| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Inoculant alloy based on ferrosilicon or silicon and process for its preparation | US774323 | 1985-09-10 | US4643768A | 1987-02-17 | Heinz Bruckmann; Friedrich Wolfsgruber; Ernst A. Weiser |
| An inoculant alloy based on ferrosilicon or silicon for the manufacture of cast iron with lamellar, compact or spheroidal graphite is described, this alloy comprising(a) between 0.1 and 10% of barium and/or zirconium,(b) less than 2% of aluminum and(c) 0.3% of calcium.This inoculant alloy is distinguished by particularly good suppression of the precipitation of carbide and by its preparation process which is industrially simple and thus has favorable costs. | ||||||
| 102 | Additive for metallurgic liquids being effective to improve the characteristics of metal or metal alloy articles of manufacture | US703164 | 1985-02-19 | US4589915A | 1986-05-20 | Mario D. Gorgerino |
| 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, tripoli, obsidians, pumices, zeolites, vermiculite or bentonites, either singly or mixed together. | ||||||
| 103 | Method of making ferroboron and ferroborosilicon alloys and the alloys made by this method | US710969 | 1985-03-12 | US4569691A | 1986-02-11 | Rudolf Fichte; Friedrich Breuer; Reinhard Hahn; Hans-Joachim Retelsdorf |
| A method of making ferroboron or ferroborosilicon alloys in a low-shaft electrical furnace wherein the burden or charge has at least as a major portion of its carbon carrier, wood chips or particles which are carbonized to wood charcoal during the process and thus the charge has a porosity which permits adsorption action to prevent loss of volatile boron compounds. The charge also contains iron oxide and boron oxide, the electrodes of the furnace effecting a reduction of the boron oxide at a reduction zone just above the floor of the furnace. | ||||||
| 104 | Addition agent for cast iron | US299711 | 1981-09-08 | US4377411A | 1983-03-22 | William H. Moore |
| An inoculating alloy for addition to molten cast iron is disclosed. The composition is a silicon ferro alloy containing five to eight percent calcium as its active ingredient. | ||||||
| 105 | Process for the desiliconization of manganese alloys | US202446 | 1980-08-11 | US4354868A | 1982-10-19 | Michel Demange; Louis Septier |
| The invention concerns a process of desiliconization of manganese alloys in the liquid state.By injecting carbon dioxide into the liquid alloy, which injection can be effected by an additional neutral gas, or oxidizing agent, the silicon is oxidized to SiO.sub.2. The addition of lime or dolomite favors the slagging of the silicon. By this process the silicon content can be as low as 0.1%.The process is particularly applicable for obtaining a ferromanganese with low carbon and low silicon content. | ||||||
| 106 | Direct method for production of high-grade, high-purity ferromanganese | US89749 | 1979-10-30 | US4282032A | 1981-08-04 | Yoshishige Nagoya; Kosuke Murai; Hirota Amano; Yoshisada Soga |
| A direct method for the production of high-grade, high-purity ferromanganese comprising the steps of charging a molten Mn-containing material, a non-carbonaceous reducing agent and a slagging material in a reaction vessel and subjecting the reaction vessel to horizontal eccentric circular motion to mix and agitate the contents of the vessel, whereby the Mn oxide contained in the molten Mn-containing material is reduced by the non-carbonaceous reducing agent. | ||||||
| 107 | Process for the preparation of silicon or ferrosilicon | US41910 | 1979-05-24 | US4269620A | 1981-05-26 | Thomas Johansson |
| A process for the production of silicon or ferrosilicon by reduction of silicon oxide, optionally in the presence of iron oxide, by means of a carbonaceous reducing agent in a reduction furnace. The furnace operation is simplified and the yield is increased by making the supply of energy and the supply of silicon oxide, respectively, independent of each other and by adjusting the ratio between them in such a manner that the gases leaving the furnace have a silicon monoxide content below 10 mole percent. A controlled supply of at least a part of the silicon oxide to the hotter parts of the furnace can be used as a means of making the supply of energy and the supply of silicon oxide reciprocally adjustable. | ||||||
| 108 | Process for recovering and utilizing useful substances from molten metal produced during reduction treatment of steel slag | US44375 | 1979-06-01 | US4260414A | 1981-04-07 | Gyoichi Suzuki; Ryo Ando; Tatsuo Koyama; Shoji Kubodera; Renichi Kondo |
| A process for recovering and utilizing useful substances from a molten metal produced, when manufacturing a steel slag cement from a steel slag discharged from a top-blowing oxygen converter, during a reduction treatment of steel slag, which comprises the steps of: subjecting, in an acidic refining furnace, said molten metal to a primary oxidation refining treatment and a secondary oxidation refining treatment to recover a primary slag containing a large amount of TiO.sub.2 and SiO.sub.2 and a secondary slag containing a large amount of MnO and V.sub.2 O.sub.5, said primary slag being utilized as a blast furnace burden raw material serving as a TiO.sub.2 source, and said secondary slag being utilized as a raw material for producing ferromanganese and ferrovanadium; then, subjecting, in a basic Kaldo furnace, said molten metal to an oxidation refining treatment several times to recover a low-phosphorus high-quality steel and a slag, said slag being utilized as a Thomas phosphoric fertilizer. | ||||||
| 109 | Method for refining ferrophosphorus for use in the production of phosphorus-containing steel | US934665 | 1978-08-17 | US4201576A | 1980-05-06 | George D. Haley |
| A low elemental silicon source of ferrophosphorus used to increase the phosphorus content of molten iron, steel and their alloys is prepared by pulverizing ferrophosphorus having an elemental silicon content in excess of 1 percent by weight to enable it to pass a 3/8-inch sieve. Next, phosphoric acid is mixed with the ferrophosphorus. The phosphoric acid oxides substantially all of the elemental silicon to silica. After oxidation, the resulting composition is dried and formed into the desired size and shape for ease of handling during iron and steel making processes. | ||||||
| 110 | Method of rapidly decarburizing ferro- alloys with oxygen | US527826 | 1974-11-27 | US4165980A | 1979-08-28 | Friedrich Breuer; Karl Brotzmann; Gunter Duderstadt; Rudolf Fichte; Fritz Stadler |
| The invention relates to a method of rapidly decarburizing a high-carbon ro-alloy with oxygen for avoiding an undesirable oxidation of the principal alloying elements, especially chromium or manganese, comprising blowing an oxidizing gas under the surface of a bath of molten ferro-alloy from one or more gas-jacketed nozzles in an amount ranging between substantially 3 and 15 m.sup.3 S.T.P. per metric ton of ferro-alloy with reduction of the carbon content of the ferro-alloy at a rate of about 0.2% to 1%. Comminuted solids, especially particles of oxides of alkaline-earth metals such as powdered lime, may be admixed with the oxidizing gas to prevent the ejection of molten metal from the bath. | ||||||
| 111 | Zirconium alloy additive and method for making zirconium additions to steels | US616647 | 1975-09-25 | US4052202A | 1977-10-04 | Leon Luyckx |
| An additive and method of making zirconium additions to steel is provided in which an alloy of about 70% to 90% zirconium and the balance iron with residual impurities is formed into uniform sized pieces and added to a bath of molten steel with various possible techniques. | ||||||
| 112 | Method for making strontium additions to ferrosilicon | US645716 | 1975-12-31 | US4017310A | 1977-04-12 | James Herbert Downing; James Enoch Wells, III |
| Addition of strontium to silicon or ferrosilicon using a mixture containing carbon and at least one material selected from the group of strontium oxide, and strontium carbonate and strontium sulfate. | ||||||
| 113 | Process for the manufacture of pulverulent ferromanganese | US3471595D | 1966-04-08 | US3471595A | 1969-10-07 | FELDMANN KLAUS; FRANK KLAUS; GERHARDT WILFRIED; SCHMIDT PAUL; KANDLER JOACHIM |
| 114 | Ferrosilicon alloys | US37596164 | 1964-06-17 | US3350197A | 1967-10-31 | BEETON THOMAS B; HOFFMAN DANIEL J N; DU PLESSIS DAVID J |
| 115 | Process for making vanadium carbide briquettes | US43876565 | 1965-03-10 | US3342553A | 1967-09-19 | BUKER DONALD O; MERRILL TIMOTHY W |
| 116 | Manufacture of inoculants for cast iron | US38576364 | 1964-07-28 | US3333954A | 1967-08-01 | VICTOR DAWSON JOHN |
| 117 | Process for the production of ferromanganese products from manganesebearing materials | US52369855 | 1955-07-22 | US2830891A | 1958-04-15 | UDY MARVIN J |
| 118 | Addition agent and its use | US24332438 | 1938-12-01 | US2221783A | 1940-11-19 | CRITCHETT JAMES H; WALTER CRAFTS |
| 119 | Method of stabilizing silicon alloys | US15093837 | 1937-06-29 | US2171108A | 1939-08-29 | DOOM ERNEST F |
| 120 | Treating molten iron and steel with addition agents | US20193338 | 1938-04-14 | US2168561A | 1939-08-08 | CRITCHETT JAMES H; WALTER CRAFTS |
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