Antonijević M M, Dimitrijević M D, Stevanović Z O, Serbula S M, Bogdanovic G D
University of Belgrade, Technical Faculty Bor, Bor, Serbia.
J Hazard Mater. 2008 Oct 1;158(1):23-34. doi: 10.1016/j.jhazmat.2008.01.063. Epub 2008 Feb 1.
The flotation tailings pond of the Bor Copper Mine poses a great ecological problem not only for the town of Bor but also for the surrounding soils and watercourses. Since the old flotation tailings contain about 0.2% of copper on the average, we investigated their leaching with sulphuric acid in the absence and presence of an oxidant. The aim was to determine the leaching kinetics of copper and iron as affected by various factors such as: the pH value of the leach solution, stirring speed, pulp density, particle size, concentration of ferric ions, temperature and time for leaching. The average copper and iron recovery obtained was from 60% to 70% and from 2% to 3%, respectively. These results indicate that the old flotation tailings pond represents an important source of secondary raw material for the extraction of copper and that it should be valorized rather than land reclamation. At the end of the paper, a mechanism of dissolution of copper and iron minerals from the tailings was described.
博尔铜矿的浮选尾矿池不仅给博尔镇，也给周边土壤和水道带来了严重的生态问题。由于旧浮选尾矿平均含铜约0.2%，我们研究了在有无氧化剂存在的情况下用硫酸对其进行浸出。目的是确定铜和铁的浸出动力学，其受多种因素影响，如：浸出溶液的pH值、搅拌速度、矿浆密度、粒度、铁离子浓度、温度和浸出时间。获得的铜和铁的平均回收率分别为60%至70%和2%至3%。这些结果表明，旧浮选尾矿池是提取铜的重要二次原料来源，应加以综合利用而非进行土地复垦。论文结尾描述了尾矿中铜和铁矿物的溶解机制。
