Method for increasing supply amount of high-quality gas-fat coal through coking

Abstract

The invention discloses a method for increasing a supply amount of high-quality gas-fat coal through coking. The method comprises the following steps: getting high-quality gas-flat coal which is also named as 1890 coal with ash content less than or equal to 9, volatile matters less than 41, sulfur less than 0.5 and a G value of 95-851; (2) grinding coke into coke powder, wherein the coke powder with grain size of 0.2mm is greater than or equal to 80%; (2) crushing the high-quality gas-fat coal to obtain greater than or equal to 80% of the coke power with grain size of 3 mm; (3) uniformly mixing the coke powder and the high-quality gas-fat coal in a weight ratio of 1 to (28-30); (4) pelletizing the mixed coal through a high-pressure paired roller to obtain the coke powder with grain size of 5 mm; and (5) controlling the proportion of preparing coal from coking, wherein the proportion of the pelletized coal to the main coke coal is 28-30% to 70-72%. The method can combine the local coking coal resource advantages, and develops coal-preparing and coking, so that local coking coal resources are sufficiently utilized; and moreover, mechanical strength of coke and coke hot-state strength are further improved.

Description

technical field [0001] The invention relates to the technical field of coking, and belongs to the coal blending coking technology, in particular to a method for increasing the blending amount of high-quality gas-fertilized coal in coking. Background technique [0002] 1890 coal (ash content ≤ 9, volatile content < 41, sulfur < 0.5, G value 95-851) is a high-quality gas-fertilized coal, but the impact of the increase in the amount of the coke has always been a fatal factor that has troubled the increase in the amount. . Through the experiment of 1890 limit allocation, it has been learned that the 1890 allocation can reach up to 40%, but due to the limitation of actual coking coal resources, it cannot be used in actual production. At present, the actual production capacity of 1890 is not equal to the actual demand for coal blending, and the advantages of its own mineral resources cannot be fully utilized. [0003] The reserves of coking coal resources in the world do n...

AI Technical Summary

Problems solved by technology

Through the experiment of 1890 limit allocation, it is now known that the 1890 allocation can reach up to 40%, but due to the limitation of actual coking coal resources, it cannot be used in actual production and application

At present, the actual production capacity of 1890 is not equal to the actual coal blending demand, and the advantages of self-owned mineral resources cannot be fully utilized