辉钼矿单矿物化学全分析

Analysis of Molybdenite

本文拟定了一个简单,快速的分析流程,200—300mg试样可完成辉钼矿单矿物中Mo、S、W、Re,As、Sn、Fe、Al、Ti、Bi、Cu、Pb、Zn、Co、Ni、Ca、MS、Mn等项主、次、痕量元素测定。同时,本文就基体元素Mo对其它元素测定的干扰和采用TBP萃淋树脂富集分离Re和W的条件作了考查,对Mo的硫氰酸盐光度测定法作了改进。所拟定的方法用于辉钼矿单矿物和钼精矿全分析,所得结果满意。

A new scheme for the analysis of molybdenite was proposed. The elements such as Cu, Pb, Zn, Co, Ni, Mn, Ca and Mg were determined by AAS after decomposing the sample with aqua regia. Another sample was fused with NaOH-Na2O2 and leached with water, the filtrate was used to determine Mo, Re, W, As and Sn. The precipitate on filter paper was dissolved in HCI and was used to determine Fe, Ti and Bi.W(Ⅵ) and Re(Ⅵ) were separated from Mo(Ⅵ) with TBP resin.