| abstract |
The present invention relates to bauxite milling compositions that can significantly reduce the viscosity of a bauxite slurry, thereby enabling alumina refinery plants to increase the milling or pre-desilication yield of the mill. bauxite. The invention describes methods for improving the grinding of a bayerite-containing sludge by a Bayer process, comprising: adding an effective amount of a bauxite grinding composition to the slurry containing bauxite before or after during the milling stage or the pre-desilication stage, the bauxite milling composition comprising dextran, maltitol or a copolymer. |