摘要
以黔西南普安矿区恒泰煤矿中高硫煤为研究对象,在其煤质特性分析的基础上,采用摇床对其进行了脱硫降灰可行性试验研究。研究结果表明:该原煤水分为2.03%,全硫分为2.05%,干基灰分为16.85%,干燥无灰基挥发分为10.06%,属于典型中高硫分、低中灰分且变质程度较高的烟煤;通过对摇床分选过程中冲水量、横向坡度、冲程等因素进行综合研究,在入选原煤粒度上限为0.8 mm、煤浆浓度为20%、冲水量为5.4 L/min、横向坡度为5°、冲程为15 mm的分选条件下,一次粗选可获得灰分为10.89%、硫分为1.10%、产率为27.84%的精煤;通过“一粗、一精、一扫”的分选流程,可获得灰分为11.16%、硫分为0.96%、产率为32.83%的最终精煤产品。该研究可为黔西南地区中高硫煤资源清洁与综合利用提供借鉴。
The medium and high-sulfur raw coal produced by Hengtai Coal Mine is selected as the object of study.Based on analysis of the property of raw coal,test is made on the feasibility of carrying out desulfurization and ash reduction of the coal using shaking table.Test result shows that the coal has a moisture of 2.03%,a total sulfur of 2.05%,an ash of 16.85%(dry basis),and a content of volatile matters of 10.06%(dry ash-free basis).It is a typical bituminous coal with medium and high sulfur content,low to medium ash content and a higher metamorphism.Result of comprehensive study on such factors as table′s flushing water volume,lateral inclination angle and operating stroke shows that when the table is used for treating a raw coal feed with a upper size limit of 0.8 mm and a solids concentration of 20%under the operating conditions of a flushing water quantity of 5.4 L/min,a traverse gradient of 5°and a stroke of 15 mm,a clean coal product having an ash of 10.89%,a sulfur of 1.10%and a yield of 27.84%can be obtained through a single rougher process;and by applying the roughing-cleaning-scavenging combined process,a final clean coal product with an ash of 11.16%,a sulfur of 0.96%and a yield of 32.83%can be obtained.The study made provides a basis for clean and comprehensive utilization of high-sulfur coal resources in southwestern Guizhou Province.
作者
宋杨
杨欢欢
程伟
SONG Yang;YANG Huanhuan;CHENG Wei(College of Mining, Guizhou University, Guiyang 550025, China;National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guizhou University, Guiyang 550025, China;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guizhou University, Guiyang 550025, China)
出处
《选煤技术》
CAS
2020年第4期12-16,共5页
Coal Preparation Technology
基金
国家自然科学基金资助项目(41802190)。
关键词
脱硫降灰
中高硫煤
摇床分选
desulfurization and ash reduction
medium and high-sulfur coal
tabling
作者简介
宋杨(1994—),男,辽宁本溪人,硕士研究生,研究方向:煤炭脱硫降灰;通讯作者:程伟(1983—),男,湖北黄冈人,副教授,博士,从事煤系资源利用与煤地球化学方面研究工作,E-mail:wcheng1@gzu.edu.cn,Tel:13595134046。
