Continuous method of removing tin from lead
US4496394A · kind A · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Jul 15, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a continuous method of removing tin from lead. The method comprises maintaining a pool of molten lead at a temperature of from 510.degree. C. to 570.degree. C., introducing molten lead into the pool, injecting chlorine and oxygen into the molten lead in an amount to react with tin present as an impurity in the lead to form a tin-containing dross and then separating the lead from the dross. Separation may either be performed in the reaction vessel itself or in a separate settlement vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.