随着国民经济的飞跃发展,对磷肥生产的基本原料磷矿石的需要量与日剧增。据统计,我国磷矿中绝大部分是属颗粒微细的沉积磷块岩,就品位(P_2O_5含量)而言,80％以上为中低品位的细粒嵌布的胶质磷矿,均需进行选矿加工。 按矿石可选性难易,大致是细粒嵌布者难于粗粒嵌布者;磷块岩难于磷灰石;钙质磷块岩难于硅质磷块岩;而钙—硅质磷块岩为最难选。我国磷块岩的主要部分恰恰是最难选的颗粒微细中低品位的钙—硅质磷块岩,湖北王集胶磷矿就属此型。 With the rapid development of the national economy, the demand for phosphate rock, the basic raw material for phosphate fertilizer production, has soared with the Japanese economy. According to statistics, the vast majority of China’s phosphate rock is a finely divided sedimentary phosphorite rock, in terms of grade (P_2O_5 content), more than 80% of the low-grade fine grained gelatinite phosphate should be carried out Mineral processing. According to the difficulty of ore selectivity, roughly intricate embedded in those who are difficult to coarse cloth embedded; apatite difficult apatite; calcareous phosphate rock is difficult siliceous phosphorite; and calcium - siliceous phosphorite For the most difficult choice. The main part of China’s phosphorite rock is precisely the most difficult grain of low-grade calcium-siliceous phosphorite, Hubei Wangji plastic phosphate belongs to this type.