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1979年世界磷精矿的总产量超过1.26亿吨,其中东欧(苏联)18.14％,北美40.71％,非洲26.83％,亚洲10.94％。磷矿开发的急剧上升和化肥使用量的不断增加,使得合理开发、富集利用低品位磷矿成为当今世界注视和研究的课题。为了满足制肥的要求,低品位磷矿必须要进行选矿富集。富集可以仅仅是洗选和分级(如多哥、某些摩洛哥矿等),但绝大多数需要先进的工艺进行选矿。五十年来,浮选已是一种最有效的方法。经研究已用于富集硅质脉石的沉积矿石以及内生磷灰石。 全世界磷矿的储量和资源相当多。根据埃玛等报导,总数至少达130亿吨,而且如果工艺的发展使含碳酸盐连生体的低品位沉积矿床也得到开发,总量甚至可达1000亿吨。
In 1979, the world’s total phosphorus concentrate production exceeded 126 million tons, including 18.14% in Eastern Europe (Soviet Union), 40.71% in North America, 26.83% in Africa and 10.94% in Asia. The rapid rise of phosphate rock development and the increasing use of chemical fertilizers have made the development and enrichment of low-grade phosphate rock a topic of attention and research in today’s world. In order to meet the requirements of fertilizer, low-grade phosphate rock must be beneficiated enrichment. Enrichment can be just washing and grading (eg Togo, some Moroccan mines, etc.), but the vast majority require advanced processes for beneficiation. Flotation has been one of the most effective methods for fifty years. The study has been used to enrich the siliceous gangue sedimentary ore and endogenous apatite. There are quite a lot of reserves and resources of phosphate rock in the world. According to reports by Emma et al., The total number is at least 13 billion tons, and if process development has led to the development of low-grade sedimentary deposits containing carbonate syncytia, the total amount could even reach 100 billion tons.