摘要
针对兖州煤业股份有限公司济三选煤厂煤泥水难以沉降问题,进行了煤泥性质和煤泥絮凝沉降的试验研究,得出了煤泥水沉降规律。煤泥性质研究表明:选煤厂一段浓缩浓缩效果不理想,一段浓缩溢流中含有大量细泥,该部分水作为循环水使用不合理,严重影响选煤效果。煤泥絮凝沉降试验表明:浓缩机溢流煤泥水质量浓度低于60 g/L时,沉降速度较快,澄清区高度较大;将旋流器溢流质量浓度配制为73 g/L,聚合氯化铝铁(PAFC)用量6 mL,聚丙烯酰胺(PAM)用量15 mL,加入凝聚剂30 s后再加入絮凝剂,沉降区高度最大,煤泥沉降效果最好。
In order to solve the problem that coal water slurry is difficult to flocculate and settle in Jining NO.3 coal preparation plant,test the coal slime properties and do experiments in flocculation.The flocculation laws were got.The analysis on coal slime properties show that the original concentration effect is not perfect,that means there are large amounts of fine slime in original concentration overflow,which shouldn＇t be used as recycled water,otherwise,the coal dressing effect will be severely influenced.The experimental results of flocculation show that when the mass concentration of coal water slurry in overflow section is below 60 g/L,the setting velocity is higher and the depth of settling section is deeper,the two traits will get the best,when The mass concentration of coal water slurry is 73 g/L,PAFC is 6 mL and PAM is 15 mL which was added 30 s later than PAFC.
出处
《洁净煤技术》
CAS
2011年第6期7-9,13,共4页
Clean Coal Technology
基金
黑龙江省教育厅科学技术研究资助项目(11541303)
关键词
煤泥水
浓缩
凝聚剂
絮凝剂
絮凝沉降
coal water slurry
concentration
polycoagulant
flocculant
flocculation and settling
