Brazil Magnetite Beneficiation Project

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Project Location:Brazil in South America

Ore: Magnetite

Grade of iron concentrate: 67.81%

Recovery rate of iron concentrate: 92.69%

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Project Background

Magnetic separation plays a dominant role in the separation of magnetite ores. Bailing Machinery adopts methods such as gravity separation, magnetic separation, flotation, roasting and magnetic separation, as well as combined processes for the treatment of weakly magnetic lean iron ores. Magnetic separation is directly adopted for the treatment of strongly magnetic iron ore.

Technical solution

Introduction to Magnetite
Magnetite is widely distributed and occurs in metamorphic and endophytic deposits. Magmatic deposits are typically found in Kiruna, Sweden. The direct formation of ore pulp related to volcanic activity is typically represented by the Lac iron mine in Chile. The iron ore formed by contact metamorphism is typically found in Daye Iron Mine, China. Iron ore formed from iron-bearing sedimentary rock layers through regional metamorphic processes is of low grade but large scale. It is produced in large quantities in Russia, North America, Brazil, Australia and Anshan, Liaoning Province, China. Magnetite is the main mineral raw material for iron smelting.

Mineral processing technology
Magnetic separation plays a dominant role in the separation of magnetite ores. Bailing Machinery adopts methods such as gravity separation, magnetic separation, flotation, roasting and magnetic separation, as well as combined processes for the treatment of weakly magnetic lean iron ores. Magnetic separation is directly adopted for the treatment of strongly magnetic iron ore.

Customer Feedback

“There is a client mine in Brazil whose main metallic mineral is magnetite. The structure is mainly disseminated, with a relatively fine particle size and an average iron content of 12-16%. By adopting the grinding – weak magnetic separation process, the beneficiation plant can obtain high-quality iron concentrate with a yield of over 65% and a recovery rate as high as 90%, which belongs to easily beneficiable ores. After long-term operation, the cost of mineral processing was relatively high. Therefore, Bailing Machinery was entrusted to carry out technical transformation. Based on the fact that the crushing and grinding process accounts for 70-80% of the beneficiation cost, we adopted the early harvesting and early polishing, staged grinding and staged separation process. Under the premise of ensuring the original indicators, we successfully reduced the cost of the beneficiation plant. This client saw that our technical level was mature. The equipment for the two new production lines to be opened later was all provided by our company, which brought the client a very high economic benefit.”

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