Device for leaching nickel metal by using concentrated sulfuric acid

Abstract

The utility model relates to the technical field of metal preparation, in particular to a device for leaching nickel metal by using concentrated sulfuric acid, which comprises a reaction barrel, a circulating component and a waste gas treatment component, the circulating component is used for recycling concentrated sulfuric acid, and the waste gas treatment component is used for treating waste gas generated during reaction. The sulfuric acid pump is started to pump concentrated sulfuric acid into the containing box through the output pipe, then the sulfuric acid pump is started to be matched with the input pipe to input the concentrated sulfuric acid into the reaction barrel again, recycling of the sulfuric acid is achieved, energy consumption is reduced, meanwhile, a large amount of nitric oxide and nitrogen dioxide are generated through the reaction of the concentrated sulfuric acid and nickel and conveyed to the ignition device through the conveying pipe to be ignited, and energy is saved. Water in the evaporation chamber is evaporated through heating, the steam generator is matched for power generation, energy is supplied to the whole device, meanwhile, oxygen and nitrogen poison gas generated after nitric oxide and nitrogen dioxide are ignited can also be absorbed by water in the first interlayer, pollution to the environment is avoided, meanwhile, a large amount of energy is saved, and then cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal preparation, in particular to a device used for leaching nickel metal with concentrated sulfuric acid. Background Art

[0002] As we all know, nickel metal is widely used in modern industry, especially in the fields of stainless steel, alloy steel, battery materials, etc. In the process of extracting nickel metal, concentrated sulfuric acid leaching is a commonly used method.

[0003] After searching, the utility model patent with Chinese patent publication number CN219032302U discloses a device for sintering ceramsite with leached residue after biological leaching of electroplating sludge, which includes a crusher, a leaching agitator, a filter press, an extractor, an electrolytic cell, a dryer, a granulator, a rotary kiln, a desulfurization tower, a bag filter, an induced draft fan, and a chimney. The device performs biological leaching on the crushed electroplating sludge, and then separates the solid and liquid through the filter press. The filtrate is extracted and precipitated step by step to recover five heavy metal products of copper, chromium, iron, zinc, and nickel. The leached residue is dried and mixed with a certain amount of gold tailings to form, and then sent to the tail of the rotary kiln for sintering to obtain ceramsite. The utility model realizes the resource utilization of the leached residue while recovering the heavy metals in the electroplating sludge, which can not only scientifically dispose of the sludge, but also provide green building materials products for energy-saving buildings, and has good economic benefits and application prospects.

[0004] Although the above technical solution solves the problem of resource utilization of leached residue, a large number of devices are used in the above technical solution, and the energy consumption problem is relatively large. In addition, a large amount of waste gas will be generated during the leaching process, which will cause damage to the environment if not handled in time. Therefore, a device for leaching nickel metal with concentrated sulfuric acid is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a device for leaching nickel metal with concentrated sulfuric acid. In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A device for leaching nickel metal with concentrated sulfuric acid, comprising a reaction barrel and

[0007] A circulation component, the function of which is to circulate concentrated sulfuric acid;

[0008] An exhaust gas treatment component, wherein the exhaust gas treatment component is used to treat the exhaust gas generated during the reaction;

[0009] A vibrating conveyor belt, wherein the vibrating conveyor belt is arranged on the side of the reaction barrel;

[0010] A centrifuge is arranged on the other side of the reaction barrel.

[0011] Preferably, the circulation component comprises:

[0012] An output pipe, the output pipe is arranged on the side of the reaction barrel;

[0013] A placement box, the placement box is arranged on the output tube;

[0014] A sulfuric acid pump, wherein the sulfuric acid pump is arranged on the placement box;

[0015] An input tube is arranged on the placement box and communicated with the reaction barrel.

[0016] Preferably, the exhaust gas treatment component comprises:

[0017] A delivery pipe, wherein the delivery pipe is arranged on the reaction barrel;

[0018] a combustion chamber, the combustion chamber being arranged on the delivery pipe;

[0019] An ignition device, the ignition device is arranged at the bottom of the combustion chamber, and the delivery pipe is in communication with the ignition device;

[0020] An evaporation chamber, the evaporation chamber being arranged on the top of the combustion chamber;

[0021] A copper plate, which is disposed at the bottom of the evaporation chamber and is fixedly connected to the combustion chamber;

[0022] A steam generator is arranged on the top of the evaporation chamber.

[0023] Preferably, a stirrer is arranged on the inner wall of the reaction barrel;

[0024] A cover plate, the cover plate being arranged on the top of the reaction barrel;

[0025] A motor is arranged on the top of the cover plate, and an output shaft of the motor is fixedly connected to the mixer.

[0026] Preferably, the first partition layer is arranged on the inner wall of the combustion chamber.

[0027] Preferably, a first faucet is provided on a side of the combustion chamber, and one end of the first faucet extends into the interior of the combustion chamber;

[0028] The second water faucet is arranged on the side of the evaporation chamber, and one end of the second water faucet extends into the interior of the evaporation chamber.

[0029] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0030] 1. The vibrating conveyor belt transports nickel-containing metal powder or minerals to the reaction barrel. The vibrating conveyor belt can stably transport it to the reaction barrel to prevent excessive material feeding at one time. When the concentrated sulfuric acid in the reaction barrel is used, the sulfuric acid pump is started to pump the concentrated sulfuric acid into the placement box through the output pipe, filter it in the placement box, and start the sulfuric acid pump to cooperate with the input pipe to re-input it into the reaction barrel after cooling, so as to realize the reuse of sulfuric acid and reduce energy consumption. At the same time, concentrated sulfuric acid reacts with nickel to produce a large amount of nitric oxide and nitrogen dioxide, which are transported to the ignition device through the delivery pipe and ignited. The fire after ignition heats the copper plate, and the copper plate heats the water in the evaporation chamber to evaporate, and the steam generator is used to generate electricity to power the entire device. At the same time, the oxygen and nitrogen poisonous gases produced after the ignition of nitric oxide and nitrogen dioxide will also be absorbed by the water in the first compartment, which not only avoids pollution to the environment, but also saves a lot of energy, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the combustion chamber of the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the evaporation chamber of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the mixer of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the reaction barrel of the utility model.

[0036] Among them: 1. reaction barrel; 2. vibrating conveyor belt; 3. centrifuge; 4. output pipe; 5. placement box; 6. sulfuric acid pump; 7. input pipe; 8. delivery pipe; 9. combustion chamber; 10. ignition device; 11. evaporation chamber; 12. copper plate; 13. steam generator; 14. mixer; 15. cover plate; 16. motor; 17. first compartment; 18. first faucet; 19. second faucet. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figure 1-5, a device for leaching nickel metal with concentrated sulfuric acid, including a reaction barrel 1, which is the core part of the device and is used to accommodate the chemical reaction between concentrated sulfuric acid and nickel metal raw materials. The reaction barrel 1 is made of corrosion-resistant materials to withstand the strong corrosiveness of concentrated sulfuric acid. The function of the circulation component is to recycle the concentrated sulfuric acid to reduce the consumption of raw materials and the generation of waste. The function of the exhaust gas treatment component is to treat the exhaust gas generated during the reaction to avoid pollution to the environment. A vibrating conveyor belt 2 is installed on the side of the reaction barrel 1 to transport minerals or powders containing nickel to the reaction barrel 1. The vibrating conveyor belt 2 has the characteristics of continuous transportation, smooth operation and easy maintenance, and can ensure the efficient transportation of raw materials. A centrifuge 3 is installed on the other side of the reaction barrel 1 to classify the nickel metal that has reacted well. Through high-speed rotation, the centrifuge 3 can separate the nickel metal from the reacted solution or other impurities to improve the purity of the nickel metal.

[0039] The circulation component includes: an output pipe 4 fixedly connected to the side of the reaction barrel 1, used for extracting concentrated sulfuric acid from the reaction barrel 1, one end of the output pipe 4 extends into the interior of the reaction barrel 1 to ensure that sufficient concentrated sulfuric acid can be extracted, a placement box 5 fixedly connected to the output pipe 4, used to fix the sulfuric acid pump 6, and at the same time filter and cool the used sulfuric acid for secondary utilization, the sulfuric acid pump 6 is installed on the placement box 5, responsible for providing power for extracting concentrated sulfuric acid, the sulfuric acid pump 6 is made of a material that can resist the corrosion of concentrated sulfuric acid, and has sufficient flow and head to meet the needs of recycling, an input pipe 7 fixedly connected to the placement box 5, and the input pipe 7 is communicated with the reaction barrel 1, the sulfuric acid pump 6 inputs the extracted concentrated sulfuric acid into the reaction barrel 1 again through the input pipe 7, so as to realize the recycling of concentrated sulfuric acid, and the design of the input pipe 7 ensures that the concentrated sulfuric acid can smoothly flow back to the interior of the reaction barrel 1 and be fully mixed with the original reaction solution.

[0040] The exhaust gas treatment component includes: a delivery pipe 8 fixedly connected to the reaction barrel 1, used to transport the exhaust gas generated in the reaction barrel 1 to subsequent treatment equipment, a combustion chamber 9 fixedly connected to the delivery pipe 8, the exhaust gas enters the combustion chamber 9 through the delivery pipe 8, and is burned in the combustion chamber 9, an ignition device 10 fixedly connected to the bottom of the combustion chamber 9, used to ignite the exhaust gas entering the combustion chamber 9, the ignition device 10 is reliable and efficient, can start quickly and ensure stable combustion of the exhaust gas, and the delivery pipe 8 is communicated with the ignition device 10, an evaporation chamber 11 is fixedly connected to the top of the combustion chamber 9, the function of the evaporation chamber 11 is to hold water, and at the same time cooperate with the copper plate 12 to evaporate water to drive the steam generator 13 to generate electricity, the copper plate 12 is fixedly connected to the bottom of the evaporation chamber 11, the copper plate 12 may play a role of heat exchange here, and transfer the heat in the combustion chamber 9 to the evaporation chamber 11, and the copper plate 12 is fixedly connected to the combustion chamber 9, and the steam generator 13 is installed on the top of the evaporation chamber 11, and is used to generate electricity using the steam generated during the evaporation process.

[0041] The agitator 14 is rotatably connected to the inner wall of the reaction barrel 1. The agitator 14 is an important component in the reaction barrel 1 and is used to ensure that the concentrated sulfuric acid and the nickel metal raw material can be fully mixed, thereby improving the reaction efficiency. The cover plate 15 is detachably connected to the top of the reaction barrel 1, and is used to close the reaction barrel 1 and prevent the material from splashing out during the reaction. It is also used to carry the motor 16. The motor 16 is installed on the top of the cover plate 15, and the output shaft of the motor 16 is fixedly connected to the agitator 14. When the motor 16 is started, its output shaft drives the agitator 14 to rotate.

[0042] The first partition 17 is fixedly connected to the inner wall of the combustion chamber 9 and is used to contain water for absorbing oxygen and nitrogen poisonous gases generated when nitric oxide and nitrogen dioxide are burned.

[0043] The first water faucet 18 is fixedly connected to the side of the combustion chamber 9, and one end of the first water faucet 18 extends to the interior of the combustion chamber 9, and is used to inject water into the combustion chamber 9 when necessary, or to discharge the water that has absorbed oxygen and nitrogen toxic gases. The second water faucet 19 is fixedly connected to the side of the evaporation chamber 11, and one end of the second water faucet 19 extends to the interior of the evaporation chamber 11, and is used to inject water into the evaporation chamber 11 when necessary, so as to avoid insufficient water in the evaporation chamber 11 and affect the power generation of the steam generator 13.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for leaching nickel metal with concentrated sulfuric acid, comprising a reaction barrel (1), characterized in that: Also includes A circulation component, the function of which is to circulate concentrated sulfuric acid; An exhaust gas treatment component, wherein the exhaust gas treatment component is used to treat the exhaust gas generated during the reaction; A vibrating conveyor belt (2), wherein the vibrating conveyor belt (2) is arranged on a side of the reaction barrel (1); A centrifuge (3), wherein the centrifuge (3) is arranged on the other side of the reaction barrel (1).

2. The device for leaching nickel metal with concentrated sulfuric acid according to claim 1, characterized in that: The loop components include: an output pipe (4), the output pipe (4) being arranged on a side of the reaction barrel (1); a placement box (5), wherein the placement box (5) is arranged on the output tube (4); a sulfuric acid pump (6), wherein the sulfuric acid pump (6) is arranged on the placement box (5); An input tube (7), wherein the input tube (7) is arranged on the placement box (5), and the input tube (7) is communicated with the reaction barrel (1).

3. A device for leaching nickel metal with concentrated sulfuric acid according to claim 2, characterized in that: The exhaust gas treatment component comprises: A delivery pipe (8), wherein the delivery pipe (8) is arranged on the reaction barrel (1); A combustion chamber (9), wherein the combustion chamber (9) is arranged on the delivery pipe (8); an ignition device (10), the ignition device (10) being arranged at the bottom of the combustion chamber (9), and the delivery pipe (8) being in communication with the ignition device (10); An evaporation chamber (11), wherein the evaporation chamber (11) is arranged on the top of the combustion chamber (9); a copper plate (12), the copper plate (12) being arranged at the bottom of the evaporation chamber (11), and the copper plate (12) being fixedly connected to the combustion chamber (9); A steam generator (13), wherein the steam generator (13) is arranged on the top of the evaporation chamber (11).

4. The device for leaching nickel metal with concentrated sulfuric acid according to claim 3, characterized in that: a stirrer (14), the stirrer (14) being arranged on the inner wall of the reaction barrel (1); A cover plate (15), wherein the cover plate (15) is arranged on the top of the reaction barrel (1); A motor (16), wherein the motor (16) is arranged on the top of the cover plate (15), and an output shaft of the motor (16) is fixedly connected to the mixer (14).

5. The device for leaching nickel metal with concentrated sulfuric acid according to claim 4, characterized in that: A first partition layer (17), wherein the first partition layer (17) is arranged on the inner wall of the combustion chamber (9).

6. The device for leaching nickel metal with concentrated sulfuric acid according to claim 5, characterized in that: A first faucet (18), wherein the first faucet (18) is arranged on a side of the combustion chamber (9), and one end of the first faucet (18) extends into the interior of the combustion chamber (9); A second water faucet (19), wherein the second water faucet (19) is arranged on a side of the evaporation chamber (11), and one end of the second water faucet (19) extends into the interior of the evaporation chamber (11).

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