Petroleum coke-manufactured aluminium electrolysis anode formed coke and preparing process and device thereof

Abstract

The invention discloses a petroleum coke-manufactured aluminium electrolysis anode formed coke and a preparing process and device thereof, belonging to the field of aluminium electrolysis anode formed cokes and preparing processes and devices thereof. The petroleum coke-manufactured aluminium electrolysis anode formed coke is prepared from the following raw materials in parts by weight: 20 to 30 parts of petroleum coke aggregate, 80 to 70 parts of petroleum coke powder, 2 to 3 parts of binder, 2 to 3 parts of raising agent and 0.3 to 0.5 part of stabilizer. The petroleum coke-manufactured aluminium electrolysis anode formed coke prepared by the preparing process solves the technical problem that quality performance of the coke and a prebaked anode after forging of the petroleum coke are severely influenced due to overlarge proportion of coke powder in the petroleum coke, achieves manufacturing use demands of a carbon prebaked anode and improves production efficiency of the petroleum coke-manufactured aluminium electrolysis anode formed coke and the quality of the coke and the prebaked anode after forging of the petroleum coke.

Description

technical field [0001] The invention belongs to an aluminum electrolysis anode coke and its preparation process and equipment, in particular to a production of aluminum electrolysis anode coke from petroleum coke powder and its preparation process and equipment. Background technique [0002] The aluminum electrolytic anode coke made of petroleum coke powder is referred to as petroleum coke for short. Petroleum coke is the main raw material for making electrolytic aluminum carbon anodes, and its quality directly determines the quality of prebaked anodes. At present, the proportion of coke powder in petroleum coke is relatively large. Due to the large content of coke powder, the quality and performance of petroleum coke calcined coke and prebaked anode are seriously affected, and the oxidation burning loss is serious, which increases the binder in the production batching process. consumption, resulting in an increase in production costs. The main hazards caused by the large ...

AI Technical Summary

Problems solved by technology

During the calcination process, the coke powder in the petroleum-type coke is relatively light, and part of the coke powder is sucked into the calcination furnace by negative pressure to burn, causing burning loss

The smaller the coke powder particles are, the larger the surface area is. If the proportion of coke powder is too high, the petroleum coke is more likely to be oxidized during the combustion process, which reduces the quality and performance of the calcined coke. Form coke yield is also declining

[0004] The second is to affect the normal production of the calcination process

Calcined coke with a large amount of coke powder has relatively poor quality indicators such as true density, tapped bulk density, and resistivity

The content of coke powder in petroleum coke is high, and there are more fine materials after the material is calcined. The high proportion of coke powder leads to a low proportion of large-grained aggregates in the molding production batching process, which cannot meet the needs of production and reduces the cost of forming prebaked anodes. Performance

Images