Mineral processing method for comprehensively recovering weak magnetic iron, rare earth and fluorite
A mineral processing method and weak magnetic technology, applied in chemical instruments and methods, mechanical material recovery, recycling technology, etc., can solve problems such as waste of useful resources, environmental pollution, and ineffective use of fluorspar
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[0014] A certain magnetite and rare earth beneficiation tailings in Baiyun Obo area, Inner Mongolia, the grade of TFe in the tailings is 21.6%, the grade of REO is 4.85% and the grade of CaF 2 Grade 22.5%. The tailings are subjected to strong magnetic separation with a high-gradient magnetic separator at a magnetic field strength of 0.7T, and the iron concentrate is ground to -45 μm by a ball mill, accounting for 82%, and after drying, it is mixed with activated carbon at a weight ratio of 0.18:1 , magnetized roasting at a roasting temperature of 720°C for 80 minutes, and the magnetized roasted product was ground with a rod mill for 2 minutes to dissociate and disperse. Under the condition of a 1250Gs magnetic field, a drum-type magnetic separator was used for weak magnetic separation to obtain TFe grade 56 % of the weak magnetic separation concentrate, the weak magnetic separation concentrate is selected by a magnetic separation column. The magnetic separation column selectio...
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