Chemical phosphoric acid production unit provided with a phosphogypsum discharge system
US10864493B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A chemical phosphoric acid production unit, comprising The discharge system comprises a chute of which the inlet is located inside the receiving device and arranged communicate with the receiving device, and a flap moveable around an axis of rotation and configured to open according to a predetermined angle corresponding to a predetermined section for the passage of a fraction of phosphogypsum through the inlet of the chute, and to close in order to prevent the passage of phosphogypsum into the chute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.