三产品重介质选煤工艺在安泰选煤厂的应用  

Application of three-product heavy medium coal preparation process in Antai coal preparation plant

作　　者：张瑞文[1] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《洁净煤技术》2015年第5期31-34,共4页Clean Coal Technology

基　　金：天地科技开采设计事业部科技创新基金资助项目(KJ-2014-TDKC-04)

摘　　要：为设计高效、先进的炼焦煤选煤厂,通过对比分析目前国内常用炼焦煤工艺,结合安泰选煤厂的原煤性质及周边矿区现有分选工艺,研究确定安泰选煤厂工艺流程,并对选煤厂应用效果进行分析。结果表明,当分选精煤灰分为10%左右时,精煤产率均在50%以上,原煤可选性属于较难选~难选,为良好炼焦用煤。确定安泰选煤厂工艺流程为：预先脱泥无压三产品重介质旋流器主选,1.5~0.25 mm TBS粗煤泥分选,〈0.25 mm细煤泥浮选,经浓缩压滤后回收。分选密度稳定在1.40 g/cm3时,TBS精煤灰分为10.17%~11.71%,浮选精煤灰分为9.28%~10.67%,分选精煤灰分均在10%以下。中煤损失产率维持在1.85%~3.20%,中煤发热量为23 MJ/kg以上,达到动力煤要求。In order to design efficient and advanced coal preparation plant,the commonly used coking processes,coal quality characteristics of Antai coal preparation plant and surrounding existing coal preparation process were investigated. The optimum coal preparation process was that,for pre- desliming and main election by three- product non pressure heavy medium cyclone,1. 5 mm to 0. 25 mm particles was dewatered by TBS coarse slime separator,For- 0. 25 mm particles,the flotation was carried out first,then the flotation clean coal and tailings were recycled by pressure fliter. Actual production showed that the separation density stabilized at 1. 40 g / cm3,the clean coal ash was between 9. 28% to 10. 67%,loss rate of medium coal was between 1. 85% to 3. 20%,the calorific value of the medium coal remained at more than 23 MJ / kg.

关 键 词：煤质特征 分选密度 工艺流程 重介质旋流器 

分 类 号：TD94[矿业工程—选矿]