Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1994-03-14
1995-07-18
Lander, Ferris
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
423555, C01F 1110, C01F 1108
Patent
active
054339391
ABSTRACT:
A cyclic process of subjecting calcium sulfide particles to alternating oxidizing and reducing conditions. The impenetrable shell of calcium sulfate which forms during the oxidation phase of the cycle is destroyed by the subsequent reducing phase. By repeating the cycle many times the particles are converted completely into calcium oxide at a reasonable temperature of about 1000.degree. C. The process can be carried out in a fluidized bed reactor either by maintaining both oxidizing and reducing zones within the same fluidized bed or by varying the gas phase throughout the fluidized bed in a periodic manner.
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Hendrikson Stuart L.
Lander Ferris
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