Experimental Study on Reverse Flotation Desiliconization of Iron Ore Based on New Low-Temperature Resistant Collector
In view of the problems of high flotation cost and high energy consumption in the current heating reverse flotation process in Guanbaoshan beneficiation plant,the reverse flotation test was carried out at low-temperature(10-16 ℃)using a new low temperature resistant collector KDB-1 developed in the laboratory.The test results show that under the conditions of rough selection of pulp pH of 11.0,collector KDB-1 dosage of 1500 g/t,inhibitor causticized starch dosage of 700 g/t,and activator calcium oxide dosage of 1000 g/t,the flotation closed-circuit test of one roughing,one cleaning and three scavenging was carried out on the flotation of feed ore in Guanbaoshan Iron Mine,and the excellent indexes of iron concentrate grade of 66.50％,iron recovery rate of 87.64％and iron tailings grade of 20.51％were obtained.The research shows that the new low-temperature resistant collector KDB-1 can achieve energy saving,environmental protection,cost reduction and efficiency increase while separating efficiently.
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