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| Number | Title | Issue Date |
| 7875097 | Method of granulating raw material for sintering, and method of manufacturing sintered iron ore A raw material for sintering of 100% in total is blended so as to adjust iron-containing dust and/or sludge to 60% or more, and coarse grains having a grain size of 2 mm or larger to 20% or more on the weight basis, one-third or less of the total amount of addition ... | 01/25/2011 |
| 7000857 | Method of recycling A recycling method comprises classifying products to be recycled on the basis of classifier unit information, decomposing and fractionating some of the products on the basis of fractionator unit information. Applying a physical action to the fractionated products on... | 02/21/2006 |
| 6581779 | Method of the magnetic loading of a sintering material In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering mate... | 06/24/2003 |
| 6349833 | Method of feeding sintering material by use of magnetic forces In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering mate... | 02/26/2002 |
| 6258150 | Process for the beneficiation of waste material and the product developed therefrom An iron based product having at least a sufficient total ferrous content by weight to render the product commercially feasible wherein the product is derived by a process comprising the beneficiation of kish slag waste material having a relatively low fer... | 07/10/2001 |
| 5496526 | Production of intermediate grade manganese concentrate from low grade manganiferous ores A process for producing intermediate grade manganese concentrate from low grade manganiferous ores is disclosed. A low grade manganiferous ore containing silicon, iron, between 1 and 20 per cent manganese and oxides of silicon, iron and manganese is first... | 03/05/1996 |
| 5427607 | Process for the recovery of metallic iron from slags and other residues A process for the recovery of at least a major proportion of the useful metallic iron values in small sized ferrous slags and drosses in which the slags and drosses are subjected to at least one grinding step in a wet grinding mill. Depending on the size ... | 06/27/1995 |
| 5376162 | Autogenous roasting of iron ore Iron ore concentrate is converted to magnetic gamma hematite in an autogenous roasting operation which is self-sustaining. The iron ore concentrate is preheated and contained magnetite is oxidized to hematite. Hematite is reduced to magnetite using carbon... | 12/27/1994 |
| 5244494 | Autogenous roasting of iron ore Iron ore concentrate is converted to magnetic gamma hematite in an autogenous roasting operation which is self-sustaining. The iron ore concentrate is preheated and contained magnetite is oxidized to hematite. Hematite is reduced to magnetite using carbon... | 09/14/1993 |
| 4925487 | Dust collection in sintering of metallurgical products The separation rate of electrostatic precipitators associated with sintering plants is improved in that the exhaust gas is conditioned by means of solid particles. For that purpose, part of the coke breeze as a fuel for the sintering process is branched o... | 05/15/1990 |
| 4917723 | Method for agglomeration of iron bearing materials A method for compaction of iron bearing materials includes the steps of accumulating iron and steel plant waste materials, including iron bearing fines, hazardous mill waste products, fines, turnings, borings, sludge, dust, mill scale, and the like; and a... | 04/17/1990 |
| 4854946 | Method for treating blast furnace gas and apparatus for carrying out that method Blast furnace gas containing dust particles has the coarsest particles removed and the result wet scrubbed before being fed to a treatment apparatus for separating the remaining coarse dust, which has a low lead and zinc concentration. The gas dust is fed... | 08/08/1989 |
| 4670240 | Energy conservation during the smelting of ores The invention discloses processes for preparing matched sizes of electric furnace feed materials. With the matched sizes, components of the feed mixture do not separate inside the furnace and this decreases the electric energy for smelting. Preparation of... | 06/02/1987 |
| 4500350 | Disintegration of chromites In the disintegration of a chromite or chromium-containing residue, wherein the chromium-containing material is disintegrated with an alkaline compound in the presence of oxygen and a diluent at a temperature above about 800° C. and thereafter leached, t... | 02/19/1985 |
| 4491470 | Method for separating non-ferrous metals from ferruginous secondary substances A method for separating non-ferrous metals from ferruginous secondary substances such as residues and slurries from blast furnaces, steel mills, rolling mills, and the like. In accordance with the invention, a layer of the secondary substances is combined... | 01/01/1985 |
| 4274866 | Flotation and sintering of synthetic manganese carbonate A process in which manganese is recovered from manganese nodules after the nodules have been treated to recover base metals such as copper, nickel, cobalt, and molybdenum. The process includes the steps of reacting the manganese in the nodules to yield a ... | 06/23/1981 |
| 4201570 | Process for quenching of fine particulates A mass of fine particulates such as chlorinated by-products (often collected as "cyclone solids") from the chlorination of titaniferous material, said particulates comprising hydrolyzable metal halides, are converted to readily-handled granules by hydrati... | 05/06/1980 |
| 4148627 | Agglomeration of steel mill wastes A method for agglomerating particulate steel mill wastes such as roll scale and coke fines, and for utilizing the agglomerate in a metallurgical furnace. The wastes are mixed with Portland cement and cast into slabs which are thereafter broken and screene... | 04/10/1979 |
| 4129437 | Iron ore pellet having a specific shape and a method of making the same In the present invention, after a powdered iron ore has been subjected to granulation and firing into spherical pellets, a further crushing is applied while adjustment of the particle size of the crushed pellets is made so that the outer surface of the pe... | 12/12/1978 |
| 4110401 | Solid-liquid separation of laterite slurries A method is disclosed of separating a suspension of fine tailings particles from a material of value in a liquid medium which comprises, adding a small but effective amount of fluocculant to said liquid medium while mixing said liquid medium and continuin... | 08/29/1978 |
| 3984229 | Method for producing coarse powder, hardened iron oxide material from finely divided raw material substantially consisting of hematite and/or magnetite A method for agglomerating finely divided iron oxide material, substantially consisting of hematite and/or magnetite, preferably enriched iron ore concentrates, and hardening the agglomerates thus formed. The fine material is agglomerated by rolling, micr... | 10/05/1976 |
