Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6602316 | Briquette for lowering the viscosity of metallurgical slag and process for its production Briquettes for the liquefaction of metallurgical slag are formed from a mixture containing, by weight, 85-98% slag from secondary aluminium processing, 1 to 8% polyvinyl acetate dispersion as the polymeric bonding agent and the remainder water, the brique... | 08/05/2003 |
| 6179895 | Basic tundish flux composition for steelmaking processes The tundish flux composition of the invention employs solid recycled ladle metallurgy furnace (LMF) slag as a fluidizing and refining base ingredient in a mixture of raw materials. The preferred recycled LMF slag material comprises about 35% to about 65% ... | 01/30/2001 |
| 5833881 | Composition for inhibiting deposits in the calcination of fluxed iron ore pellets A stable aqueous solution comprising a water soluble salt of a magnesium compound, a surfactant and a calcium salt inhibitor is used to reduce deposits in kilns or furnaces used to make iron ore agglomerates, known as pellets, during iron ore calcination.... | 11/10/1998 |
| 5782956 | Casting flux The invention relates to a casting flux for steels or alloys on an iron, nickel or cobalt basis which make heavy demands on the degree of oxidic purity for continuous or ingot casting and contain as the main components calcium oxide (CaO), aluminium oxide... | 07/21/1998 |
| 5245122 | Method and mixture for treating electric arc furnace dust A method and a mixture for chemically stabilizing electric arc furnace dust (EAFD) by entrapping the metals inherent in EAFD within a cementitiously hardened product from the mixture. The method includes using the pozzolanic characteristics of EAFD and fo... | 09/14/1993 |
| 5180421 | Method and apparatus for recovering useful products from waste streams Waste materials containing metal oxides and/or metals and their salts are converted to useful products. The waste materials are combined in such proportions that when heated, they form a composite that becomes molten and pourable at temperatures below abo... | 01/19/1993 |
| 5127939 | Synthetic olivine in the production of iron ore sinter An improved iron ore sinter for use in a blast furnace is made from a raw sinter mix comprising: iron-bearing materials; basic fluxes including a source of CaO and a source of MgO; and solid carbon-bearing material usually coke breeze, used as a heat-gene... | 07/07/1992 |
| 4909844 | Flux material for steelmaking A fused, hardened composition containing CaO, MgO and Al2 O3 for use in purifying molten metal during steel production and a method of making the same. The composition can be made up of electric arc furnace dust and lime or dolo-lime... | 03/20/1990 |
| 4814005 | Flux material for steelmaking A fused, hardened composition containing CaO, MgO and Al2 O3 for use in purifying molten metal during steel production and a method of making the same. The composition can be made up of electric arc furnace dust and lime or dolo-lime... | 03/21/1989 |
| 4708737 | Injectable reagents for molten metals Injectable reagents useful for innoculating molten process metals, such as molten iron, are prepared by effecting an impregnation of a minor amount of a molten metal reagent, such as Mg or Al or alloys of these, into small particles of a major amount of a... | 11/24/1987 |
| 4589915 | Additive for metallurgic liquids being effective to improve the characteristics of metal or metal alloy articles of manufacture An additive for metallurgic liquids is disclosed which is effective to efficiently remove slag therefrom and comprises at least one colloidal substance mainly consisting of colloidal silica. The additive may include such minerals as opal, kieselgur, tripo... | 05/20/1986 |
| 4372779 | Iron ore pellets containing coarse ore particles Iron ore pellets containing coarse ore particles, having a particle size distribution consisting of 25-40 wt % of coarse ore having a particle size greater than 0.1 mm, less than 21 wt % of medium ore having a particle size of 0.1-0.04 mm, and more than 3... | 02/08/1983 |
| 4367091 | Fired iron-ore pellets having at least two different precipitated slag phases and process for producing the same Fired iron-ore pellets are prepared which have at least two precipitated slag phases of different chemical compositions which appear among the iron-oxide grains of the pellets. The pellets each contain not less than 4% by weight of CaO+SiO2 so ... | 01/04/1983 |
| 4326887 | Basic process of producing basic fluxed pellets for iron-making A new fluxed pellet for use in iron-making is obtained by mixing and indurating about 1 to about 20%, by weight of the pellet, of ground melt shop slag fines with similarly ground iron ore concentrate, so as to achieve particular ranges of silica content,... | 04/27/1982 |
| 4063930 | Preparation of weatherable ferrite agglomerate A weatherable ferrite agglomerate is prepared by establishing compacted or other coherent bodies consisting of a mixture of fine particles of lime and of iron oxide, and heating the bodies, in a reducing atmosphere, at a suitable temperature up to about 2... | 12/20/1977 |
| 4010023 | Manufacture of alumina for use in the basic oxygen furnace In the method of making steel in the BOF furnace the use of a slag-forming agent which heretofore was considered a waste product resulting from a scrap-aluminum melting operation.... | 03/01/1977 |
| 3980465 | Process for producing iron ore oxidized pellets from magnetite concentrate Iron-ore oxidized pellets are produced from magnetite concentrate by the addition to the magnetite concentrate of at least one calcium compound selected from the group consisting of slaked lime, quicklime and limestone, to a basicity of 1 to 5, granulatin... | 09/14/1976 |
