弱粘煤黏结指数及其储存期限的研究

Study of a Weak Adhesive Bond Index of Coal and Its Storage Period

黏结性是烟煤的重要工艺性质,实际生产中弱粘煤黏结指数G值受储存期限的影响较大,随着储存期限的增长,弱粘煤黏结指数G值呈降低趋势。所以对弱粘煤的采购应加以一定的限制:应根据用量按照采购计划适时进行采购,确保弱粘煤储存期限不应太长,一般不应超过15d的使用量。在炼焦配煤中,通过优化配煤方案,配入适当的弱粘煤不仅可以降低焦炭灰分、硫分,保证焦炭质量,还可以达到降低焦炭成本的目的。现就弱粘煤黏结指数G值降低情况进行初步研究。

The bonding process is an important nature of bituminous coal.The bond index G value of a weak adhesive coal is greatly influenced by storage period in the actual production.G value of coal gets decreasing as growth of the storage period.So the purchase date of the weak adhesive coal should be restricted：the amount should be based on timely procurement in accordance with production plans to ensure that the weak should not be too sticky,coal storage period generally not exceeding 15 days.Coking coal blended with appropriate weak stick coal not only can reduce the coke ash and sulfur,to ensure the quality of coke,also reduce cost.It was investigated that the caking index G value of weak adhesive coal decreased.