昆阳磷矿是一个有廿多年开采历史的大型露天矿山。采出的矿石经一段破碎和筛分后,分为200～30毫米的块矿和小于30毫米的粉矿两种产品。块矿和粉矿数量各占50％左右。由于粉矿含泥量大,对生产高浓度磷肥不利。因此,研究粉矿的处理方案,提高矿石质量和经济效益,很有必要。 作者根据1987年昆阳磷矿风化矿(包括半风化矿)的擦洗脱泥试验及国内有关科研单位对滇池地区胶磷矿的浮选试验结果,对昆阳磷矿Ⅱ-Ⅳ采区风化矿筛下-30毫米粉矿的处理提出如下三个方案: Kunyang Phosphate Mine is a large open-pit mine with more than 20 years of mining history. After a period of mining and screening of ore ore is divided into 200 to 30 mm of lump ore and less than 30 mm powder ore two products. Lime ore and fines account for about 50% each. Due to the large amount of silt in the fines, it is unfavorable to the production of high-concentration phosphate fertilizer. Therefore, it is necessary to study the treatment program of fines, improve ore quality and economic benefits. According to the scrubbing desliming test of the weathered ores (including semi-weathered ore) in Kunyang Phosphate Mine in 1987 and the flotation test results of phosphate rock in the Dianchi Lake area by relevant domestic scientific research institutes, Sieve -30 mm fines processing proposed the following three programs: