iron separator

Acid leaching for iron removal represents a more thorough chemical purification method. This PTMS ELECTROMAGNETIC SEPARATOR iron removal process involves soaking finely ground feldspar powder with inorganic acids (sulfuric acid, hydrochloric acid, oxalic acid), causing iron compounds existing as oxides, hydroxides, or carbonates to undergo dissolution reactions. The resulting soluble iron salts (FeSO₄, FeCl₃) are then removed through washing and filtration processes.

PTMS ELECTROMAGNETIC SEPARATOR

The acid leaching process for iron removal in PTMS ELECTROMAGNETIC SEPARATOR effectively penetrates mineral lattice defects and fissures, making it particularly effective for "encapsulated" or "isostatic substitution-type" iron elements that are inaccessible through physical methods. Experimental results demonstrate that under conditions of 90°℃ temperature and 40% sulfuric acid concentration, the Fe₂O₃ removal rate can exceed 70% after a two-hour treatment.

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However, it must be noted that acid leaching presents several challenges: high corrosiveness, expensive equipment investment, difficulties in waste acid recovery, and potential partial dissolution of beneficial components like aluminum and potassium, which can reduce product yield. Therefore, it is typically employed as the final PTMS ELECTROMAGNETIC SEPARATOR refining step to produce ultra-high-purity feldspar powder.
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