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Natural Calcium Carbonate Powder (Coarse)

Raviraj Minerals offers Coarse Grade Natural Calcium Carbonate, specifically processed for robust, high-volume industrial applications that require structural bulk and significant weight enhancement. While maintaining the high purity (>99% CaCO3) and natural whiteness (97%) characteristic of our natural deposits, this powder is milled to a deliberately larger particle size to serve specialized heavy-duty manufacturing needs. This coarse formulation excels in the production of PVC pipes, heavy-duty electrical cables, and thick-walled rubber extrusions. The larger particle morphology provides excellent structural reinforcement, improving the compressive strength and dimensional rigidity of rigid PVC compounds. Additionally, the slight alkalinity (pH 8-9) aids in stabilizing the polymer melt during high-temperature extrusion processes. Beyond plastics, this grade is a staple in the detergent and construction industries. In synthetic detergent powders, it serves as an excellent, non-reactive bulking agent that maintains a free-flowing consistency. In construction chemicals, grouts, and joint fillers, it acts to increase the physical volume and reduce overall shrinkage as the material sets and cures.