Coke powder removing system for pre-calcined needle coke

Abstract

The invention relates to a coke powder removing system for pre-calcined needle coke. The coke powder removing system comprises a first vibrating screen, a crusher, a second vibrating screen, a third vibrating screen, a first conveyor belt and a second conveyor belt, wherein the first vibrating screen is used for dividing green coke with the particle size of the first particle size into green coke with the particle size of the second particle size and green coke with the particle size of the third particle size, one part of the green coke treated by the crusher is conveyed to a first conveying belt, the other part of the green coke is conveyed to a second conveying belt, the second conveying belt is used for conveying the green coke conveyed to the second conveying belt for calcination, the first conveying belt is used for conveying the green coke conveyed to the first conveying belt to the second vibrating screen, the second vibrating screen is used for dividing the green coke conveyed to the second vibrating screen into green coke with the particle size of fourth particle size and green coke with the particle size of fifth particle size, and the third vibrating screen is used for dividing the green coke conveyed to the third vibrating screen into green coke with the particle size of sixth particle size and green coke with the particle size of seventh particle size.

Description

technical field [0001] The invention relates to the technical field of raw coke treatment, in particular to a needle coke decoking powder system before calcining. Background technique [0002] Needle coke is a high-quality variety of carbon materials and one of artificial graphites. It has a series of advantages such as low thermal expansion coefficient, low porosity, low sulfur, low ash, low metal content, high conductivity and easy graphitization. [0003] In the prior art, the needle coke contains coke powder with a particle size of <1mm. If the coke powder in the needle coke is not removed before calcining, problems that may easily result include: [0004] 1. During the calcination process, the coke powder burns fast and has high combustion efficiency, which leads to an abnormal increase in the calcination temperature and affects product indicators; [0005] 2. Coke powder will increase the loss of needle coke, reduce the yield, and affect the particle size compositi...

AI Technical Summary

Problems solved by technology

[0004] 1. During the calcination process, the coke powder burns fast and has high combustion efficiency, which leads to an abnormal increase in the calcination temperature and affects product indicators;

[0005] 2. Coke powder will increase the loss of needle coke, reduce the yield, and affect the particle size composition of the needle coke product after calcining

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