| Patent Number |
Title Of Patent |
Date Issued |
| 4094665 |
Method for simultaneous combined production of electrical energy and crude iron |
June 13, 1978 |
| The invention relates to a method of combined production of electrical energy and crude iron and provides a further improvement over a method described in U.S. Pat. No. 3,985,544, issued Oct. 12, 1976; particularly, this method finds application when particulates of .ltoreq. 1 mm in size |
| 4084958 |
Method of reducing finely grained material containing iron oxides in a fluid bed |
April 18, 1978 |
| Fine-grained iron oxide reduction in a fluidized bed; a reducing agent in the form of fine-grained solid carbonaceous material containing volatile constituents is introduced into at least one zone of the fluidized bed; in said zone the volatile constituents are driven off, and a tarry ma |
| 4080511 |
Apparatus for the melt reduction of fine-grained iron oxide material |
March 21, 1978 |
| For the melt reduction in a DC electric arc furnace of iron oxide material of such a fine grain size that it can be blown about by the action of an electric arc, a hearth for the iron melt used, is provided with an outer wall and a roof down through which an arcing electrode extends with |
| 4079185 |
Method and apparatus for the melt reduction of iron oxides |
March 14, 1978 |
| For the melt reduction of iron oxides, arcs are formed between at least three arcing electrodes in an iron melt, the electrodes being symmetrically positioned about a common vertical axis. The arcs are powered by direct current with the electrodes being cathodic and the melt anodic, |
| 4042376 |
Method for carrying out endothermic reduction processes in a circulating fluid bed and an appara |
August 16, 1977 |
| A method for endothermic reduction of solid materials in a circulating fluid bed comprising a vertically elongated reaction zone of intermediate and lower sections separated by a transport zone, wherein due to high gas velocity therein essentially all materials entering the transport zon |
| 4033562 |
Furnace for melting solid ferrous pieces |
July 5, 1977 |
| A furnace for melting solid ferrous pieces such as pig iron and steel scrap, features a combination of electric induction heating and flame heating of the pieces which are charged into the furnace hearth via a charging stack up through which the products of combustion flow from the f |
| 4026679 |
Apparatus for and process of converting carbonaceous materials containing sulphur to an essentia |
May 31, 1977 |
| A process for the conversion of carbonaceous materials containing sulphur to an essentially sulphur-free combustible gas by gasification, comprising partially gasifying the carbonaceous material in a first circulating fluid bed by supplying to said zone adjusted streams of the carbonaceo |
| 4000060 |
Magnetic separator for hot mixtures containing magnetic components |
December 28, 1976 |
| A magnetic separator for a hot mixture has an enclosure with a bottom having means for fluidizing the mixture which travels through the enclosure from an entrance to an exit. Within the enclosure an internally water-cooled drum rotates and which is internally provided with magnetizin |
| 3985544 |
Method for simultaneous combined production of electrical energy and crude iron |
October 12, 1976 |
| The invention relates to a method of combined production of electrical energy and crude iron, comprising reducing iron oxides while keeping the temperature below the melting point of the crude iron during a pre-reduction and above said melting point during a final reduction. The pre- |
| 3947621 |
Furnace and method for reducing metal oxides to molten metal |
March 30, 1976 |
| To reduce metal oxides to molten metal, an electrically non-conductive, annular hearth is used, the hearth being radially corrugated to form radial ridges and valleys. A circumferentially continuous coke bed forming a closed electric circuit, is formed on this bed and heated to incan |
| 3932173 |
Inductially heated gas lift pump action method for melt reduction |
January 13, 1976 |
| A method for reducing iron oxide in a melt of iron by maintaining a reduction layer on the surface of the molten iron and passing the molten metal from the melt through vertical channels which communicate at the bottom of the metal melt an with a space at the top of the melt which is |
