performance 3r2115 raymond grinder mill 3R2115 Vertical Dolomite Raymond Roller Mill For 3R2115 Vertical Dolomite Raymond Roller Mill For Mining Raymond mill 3R2115 is a traditional mill type which is to grind non flammable and non explosive materials in the fields of building materials mining metallurgy and chemical industry with hardness less than 7 in Mohs scale and humidity less than 6 percent such as limestone calcite barite