Efficient PTMS magnetic separation Effect of slurry flow rate on kaolin iron removal
water cooling electromagnetic separator
High efficiency of kaolin PTMS magnetic separation iron removal process to adjust the details of slurry flow rate, which includes the following steps: (1) the magnetic separation raw material (or purified kaolin); (2) the magnetic separation raw material obtained in step (I) into a solid content of 15% mixed slurry, and then add the magnetic separation raw material mass 2%. After sodium hexametaphosphate slurry stirring for 20min, 325 mesh wet screen;
PTMS magnetic separation
(3) Make high gradient magnetic separation under the slurry 325 in step (2), control the magnetic field strength of the high gradient PTMS magnetic separation to 1.4T, and the slurry flow rate is 1.2 cm/s. Select the slurry through high gradient magnetic separation machine to obtain concentrate slurry; (4) according to the amount of alum to 4% of the quality of concentrate slurry, add step (3) concentrate slurry to alum flocculation (30min), press filtration, drying, packaging, and obtain magnetic separation concentrate;
what is magnetic separation used for?
(5) Calcined the magnetic separation concentrate obtained in step (4) to get the calcined kaolin (or calcined products), and calcined kaolin for whiteness test. When the firing whiteness of magnetic concentrate concentrate products was tested, the firing whiteness was 91.5%, the Fe2O3 content was reduced from 1.27% before PTMS magnetic separation iron removal to 0.407%, the iron removal rate was 68.0%, and the TiO2 content was reduced from 0.29% to 0.227%.
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