ZirPro provides the optimum combination of efficient and cost-effective zirconia-based products to enhance productivity and quality. Composed of either stabilized zirconia — Zirmil® Y and Zirmil® Ce — or zirconium silicate materials — ER120 and Rimax® — ZirPro’s wide range of durable ceramic grinding beads help achieve more controlled operations.
In the mining industry, ultra-fine grinding is required to increase recovery yields, liberate trapped grains and create new active surfaces. The stirred mill environment is particularly severe. The minimum requirement of a bead is to be competent and provide a cost-effective, energy-efficient grinding solution. A competent media type must be hard but not abrasive, withstand high impacts and resist the shear wear associated with bead mills.
Saint-Gobain ZirPro has been supplying high-quality ceramic media for more than 40 years. Based on this experience, ZirPro developed Minerax, a market-leading composite product. Minerax is engineered to be chemically resistant and offer outstanding mechanical performance, making it fully competent in the most demanding applications.
Minerax: a competent bead
Minerax has been validated in the majority of precious and base metal applications: Au, Pt, Fe, Cu, Pb and Zn. Minerax has a size range (2-3, 3-4, 4-5, 5-6 mm) that is ideal for all applications, from coarse feed of more than 200 microns to ultra-fine re-grind applications with feed material below 45 microns.
Mining processes are continuous, and mills must operate with a working mix or seasoned charge of media. This requires maintaining a high proportion of effective bead within the charge. Minerax’s superior wear and mechanical performance is the best choice to address this challenge.