Method for producing steel claw protecting ring by using electrolytic aluminum cover material

Abstract

The invention discloses a method for producing a steel claw protecting ring by using an electrolytic aluminum cover material as aggregate. The method comprises the following steps: firstly, proportioning materials by mass percent, wherein the content of the cover material is 93-95%, the content of C3H70 (hydroxypropyl methylcellulose) is 3-4%, and the content of asphalt is 2-3%; adding a proper volume of water, heating to the temperature of 50-85 DEG C, and uniformly stirring; molding; demolding, feeding to a roasting chamber, heating to the temperature of 200-250 DEG C, and roasting for 2-4 hours; cooling. The method has the advantages that the production cost can be reduced, the environment is protected, the working efficiency is increased, the labor operation environment for workers is improved, the workload of a later stage is reduced, and the like; the method can be used for producing the steel claw protecting ring.

Description

technical field [0001] The invention relates to a production method of a steel claw protection ring, in particular to a production method of an electrolytic aluminum covering material steel claw protection ring. Background technique [0002] The existing steel claw protection ring is usually a steel claw protection ring made of carbon materials. In order to prevent the steel claw from being melted by high-temperature aluminum liquid during the production of electrolytic aluminum, its composition is about 70-80% of calcined petroleum coke, pitch 30-20%, the steel claw protection ring of carbon products effectively protects the steel claw from being melted by the high-temperature aluminum liquid as much as possible, and ensures the low iron content of the aluminum liquid, but it also has the following shortcomings: [0003] 1) It is in the form of bulk materials, which requires special operators to manually load, which increases labor costs; [0004] 2) Due to the cross-opera...

AI Technical Summary

Problems solved by technology

[0003] 1) It is in the form of bulk materials, which requires special operators to manually load, which increases labor costs;

[0004] 2) Due to the cross-operation of people and forklifts in the loading work area, there is a great potential safety hazard;

[0005] 3) Since it is in the form of bulk materials, a special paper ring is required for restraint during filling, which wastes paper;

[0006] 4) If the asphalt content is too high, a large amount of harmful gas will be released after high-temperature roasting in the electrolytic cell, which will seriously pollute the environment;

[0007] 5) In the follow-up production, due to some special reasons, a small part of the steel claws will be melted by the high-temperature aluminum liquid. At this time, the protective ring of the carbon product will fall into the electrolytic cell and form carbon slag, which requires special equipment to remove it, which will affect electrolytic production;

[0008] 6) The work efficiency is not high: due to the manual loading operation method, the loading workload per person per shift is about 100 anodes (400 rings);

[0009] 7) The cost is relatively high