The XZM series ring roller mill, also known as a medium-speed micro-powder mill or ring roller mill, is a processing equipment specifically designed for producing ultrafine and micro powders. Developed by Zenith Machinery, drawing upon nearly forty years of experience in mill R&D and manufacturing, incorporating modern grinding technology, and based on the development trends and demands of the domestic mill market, after numerous investigations, research, and trials. Previously waste calcium hydroxide digestion residue can be ground by the ring roller mill into high-value-added products such as limestone bricks, lime mortar, soil conditioners, wastewater treatment products, and flue gas desulfurization products.