Raymond Roller Mills are also called Raymond Hammer Mills, which are used for grinding various rocks and stones, like clay, gypsum, gravel, etc. which are not higher than 320Pa hardness. ... Iran, Russia, Liberia, Pakistan, Mexico, Vietnam, Zambia, Turkey, Ghana, South Africa and so on. Feed size: ≤25-≤30mm Capacity: 0.6-176 tons per shift ...