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Detailed explanation of the beneficiation process of antimony ore
Mar 19, 2025Antimony ore, as a rare and widely used mineral, plays an important role in many fields such as batteries and catalysts. In order to meet the growing market demand, it is particularly important to efficiently select high-purity antimony concentrate from a large amount of ores. Choosing the right antimony ore dressing technology can not only improve the extraction rate of antimony, but also significantly reduce production costs.
When selecting the selection method of antimony ore, it is necessary to comprehensively consider the physical and chemical properties such as ore type, mineral structure and composition, while taking into account the content of valuable components in the ore and the economic benefits of mineral processing. At present, the commonly used antimony ore dressing process methods in actual production mainly include AI intelligent photoelectric sorting, gravity separation, heavy medium separation and flotation.
Flotation is one of the most commonly used beneficiation methods for antimony minerals. Antimony sulfide minerals are easy-to-float minerals, and the ore grade can be significantly improved by flotation. In the flotation process of stibnite, lead salts are often used as activators, and copper salts or lead salts can also be used for activation, and then collectors are used for flotation. Commonly used collectors include butyl xanthate, shale oil and ethyl thiourea mixture, etc., while frothers are often selected from pine oil, No. 2 oil, etc.
For difficult-to-float ores such as antimony oxide ore, a single flotation process is usually used to treat a single stibnite. For sulfide-oxidation mixed antimony ore, coarse-grained minerals are treated by gravity separation, and fine-grained minerals are treated by flotation or gravity separation + flotation combined process. When the antimony content in the oxide ore exceeds a certain proportion, it is usually directly reduced and smelted to extract metallic antimony without beneficiation treatment. For fine-grained oxide ores or refractory oxide ores, the ore is first reduced to metallic antimony and then treated by conventional flotation.Therefore, the antimony concentrate after beneficiation treatment has a higher grade and can be further processed to extract higher purity antimony compounds for use in electronics, ceramics, glass and other industrial fields. With the advancement of science and technology and industrial development, the demand for antimony will continue to grow. Therefore, continuous research and development of more efficient and environmentally friendly antimony ore beneficiation technology and equipment, and improving the utilization rate, beneficiation recovery rate and purity of antimony ore resources will better protect the environment and resources while meeting market demand.