Acid pickling purification reaction barrel for zircon sand and quartz sand

Abstract

The utility model provides a zircon sand and quartz sand pickling purification reaction barrel, which comprises a barrel body (1) and is characterized in that a sand inlet (4), a first water injection port (5), an air outlet (6), a second water injection port (7), a sand outlet (8), a first acid inlet (9) and a first air inlet (10) are arranged on the barrel body (1), and an acid inlet pipe (11) and an acid liquor spray pipe (12) are sequentially communicated with the acid inlet (9). The air inlet (10) is sequentially communicated with an air inlet pipe (13) and an air ejector pipe (14), and an acid filtering device (15) is arranged at the bottom of the cylinder body (1). The acid pickling device has the advantages of reasonable structure, sufficient reaction of acid liquor and raw material sand, good acid pickling reaction effect, high acid liquor recovery efficiency, reduction of energy consumption, high deacidification and cleaning speed and improvement of production efficiency, can be matched with an automatic production system, and is suitable for acid pickling purification production processes of zircon sand, quartz sand and other mineral products.

Description

TECHNICAL FIELD

[0001] The utility model relates to the purification field of photovoltaic raw material and zircon sand raw material, and particularly to a zircon sand and quartz sand pickling purification reaction bucket. BACKGROUND

[0002] With the development of the photovoltaic industry, the demand for quartz sand and high-end zirconium materials (zircon sand) for photovoltaic use is increasing, and pickling and purification of zircon sand and quartz sand with high impurities and high iron content effectively improves the added value of photovoltaic materials.

[0003] At present, most of the pickling and purification production enterprises in China use pickling reaction buckets in the pickling process, but all have the shortcomings of complex pipeline arrangement in the bucket, short service life, complicated maintenance process, low pickling reaction effect, low acid liquid recovery rate, serious environmental pollution, and high production cost

[0004] Moreover, in actual production, the different particle sizes of different sand sources make a big difference in water permeability, and the existing pickling reaction bucket design cannot be applied to various sand sources with different particle sizes, especially when dealing with sand sources with small particle size or poor water permeability, the existing pickling and purification reaction bucket has poor effect in deacidification and dehydration operation, and even cannot perform deacidification and dehydration operation. UTILITY MODEL CONTENTS

[0005] The utility model is just to overcome the deficiencies in the prior art, and provides a zircon sand and quartz sand pickling and purification reaction bucket.

[0006] The present application provides the following technical solutions:

[0007] A zircon sand and quartz sand pickling and purification reaction bucket, which comprises a cylinder body, characterized in that: a sand inlet, a first water inlet, a gas outlet, an overflow port, a second water inlet, a sand outlet, at least one first acid inlet and at least one first gas inlet are arranged on the cylinder body; an acid inlet pipe is arranged in the cylinder body and communicates with the acid inlet; an acid liquid spray pipe is connected to one end of the acid inlet pipe; a gas inlet pipe is arranged in the cylinder body and communicates with the gas inlet; a gas spray pipe is connected to one end of the gas inlet pipe; an acid filtering device is arranged at the bottom of the cylinder body; at least two discharge pipes are arranged at the bottom of the acid filtering device; and a manhole is arranged above the acid filtering device.

[0008] On the basis of the above technical solutions, the following further technical solutions can also be provided:

[0009] The acid filtering device comprises a bottom plate connected to the bottom of the cylinder body, a pipe body arranged on the bottom plate, a plurality of through holes uniformly distributed on the pipe wall of the middle part of the pipe body, and a filter sleeve sleeved on the pipe body.

[0010] The bottom of the cylinder body is in a conical structure, and the position of the second water inlet is higher than that of the sand outlet.

[0011] The top of the barrel is symmetrically provided with two first acid inlets and two first air inlets, and the whole is in the shape of a cross.

[0012] The plastic lining layer is made of plastic, rubber or tetrafluoroethylene material.

[0013] The pipe body of the acid liquid spray pipe and the air spray pipe is uniformly provided with through holes, and the pipe body is in a branch structure or a spiral curve structure.

[0014] A group of supporting columns corresponding to the filter sleeve are uniformly distributed on the bottom plate in the pipe body.

[0015] The barrel is made of plastic or steel, and a tortoise shell layer and a plastic lining layer or only a plastic lining layer are sequentially covered on the inner wall of the steel barrel, and the plastic material can be selected from PE, PP or PPH.

[0016] The middle and lower part of the barrel is further provided with a second acid inlet in communication with the acid inlet pipe.

[0017] The middle and lower part of the barrel is further provided with a second air inlet pipe in communication with the air inlet pipe.

[0018] The utility model has the advantages of reasonable structure, sufficient reaction of acid liquid and raw sand, good pickling reaction effect, high acid liquid recovery efficiency, reduced energy consumption, fast deacidification and cleaning speed, improved production efficiency, adaptability to automatic production system, and applicability to pickling purification production process of zircon sand and quartz sand.

[0019] The utility model has the advantages of reasonable structure, sufficient reaction of acid liquid and raw sand, good pickling reaction effect, high acid liquid recovery efficiency, reduced energy consumption, fast deacidification and cleaning speed, improved production efficiency, adaptability to automatic production system, and applicability to pickling purification production process of zircon sand and quartz sand. DRAWINGS

[0020] Figure 1 It is a structural schematic view of the embodiment 1 of the utility model;

[0021] Figure 2 It is Figure 1 A schematic view of the top of the middle barrel;

[0022] Figure 3 It is Figure 1 A structural schematic view of the acid filtering device;

[0023] Figure 4 It is Figure 3 A distribution diagram of the supporting column;

[0024] Figure 5 It is a structural schematic view of the embodiment 2. DETAILED DESCRIPTION EMBODIMENT

[0025] As Figures 1-4As shown, a zircon sand, quartz sand acid pickling purification reaction bucket, it includes the steel cylinder 1, the cylinder 1 main body is cylindrical, its lower end is conical structure, a group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0026] The inner wall of the cylinder 1 is covered with a group of support legs 1b in turn, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0027] A group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0028] A group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0029] A group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0030] A group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0031] A group of support legs 1b is uniformly distributed on the outer wall of the conical structure, and the pull rod 1a is connected between the support leg 1b and the conical cylinder bottom.

[0032] A coaxially distributed acid filtration device 15 is provided at the bottom of the cylinder 1. The acid filtration device 15 includes a base plate 15a connected to the bottom of the cylinder 1, a tube 15b on the base plate 15a, and a set of vertically distributed support columns 15e evenly distributed on the base plate 15a inside the tube 15b. A set of through holes 15c are evenly distributed on the tube wall in the middle part of the tube 15b, and a filter sleeve 15d is fitted on the tube 15b. A set of through holes 15c...

[0033] An acid filtration device 15 is installed at the bottom of the cylinder 1 below the sand outlet 8. The acid filtration device 15 includes a base plate 15a connected to the bottom of the cylinder 1, and a tube 15b is longitudinally installed on the base plate 15a. A set of through holes 15c are evenly distributed on the tube wall in the middle part of the tube body 15b, and a filter sleeve 15d is fitted on the tube body 15b. The filter sleeve 15d is made of nylon, polyester, or PTFE material, and completely covers the upper end face and the upper middle part of the tube wall of the tube body 15b, and is then fixed to the tube body 15b with ropes. A limiting protrusion 15e on the outer wall of the tube body 15b corresponds to the rope. In actual binding, the filter sleeve 15d can be tied on both sides of the limiting protrusion 15e to fix it to the tube body 15b.

[0034] A set of support columns 15e, which correspond to and cooperate with the filter sleeve 15d, are evenly distributed on the bottom plate 15a inside the tube body 15b. The support columns 15e support the filter sleeve 15d on the upper end face of the tube body 15b, so as to prevent the filter sleeve 15d facing the upper end of the tube body 15b from collapsing.

[0035] Three discharge pipes 16 are connected to the base plate 15a of the acid filtration device 15, one of which serves as the deacidification pipe, another as the dehydration pipe, and the third as a spare pipe. Each pipe is equipped with a corresponding valve (not shown in the figure).

[0036] A manhole 18 is provided on the cylinder 1 above the side of the acid filtration device 15. A second acid inlet 9a is also provided horizontally in the lower middle part of the cylinder 1, one end of which is connected to the acid inlet pipe 11. A second air inlet pipe 13a is also provided horizontally in the lower middle part of the cylinder 1, one end of which is connected to the air inlet pipe 13. The second acid inlet and the second air inlet pipe are used as backup ports, or both ports (pipes) can be opened simultaneously. Example

[0037] like Figure 5 As shown, the difference between Embodiment 2 and 1 is that Embodiment 2 uses a configuration of two first acid inlets 9 and two first air inlets 10, with the four inlets arranged in a cross shape. Furthermore, adjacent first acid inlets 9 and first air inlets 10 are spaced apart.

[0038] Work process:

[0039] Raw material sand (zircon sand or quartz sand) enters the cylinder through the sand inlet, and after the feeding is completed, the acid solution for pickling is pumped into the acid inlet pipe and then sprayed upward from the acid liquid spray pipe at the bottom of the cylinder, so that the raw material sand in the cylinder presents a rolling state from bottom to top.

[0040] When the liquid level of the acid solution reaches the predetermined position, it is overflowed from the overflow port and enters the acid solution heating device (natural gas boiler, electric heating boiler, biomass boiler, graphite heat exchanger) and is heated again, then pumped into the acid inlet pipe, and after a period of time, the temperature of the raw material sand in the cylinder reaches a certain temperature, and then the valves on the overflow port and the first acid inlet are closed to stop the acid entering.

[0041] The compressed air enters the air inlet pipe and is sprayed upward from the air injection pipe at the bottom of the cylinder, so that the raw material sand remains in a rolling state in the acid solution for several hours to complete the entire pickling reaction process.

[0042] When the raw material sand is quartz sand, the acid solution for pickling is generally a mixture of oxalic acid and hydrofluoric acid, and the specific mixing ratio is the conventional technology in existing production. When the raw material sand is zircon sand, the acid solution is generally oxalic acid or hydrochloric acid.

[0043] After the pickling reaction state is completed, the acid solution is discharged through the deacidification pipe in the three discharge pipes 16, and the discharged acid solution enters the recovery pipe not shown in the figure. After the acid is discharged, the valve of the deacidification pipe is closed, and then water is injected through the first water inlet. When the liquid level reaches the predetermined position, the water injection is stopped, the compressed air enters the air inlet pipe, and is sprayed upward from the air injection pipe at the bottom of the cylinder, so that the raw material sand remains in a rolling state in the water to perform sand washing work. After the sand washing work is completed, the water is discharged through the dehydration pipe in the three discharge pipes 16.

[0044] After several sand washing operations, the HP value of the water discharged from the dehydration pipe is detected manually and qualified, the sand washing is completed. Finally, the sand outlet is opened while ensuring that the first water inlet and the second water inlet continue to inject water, and the sand is discharged by the water flushing mode of the first water inlet and the second water inlet.

Claims

1. A zircon sand, quartz sand pickling purification reaction barrel, comprising a barrel body (1), characterized in that: The barrel (1) is provided with a sand inlet (4), a first water inlet (5), an air outlet (6), an overflow port (17), a second water inlet (7), a sand outlet (8), at least one first acid inlet (9) and at least one first gas inlet (10) on the barrel (1), and an acid inlet pipe (11) in communication with the first acid inlet (9) is arranged in the barrel (1), an acid liquid spray pipe (12) is in communication with one end of the acid inlet pipe (11), an air inlet pipe (13) in communication with the first gas inlet (10) is arranged in the barrel (1), a gas spray pipe (14) is in communication with one end of the air inlet pipe (13), an acid filtering device (15) is arranged at the bottom of the barrel (1), at least two discharge pipes (16) are arranged at the bottom of the acid filtering device (15), and a manhole (18) is arranged above the acid filtering device (15) on the barrel (1).

2. The zircon sand and quartz sand acid washing and purification reaction barrel according to claim 1, characterized in that: The acid filtering device (15) comprises a bottom plate (15a) connected to the bottom of the barrel (1), a pipe body (15b) arranged on the bottom plate (15a), a plurality of through holes (15c) uniformly distributed on the pipe wall of the pipe body (15b), and a filter sleeve (15d) sleeved on the pipe body (15b).

3. The zircon sand and quartz sand acid washing and purification reaction barrel according to claim 1, characterized in that: The bottom of the barrel (1) is in a conical structure, and the position of the second water inlet (7) is higher than that of the sand outlet (8).

4. The reaction barrel for purifying zircon sand and quartz sand by acid washing according to claim 1, characterized in that: The top of the barrel (1) is symmetrically provided with two first acid inlets (9) and two first gas inlets (10), and the whole is in a cross shape.

5. The acid washing and purifying reaction barrel for zircon sand and quartz sand according to claim 1, characterized in that: The pipe bodies of the acid liquid spray pipe (12) and the gas spray pipe (14) are uniformly provided with through holes, and the pipe bodies are in a branch structure or a spiral curve structure.

6. The reaction barrel for purifying zircon sand and quartz sand by acid washing according to claim 2, characterized in that: A plurality of support columns (15e) corresponding to the filter sleeve (15d) are uniformly distributed on the bottom plate (15a) in the pipe body (15b).

7. The reaction barrel for purifying zircon sand and quartz sand by acid washing according to claim 2, characterized in that: The barrel (1) is made of plastic or steel, and the inner wall of the steel barrel (1) is sequentially covered with a tortoise shell layer (2) and a plastic lining layer (3) or only covered with the plastic lining layer (3), and the plastic material can be selected from PE, PP or PPH.

8. The reaction kettle for purifying zircon sand and quartz sand by acid washing according to claim 1 or 2, characterized in that: The middle and lower part of the barrel (1) is further provided with a second acid inlet (9a) in communication with the acid inlet pipe (11).

9. The reaction tank for purifying zircon sand or quartz sand by acid washing according to claim 1 or 2, characterized in that: The middle and lower part of the barrel (1) is further provided with a second gas inlet pipe (13a) in communication with the air inlet pipe (13).

10. The reaction tank for purifying zircon sand and quartz sand by acid washing according to claim 7, characterized in that: The plastic lining layer (3) is made of plastic, rubber or tetrafluoroethylene.

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