... powder through expanding, modifying, purfying and grading the natural qualified perlite ore in Shangtianti Mine, Xinyang City, Henan Province. Its ... oil, wine, food, beverage, sugar & dextrose, monosodium, medicine, petrochemicals, raw material chemicals, metallurgy, textile and food additives.Applied Equipment:Postive ... operating: Vaccum Blade Filter, Rotary Vaccum Pre-coat Filter. Perlite Filter Aid