Author:
Zhu Renfeng,Gu Guohua,Chen Zhixiang,Wang Yanhong,Song Siyu
Abstract
A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis. It was demonstrated that the collector isoamyl sodium xanthate (ISX) shows a good collection ability (recovery exceeded 95%) for azurite, but the recovery was relatively much lower for malachite (only near 80%) due to the different particle size distribution. The new type of xanthate ZH-1 has shown a high-efficiency collection performance for fine-grained malachite. The recovery achieved for −10 μm malachite was more than 95% when the ZH-1 dosage was 150 mg/L, while the average particle size of −10 μm malachite sharply increased from 4.641 μm to 9.631 μm. The batch flotation results indicated that the copper oxide flotation recovery increased from 79.67% to 83.38%, and the grade also raised from 18.08% to 18.14% after using the staged flotation technology with ZH-1 as collector during the flotation of −25 μm ore. It was confirmed that this technology was quite effective for the recovery of copper oxide at the Dishui Copper Processing Plant, which successfully increased its gross profit by 1.6 million US$ per year.
Funder
National Natural Science Foundation of China
Subject
Geology,Geotechnical Engineering and Engineering Geology
Reference24 articles.
1. Discussion on Vulcanization Mechanism of Malachite and New Technology of Flotation of Copper Oxide Ore;Liu,2007
2. Discussion on the Reasons for the Difficult Selection of Micronized Copper Oxide Minerals;Liu;China Min.,2009
3. Study on flotation method of fine-grained copper oxide minerals;Liu;China Min.,2010
4. Study on flotation method of copper oxide ore;Cheng;Miner. Resour. Prot. Utili.,2005
5. Interaction mechanism of magnesium ions with cassiterite and quartz surfaces and its response to flotation separation
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献