Process of Coking Coal Blending

Reasonable selection process, for the expansion of coking coal resources and coke quality is of great significance. The difference between the various processes, mainly lies in the crushing way of coal processing, while the coal receiving and storage process is basically the same. According to different grinding processing methods, coal blending process is divided into the following two.

(1) First proportion to match before crushing process
This process is the composition of the coking coal of the individual coal in accordance with the provisions of the proportion first, and then grinding processing. The process is as follows: from the field to the various grades of coal, coal unloading equipment to the storage of the coal field of individual coal storage sites. When coal is used, coal is taken from the coal storage site to the coal preparation section. First, according to types of coal to the coal distribution tank, and then by blending equipment will be different brands of coal with a certain proportion of together. And then with a good coal sent to the crushing section, which the crusher will shatter to a certain fineness, and finally tower by the belt conveyor machine to the coal storage tower.

This process is simple, less equipment, compact layout, easy operation, no need mixing equipment after crushing, but the poor cohesiveness and not uniform of coal, should not be used in the process. However, due to its obvious advantages, the process is the vast majority of coking plants in China generally used.

2) First crushing before proportion to match
This process is to form the individual types of coal first, according to their nature for different fineness to crusher, and then according to the provisions proportion to cooperate, and finally to mix.
This process is more uniform grinding coal to avoid the large particles of concentrated and bonded coal too fine grinding, but the process more complex, more equipment, investment, so the domestic coking plant rarely used.