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投稿时间：2015-09-14 修订日期：2015-09-16
投稿时间：2015-09-14 修订日期：2015-09-16
中文摘要: 采用苏打还原焙烧—水浸工艺、硫酸焙烧—水浸工艺从某含锡钨萤石中矿中综合回收钨、锡和氟，考察苏打加入量、还原剂煤与苏打配比，硫酸加入量、碳酸铵加入量以及控制溶液终点pH等对回收的影响。研究表明，采用中矿两次硫酸焙烧——洗矿——碳酸铵浸出——盐酸浸出工艺，分解原料中99.95%的氟，钨总浸出率为98.04%，锡保留率为17.70%。该工艺指标较好，三废可达标排放，经济效益明显。
Abstract:W, Sn, and F were comprehensively recovered from low-grade tin-tungsten fluorite sheelite middling by soda reducing roasting-water leaching, and sulfuric acid roasting-leaching, respectively. The effects of soda addition, ratio of coal to soda, sulfuric acid addition, ammonium carbonate dosage, and end point pH value of solution on recovery were investigated. The results show that decomposition rate of fluorine is 99.95%, leaching rate of WO3 is 98.04%, and retention rate of tin is 17.70% by the process of twice sulfuric acid roasting, washing, ammonium carbonate leaching and hydrochloric acid leaching. This process has the advantages of good technical index, waste emission by standard, and obvious economic benefit.
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基金项目:湖南省科研院所技术发展专项重点项目（2014TF1009）
| Author Name | Affiliation | |
| LIU Zhen—nan | Hunan Research Institute of Nonferrous | brightlzn@126.com |
| LIU Jing—huai | ||
| WU Hai—guo |
引用文本：
刘振楠,刘景槐,吴海国.低品位锡钨萤石中矿综合回收试验[J].有色金属（冶炼部分）,2016(3):48-51.
LIU Zhen—nan,LIU Jing—huai,WU Hai—guo.Comprehensive Recovery of Low Grade Sn-W Fluorite Sheelite Middling[J].Nonferrous Metals (Extractive Metallurgy),2016(3):48-51.
刘振楠,刘景槐,吴海国.低品位锡钨萤石中矿综合回收试验[J].有色金属（冶炼部分）,2016(3):48-51.
LIU Zhen—nan,LIU Jing—huai,WU Hai—guo.Comprehensive Recovery of Low Grade Sn-W Fluorite Sheelite Middling[J].Nonferrous Metals (Extractive Metallurgy),2016(3):48-51.
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