刮轮式磁盘机回收尾煤泥中重介质的研究  

Dense medium recovery from tailings with scraping wheel disk driver

作　　者：陈立 倪明亮 黄沛洋 

机构地区：[1]四川环能德美科技股份有限公司,四川成都610045

出　　处：《洁净煤技术》2013年第2期113-116,共4页Clean Coal Technology

摘　　要：介绍了刮轮式磁盘机的结构、作用原理及优点。分析了神华宁夏煤业集团大武口选煤厂产品带介情况和系统研究该厂尾煤泥带介磁性衰减率、粒度特性和物相特性,结果表明:该厂精煤、中煤和矸石带介量均较低,尾煤泥平均带介量高达43.08 kg/t,导致原煤重介质损失量高达2.58 kg/t,其中36%磁性较强但粒度偏小,容易损失;64%是重介质与石英连生体,磁性较弱而容易损失。利用刮轮式磁盘机回收尾煤泥中的重介质工程运行效果表明,刮轮式磁盘机可降低重介质损耗0.70 kg/t,每年可挽回经济损失336万元,且回收得到的重介质磁性物质量分数在85%以上,可直接返回循环使用。Introduce the structure, working principle, characteristics of scraping wheel disk driver. Analyse the dense medium content mixed in the products of Dawukou coal preparation plant, as well as the magnetic attenuation rate, grain size and phase characteristics of dense medium. The results indicate that, the dense medium in clean coal, middlings and gangue are lower, while in tailings it reaches up to 43.08 kg/t, that means 2. 58 kg dense medium is lost from each ton raw coal. Among the lost dense medium,36 percent have stronger magnetism and smaller size ,64 percent are intergrowth of heavy medium and quart, all these characteristics decide it＇s easy to lose. The scraping wheel disk driver can recycle 0.70 kg dense medium from each ton raw coal,in which the magnetic material content is up to 85 percent,that can be directly recycled. The plant saves 3.36~106 yuan each year.

关 键 词：刮轮式磁盘机 重介质 尾煤泥 

分 类 号：TD94[矿业工程—选矿]