Method for preparing dry collected fume for use in metallurgical furnaces
USRE30488E · kind E · reissue
1Cited by
8References
3Claims
0Family size
Assignee
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Key dates
| Filing date | May 5, 1978 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | May 5, 1998 |
Classification
- Technology area (CPC —)General
Abstract
A method for preparing strong, stable "green" balls of dry-collected iron-bearing fume, which contains not less than about 8% combined amount of lime (CaO) and magnesia (MgO). The fume is charged to a balling device where there is added to the fume a quantity of water equal to both the stoichiometric amount required to completely hydrate such lime and magnesia and to produce in the "green" balls a water content between about 7%-12%. The residence time of the fume on the balling device is not less than about 8 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.