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公开(公告)号：US5391215A
公开(公告)日：1995-02-21
申请号：US923456
申请日：1992-08-03
Applicant: Kenichi Kobayashi , Tatsuhiko Fujinuma
Inventor： Kenichi Kobayashi , Tatsuhiko Fujinuma
Abstract: There is proposed a novel method for manufacturing high-purity metallic chromium that can eliminate the problems of reduced heating capability of the furnace, contamination of produced metallic chromium and other disadvantages related to the operation of the furnace. According to the invention, one or more than one of easily sulfidable metals selected from Sn, Ni and Cu are added to crude metallic chromium containing impurities and the mixture is loaded into a vacuum furnace equipped with heating elements of graphite and heated to 1,200.degree. to 1,500.degree. C. in an atmosphere with reduced pressure of between 0.1 and 5 torr.
Abstract translation: 提出了一种制造高纯度金属铬的新方法，可以消除炉子加热能力降低，产生的金属铬污染等问题，以及与炉子运行有关的其他缺点。 根据本发明，将一种或多于一种选自Sn，Ni和Cu的易硫化金属加入到含金属铬的杂质中，并将该混合物装入装有石墨加热元件的真空炉中并加热至1200℃至 在0.1至5托之间的减压气氛中为1500℃。
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公开(公告)号：US4919711A
公开(公告)日：1990-04-24
申请号：US347114
申请日：1989-05-01
Applicant: Bruce E. Banyai , Denis E. LaSota , Dennis L. Struck
Inventor： Bruce E. Banyai , Denis E. LaSota , Dennis L. Struck
Abstract: A binder useful for agglomerating a concentrated ore material in the presence of water comprising (a) a water-soluble polymer selected from the group consisting of alkali metal salts of carboxymethyl celluylose or carboxymethyl hydroxyethyl cellulose and (b) sodium tripolyphosphate, a process for agglomerating the concentrated ore material using this binder, and the agglomerated product of this process, are disclosed.
Abstract translation: 一种用于在水存在下聚集浓缩矿石材料的粘合剂，其包含（a）选自羧甲基纤维素或羧甲基羟乙基纤维素的碱金属盐的水溶性聚合物和（b）三聚磷酸钠，聚集方法 使用该粘合剂的浓缩矿石材料和该方法的附聚产物。
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63.发明授权Process for producing agglomerates of metal containing ores and the product of the process 失效用于生产含金属矿石的附聚物的方法和该方法的产物
公开(公告)号：US4288245A
公开(公告)日：1981-09-08
申请号：US741981
申请日：1976-11-15
Applicant: Herm J. Roorda , Max J. Jipping
Inventor： Herm J. Roorda , Max J. Jipping
CPC classification number: C22B1/242 , Y10T428/2982
Abstract: A process is provided for the agglomeration or pelletizing of metallic ores in the presence of water with a binder containing an alkali metal salt of carboxymethyl cellulose in an amount of at least 0.01%, calculated on the weight of the dry ore material, in combination with one or more salts derived from an alkali metal and a low-molecular weak acid having a pK value higher than 3 and a molecular weight lower than 500 in an amount of at least 2%, calculated on the weight of the alkali metal salt of carboxymethyl cellulose.
Abstract translation: 提供了一种在水存在下使金属矿石与含有羧甲基纤维素的碱金属盐的粘合剂在至少0.01％（以干矿石材料的重量计）的量结合或造粒的方法，其结合 一种或多种衍生自碱金属和低分子弱酸的盐，其中pK值高于3，分子量低于500，其量为至少2％，以羧甲基纤维素的碱金属盐的重量计算 纤维素
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公开(公告)号：US4004918A
公开(公告)日：1977-01-25
申请号：US586375
申请日：1975-06-12
Applicant: Hiroshi Fukuoka , Teruhiko Kameyama , Yuji Takahashi , Kenji Nicho , Tatsuo Misawa , Tsuneyuki Inoue , Kimiaki Imai
Inventor： Hiroshi Fukuoka , Teruhiko Kameyama , Yuji Takahashi , Kenji Nicho , Tatsuo Misawa , Tsuneyuki Inoue , Kimiaki Imai
CPC classification number: C22B7/02 , C21B11/10 , C21B13/0006 , C22B1/242 , Y02P10/214 , Y02P10/224 , Y02P10/23
Abstract: A method of treating waste produced during stainless steel making is disclosed. The method comprises the steps of kneading a sludge cake with a mixture of dust and scale to obtain a kneaded mass, adding an organic binder and eventually adding water with an inorganic binder to said kneaded mass, shaping said kneaded mass into a briquette, and heating said briquette at a low temperature. The briquette obtained can be used as a ferroalloy making raw material.Metal oxides contained in the briquette are reduced by a dry reduction refining added with a carbonaceous reducing agent and eventually with a flux to separate usable metals.
Abstract translation: 公开了一种处理在不锈钢制造过程中产生的废弃物的方法。 该方法包括以下步骤：将污泥饼与粉尘和水垢的混合物捏合以获得捏合物料，加入有机粘合剂，最后用无机粘合剂加水至所述捏合物料中，将所述捏合物料成型为团块，加热 在低温下表示团块。 获得的煤块可以用作铁合金原料。
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公开(公告)号：US3376145A
公开(公告)日：1968-04-02
申请号：US28775363
申请日：1963-06-14
Applicant: BENTON CLAY CO
Inventor： WALLACE WILLIAM K
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Patent Agency Ranking
公开(公告)号：US2833642A
公开(公告)日：1958-05-06
申请号：US46814254
申请日：1954-11-10
Applicant: GEN MILLS INC
Inventor： BARKER NORVAL G , ROBERT NORDGREN
IPC: C22B1/242
CPC classification number: C22B1/242
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公开(公告)号：US11608543B2
公开(公告)日：2023-03-21
申请号：US16094493
申请日：2017-04-26
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takashi Iseki , Yukihiro Goda , Jun-ichi Kobayashi , Shuji Okada
Abstract: The present invention addresses the problem, in methods for producing a metal or alloy by reducing a mixture that contains an oxide ore, of providing an oxide ore smelting method with good productivity and efficiency. The present invention is an oxide ore smelting method for producing a metal or alloy by reducing a mixture that contains an oxide ore, the method comprising at least: a mixing step S1 for mixing an oxide ore with a carbonaceous reducing agent; a mixture-molding step S2 for molding the mixture obtained to obtain a mixture-molded body; and a reducing step S3 for heating the mixture-molded body obtained at a specified reducing temperature in a reducing furnace.
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公开(公告)号：US10815548B2
公开(公告)日：2020-10-27
申请号：US15612577
申请日：2017-06-02
Abstract: A method for producing briquettes from pellet fines, DRI sludge, DRI fines and dust from DRI dedusting systems and, in this way, reincorporating same into steel production processes, thereby contributing to the re-use of the by-products of these processes, as well as minimizing the stocks of these types of materials and, consequently, helping to improve the environment. The invention comprises: grinding and sieving the pellet fines and the DRI sludge; sieving the DRI fines; storing the dust from DRI dedusting systems; briquetting with roller presses, using liquid sodium silicate and bentonite or composite Portland cement as binders; sieving the briquettes; shredding the edges and waste of the fresh briquettes; and curing in order to improve the physical properties thereof, such as strength. Once cured, the fresh briquette can be stored or sent directly to direct-reduced iron production processes for use as part of the feedstock for reduction ovens or reactors.
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69.发明授权公开(公告)号：US10781504B2
公开(公告)日：2020-09-22
申请号：US15487074
申请日：2017-04-13
Applicant: MT2, LLC
Inventor： Michael L. Enos , James M. Barthel , Trevor C. Schwaab
IPC: C22B3/00 , C22B1/242 , C22B1/248 , C22B7/00 , B09B3/00 , C22B13/02 , C22B1/244 , C22B1/243 , C22B15/00 , A62D3/33 , A62D101/06 , A62D101/43
Abstract: Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.
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公开(公告)号：US10697041B2
公开(公告)日：2020-06-30
申请号：US15820992
申请日：2017-11-22
Applicant: SungEel HiMetal
Inventor： Young-Myoung Seo , Kang-Myung Yi , Ki-Woong Lee , Suk-Hyun Byun , Hyun-Jin Sung
Abstract: The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).
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