【摘 要】
：
The removal of molybdenum from a copper ore concentrate by sodium hypochlorite leaching was investigated. The results show that leaching time, liquid to solid r
【机 构】
：
College of Chemistry and Chemical Engineering
论文部分内容阅读
The removal of molybdenum from a copper ore concentrate by sodium hypochlorite leaching was investigated. The results show that leaching time, liquid to solid ratio, leaching ternperature, agitation speed, and sodium hypochlorite and sodium hydroxide concentrations all have a significant effect on the removal of molybdenum. The optimum process operating parameters were found to be: time, 4 h: sodium hydroxide concentration, 10%; sodium hypochlorite concentration, 8%; liquid to solid ratio, 10:1; temperature, 50℃; and,agitation speed, 500 r/min. Under these conditions the extraction of molybdenum is greater than 99.9% and the extraction of copper is less than 0.01%. A shrinking particle model could be used to describe the leaching process. The apparent activation energy of the dissolution reaction was found to be approximately 8.8 kJ/mol.
其他文献
英国工业革命是一场改变社会生活的历史巨变,作为短期内直接遭受工业革命负面影响的下层民众,其基本生存状况与组成值得关注。这篇论文阐述了在英国工业革命的历史背景下,下
为了查明厚松散层覆盖地区的立井井筒在施工及维护过程中出现的注浆及破坏问题,采用反射地震波法对其进行无损检测.利用反射地震波法进行井壁环向和纵向测线布置,通过所获得
SMS4 is a 128-bit block cipher used in the WAPI standard for wireless networks in China. In this paper, we analyze the security of the SMS4 block cipher against
《]孟子》一书中包含着丰富的生态伦理思想。《孟子》的生态伦理思想的产生既与当时特定的社会环境有关同时又是受孟子“性善论”思想的影响。研究分析孟子的生态伦理想对我
本文阐述了留守儿童生活现状、留守儿童问题的成因、如何利用公共图书馆为留守儿童服务的问题。
This article describes the current situation of left-behind children,
A novel compound[C12Bz(3-MeQl)](TCNQ)([Cl2Bz(3-MeQl)]+=1-(3,4-dichlorobenzyl)3-methlquinoline cation,TCNQ-=7,7,8,8-tetracyanoquinodimethanide anion)has been syn
Since the existing single-layer networked control systems have some inherent limitations and cannot effectively handle the problems associated with unreliable n
A new coordination polymer [Ni(3-bpo)(/M-bdc)(C2H5OH)2]n (1, 3-bpo=2,5-bis(3-pyridyl)-1,3,4-oxadiazole, m-H2bdc=1,3-benzenedicarboxylic acid) was solvothermally
信息时代给图书馆的生存定位带来了巨大的冲击,图书馆应对自身的存在价值和发展方向深刻反省和重新定位,与时俱进才能适应时代要求。文章阐明在知识经济条件下图书馆的发展正
A pressure-based algorithm for the prediction of cavitating flows is presented. The algorithm employs a set of equations including the Navier-Stokes equations a