A stepwise carbochlorination-chemical vapor transport(SC-CVT) technique is proposed for separation of thorium from mixed bastnaesite-monazite concentrate.
The RE impurities in 4N lutecium oxide are determined by ICP-AES in this paper.The effects of matrix concentration acidity on tested element are analysed.
The results indicated that the trace elements molybdenum and zirconium increased considerably the gas yields of the lignitic organic matter while selenium did not.