C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/175
C01F 5/34 (2006.01)
Patent
CA 1117732
Abstract of the Disclosure A method of dehydrating carnallite, in which preliminarily enriched carnallite with 39-41 wt.% water is heated up to 205- 230°C by fuel combustion products having a temperature of 500-600°C, and a partially dehydrated carnallite with 3-8 wt.% water is obtained. Said dehydrated carnallite is melted in a reaction zone and the melt is subjected to the action of HCl is a chlorinating agent. Thereafter the melted carnallite is allowed to settle from solid impurities and, as a result, dehydrated carnallite is obtained with water content less than 0.5 wt.%. The melting of partially dehydrated carnallite with 3-8 wt.% water is performed with the aid of fuel combustion products containing air and water vapour having a temperature of 1050°C-1150°C. These products are introduced tangently to the surface defining the reaction zone at a rate ensuring the formation of an intensive eddy flow of gases, which occupies the whole volume of the reaction zone. The partially dehydrated carnal- lite is thrown on the side surface of the reaction zone by the eddy flow due to the action of centrifugal forces, a continuous film of the melt being formed on the side surface of the reaction zone. Gases containing the products of fuel combustion and the gases liberating upon interaction of the chlorinating agent with the carnallite melt being removed from the reaction zone. The present invention can be successfully used in titanium industry as well as in magnesium industry in which dehydrated carnallite is one of the types of stock material for electrolytic production of magnesium and chlorine.
297735
Andreev German A.
Eltsov Boris I.
Kechina Galina D.
Korotkov Jury A.
Mikhailov Eduard F.
Bereznikovsky Filial Vsesojuznogo Nauchno- Issledovatelskogo I.
Bereznikovsky Titano-Magnievy Kombinat
Marks & Clerk
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