Pulverized Anthracite modifying agent and coal blending and coking method using same

Abstract

The invention relates to a pulverized anthracite modifying agent and a coal blending and coking method using the same. The pulverized anthracite modifying agent comprises the components in percentage by weight: 30-60 percent of boric acid, 0.5-25 percent of malonic acid or azelaic acid or alpha-alanine or a mixture of the malonic acid or the azelaic acid or the alpha-alanine, 0.5-25 percent of dodecyl dimethyl benzyl ammonium chloride or cationic cellulose polymer or stearic acid sodium lactate or a mixture of two or three of the dodecyl dimethyl benzyl ammonium chloride or the cationic cellulose polymer or the stearic acid sodium lactate, and 0.5-25 percent of dicyclohexyl phthalate or triphenyl phosphate or a mixture of the dicyclohexyl phthalate or the triphenyl phosphate. The coal blending and coking method comprises the steps of: step 1. modifying anthracite; and step 2. weighing the modified anthracite and coking coal according to 1-50 percent of the mass of coking mixed coal, and blending the coal for coking according to a conventional production technology. The coal blending and coking method has the advantages that the proportion of the anthracite in the coking mixed coal is obviously increased, and the coking cost is substantially reduced. The coal blending and coking method provides a new approach for coking by using the anthracite and expands the resources of the coking coal.

Description

technical field [0001] The invention belongs to the field of coal processing, and in particular relates to an anthracite coal powder modifier and a coal blending coking method using the coal powder modifier. Background technique [0002] In 2012, the production capacity of iron and steel reached 700 million tons, and the demand for coking coal was 600 million tons. Domestic coking coal is far from meeting the needs of the rapid development of the metallurgical industry, and more than 45 million tons of coking coal need to be imported every year. The contradiction between increasingly higher coke quality requirements and worse coal quality has become increasingly prominent. Importing high-priced coal can only solve the short-term dilemma. The development of non-coking coal resources and coking is one of the important ways to expand coking coal resources. [0003] According to domestic and foreign literature records, my country's proven reserves of anthracite coal are nearly 1...

AI Technical Summary

Problems solved by technology

However, if the addition of anthracite is further increased in coal blending, the quality of the produced coke is poor and cannot meet the needs of large and medium-sized blast furnaces.

At present, under the coking oven type and process conditions widely used in our country, there is no good solution for the extensive use of anthracite coking

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