Reducing ash content of molten sulfur
US4313922A · kind A · utility
3Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Aug 1, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/0232
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for reducing the concentration of ash-forming compounds in molten sulfur is disclosed. The subject invention is directed at the addition to the molten sulfur of an ash flotation agent selected from the class consisting of sulfur compounds in an oxidation state lower than maximum, phosphorous compounds, and ammonium amide, and amino compounds to cause at least a portion of the ash-forming compounds to float to the surface of the molten sulfur storage facility. The ash-forming compounds which collect at the surface of the molten sulfur facility may then be removed by conventional means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.