| 4861369 |
Process for gaining electric energy in addition to producing molten pig iron and an arrangement for carrying out the process |
Ludwig von Bogdandy, Werner Kepplinger, Gero Papst, Rolf Hauk |
1989-08-29 |
| 4407864 |
Process for treating iron sponge |
Horst Sulzbacher, Gunther Saiger |
1983-10-04 |
| 4396421 |
Method of, and arrangement for, producing molten pig iron or steel pre-material |
Walter Lugscheider |
1983-08-02 |
| 4384886 |
Process for zinc removal from oxide-containing iron sources |
— |
1983-05-24 |
| 4376139 |
Process for treating metallic starting materials for smelting plants, particularly iron sponge particles |
Horst Sulzbacher, Gunther Saiger |
1983-03-08 |
| 4254167 |
Process of treating sponge iron for protection against reoxidation and apparatus for carrying out the process |
Horst Sulzbacher, Gunther Saiger |
1981-03-03 |