硝酸铅活化黑钨矿浮选的研究  

STUDY ON\=WOLFRAMITE FLOTATION ACTIVATED BY LEAD NITRATE

作　　者：陈万雄[1] 叶志平[2] 

机构地区：[1]中南工业大学 [2]广州有色金属研究院

出　　处：《广东有色金属学报》1999年第1期13-17,共5页Journal of Guangdong Non-Ferrous Metals

摘　　要：硝酸铅对黑钨矿浮选有显著的活化作用，采用硝酸铅作活化剂对含ＷＯ３１．６２％的柿竹园黑钨细泥进行浮选试验，获得黑钨精矿含ＷＯ３６６．０４％，回收率９０．３６％．本文从浮选溶液化学角度，对硝酸铅水解后的各成分进行分析计算表明，在ｐＨ小于９．５时，Ｐｂ２＋和Ｐｂ（ＯＨ）＋是起活化作用的主要成分．硝酸铅可使黑钨矿表面的ζ电位由负变正。Lead nitrate imposes obvious activation effect on wolframite flotation. When lead nitrate was applied as activator to conduct flotation test for wolframite slime in Shizhuyuan Mill (the content of WO\-3 is 1\^62%), the wolframite concentrate containing WO\-3 66\^04% can be obtained with the recovery of 90\^36%. Viewing from the angle of flotation solution chemistry and calculating all components after the hydrolysis of lead nitrate, we have got the results that when pH is less than 9\^5, Pb\+\{2+\} and Pb(OH)\++ are the main constituents for activation: lead nitrate can change Zeta potential on the wolframite surface from negative to positive; lead ions promote the effect of collectors by their special adsorption on wolframite surface.

关 键 词：黑钨矿 浮选 硝酸铅 活化 选矿 

分 类 号：TD954[矿业工程—选矿] TD923