Hot-pressing leaching device for purifying quartz sand

Abstract

The utility model discloses a hot-pressing leaching device for purifying quartz sand. Comprising a heating sleeve arranged above a base, a pair of roller carriers arranged at the two ends of the heating sleeve, a hot-pressing leaching tank rotationally arranged in the heating sleeve, a tank rotating and swinging mechanism arranged on the base, and a fixed turning plate fixedly arranged in the hot-pressing leaching tank, wherein the two ends of the hot-pressing leaching tank are supported on the pair of roller carriers; the quartz mortar feeding port and the quartz mortar discharging port are formed in the two ends of the hot-pressing leaching tank body respectively, and the pressure pump is connected to the quartz mortar feeding port of the hot-pressing leaching tank body through a flexible high-pressure hose and used for inputting quartz mortar into the hot-pressing leaching tank body in a pressurized mode. And the slurry discharge valve is connected to the quartz mortar discharge hole of the hot-pressing leaching tank body through a flexible high-pressure hose and is used for discharging the quartz mortar from the inside of the hot-pressing leaching tank body. The reliability and the production efficiency of the quartz sand purification hot-pressing leaching device can be improved, and the quartz sand purification hot-pressing leaching device has a good energy-saving effect.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand purification technology, specifically to a hot-press leaching device for quartz sand purification. Background Technology

[0002] Quartz sand possesses unique physical and chemical properties, which play a crucial role in aviation, aerospace, electronics, machinery, and today's rapidly developing IT industry. In particular, its inherent molecular chain structure, crystal shape, and lattice variation patterns give it high temperature resistance, low coefficient of thermal expansion, high insulation, corrosion resistance, piezoelectric effect, resonance effect, and unique optical properties, making it increasingly important in many high-tech products.

[0003] The production process of quartz sand includes steps such as mineral processing, crushing, screening, washing, grinding, purification, and drying. To obtain high-purity quartz sand, purification is particularly important. Preparing an acidic slurry by placing the quartz sand in an acidic solution and then heating and pressurizing it accelerates the dissolution of impurities within the quartz sand particles, and this method has become a crucial technique for quartz sand purification.

[0004] The hot-press leaching equipment used for quartz sand purification is a pressure leaching kettle. A typical existing pressure leaching kettle is an independent kettle without a heater. During use, the quartz sand slurry is loaded into the independent kettle and pressurized by a pressure device on top, then the entire unit is placed in a heating furnace for hot-press leaching. This equipment has poor continuous productivity and low production efficiency. Another typical pressure leaching kettle is a horizontal pressure leaching kettle, equipped with multiple motor-driven stirring devices. Its drawbacks are that the stirring devices have a complex structure, low reliability, and high cost. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a hot-press leaching device for quartz sand purification, aiming to overcome the shortcomings of existing technologies, improve the operational reliability of the hot-press leaching device for quartz sand purification, increase the efficiency of hot-press leaching for quartz sand purification, and realize the utilization of waste heat from the quartz sand slurry. The specific technical solution is as follows:

[0006] A hot-press leaching device for purifying quartz sand includes a base, a heating sleeve fixedly mounted on the base and located above the base, a pair of roller frames fixedly mounted on the base and positioned at both ends of the heating sleeve, a hot-press leaching tank rotatably mounted inside the heating sleeve and supported at both ends by the pair of roller frames, a tank rotation and swing mechanism mounted on the base for driving the hot-press leaching tank to rotate and swing around the central axis of the heating sleeve at a certain angle, a fixed tilting plate fixedly mounted inside the hot-press leaching tank, quartz sand slurry inlet and quartz sand slurry outlet respectively mounted at both ends of the hot-press leaching tank, a pressure pump connected to the quartz sand slurry inlet of the hot-press leaching tank via a flexible high-pressure hose for pressurizing and inputting quartz sand slurry into the hot-press leaching tank, and a slurry discharge valve connected to the quartz sand slurry outlet of the hot-press leaching tank via a flexible high-pressure hose for discharging quartz sand slurry from the inside of the hot-press leaching tank.

[0007] Preferably, the fixed material turning plates are arranged at intervals along the inner wall of the hot-press leaching tank.

[0008] Preferably, the fixed turning plate is arranged parallel to or at a certain angle to the rotational swing axis of the hot-press leaching tank.

[0009] Preferably, the slurry discharge valve is a flow regulating valve used to control and adjust the discharge flow rate of quartz sand slurry.

[0010] In this invention, the heating sleeve includes a sleeve housing and a heater disposed inside the sleeve housing for heating the hot-press leaching tank.

[0011] Preferably, a heat insulation layer is provided on the outer circumference of the sleeve shell.

[0012] Preferably, the heater is an infrared radiation heater that does not contact the outer surface of the hot-pressing leaching tank.

[0013] Preferably, the infrared radiation heater is a plurality of infrared ceramic heating plates arranged circumferentially within the sleeve housing.

[0014] Preferably, the infrared ceramic heating plate is in the shape of an arc-shaped tile, and the infrared ceramic heating plates are spliced ​​together to form a complete circle.

[0015] In this utility model, the hot-press leaching tank is provided with a rotating central shaft at both ends, and the hot-press leaching tank is rotatably supported on a pair of roller frames through the rotating central shaft; the tank rotation swing mechanism includes a rotary motor provided on the base and a transmission device provided between the motor shaft of the rotary motor and the rotating central shaft.

[0016] Preferably, the transmission device is a synchronous belt transmission device.

[0017] In this invention, the quartz sand slurry inlet and the quartz sand slurry outlet are respectively located on the rotation center shafts at both ends of the hot-press leaching tank.

[0018] As a further improvement, the hot-press leaching device for quartz sand purification of this utility model is further provided with a slurry feeding preheating and discharge cooling composite device. The slurry feeding preheating and discharge cooling composite device includes a feed-side slurry heat exchange and pressure-resistant box located at the end of the hot-press leaching tank near the quartz sand slurry inlet, a serpentine oil-cooled heat exchange tube located within the feed-side slurry heat exchange and pressure-resistant box, a discharge-side slurry heat exchange and pressure-resistant box located at the end of the hot-press leaching tank near the quartz sand slurry outlet, and a serpentine oil-cooled heat exchange tube located within the discharge-side slurry heat exchange and pressure-resistant box; the outlet of the pressure pump is connected to... The inlet of the feed-side slurry heat exchanger and pressure-resistant tank is connected to the outlet of the feed-side slurry heat exchanger and pressure-resistant tank via the flexible high-pressure hose. The outlet of the hot-press leaching tank is connected to the outlet-side slurry heat exchanger and pressure-resistant tank via the flexible high-pressure hose. The outlet of the outlet-side slurry heat exchanger and pressure-resistant tank is connected to the slurry discharge valve. An oil-cooled heat exchange circulation pipeline is connected between the serpentine oil-cooled heat exchanger tubes of the feed-side slurry heat exchanger and pressure-resistant tank and the serpentine oil-cooled heat exchanger tubes of the outlet-side slurry heat exchanger and pressure-resistant tank. A circulating cooling pump is installed on the oil-cooled heat exchange circulation pipeline.

[0019] Preferably, the pressurizing pump, the feed-side slurry heat exchange pressure tank, the heating sleeve, and the discharge-side slurry heat exchange pressure tank are respectively fixed on the base by brackets.

[0020] Preferably, the two sides of the discharge-side slurry heat exchange pressure tank are dynamically sealed to the outer circle of the rotating center shaft through sealing elements.

[0021] To prevent axial displacement of the hot-press leaching tank, a limiting flange is provided at the end of the rotating central shaft, and a limiting seat is provided on the base. The limiting seat is provided with a pair of axial limiting rollers that roll in contact with the two end faces of the limiting flange when the rotating central shaft drives the limiting flange to rotate.

[0022] As a further improvement of this utility model, a tank swing safety limiter is also provided between the base and the hot-press leaching tank body to limit the rotational swing angle of the hot-press leaching tank body. The tank swing safety limiter includes a limiting buffer block provided on the side of the roller frame and a limiting stop post provided at one end of the hot-press leaching tank body. When the hot-press leaching tank body rotates and swings to the limit position, the limiting stop post contacts the limiting buffer block.

[0023] Preferably, the outer surface of the limiting buffer block is provided with an elastic rubber layer.

[0024] In this invention, the outer surfaces of both ends of the hot-press leaching tank are provided with end insulation layers.

[0025] In this invention, the inner wall of the hot-press leaching tank is provided with an acid-resistant and corrosion-resistant layer.

[0026] In this invention, the hot-press leaching tank is equipped with a temperature sensor and a pressure sensor for measuring the temperature and pressure of the quartz sand slurry inside the hot-press leaching tank.

[0027] The beneficial effects of this utility model are:

[0028] First, the present invention provides a hot-press leaching device for purifying quartz sand. The hot-press leaching tank adopts a horizontal rotating and swinging structure. When the hot-press leaching tank rotates and swings, the fixed turning plate inside can turn and mix the quartz sand slurry. Compared with conventional hot-press leaching devices, the present invention does not have a dedicated motor-driven insertion-type rotating stirring device. Therefore, it has good maintainability, high reliability, simple structure, and low cost.

[0029] Secondly, the hot-press leaching device for purifying quartz sand according to this utility model sets a heating sleeve around the hot-press leaching tank and, combined with the pressurization effect of the pressure pump on the quartz sand slurry, the slurry can be continuously pressed into the hot-press leaching tank and continuously discharged through the slurry discharge valve, thus realizing continuous hot-press leaching treatment of quartz sand slurry with a high degree of automation.

[0030] Third, the hot-press leaching device for quartz sand purification of this utility model adopts a rotating and swinging configuration for the hot-press leaching tank, which allows the flexible high-pressure hose to be directly connected to the hot-press leaching tank without the need for a rotary joint, thereby improving the reliability of the device.

[0031] Fourth, the hot-press leaching device for quartz sand purification of this utility model is equipped with a composite device for slurry feeding preheating and discharge cooling. The original cold quartz sand slurry can be preheated by the heat of the quartz sand slurry discharged from the hot-press leaching tank before entering the hot-press leaching tank. This improves the efficiency of hot-press leaching treatment inside the hot-press leaching tank, saves energy by making full use of the discharge preheating of the quartz sand slurry, and cools down the discharged quartz sand slurry, which is beneficial to the subsequent processing of the quartz sand slurry after hot-press leaching and reduces the waiting time for subsequent cooling down, thereby further improving the production efficiency of quartz sand purification.

[0032] Fifth, the hot-press leaching device for quartz sand purification of this utility model has a hot-press leaching tank and a heating sleeve that can be separated, which greatly improves the convenience of maintenance of the hot-press leaching device. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a hot-press leaching device for purifying quartz sand according to the present invention.

[0034] In the diagram: 1. Base, 2. Heating sleeve, 3. Roller frame, 4. Hot press leaching tank, 5. Tank rotation and swing mechanism, 6. Fixed tipping plate, 7. Quartz sand slurry inlet, 8. Quartz sand slurry outlet, 9. Flexible high-pressure hose, 10. Pressure pump, 11. Slurry discharge valve, 12. Sleeve shell, 13. Heater, 14. Rotating central shaft, 15. Angle motor, 16. Transmission device, 17. Slurry heat exchange pressure tank on the inlet side, 18. Serpentine oil-cooled heat exchange tube, 19. Slurry heat exchange pressure tank on the outlet side, 20. Oil-cooled heat exchange circulation pipeline, 21. Circulating cooling pump, 22. Support, 23. Limiting seat, 24. Limiting flange, 25. Axial limiting roller, 26. Tank swing safety limiter, 27. Limiting buffer block, 28. Limiting stop, 29. Tank end insulation layer. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0036] like Figure 1 The illustration shows an embodiment of a hot-press leaching device for quartz sand purification according to this utility model. It includes a base 1, a heating sleeve 2 fixedly mounted on and above the base 1, a pair of roller frames 3 fixedly mounted on the base 1 and positioned at both ends of the heating sleeve 2, a hot-press leaching tank 4 rotatably mounted inside the heating sleeve 2 and supported at both ends by the pair of roller frames 3, and a tank rotation and swing mechanism mounted on the base 1 for driving the hot-press leaching tank 4 to rotate and swing around the central axis of the heating sleeve 2 at a certain angle. 5. A fixed tilting plate 6 fixedly installed inside the hot-press leaching tank 4; quartz sand slurry inlet 7 and quartz sand slurry outlet 8 respectively installed at both ends of the hot-press leaching tank 4; a pressure pump 10 connected to the quartz sand slurry inlet 7 of the hot-press leaching tank 4 via a flexible high-pressure hose 9 for pressurizing and inputting quartz sand slurry into the hot-press leaching tank 4; and a slurry discharge valve 11 connected to the quartz sand slurry outlet 8 of the hot-press leaching tank 4 via a flexible high-pressure hose 9 for discharging quartz sand slurry from the inside of the hot-press leaching tank 4.

[0037] Preferably, the fixed material turning plates 6 are arranged at intervals along the inner wall of the hot-press leaching tank 4.

[0038] Preferably, the fixed tilting plate 6 is arranged parallel to or at a certain angle relative to the rotation axis of the hot-press leaching tank 4.

[0039] Preferably, the slurry discharge valve 11 is a flow regulating valve used to control and adjust the discharge flow rate of quartz sand slurry.

[0040] In this embodiment, the heating sleeve 2 includes a sleeve housing 12 and a heater 13 disposed inside the sleeve housing 12 for heating the hot-press leaching tank 4.

[0041] Preferably, a heat insulation layer is provided on the outer circumference of the sleeve shell 2.

[0042] Preferably, the heater 13 is an infrared radiation heater that does not contact the outer surface of the hot-press leaching tank 4.

[0043] Preferably, the infrared radiation heater is a plurality of infrared ceramic heating plates arranged circumferentially within the sleeve housing 12.

[0044] Preferably, the infrared ceramic heating plate is in the shape of an arc-shaped tile, and the infrared ceramic heating plates are spliced ​​together to form a complete circle.

[0045] In this embodiment, the hot-press leaching tank 4 is provided with a rotation center shaft 14 at both ends, and the hot-press leaching tank 4 is rotatably supported on the pair of roller frames 3 through the rotation center shaft 14; the tank rotation swing mechanism 5 includes a corner motor 15 provided on the base 1 and a transmission device 16 provided between the motor shaft of the corner motor 15 and the rotation center shaft 14.

[0046] Preferably, the transmission device 16 is a synchronous belt transmission device.

[0047] In this embodiment, the quartz sand slurry inlet 7 and the quartz sand slurry outlet 8 are respectively located on the rotation center shaft 14 at both ends of the hot-press leaching tank 4.

[0048] As a further improvement, the hot-press leaching apparatus for quartz sand purification in this embodiment is further provided with a slurry feed preheating and discharge cooling composite device. The slurry feed preheating and discharge cooling composite device includes a feed-side slurry heat exchange and pressure-resistant box 17 located at one end of the hot-press leaching tank 4 near the quartz sand slurry inlet 7, a serpentine oil-cooled heat exchange tube 18 located within the feed-side slurry heat exchange and pressure-resistant box 17, a discharge-side slurry heat exchange and pressure-resistant box 19 located at one end of the hot-press leaching tank 4 near the quartz sand slurry outlet 8, and a serpentine oil-cooled heat exchange tube 18 located within the discharge-side slurry heat exchange and pressure-resistant box 19. The outlet of the pressure pump 10 is connected to the feed-side... The inlet of the slurry heat exchange pressure tank 17 and the outlet of the slurry heat exchange pressure tank 17 on the feed side are connected to the quartz sand slurry inlet 7 on the hot-press leaching tank 4 via the flexible high-pressure hose 9; the quartz sand slurry outlet 8 on the hot-press leaching tank 4 is connected to the slurry heat exchange pressure tank 19 on the discharge side via the flexible high-pressure hose 9; the outlet of the slurry heat exchange pressure tank 19 on the discharge side is connected to the slurry discharge valve 11; an oil-cooled heat exchange circulation pipeline 20 is connected between the serpentine oil-cooled heat exchange tube 18 of the slurry heat exchange pressure tank 17 on the feed side and the serpentine oil-cooled heat exchange tube 18 of the slurry heat exchange pressure tank 19 on the discharge side, and a circulating cooling pump 21 is installed on the oil-cooled heat exchange circulation pipeline 20.

[0049] Preferably, the pressurizing pump 10, the feed-side slurry heat exchange pressure tank 17, the heating sleeve 2, and the discharge-side slurry heat exchange pressure tank 19 are respectively fixed on the base 1 by the bracket 22.

[0050] Preferably, the two sides of the discharge-side slurry heat exchange pressure-resistant box 19 are dynamically sealed to the outer circle of the rotating central shaft 14 through sealing elements.

[0051] To prevent axial displacement of the hot-press leaching tank 4, a limiting flange 24 is provided at the end of the rotating central shaft 14, and a limiting seat 23 is provided on the base 1. The limiting seat 23 is provided with a pair of axial limiting rollers 25 that roll in contact with the two end faces of the limiting flange 24 respectively when the rotating central shaft 14 drives the limiting flange 24 to rotate.

[0052] As a further improvement of this embodiment, a tank swing safety limiter 26 for limiting the rotational swing angle of the hot-press leaching tank 4 is also provided between the base 1 and the hot-press leaching tank 4. The tank swing safety limiter 26 includes a limiting buffer block 27 provided on the side of the roller frame 3 and a limiting stop post 28 provided at one end of the hot-press leaching tank 4. When the hot-press leaching tank 4 rotates and swings to the limit position, the limiting stop post 28 contacts the limiting buffer block 27.

[0053] Preferably, the outer surface of the limiting buffer block 27 is provided with an elastic rubber layer.

[0054] In this embodiment, the outer surfaces of both ends of the hot-press leaching tank 4 are provided with tank end insulation layers 29.

[0055] In this embodiment, the inner wall of the hot-press leaching tank 4 is provided with an acid-resistant and corrosion-resistant layer.

[0056] In this embodiment, the hot-press leaching tank 4 is equipped with a temperature sensor and a pressure sensor for measuring the temperature and pressure of the quartz sand slurry inside the hot-press leaching tank 4.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hot-press leaching apparatus for purifying quartz sand, characterized in that, The system includes a base, a heating sleeve fixedly mounted on and above the base, a pair of roller frames fixedly mounted on the base and positioned at both ends of the heating sleeve, a hot-press leaching tank rotatably mounted inside the heating sleeve and supported at both ends by the pair of roller frames, a tank rotation and swing mechanism mounted on the base for driving the hot-press leaching tank to rotate and swing around the central axis of the heating sleeve at a certain angle, a fixed material tilting plate fixedly mounted inside the hot-press leaching tank, a quartz sand slurry inlet and a quartz sand slurry outlet respectively mounted at both ends of the hot-press leaching tank, a pressure pump connected to the quartz sand slurry inlet of the hot-press leaching tank via a flexible high-pressure hose for pressurizing and inputting quartz sand slurry into the hot-press leaching tank, and a slurry discharge valve connected to the quartz sand slurry outlet of the hot-press leaching tank via a flexible high-pressure hose for discharging quartz sand slurry from the inside of the hot-press leaching tank.

2. The hot-press leaching apparatus for purifying quartz sand according to claim 1, characterized in that, The heating sleeve includes a sleeve housing and a heater disposed inside the sleeve housing for heating the hot-press leaching tank.

3. The hot-press leaching apparatus for purifying quartz sand according to claim 2, characterized in that, The heater is an infrared radiation heater that does not contact the outer surface of the hot-pressing leaching tank.

4. The hot-press leaching apparatus for purifying quartz sand according to claim 1, characterized in that, The hot-press leaching tank is provided with a rotating central shaft at each end, and the hot-press leaching tank is rotatably supported on a pair of roller frames through the rotating central shaft; the tank rotation swing mechanism includes a rotary motor provided on the base and a transmission device provided between the motor shaft of the rotary motor and the rotating central shaft.

5. A hot-press leaching apparatus for purifying quartz sand according to claim 4, characterized in that, The quartz sand slurry inlet and the quartz sand slurry outlet are respectively located on the rotation center shaft at both ends of the hot-press leaching tank.

6. A hot-press leaching apparatus for purifying quartz sand according to claim 5, characterized in that, A combined device for preheating the slurry feed and cooling the slurry discharge is also provided. This device includes a slurry heat exchange and pressure-resistant box located at the feed end of the hot-press leaching tank near the quartz sand slurry feed inlet, a serpentine oil-cooled heat exchange tube located within the feed-side slurry heat exchange and pressure-resistant box, a slurry heat exchange and pressure-resistant box located at the discharge end of the hot-press leaching tank near the quartz sand slurry discharge outlet, and a serpentine oil-cooled heat exchange tube located within the discharge-side slurry heat exchange and pressure-resistant box. The outlet of the pressurizing pump is connected to the inlet of the feed-side slurry heat exchange and pressure-resistant box. The outlet of the feed-side slurry heat exchanger and pressure-resistant tank is connected to the quartz sand slurry inlet on the hot-press leaching tank via the flexible high-pressure hose; the outlet of the hot-press leaching tank is connected to the discharge-side slurry heat exchanger and pressure-resistant tank via the flexible high-pressure hose, and the outlet of the discharge-side slurry heat exchanger and pressure-resistant tank is connected to the slurry discharge valve; an oil-cooled heat exchange circulation pipeline is connected between the serpentine oil-cooled heat exchanger tube of the feed-side slurry heat exchanger and pressure-resistant tank and the serpentine oil-cooled heat exchanger tube of the discharge-side slurry heat exchanger and pressure-resistant tank, and a circulating cooling pump is installed on the oil-cooled heat exchange circulation pipeline.

7. The hot-press leaching apparatus for purifying quartz sand according to claim 6, characterized in that, The pressurization pump, the feed-side slurry heat exchange pressure tank, the heating sleeve, and the discharge-side slurry heat exchange pressure tank are all fixed on the base by brackets.

8. The hot-press leaching apparatus for purifying quartz sand according to claim 7, characterized in that, The two sides of the discharge-side slurry heat exchange pressure tank are dynamically sealed to the outer circle of the rotating center shaft through sealing elements.

9. A hot-press leaching apparatus for purifying quartz sand according to claim 8, characterized in that, The end of the rotating central shaft is provided with a limiting flange, and the base is provided with a limiting seat. The limiting seat is provided with a pair of axial limiting rollers that roll in contact with the two end faces of the limiting flange when the rotating central shaft drives the limiting flange to rotate.

10. A hot-press leaching apparatus for purifying quartz sand according to claim 1, characterized in that, A tank swing safety limiter is also provided between the base and the hot-press leaching tank to limit the rotational swing angle of the hot-press leaching tank. The tank swing safety limiter includes a limiting buffer block provided on the side of the roller frame and a limiting stop post provided at one end of the hot-press leaching tank. When the hot-press leaching tank rotates to the limit position, the limiting stop post contacts the limiting buffer block.

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