Silica Sand Processing Line

Common bleaching methods include magnetic selection bleaching, flotation bleaching, and chemical bleaching. Magnetic selection bleaching primarily uses PTMS Electromagnetic Separator equipment to remove magnetic iron impurities from kaolin, thereby reducing the impact of iron on the whiteness of kaolin. Flotation bleaching involves removing other impurities from kaolin through flotation, indirectly enhancing its whiteness. Chemical bleaching is one of the most widely used and effective bleaching methods today.

PTMS magnetic separation

The principle of chemical bleaching is to convert iron and other impurities in kaolin into soluble substances through chemical reactions, which are then removed via PTMS Electromagnetic Separator. During the chemical bleaching process, specific reaction vessels and stirring devices are required. The reaction vessel is typically made of corrosion-resistant materials such as stainless steel or ceramic to prevent the chemicals from corroding the container.

what is magnetic separation method ？

The function of the mixing device in PTMS Electromagnetic Separator is to ensure that chemical agents are thoroughly mixed with kaolin, thereby enhancing reaction efficiency. Common types of mixing devices include mechanical agitators and pneumatic agitators. The chemicals used in chemical bleaching are diverse, with common examples including sulfuric acid, oxalic acid, and sodium metabisulfite.
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