Iron ore pellet having a specific shape and a method of making the same
US4129437A · kind A · utility
12Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1976 |
| Grant date | Dec 12, 1978 |
| Priority date | — |
| Expiry date | May 26, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B1/2406
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In the present invention, after a powdered iron ore has been subjected to granulation and firing into spherical pellets, a further crushing is applied while adjustment of the particle size of the crushed pellets is made so that the outer surface of the pellets is composed of spherically formed surfaces and crushed surfaces. By doing so, improvements are made in the angle of repose and in the reducing characteristic of iron ore pellets, and eventually an efficient and highly economical blast furnace operation is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.