An experimental study on the quality improvement of iron concentrate by reducing titanium content
The iron concentrate of a processing plant in North China contains 64.44％FeHowever,its high titanium oxide content of 4.18％(measured in TiO2)seriously affects its sale and economic benefit.Therefore,according to properties and characteristics of the iron concentrate,an experimental study on the quality improvement of the iron concentrate by reducing titanium content had been carried out.Firstly,the original iron concentrate was finely ground to achieve monomer dissociation as much as possible,with the determined grinding fineness of-0.025 mm for particles accounting for 90％.Then,the combined process test of low intensity magnetic and reverse flotation was adopted to process the finely ground concentrate under optimal conditions(with magnetic field intensity of 1400 Oe,modified starch dosage of 1100 g/t,lime dosage of 1100 g/t,and sodium oleate collector dosage of 50 g/t).Satisfactory technical indicators of the final iron concentrate including the Fe grade of 69.57％,TiO2 content of 1.48％,and recovery rate of 89.49％had been obtained.The great reduction of TiO2 content and increase of Fe grade of the final iron concentrate had well met the purpose and requirement for the quality improvement of original iron concentrate by reducing titanium content.
iron concentrateilmenitemagnetic separationreverse flotation
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