化学矿山工业是为化工产品提供矿产原料的基础工业。主要开采对象是硫铁矿、磷矿、钾盐等20余种非金属矿产。化学矿山先后建起了昆阳、海口、晋宁、浏阳、榆山、黄麦岭、云浮等一大批大中型露天矿、即将投产的还有青海钾肥厂一期工程的钾盐等矿。我国化学矿山露天开采虽然起步较晚,与国内的煤、铁、有色金属矿等露天开采技术相比,尚有较大差距、但是,近年来就化学矿山露天开采若干技术进展来看,形势是喜人的。 一.露天采矿工艺方面 Chemical mining industry is the basic industry for chemical products to provide mineral raw materials. The main mining object is pyrite, phosphate rock, potassium salt, more than 20 kinds of non-metallic minerals. Chemical mine has built a large number of large and medium-sized open-pit mines in Kunyang, Haikou, Jinning, Liuyang, Yushan, Huangmailing, Yunfu, etc. There are also potash and other mines to be put into operation in the first phase of Qinghai potash fertilizer plant. Although open pit mining in chemical mines in our country started relatively late, there is still a long way to go compared with the open pit mining technologies in China such as coal, iron and non-ferrous metal mines. However, in recent years, there have been some technical advances in the open pit mining of chemical mines. Gratifying An opencast mining process