以聚丙烯酸为絮凝剂的细粒黑钨矿絮团浮选

FLOTATION OF FINE WOLFRAMINE FLOCS WOLFRAMINE FLOCS USING POLYACRYLIC ACID AS FLOCCULANT

以聚丙烯酸为絮凝剂、油酸钠为捕收剂进行了细粒黑钨矿絮团浮选行为的研究。结果表明，尽管聚丙烯酸对黑钨矿的絮凝能力随其分子量的增大而增强，但中等分子量的聚丙烯酸表现了最好的絮团浮选效果。在ｐＨ６．８，ＰＡＡ－５１ｍｇ／Ｌ，油酸钠１００ｍｇ／Ｌ的条件下进行了－２０μｍ黑钨矿－石英混合矿的絮团浮选分离，获得了钨精矿品位６８．４８％ＷＯ＿３．回收率９１．３１％的分选指标。

The study on flotation of fine wolframine flocs is carried out using polyacrylicacid as flocculant and oleic acid as collector.The results show that the flocculating effect in-creases with molecular weight,but polyacrylic acid with medium molecular weight has thebest flocculating effect.Under the conditions of pH 6.8, PAA-5 dose of 1mg/L and oleicacid dose of 100mg/L,flocculation-flotation separation of flocs of-20μm wolframinequartz mixture was carried out ,resulting in tungsten concentrate grade of 68. 48%WO_3 andrecovery of 91. 31%.