Study on the Pretreatment Technology of Refractory Gold Concentrate Containing High Arsenic and Sulfur
Received date: 2014-05-21
Revised date: 2014-06-27
Online published: 2014-12-24
According to the mineralogical characteristics of refractory gold concentrate containing high arsenic and sulfur，we propose a sec-roasting pressure acid leaching combined pretreatment process，and focus on the impact of the process on the removal effect for arsenic，sulfur and iron.The results show that after a roasting of refractory gold concentrate，then by two stage roasting under the conditions of calcination temperature 700 ℃ and roasting time 120 min，we obtain that As content is only 0.51% and S content is 0.34% in calcine.At the same time，the removal rate of As，S and Fe are more than 95% by pressure acid leaching，and achieve good results.
MA Yutian , CHEN Dalin , CHEN Zhiyu , ZHONG Qingshen , HUANG Hujun , DU Yanjun . Study on the Pretreatment Technology of Refractory Gold Concentrate Containing High Arsenic and Sulfur[J]. Gold Science and Technology, 2014 , 22(4) : 103 -107 . DOI: 10.11872/j.issn.1005-2518.2014.04.103
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