Technology for producing active magnesium oxide

The invention relates to a technology for producing active magnesium oxide, comprising the following steps: adding a pre-pyrolysis device on the basis of the technology for producing active magnesium oxide by the traditional carbonization process; introducing dry tail gas obtained by drying light ma...

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Bibliographic Details
Main Authors LIU RUNJING, LU CHIJIE, HU YONGQI, LIU BAOSHU, HU QINGFU, SONG LIYING, HU XIAOBO
Format Patent
LanguageChinese
English
Published 23.06.2010
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Summary:The invention relates to a technology for producing active magnesium oxide, comprising the following steps: adding a pre-pyrolysis device on the basis of the technology for producing active magnesium oxide by the traditional carbonization process; introducing dry tail gas obtained by drying light magnesium carbonate to the pre-pyrolysis device, carrying out direct heat exchange with heavy magnesium water, recovering heat in the tail gas, raising temperature of the heavy magnesium water from 10-30 DEG C to 40-55 DEG C and conveying heated heavy magnesium water to the pre-pyrolysis device for complete pyrolysis.In the invention, heat in the dry tail gas is recovered, temperature of heavy magnesium water is raised, primary energy consumption of unit product is lowered, magnesium carbonate dust carried in the dry tail gas is recovered, so that environmental pollution is reduced and multiple purposes are achieved.In addition, the economic and environmental benefits of the technology are remarkable.
Bibliography:Application Number: CN20091175301