Aluminate Liquor
Weak Aluminate Liquor (spent liquor) from the Bayer process is concentrated (green liquor) and returned to the digester to recycle Caustic.
Related Technologies
Flash Evaporation / Crystallisation
Multiple Effect Evaporator (MEE)
Falling Film Evaporator (FF)
Forced Circulation Evaporator / Crystalliser (FC)
Value
- High steam economy
- High on-stream factor
- Flexible configuration maintains production while allowing for the washing out of any one effect
- Operational flexibility allows for a range of production rates
- High grade condensate
Process
- Evaporation capacity up to 300 t/h per train
- Various evaporative systems can be supplied: Multi-Stage Flash, Multi-Stage Falling Film, or Forced Circulation (for crystallising liquors).
- Crystallisation of Carbonate and Vanadate
- Separation of suspended particles
Flash Evaporation Flow Diagram
Falling Film Evaporation Flow Diagram
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