硫酸盐型盐湖卤水盐田钾矿浮选尾矿堆浸溶钾工艺研究

Study on the Process of Leaching Potassium from Flotation Tailings of Potassium Ore in Sulfate Type Salt Lake Brine Salt Field

中文关键词:  堆浸  浮选尾矿  罗布泊盐湖  钾

英文关键词:Heapleaching  Flotationtailings  Lop Nur SaltLake  Kali

中文摘要:

      以罗布泊盐湖卤水含硫酸盐矿浮选尾矿为原料，高钠低钾卤水为浸取液，采用原位堆浸方法浸取硫酸钾浮选尾矿中 K+、Mg2+、SO42-等有价元素，实现罗布泊盐湖卤水盐田含硫酸盐矿浮选尾矿中 K+、Mg2+、SO42-等有价元素的综合回收利用。试验数据表明:经过堆浸工艺，实现了浮选尾矿中 K+的回收；尾矿中 K+含量从 3.84%降至 0.83%；K+收率 ≥ 77%，Mg2+收率 ≥79%，SO42-收率 ≥73%，浸取液 K+含量达到 1.42%。

英文摘要:

      Using the flotation tailings of sulfate containing ore in the brine of Lop Nur Salt Lake as raw material andhigh sodium andlow potassium brine as leaching solution，the valuable elements such as K+， Mg2+，SO42-in the potassium sulfate flotation tailings are extracted using in-situ heap leaching method， achieving comprehensiverecovery and utilizationof valuable elementssuchas K+，Mg2+，SO42-inthe flota-tion tailings of sulfate containing ore in the brine salt field of Lop Nur Salt Lake. The experimental data shows that through heap leaching process，the recovery of K+ in flotation tailings has been achieved，and the K+content in tailings has decreased from 3.84% to 0.84%；The yield of K+≥77%，the yield of Mg2+≥ 77%，theyieldofSO42-≥73%，andtheK+contentintheleachingsolutionreaches1.4%.