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, and reducing environmental load in the non-ferrous materials industry that are imminent problem to realize its sustainable development. Taking "reduce, reuse, recycle" as the principle, launching three...污染的有效措施;缓解资源约束,减轻环境压力;实现全面建设小康社会目标,促进人与自然和谐的必然选择. 2.1 坚持"3R"原则 "减量化(Reduce),再利用(Reuse),再循环(Recycle)"3R原则,是循环经济的核心内容,是提高资源,能源利用效率,保护生态和促进经济发展所必须遵循的基本原则. 2.1.1 减量化原则 减量化原则属于输入端方法,旨在减少进入生......
has the advantages of no acid proof equipment, easy to recycle catalyst and no acidic waste water emission. The optimal parameters of transesterification are as follows: 25 ℃ of reaction temperature......
, Beijing 100190, China) Abstract: In order to decontaminate the nickel wastewater and to recycle the ions, a type of sulfate-reducing bacteria was isolated and purified from activated sludge......
recycle of tungsten, long flow and low recovery in wolframite flotation separation, an efficient fine particle separation machine, with cyclonic-static microbubble flotation column was used to strengthen......
of friction coefficient during hot rolling process was carried out by Brent method, and evolution rule of friction coefficient in a rolling recycle was pointed out, which provides references......
to solid ratio on vanadium leaching rate and the leaching solution recycle experiment were studied. The results show that the leaching rate of vanadium is 88.67% under the condition of 12% NaOH and 4......
University of Science and Technology, Kunming 650093, China Received 25 May 2014; accepted 8 December 2014 Abstract: In order to recycle waste Sn-based alloys, the vapor-liquid phase equilibrium composition......
, recycle used wasted HCl and reduce the chloride ion discharge. The extraction and stripping of indium with P204 and TBP/P350 were studied under different parameters, such as the concentration......
realizes the efficient recycle of RE. Key words: rare earth fluoride molten salt slag(REFMSS); Na2CO3; roast; transformation mechanism; leach 稀土因其具有独特且优异的光,电,磁等方面的性能,被广泛用于光电,磁性以及合金等材料领域[1-4].世界稀土资源总量较大,但是......
of the products prepared by F-R activation method was higher than that of the products prepared by LS-R activation method. On the whole, both activation methods can be used to recycle and reduce......