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目前砂石行业的生产工艺、设备和技术都比较落后，生产效率低，钢耗大，成本高，产品质量差。中碎普通采用颚式破碎机或国产圆锥破碎机，石料针片状含量高。我局在棉花滩水电站工程中首次引进世界先进破碎机生产厂家──瑞典斯维达拉公司生产的Ｓ４０００型旋回破碎机进行二级
Currently sand and gravel industry production technology, equipment and technology are relatively backward, low production efficiency, steel consumption, high cost, poor product quality. In the common use of jaw crusher or domestic cone crusher, stone needle flake content is high. I Bureau in Mianhuatan hydropower station project for the first time the introduction of the world’s most advanced crusher manufacturer - Sweden Svidera company S4000-type gyratory crusher for two