阅读说明：本技术 一种铝电解槽大修渣的湿法粉磨系统 (Wet grinding system for aluminum electrolysis cell overhaul slag ) 是由 陈兴华 覃武林 严育红 周杰强 马智敏 王玉才 刘国红 于 2019-10-31 设计创作，主要内容包括：本发明涉及电解铝废弃物处理设备技术领域,具体为一种铝电解槽大修渣的湿法粉磨系统,包括基座,基座上设有湿式球磨机和负压机,基座固定连接支柱,支柱固定连接管箱,管箱左侧壁固定连接衬套,湿式球磨机的出口端法兰连接圆直筒,圆直筒伸入管箱并与衬套旋转配合,管箱右侧壁固定连接直硬管,直硬管内设有滤网,直硬管固定连接负压软管道,负压软管道与负压机的进口端固定连接,负压机的出口端与尾气回收管道固定连接。有益效果为：本发明采用湿式球磨机对铝电解大修渣进行湿法粉磨,有效避免了粉磨过程中的粉尘危害,并通过负压机在湿式球磨机的一端形成负压,避免了有毒气体在粉磨设备腔体的富集。(The invention relates to the technical field of electrolytic aluminum waste treatment equipment, in particular to a wet grinding system for overhaul residues of an aluminum electrolytic cell, which comprises a base, wherein a wet ball mill and a negative pressure machine are arranged on the base, the base is fixedly connected with a pillar, the pillar is fixedly connected with a tube box, the left side wall of the tube box is fixedly connected with a bushing, the outlet end of the wet ball mill is connected with a straight cylinder through a flange, the straight cylinder extends into the tube box and is in rotary fit with the bushing, the right side wall of the tube box is fixedly connected with a straight hard tube, a filter screen is arranged in the straight hard tube, the straight hard tube is fixedly connected with a negative pressure hose, the negative pressure hose is fixedly connected with the inlet end of the negative. The beneficial effects are that: the wet ball mill is adopted to carry out wet grinding on the aluminum electrolysis overhaul slag, so that the dust hazard in the grinding process is effectively avoided, and the negative pressure is formed at one end of the wet ball mill through the negative pressure machine, so that the enrichment of toxic gas in the grinding equipment cavity is avoided.)

1. The utility model provides a wet process grinding system of aluminium cell overhaul sediment, includes base (1), be equipped with wet ball mill (2) and negative pressure machine (3) on base (1), its characterized in that: base (1) fixed connection pillar (4), pillar (4) fixed connection pipe case (5), pipe case (5) left side wall fixed connection bush (6), the straight section of thick bamboo of exit end flange joint circle (7) of wet ball mill (2), straight section of thick bamboo (7) stretch into pipe case (5) and with bush (6) rotation fit, the straight hard tube of pipe case (5) right side wall fixed connection (8), be equipped with filter screen (9) in straight hard tube (8), straight hard tube (8) fixed connection negative pressure hose way (10), the entrance point fixed connection of negative pressure hose way (10) and negative pressure machine (3), the exit end and tail gas recovery pipeline (11) fixed connection of negative pressure machine (3).

2. The wet grinding system for the aluminum electrolysis cell overhaul residues as claimed in claim 1, wherein: the negative pressure machine (3) adopts a centrifugal blower, and the maximum wind pressure of the negative pressure machine (3) is 110 kPa.

3. The wet grinding system for the aluminum electrolysis cell overhaul residues as claimed in claim 1, wherein: the bottom of the pipe box (5) is fixedly connected with a discharge pipe (12), an electric adjusting valve (13) is arranged on the discharge pipe (12), and the electric adjusting valve (13) adopts a D943H-16C stainless steel electric flange hard sealing butterfly valve.

4. The wet grinding system for the aluminum electrolysis cell overhaul residues as claimed in claim 1, wherein: and a gas sensor (14) is arranged at the top of the channel box (5), and the gas sensor (14) comprises ammonia gas sensors TGS2444 and KG9701A methane sensors.

5. The wet grinding system for the aluminum electrolysis cell overhaul residues as claimed in claim 1, wherein: the two ends of the straight hard pipe (8) are provided with external threads, and the two ends of the straight hard pipe (8) are respectively in threaded connection with the pipe box (5) and the negative pressure hose pipe (10).

6. The wet grinding system for the aluminum electrolysis cell overhaul residues as claimed in claim 1, wherein: the filter screen (9) is woven by stainless steel wire plain weave and is formed, and the welding of filter screen (9) periphery edge has the ring frame, ring frame and straight hard tube (8) threaded connection, the aperture of filter screen (9) is not less than 75 mu m.

Technical Field

The invention relates to the technical field of electrolytic aluminum waste treatment equipment, in particular to a wet grinding system for overhaul residues of an aluminum electrolytic cell.

Background

The aluminum electrolysis cell overhaul slag is generated in the regular maintenance and material replacement of the aluminum electrolysis cell, and the main components of the aluminum electrolysis cell overhaul slag are waste cathode (anode) carbon blocks, refractory materials and anti-seepage materials, and the aluminum electrolysis cell overhaul slag is classified as I-type dangerous waste because the aluminum electrolysis cell overhaul slag contains soluble fluoride and a small amount of cyanide.

Disclosure of Invention

The invention aims to provide a wet grinding system for aluminum cell overhaul residues, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wet process grinding system of sediment is repaiied greatly to aluminium cell, includes the base, be equipped with wet ball mill and negative pressure machine on the base, base fixed connection pillar, pillar fixed connection pipe case, pipe case left side wall fixed connection bush, the straight section of thick bamboo of exit end flange joint circle of wet ball mill, straight section of thick bamboo stretch into pipe case and with the rotatory cooperation of bush, the straight hard tube of pipe case right side wall fixed connection, be equipped with the filter screen in the straight hard tube, straight hard tube fixed connection negative pressure hose way, negative pressure hose way and negative pressure machine's entrance point fixed connection, the exit end and the tail gas recovery pipeline fixed connection of negative pressure machine.

Preferably, the negative pressure machine adopts a centrifugal blower, and the maximum air pressure of the negative pressure machine is 110 kPa.

Preferably, the bottom of the pipe box is fixedly connected with a discharge pipe, an electric regulating valve is arranged on the discharge pipe, and the electric regulating valve adopts a D943H-16C stainless steel electric flange hard sealing butterfly valve.

Preferably, the top of the pipe box is provided with gas sensors, and the gas sensors comprise ammonia gas sensors TGS2444 and KG9701A methane sensors.

Preferably, both ends of the straight hard pipe are provided with external threads, and both ends of the straight hard pipe are respectively in threaded connection with the pipe box and the negative pressure hose line.

Preferably, the filter screen is woven by stainless steel wire plain weave and forms, and the welding of filter screen periphery edge has the ring frame, ring frame and straight hard tube threaded connection, the aperture of filter screen is not less than 75 mu m.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the wet ball mill is adopted to carry out wet grinding on the aluminum electrolysis overhaul slag, so that the dust hazard in the grinding process is effectively avoided, negative pressure is formed at one end of the wet ball mill through the negative pressure machine, harmful gas is rapidly extracted, and the enrichment of toxic gas in the grinding equipment cavity is avoided;

2. the filter screen can be fine isolated overhaul sediment powder, avoids overhaul sediment powder to get into the negative pressure hose way, reduces follow-up toxic gas recovery processing degree of difficulty to because the both ends of straight hard tube respectively with case and negative pressure hose way threaded connection, make straight hard tube easily dismantle, the convenient filter screen of changing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the tube box structure of the present invention.

In the figure: the device comprises a base 1, a wet ball mill 2, a negative pressure machine 3, a support 4, a tube box 5, a lining 6, a round straight cylinder 7, a straight hard tube 8, a filter screen 9, a negative pressure hose pipeline 10, a tail gas recovery pipeline 11, a discharge pipe 12, an electric adjusting valve 13 and a gas sensor 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: a wet grinding system for aluminum cell overhaul slag comprises a base 1, wherein a wet ball mill 2 and a negative pressure machine 3 are arranged on the base 1. The aluminum electrolysis cell overhaul slag enters the grinding cavity through the feeding end of the wet ball mill 2, a water replenishing valve is arranged near the feeding end of the wet ball mill 2, the water replenishing quantity can be controlled, the concentration of grinding slurry in the wet ball mill 2 is adjusted to be 30% -60%, the water replenishing is utilized to adsorb dust, and the dust hazard of the wet ball mill 2 is avoided. During the grinding process, the overhaul slag of the aluminum electrolytic cell reacts with water to release toxic gases such as ammonia gas, methane and the like, and is enriched in the grinding cavity. The base 1 is fixedly connected with a support column 4, the support column 4 is fixedly connected with a tube box 5, the left side wall of the tube box 5 is welded with the outer wall of a lining 6, an outlet end flange of the wet ball mill 2 is connected with a round straight cylinder 7, and the round straight cylinder 7 extends into the tube box 5 and is in rotating fit with the lining 6.

After being screened by a sieve plate of a grinding cavity in the wet ball mill 2, the aluminum electrolytic cell overhaul slag powder which meets the specification enters the round straight cylinder 7, the side wall of the round straight cylinder 7 is provided with a through hole, and the aluminum electrolytic cell overhaul slag powder rotates along with the round straight cylinder 7 and enters the pipe box 5 through the through hole. Filter screen 9 is woven by the stainless steel wire plain weave and is formed, the welding of filter screen 9 periphery edge has the ring frame, ring frame and straight hard tube 8 threaded connection, the straight hard tube 8 of 5 right side walls fixed connection of pipe case, be equipped with filter screen 9 in the straight hard tube 8, straight hard tube 8 fixed connection negative pressure hose way 10, the aperture of filter screen 9 is 75 mu m, the isolated overhaul sediment powder that can be fine, avoid overhaul sediment powder to get into negative pressure hose way 10, reduce the follow-up toxic gas recovery processing degree of difficulty. And, because the both ends of straight hard tube 8 all are equipped with the external screw thread, the both ends of straight hard tube 8 respectively with tub case 5 and negative pressure hose line 10 threaded connection for straight hard tube 8 is easily dismantled, conveniently changes filter screen 9.

The negative pressure hose 10 is fixedly connected with the inlet end of the negative pressure machine 3, the negative pressure machine 3 adopts a centrifugal blower, and the maximum air pressure of the negative pressure machine 3 is 110 kPa. The outlet end of the negative pressure machine 3 is fixedly connected with a tail gas recovery pipeline 11. And (3) starting the negative pressure machine (3), wherein the negative pressure machine (3) forms a certain negative pressure in the tube box (5) to quickly extract toxic gas in the tube box (5), so that the concentration of the toxic gas in the grinding cavity of the wet ball mill (2) is lower than a preset threshold value.

The bottom of the pipe box 5 is fixedly connected with a discharge pipe 12, the discharge pipe 12 is provided with an electric regulating valve 13, the electric regulating valve 13 adopts a D943H-16C stainless steel electric flange hard sealing butterfly valve, the working principle and the installation mode are the prior art, and the description is omitted. The slag flowing out of the cylindrical pipe 7 is accumulated in the pipe box 5, and the slag can be discharged from the pipe box 5 by opening the electric control valve 13. By closing the electric regulating valve 13, the bottom of the tube box 5 is completely closed, so that an opening at the bottom of the tube box 5 is avoided, and the suction of the negative pressure machine 3 into the wet ball mill 2 is facilitated.

The top of the channel box 5 is provided with a gas sensor 14, the gas sensor 14 comprises an ammonia gas sensor TGS2444 and a KG9701A methane sensor, and the working principle and the installation mode of the ammonia gas sensor TGS2444 and the KG9701A methane sensor are the prior art and are not described herein again. The gas sensor 14 can quickly detect the content of the toxic gas in the tube box 5, and is simple, visual, safe and reliable.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.