| Patent Number |
Title Of Patent |
Date Issued |
| 4940488 |
Method of smelting reduction of ores containing metal oxides |
July 10, 1990 |
| Metal oxide ore is subjected to smelting reduction to obtain the molten metal by a method which comprises prereducing said ore in solid state in a prereduction furnace, thereafter melting said ore and carrying out final reduction thereof in a smelting reduction furnace, and at the same t |
| 4886246 |
Metal-making apparatus involving the smelting reduction of metallic oxides |
December 12, 1989 |
| A metal-making apparatus is suited for the production of molten iron from iron ore which is in a state of particles with a wide range in size. Included are a solid-state prereduction furnace for preliminarily reducing the raw ore particles in a solid state, and a smelting reduction furna |
| 4462793 |
Rotary kiln and method of using such a kiln |
July 31, 1984 |
| This disclosure relates to a rotary kiln for heating and calcining lime, waste, etc. and to a method of direct reduction of metal oxide using such a kiln. A cylindrical outer shell is mounted for rotation on its axis, and a stationary inner tube extends into the interior of the shell. Fu |
| 4348225 |
Batch process and static-bed type apparatus for reducing iron ore |
September 7, 1982 |
| Static bed type iron oxide reducing apparatus comprises reduction furnaces and cooling chambers respectively associated with the furnaces. Iron oxides are charged into the furnaces and reducing gas is applied to the raw materials to carry out a reducing reaction. After the iron oxides in |
