Perlite filter aid

RD perlite filter aid is a powdery product obtained through multiple processes, including selecting and purifying small-diameter mineral sands, heating them with purified coal gas, selectively expanding them in a vertical shaft kiln, and then grinding and purifying them.


Foundry Bentonite

RD foundry bentonite is a clay rock with montmorillonite as its main mineral component. In the foundry industry, it plays a key role as a binder for molding sand, enabling the molding sand to have good plasticity, strength, and permeability to meet the various requirements of foundry production.


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