我国磷矿资源丰富,已探明储量仅亚于摩洛哥、美国和苏联,居世界第四位。但在主要的磷矿产出国中,我国却是唯一的资源丰富而产量不足、尚需进口部分磷矿的国家。这种状况长期未得到根本改变。就技术工作而言,主要是由于开发建设和扩大生产受到倾斜、缓倾斜中厚矿体采矿方法和胶磷矿选矿两大技术课题的制约。经过多年来不断地努力,后者虽已初步有所突破,但对采矿方法总的进展不大,仍然是急待解决的关键性课题。 我国倾斜缓倾斜中厚磷矿床占已探明工业储量的70％以上,而地下开采的矿山又约占70％左右。由于多数资源构造复杂,地质特 China is rich in phosphate rock resources, proven reserves only sub-Morocco, the United States and the Soviet Union, ranking fourth in the world. However, among the major phosphate rock producing countries, our country is the only country that is rich in resources and insufficient in production and yet still needs to import part of its phosphate rock. This situation has not been fundamentally changed for a long time. In terms of technical work, this is mainly due to the constraints of the two major technical issues of developing and expanding production, being inclined, moderately inclined medium-sized ore body mining and phosphate rock phosphate beneficiation. After years of continuous efforts, although the latter has made initial breakthroughs, the overall progress in mining methods is still not a big issue that remains to be solved urgently. Tilting gently inclined medium-thick phosphate deposits in China account for more than 70% of proven industrial reserves, while underground mined mining accounts for about 70%. Due to the complexity of most resources, geological special