Integrated device for preparing calcium sulfate whiskers from ardealite

Abstract

The utility model discloses an integrated device for preparing calcium sulfate whiskers from ardealite. The integrated device comprises a reaction chamber, a filter chamber, a filtrate tank, a vacuum pump and a control device, a first water inlet, a temperature sensor and a stirring rotor are arranged in the reaction chamber, a feeding hole is formed in the top of the reaction chamber, a constant-temperature heating plate is arranged on the inner wall of the reaction chamber, a bottom plate of the reaction chamber is a rotatable bottom plate, and a constant-temperature heating plate is arranged on the surface; a second water inlet and a liquid level sensor are arranged in the filter chamber, and a drawable filter screen is arranged at the bottom of the filter chamber and located between the filter chamber and the filtrate tank; an extraction opening is formed inside the filtrate tank, and a water outlet is formed outside the filtrate tank; the vacuum pump is connected with the upper part of the filtrate tank; the device is used for preparing calcium sulfate whiskers from phosphogypsum, can integrally complete the reaction process and the filtering process of preparing the calcium sulfate whiskers from the phosphogypsum, and supports simultaneous operation, so that the preparation efficiency of preparing the calcium sulfate whiskers from the phosphogypsum is improved, and the material loss in the preparation process is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of preparing calcium sulfate whiskers from phosphogypsum, and specifically relates to a device for preparing calcium sulfate whiskers from integrated phosphogypsum. Background Art

[0002] Phosphogypsum is an industrial solid waste discharged during the wet production of phosphoric acid. It has the largest discharge volume among industrial by-product gypsums and is a renewable gypsum resource. The comprehensive utilization of phosphogypsum resources has important resource and environmental significance.

[0003] In order to improve the comprehensive utilization rate of phosphogypsum resources, calcium sulfate whiskers prepared from phosphogypsum have many advantages such as high strength, good toughness, high temperature resistance, chemical corrosion resistance, low cost, non-toxicity, easy surface treatment, etc., which integrate the advantages of reinforcing fibers and ultrafine inorganic fillers. They can be used as medium-strength reinforcing agents in polymer materials and are widely used in rubber, plastics, paint and papermaking industries, so they have good application prospects. However, the current process of preparing calcium sulfate whiskers from phosphogypsum has problems such as complex operation, low efficiency, and easy material loss.

[0004] Therefore, it is necessary to design an integrated device for preparing calcium sulfate whiskers from phosphogypsum to solve such problems. Utility Model Content

[0005] In order to solve the above problems, the utility model discloses an integrated device for preparing calcium sulfate whiskers from phosphogypsum, which can not only integrate the reaction process and filtration process of preparing calcium sulfate whiskers from phosphogypsum to simplify the operation steps; but also can run simultaneously to improve the preparation efficiency; and also reduces the loss of materials in the preparation process.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A device for preparing calcium sulfate whiskers from integrated phosphogypsum comprises a reaction chamber, a filter chamber, a filtrate tank, a vacuum pump and a control device; a first water inlet, a temperature sensor and a stirring rotor are provided in the reaction chamber, a feed inlet, a modifier filling port and a solution feed pipe are provided on the top of the reaction chamber, a constant temperature heating plate is provided on the inner wall of the reaction chamber, the bottom plate of the reaction chamber is a rotatable bottom plate, which is fixed between the reaction chamber and the filter chamber by a rotating shaft, and a constant temperature heating plate is provided on the surface; a second water inlet and a liquid level sensor are provided in the filter chamber, a retractable filter screen is provided at the bottom of the filter chamber, which is located between the filter chamber and the filtrate tank; an air suction port is provided inside the filtrate tank and a drain port is provided outside the filtrate tank; the vacuum pump is provided with a vacuum pressure sensor, and the vacuum pump is connected to the upper part of the filtrate tank through a vacuum pump pipe; the control device comprises temperature setting, speed setting and reaction time setting.

[0008] Furthermore, the inner wall and the bottom plate of the reaction chamber are both provided with a constant temperature heating plate to ensure that the reaction chamber heats up quickly and is heated evenly.

[0009] Furthermore, the reaction chamber bottom plate is a rotatable bottom plate, which is fixed between the reaction chamber and the filtration chamber by a rotating shaft. When the solution reaction is completed, the bottom plate will rotate to allow all the solution to flow into the filtration chamber for the next filtration operation. When the bottom plate returns to its position, the reaction chamber can proceed to the next round of preparation and operate simultaneously with the filtration chamber to improve preparation efficiency.

[0010] Furthermore, a first water inlet is provided inside the reaction chamber, which can clean the reaction chamber and ensure that the reaction products flow completely into the filter chamber.

[0011] Furthermore, the filtration chamber is located below the reaction chamber, and the filtration chamber and the reaction chamber are connected or separated by a rotatable bottom plate, thereby reducing material loss during the preparation process.

[0012] Furthermore, the bottom of the filter chamber is a removable filter screen, which is located between the filter chamber and the filtrate tank, so that the filtration product can be easily taken out, and the cleaning and replacement of the filter screen are also easier.

[0013] Furthermore, a second water inlet and a liquid level sensor are provided inside the filter chamber, so that the filtered product can be washed and the filter chamber can be cleaned.

[0014] Furthermore, an air suction port is provided on the upper portion of the filtrate tank, which is connected to a vacuum pump through a vacuum pump pipe, so that a suction filtration operation can be performed to speed up the filtration speed.

[0015] The beneficial effects of the utility model are:

[0016] The utility model discloses an integrated device for preparing calcium sulfate whiskers from phosphogypsum, which integrates a reaction chamber, a filter chamber and a filtrate tank into one body, thereby simplifying the preparation operation; the reaction chamber and the filter chamber are connected or separated by a rotatable bottom plate, supporting simultaneous operation, improving the preparation efficiency, and reducing material loss in the preparation process; the bottom of the filter chamber is a pull-out filter screen, which is convenient for removing the filtered product and cleaning and replacing the filter screen; the filtrate tank is externally connected to a vacuum pump to increase the filtration speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an integrated device for preparing calcium sulfate whiskers from phosphogypsum according to the utility model;

[0018] Figure 2 This is a schematic diagram of the operation of the reaction chamber of an integrated phosphogypsum preparation calcium sulfate whisker device of the utility model;

[0019] Figure 3This is a schematic diagram of the utility model of an integrated phosphogypsum preparation calcium sulfate whisker device after the rotatable bottom plate rotates;

[0020] Figure 4 This is a schematic diagram of the simultaneous operation of the reaction chamber and the filter chamber of an integrated phosphogypsum preparation calcium sulfate whisker device of the utility model;

[0021] Figure 5 This is a top view of an integrated phosphogypsum preparation calcium sulfate whisker device of the utility model;

[0022] Figure 6 This is a schematic diagram of the rotatable bottom plate of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the pull-out filter screen of the utility model.

[0024] Description of the accompanying drawings:

[0025] 1. Reaction chamber; 1-1. Feed inlet; 1-2. Modifier filling port; 1-3. Solution feed pipe; 1-4. Constant temperature heating plate; 1-5. Temperature sensor; 1-6. First water inlet; 1-7. Stirring rotor; 1-8. Rotatable bottom plate; 1-9. Rotating shaft; 2. Control device; 3. Filter chamber; 3-1. Second water inlet; 3-2. Liquid level sensor; 3-3. Retractable filter screen; 4. Filtrate tank; 4-1. Vacuum port; 4-2. Drain port; 5. Vacuum pump; 5-1. Vacuum pump pipe; 5-2. Vacuum pressure sensor. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention. Example

[0027] like Figure 1 As shown, the utility model provides an integrated device for preparing calcium sulfate whiskers from phosphogypsum, including a reaction chamber 1, a filter chamber 3, a filtrate tank 4, a vacuum pump 5 and a control device 2.

[0028] like Figure 2 As shown, the prepared phosphogypsum and dilute hydrochloric acid solution are added in a ratio of 1:10 through the feed port 1-1 and the solution feed pipe 1-3 at the top of the reaction chamber 1, and the prepared modifiers sodium oleate and sodium stearate are added through the modifier filling port 1-2 at the top of the reaction chamber 1. The reaction temperature is set to 140°C, the speed is set to 600r / min, and the reaction time is set to 60min through the control device 2. At this time, the constant temperature heating plate 1-4 on the inner wall of the reaction chamber 1 begins to heat up, and the stirring rotor 1-7 inside the reaction chamber 1 begins to stir the reaction solution; during the reaction, the temperature is adjusted by the temperature sensor 1-5 inside the reaction chamber 1 to ensure constant temperature.

[0029] like Figure 3 As shown, after the reaction is completed, the stirring rotor 1-7 in the reaction chamber 1 stops running, the rotating shaft 1-9 of the rotatable bottom plate 1-8 starts to rotate to an inclined angle, and the reaction solution flows into the filter chamber 3. Then, the rotatable bottom plate 1-8 rotates back to its original position through the rotating shaft 1-9. Figure 2 State (a sealing ring is provided on the periphery of the rotatable bottom plate 1-8, which fits with the inner wall of the reaction chamber 1 in a horizontal state without leakage).

[0030] After the solution enters the filter chamber 3, the vacuum pump 5 connected to the upper air suction port 4-1 of the filtrate chamber 4 through the vacuum pump pipe 5-1 starts to work, extracting air to speed up the filtration speed. When the reaction liquid is extracted, the vacuum pump 5 stops running. At this time, the second water inlet 3-1 on the inner side of the filter chamber 3 injects 80°C clean water along the inner wall as a washing liquid. When the liquid level sensor 3-2 detects that the washing liquid submerges the reaction product, the second water inlet 3-1 stops adding water, and the vacuum pump 5 is started to filter and wash the product. After washing 3 times, the filtrate chamber 3 and the vacuum pump 5 stop working. At this time, the pullable filter screen 3-3 at the bottom of the filter chamber 3 is pulled out to obtain the calcium sulfate whisker product, and the filtrate can be discharged from the drain port 4-2 at the bottom of the filtrate tank.

[0031] After pulling out the filter 3-3 and returning it to its original position, you can wait for the next round of filtering.

[0032] At this time, the reaction chamber 1 is preparing a new round of products, and the filter chamber 3 is filtering the previous round of products. The reaction chamber 1 and the filter chamber 3 are running simultaneously, which improves the efficiency of preparing whiskers from phosphogypsum.

[0033] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. An integrated device for preparing calcium sulfate whiskers from phosphogypsum, characterized in that: The invention comprises a reaction chamber (1), a filtration chamber (3), a filtrate tank (4), a vacuum pump (5) and a control device (2); the top of the reaction chamber (1) is provided with a feed port (1-1), a modifier filling port (1-2) and a solution feed pipe (1-3); the inside of the reaction chamber (1) is provided with a first water inlet (1-6), a temperature sensor (1-5) and a stirring rotor (1-7); the inner wall of the reaction chamber (1) is provided with a constant temperature heating plate (1-4); the bottom plate of the reaction chamber (1) is a rotatable bottom plate (1-8) fixed to the reaction chamber (1) and the bottom plate via a rotating shaft (1-9). A constant temperature heating plate (1-4) is provided on the surface of the filter chamber (3); a second water inlet (3-1) and a liquid level sensor (3-2) are provided in the filter chamber (3); a removable filter screen (3-3) is provided at the bottom of the filter chamber (3); the filtrate tank (4) is provided with an air suction port (4-1) and a water discharge port (4-2); the vacuum pump (5) is provided with a vacuum pressure sensor (5-2), and the vacuum pump (5) is connected to the filtrate tank air suction port (4-1) via a vacuum pump pipe (5-1); and the control device (2) includes temperature settings, speed settings, and response time settings.

2. The device for preparing calcium sulfate whiskers from phosphogypsum as claimed in claim 1, characterized in that: The inner wall and bottom plate of the reaction chamber (1) are both provided with constant temperature heating plates (1-4).

3. The device for preparing calcium sulfate whiskers from phosphogypsum as claimed in claim 1, characterized in that: The filter chamber (3) is located below the reaction chamber (1) and is connected or separated by a rotatable bottom plate (1-8). The bottom of the filter chamber (3) is a removable filter screen (3-3) located between the filter chamber (3) and the filtrate tank (4).

4. The device for preparing calcium sulfate whiskers from phosphogypsum as claimed in claim 1, characterized in that: The filtrate tank (4) is located below the filter chamber (3). The upper portion of the filtrate tank (4) is provided with an air extraction port (4-1) for connecting to a vacuum pump pipe (5-1), and the bottom portion is provided with a drainage port (4-2).

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