The optimal conditions of magnetic separation are that the magnetic field strength is 175 mT and the particle size of the reduced BRM is 0.074 mm, accounting for 80%. The grade of iron ore concentrate obtained by magnetic separation is 55.78%, and the recovery rate of concentrate is 81.26%.
While the means of wet high gradient magnetic separating red mud output directly from Bayer process is a simple and feasible way. In October of 2010, Aluminum Corporation of China announced their dramatic breakthrough on iron recovery from red mud.
Magnetic Separation is the process, in which the magnetically caused material is detached easily by using a magnetic force. From last many years, magnetic separators are used for various separation process in recycling industry like Glass recycling, Scrap material, Pet flakes, Plastic recycling, Rubber recycling, Municipal solid waste ...
The Rare Earth Roll Magnetic Separator can process a wide size range of material ranging from 75 microns up to 15mm. Although, as with all physical separation processes, a tight control of the particle size range improves separation efficiency. Industrial Scale Rare Earth Roll Magnetic Separator
Bauxite is the main source for the production of alumina and metal aluminum by the Bayer process. Limestone is an impurity associated to bauxite due to geological and morphological conditions prevailing during its formation. Experimental work has shown that limestone can be easily removed from bauxite using magnetic separation techniques.
Recovery of iron from Bayer red mud was carried out by direct reduction roastingmagnetic separation process. Moreover, the residues after magnetic separation process were reused as building materials. This combination recycling process showed the potential benefits of zero emission of red mud wastes from the production industry of alumina.
June 10, 2020
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