METHOD OF ALUMINATE SOLUTION DECOMPOSITION OPERATION Russian patent published in 1995 - IPC

FIELD: chemical technology. SUBSTANCE: aluminate solution before its feeding to decomposers is divided for two parts and cooled up to the different temperatures. Every current is mixed with seed aluminium hydroxide and prepared suspension is fed through the distributor to parallel working batteries. Granule composition of aluminium hydroxide in seed suspension is measured. Process in batteries is carried out at different temperatures difference of which is maintained at the range 2-10 C. In the case of sign and deviation value change of granule composition from the assigned value by 5-25% the direction of prepared suspension into working batteries is changed. Method is used for alumina production. EFFECT: improved method of operation. 1 dwg