Method for separating calcite-rich low-grade fluorite barite paragenic ore
US11478801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jan 26, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for separating a calcite-rich low-grade fluorite barite paragenic ore, includes the following steps: S1, crushing; S2, performing classification on a crushed ore to obtain a fine-grained ore, a medium-grained ore and a coarse-grained ore; S3, performing jigging gravity separation on the medium-grained ore and the coarse-grained ore to obtain first barite concentrates and jigging tailings; S4, performing color sorting on the jigging tailings to obtain calcite minerals and color sorting tailings; S5, combining the fine-grained ore and the color sorting tailings, and then performing ore grinding to obtain feeding materials in flotation; S6, performing flotation on the feeding materials in flotation to obtain fluorite concentrates and flotation tailings; S7, performing chute gravity separation on the flotation tailings to obtain second barite concentrates and chute tailings. The method achieves an effect of obtaining high-quality acid-grade fluorite concentrates (CaF2≥98%).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.