Back to results
US 10,112,843 B2Granted
Use of polyols as scale control reagents in the mining processes
AssigneeEcolab USA Inc.
InventorsJing Wang, Xiaojin Harry Li, Heinrich Enoch Bode
Life of this patent
Estimating the term…
Abstract
In the mining process, linear, branched, hyperbranched or dendrimeric polyols or mixtures thereof are employed as process stabilization aids for aqueous solutions and, or suspensions of metal salts. A specific application area of the polyols is the stabilization of bauxite liquor in the Bayer process of producing alumina from bauxite.
Claims6
A method of increasing stability of pregnant liquor of a Bayer process comprising:
- adding to a primary settler feed of a Bayer process a linear or branched polyol having a molecular weight of from 500 to 1,000,000, wherein the linear or branched polyol is a polyglycerol.
Dependencies are inferred from the claim text.