Mill scale de-oiling
US4995912A · kind A · utility
3Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1990 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jan 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/962
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A particular scrubbing agent/detergent formulation useful in removing contaminated oils and oily components from mill scale generated in a steel mill as disclosed. The formulation is based around medium aliphatic and heavy aromatic naphthas, linear and/or branched alkyl phenols, alkoxylated alkyl phenols, pentaethylene hexamine partial fatty acid amides, and alkyl and/or aromatic acid imidazolines. Optionally, fatty alcohol sulfonates can be used to protect the de-oiled mill scale surfaces from reabsorption of contaminating oily components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.