EXTRACTION OF ALUMINUM OXIDE TRIHYDRATE IN THE BAYER PROCESS USING SCLEROGLUCAN

摘要

1. A method of producing alumina, comprising adding a composition containing one or more polysaccharides, one of which is scleroglucan, in a solution of a fluid stream in a Bayer process. The method according to claim 1, wherein the composition is added to the specified solution in the size classification trihydrate in the specified process for producing alumina. The method according to claim 1, wherein the composition is added to the specified solution in one or more places in the specified process, where the separation of solid and liquid. The method according to claim 1, wherein the composition is added to the specified solution in one or more places, whereby the rate of nucleation of one or more crystals of alumina trihydrate in the process is reduced. The method according to claim 1, wherein the composition is added to the specified solution in one or more places, whereby the rate of formation of deposits in the specified process is reduced. The method according to claim 1, wherein adding the composition increases the yield of alumina trihydrate when it is extracted in the process of producing alumina trihydrate by adding the composition of claim 1 to said solution in said process. The method of claim 1, further comprising adding at least one crosslinked polysaccharide. A composition comprising scleroglucan and a Bayer process solution.