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发明公开
CN108554618A 一种铜铅锌矿的选矿方法 有权

一种铜铅锌矿的选矿方法
摘要：
本发明涉及一种铜铅锌矿的选矿方法，属于选矿技术领域。本发明将铜铅锌矿破碎、磨矿至粒径小于0.074mm占70~80%，加水调浆至矿浆浓度为60~70%，加入浮选药剂进行铜铅混合浮选，得到铜铅混合精矿和铜铅浮选尾矿；在铜铅混合精矿中加入石灰调节矿浆pH至为8~10，然后加入羧甲基纤维素混合均匀并进行磁选得到铜精矿和铅尾矿；将铜铅浮选尾矿细磨至粒径小于0.037mm占88~95%，加入硫酸和氧化剂混合均匀，在温度为50~60℃、搅拌下进行氧化浸出反应15~20min；在温度为55~65℃、搅拌条件下加入中性剂并进行中性浸出10~20min得到中性浸出液和中性浸出渣；将中性浸出液净化后进行电积反应，阴极沉积得到锌。本发明方法采用采用浮选、磁选和浸出的联合工艺对铜铅锌矿进行回收，得到高品位的铜、铅和锌。
摘要（英）：

The invention relates to a beneficiation method for copper lead zinc ores, and belongs to the technical field of beneficiation. The copper lead zinc ores are crushed and grinded until 70-80% of particle sizes are lower than 0.074 mm; water is added for pulping until the pulp concentration is 60-70%; a flotation medicament is added for copper and lead mixed flotation to obtain copper and lead mixedconcentrations and copper and lead flotation tailings; lime is added in the copper and lead mixed concentrations to adjust the pulp pH as 8-10; then, carboxymethylcellulose is added for uniform mixing and magnetic separation to obtain copper concentrates and lead tailings; the copper and lead flotation tailings are finely grinded until 88-95% of particle sizes are lower than 0.037 mm; sulfuric acid and an oxidizing agent are added for uniform mixing and oxidizing leaching by 15-20 min at a temperature of 50-60 DEG C under stirring; a neutralizing agent is added at a temperature of 55-65 DEG Cunder stirring for neutral leaching by 10-20 min to obtain neutral leaching liquid and neutral leaching slag; and the neutral leaching liquid is purified for electrodeposition and cathodic depositionto obtain zinc. The method adopts the combined process of floatation, magnetic separation and leaching to recover the copper lead zinc ores to obtain high-grade copper, lead and zinc.

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