复合絮凝剂在钢板酸洗液除硅工艺中的应用

冷轧工艺酸洗液的除硅效果直接影响到副产品氧化铁粉的质量,由于含硅杂质的粒度小,直接采用机械分离的方法很难去除。通过添加阳离子和阴离子复合絮凝剂,利用正交试验研究了絮凝沉降法去除含硅杂质的工艺,研究结果表明复合絮凝剂可有效去除酸洗液中的含硅杂质,并且除硅效果显著。

Application of composite flocculant for removal of silicon from pickling liquor of steel sheet

The efficiency of silicon removal from pickling liquor in cold rolling process affects the quality of the by-product: iron oxide powder.Since the silicon-containing impurity is characterized by very fine particle size,it can hardly be removed directly by mechanical method.Through adding cationic and anionic composite flocculant,the effect of flocculation sedimentation process on silicon-containing impurity removal was studied by orthogonal test.The results of the test showed that,composite flocculant could effectively remove the silicon-containing impurity from pickling liquor,and the silicon removal effect was remarkable.