Pretreatment method of ardealite for producing gypsum plaster board

Abstract

The invention relates to a pretreatment method of ardealite for producing a gypsum plaster board, which comprises the following steps of: adopting a production line formed by a treatment cavity comprising an ultrasonic device, a heating device and a rotating device, a specially designed screener and a flotation machine; and the master control equipment performs real-time preprocessing process control by using a pre-trained large model according to the operation parameters transmitted by the equipment, so that a relatively low-cost and efficient intelligent preprocessing process of small-batch phosphogypsum is realized.

Description

Technical Field

[0001] The invention relates to a pretreatment method for phosphogypsum, in particular to a pretreatment method for phosphogypsum used in the production of paper-faced gypsum boards, and belongs to the field of building material production. Background Art

[0002] In the conventional treatment of gypsum board, only the pretreatment steps are analyzed, and no complete production line is provided for this purpose. Each step of a large pretreatment production line requires separate configuration of corresponding equipment, and the overall cost is not small, which may not be affordable for small enterprises with small batches. Therefore, for small batch production, a new production line must be considered. Integrate various pretreatment steps and consider how to use artificial intelligence to coordinate. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, for the pretreatment of small batches of phosphogypsum, the present invention provides a pretreatment method for phosphogypsum for the production of paper-faced gypsum boards, which comprises adopting the following production line: The invention comprises a processing chamber with an exhaust valve arranged on a rotatable device, a screener, a first conveyor belt, a flotation machine, a second conveyor belt, a ball mill, and a third conveyor belt, wherein the first conveyor belt conveys the phosphogypsum after screening to the flotation machine, the second conveyor belt conveys the phosphogypsum after flotation to the ball mill, and the third conveyor belt leads to the processing chamber for further calcination, wherein: The first flange and the second flange are respectively arranged at both ends of the processing chamber, the first flange has a through hole for deionized water and reagents to be introduced, and the second flange is connected to the first pumping device through a pipeline. Ultrasonic devices and heating devices are arranged on both sides of the length direction of the processing chamber to respectively adhere to the surface of the processing chamber to transmit ultrasonic waves and heat to the inside of the processing chamber, which are respectively used for vibration enhancement treatment effects in water washing and neutralization treatment, and calcination. The rotatable device, the screener, the flotation machine, the ball mill, the first pumping device, the ultrasonic device and the heating device are connected to the master control device, and are used to use the pre-trained large model to perform real-time pre-treatment process control according to the transmitted operating parameters; specifically including: S1 The raw materials are loaded into the processing chamber, and after the first flange and the second flange are installed, the master control device controls the operation of the rotatable device and the ultrasonic device, and controls the deionized water to enter the processing chamber for circulating water washing-pumping treatment. After the last pumping of S2 is completed, the master control device controls the reagent to enter the processing chamber for neutralization, and finally pumps out water, turns off the ultrasonic device, and starts the heating device for drying.

[0004] It will be readily appreciated that both devices are still in operation until the step described in which the rotatable device and the ultrasonic device are stopped.

[0005] S3 removes the first flange and the second flange, and sends the dried material into the sifter for sieving. S4 first conveyor belt sends the screened materials to the flotation machine for flotation. S5 The second conveyor belt conveys the flotation material after flotation into the ball mill for ball milling. S6 The third conveyor carries the ball mill material to the processing chamber, loads the material and starts the heating device for calcination.

[0006] Optionally, the processing chamber is a tubular double-layer casing with stainless steel on the outside and corundum on the inside. The rotatable device includes a base for supporting the middle part of the processing chamber, and the base has a shaft through which a driven gear is passed. The driven gear meshes with the driving gear at the output end of the motor, and the motor is connected to the general control device.

[0007] Optionally, the exhaust valve is connected to an air pressure measuring device of a master control device.

[0008] Optionally, deionized water and reagents are respectively contained in supply tanks controlled by the master control device.

[0009] Optionally, there are multiple ultrasonic devices and heating devices, and each is connected by a connecting rod, so that a mobile vehicle can be used to fix and support the connecting rod to perform the operations of clinging and moving away. The connecting rod has a universal joint and rotates with the rotatable device.

[0010] Optionally, the screener includes a shell, and a plurality of layers of shaking tables arranged vertically in the shell, each layer of the shaking tables is provided with sorting membranes with mesh sizes decreasing from top to bottom, and the first conveyor belt is located under the bottom layer of the shaking tables.

[0011] Optionally, the flotation machine comprises a cavity, a motor with a stirring paddle, and a second pumping device, wherein the height of the second pumping device is preset, and after the preset mixed material is mixed, the pumping port can be located at the bottom of the surface floating layer, wherein the cavity is provided with a feeding port, thereby the floating layer is sucked by the second pumping device.

[0012] Optionally, the number of cycles of the circulating water washing-pumping treatment is 2-5 times.

[0013] Optionally, when the parameters deviate from the preset values, the master control device controls to stop the running devices such as the rotatable device, the screen, the flotation machine, the ball mill, the first pumping device, the ultrasonic device and the heating device for maintenance.

[0014] Optionally, the dried material is sent to a sifter for sieving via a piston pusher.

[0015] Optionally, the calcination temperature is 120-200°C.

[0016] Optionally, the method of using a pre-trained large model to perform real-time pre-processing process control according to the transmitted operating parameters includes: Q1 inputs historical parameters into the big model to make real-time judgments on whether there are abnormalities at each moment in history, as well as the parameters and process strategies of each device at the next moment; Q2 uses abnormal and normal data judgment training to enable the large model to predict and output the normal range of each device parameter at each moment, so as to monitor the comparison abnormality between the predicted data and the actual transmitted parameters; Q3 inputs the transmitted operating parameters into the pre-trained large model to predict in real time whether the current parameters are normal, as well as the parameters and process strategies of each device at the next moment. Beneficial Effects

[0017] Through specially designed processing chambers, screens, flotation machines, and master control equipment with large-scale model prediction, a relatively low-cost and efficient intelligent pretreatment process for small batches of phosphogypsum is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a production line used in a method for pretreating phosphogypsum for producing gypsum board according to the present invention, Figure 2 Schematic diagram of the detailed structure of the processing chamber. Figure 3 Schematic diagram of the double-layer casing structure of the processing chamber. Figure 4 Schematic diagram of the mobile vehicle structure. Figure 5 Schematic diagram of the structure of the sifter. Figure 6 Schematic diagram of the flotation machine structure. Figure 7 Schematic diagram of the principle of real-time preprocessing process control using a pre-trained large model, where the reference numerals are, 1. Ultrasonic device, 2. Heating device, 3. First flange, 4. Second flange, 5. First pumping device, 6. General control device, 7. Rotatable device, 8. Driven gear, 9. Driving gear, 10. Motor, 11. Screener, 12. Flotation machine, 13. Ball mill, 14. Motor with stirring paddle, 15. Stirring paddle, 16. Feeding port, 17. Second pumping device, A, B, C are shaking tables equipped with sorting membranes of different mesh sizes, respectively, and a, b, c are the first to third conveyor belts, respectively. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, a method for pretreating phosphogypsum for producing gypsum board, the method comprising adopting the following production line: Including a rotatable device 7 provided with an exhaust valve ( Figure 2 ) processing chamber, screener 11, first conveyor belt a, flotation machine 12, second conveyor belt b, ball mill 13, third conveyor belt c, the first conveyor belt a conveys the phosphogypsum that has been screened to the flotation machine 11 for flotation, the second conveyor belt b conveys the phosphogypsum that has been flotated to the ball mill 13 for ball milling, and the third conveyor belt c leads to the processing chamber for calcination.

[0020] like Figure 2 As shown, the first flange 3 and the second flange 4 are respectively arranged at both ends of the treatment chamber, and the first flange 3 has two openings for deionized water and reagents to be introduced respectively, and they are respectively contained in tanks controlled by the general control device 6. The second flange 4 is connected to the first pumping device 5 through a pipeline, and multiple ultrasonic devices 1 and multiple heating devices 2 are respectively connected by connecting rods on both sides of the length direction of the treatment chamber, so as to respectively adhere to the surface of the treatment chamber to transmit ultrasonic waves and heat to the inside of the treatment chamber, and are respectively used for vibration enhancement treatment effects in water washing and neutralization treatment, and calcination. The rotatable device, the sifter 11, the flotation machine 12, the ball mill 13, the first pumping device 5, the ultrasonic device 1 and the heating device 2 are all connected to the general control device 6, and are used to use the pre-trained large model to perform real-time pre-treatment process control according to the transmitted operating parameters.

[0021] Among them, Figure 3 As shown, the processing chamber is a tubular double-layer casing with stainless steel on the outside and corundum on the inside. The stainless steel is used for heat transfer, and the corundum is used for carrying phosphogypsum and calcining high temperature resistance, and both can transmit ultrasonic waves.

[0022] like Figure 4 As shown, the operation of clinging and moving away is performed by using a fixed support connecting rod of the mobile vehicle, and the connecting rod has a universal joint and rotates with the rotatable device 7. The fixed support connecting rod is fixed on the mobile vehicle body.

[0023] like Figure 1 As shown, specifically, the rotatable device 7 can be composed of a driven gear 8 having a rotating shaft and arranged on the base, and a driving gear 9 arranged on the output end of a motor 10 controlled by the master control device 6 and driving the driven gear 8 to rotate. In this way, when the motor 10 is started, the processing chamber can rotate like a seesaw, so that the material and the deionized water or reagent are mixed more quickly and evenly with the ultrasonic wave of the super device 1.

[0024] like Figure 5As shown, the sifter 11 includes a housing, and three shaking tables C, B and A arranged from bottom to top in the housing, and each layer of shaking tables C, B and A is provided with a sorting membrane with decreasing and increasing mesh numbers. After the dried material is put into the housing, the three shaking tables are simultaneously started by the master control device 6. Impurities of different fineness and fine screens filtered by the sorting membranes on the three layers of shaking tables fall into the first conveyor belt and are transmitted out.

[0025] like Figure 6 As shown, the flotation machine 12 includes a cavity, a motor 14 with a stirring paddle 15 is arranged on the cavity, and a second pumping device 17 is arranged on the cavity, and a feeding port 16 is arranged on the cavity. The height of the second pumping device 17 is preset, and the pumping port can be located at the bottom of the surface floating layer after the preset mixed material is mixed. In this way, the pumping direction starts from the bottom of the floating layer until the surface floating layer is pumped clean, and the flotation is completed.

[0026] like Figure 7 As shown, the method of using a pre-trained large model to perform real-time pre-processing process control according to the transmitted operating parameters includes: Q1 inputs historical parameters into the big model and uses the softmax function to make real-time judgments on whether there is an abnormality at each moment in history, as well as the parameters and process strategies of each device at the next moment; Q2 is trained through judgment of abnormal and normal data, so that the large model predicts and outputs the normal range of each device parameter at each moment (generally required to be within the error range of 0.1%, and this range is reduced as the processing volume increases), so as to be used to monitor the comparison abnormalities between the predicted data and the actual transmitted parameters; Q3 inputs the transmitted operating parameters into the pre-trained large model to predict in real time whether the current parameters are normal, as well as the parameters and process strategies of each device at the next moment.

[0027] The method specifically comprises: S1 raw materials are loaded into the processing chamber, and after the first flange 3 and the second flange 4 are installed, the master control device controls the operation of the rotatable device 7 and the ultrasonic device 1, and controls the deionized water to enter the processing chamber for 3 cycles of water washing-pumping treatment until the water washing is thorough.

[0028] After the last pumping of S2 is completed, the master control device controls the reagent to enter the processing chamber for neutralization, and finally pumps out water, turns off the ultrasonic device 1, and starts the heating device 2 for drying.

[0029] S3 removes the first flange 3 and the second flange 4, using Figure 1 The piston pusher shown pushes the dried material out and sends it to the screener 11 for screening. The piston pusher can quickly and cleanly scrape out the material sticking to the wall, thereby reducing material loss.

[0030] S4 The first conveyor belt a sends the screened material to the flotation machine 12 for flotation. S5 The second conveyor belt b conveys the flotation material after flotation to the ball mill 13, S6 The third conveyor belt c carries the ball mill material to the processing chamber, loads the material and starts the heating device 2 to calcine at 170°C.

Claims

1. A method for pretreating phosphogypsum for producing gypsum board, characterized in that: The method comprises adopting the following production line: The invention comprises a processing chamber with an exhaust valve arranged on a rotatable device, a screener, a first conveyor belt, a flotation machine, a second conveyor belt, a ball mill, and a third conveyor belt, wherein the first conveyor belt conveys the phosphogypsum after screening to the flotation machine, the second conveyor belt conveys the phosphogypsum after flotation to the ball mill, and the third conveyor belt leads to the processing chamber for further calcination, wherein: The first flange and the second flange are respectively arranged at both ends of the processing chamber, the first flange has a through hole for deionized water and reagents to be introduced, and the second flange is connected to the first pumping device through a pipeline. Ultrasonic devices and heating devices are arranged on both sides of the length direction of the processing chamber to respectively adhere to the surface of the processing chamber to transmit ultrasonic waves and heat to the inside of the processing chamber, which are respectively used for vibration enhancement treatment effects in water washing and neutralization treatment, and calcination. The rotatable device, the screener, the flotation machine, the ball mill, the first pumping device, the ultrasonic device and the heating device are connected to the master control device, and are used to use the pre-trained large model to perform real-time pre-treatment process control according to the transmitted operating parameters; specifically including: S1 The raw materials are loaded into the processing chamber. After the first flange and the second flange are installed, the master control device controls the operation of the rotatable device and the ultrasonic device, and controls the deionized water to enter the processing chamber for circulating water washing-pumping treatment. S2 The last pumping is completed, the master control device controls the reagent to enter the treatment chamber for neutralization, and finally pumps water, turns off the ultrasonic device, and starts the heating device for drying; S3 removes the first flange and the second flange, and sends the dried material into the sifter for sieving. S4 first conveyor belt sends the screened materials to the flotation machine for flotation. S5 The second conveyor belt conveys the flotation material after flotation into the ball mill for ball milling. S6 The third conveyor carries the ball mill material to the processing chamber, loads the material and starts the heating device for calcination.

2. The method according to claim 1, characterized in that The processing chamber is a tubular double-layer casing with stainless steel outside and corundum inside. The rotatable device includes a base for supporting the middle part of the processing chamber. The base has a shaft through which a driven gear is passed. The driven gear meshes with the driving gear at the output end of the motor. The motor is connected to the master control device.

3. The method according to claim 2, characterized in that The exhaust valve is connected to an air pressure measuring device of the master control device.

4. The method according to claim 3, characterized in that Deionized water and reagents are contained in supply tanks controlled by the master control device.

5. The method according to any one of claims 1 to 4, characterized in that There are multiple ultrasonic devices and heating devices, each connected by a connecting rod, so that a mobile vehicle can be used to fix and support the connecting rod to perform the operations of close contact and removal. The connecting rod has a universal joint and rotates with the rotatable device.

6. The method according to claim 5, characterized in that The screener includes a shell, and a plurality of shaking tables arranged vertically in the shell, each layer of shaking tables is provided with sorting membranes with mesh sizes decreasing from top to bottom, and the first conveyor belt is located under the bottom layer of shaking tables; the flotation machine includes a cavity, a motor with a stirring paddle, and a second pumping device, the height of the second pumping device is preset, and after the preset mixture is mixed, the pumping port can be located at the bottom of the surface floating layer, wherein a feeding port is provided on the cavity.

7. The method according to claim 6, characterized in that The number of cycles of the circulating water washing-pumping treatment is 2-5 times.

8. The method according to claim 7, characterized in that When the parameters deviate from the preset values, the master control device controls to stop the running devices such as the rotatable device, the screener, the flotation machine, the ball mill, the first pumping device, the ultrasonic device and the heating device for maintenance.

9. The method according to claim 8, characterized in that The dried material is sent to a sifter for sieving through a piston pusher; the calcination temperature is 120-200°C.

10. The method according to any one of claims 6 to 9, characterized in that: The method of using a pre-trained large model to perform real-time pre-processing process control according to the transmitted operating parameters includes: Q1 inputs historical parameters into the big model to make real-time judgments on whether there are abnormalities at each moment in history, as well as the parameters and process strategies of each device at the next moment; Q2 uses abnormal and normal data judgment training to enable the large model to predict and output the normal range of each device parameter at each moment, so as to monitor the comparison abnormality between the predicted data and the actual transmitted parameters; Q3 inputs the transmitted operating parameters into the pre-trained large model to predict in real time whether the current parameters are normal, as well as the parameters and process strategies of each device at the next moment.

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