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Coal preparation method of coking coal material

A coking coal and coal material technology, applied in coking ovens, petroleum industry, etc., can solve problems such as the inability to optimize coal blending schemes in a targeted manner, and achieve the effects of expanding particle size difference, effective combination, and homogenization

Active Publication Date: 2020-04-10
CCTEG CLEAN ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned patents, the selection of coal blending composition mainly considers cost and consumption, but it does not consider the different characteristics of coal materials, and it is impossible to optimize the coal blending scheme in a targeted manner.

Method used

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  • Coal preparation method of coking coal material
  • Coal preparation method of coking coal material
  • Coal preparation method of coking coal material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The present embodiment provides a kind of coal preparation method of coking coal material, and the process flow chart of described method is as follows figure 1 shown, including the following steps:

[0056] (1) After mixing coking coal, fat coal, and gas fat coal according to the proportion, first pass through a 4mm sieve for screening, and the oversize enters the crusher, and crushes until the particles with a particle size of less than 4mm account for 80wt%, and then mix with the under-sieve The mixture is evenly mixed, and the average particle size of the mixed particles is 2.80mm; the lean coal and gas coal are put into the crusher according to the ratio, and the particles with a particle size of less than 1.5mm account for 90wt%, and the average particle size of the crushed particles is 0.60mm; the lean coal and coke powder are put into the fine crusher according to the ratio, and the particles that are finely crushed to a particle size of less than 0.5mm account ...

Embodiment 2

[0059] The present embodiment provides a kind of coal preparation method of coking coal material, and described method comprises the following steps:

[0060] (1) After mixing coking coal and fat coal according to the proportion, first pass through a 4mm sieve for sieving, and the oversize enters the crusher, crushed until particles with a particle size less than 4mm account for 85wt%, and then mix with the undersize evenly, The average particle size of the mixed particles is 2.60mm; the lean coal and gas coal are put into the crusher according to the ratio, and the particles that are crushed to a particle size of less than 1.5mm account for 92wt%, and the average particle size of the crushed particles is 0.55mm; Lean and lean coal and coke powder enter the fine crusher according to the ratio, and the finely crushed particles with a particle size of less than 0.5mm account for 92wt%, and the average particle size of the finely crushed particles is 0.13mm. wet processing;

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Embodiment 3

[0063] The present embodiment provides a kind of coal preparation method of coking coal material, and described method comprises the following steps:

[0064] (1) After mixing coking coal, fat coal, and 1 / 3 coking coal according to the ratio, first pass through a 4mm sieve for screening, and the oversize enters the crusher, and crushes until the particles with a particle size of less than 4mm account for 90wt%, and then mix with the sieve The material is mixed evenly, and the average particle size of the mixed particles is 2.40mm; the lean coal, gas coal, and 1 / 2 medium caking coal are put into the crusher according to the proportion, and the particles with a particle size of less than 1.5mm account for 95wt%. The average particle size of the crushed particles is 0.50mm; the coke powder enters the fine crusher, and the particles that are finely crushed to a particle size of less than 0.5mm account for 95% by weight, and the average particle size of the finely crushed particles ...

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Abstract

The invention provides a coal preparation method of a coking coal material. The method comprises the following steps: crushing a strong cohesive coal material, a medium cohesive coal material and a weak cohesive coal material; crushing the particles with the particle size of more than 4mm in the strong cohesive coal material until the particles with the particle size of less than 4mm account for more than 80wt%, mixing the particles with the strong cohesive coal material with the particle size of not more than 4mm, crushing the medium cohesive coal material until the particles with the particle size of less than 1.5mm accounts for 90wt% or more, and crushing the weak cohesive coal material until the particles with the particle size of less than 0.5mm accounts for 90wt% or more; and mixingthe crushed coal materials according to a weight ratio, and feeding the mixture into a top-charging coke oven or a tamping coke oven for coking. According to the method disclosed by the invention, thegranularity and cohesiveness of the coal materials are combined, and on the basis of ensuring reasonable granularity of different cohesive coal, the grain fraction difference between the coal materials is strengthened, the granularity distribution of the coking coal materials is optimized, so that the stacking density of the coal materials can be effectively improved, and the aims of improving the coke quality and reducing the coking cost are achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and coking, and relates to a coal preparation method for coking coal materials. Background technique [0002] With the increasing scarcity of coking coal resources and the low profits of the steel and coking industries, enterprises need to continuously reduce coking costs. However, the subsequent production and utilization require continuous improvement of coke quality, that is, the reduction of coal blending coking costs cannot be at the expense of coke quality Therefore, it is becoming more and more important to improve the quality of metallurgical coke, expand the source of coal raw materials for coking, and reduce the cost of coke production through other means. [0003] In order to reduce production costs, coking plants often use a variety of coal materials with relatively different properties for coal blending and coking, which requires different crushing processes for different coal mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 何国锋张胜局孙海勇吕向阳赵力明王勇刘烨伟徐明磊段静陈浩王冉陈明波柳金秋张孝雨李磊
Owner CCTEG CLEAN ENERGY CO LTD
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