Flotation experiments of a new cationic collector for Donganshan's iron ore

During the process of increasing iron and reducing silicon from the mixed magnetic concentrate (iron grade 47.93%) adopted by Donganshan sintering plant,anionic collector reverse flotation at high temperature has been undertaking.Heating the pulp not only need to consume a lot of steam,which increases energy consumption but also make flotation plant working environment bad.After studying the characters of mixed magnetic concentrate in Donganshan sintering plant,a new cationic collector DYP was prepared by Northeastern University.At the temperature 25℃,collector DYP acts the reverse flotation collector and imitates the actual product flow(one time of rough flotation,one time of concentration and three times of scavenging in closed circuit) taking the flotation experiments.Finally,a product with a iron grade of 65.31%and a iron recovery of 79.24% is obtained and the reagent system is more easy.