煤样黏结特性测定值影响因素分析

ANALYSIS OF THE INFLUENTIAL FACTORS OF THE DETERMINATION

由于用于测定煤样黏结指数的专用无烟煤价格较高,有必要进行专用无烟煤替代品的研究.以石英砂代替专用无烟煤为添加物进行煤样的黏结指数测定实验,结果表明,不同煤种黏结指数差别较大;添加物及其掺合比对煤样黏结指数均有显著的影响.正交实验研究表明,添加物对煤样黏结指数的影响最大;添加物掺合比次之,二者为高度显著的影响因素;煤种对黏结指数的影响最小,为较显著影响因素.根据正交实验结果得出添加物及掺合比的合理选择,在此基础上,建立了以非专用无烟煤为添加物的煤样黏结指数与以专用无烟煤为添加物的煤样黏结指数之间的关系.

It is necessary to do some research on the substitute of standard anthracite because of the higher price of anthracite, which is supplement to investigate coking index of coal. The testing results of six kind of coals which are mixed with standard anthracite by the regulated ratio in standard（GB/T5447--1997） show that the coal is different, the eoking index is different obviously. The further tests, in which the coal are mixed with quartz sand, demonstrate that the supplement and its mixing ratio have an significant influence on the coking index of coal. The results of orthogonal testing illustrated that supplement has more significant effect on the coking index of coal; the mixing ratio of supplement is second, they are highly significant factors of coking index; the type of coal is relatively more obvious than supplement and its mixing ratio, it is relatively significant factor. Some conclusions are drawn by the results of orthogonal testing that the choice of supplement and its mixing ratio with reason, the establishment of relationship between the coking index of coal mixed with non-standard anthracite and that of coal mixed with standard anthracite.