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Coal preparation method for coking coal material

A technology for coking coal and coal material, applied in coke ovens, petroleum industry and other directions, 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 facilitating homogenization

Active Publication Date: 2021-03-09
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 for coking coal material
  • Coal preparation method for coking coal material
  • Coal preparation method for coking coal material

Examples

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 for coking coal materials, the method comprising: crushing strongly cohesive coal materials, medium cohesive coal materials and weakly cohesive coal materials; Particles with a particle size greater than 4mm are crushed until the particle size is less than 4mm, accounting for more than 80wt%, and then mixed with strong cohesive coal materials with a particle size not greater than 4mm, medium cohesive coal materials are crushed until the particle size is less than 1.5mm, accounting for 90wt% % or more, the weakly cohesive coal material is crushed until the particle size is less than 0.5mm, accounting for more than 90wt%; the crushed coal material is mixed according to the weight ratio, and then enters the top-loading coke oven or tamping coke oven for coking. The method of the present invention combines the particle size and cohesiveness of coal materials, on the basis of ensuring reasonable particle sizes of different cohesive coals, strengthens the particle size difference between coal materials, optimizes the particle size distribution of coking coal materials, and can effectively improve the coal The bulk density of the material can be improved to improve the quality of coke and reduce the cost of coking.

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 Patents(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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