摘要
煤泥水浓度是影响脱介效果和精煤产品质量的重要因素，在指导分选生产中起着重要作用。以山西焦煤西山煤电屯兰选煤厂煤泥水浓度偏高情况为例，分析了高频筛回收效果差、絮凝剂添加不科学、浓缩机溢流大、重介系统筛板、筛篮跑粗等因素是影响煤泥水浓度偏大的主要原因。针对上述问题提出控制浓缩机溢流电流在280~310 A，絮凝剂配制成0.1％溶液；降低设备底煤厚度等技术方案。改造后，选煤厂煤泥水质量浓度低于13 g / L，提高产品产率，实现节能降耗，提高选煤厂的效率。
Coal slime water concentration was the main factor affecting the medium drainaging and clean coal quality,it also played impor-tant role in guiding flotation.In order to decrease the coal slime water concentration in Tunlan coal preparation plant,this paper analyzed the production flow.The results showed that,poor recycling effects of high frequency vibrating screen,unreasonable flocculant addition, large water from concentrated machine,leakage of coarse slime through the sieve plate and sieve basket of dense medium system were the main influencing factors.To resolve the above problems,the author prepared 0.1% flocculant by adjusting the electriccurrent of overflow ranging from 280 A to 310 A,decreased the equipment bottom coal thickness and other technical schemes.After transformation,the concen-tration of coal slime water was below 13 g/ L,the products yield were improved.The transformation saved the energy and decreased the pol-lutant emissions.
出处
《洁净煤技术》
CAS
2014年第6期86-88,共3页
Clean Coal Technology
关键词
煤泥水
浓度
溢流
絮凝剂
coal slime water
concentration
overflow
flocculant
