ZIR-CAST® sand is used for iron and steel foundry applications. ZIR-CAST® is used due to its lowest thermal expansion (of all sand media) for castings that require high dimentional stability and accuracy.

ZIR-CAST® flour is used in foundry coatings because of its high refractory value and resistance to thermal deformation. Prince Minerals offers two grades for the refractory coating industry.

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