Most noble metal complex oxide ores, low grade ore, and often associated in the same deposits, a wide variety of symbiotic valuable metal components, and therefore, most of refractory ore rare metal, and has the following characteristics dressing:
1. The beneficiation process is complex, multi-stage and is a joint process of multiple mineral processing methods (for comprehensive utilization and recycling);
2. Frequently using fatty acids and their soaps for flotation, the impact of water quality is greater.
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