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An example of the efficient iron removal process of kaolin, which includes the following contents:

(1) Simple purification of the raw kaolin ore, PTMS MAGNETIC SEPARATOR to get the magnetic separation of raw materials (or the purified kaolin);

(2) Step (1) The obtained magnetic separation raw material is added into a mixed slurry of 15%, and then the magnetic separation raw material is 4%. After sodium hexametaphosphate slurry stirring for 20min, 325 mesh wet screen;

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(3) Conduct high gradient magnetic separation under the slurry of 325 mesh in step (2), the magnetic field strength of high gradient PTMS MAGNETIC SEPARATOR is controlled to 1.4T, the slurry flow rate is 1.8 cm/s, and the slurry is processed through the high gradient magnetic separation machine to obtain the concentrate slurry;

(4) According to the amount of alum added to 4% of the quality of concentrate slurry, the concentrate slurry in step (3) is added to alum flocculation (flocculation 30min), pressure filtration, drying, packaging, to obtain magnetic concentration concentrate;

what is magnetic separation method for concentration of ore？

(5) Calcined the magnetic separation concentrate obtained in step (4) to obtain the calcined kaolin (or calcined products), and calcined kaolin for whiteness test. PTMS MAGNETIC SEPARATOR Iron (FE2O3) can be removed from the kaolin. When the leaming whiteness of magnetic concentrate products was tested, the leaming whiteness was 92.1%, the Fe2O3 content was reduced from 1.27% before magnetic separation to 0.41%, the iron removal rate was 67.7%, and the TiO2 content was reduced from 0.29% to 0.16%.

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