Kaolin PTMS MAGNETIC SEPARATOR condensation or flocculation method is mainly to remove iron titanium impurities in kaolin, in pH=8~11, like kaolin slurry added alkaline metal ions (such as calcium ions, manganese ions, etc.), son can make iron titanium impurities selective condensation, and then use weak anionic polymerization electrolyte selective flocculation, in order to obtain high quality kaolin concentrate.
PTMS MAGNETIC SEPARATOR Acid immersion method is to use acid solution to transform the insoluble compounds in kaolin into soluble compounds, and then realize the separation of kaolin and iron impurities. Generally, the heating acid immersion method is used to a certain extent, the H + in the acid replaces the trivalent ferric ion, and generates soluble iron compounds into the solution, to complete the iron removal operation, the commonly used acid solution is sulfuric acid, hydrochloric acid and oxalic acid.
PTMS MAGNETIC SEPARATOR The reducing agent can be used to reduce the insoluble trivalent iron (such as limonite) into the soluble divalent iron, after filtration and washing, removed with the filtrate, to achieve the effect of iron removal. Commonly used reducing agents are insurance powder, sodium borohydride and acid-soluble hydrogen gas.
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