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| Experimental exploration of strong oxidation refining in silver separation furnace |
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Received:June 15, 2022
Revised:September 24, 2022
Accepted:September 30, 2022
Published Online:February 23, 2023
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| DOI： |
| KeyWord:Strong oxidation refining; Silver separation furnace; Oxygen concentration; Furnace period |
| Author | Institution |
| ZHOU Xian-hui |
Yunnan Tin Industry Co,Ltd |
| WANG Run-dong |
Yunnan Tin Industry Co,Ltd |
| XIE Keng |
BGRIMM Technology Group |
| LIU Qing-dong |
Yunnan Tin Industry Co,Ltd |
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| Abstract: |
| Based on the mechanism of preferential oxidation of impurity elements in precious lead under oxidation conditions, this paper realizes the oxidation volatilization or slag removal of impurity elements, so as to achieve the purpose of silver purification. To explore the industrial test of step removal of arsenic, antimony, bismuth and copper by strong oxidation refining under different oxygen concentration in silver separation furnace, so as to accelerate the oxidation and volatilization of impurity elements and slag forming speed and shorten the furnace life. The results show that when the oxygen concentration is controlled at 25 ~ 30%, the furnace period of arsenic and antimony removal is the shortest; When the oxygen concentration is controlled at 30 ~ 50%, the furnace period of bismuth removal is the shortest; When the oxygen concentration is controlled at 88%, the copper removal furnace period is the shortest. Through the optimal control of oxidation refining step impurity removal in silver separation furnace, the furnace life can be shortened by 2 ~ 3 days. |
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