FIELD: chemistry.
SUBSTANCE: invention provides methods and compositions for inhibiting the accumulation of DSP scale in a closed liquor circuit of Bayer process equipment. Described herein is a method for reducing aluminosilicate scale in the Bayer process, including: adding to a Bayer liquor a non-polymeric reaction product obtained as a result of the reaction: the first reaction product of a surface-active agent, an amine-binding agent selected from linear or branched, aliphatic or cycloaliphatic monoamines, diamines, triamines, butamines and nentamines, and an epoxide-binding substance, where the surface-active agent is dodecyl-1,3-propanediamine; and glycidoxy alkyltrimethoxysilane.
EFFECT: invention provides a significant reduction in the total cost of operating the Bayer process.
10 cl, 7 dwg, 12 tbl
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