... or silver ore, manganese minerals, Construction aggregate, cement, refractory materials, abrasive materials, raw materials of glass, fluorite, limestone, steel slag etc. as ... when crushing the extra-hard, mid-hard and high corrosive materials like cobblestone, quartz sand, sandrock, lava, nicalon, corundum ... .It can crush mid-hard and extra-hard materials.The piling of the products is dense with ...