LI Ping;FU Xiao-heng;ZHOU Jian-jun;LI Xiang-li(Chemistry and Environment Engineering College;

• 1: China University of Mining and Technology
• 2: Beijing 100083
• 3: China)

Abstract：

The reserves and utilization situation of coking coal in China were analyzed. Middlings of Fangezhuang Coal Preparation Plant that is 1 40 from to 1 60 density grade is used as experiment test samples for exploration the utilization good quality coal resources of China. Float and sink test are adopted by using the ZnCl 2 as heavy liquid and classification grade was conducted according to the density. And then various density grade coal samples putting into grinding and treatment by using the flocculation-floatation process for recovery the low ash cleaned coal. The conditions of separation the low ash cleaned coal were approached from Fangezhuang middlings. After classification, the total ash is under 8 14% at the same separation density condition.

Key Words： middlings;float and sink test;grinding;liberation of intergrown constituents;flocculation-floatation

Abstract:

Keywords:

Foundation:

Author: LI Ping;FU Xiao-heng;ZHOU Jian-jun;LI Xiang-li(Chemistry and Environment Engineering College;

DOI: 10.13226/j.issn.1006-6772.2005.02.005

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