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发明公开
CN109967227A 一种降低尾矿中铅、锌重金属含量的综合回收方法 无效 - 驳回

一种降低尾矿中铅、锌重金属含量的综合回收方法
摘要：
本发明提出的是一种降低尾矿中铅、锌重金属含量的综合回收方法。通过在原工艺中提高磨矿细度、调整浮选浓度、提升药剂和石灰调节的PH值的综合回收工艺方法。所述磨矿细度‑200目提高至80%～90%。所述浮选浓度调整控制在35%～45%。所述药剂和石灰调节的PH值在相同浓度及药剂条件下，由7～8提升至9～10。本发明采用通过提高磨矿细度、调整浮选浓度、提升药剂和石灰调节的PH值综合回收的工艺方法，降低了尾矿中铅、锌重金属的品位，尾矿中含铅降至0.2%以下、含锌降至0.2%以下，使得最终的排放尾矿重金属含量符合尾矿排放环保标准，提高了多种有价金属的回收率。适宜作为降低尾矿中重金属含量的综合回收方法应用。
摘要（英）：

The invention provides a comprehensive recovery method for reducing the content of lead and zinc in tailings. The comprehensive recovery process method is used for improving the ore grinding fineness,adjusting the flotation concentration and improving the pH value of medicament and lime regulation in an original process. The fineness of the ore grinding fineness ranges from -200 meshes to 80%-90%; the flotation concentration is adjusted and controlled to be 35%-45%; and the pH value regulated by the medicament and the lime is increased from 7-8 to 9-10 under the same concentration and medicament condition. By adopting the comprehensive recovery process method for improving the ore grinding fineness, adjusting the flotation concentration and improving the pH value of medicament and lime regulation, the grade of lead and zinc heavy metals in the tailings is reduced, the lead content is reduced to be 0.2% or below, the zinc content is reduced to be 0.2% or below in the tailings, the final discharge tailing heavy metal content meets the tailing emission environmental protection standard, and the recovery rate of various valuable metals is improved. The comprehensive recovery method issuitable for being applied as a comprehensive recovery method for reducing the content of heavy metals in tailings.

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