Abstract: Big capacity is advantage of tapered concentrators, but one disadvantage of application of tapered concentrators.Analyzed the principle, characteristics of tapered concentrators and sharp shrinkage chute and optimized the sharp shrinkage chute.Comparative tests have been done between the optimized sharp shrinkage chute group according to the 3DS6FD tapered concentrators In the laboratory and 3DS6FD tapered concentrators in one titanium magnetite factory.Results indicate that in the lab the 3DS6FD tapered concentrators can be replaced with optimized sharp shrinkage chute group to study, analysis, description and study some minerals beneficiation of low grade ores being suitable or unsuitable for using tapered concentrators to handle.And whether application of tapered concentrators could be used or not be used for optimizing and exploring mineral processing technology in some old plant.

Key words: Tapered concentrator, Sharp shrinkage chute, Simulation