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| Study on Process of a Refractory Sediment-hosted Oxygen-Sulfur Mixed Copper Ore Abroad |
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Received:November 15, 2022
Revised:November 29, 2022
Accepted:December 06, 2022
Published Online:April 21, 2023
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| DOI： |
| KeyWord:dolomite; oxygen-sulfur mixed copper ore; regrinding of concentrate; (NaPO3)6 |
| Author | Institution |
| Wang Gang |
JCHX Mine Management Co., Ltd., |
| Yu Yunlong |
JCHX Mine Management Co., Ltd., |
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| Abstract: |
| The process mineralogical analysis of copper ore in a foreign deposit shows that the valuable element in the ore is copper, the content of which is 2.17%. Copper mainly exists in the form of malachite and chalcocite, and these minerals have a complex associative relationship, most of which are associated with gangue minerals in xenomorphic-granular and irregular texture. Some malachite and chalcocite have small particle size and are closely associated with limonite. The majority of gangue minerals are dolomite, the content of which is 83.97%. The ore type is sediment-hosted oxygen-sulfur mixed copper ore. In view of the complex refractory copper ore, this paper adopts the process of "First copper sulfide and then copper oxide". The regrinding process of copper sulfide roughage concentrate was used, and NaHS and (NH4)2SO4 were used as activators of copper oxide and (NaPO3)6 as inhibitors of gangue minerals. Finally, high grade copper sulfide concentrate (Cu 62.37%) and low calcium and magnesium content (CaO+MgO 12.50%) copper oxide concentrate (Cu 30.08%) were obtained, and the comprehensive recovery rate of copper was 82.47%, which realized the efficient recovery of this kind of ore. |
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