机械活化对辉钼矿浸出的影响  

Mechanical Activation Effect on Leaching of Molybdenite

作　　者：吴保林 赵中伟[2] 

机构地区：[1]深圳石化集团,广东深圳518028 [2]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《稀有金属与硬质合金》2004年第1期1-4,共4页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金资助课题(59934080)

摘　　要：研究了机械活化对辉钼矿浸出动力学的影响。机械活化处理使辉钼矿在HNO3-H2SO4溶液中的浸出反应的表观活化能逐步降低,但幅度不大。在行星式离心球磨机中剧烈活化40min后,浸出活化能较未处理时低约6kJ/mol。这是由于辉钼矿呈层状结构,层与层之间由微弱的范德华力维系,在受到外力作用时,很容易发生层间滑移,一定程度上化解了这种作用力。The effect of mechanical activation on leaching kinetics of molybdenite is studied.Mechanical treatment causes slight depression of apparent activation energy for leaching molybdenite in HNO_3-H_2SO_4 solution.After 40-minute intensive mechanical activation in planetary centrifugal ballmill,the activation energy becomes 6kJ/mol less than that for leaching of non-activated one.We ascribe this to the layered structure of molybdenite.When violent mechanical force is acted on molybdenite crystal,it is easy to obviate such force through inter-layer slip since the Van der Vals force between S-S layers is very weak.

关 键 词：机械活化 辉钼矿 浸出 

分 类 号：TF111.31[冶金工程—冶金物理化学]