Calcination process
There is disclosed a process for producing metal oxide in a flash calciner, the process comprising a) pre-heating a metal carbonate particulate stream, prior to the particulate stream being fed into the flash calciner; and b) calcining the particulate stream in a flash calciner to produce a raw stre...
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Sprache: | eng |
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Zusammenfassung: | There is disclosed a process for producing metal oxide in a flash calciner, the process comprising a) pre-heating a metal carbonate particulate stream, prior to the particulate stream being fed into the flash calciner; and b) calcining the particulate stream in a flash calciner to produce a raw stream comprising metal oxide and a flue gas comprising CO2, wherein at least a portion of the flue gas comprising CO2 produced in step (b) is used to pre-heat the metal carbonate particulate in step (a). The metal carbonate may be calcium carbonate or magnesium carbonate. Also disclosed is a process for producing metal oxide in a flash calciner characterised by recycling pressurised flue gas in a closed loop path to the flash calciner and a process for producing metal oxide in a flash calciner characterised by recycling heated flue gas to auto-ignite fuel within the calciner. |
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