【摘 要】
：
A dual cell system with chalcopyrite anode and MnO2 cathode was used to study the relations between time and such data as the electric quantity and the dissolut
【机 构】
：
School of Chemistry and Chemical Engineering,Metallurgical Engineering College,College of Environmen
论文部分内容阅读
A dual cell system with chalcopyrite anode and MnO2 cathode was used to study the relations between time and such data as the electric quantity and the dissolution rates of the two minerals in the electro-generating leaching(EGL) and the bio-electro-generating leaching(BEGL),respectively.The results showed that the dissolution rates for Cu2+ and Fe2+ in BEGL were almost 2 times faster than those in EGL,and nearly 3 times for Mn2+; the electric output increased nearly by 3 times.The oxidation residue of chalcopyrite was represented by TEM and XRD,whose pattern was similar to that of the raw ore in EGL.The mechanism for leaching of CuFeS2-MnO2 in the presence of Acidithiobacillus thiooxidans was proposed as a successive reaction of two independent sub-processes for the anode.The first stage,common to both processes,is dissolution of chalcopyrite to produce Cu2+,Fe2+ and sulfur.The second stage is subsequent oxidization of sulfur only in BEGL,which is the controlling step of the process.However,the dissolution of MnO2 lasts until the reaction of chalcopyrite stops or the ores exhaust in two types of leaching.
其他文献
最近一段时间，上半年一系列经济数据陆续出炉。其中，GDP增速“破8”、创3年新低最受国内外舆论瞩目。西方媒体充斥着大量悲观议论，国际上甚至有人将“破8”看成中国经济“崩溃”
目的 提高耐多药患者治愈率.方法 本研究资料来自内蒙古乌兰察布市全球基金项目,对2009年3月至2013年5月期间登记及治疗的耐多药结核病患者93例进行临床数据分析.结果 给予耐
Rare earth organic complexes were introduced into the polymerization system, and the polymeric colloidal nanospheres containing rare earth complexes were prepar
It is important,for electronic application,to decrease the melting point of Sn-5Sb solder alloy because it is relatively high as compared with the most popular
By heat treating the alkaline earth fluorosilicate glass, transparent glass ceramics containing alkaline earth fluoride nanocrystallites were prepared. The lumi
每到夏天，黑龙江就会令人神往。盛夏的黑龙江，林海茫茫，草木青翠；良田漫漫，稻谷飘香，充满希望的黑土地上，到处呈现出奋发进取、蓬勃向上的盎然生机。
The high quality single-phase solution of CO2/Polystyrene was achieved,by analyzing the influential factors for polymer microcellular foaming extrusion.The curv
Pyrite oxidation rates were examined under various conditions in the presence of A.ferrooxidans and L.ferriphilum,in which different pulp concentration,inoculat
In order to characterize the efficiency of copper bioleaching from anilite using pure cultures of Acidithiobacillus ferrooxidans in the absence and presence of
Oxidation of arsenopyrite with Acidithiobacillus ferrooxidans was studied.The electrochemical results show that arsenopyrite is firstly oxidized to As2S2 at the