Chemistry of inorganic compounds – Halogen or compound thereof – Binary compound containing metal
Patent
1996-04-29
2000-11-07
Valentine, Donald R.
Chemistry of inorganic compounds
Halogen or compound thereof
Binary compound containing metal
205404, C01F 532, C25C 304
Patent
active
061432709
ABSTRACT:
Anhydrous magnesium chloride is prepared by a process in which hydrated magnesium chloride (10) is mixed in a vessel (11) with ethylene glycol (12). The mixture (13) is dehydrated in distillation columns (14, 15 and 16) with the dehydrated ethylene glycol magnesium chloride solution (20) pumped into a crystalliser (21) simultaneously with the separate addition of anhydrous ammonia gas (22) to the crystalliser (21). Prior to the introduction of reactants (20 and 22), the crystalliser (21) contains ethylene glycol saturated with ammonia. A crystalliser slurry of magnesium chloride hexammoniate (23) is continuously pumped from the crystalliser (21) into a pressure filter (24) where the crystals are washed with methanol saturated with ammonia (26). The washed crystals (27) are transferred to a fluidised bed calciner (28) where methanol is evaporated from the crystals at 120.degree. C. and thereafter the crystals are calcined to anhydrous magnesium chloride at 450.degree. C.
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"A New Econcomical for Making Anhydrous Magnesium Chloride", Dr. Ronald J. Allain, Nalco Chemical Co., Texas, pp. 929-937. No Month No Year.
"New Economical Method for Producing Anhydrous Magnesium Chloride", Dr. Ronald J. Allain, pp. 62-64, Jun. 1979.
Hourn Michael Matthew
Jenkins David Hughes
Kodama Manabu
Sheehan Gregory John
Wong Fook-Sin
Australian Magnesium Corporation Pty Ltd.
Commonwealth Scientific and Industrial Research Organisation
Valentine Donald R.
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