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王集磷矿第三层矿是属于比较典型的细粒鲕状结构的硅—钙质磷块岩,脉石矿物主要为硅酸盐和碳酸盐(白云石,方解石);有用矿物主要是鲕粒状胶磷矿。其嵌布粒度极细,又互相浸染,原矿品位(指含P_2O_5,以下同)15％左右,是所谓胶磷矿中最难选的一种。1973年上半年我院对该矿进行了规模为0.7吨/日的浮选扩大试验,取得了精矿品位30％,回收率80％以上的工艺指标。但还存在着入选温度较高(50～55℃),药剂耗用量较大等问题。为了防止将来工业生产中排出的大量尾矿废水对水源和土壤等污染,保障人民身体健康,以及降低药耗、降低浮选温度,于1973年下半年进行了尾矿水回收和降低浮选温度的中间规模试验。
The third layer ore of Wangji phosphate rock is a typical silicon-calcareous phosphate rock with fine-grained oolitic structure. The gangue minerals are mainly silicates and carbonates (dolomite and calcite). The useful minerals are mainly oolitic Phosphate rock. The embedded grain size is very fine, and mutual dip, ore grade (referring to containing P_2O_5, the same below) about 15%, is the so-called colloidal phosphate in the most difficult one. In the first half of 1973, our hospital carried out the flotation expansion test on the scale of 0.7 ton / day for the mine, and achieved the technical index of 30% of the concentrate grade and the recovery rate of over 80%. However, there are still some problems such as high temperature (50-55 ℃) and large consumption of pharmaceuticals. In order to prevent a large amount of tailings wastewater discharged from industrial production from polluting water sources and soil, protecting people's health, reducing drug consumption and lowering flotation temperature, recovery of tailings water and reduction of flotation temperature were carried out in the second half of 1973 The middle scale test.