Leaching device with hydrogen peroxide added from bottom

Abstract

The utility model discloses a leaching device with hydrogen peroxide added from the bottom, which comprises a leaching reaction tank, a stirring paddle is arranged in the leaching reaction tank, a hydrogen peroxide conduit penetrates through one side of the outer surface of the upper end of the leaching reaction tank, one end of the hydrogen peroxide conduit extends into the leaching reaction tank, and the other end of the hydrogen peroxide conduit extends into the leaching reaction tank. A sulfuric acid guide pipe, a 20% sodium carbonate solution guide pipe, a tap water guide pipe and a steam guide pipe sequentially penetrate through the other side of the outer surface of the upper end of the leaching reaction tank, and the bottom ends of the sulfuric acid guide pipe, the 20% sodium carbonate solution guide pipe, the tap water guide pipe and the steam guide pipe all penetrate through and extend into the leaching reaction tank; the device is different from a traditional device, hydrogen peroxide is added from the bottom of the leaching reaction tank, the hydrogen peroxide can fully react with mineral aggregate in the floating process, the use efficiency is greatly improved, the cost is saved, the product quality is improved, potential safety hazards of production are reduced, and good economic benefits and environmental benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wet metallurgy, in particular to a leaching device with hydrogen peroxide added to the bottom. Background Art

[0002] The existing hydrometallurgical technology for leaching nickel hydroxide and cobalt ore usually involves adding sulfuric acid to adjust the pH after the ore is slurried, leaching the nickel-cobalt sulfide ore with a reducing agent such as sodium sulfite at high temperature, then reducing the divalent iron with sodium chlorate or hydrogen peroxide, and then removing the iron with soda ash. This method actually has the following disadvantages:

[0003] 1. Since sodium chlorate must be used, a large amount of sewage will be generated in the entire process, and the subsequent treatment process of product dechlorination will consume a lot of energy and cost.

[0004] 2. Since sodium chlorate must be used, the storage of this chemical auxiliary material is dangerous and affects safe production.

[0005] 3. Since hydrogen peroxide must be used, this chemical auxiliary material only reacts in the upper layer of the leaching solution after being added to the leaching reaction tank, and cannot play its full role, the oxidation efficiency is low, and the auxiliary material is seriously wasted.

[0006] Therefore, a leaching device with hydrogen peroxide added at the bottom is proposed. Utility Model Content

[0007] The utility model aims to provide a leaching device with hydrogen peroxide added at the bottom. The device is different from the traditional device. Hydrogen peroxide is added from the bottom of the leaching reaction tank. The hydrogen peroxide can fully react with the mineral material during the floating process, which greatly improves the use efficiency, saves costs, improves product quality, reduces production safety hazards, has good economic and environmental benefits, and solves the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leaching device with hydrogen peroxide added to the bottom, comprising a leaching reaction tank, a stirring paddle is arranged inside the leaching reaction tank, a hydrogen peroxide conduit is penetrated through one side of the upper outer surface of the leaching reaction tank, and one end of the hydrogen peroxide conduit extends to the inside of the leaching reaction tank, a sulfuric acid conduit, a 20% soda ash solution conduit, a tap water conduit, and a steam conduit are respectively penetrated through the other side of the upper outer surface of the leaching reaction tank in sequence, and the bottom ends of the above four conduits are all penetrated and extended to the inside of the leaching reaction tank, the bottom end of the leaching reaction tank is fixedly connected to a leachate conduit, and the other end thereof is fixedly connected to a leachate outlet pump, and the other end of the hydrogen peroxide conduit is fixedly connected to a hydrogen peroxide peristaltic pumping device.

[0009] By adopting the above technical solution, the device is different from the traditional device. Hydrogen peroxide is added from the bottom of the leaching reaction tank. The hydrogen peroxide can fully react with the mineral material during the floating process, which greatly improves the utilization efficiency, saves costs, improves product quality, reduces production safety hazards, and has good economic and environmental benefits.

[0010] Preferably, the hydrogen peroxide peristaltic pumping device includes a hydrogen peroxide storage tank, and the bottom end of the hydrogen peroxide storage tank is connected to a hydrogen peroxide peristaltic pump through a pipeline, the side of the hydrogen peroxide peristaltic pump away from the pipeline is also connected to a one-way check valve through a pipeline, and the other end of the hydrogen peroxide conduit is fixedly connected to the one-way check valve.

[0011] By adopting the above technical solution, the hydrogen peroxide peristaltic pumping device is used to introduce the hydrogen peroxide storage tank into the leaching reaction tank through the hydrogen peroxide conduit.

[0012] Preferably, the top end of the stirring paddle is fixedly connected with a transmission rod, which passes through and extends to the top end of the leaching reaction tank and is connected to an external driving device during operation.

[0013] By adopting the above technical solution, the driving rod is connected to the external motor driving device to force the stirring paddle to rotate to stir the liquid in the leaching reaction tank.

[0014] Preferably, the stirring paddle and the transmission rod are made of corrosion-resistant metal material.

[0015] By adopting the above technical solution, the corrosion damage rate is reduced and the service life of the device is extended.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The device is different from the traditional device. Hydrogen peroxide is added from the bottom of the leaching reaction tank. The hydrogen peroxide can fully react with the mineral material during the floating process, which greatly improves the use efficiency, saves costs, improves product quality, and reduces production safety hazards. The method of using hydrogen peroxide in the present invention is a bottom addition method, which can greatly improve the reaction efficiency of hydrogen peroxide and avoid the waste of auxiliary materials caused by adding hydrogen peroxide at the top. The present invention uses hydrogen peroxide to add leaching mineral materials at the bottom, avoids the use of expensive sodium sulfite and sodium chlorate, and reduces production costs. It has good economic and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is the overall structural view of the utility model.

[0020] Description of reference numerals:

[0021] 1. Leaching reaction tank; 2. Hydrogen peroxide peristaltic pumping device; 3. Sulfuric acid conduit; 4. 20% soda ash solution conduit; 5. Tap water conduit; 6. Steam conduit; 7. Stirring paddle; 8. Leachate conduit; 9. Leachate outlet pump; 10. Hydrogen peroxide storage tank; 11. Hydrogen peroxide conduit; 12. One-way check valve; 13. Hydrogen peroxide peristaltic pump. DETAILED DESCRIPTION

[0022] The following will combine 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 of 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.

[0023] See also Figure 1 , the utility model provides a technical solution:

[0024] like Figure 1 As shown, a leaching device with hydrogen peroxide added to the bottom comprises a leaching reaction tank 1, wherein a stirring paddle 7 is arranged inside the leaching reaction tank 1, and a hydrogen peroxide conduit 11 is penetrated through one side of the upper outer surface of the leaching reaction tank 1, and one end of the hydrogen peroxide conduit 11 extends to the inside of the leaching reaction tank 1, and a sulfuric acid conduit 3, a 20% soda ash solution conduit 4, a tap water conduit 5, and a steam conduit 6 are respectively penetrated through the other side of the upper outer surface of the leaching reaction tank 1 in sequence, and the bottom ends of the above four conduits are all penetrated and extended to the inside of the leaching reaction tank 1, the bottom end of the leaching reaction tank 1 is fixedly connected to a leachate conduit 8, and the other end thereof is fixedly connected to a leachate outlet pump 9, and the other end of the hydrogen peroxide conduit 11 is fixedly connected to a hydrogen peroxide peristaltic pumping device 2.

[0025] By adopting the above technical solution, the device is different from the traditional device. Hydrogen peroxide is added from the bottom of the leaching reaction tank 1. The hydrogen peroxide can fully react with the mineral material during the floating process, which greatly improves the utilization efficiency, saves costs, improves product quality, reduces production safety hazards, and has good economic and environmental benefits.

[0026] Specifically, Figure 1As shown, the hydrogen peroxide peristaltic pumping device 2 includes a hydrogen peroxide storage tank 10, and the bottom end of the hydrogen peroxide storage tank 10 is connected to a hydrogen peroxide peristaltic pump 13 through a pipeline, and the side of the hydrogen peroxide peristaltic pump 13 away from the pipeline is also connected to a one-way check valve 12 through a pipeline, and the other end of the hydrogen peroxide conduit 11 is fixedly connected to the one-way check valve 12.

[0027] By adopting the above technical solution, the hydrogen peroxide peristaltic pumping device 2 is used to introduce the hydrogen peroxide storage tank 10 into the leaching reaction tank 1 through the hydrogen peroxide conduit 11 .

[0028] Specifically, Figure 1 As shown, the top of the stirring paddle 7 is fixedly connected with a transmission rod, which passes through and extends to the top of the leaching reaction tank 1 and is connected to an external driving device during operation.

[0029] By adopting the above technical solution, the driving rod is connected to an external motor driving device to force the stirring paddle 7 to rotate to stir the liquid in the leaching reaction tank 1 .

[0030] Specifically, Figure 1 As shown, the stirring blade 7 and the transmission rod are made of corrosion-resistant metal material.

[0031] By adopting the above technical solution, the corrosion damage rate is reduced and the service life of the device is extended.

[0032] Working principle:

[0033] The device is different from the traditional device. Hydrogen peroxide is added from the bottom of the leaching reaction tank 1. The hydrogen peroxide can fully react with the mineral material during the floating process, which greatly improves the use efficiency, saves costs, improves product quality, and reduces production safety hazards. The method of using hydrogen peroxide in the present invention is a bottom addition method, which can greatly improve the reaction efficiency of hydrogen peroxide and avoid the waste of auxiliary materials caused by adding hydrogen peroxide at the top. The present invention uses hydrogen peroxide to add leaching mineral materials at the bottom, avoids the use of expensive sodium sulfite and sodium chlorate, and reduces production costs. It has good economic and environmental benefits.

[0034] Directions:

[0035] Before leaching begins, the stirring paddle 7 in the middle of the leaching reaction tank 1 is turned on, and the stirring rod is driven by the transmission rod and the external driving device to rotate. The sulfuric acid conduit 3 and the tap water conduit 5 are used to introduce an appropriate amount of sulfuric acid and tap water into the leaching reaction tank 1. After stirring evenly, bottom water with a certain acidity is formed. Using a driving crane, an appropriate amount of ton bags of ore to be leached is added to the leaching reaction tank 1, and the slurry is evenly formed. Sulfuric acid is continued to be added to the leaching reaction tank 1 and adjusted to an appropriate pH. The steam conduit 6 is turned on to raise the temperature in the leaching reaction tank 1 to an appropriate temperature. The pumping speed of the hydrogen peroxide peristaltic pump 13 is adjusted to an appropriate value, and hydrogen peroxide is pumped into the leaching reaction tank 1 along the hydrogen peroxide conduit 11. Due to the hydrogen peroxide conduit 11, the hydrogen peroxide is pumped into the leaching reaction tank 1. It extends straight to the bottom of the leaching reaction tank 1. After the hydrogen peroxide is pumped out from the conduit, it is evenly dispersed at the bottom of the leaching reaction tank 1 under the action of the centrifugal force of the stirring paddle 7, and then slowly rises to above the liquid level in the tank body. In the rising process, it fully reacts with the leachate. The hydrogen peroxide introduced into the leaching reaction tank 1 forms a large number of bubbles at the moment of reacting with the leachate, resulting in a reflux phenomenon in the hydrogen peroxide conduit 11. At this time, the one-way check valve 12 plays a role, preventing the mixed solution of hydrogen peroxide and leachate from flowing back to the hydrogen peroxide peristaltic pump 13. Under the condition of maintaining the temperature and acidity in the leaching reaction tank 1, the leaching reaches the end point. At this time, due to the participation of hydrogen peroxide in the reaction, the iron ions in the leachate are all Fe3+. At this time, the soda solution can be directly introduced into the leaching reaction tank 1 through the 20% soda solution conduit 4 to adjust the pH value to remove iron. Finally, the qualified leachate required for production is obtained. The external drive device of the device can use a drive motor with a model of Y112M.

[0036] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the utility model is only used for the technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and in line with the technical solution of the utility model. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the utility model.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A leaching device with hydrogen peroxide added to the bottom, comprising a leaching reaction tank (1), characterized in that: The leaching reaction tank (1) is provided with a stirring paddle (7) inside, and a hydrogen peroxide conduit (11) is penetrated through one side of the upper outer surface of the leaching reaction tank (1), and one end of the hydrogen peroxide conduit (11) extends to the inside of the leaching reaction tank (1), and a sulfuric acid conduit (3), a 20% soda ash solution conduit (4), a tap water conduit (5), and a steam conduit (6) are respectively penetrated through the other side of the upper outer surface of the leaching reaction tank (1), and the bottom ends of the above four conduits all penetrate and extend to the inside of the leaching reaction tank (1), the bottom end of the leaching reaction tank (1) is fixedly connected to a leachate conduit (8), and the other end thereof is fixedly connected to a leachate outlet pump (9), and the other end of the hydrogen peroxide conduit (11) is fixedly connected to a hydrogen peroxide peristaltic pumping device (2).

2. A leaching device for adding hydrogen peroxide at the bottom according to claim 1, characterized in that: The hydrogen peroxide peristaltic pumping device (2) comprises a hydrogen peroxide storage tank (10), and the bottom end of the hydrogen peroxide storage tank (10) is connected to a hydrogen peroxide peristaltic pump (13) via a pipeline, and the side of the hydrogen peroxide peristaltic pump (13) away from the pipeline is also connected to a one-way check valve (12) via a pipeline, and the other end of the hydrogen peroxide conduit (11) is fixedly connected to the one-way check valve (12).

3. A leaching device for adding hydrogen peroxide at the bottom according to claim 1, characterized in that: The top end of the stirring paddle (7) is fixedly connected to a transmission rod, which penetrates and extends to the top end of the leaching reaction tank (1) and is connected to an external driving device during operation.

4. A leaching device for adding hydrogen peroxide at the bottom according to claim 3, characterized in that: The stirring paddle (7) and the transmission rod are made of corrosion-resistant metal material.

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