Precision casting grade zircon sand:JZ-ZRS is derived from high-quality zircon concentrate produced in Australia. It undergoes rigorous screening to ensure a reasonable particle size distribution and is free of dust. It is suitable for surface sanding in lost wax precision casting and serves as an excellent coating aggregate. It can significantly enhance the permeability, wet strength, and high-temperature strength of precision casting molds. It is the preferred material for surface sanding in the production of stainless steel and alloy steel castings through lost wax precision casting.