摘要
为解决动力煤选煤厂煤泥水沉降困难,常用药剂不能满足煤泥水沉降要求,添加进口药剂加速煤泥水沉降价格昂贵的难题,采用FeSO_(4)·7H_(2)O替代常用药剂,对煤泥水中沉降效果进行了考察。结果表明:使用FeSO_(4)·7H_(2)O煤泥水沉降效果明显,处理后的复用水质明显优于使用聚合氯化铝。FeSO_(4)·7H_(2)O价格低廉,不含氯离子,对选煤厂设备及厂房腐蚀性较小,为选煤厂煤泥水沉降提供了一种新的药剂选择。
The trouble with power coal preparation plants in slime water treatment is the difficulty to let the slime settle down.As the reagents in common use cannot yield the desired result,the plant have to resort to using imported reagents for accelerating slurry settlement.To revert this situation,the effect that can be obtained with the use of FeSO_(4)·7H_(2)O as an alternative to ordinary agents is investigated.Test results show that in comparison with the use of aluminium polychloride,a much better slime sedimentation result and improved quality of circulating water can be expected.Furthermore,FeSO_(4)·7H_(2)O is low in cost and free of chloride ions,and its use produces negligible effect on corrosion of coal washing equipment and structure of plant.It provides a new option for slurry water treatment.
作者
邢欢
何创库
XING Huan;HE Chuangku(Coal Washing Center,Shendong Coal Group,Yulin 719315,China)
出处
《选煤技术》
CAS
2021年第2期19-23,共5页
Coal Preparation Technology
