| 摘要: |
| 对某尾砂进行了综合回收试验研究，在磨矿制度条件试验、浮选药剂条件试验的基础上进行了全流程开路试验，得到锌品位6.23%，回收率61.56%的锌粗精矿；锡品位6.00%，回收率40.00%的锡粗精矿；尾矿中含锌0.10%，锡007%，铁3.92%，砷0.17%.对锡石单矿物进行了浮选机理试验研究，研究发现BHA对3种矿物的捕收能力顺序为锡石>方解石>石英，且浮选锡石的最佳pH为9，Cu2+对锡石有明显的抑制作用，Pb2+对锡石有比较明显的活化作用. |
| 关键词: 尾砂 综合回收 浮选 浮选机理 |
| DOI： |
| 分类号:TD922 |
| 基金项目:国家水体污染控制重大科技专项资助项目(2010ZX07212-008，)；环保公益性行业科研专项资助项目（201109005，201209009）；湖南省环保科技资助项目［2012］347号 |
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| Comprehensive recycling and floatationmechanism of cassiterite in tailings |
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Qi Yan,You Xiangyu,Xiang Renjun,Zhang Qinmei,Liu Zhan,Qiu Yaqun
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Hunan Research Academy of Environmental Sciences,Changsha 410004,China
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| Abstract: |
| The experiment was illustrated on comprehensive recycling to certain tailings. Based upon conditioning tests on grinding system and floatation reagent, the open circuit test was conducted, from which 623% of Zinc grade was obtained with a recycling rate of 61.56% of Zinc crude concentrate and 6.00% of cassiterite grade was gotten with a recycling rate of 40.00% of cassiterite crude concentrate. Specifically, the contents of Zinc, Cassiterite, Fe and Arsenic in the very tailings were 0.10%, 0.07%, 3.92% and 0.17% respectively. A research on floatation mechanism of Cassiterite’s monomineral was also experimented which discoverd the collecting capacity of BHA to the next 3 minerals was put in order with Cassiterite>Calcite>Quartz. Besides, the best pH for floatation of Cassiterite was 9 and Cu2+ was able to restrain cassiterite that was very easy to be activated by Pb2+. |
| Key words: tailings comprehensive recycling floatation floatation mechanis |
