阅读说明：本技术 一种加压浸出设备 (Pressure leaching equipment ) 是由 司鹏 张斐 茅陆荣 于 2021-07-29 设计创作，主要内容包括：本发明属于湿法冶金技术领域,公开了一种加压浸出设备。该加压浸出设备包括加压釜、间隔板和搅拌组件,加压釜包括釜体,所述釜体内设有防腐层,所述防腐层包括由外到内依次设置的隔离层和防磨层,所述隔离层为金属材质,所述防磨层为非金属材质,多个所述间隔板相互平行地设置在所述加压釜内,以将所述加压釜分割出多个浸出室,搅拌组件设于所述浸出室内,所述搅拌组件包括搅拌轴和搅拌桨,所述搅拌轴由所述釜体的顶部插入所述浸出室内,所述搅拌桨设于所述搅拌轴上,所述搅拌轴为金属材质,所述搅拌桨非金属材质。本发明的加压浸出设备能够改善加压浸出设备内壁和搅拌器的耐腐蚀性,提高浸出速率。(The invention belongs to the technical field of wet metallurgy and discloses pressure leaching equipment. This equipment is leached in pressurization includes pressurized kettle, space bar and stirring subassembly, and pressurized kettle includes the cauldron body, the internal anticorrosive coating that is equipped with of cauldron, the anticorrosive coating includes by outer isolation layer and the abrasionproof layer that sets gradually to the interior, the isolation layer is the metal material, the abrasionproof layer is non-metal material, and is a plurality of the space bar sets up in parallel each other in the pressurized kettle, in order to incite somebody to action pressurized kettle cuts apart a plurality of rooms of leaching out, and the stirring subassembly is located leach indoorly, the stirring subassembly includes (mixing) shaft and stirring rake, the (mixing) shaft by the top of the cauldron body is inserted leach indoorly, the stirring rake is located on the (mixing) shaft, the (mixing) shaft is the metal material, the non-metal material of stirring rake. The pressure leaching equipment can improve the corrosion resistance of the inner wall of the pressure leaching equipment and the stirrer, and improve the leaching rate.)

1. A pressure leaching apparatus, comprising:

the pressurized kettle (1) comprises a kettle body (11), wherein an anticorrosive layer is arranged on the inner wall of the kettle body (11), the anticorrosive layer comprises an isolating layer (12) and an anti-abrasion layer (13) which are sequentially arranged from outside to inside, the isolating layer (12) is made of metal materials, and the anti-abrasion layer (13) is made of nonmetal materials;

the partition plates (2) are arranged in the autoclave (1) in parallel to divide the autoclave (1) into a plurality of leaching chambers;

stirring subassembly (3), locate leach indoorly, stirring subassembly (3) include (mixing) shaft (31) and stirring rake (32), (mixing) shaft (31) by the top of the cauldron body (11) is inserted leach indoorly, stirring rake (32) are located on (mixing) shaft (31), (mixing) shaft (31) are the metal material, stirring rake (32) non-metallic material.

2. The pressure leaching apparatus according to claim 1, wherein the tank (11) is made of carbon steel.

3. The pressure leaching apparatus according to claim 1, wherein the barrier layer (12) is made of super duplex steel, super stainless steel, super austenitic stainless steel or nickel based alloy.

4. The pressure leaching apparatus according to claim 1, wherein the wear layer (13) is an acid-resistant brick.

5. The pressure leaching apparatus according to claim 1, wherein the vessel (11) is joined to the insulating layer (12) by explosive welding, and the wear layer (13) is adhesively secured to the insulating layer (12).

6. The pressure leaching apparatus according to claim 5, wherein the wear layer (13) is cemented to the isolation layer (12) by mastic.

7. The pressure leaching apparatus according to claim 1, wherein the stirring shaft (31) is made of super duplex steel, super stainless steel, super austenitic stainless steel or nickel based alloy.

8. The pressure leaching apparatus according to claim 1, wherein the paddle (32) is made of fibre toughened silicon carbide.

9. The pressure leaching apparatus according to claim 1, wherein the stirring paddle (32) is removably connected to the stirring shaft (31).

10. The pressure leaching apparatus according to claim 1, wherein the top of the kettle body (11) is provided with a feed inlet (4), the feed inlet (4) is connected with a feed pipe (8), the feed pipe (8) extends to the bottom of the kettle body (11), and the feed pipe (8) is connected with the partition plate (2) through a fixing rod.

Technical Field

The invention relates to the technical field of wet metallurgy, in particular to pressure leaching equipment.

Background

With the rapid development of new energy industries, the loading amount of power batteries is increasing continuously, however, the service life of the power batteries is often only a few years, and how to dispose the power batteries after being scrapped becomes a key for the sustainable development of the new energy automobile industry. The ternary power battery has the performance advantages of high energy density and good cycle performance, and gradually becomes the mainstream of the power battery, and a large amount of valuable metals such as nickel, cobalt, manganese and the like contained in the anode material of the ternary power battery have great recovery value.

In the prior art, an atmospheric pressure leaching tank is generally adopted to recycle the anode material of the ternary power battery, the intermittent operation is adopted, the leaching time is long, and the leaching rate is low, so that the pressure leaching becomes an effective means for improving the leaching speed and the leaching rate.

Disclosure of Invention

The invention aims to provide a pressure leaching device, which is used for solving the problems that the inner wall and a stirrer of the pressure leaching device are damaged due to corrosion, the leaching efficiency is reduced, and even the device is stopped in the process of recycling batteries.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pressure leaching apparatus, comprising:

the pressurized kettle comprises a kettle body, wherein an anticorrosive layer is arranged on the inner wall of the kettle body, the anticorrosive layer comprises an isolating layer and an anti-abrasion layer which are sequentially arranged from outside to inside, the isolating layer is made of metal materials, and the anti-abrasion layer is made of nonmetal materials;

the partition plates are arranged in the autoclave in parallel to divide the autoclave into a plurality of leaching chambers;

the stirring subassembly is located leach indoor, the stirring subassembly includes (mixing) shaft and stirring rake, the (mixing) shaft by the top of the cauldron body is inserted leach indoor, the stirring rake is located on the (mixing) shaft, the (mixing) shaft is the metal material, the nonmetal material of stirring rake.

Preferably, the kettle body is made of carbon steel.

Preferably, the material of the isolating layer is super duplex steel, super stainless steel, super austenitic stainless steel or nickel-based alloy.

Preferably, the wear layer is an acid-resistant brick.

Preferably, the kettle body is connected with the isolation layer through explosive welding, and the wear-resistant layer is fixedly bonded with the isolation layer.

Preferably, the wear-resistant layer is bonded with the isolation layer through cement.

Preferably, the material of the stirring shaft is super duplex steel, super stainless steel, super austenitic stainless steel or nickel-based alloy.

Preferably, the material of stirring rake is fibre toughened carborundum.

Preferably, the stirring paddle is detachably connected with the stirring shaft.

Preferably, the top of the cauldron body is equipped with the feed inlet, the feed inlet is connected with the inlet pipe, the inlet pipe extends to the bottom of the cauldron body, the inlet pipe with the space bar passes through the dead lever and connects.

The invention has the beneficial effects that: according to the pressure leaching equipment provided by the invention, the inner wall of the kettle body of the pressure kettle is provided with the anticorrosive layer, the anticorrosive layer comprises the isolating layer and the anti-abrasion layer which are sequentially arranged from outside to inside, the isolating layer is made of metal, the anti-abrasion layer is made of nonmetal, the isolating layer made of metal can protect the kettle body from being corroded by acid leaching liquid containing fluorine, the anti-abrasion layer made of nonmetal can protect the isolating layer from being abraded by materials, and the double arrangement of the isolating layer and the anti-abrasion layer can effectively avoid the inner wall of the kettle body from being corroded in the process of recovering valuable metals in a power battery; the kettle body is divided into a plurality of leaching chambers by arranging the partition plates in the kettle body, so that the leaching efficiency is improved; establish the (mixing) shaft into metal material, the stirring rake is established to non-metal material, and metal material's (mixing) shaft has rigidity and wearability, and the reliability is high in the use, and non-metal material's stirring rake can avoid leaching the in-process because of being corroded and damaging in the pressurization, has improved the leaching rate.

Drawings

FIG. 1 is a schematic diagram of the overall configuration of a pressure leaching apparatus provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a stirring assembly provided in the embodiment of the present invention.

In the figure:

1. a pressurized kettle; 11. a kettle body; 12. an isolation layer; 13. an anti-wear layer; 2. a partition plate; 3. a stirring assembly; 31. a stirring shaft; 32. a stirring paddle; 33. a motor; 4. a feed inlet; 5. a discharge outlet; 6. a mounting seat; 7. a manhole; 8. and (4) feeding a pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The present embodiment provides a pressure leaching apparatus, as shown in fig. 1-3, comprising an autoclave 1, a partition plate 2, and a stirring assembly 3. The autoclave 1 comprises an autoclave body 11, an anticorrosive layer is arranged on the inner wall of the autoclave body 11, the anticorrosive layer comprises an isolation layer 12 and an anti-abrasion layer 13 which are sequentially arranged from outside to inside, the isolation layer 12 is made of metal materials, and the anti-abrasion layer 13 is made of nonmetal materials; a plurality of partition plates 2 are arranged in the autoclave 1 in parallel to divide the autoclave 1 into a plurality of leaching chambers; stirring subassembly 3 is located and is leached indoor, and stirring subassembly 3 includes (mixing) shaft 31 and stirring rake 32, and in the (mixing) shaft 31 was leached by the top of the cauldron body 11 insertion, stirring rake 32 was located on (mixing) shaft 31, and (mixing) shaft 31 is the metal material, and stirring rake 32 is non-metallic.

According to the pressure leaching equipment provided by the invention, an anticorrosive layer is arranged on the inner wall of the kettle body 11 of the pressure kettle 1, the anticorrosive layer comprises an isolating layer 12 and an anti-abrasion layer 13 which are sequentially arranged from outside to inside, the isolating layer 12 is made of metal, the anti-abrasion layer 13 is made of nonmetal, the isolating layer 12 made of metal can protect the kettle body 11 from being corroded by fluorine-containing acid leaching liquid, the anti-abrasion layer 13 made of nonmetal can protect the isolating layer 12 from being abraded by materials, and the double arrangement of the isolating layer 12 and the anti-abrasion layer 13 can effectively prevent the inner wall of the kettle body 11 from being corroded in the process of recovering valuable metals in a power battery; the partition plates 2 are arranged in the kettle body 11, so that the kettle body 11 is divided into a plurality of leaching chambers, and the leaching efficiency is improved; the stirring shaft 31 is made of metal, the stirring paddle 32 is made of nonmetal, the stirring shaft 31 made of metal has rigidity and wear resistance, the reliability is high in the using process, the stirring paddle 32 made of nonmetal can avoid being damaged due to corrosion in the pressure leaching process, and the leaching rate is improved.

Further, the kettle body 11 is made of carbon steel. Carbon steel is adopted as the base body and the pressure bearing layer of the kettle body 11, so that the equipment can be used under the operation pressure of 0.2MPa-2.5MPa, and the pressure resistance and the safety performance of the equipment are improved.

Further, the bottom of each partition plate 2 is provided with a through hole. Through set up the through-hole in the bottom of division board 2, can leach each room intercommunication each other, be favorable to the abundant flow of the material of each room bottom of leaching.

Preferably, the material of the barrier layer 12 is super duplex steel, super stainless steel, super austenitic stainless steel or nickel based alloy. The isolation layer 12 made of the above materials can protect the kettle body 11 from being corroded by the acid leaching solution containing fluorine ions.

Preferably, the wear layer 13 is an acid-resistant brick. The anti-wear layer 13 is used as a first protection barrier of the kettle body 11, the anti-wear layer 13 is made of acid-resistant bricks, so that the isolation layer 12 used as a second protection barrier can be protected from being abraded by materials, meanwhile, the acid-resistant bricks can be used as a heat insulation layer to generate temperature gradient, the temperature of the isolation layer 12 is reduced to be below 100 ℃, and the acid-resistant and fluorine-resistant anti-corrosion effects of the isolation layer 12 are fully exerted.

It should be noted that, in the process of preparing the isolation layer 12 and the wear-resistant layer 13, the autoclave body 11 and the isolation layer 12 are joined by explosive welding, and the wear-resistant layer 13 is fixed to the isolation layer 12 by adhesion. By adopting the explosive welding process, the kettle body 11 and the isolation layer 12 can be rapidly combined into a whole, and the bonding strength of the kettle body 11 and the isolation layer 12 is high. The abrasion-proof layer 13 and the isolation layer 12 are bonded and fixed, and the operation is simple and convenient. Preferably, the wear layer 13 is bonded to the isolation layer 12 by cement. Specifically, the cement may be furan resin cement, epoxy resin cement or water glass cement, and is not limited in this embodiment. The process for cementing the daub is simple, the construction adaptability is good, and the cost is saved.

Preferably, the material of the stirring shaft 31 is super duplex steel, super stainless steel, super austenitic stainless steel or nickel-based alloy, and the stirring shaft 31 made of metal has certain rigidity, higher strength and better wear resistance, so that the reliability in the assembling or using process is ensured. Further, the material of the stirring paddle 32 is fiber-toughened silicon carbide. The stirring paddle 32 is made of fiber toughened silicon carbide, so that the stirring paddle 32 not only has the strong corrosion resistance of silicon carbide, but also has the toughness and thermal shock resistance close to those of metal, and the stirring paddle 32 can be used for a long time in a fluorine-containing acidic environment at the temperature of 100-250 ℃.

Further, the stirring paddle 32 is detachably connected to the stirring shaft 31. Through setting up stirring rake 32 and (mixing) shaft 31 to be connected for dismantling, be convenient for change stirring rake 32. In addition, stirring subassembly 3 still includes motor 33, and motor 33 installs in the outside of the cauldron body 11, and motor 33 drive (mixing) shaft 31 rotates, and (mixing) shaft 31 drives stirring rake 32 rotatory to the realization is to leaching indoor automatic, the high-efficient stirring of material, makes the material intensive mixing, improves and leaches efficiency.

Further, the top of the cauldron body 11 is equipped with feed inlet 4, and feed inlet 4 is connected with inlet pipe 8, and inlet pipe 8 extends to the bottom of the cauldron body 11, and inlet pipe 8 passes through the dead lever with space bar 2 and is connected. In particular, each leaching chamber is provided with a feed inlet 4, the feed inlet 4 being used for adding a main slurry or an auxiliary slurry, such as a catalyst for adjusting pressure, concentration, chemical reaction, and the like. In addition, the kettle body 11 is also provided with a discharge opening 5. In particular, each leaching chamber is provided with a discharge opening 5, which discharge opening 5 allows solid material to be discharged therefrom.

Further, be equipped with manhole 7 on the cauldron body 11, be equipped with the apron on the manhole 7, be equipped with the handle on the apron, the handle passes through hinged joint with the apron, through setting up manhole 7, is convenient for stir the installation and the maintenance of subassembly 3. Meanwhile, the installation seat 6 is arranged on the outer side of the bottom of the kettle body 11, so that the installation and the fixation of the pressure leaching equipment are facilitated.

The specific working process of the pressure leaching equipment provided by the invention is as follows:

the pretreated slurry enters each leaching chamber of the autoclave 1 through the feed inlet 4 and the feed pipe 8 of the autoclave body 11 in sequence, after reaching a preset liquid level, the motor 33 in the stirring assembly 3 is started, the motor 33 drives the stirring shaft 31 to rotate, the stirring shaft 31 drives the stirring paddle 32 to rotate, the stirring paddle 32 mixes the slurry to enable the slurry to be suspended in the leaching chamber, at the moment, the pretreated slurry is continuously added from the feed inlet 4, and after being stirred for a period of time, a finished product is discharged through the discharge outlet 5 and enters the next-stage process link. Wherein, the finished product is continuously output from the discharge opening 5 while the pretreated slurry is added into the feed opening 4.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.