煤与单一矿物质在摩擦电选过程中的分离  

Separation of Coal and Mono-Mineral Using a Triboelectrostatic Beneficiation

作　　者：马瑞欣[1] 石常省[2] 章新喜[3] 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083 [2]华北科技学院环境工程系,北京101601 [3]中国矿业大学化工学院,江苏徐州221116

出　　处：《中国矿业大学学报》2010年第2期270-274,共5页Journal of China University of Mining & Technology

基　　金：国家高技术研究发展计划(863)项目(2002AA529120);国家重点基础研究发展计划(973)项目(G1999022205-03)

摘　　要：摩擦电选能够有效分选粒度小于74μm的微粉煤,为了探索煤中矿物质在摩擦电选过程中的分离规律,将净煤(ρ<1.3g/cm3)与煤中常见伴生矿物质如石英、高岭土、黄铁矿、方解石等分别按照一定比例混合,进行摩擦电选研究,并对各组精煤产品进行了X射线荧光光谱分析.试验结果表明:4种矿物质都可以通过摩擦电选方法有效脱除,方解石、石英、黄铁矿和高岭土的脱除率可分别达74.871%,82.608%,96.169%,94.986%.The triboelectrostatic beneficiation, an advanced dry cleaning technology, can achieve efficiently separation of 〈74μm fine coal. In order to investigate the separation mechanism of triboelectrostaic beneficiation, the pure coal （ρ〈1. 3 g/cm^3） were mixed proportionally with the ordinary associated minerals, including quartz, kaolin, pyrite, calcite, respectively. The triboelectrostatic beneficiations were completed for the mixtures mentioned above. The X- ray fluorescence was used in the quantitative analysis for cleaned coals. The results show that four monomineral can be separated effectively from the mixture using the triboelectriestatic beneficiation method. The removal efficiency of calcite, quartz, pyrite and kaolin was 74. 871%, 82. 608% ,96. 169% ,94. 986%, respectively.

关 键 词：摩擦电选 微粉煤 矿物质 X射线荧光光谱 

分 类 号：TD924.5[矿业工程—选矿]