△美国Pennsylvania破碎机公司制造了三种规格的双辊破碎机,用于破碎石灰石、页岩与熟料。此种破碎机可根据使用者的要求,采用三种表面的辊子进行破碎,这三种辊的表面是:棒齿、波形齿和光滑面,辊子是由铸铁或耐磨钢制造的。在有特殊要求时,辊子可用锰钢或铬钼钢制造。△美国Semperit公司提供了一条输送温度 △ Pennsylvania Crusher Company of America made three sizes of twin roll crushers for crushing limestone, shale and clinker. This crusher can be crushed according to user requirements using three surface rollers, the surfaces of which are: bar teeth, corrugated teeth and smooth surfaces. The rollers are made of cast iron or wear-resistant steel. When there are special requirements, the roller can be made of manganese steel or chrome molybdenum steel. △ American Semperit company provides a delivery temperature