| 4617671 |
Arrangement for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
Walter Lugscheider, Wilhelm Schiffer, Alois Leutgob |
1986-10-14 |
| 4572281 |
Method and arrangement for recovering the sensible heat of slag |
Bernhard Enkner |
1986-02-25 |
| 4561883 |
Method of producing metals or metal alloys and an arrangement therefor |
Bernhard Enkner, Gerhard Hubweber |
1985-12-31 |
| 4533385 |
Method for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
Walter Lugscheider, Wilhelm Schiffer, Alois Leutgob |
1985-08-06 |
| 4518417 |
Method of, and arrangement for, reducing oxide-containing fine-particle ores |
Walter Lugscheider, Alois Leutgob, Ernst Riegler |
1985-05-21 |
| 4197084 |
Method of treating lumpy and grained materials with gaseous media |
Ernst Wildling |
1980-04-08 |