介质粒度对Falcon离心分选效果的影响

Influence of medium size on desulfurization and ash reduction effects of Falcon centrifugal separation

为提高Falcon重介离心分选的脱硫降灰效果，在分析介质性质的基础上．研究了介质粒度对Falcon重介离心分选产品粒度组成、灰分、硫分、可燃体回收率及脱硫效率的影响，同时考察了各产品可燃体回收率与脱硫效率的关系。结果表明：Falcon重介离心分选对＋0．500mm和-0．045mm煤样脱硫降灰效果较差．这是由于分选过程中高密度小颗粒和低密度大颗粒容易发生错配，影响分选效果：而0．125．0．074mm脱硫效果最好，说明0．125-0．074nnn中黄铁矿硫的解离程度相对其他粒级要高，硫分容易脱除。1号介质粒度分布比较均匀，2号介质粒度较细，形成的悬浮液也较稳定，因此可燃体回收率相同时，2号介质Falcon离心分选的脱硫效率要高于1号介质，分选效果较好。

To improve the desulfurization and ash reduction effects of Falcon dense medium centrifugal separation, investigate the influence of medium size on products size composition, ash, sulfur, combustible materials recovery, desuffurization effects.Analyze the relationship between combustible materials and desulfurization effects.The results show that, the Falcon has bad effects on＋0. 500 mm and -0.045 mm size ,this is due to the mismatch between high-density small particle and low-density big particle.The Falcon has good effects on the parti- cle ranging from 0.125 mm to 0.074 mm.This is the result of high dissociation of pyritic sulfur.The size distribution of NO. 1 medium is average, the size of NO.2 medium is small, its suspension is stable.When the combustible material recovery is the same, the NO.2 medium has better desulfurization effects.