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›› 2013, Vol. 13 ›› Issue (2): 224-229.

• 过程与工艺 • 上一篇    下一篇

由伴生明矾石尾矿制备铝钾产品

秦鸣 赵伟 薛天艳 余志辉 赵宏欣 李洁1 宋静 郭强 阮仁满 齐涛   

  1. 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所绿色过程与工程院重点实验室湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所 湿法冶金清洁生产技术国家工程实验室 湿法冶金清洁生产技术国家工程实验室 低品位难处理黄金资源综合利用国家重点实验室,紫金矿业集团股份有限公司 中国科学院过程工程研究所绿色过程与工程重点实验室
  • 收稿日期:2012-12-29 修回日期:2013-03-04 出版日期:2013-04-20 发布日期:2013-04-20
  • 通讯作者: 赵伟

Preparation of Al- and K-containing Products from Associated Alunite Ore Tailings

QIN Ming ZHAO Wei XUE Tian-yan YU Zhi-hui ZHAO Hong-xin, LI Jie SONG Jing GUO Qiang RUAN Ren-mang QI Tao   

  1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology，Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Key Laboratory of Multiphase Complex System, Institute of Process Engineering Institute of Process Engineering, Chinese Academy of Sciences National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology National Engineering Lab. of Biohydrometallurgy, General Research Institute for Nonferrous Metals Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2012-12-29 Revised:2013-03-04 Online:2013-04-20 Published:2013-04-20
  • Contact: ZHAO Wei

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摘要： 提出了伴生明矾石矿尾矿中温焙烧-低浓度酸浸处理工艺，尾矿经700℃焙烧3 h后，在液固比为6 mL/g，10%硫酸中90℃水溶搅拌3 h，Al和K浸取率分别达83%和93%. 通过自然结晶和蒸发结晶分别得到了明矾和水合硫酸铝晶体，出钒率超过20%，以氧化物记的明矾及水合硫酸铝的回收率均达到65%左右，初步实现了铝、钾产品的分离，在保持较高Al, K浸取率的前提下降低了能耗、酸耗.

关键词: 明矾矿, 焙烧, 酸浸, 结晶, Al, K

Abstract: A medium temperature calcination-low concentration acid leaching process was introduced to treat the associated alunite ore tailings. After calcination of the tailings at 700℃ for 3 h, and following leaching at 90℃ for 3 h in 10% sulfuric acid system with the acid/ore ratio of 6 mL/g, the leaching rates of Al and K reached 83% and 93%, respectively. Alum and aluminum sulfate hydrate crystals were obtained through natural and evaporation crystallization. The recovery rate of alum and aluminum sulfate hydrate crystals was up to 65%. This work provides a method to separate aluminum and potassium products preliminarily under the premise of reduction of energy and acid consumption.

Key words: alunite, calcination, acid leaching, crystallization, Al, K

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