The Study Of Coking Characteristic Of Cleaning Coal And Prediction Of Coke Quality In Kailuan

The paper depicts the requirement of quality of coal in coking. It selects three kinds ofcoal in Kailuan company and six kinds of coal in Kailuan Group to test the properties ofcoal. It studies the characteristics of high-sulfur coal and blend coal in Kailuan. The basefactor that can judge of the quality of coal as the quantitative index, and it uses the methodof fuzzy cluster to analyse and optimize projects of blend coal in order to judge and selectblend coal in reason. Finally it forecasts if the blend coal can be coked into the second cokewhen believed level is 0.95 ≤λ<1. It brings forward a method to optimize project ofblend coal through coking test. The paper remedies the shortcoming of evaluating singleindex that can't reflect the whole characteristics .It may eliminate the unreasonableprojects in advance to reduce the testing loss. The method of fuzzy cluster can reflect theso-adeadism of decision-maker. Acording to the fact, it adjusts indexes to satisfy specialcoke to instruct coking practise. At present using the traditional method combining cokingexperiences can't satisfy the demand of blast furnace. In order to seek fast and scientificforecast coke,the paper briefly points out the harm of sulfur and ash in coking coal topudding and coke through experiment. The characteristic of Kailuan coal is based thelinear regression model. It is to bring out the sulfur and ash relation between coke and coalthrough analyzing lots of experiment datas. It points out that linear regression model maypredict the coke sulfur effectively and direct coal blend and control the sulfur content sothat it can assure the quality of coke. It points that the method is feasible.Finally the paper analysises the relation between coal and blend coal, properties ofcoal and index of coke, coal or blend coal and index of coke, the relation between index ofcoke and so on. Characteristic of coking is analyzed generally. The study can instruct toadjust production structure of coal and quality of coke. It also plays an important role inenlarging scope of using high-sulfur coal, empoldering resources of coal and improvingeconomic benefit. It controls the sulfur dioxide in air to protect environment.