redges. with many times magnetic separations to remove impurities,it keeps high qualified red grains. then several times washing removes the powder away. after screening of sifting bed,each size has the uniform particle distribution. garnet sand size: normally 12/24# 20/40# 30/60# 80# 120# we also can produce according to your size distribution requirementgarnet sand production technology:crushing--magnetic separation--washing--drying--screeninggarnet sand application:sand blasting, waterjet cutting, water filtration...