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The contribution of suspension permanent magnets to the development of mineral processing in China
With the acceleration of the development process of the global industrial economy, the global mining industry has become the industry’s leading development force. Suspension permanent magnet are one of the most commonly used and highly versatile machines in the industry. Separation and suspension permanent magnets are screening equipment used to remove iron powder from powder particles.
Suspension permanent magnets are commonly used in the mining, wood, kiln, chemical, food and other industries. In the mine beneficiation process, efforts to improve the grade of lean iron ore and improve the comprehensive utilization of resources are the problems that need to be solved in the past decades of continuous exploration and technical research in China. After 13 years, the design theory of the suspension type permanent magnet has been innovated, it has broken through the bottleneck of the limitation of the manufacture of the suspension type permanent magnet, overcome the key technical barriers to the strong magnetic separation of the weak magnetic ore, and independently developed a series of suspension permanent magnets. For large-scale industrial production applications, the domestic market share is over 90%. At the same time, the utilization rate of low-grade weak magnetic mineral resources such as hematite, ilmenite, manganese ore, black tungsten ore slime, and Sichuan rare earth ore has been greatly improved.
For a long time, the domestic sorting efficiency of weak magnetic ore is relatively low, and more than 95% of non-metallic mineral resources cannot be efficiently developed and utilized because of weak magnetic impurities. Suspension permanent magnets mainly rely on imports or imitations. The low radiation intensity of the particles, the easy blocking of the magnetic medium (the decisive substance), the low recovery rate, and the difficulty of maintenance have become major technical barriers worldwide. After 13 years in China, it has innovated the design theory of suspension permanent magnets, broke through the bottlenecks in the manufacture of suspension permanent magnets, and overcome the key technical barriers to strong magnetic separation of weak magnetic ore. More than 20 countries including India, Australia, Brazil, etc., the equipment performance and economic and technical indicators have reached internationally high levels, making China the world’s most important country to master the key technologies of large-scale suspension permanent magnet.
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Contact: Bright Han
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