Quartz sand calcination water quenching device

Abstract

The invention provides a quartz sand calcining and water quenching device which comprises a feeding device, a calcining device and a water quenching device which are sequentially arranged in the material advancing direction, and the feeding device can feed quartz sand into the calcining device and comprises a hopper and a vibrating feeder; the calcining equipment can perform high-temperature calcining on quartz sand, and comprises a quartz tube, a heating part, a heat preservation part and a quartz tube rotating part; the water quenching equipment can perform water quenching on calcined quartz sand and comprises a cold water tank, a circulating water tank and a cooling tower. The quartz sand calcining and water quenching device disclosed by the invention is low in energy consumption required by work and less in time consumption, does not need multiple persons to participate at the same time, and can save a large amount of manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the technical field of calcination and water quenching of quartz sand, and more specifically, to a device for calcination and water quenching of quartz sand. Background Art

[0002] High-purity quartz sand is quartz sand with a particle size of 60 - 200 mesh processed from high-purity quartz raw materials through crushing, screening, magnetic separation, flotation, and acid washing. During the purification process of quartz sand, in order to remove the inclusions and lattice impurities in the quartz sand, it is necessary to perform high-temperature calcination and water quenching on the quartz sand, commonly known as "exploding the material", and a calcination and water quenching device is required. There are two key points to achieve this goal: one is that the quartz sand reaches the required calcination temperature evenly during calcination; the other is that when the calcined quartz sand is water quenched, it should be as fast as possible to maintain the calcination temperature.

[0003] In the prior art, the device used for calcination and water quenching of quartz sand is a pit-type high-temperature electric furnace. The quartz crucible is used for loading materials, which is placed in the pit-type high-temperature electric furnace for calcination. The calcination temperature is 950 - 1100 °C, and after holding for 3 hours, it is quickly taken out of the furnace by a charging fork and poured into a prepared cold water tank for water quenching, and then filtered and reserved. This method has the following problems: one is that the loading capacity is limited by the size of the quartz crucible and the furnace chamber of the pit-type high-temperature electric furnace. After a batch of materials is calcined and water quenched, loading and calcination are carried out again, and the processing capacity is small, which is not suitable for batch production; the other is that when loading with a quartz crucible, the stacking thickness of the quartz sand is large. In order to ensure uniform calcination, it is necessary to hold for 3 hours or longer. Opening and closing the furnace door is required for both loading and unloading materials, and the electric furnace needs to be heated repeatedly. These factors result in high power consumption; thirdly, the calcination and water quenching process requires 3 - 4 people to cooperate in operation. Manual charging and pouring for water quenching mean that people have to contact the high temperature of 950 - 1100 °C. The time is difficult to control, which is time-consuming and laborious and there are also safety hazards, and the water quenching effect is not good.

[0004] The purpose of the present invention is to solve the disadvantages of intermittent loading, small processing capacity, high energy consumption, time-consuming and laborious and unsafe in the prior art, and to propose a device for calcination and water quenching of quartz sand. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the above-mentioned deficiencies existing in the prior art. For example, the purpose of the present invention is to provide a device for calcination and water quenching of quartz sand.

[0006] To achieve the above purpose, the present invention provides a device for calcination and water quenching of quartz sand, the device includes a feeding device, a calcination device, and a water quenching device arranged in sequence along the material traveling direction, wherein,

[0007] The feeding device can send quartz sand into the calcination device, and includes a hopper and a vibrating feeder;

[0008] The calcination device can perform high-temperature calcination on quartz sand, and includes a quartz tube, a heating component, a heat preservation component, and a quartz tube rotating component;

[0009] The water quenching equipment can quench the calcined quartz sand, and includes a cold water tank, a circulating water tank and a cooling tower.

[0010] Optionally, the vibrating feeder includes an electromagnetic vibrating feeder, and the electromagnetic vibrating feeder includes a feeding pipe and an electromagnetic vibrator; the hopper is made of PP material, the outlet of the hopper corresponds to the large mouth of the feeding pipe, the feeding pipe is made of quartz material, and is fixed to the electromagnetic vibrator with a stainless steel hoop and heat-resistant cotton.

[0011] Optionally, the quartz tube is the carrier for calcining quartz sand, with a total length of 5 - 8m; the quartz tube passes through the heating component to form an integral body, and the quartz tube is kept inclined so that the horizontal angle between the quartz tube and the horizontal line is 1 - 8°;

[0012] Optionally, the upper port of the quartz tube is internally sealed with a 1 - 10cm edge, the feeding pipe of the vibrating feeder is inserted 5 - 15cm along the central direction of the quartz tube, and the outer wall of the feeding pipe is kept 3 - 10cm away from the internal seal.

[0013] Optionally, an inner ring conical protrusion is made inside the part of the quartz tube passing through the heating component, the inner ring conical protrusion is 0.5 - 5cm high, and an inner inner ring conical protrusion is made every 5 - 20cm;

[0014] Optionally, the discharging end of the quartz tube is closed, and 4 - 10 sand outlets are opened on the quartz tube on both sides of the discharging end; a 7-shaped flow channel is made inside the quartz tube starting from leaving the heating component, the angle of the 7-shaped flow channel is 100 - 150°, and is connected to the sand outlet.

[0015] Optionally, the heating component uses silicon molybdenum rods and heat-insulating cotton to form a box around the quartz tube to ensure rapid and uniform heating of the quartz tube.

[0016] Optionally, the heat-insulating component includes high-temperature resistant heat-insulating cotton wrapped outside the quartz tube exposed at the discharging end, a heat-insulating chamber is provided at the discharging end, an air outlet is provided on the side of the heat-insulating chamber to connect to ventilation equipment, and the heat-insulating chamber can cover the sand discharging end without affecting observation and the movement of the cold water tank.

[0017] Optionally, the quartz tube rotating component includes a reduction motor and a rotating bearing placed at both ends of the quartz tube to drive the quartz tube to rotate.

[0018] Optionally, the cold water tank uses a partitioned PP barrel with a trolley, and a ton bag with an additional surrounding feeding port is laid on the inner side of the barrel wall.

[0019] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0020] 1 The quartz sand calcination and water quenching device of the present invention has the advantages of large processing capacity and batch production.

[0021] 2 The quartz sand calcination and water quenching device of the present invention requires low energy consumption and less time during operation, does not require multiple people to participate simultaneously, and can save a large amount of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Through the following description in conjunction with the drawings, the above and other objects and / or features of the present invention will become clearer, where:

[0023] Figure 1 shows a schematic structural diagram of the quartz sand calcination and water quenching device of the present invention.

[0024] Figure 2 shows a schematic structural diagram of the calcination part of the quartz sand calcination and water quenching device of the present invention.

[0025] Figure 3 shows a schematic internal structure diagram of the calcination quartz tube of the quartz sand calcination and water quenching device of the present invention.

[0026] Figure 4 shows a partial schematic structural diagram of the calcination quartz tube of the quartz sand calcination and water quenching device of the present invention.

[0027] Figure 5 shows a schematic structural diagram of the cold water tank of the quartz sand calcination and water quenching device of the present invention.

[0028] MAIN REFERENCE NUMERAL DESCRIPTION:

[0029] 1 - Feeding equipment; 2 - Calcination equipment; 3 - Water quenching equipment; 4 - Horizontal angle of the quartz tube; 5 - Hopper; 6 - Feeding pipe; 7 - Electromagnetic vibrator; 8 - Quartz tube; 9 - Heating component; 10 - Cold water tank; 11 - Circulation water tank; 12 - Cooling tower; 13 - Cold water tank water inlet; 14 - Cold water tank water outlet; 15 - Quartz tube feed end; 16 - Quartz tube discharge end; 17 - Rotating bearing; 18 - Reducing motor; 19 - Insulated house; 20 - Inner ring conical protrusion; 21 - 7-shaped chute; 22 - Quartz tube discharge port; 23 - Sand outlet; 24 - Cross-section of the inner ring conical protrusion; 25 - Quartz tube feed port; 26 - Cold water tank PP water filter plate; 27 - Ton bag for adding and discharging materials; 28 - Cold water tank water outlet pipe; 29 - Trolley. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In the following, a quartz sand calcination and water quenching device of the present invention will be described in detail in conjunction with exemplary embodiments.

[0031] Exemplary Embodiment 1

[0032] This exemplary embodiment provides a quartz sand calcination and water quenching device, asFigures 1 to 5 As shown, the device includes a feeding device 1, a calcining device 2, and a water quenching device 3 arranged in sequence along the material traveling direction. Among them,

[0033] The feeding device 1 can feed quartz sand into the calcining device and includes a hopper 5 and a vibrating feeder;

[0034] The calcining device 2 can conduct high-temperature calcination on quartz sand and includes a quartz tube 8, a heating component 9, a heat preservation component, and a quartz tube rotating component;

[0035] The water quenching device 3 can conduct water quenching on the calcined quartz sand and includes a cold water tank 10, a circulating water tank 11, and a cooling tower 12.

[0036] In this embodiment, the vibrating feeder includes an electromagnetic vibrating feeder, and the electromagnetic vibrating feeder includes a feeding pipe 6 and an electromagnetic vibrator 7; the hopper 5 is made of PP material, the outlet of the hopper 5 corresponds to the large mouth of the feeding pipe 6, the feeding pipe 6 is made of quartz material, and is fixed to the electromagnetic vibrator 7 with a stainless steel hoop padded with heat-resistant cotton to ensure that there is no metal contact with the quartz sand and avoid metal contamination.

[0037] In this embodiment, the quartz tube 8 is the carrier for quartz sand calcination, with a total length of 5 - 8m; the quartz tube 8 passes through the heating component 9 to form an integral body, and the quartz tube is kept inclined to ensure that the horizontal angle between the quartz tube and the horizontal line is 1 - 8°.

[0038] Among them, the quartz tube is kept inclined to allow the quartz sand to flow smoothly. The reason for choosing the horizontal angle 4 of the quartz tube to be 1 - 8° is that if the angle is too small, the quartz sand is difficult to flow, and if the angle is too large, the stability of the quartz tube is not good.

[0039] In this embodiment, the upper port of the quartz tube 8 is provided with an inner sealing edge within 1 - 10cm. The function of the inner sealing edge is to prevent the quartz sand from spilling outside the quartz tube during feeding; the feeding pipe 6 of the vibrating feeder is inserted 5 - 15cm along the central direction of the quartz tube 8, and the outer wall of the feeding pipe 6 is kept 3 - 10cm away from the inner sealing edge to ensure normal feeding of the electromagnetic vibrating feeder when the quartz tube 8 rotates.

[0040] In this embodiment, an inner ring conical protrusion 20 is made inside the part of the quartz tube 8 passing through the heating component 9. The inner ring conical protrusion 20 is 0.5 - 5cm high, and an inner ring conical protrusion 20 (24 is the cross-section of the inner ring conical protrusion) is made every 5 - 20cm.

[0041] Among them, the functions of the inner ring conical protrusion 20 are, firstly, to turn over the quartz sand during its flow to make the quartz sand heated evenly, and secondly, to block the flow of the quartz sand to form a pile and extend the heating time, so that the quartz sand is more fully calcined and heated.

[0042] In this embodiment, the discharging end 16 of the quartz tube (with a quartz tube discharging opening 22) is closed, and 4 to 10 sand discharging openings 23 are formed in the quartz tube on both sides of the discharging end; in the quartz tube 8, a 7-shaped chute 21 is made starting from leaving the heating component 9, the angle of the 7-shaped chute 21 is 100 to 150°, and it is connected to the sand discharging opening 23. In addition, the calcination device 2 further includes a quartz tube feeding end 15 and a quartz tube feeding opening 25.

[0043] Among them, the closing of the discharging port is to prevent the inflow of external cold air from reducing the temperature of the calcined quartz sand; the 7-shaped chute is arranged inside the tube and can guide the flow to the sand discharging opening. The function of the 7-shaped chute 21 is to allow the calcined quartz sand to quickly flow into the cold water tank 10 to complete water quenching.

[0044] In this embodiment, the heating component 9 uses silicon molybdenum rods and heat-insulating cotton to form a box around the quartz tube 8 to ensure rapid and uniform heating of the quartz tube 8.

[0045] In this embodiment, the heat-insulating component includes high-temperature resistant heat-insulating cotton wrapped around the quartz tube exposed at the discharging end. A heat-insulating chamber 19 is provided at the discharging end. An air outlet is provided on the side of the heat-insulating chamber 19 to connect to ventilation equipment, facilitating the discharge of water vapor generated during water quenching. The heat-insulating chamber 19 can cover the sand discharging end without affecting observation and the movement of the cold water tank 10.

[0046] Among them, the functions of the heat-insulating component are, firstly, to ensure that the temperature remains high during the water quenching of the calcined sand, and secondly, to prevent external impurities from mixing in.

[0047] In this embodiment, the quartz tube rotating component includes a reduction motor 18 and a rotating bearing 17 installed at both ends of the quartz tube 8, which can rotate the quartz tube 8 to ensure uniform heating of the quartz tube 8 and thus ensure safe use.

[0048] In this embodiment, the cold water tank 10 uses a PP barrel with a partition and a small cart 29, and is also provided with a cold water tank PP water filtering plate 26 and a cold water tank water outlet pipe 28, and a ton bag 27 with an added surrounding feeding opening is laid on the inner side of the barrel wall.

[0049] Among them, the laying of the ton bag 27 with an added surrounding feeding opening facilitates both the taking of the quartz sand after calcination and water quenching and the transfer of the quartz sand. The circulating water tank 11 and the cooling tower 12 are commonly used to ensure that the temperature of the water in the cold water tank 10 is below 60° to ensure the effect of water quenching.

[0050] In this embodiment, the cold water circulation system is a conventional method. In the present invention, the cold water tank 10, the circulation water tank 11, and the cooling tower 12 constitute a water quenching cold water circulation system, ensuring that the temperature of the water in the cold water tank 10 is below 60°C to ensure the effect of continuous water quenching. The process is as follows: The water in the cold water tank 10 is pumped into the cooling tower 12 through the cold water tank water outlet 14. The water is cooled by the cooling tower and enters the circulation water tank 11. The water in the circulation water tank 11 enters the cold water tank 10 through the cold water tank water inlet 13, and circulates in this way to ensure that the temperature of the water in the cold water tank 10 meets the requirements.

[0051] Among them, the cold water tank water inlet 13 is both the water inlet pipe of the cold water tank 10 and the water outlet pipe of the circulation water tank 11; the cold water tank water outlet 14 is both the water outlet pipe of the cold water tank 10 and the water inlet pipe of the cooling tower 12; the cold water tank water inlet 13 and the cold water tank water outlet 14 are not connected.

[0052] To better understand the above exemplary embodiments of the present invention, the following further illustrates them with specific examples.

[0053] Example 1

[0054] A device for calcining and water quenching quartz sand, as Figures 1-5 shown. The total length of the quartz tube is 6.5 meters. The angle between the quartz tube and the horizontal is 3°. The upper port of the quartz tube is internally sealed with a 3 - centimeter edge. The feeding tube is inserted 10 centimeters into the center of the quartz tube. The outer wall of the feeding tube is 7 centimeters away from the internal seal. An inner ring conical protrusion is made every 15 centimeters, and the height of the inner ring conical protrusion is 2 centimeters. The discharge port is closed, and 6 sand outlets are opened on both sides of the port. The angle of the 7 - shaped chute is 130°. Working principle: First, pour high - purity quartz sand into the PP hopper. The electromagnetic vibrator 7 vibrates and guides the high - purity quartz sand into the calcining quartz tube through the quartz feeding tube. The high - purity quartz sand continuously flips and aggregates after passing through the inner ring conical protrusion in the heating zone and is fully and evenly calcined. The high - purity quartz sand leaves the heating zone and enters the discharge end of the quartz tube, and quickly flows into the cold water tank through the 7 - shaped chute and the side sand outlets to complete water quenching. Since the residence time of the high - purity quartz sand leaving the heating zone is extremely short, and the quartz tube at the discharge port end is closed, the exposed quartz tube at the discharge port end is wrapped with high - temperature heat - insulating cotton, and a heat - insulating room is made at the sand discharge end. All these ensure that the temperature loss of the high - purity quartz sand when entering the water is extremely small, and the circulating water ensures the temperature of the water in the cold water tank, guaranteeing the best water quenching effect.

[0055] Example 2

[0056] A quartz sand calcination and water quenching device. The total length of the quartz tube is 6.5 meters, and the angle between the quartz tube and the horizontal is 6°. A 2-cm inner sealing edge is made at the upper port of the quartz tube. The feeding tube is inserted 7 cm into the center of the quartz tube, and the outer wall of the feeding tube is 8 cm away from the inner sealing edge. An inner ring conical protrusion is made every 10 cm, and the height of the inner ring conical protrusion is 3 cm. The discharging port is closed, and 8 sand outlets are opened on both sides of the port. The angle of the 7-shaped chute is 110°. Compared with Embodiment 1, in Embodiment 2, the water quenching treatment amount of quartz sand can be adjusted by adjusting the total length of the quartz tube and the horizontal angle of the quartz tube.

[0057] Although the present invention has been described above in connection with exemplary embodiments and the accompanying drawings, those of ordinary skill in the art should clearly understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A quartz sand calcination and water quenching device, characterized in that, The device includes a feeding device, a calcining device, and a water quenching device arranged in sequence along the material traveling direction, where the feeding device can feed quartz sand into the calcining device and includes a hopper and a vibrating feeder; the calcining device can conduct high-temperature calcination on quartz sand and includes a quartz tube, a heating component, a heat insulation component, and a quartz tube rotating component; the water quenching device can conduct water quenching on the calcined quartz sand and includes a cold water tank, a circulating water tank, and a cooling tower.

2. The quartz sand calcination and water quenching device according to claim 1, characterized in that, The vibrating feeder includes an electromagnetic vibrating feeder, and the electromagnetic vibrating feeder includes a feeding pipe and an electromagnetic vibrator; The hopper is made of PP material, the hopper outlet corresponds to the large opening of the feeding pipe, the feeding pipe is made of quartz material, and is fixed to the electromagnetic vibrator with a stainless steel hoop and heat-resistant cotton.

3. The quartz sand calcination and water quenching device according to claim 1, wherein, The total length of the quartz tube is 5 - 8m; the quartz tube passes through the heating component to form an integral body, and the horizontal angle between the quartz tube and the horizontal line is 1 - 8°.

4. The quartz sand calcination and water quenching device according to claim 1, characterized in that, The upper port of the quartz tube is internally sealed with a 1 - 10cm edge, the feeding pipe of the vibrating feeder is inserted 5 - 15cm along the central direction of the quartz tube, and the outer wall of the feeding pipe is kept 3 - 10cm away from the internal seal.

5. The quartz sand calcination and water quenching device according to claim 1, characterized in that, An inner ring conical protrusion is made inside the part of the quartz tube passing through the heating component, the height of the inner ring conical protrusion is 0.5 - 5cm, and an inner ring conical protrusion is made every 5 - 20cm.

6. The quartz sand calcination and water quenching device according to claim 1, characterized in that, The discharging end of the quartz tube is closed, and 4 - 10 sand discharging ports are opened on the quartz tube on both sides of the discharging end; a 7-shaped flow channel is arranged inside the quartz tube starting from leaving the heating component, the angle of the 7-shaped flow channel is 100 - 150°, and is connected to the sand discharging port.

7. The quartz sand calcination and water quenching device according to claim 1, characterized in that, The heating component uses silicon molybdenum rods and heat insulation cotton to form a box around the quartz tube to ensure rapid and uniform heating of the quartz tube.

8. The quartz sand calcination and water quenching device according to claim 1, characterized in that The heat insulation component includes high-temperature heat insulation cotton wrapped around the quartz tube exposed at the discharging end, a heat insulation chamber is provided at the discharging end, an air outlet is provided on the side of the heat insulation chamber to connect to ventilation equipment, and the heat insulation chamber can cover the sand discharging end without affecting observation and the movement of the cold water tank.

9. The quartz sand calcination and water quenching device according to claim 1, characterized in that, The quartz tube rotating component includes a reduction motor and a rotating bearing placed at both ends of the quartz tube to drive the quartz tube to rotate.

10. The quartz sand calcination and water quenching device according to claim 1, wherein The cold water tank uses a partitioned PP barrel with a small cart, and a ton bag with an additional surrounding feeding port is laid on the inner side of the barrel wall.

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