Differential Cap, Differential Vent Cap, Differential Part Ningbo Xiangsheng Auto Parts Co., Ltd. , http://www.partsaa.com 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.