Crushing equipment dimensions of hydrocyclones - 1 views

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  #1 betsy stone on 14 Aug 14

   

  When fine coal smaller than mm. is being treated the screen 1 may in many cases make a separation according to a particle size of about 2 mm.The following data concern a washery which is adapted for washing 140 tons of fine coal with a particle size of l0 mm. per hour:Screen 1: 2 Allis Chalmers Low Head screens, dimensions 6' x 16,zenith grinding mill size of mesh 1.5 X 20 mm.Pump 6: capacity 255 cub. m./h.; feed pressure: 14 m. of suspension column near the hydrocyclone 8.Magnetic separators 10, 12', 23 and 37: numbering 7, 2, 4 and 1 respectively, all being 4' wide.Centrifuges 30 and 44: Escher Wyss.-Pump 68: capacity 255 cub. m./h. Thickener 21: diameter 5 m. Pump 66: capacity 15 cub. m./h.Dimensions of hydrocyclones Hydrocyclones (number) 8 52 27 41 Numbers 2 2 5 1 Diameters cylindrical part (mm.) 350 500 350 350 Height of cylindrical part (mm.)Apcx angle, degrees 20 20 20 20 Diameter feed opening (mm.) 70 100 70 70 Diameter vortex finder (mm. 150 216 70 150 Length vortex tinder (mm.) 150 200 150 150 Diameter apex opening (mm.) 150 Angle between aids and vertical, degrees 0 75 0 0 Feed pressure (at overpressure) 1. 0 0. 5 Feed pressure (suspension column in m.) 14 4.
  
  Variable of the magnetite supplied through the pipeline 74 has a particle size smaller than 40 microns. The specific gravity of the separating suspension in the reservoir 3 is adjusted at about 1.55, in the reservoir 64 at about 1.75. The fraction of magnetics obtained from the magnetic separators 10 and 12 has a specific gravity of about 1.8,crushing equipment the specific gravity of the thickened suspension obtained from the thickener 21 being about 2.0.The operation of the hydrocyclones 27 and 41 is so controlled that only particles smaller than 150 microns (or microns if desired) will get into the over flow fraction. z
  
  It is to be understood that the example of the invention herewith shown and described is to be taken as the preferred embodiment of the same and various changes may be made without departing from the spirit of the invention and the scope of the appended claims.A process of separating a mixture of particles differing in particle size and specific gravity which comprises subjecting said mixture with a separating suspension including fine magnetic particles suspended in a liquid to a wet-screening treatment to obtain a fine fraction and a coarse fraction, separating said fine fraction in a hydrocyclone to obtain a fine specifically light fraction and a fine specifically heavy fraction, treating each of said fine fractions in magnetic separator means to obtain fractions of magnetic particles and fractions of non-magnetic particles.

   

  <div class="cArrow"> </div><div class="cContentInner">When fine coal smaller than mm. is being treated the screen 1 may in many cases make a separation according to a particle size of about 2 mm.The following data concern a washery which is adapted for washing 140 tons of fine coal with a particle size of l0 mm. per hour:Screen 1: 2 Allis Chalmers Low Head screens, dimensions 6' x 16,<a href="http://www.sellercrusher.com/solutions/zenith-grinding-mill.html" rel="nofollow">zenith grinding mill</a> size of mesh 1.5 X 20 mm.Pump 6: capacity 255 cub. m./h.; feed pressure: 14 m. of suspension column near the hydrocyclone 8.Magnetic separators 10, 12', 23 and 37: numbering 7, 2, 4 and 1 respectively, all being 4' wide.Centrifuges 30 and 44: Escher Wyss.-Pump 68: capacity 255 cub. m./h. Thickener 21: diameter 5 m. Pump 66: capacity 15 cub. m./h.Dimensions of hydrocyclones Hydrocyclones (number) 8 52 27 41 Numbers 2 2 5 1 Diameters cylindrical part (mm.) 350 500 350 350 Height of cylindrical part (mm.)Apcx angle, degrees 20 20 20 20 Diameter feed opening (mm.) 70 100 70 70 Diameter vortex finder (mm. 150 216 70 150 Length vortex tinder (mm.) 150 200 150 150 Diameter apex opening (mm.) 150 Angle between aids and vertical, degrees 0 75 0 0 Feed pressure (at overpressure) 1. 0 0. 5 Feed pressure (suspension column in m.) 14 4. <br /> <br /> Variable of the magnetite supplied through the pipeline 74 has a particle size smaller than 40 microns. The specific gravity of the separating suspension in the reservoir 3 is adjusted at about 1.55, in the reservoir 64 at about 1.75. The fraction of magnetics obtained from the magnetic separators 10 and 12 has a specific gravity of about 1.8,<a href="http://www.sellercrusher.com/solutions/crushing-equipment.html" rel="nofollow">crushing equipment</a> the specific gravity of the thickened suspension obtained from the thickener 21 being about 2.0.The operation of the hydrocyclones 27 and 41 is so controlled that only particles smaller than 150 microns (or microns if desired) will get into the over flow fraction. z <br /> <br /> It is to be understood that the example of the invention herewith shown and described is to be taken as the preferred embodiment of the same and various changes may be made without departing from the spirit of the invention and the scope of the appended claims.A process of separating a mixture of particles differing in particle size and specific gravity which comprises subjecting said mixture with a separating suspension including fine magnetic particles suspended in a liquid to a wet-screening treatment to obtain a fine fraction and a coarse fraction, separating said fine fraction in a hydrocyclone to obtain a fine specifically light fraction and a fine specifically heavy fraction, treating each of said fine fractions in magnetic separator means to obtain fractions of magnetic particles and fractions of non-magnetic particles.</div>

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