Coking coal and preparation method thereof

Abstract

The invention discloses coking coal and a preparation method thereof. The preparation method is characterized by treating raw materials comprising, by weight, 15-25 parts of main coking coal, 10-15 parts of meager lean coal, 10-15 parts of gas coal, 10-15 parts of rich coal, 10-20 parts of blind coal, 10-15 parts of spray-blow coal, 5-10 parts of coal slime, 5-10 parts of coke powder and 3-10 parts of petroleum coke. Various raw coals are mixed, raw material ratio is scientific, coking coal types are expanded, the coal slime, the coke powder and the petroleum coke serve as adhesives, and sources are wide. The coking coal has the advantages of wide coal type adaptability, large raw material reserves, low price, easiness in acquisition, low cost and high recovery rate. The preparation process method is simple, product quality is stable, effects are obvious, and the coking coal is convenient to use.

Description

technical field [0001] The invention relates to coking coal and a preparation method thereof. Background technique [0002] Coke is a solid fuel formed by a series of complex physical and chemical processes such as pyrolysis, polycondensation, solidification, and shrinkage under the action of high-temperature dry distillation of coking coal. It contains more than 96% carbon and has a calorific value of about 29×103kJ / kg. Coke is mainly used in blast furnace ironmaking and blast furnace smelting of non-ferrous metals such as copper, lead, zinc, titanium, antimony, mercury, etc., and acts as a reducing agent, exothermic agent and material column skeleton. increase, resulting in a further increase in the demand for coke. Due to the increasing scarcity of coking coal resources, the price of incoming coal has remained high for a long time, coupled with the increasingly low price of coke, coking enterprises are required to reduce the cost of incoming coal and improve the quality...

AI Technical Summary

Problems solved by technology

Due to the increasing scarcity of coking coal resources, the price of incoming coal has remained high for a long time, coupled with the increasingly low price of coke, coking enterprises are required to reduce the cost of incoming coal and improve the quality of coke products. However, the current coke process is complicated and equipment investment is large. , the volatile matter generated in the carbonization process is not fully combusted, the fuel consumption is high, the strength, ash content, sulfur content, porosity and lumpiness of the product are not ideal, and it is difficult to meet the quality standard of foundry coke