Magnetic iron ore beneficiation process

Magnetite, with its strong magnetism and high iron content, has become the main force in the global iron ore supply. As the country with the largest magnetite reserves in the world, China provides a solid foundation for a stable supply of iron ore. The beneficiation process of magnetite is relatively simple, requires little equipment investment, and is suitable for a variety of ore properties, so it has a wide range of applications.

In the mineral processing process, single magnetic separation used to be the mainstream. However, with the changes in the properties of ore, single magnetic separation can no longer meet the current mineral processing needs. Therefore, multi-process combination, such as magnetic-gravity combined and maglev combined processes, has gradually become the focus of research. These combined processes can effectively improve the mineral processing effect, especially when processing low-grade iron ore with complex mineral composition, showing significant advantages.

The combined magnetic and gravity process effectively removes non-magnetic minerals, reduces subsequent processing volume, and improves the quality of iron concentrate by adding a gravity separation step before magnetic separation. The maglev combined process combines the advantages of magnetic separation and flotation, and achieves effective separation of magnetic and non-magnetic minerals through three stages of roughing, selection and recovery, improving the grade of concentrate while reducing the content of harmful elements.

These advanced mineral processing processes not only improve the quality and recovery rate of iron ore concentrate, but also help reduce production costs and achieve efficient utilization of iron ore resources. With the advancement of technology, the magnetite beneficiation process will continue to be optimized to adapt to changing market demands and environmental protection requirements.