Passivating metallic cuttings and turnings
US4075370A · kind A · utility
3Cited by
5References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 28, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Apr 28, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of passivating iron-containing cuttings and turnings to prevent overheating thereof during storage and transportation, wherein the cuttings and turnings are fed through a rotating tumbler drum while being mixed with an aqueous slurry of calcium oxide or hydroxide, the tumbling being continued until the cuttings or turnings are thoroughly coated with the slurry. In a preferred embodiment, the cuttings and turnings are passed through a tumbling drum continuously, with the slurry being sprayed onto them as they enter the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.