微波外场中的硫酸钙碳热还原

Abstract

Abstract: Carbonthermal reduction of calcium sulfate heated by microwave with pulverized coal as reductant was studied.Results showed that the decomposition rate of calcium sulfate could reach 98.53% while the amount-of-substance ratio of carbon to sulfur was 0.6，the reaction temperature was 1 200 ℃，and reaction time was 10 min.The fluxing agent silica enhanced the reaction rate in solid state.Doping graphite powder could not only bring down the reaction temperature，but also reduced the reaction time.It was obvious that the reaction rate of calcium sulfate in microwave field was higher than that in normal situation.

Key words: microwave effect, carbonthermal reduction, calcium sulfate, gypsum, sulfur dioxide

CLC Number:

TQ125.1

LIU Hai-Yan, LIU Dai-Jun, YANG Jun, YU Yang, DENG Lin. Carbonthermal reduction of calcium sulfate in microwave field[J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(12): 13-.

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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Carbonthermal reduction of calcium sulfate in microwave field

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