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HydroFloat Separators

EFD's new HydroFloat Separator for coarse particle mineral concentration delivering the capacity of a density separator while maintaining the selectivity of a flotation device. Using a novel aeration system to disperse fine bubbles into a fluidized-bed environment, the HydroFloat Separator significantly increases the selective recovery of coarse particles by applying flotation fundamentals to gravity separation.

Can be applied to:

  • Coal
  • Iron Ore
  • Industrial Minerals
  • Base Metals
  • Sulfides

Applications include:

  • Coarse Recovery in Split-Feed Flotation Circuits
  • Tailings Scavenging
  • Flash Flotation in Grinding Circuits

PRINCIPLES OF OPERATION

The HydroFloat Separator is an aerated fluidized-bed (or teeter-bed) separator. The synergistic effect of combining flotation with gravity concentration results in an outcome that cannot be achieved by either approach alone.

Air bubbles are dispersed by the fluidization system, percolate through the hindered-setting zone and attach to the hydrophobic component altering its density and rendering it sufficiently buoyant to float and be recovered. The use of the dense phase, fluidized bed eliminates axial mixing, increases coarse particle residence time and improves the flotation rate through enhanced bubble-particle interactions. As a result, the rate of recovery is high for both fully-liberated and semiliberated particles.

HydroFloat Separators Improve Coarse Particle Recovery through:

  • Increased bubble/particle collision rates
  • Increased bubble/particle sliding time
  • Increased residence time
  • Decreased mixing
  • Decreased turbulence and detachment
  • Decreased buoyancy restrictions

 

Product Table

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Item Name Part Number Description Price  
6in Ø Laboratory HydroFloat - Acrylic • Acrylic vessel with feedbox, overflow outlet and underflow valve connection
• Dewatering cone
• Internal elutriation water and air distribution manifold and associated piping
• Stainless steel support frame
• Teeter water flow meter
• Air flow meter
• Underflow control Valve
• PID Loop controller and I/P Converter housed in Nema4 Enclosure
• 115VAC, 1PH, 60Hz, 0.025A
On Request Add
6in Ø Laboratory HydroFloat - Stainless Steel • Stainless Steel vessel with feedbox, overflow outlet and underflow valve connection
• Dewatering cone
• Internal elutriation water and air distribution manifold and associated piping
• Stainless steel support frame
• Teeter water flow meter
• Air flow meter
• Underflow control Valve
• PID Loop controller and I/P Converter housed in Nema4 Enclosure
• 115VAC, 1PH, 60Hz, 0.025A
On Request Add
16in Ø Laboratory HydroFloat - Maximum Feed Rate: 2.0 stph • Stainless Steel vessel with feedbox, overflow outlet and underflow valve connection
• Dewatering cone
• Internal elutriation water and air distribution manifold, and associated piping
• Flanged above manifold to promote ease of access and maintenance
• Stainless steel support frame
• Teeter water flow meter
• Air flow meter
• Underflow control Valve
• PID Loop controller and I/P Converter housed in Nema4 Enclosure
• 115VAC, 1PH, 50/60Hz, 1A
On Request Add