中文摘要：

经过一系列的选矿工艺流程处理后的氰化尾矿,粒度比较细,难以沉降,导致回水中固含量比较高,直接回用时影响浮选指标,从而限制了回水利用率的提高。针对氰化尾矿难以絮凝沉降的问题,本文研究了无机絮凝剂氧化钙、有机絮凝剂阴离子型聚丙烯酰胺（HPAM）及实验室研制絮凝剂（GGQ）的最佳投加量及调整尾矿浆不同pH值条件下絮凝剂的除浊性能。提出并使用＂絮凝速度提高率＂进行实验室自制药剂（GGQ）与市售药剂絮凝性能比较,结果表明GGQ的絮凝速度提高率为70.76%：絮凝沉降60 min,氰化尾矿浆pH值为7时添加GGQ絮凝后体系剩余浊度为34.62 NTU,综合比较絮凝速度提高率及除浊性能得出GGQ具有比HPAM、CaO优异的絮凝效果。

英文摘要：

Due to a series of flotation, the particle size of cyanide railings is relatively small, the cyanide tailings slurry become harder to settle, there more fine particle in the backwater, which will reduce the flotation index and the rate of backwater. To solve this problem, this paper is intended to research on flocculent settling of the cyanide tailings slurry, which has researched on the dosage of inorganic flocculent CaO, organic flocculent HPAM and self-made flocculent（GGQ）, meanwhile researched on the removal performance of turbidity for cyanide tailings at different value of pH. In this paper, proposed the increased rate of flocculation speed, which was used to compare the laboratory homemade pharmacy（GGQ） with the commercially available pharmaceutical, the values of GGQ was 70.76 %, when setting time was 60 min and pH was 7, added GGQ, the remaining turbidity was 34.62 NTU. By comprehensive compare we can find that GGQ has a better flocculation effect than HPAM and CAO for the increased speed rate and the removal performance of turbidity.