潞安矿区选煤厂煤泥深度分选技术研究  

Study of the technology for in-depth separation of the slime generated in coal preparation plants in Lu′an Mining Area

作　　者：程志红 沈亮 CHENG Zhihong;SHEN Liang(Shanxi Lu'an Mining(Group)Co.Ltd.,Xiangyuan 046204,China;School of Materials Science&Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]山西潞安矿业(集团)有限责任公司,山西襄垣046204 [2]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《选煤技术》2022年第3期35-40,共6页Coal Preparation Technology

基　　金：国家自然科学基金资助项目(52104241);中国博士后基金资助项目(2019M652163)。

摘　　要：为了实现煤泥的减量化,采用X射线衍射仪、X射线荧光光谱仪和激光粒度仪对煤泥及其分选后的产物的性质进行了分析,提出采用水力旋流器分级+正-反浮选的煤泥深度分选工艺对煤泥进行提质。研究结果表明:潞安矿区煤泥主要由煤、高岭石和石英组成;当水力旋流器入料压力为0.2 MPa时,采用4;水力旋流器可以实现高岭石在溢流中的富集,并可从煤泥中回收产率为34.31%、灰分为10.90%的精煤。该研究成果可有效地实现煤泥的减量化甚至无量化,有助于煤炭的清洁高效利用。In order to realize reduction of slime output,an analysis is made on the properties of the slime and its separated products using X-ray diffractometer,X-ray fluorescene spectrometer and laser particle size analyzer.Based on the result of analysis,a combined slime in-depth separation scheme of using hydrocyclone for sizing plus normal and reverse flotation processes is finally selected for upgrading of the slime,As shown by study result,the slime in Lu′an Mining Area is dominantly composed of coal,kaolinite and quartz;when the feed pressure of the 4;hydrocyclone is 0.2 MPa,the kaolinite can get enriched in its overflow,and a clean coal product with a yield of 34.31%and an ash of 10.90%can be recovered from the slime;and the use of the scheme is an effective approach for reduction or minimization of the volume of the coal slime produced by the plants.The research-derived achievements contribute to clean and efficient utilization of coal.

关 键 词：煤泥减量化 煤泥深度分选 水力旋流器分级 正浮选 反浮选 煤泥无量化 

分 类 号：TD943[矿业工程—选矿]