectoid cell based on the working time of the electroeutectoid cell in the production stage includes: When the working time of the electroeutectoid cell in the production stage is an integer multiple of the second preset time, after raising the anode position of the electroeutectoid cell in the production stage, replacing the anode of the electroeutectoid cell; When the voltage of the corresponding electroeutectoid cell remains constant within a third preset time period after the anode of the electroeutectoid cell is replaced, the position of the anode of the electroeutectoid cell is lowered to the position before the increase.

8. The control method for producing aluminum-silicon alloy liquid in an electroeutectoid cell according to claim 7, characterized in that: The step of lowering the anode position of the electroeutectoid cell to a position before the raising step comprises: Dividing the distance between the position of the anode of the electroeutectoid cell before and after the anode is elevated into a plurality of intervals; The anode position of the electroeutectoid cell is lowered to the position before the elevation according to the preset time interval and each of the interval segments.

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