PREPARATION OF GYPSUM BY THE DESULFURIZATON FROM WASTE GAS
PURPOSE:A method to prepare gypsum by the dusulfurization from waste gas by applying maleic acid as a buffer, sulfurous and sulfuric acid for PH change, and Ca salt for a dissolution agent and a crystallization medium for gypsum.
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| creator | HIZAWA MASAKATSU WAKABAYASHI ATARU ASANAGI ETSUO |
| description | PURPOSE:A method to prepare gypsum by the dusulfurization from waste gas by applying maleic acid as a buffer, sulfurous and sulfuric acid for PH change, and Ca salt for a dissolution agent and a crystallization medium for gypsum. |
| format | Patent |
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| language | eng |
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| subjects | CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING |
| title | PREPARATION OF GYPSUM BY THE DESULFURIZATON FROM WASTE GAS |
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