Reducing aluminosilicate scale in the Bayer process
US9944534B2 · kind B2 · utility
0Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Nov 8, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more particular silane based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.