Gypsum washer
US11292009B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Inventor
Key dates
| Filing date | Jul 22, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Jul 22, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gypsum washer includes a rotating trommel receiving raw material and a flow of water, and having paddles tilted to reduce impacts of the gypsum passing through the trommel while still providing a washing action. Bentonite separates from the gypsum in the trommel, liquifies, and is released through a mesh screen at the end of the trommel separating from the gypsum. The gypsum is released from the trommel into a water fed trough, scooped from the trough, and released into a storage area. The liquified bentonite is carried by a water flow into one or more settlement tanks, and recovered for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.