石灰石是一种用途广泛的矿产资源,是冶金、建材、化工等工业部门的重要原料。目前,各行业需要的石灰石大都是分别开采的,加之企业受单纯生产型观念的影响,忽视了经济效益,因而往往只从本行业的需要出发,取其有用组分,弃其无用组分.使宝贵的矿产资源遭到了不应有的损失,舍弃物还要占据大片土地或沿 Limestone is a widely used mineral resources, is an important raw material in the metallurgical, building materials, chemical and other industrial sectors. At present, most of the limestone needed by various industries are mined separately. In addition, the enterprises are influenced by purely production-oriented concepts and ignore the economic benefits. Therefore, they often choose their useful components and discard their useless components only from the needs of the industry. So precious mineral resources have suffered undue losses, discards also occupy a large area of ​​land or along