Storage tank for neutralizer powder for lateritic nickel ore acid leach solution

Abstract

A storage tank for neutralizer powder for a lateritic nickel ore acid leach solution, comprising a tank body (1) and a restoring apparatus (2). A feed port is formed in the top of the tank body, and a discharge port is formed in the bottom of the tank body. The restoring apparatus comprises a high-pressure air source (21) and a plurality of branch pipes (22); the high-pressure air source is located outside the tank body; the branch pipes penetrate through the tank body and are sealedly connected to the tank body; air inlet ends of the branch pipes are communicated with the high-pressure air source, air outlet ends of the branch pipes face upwards and are located in the tank body, and the air outlet ends of the plurality of branch pipes are distributed at intervals along the height direction. The storage tank is provided with the restoring apparatus, the high-pressure air source blows air into the tank body by means of the plurality of branch pipes, the branch pipes are distributed at intervals along the height direction, powder in an upper layer has the lowest density and is the first to be blown away, and after the powder in the upper layer is blown away, the pressure on powder in a lower layer is reduced and the powder can also be blown away by the airflow blown out from lower branch pipes, thereby restoring the powder in the entire storage tank to a fluffy state.

Description

A laterite nickel ore acid leaching solution neutralizer powder storage tank Technical Field

[0001] The invention relates to the technical field of powder storage equipment, in particular to a laterite nickel ore acid leaching solution neutralizer powder storage tank. Background Art

[0002] Compared to large, bulk materials, powders are smaller and have a larger total contact surface, significantly accelerating reaction rates. Therefore, various powders are often used in industrial production, depending on the needs of the production process. For example, limestone powder or lime powder is often used as a neutralizing agent in laterite nickel ore hydrometallurgy.

[0003] Powder storage presents a problem. When first entering the storage tank, the powder is relatively fluffy, with ample spaces between particles. This allows for good flowability and allows for smooth discharge from the tank for production. However, after prolonged storage, gravity gradually compresses the powder below it, causing the powder in the tank to become a dense mass, making it impossible to discharge through the discharge pipe. Furthermore, cleaning up the compacted powder is very difficult.

[0004] To address this problem, fans or similar structures are typically installed at the bottom of the storage tank to blow air upwards, keeping the powder fluffy and ensuring smooth discharge. However, if the fan malfunctions or operator errors cause the powder to remain in the tank for a long time, the sediment becomes dense, and the fan is no longer able to fluff it. Currently, there is no effective way to clean or restore the compacted powder, requiring manual cleaning, which is time-consuming and dangerous.

[0005] Summary of the Invention

[0006] In view of this, it is necessary to provide a laterite nickel ore acid leachate neutralizer powder storage tank to solve the technical problem in the prior art of lacking a better way to clean or restore the compacted powder to a fluffy state.

[0007] The present invention provides a laterite nickel ore acid leachate neutralizer powder storage tank, which comprises: a tank body and a recovery device, wherein the top of the tank body is provided with a feed port, and the bottom of the tank body is provided with a discharge port, and the recovery device comprises a high-pressure gas source and a plurality of branch pipes, wherein the high-pressure gas source is located outside the tank body, the branch pipes pass through the tank body and are sealed with the tank body, the gas inlet end of the branch pipe is connected to the high-pressure gas source, the gas outlet end of the branch pipe faces upward and is located inside the tank body, and the gas outlet ends of the plurality of branch pipes are spaced apart along the height direction.

[0008] Furthermore, it also includes an anti-sinking fan, which is located in the tank body and can blow air upwards, and the branch pipe is located above the anti-sinking fan.

[0009] Furthermore, the high-pressure gas source includes a main gas pipe and an air pump, the branch pipes are respectively connected to the main gas pipe, and the gas outlet end of the air pump is connected to the main gas pipe for outputting pressurized gas into the main gas pipe.

[0010] Furthermore, the high-pressure gas source also includes a high-pressure gas tank and a main valve. The end of the main gas pipe away from the branch pipe is connected to the high-pressure gas tank, the gas outlet end of the air pump is connected to the high-pressure gas tank, and the main valve is arranged on the main gas pipe.

[0011] Furthermore, the recovery device also includes a plurality of auxiliary valves, which are correspondingly arranged on the branch pipes and are located outside the tank body.

[0012] Furthermore, the recovery device further includes a plurality of first one-way valves, which are correspondingly arranged in each branch pipe so that the branch pipe can only conduct one-way from outside the tank body to inside the tank body.

[0013] Furthermore, the recovery device also includes a pulse air supply mechanism, which includes multiple sub-gas tanks, an air inlet pipe, multiple air outlet pipes and multiple sub-valves. The air inlet pipe connects the air outlet end of the air pump and each sub-gas tank to supply air to each sub-gas tank. One end of each air outlet pipe is connected to each sub-gas tank, and the other end is connected to the main air pipe. Each sub-valve is respectively arranged on the air outlet pipe.

[0014] Furthermore, the pulse air supply mechanism also includes a plurality of second one-way valves, and the second one-way valves are correspondingly arranged in each air inlet pipe.

[0015] Furthermore, the air outlet end of the branch pipe is formed in a bell-mouth shape and is located on the central axis of the tank body.

[0016] Furthermore, it also includes a feed pipe connected to the feed port and a discharge pipe connected to the discharge port.

[0017] Compared with the prior art, the laterite nickel ore acid leachate neutralizer powder storage tank provided by the present invention has a recovery device. A high-pressure air source blows air into the interior of the tank through multiple branch pipes. The branch pipes are spaced apart along the height direction. The powder in the upper layer has the lowest density and is blown away first. After the powder in the upper layer is blown away, the pressure on the powder in the lower layer is reduced, and it can also be blown away by the airflow blown out by the lower branch pipe, thereby restoring the powder in the entire storage tank to a fluffy state.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] FIG1 is a schematic structural diagram of an embodiment of a storage tank for a neutralizer powder for a laterite nickel ore acid leaching solution provided by the present invention;

[0021] FIG2 is a schematic structural diagram of a pulse gas supply mechanism in another embodiment of a neutralizer powder storage tank for laterite nickel ore acid leaching solution provided by the present invention. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0023] Please refer to Figure 1. The present invention provides a laterite nickel ore acid leachate neutralizer powder storage tank. The laterite nickel ore acid leachate neutralizer powder storage tank can store various powders without limiting the type of powder. The laterite nickel ore acid leachate neutralizer powder storage tank includes a tank body 1 and a recovery device 2, wherein the tank body 1 is a conventional structure with a feed port at the top and a discharge port at the bottom for temporarily storing powder. The recovery device 2 includes a high-pressure gas source 21 and a plurality of branch pipes 22, the high-pressure gas source 21 is located outside the tank body 1, and the branch pipes 22 pass through the tank body 1 and are sealed with the tank body 1. The air inlet end of the branch pipe 22 is connected to the high-pressure gas source 21, and the air outlet end faces upward and is located inside the tank body 1. The air outlet ends of the plurality of branch pipes 22 are spaced apart along the height direction.

[0024] After the powder in the tank body 1 has naturally settled and compacted, it needs to be restored by the recovery device 2. A high-pressure gas source 21 is used to supply air to each branch pipe 22, causing each branch pipe 22 to spray high-pressure gas upward within the tank body 1 to disperse the powder. The top layer of powder will be dispersed first because it is the least dense. After the upper layer of powder is dispersed, the pressure on the next upper layer of powder decreases, and it is also dispersed. In this order, the dense powder in the tank body 1 is blown away by each branch pipe 22 from top to bottom, and restored to a fluffy state, so that it can be used in normal production.

[0025] In some embodiments, the laterite nickel ore acid leachate neutralizer powder storage tank further includes an anti-settling blower 3 located within the tank body 1 and capable of blowing air upward to maintain the powder's fluffy state. The powder can also slide down the side of the anti-settling blower 3 and be discharged from the discharge port. The anti-settling blower 3 is preferably located near the bottom of the tank body 1. This ensures that the powder within the tank body 1 is adequately agitated while also minimizing the amount of powder at the bottom of the anti-settling blower 3 to prevent the formation of dense clumps.

[0026] Since the dense powder is mainly produced above the anti-sinking fan 3 , each branch pipe 22 is located above the anti-sinking fan 3 .

[0027] In some embodiments, the laterite nickel ore acid leachate neutralizer powder storage tank further includes a feed pipe 4 connected to the feed port and a discharge pipe 5 connected to the discharge port.

[0028] In some embodiments, the high-pressure gas source 21 includes a main gas pipe 211 and an air pump 212. The branch pipes 22 are respectively connected to the main gas pipe 211. The gas outlet end of the air pump 212 is connected to the main gas pipe 211 to output pressurized gas into the main gas pipe 211, thereby spraying pressurized gas from each branch pipe 22 to blow away the dense powder.

[0029] In a preferred embodiment, the high-pressure gas source 21 further includes a high-pressure gas tank 213 and a main valve 214. The end of the main gas pipe 211 away from the branch pipes 22 is connected to the high-pressure gas tank 213. The outlet end of the air pump 212 is also connected to the high-pressure gas tank 213. The main valve 214 is located on the main gas pipe 211. The air pump 212 first pressurizes gas, such as air, into the high-pressure gas tank 213. The high-pressure gas tank 213 is used to store the high-pressure gas. When the powder needs to be restored to a fluffy state, the main valve 214 is opened, and the gas in the high-pressure gas tank 213 is ejected from each branch pipe 22, dispersing the powder from top to bottom.

[0030] In some embodiments, the outlet end of the branch pipe 22 is formed in a bell-mouth shape and is located on the central axis of the tank body 1, so as to evenly blow the powder in all directions.

[0031] In the above embodiment, each branch pipe 22 is synchronized to emit air. However, before the upper layer of powder is dispersed, the air injection effect of the lower branch pipes 22 is actually very poor. Therefore, in other embodiments, the recovery device 2 also includes multiple auxiliary valves 23, each of which is correspondingly arranged on the branch pipes 22 and located outside the tank body 1. When restoring the fluffy state of the powder, only the auxiliary valve 23 on the uppermost branch pipe 22 can be opened first. After the uppermost layer of powder is dispersed, the auxiliary valve 23 on the uppermost branch pipe 22 is closed, and the auxiliary valve 23 on the second-highest branch pipe 22 is opened. Opening the valves sequentially from top to bottom in this manner can concentrate the air and better disperse the powder.

[0032] In a preferred embodiment, the recovery device 2 also includes multiple first one-way valves 24, which are correspondingly arranged in each branch pipe 22 and located between the air outlet end and the auxiliary valve 23, so that the branch pipe 22 can only conduct one-way from the outside of the tank body 1 to the inside of the tank body 1, thereby preventing the powder from contacting the auxiliary valve 23 and blocking the auxiliary valve 23.

[0033] Referring to FIG. 2 , in some embodiments, the recovery device further includes a pulse gas supply mechanism 25, which includes a plurality of sub-gas tanks 251, an air inlet pipe 252, a plurality of air outlet pipes 253, and a plurality of sub-valves 254. The air inlet pipe 252 connects the air outlet of the air pump 212 with each of the sub-gas tanks 251. The air pump 212 supplies air to each of the sub-gas tanks 251 through each of the air inlet pipes 252. Each of the sub-gas tanks 251 stores high-pressure gas. In a preferred embodiment, the air outlet of the air pump 212 can be connected to a main air inlet pipe 255, and each of the air inlet pipes 252 is further connected to the main air inlet pipe 255. One end of each of the air outlet pipes 253 is connected to each of the sub-gas tanks 251, and the other end is connected to the main air pipe 211. Each of the sub-valves 254 is provided on the air outlet pipe 253.

[0034] By setting up multiple sub-gas tanks 251 instead of a single large gas storage tank, different sub-gas tanks 251 can be opened separately when supplying gas to each branch pipe 22 separately, ensuring that the gas pressure is constant during each gas supply, thereby improving the problem that the gas pressure of a single gas storage tank will gradually decrease when supplying gas.

[0035] In a preferred embodiment, since the sub-tanks 251 are interconnected at the inlet end, a second one-way valve 256 is provided in each inlet pipe 252, thereby limiting the flow of gas from the main inlet pipe 255 into the sub-tank 251. This prevents the gas in other sub-tanks 251 from flowing into the deflated sub-tank 251 after it has been deflated, thereby preventing the pressure in the other sub-tanks 251 from dropping.

[0036] Compared with the prior art, the laterite nickel ore acid leachate neutralizer powder storage tank provided by the present invention has a recovery device. A high-pressure air source blows air into the interior of the tank through multiple branch pipes. The branch pipes are spaced apart along the height direction. The powder in the upper layer has the lowest density and is blown away first. After the powder in the upper layer is blown away, the pressure on the powder in the lower layer is reduced, and it can also be blown away by the airflow blown out by the lower branch pipe, thereby restoring the powder in the entire storage tank to a fluffy state.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution, Characterized in that, It includes: A tank body and a recovery device. The top of the tank body has a feed inlet, and the bottom has a discharge outlet. The recovery device includes a high-pressure gas source and multiple branch pipes. The high-pressure gas source is located outside the tank body. The branch pipes penetrate the tank body and are hermetically connected to the tank body. The inlet end of the branch pipe communicates with the high-pressure gas source, and its outlet end faces upward and is located inside the tank body. The outlet ends of the multiple branch pipes are spaced apart along the height direction.

2. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 1, Characterized in that, It further includes an anti-settling fan. The anti-settling fan is located inside the tank body and can blow air upward. The branch pipes are located above the anti-settling fan.

3. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 1, Characterized in that, The high-pressure gas source includes a main air pipe and an air pump. The branch pipes are respectively communicated with the main air pipe. The outlet end of the air pump is communicated with the main air pipe to output pressurized gas into the main air pipe.

4. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 3, Characterized in that, The high-pressure gas source further includes a high-pressure gas tank and a main valve. One end of the main air pipe away from the branch pipes is communicated with the high-pressure gas tank. The outlet end of the air pump is communicated with the high-pressure gas tank. The main valve is arranged on the main air pipe.

5. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 3, Characterized in that, The recovery device further includes multiple sub-valves. The sub-valves are correspondingly arranged on the branch pipes and the sub-valves are located outside the tank body.

6. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 5, Characterized in that, The recovery device further includes multiple first one-way valves. The first one-way valves are correspondingly arranged in each branch pipe to enable the branch pipe to conduct unidirectionally only from outside the tank body to inside the tank body.

7. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 5, characterized in that the recovery device further includes a pulse gas supply mechanism. The pulse gas supply mechanism includes multiple sub-gas tanks, an inlet pipe, multiple outlet pipes and multiple sub-valves. The inlet pipe communicates the outlet end of the air pump and each sub-gas tank to supply gas to each sub-gas tank. One end of each outlet pipe is respectively communicated with each sub-gas tank, and the other end of each outlet pipe is communicated with the main air pipe. Each sub-valve is respectively arranged on the outlet pipe.

8. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 7, Characterized in that, The pulse gas supply mechanism further includes multiple second one-way valves. The second one-way valves are correspondingly arranged in each inlet pipe.

9. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 1, Characterized in that, The outlet end of the branch pipe forms a flared shape and is located on the central axis of the tank body.

10. The storage tank for neutralizing agent powder of laterite nickel ore acid leaching solution according to claim 1, Characterized in that, It further includes a feed pipe communicated with the feed inlet and a discharge pipe communicated with the discharge outlet.

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