Exploratory Development on Porous Aerator Performance in Alkali Slurry in Flotation Column and Reactivation Method
As core part of flotation column,aerator has been always priority research.A new type of porous aerator made of stainless sintered microcellular material is designed,which diameter is between 20μm to 40μm.High bubble surface area flux is obtained at low air pressure 20kPa by this type of aerator in water.In order to extend its applied range ,experiments were carded out in alkali slurry (pH=12),resulting with porous aerator clogged after working 20 days.Sampling the cross-section of aerator detected by microscope and X-ray diffraction ,the reason clogging was found.Then plugging aerator was reactivated after putting it in acidic liquor treated by ultrasonic for about ten minutes.On-line aerator maintenance can be done in no down time,and it can be repetitive-used after recovered ,so reduced capital costs.
Flotation column Porous aerator Alkali slurry Clogging On-line maintenance Reactivation
Z.C.Shen S.X.Shi H.L.Liu D.Chen
Beijing General Research Institute of Mining and Metallurgy,Beijing,China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
4239-4244
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）