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磷矿石的洗矿是指在水中机械碎解、洗涤矿石中粘土质和海绿石等分散物料,以及磷块岩结核和板块间的胶结物和薄膜,同时分出这些物料。洗矿(即擦洗—筛分)方法多用于由于长期风化和淋蚀,矿层中较稳定的磷矿物部分重结晶,并为疏忪的泥质矿物所胶结的矿床。经擦洗此类矿石泥质矿物泥化,粗粒部分富集。此法对于内生磷矿床和含不易风化淋蚀的稳定矿物较多的沉积型矿床尚无实效。我国磷矿重要产地之一的云南滇池附近磷矿中,风化矿占其总储量的20%～30%。这部分矿石埋藏浅,经风化作用碳酸盐流失,P_2O_5含量相对富集,MgO 含量低,开采条件好。而擦洗工艺设备简单,投资省,成本低,污染较轻。故在我国采
Phosphorus ore washing refers to mechanical disintegration in water, washing minerals such as clays and sphalerite dispersed materials, and phosphate rock nodules and plates between the cements and films, while the separation of these materials. The ore washing (ie, scrubbing-screening) method is mostly used for deposits that are partially recrystallized from the more stable phosphorite in the ore layer and cemented to the dredged muddy minerals due to long-term weathering and erosion. After scrubbing the mineral clay mineral mud, coarse part of the enrichment. This method is not effective for endogenous phosphate deposits and sedimentary deposits that contain more stable minerals that are not susceptible to weathering and erosion. Among the phosphate rock deposits near Dianchi Lake, Yunnan, one of the important phosphate rock producing places in China, weathering mines account for 20% to 30% of its total reserves. This part of the ore burial shallow carbonate loss by weathering, P_2O_5 content is relatively rich, low MgO content, mining conditions are good. The scrubbing process equipment is simple, investment, low cost, less pollution. Therefore, mining in our country