METHOD OF PRODUCTION OF THE ENRICHED CARNALLITE Russian patent published in 2007 - IPC C01F5/34 C01D3/04 

FIELD: chemical industry; mining industry; methods of production of the enriched carnallite from the natural ores.

SUBSTANCE: the invention presents the method of production of the enriched carnallite and is pertaining to the chemical technology of the inorganic substances, in particular, to the technology of production of the enriched carnallite from the natural ores in compliance with the halurgy technology and may be used at the chemical enterprises producing the enriched carnallite. The offered method of production of the enriched carnallite provides for dissolution the carnallite ore by the mother alkali liquor, clarification of the saturated mother alkali liquor, the vacuum-crystallization of the carnallite from the saturated mother alkali liquor, thickening and centrifuging of the carnallite. The sediment of the carnallite received after the stage of the centrifuging is treated with the carbamide solution in the quantity of 0.01÷1.00 % from the mass of the sediment. The invention allows to prevent reduction of the output of the enriched carnallite.

EFFECT: the invention allows to prevent reduction of the output of the enriched carnallite.

1 tbl