| Autor: |
SONG Changxu, YE Guohua, KANG Xuanxiong, ZHU Siqin, RONG Yiyang, XIANG Xinyue, ZHANG Yun |
| Předmět: |
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| Zdroj: |
Mining & Metallurgy (10057854); Aug2024, Vol. 33 Issue 4, p547-555, 9p |
| Abstrakt: |
A sulfur oxygen mixed copper ore in Laos has a copper grade of 1.23% and a copper oxidation rate of 26.02% with gold of 3.03 g/t, mostly existing in intergranular and encapsulated forms. The ore contains 10% bright gold, which can be pre-enriched by gravity separation. Copper sulfide minerals and other forms of gold minerals accounting for a large proportion are suitable for flotation. Adopting a combined heavy flotation process for comprehensive recovery of copper and gold, the loss of clear gold can be avoided, and the technical indicators obtained are: the gold grade of the re-selected concentrate is as high as 915.50 g/t, and the gold recovery rate is 12.09%. Under the optimal process parameters of using 1 000 g/t sodium sulfide and 500 g/t ammonium sulfate as activators with the collectors of 60 g/t pentyl xanthate and 60 g/t butyl ammonium black powder, the copper grade in the flotation concentrate reached 27.48%, the operating recovery rate was 91.38%, the gold grade was 59.25 g/t, and the operating recovery rate was 90.93%, which could achieve a comprehensive recovery of copper and gold. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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