配粘结剂与液化剂对炼焦配合煤质量指标影响的实验研究

 目前中国炼焦煤资源不足且价格日趋上涨，降低焦化厂生产成本并扩大炼焦煤种迫在眉睫。本文依据实际生产配煤方案选取六种配煤方案进行研究，采用添加剂替代炼焦配煤中的一种或两种强粘结性煤，从而改善配合煤的质量指标，增加弱粘结性煤用量。结果表明：当不添加瘦化剂时，随粘结剂用量的增加，配合煤灰分降低，挥发分升高，粘结指数升高，粘结剂用5%-7%时替代焦、肥两种煤结焦性能最佳；当添加4%的瘦化剂和5%的粘结剂时，能够抑制配合煤挥发分产率过快升高，且在配合煤的质量指标不变的同时，弱粘结性煤的用量可增加8%左右主焦煤和肥煤的配入比例降低6%左右。

Experimental Study on Quality Index of Blending Coals for Coking Added Additives

As the lack of Coking coals resources in China the continuous increase of raw material’s price, to reduce the cost of blending coals for coking plants and to expand the types of coking coal should be paid much attention. Here we describe six schemes according to practical production. The schemes involve adding additives to replace one or two kinds of coal with strongly caking property in blending coals so as to improve the quality of blending coals and to decrease the quantity of weakly caking property coals accordingly. The results indicate three useful rules for production. If no leaning agent is added into the blending coal, as the increase of binders’ quantity, the ash content in blending coals will decrease while both volatile matter and caking index will increase. The second rule represents that if 5%-7% leaning agents are added to replace coking coal and fat coal simultaneously, the coking property will represent the best. It is also proved that if 4% leaning agents and 5% cinders are both added into the blending coal, the productivity of volatile matter can be restrained. Meanwhile, based on the high quality of blending coals, coals with weakly caking property can be increased by approximately 8%, while coking coal and fat coal can be reduced by about 6%, which means lower cost for production.