第5楼2005/04/03
http://www.instrument.com.cn/show/download/shtml/008020.shtml
第10楼2005/04/14
Copper sulfide concentrates -- Determination of gold and silver contents -- Fire assay gravimetric and flame atomic absorption spectrometric method
Abstract
Fire assaying comprises the following steps: crucible fusion, cupellation, parting (followed by flame atomic absorption spectrometry), retreatment, correction for blank contamination. The method is applicable for copper sulfide concentrates containing 15 % (m/m) to 60 % (m/m) copper, mainly in the form of chalcopyrite and related sulfide minerals, and gold contents from 0,5 g/t to 300 g/t and silver contents from 25 g/t to 1500 g/t.