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    • 4. 发明专利
    • THERMALLY DECOMPOSING AND MELTING FURNACE
    • JPS5836922A
    • 1983-03-04
    • JP13325081
    • 1981-08-27
    • UBE INDUSTRIES
    • SUZUKAWA SATOICHIKOBAYASHI KAZUICHIAKEKI SEIJI
    • B01J6/00C01F5/00C01F5/30F27B5/00
    • PURPOSE:To obtain high purity anhydrous magnesium chloride with a thermally decomposing and melting furnace having a simple structure by forming a degassing section packed with carbon granules in the retort enclosed with a heat insulator and by heating the retort from the outside. CONSTITUTION:A furnace body 2 covered with refractory brick 2' is installed at the outside of a restort 1 formed with an opaque quartz tube, etc., and the retort 1 is kept warm and insulated from heat. A degassing section 5 packed with carbon granules is formed at an intermediate part of the retort 1, the upper space is used as a thermally decomposing section 6, and the lower space is used as a holding section 7. An intermediate product fed from the top of the furnace is thermally decomposed in the section 6, and most of the gaseous component is released to give anhydrous magnesium chloride powder. The powder is melted on the upper surface of the section 5, the melt is passed through the carbon packed bed to filter off the remaining gaseous component and foreign matter, and the purified melt gathers in the section 7. By making use of this melting furnace, anhydrous magnesium chloride of high purity and grade for manufacturing metallic magnesium by electrolysis is obtd.