三、双反浮选反浮选碳酸盐矿物后,不再浮选磷酸盐,而是反浮选石英及硅酸盐矿的流程方案,即所谓的双反浮选(图五)。美国矿山局氟硅酸浮选法,就是一种双反浮选磷块岩的方案。在接近中性的条件下,每处理一吨矿石加入H_2S_4F_60.35—0.8公斤抑制磷酸盐,并以15份脂肪酸,0.2份煤油、0.2份NaOH组成的一种乳剂 Third, double anti-flotation anti-flotation carbonate minerals, no longer flotation of phosphate, but the anti-flotation quartz and silicate mine process program, the so-called double reverse flotation (Figure V). US Bureau of Fluorosilicate flotation method, is a dual anti-flotation phosphorite rock program. Nearly neutral conditions, each treatment of a ton of ore added H_2S_4F_60.35-0.8 kg of phosphate inhibition, and 15 parts of fatty acids, 0.2 parts of kerosene, 0.2 parts of an emulsion composed of NaOH