The invention belongs to the technical field of mineral separation in iron and steel
metallurgy industry, and particularly relates to a new method for recycling iron minerals in magnetic separated gangues, which adopts a method for recycling the magnetic separated gangues through staged
magnetic separation, regrinding, fine screening and a
magnetic separation column process: sending the magnetic separated gangues recycled by a recycling
machine to a concentrated low-intensity
magnetic separator; feeding the separated iron minerals into a
ball mill for ball milling and discharging, and sendingthe minerals to a first segment of
dehydration tank by a pump through a pump box; sending the dehydrated concentrate to a second segment of
magnetic separator; sending the selected concentrate to a
high frequency vibrating screen, returning substances on the screen to a feeding box of the concentrated low-intensity
magnetic separator, and feeding the products under the screen into a third segmentof magnetic separator; sending the magnetic separated concentrate into a feeding box of a
magnetic separation column to cause the concentrate to automatically flow to the magnetic
separation column; and returning the gangues in each segment of magnetic separator to the
gangue recycling
machine. The concentrate at the magnetic
separation column is the final concentrate, and the
gangue at the firstsegment of magnetic separation recycling
machine is the final
gangue. The invention has reasonable process flow, can improve the grade of the reclaimed iron minerals in the magnetic separated ganguesthrough reasonable separation, fully utilize mineral resources, reduce the waste and loss of metals, obtain good indexes and simultaneously obtain remarkable economic benefit.