Continuous flotation method for sulfides that contain concentrated iron ore, involves adjusting pH of aqueous paste of concentrated ore

摘要

The method involves adjusting pH of aqueous paste of the concentrated ore. A reducing agent is added to modify an iron hydroxide film in the surface of the sulfides containing concentrated iron ore and allows the adsorption of collector for the sulfides. A paste is added before and after the addition of reducing agent. The paste is ventilated and a gas is bubbled through the paste. The foam floatation of aqueous paste is carried out to produce foam containing minerals, such as sulphides. An independent claim is also included for a continuous flotation device.