Study On Oil Shale's Heavy Medium Separation Equipment And Process Parameter

The purpose of this study is based on the oil shale of dense medium cyclone separation test,research is suitable for high density mineral separation of heavy medium cyclone and suspension properties of structural parameters,for the heavy medium coal preparation technology to expand to the high density mineral's separation field(metal or non-metallic)to provide theoretical and experimental basis.(1)The viscosity test.Through the experimental study on the high density(density over 1.8 g/cm3)slurry under different density,different slime content of the change of viscosity.Variance analysis showed that both in ferrosilicon powder slurry and the magnet powder slurry,density and the content of slime has highly significant effect on viscosity.Ferrosilicon powder slurry viscosity under the condition of the same density,slime content significantly lower than the magnet powder slurry.(2)Changing the conventional DSM heavy medium cyclone's cone from single cone angle to double,the first cone have a big cone angle to concentrate the suspending liquid rapidly and improve the separation density,the second cone angle is small which can increase the separation space.The first cone angle have two choice:80° and 60°,the second cone angle also have two choice:30° and 20°,so there will be four kind of double cone cyclone.Using the numerical simulation software Fluent simulate four kinds of dense medium cyclone,find that the cyclone with 80° and 30° have greater tangential velocity and smaller pressure drop.These advantages of the double cone cyclone is still existing when compared with single cone cyclone.(3)The laboratory experiment on oil shale's separation by dense medium cyclone hae been made,it proved that using dense media method for oil shale's separation is feasible.