-
公开(公告)号：US11753707B2
公开(公告)日：2023-09-12
申请号：US17421368
申请日：2020-01-09
申请人： Jingran Wang , Jiahao Wang , Jiahui Wang
发明人： Jingran Wang
CPC分类号： C22C33/003 , C22C1/02 , C22C35/005 , C22C45/02
摘要： Provided is a method for preparing an amorphous strip master alloy. The method includes: providing an amorphous alloy and cementite Fe3C; and placing the amorphous alloy and the cementite Fe3C in a smelting furnace for smelting treatment to obtain the amorphous strip master alloy, wherein elements constituting the amorphous alloy include Fe element, Si element and B element. An amorphous strip master alloy prepared by the preparation method is also provided.
-
公开(公告)号：US20190003012A1
公开(公告)日：2019-01-03
申请号：US15695551
申请日：2017-09-05
CPC分类号： C22B34/24 , C22B1/24 , C22B4/06 , C22B5/04 , C22B5/16 , C22B9/04 , C22C27/02 , C22C33/00 , C22C35/005
摘要： Refined niobium-based ferroalloys are provided by removing lead and other impurities therefrom by a process comprising charging niobium ore concentrate and/or niobium oxide or a mixture of niobium oxides to a metallothermic reaction chamber, admixing the ore concentrate and/or niobium oxide with a reducing agent, initiating a metallothermic reaction, under reduced pressure; and allowing the reaction product to solidify and cool; crushing the reaction product or crushing the niobium-based ferroalloy previously reduced in open air, and charging the crushed product to a melting crucible within a vacuum induction melting furnace, lowering the pressure within the furnace to below 1 mbar, and melting the crushed product while vaporizing the impurities contained therein.
-
公开(公告)号：US20130177469A1
公开(公告)日：2013-07-11
申请号：US13724880
申请日：2012-12-21
CPC分类号： C22C1/02 , C22C35/005 , C22C38/00 , C22C38/002 , C22C38/12 , C22C38/14
摘要： Methods comprising providing a composition comprising iron and a high melting point element; heating the composition to an elevated temperature up to about 3,500° F.; holding the composition at the elevated temperature for a time sufficient for the heat's temperature to stabilize; and allowing the composition to cool or solidify. Methods comprising providing a master alloy comprising iron and up to about 30% by weight of a high melting point element; and adding the master alloy to a heat of steel. Compositions comprising an alloy of iron and high melting point element in which the alloy is up to about 30% by weight of the high melting point element. Compositions comprising an alloy of iron and high melting point element having a substantially uniform microstructure.
摘要翻译： 方法包括提供包含铁和高熔点元素的组合物; 将组合物加热至高达约3,500°F的升高温度; 将组合物在升高的温度下保持足以使热的温度稳定的时间; 并使组合物冷却或固化。 方法包括提供包含铁和高达约30重量％的高熔点元素的母合金; 并将母合金加入到钢的热中。 包含铁和高熔点元素的合金的组合物，其中合金高达高熔点元素的约30重量％。 包含铁和高熔点元素的合金的组合物具有基本均匀的微结构。
-
4.发明授权Method of making ferroboron and ferroborosilicon alloys and the alloys made by this method 失效制备铁硼和铁硼硅合金的方法以及通过该方法制备的合金
公开(公告)号：US4569691A
公开(公告)日：1986-02-11
申请号：US710969
申请日：1985-03-12
CPC分类号： C22C33/003 , C22C35/005
摘要： 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.
摘要翻译： 一种在低轴电炉中制备铁硼或铁硼硅合金的方法，其中所述负荷或电荷至少具有其碳载体，木屑或颗粒的至少主要部分，所述碳载体，木屑或颗粒在该过程期间被碳化至木炭，因此具有 允许吸附作用以防止挥发性硼化合物损失的孔隙率。 电荷还含有氧化铁和氧化硼，炉的电极在正好在炉底上的还原区域实现了氧化硼的还原。
-
公开(公告)号：US4489041A
公开(公告)日：1984-12-18
申请号：US511368
申请日：1983-07-06
IPC分类号： B01J12/00 , B01J19/08 , C22B4/00 , C22B9/22 , C22C35/00 , H01J37/32 , H05H1/28 , H05H1/42 , C07G13/00
CPC分类号： H01J37/3244 , B01J12/002 , B01J19/088 , C22B4/00 , C22B4/005 , C22B9/226 , C22C35/005 , H05H1/28 , H05H1/42 , B01J2219/0894
摘要： An improved apparatus and an associated method for the reduction of low melting point oxides in a falling film plasma reactor is disclosed. The improved torch provides a radiation barrier to avoid premature melting of the reactants that cause clogging of the reactor.
摘要翻译： 公开了一种用于还原降膜等离子体反应器中的低熔点氧化物的改进的装置和相关方法。 改进的手电筒提供辐射屏障，以避免反应物的过早熔化，导致反应器堵塞。
-
公开(公告)号：US4441921A
公开(公告)日：1984-04-10
申请号：US434753
申请日：1982-10-18
申请人： Thomas R. Curr , Nicholas A. Barcza
发明人： Thomas R. Curr , Nicholas A. Barcza
CPC分类号： C21B13/125 , C22B4/005 , C22C35/005
摘要： A process for the production of ferrochromium by smelting chromite ore and in which ferrochromium fines may form a part of the feed materials, or for the further treatment of ferrochromium fines alone, in each case in the presence of a limited amount of carbonaceous reductant, is provided. The amount of reductant is generally limited to a maximum of 150% of the stoichiometric amount required for reduction of all the chromium and iron to metal or carbide form and to produce the required level of silicon in the product (normally 2 to 4%). The process is carried out by feeding the preferably premixed feed materials to a liquid slag phase in the bath of the furnace at a rate chosen to maintain the molten state and temperature of such material. Oxygen is substantially excluded from the reaction zone which is heated by a transferred arc thermal plasma. The feed materials generally include slagging agents chosen to ensure that the slag liquidus temperature and metal liquidus temperature are roughly the same or that of the slag is less than that of the metal, but in any event such that the slag phase remains liquid throughout the process.
摘要翻译： 在有限量的碳质还原剂的存在下，在每种情况下，通过熔炼铬铁矿生产铬铁，其中铬铁矿可以形成原料的一部分或单独进一步处理铬铁矿的方法是 提供。 还原剂的量通常限制为将所有铬和铁还原成金属或碳化物形式所需的化学计量量的最大值的150％，并在产品中产生所需的硅含量（通常为2至4％）。 该方法通过将优选预混合的进料材料以选择以保持这种材料的熔融状态和温度的速率供给到炉的浴中的液体渣相来进行。 氧被基本排除在被转移的电弧热等离子体加热的反应区中。 进料材料通常包括选矿渣，以确保炉渣液相线温度和金属液相线温度大致相同或者熔渣的熔渣温度小于金属，但在任何情况下，渣相在整个过程中保持液态 。
-
公开(公告)号：US4435209A
公开(公告)日：1984-03-06
申请号：US363812
申请日：1982-03-31
申请人： Thomas Johansson
发明人： Thomas Johansson
IPC分类号： C22C33/04 , C01B33/02 , C01B33/025 , C22C35/00 , C21C5/52
CPC分类号： C01B33/025 , C22C35/005
摘要： A process for the production of silicon or ferrosilicon by reduction of silicon oxide, optionally in the presence of iron or iron oxide, using a carbonaceous reducing agent, in a reduction furnace. The yield is improved without harmful temperature rises if the ratio of the amount of thermal energy supplied to the furnace to the amount of silicon oxide supplied to the furnace is made adjustable in such a manner that a value for the ratio can be set within an interval, which interval in its lower end is limited by the lowest value permitting constant reduction of the silicon monoxide and silicon directly with a certain part of the reducing agent which is supplied at the top of the furnace, because the amount of produced silicon monoxide is insufficient for complete conversion of all the carbonaceous reducing agent to silicon carbide at the top of the furnace, and in its upper end is limited by the highest value permitting constant reduction of the silicon oxide raw material to silicon monoxide and silicon directly with silicon carbide, because the amount of produced silicon monoxide is sufficient for conversion of the carbonaceous reducing agent to silicon carbide at the top of the furnace, and that a sufficient content of reducing agent is maintained in the lower, hotter, parts of the furnace so that reduction to some extent can take place directly with the reducing agent.
摘要翻译： 在还原炉中，通过还原氧化硅，任选地在铁或氧化铁存在下，使用碳质还原剂来生产硅或硅铁的方法。 如果供应给炉的热能的量与提供给炉的氧化硅的量的比例可以调整，使得该比率的值可以设定在间隔内 ，其下限的间隔受限于允许一氧化硅和硅直接与在炉顶部供应的还原剂的一部分直接还原的最低值，因为所产生的一氧化硅的量不足 为了将所有碳质还原剂完全转化为炉顶部的碳化硅，并且其上限受限于允许氧化硅原料直接用碳化硅直接还原成一氧化硅和硅的最高值，因为 所产生的一氧化硅的量足以将碳质还原剂转化为在顶部的碳化硅 并且在炉的下部，较热部分保持足够量的还原剂，使得在一定程度上还原可以与还原剂直接发生。
-
公开(公告)号：US4377411A
公开(公告)日：1983-03-22
申请号：US299711
申请日：1981-09-08
申请人： William H. Moore
发明人： William H. Moore
CPC分类号： C21C1/105 , C22C35/005
摘要： 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.
摘要翻译： 公开了一种用于加入熔融铸铁的接种合金。 该组合物是含有5-8％钙作为活性成分的硅铁合金。
-
公开(公告)号：US4282032A
公开(公告)日：1981-08-04
申请号：US89749
申请日：1979-10-30
申请人： Yoshishige Nagoya , Kosuke Murai , Hirota Amano , Yoshisada Soga
发明人： Yoshishige Nagoya , Kosuke Murai , Hirota Amano , Yoshisada Soga
CPC分类号： C22C35/005
摘要： 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.
摘要翻译： 一种用于生产高品质，高纯度锰铁矿的直接方法，包括在反应容器中加入熔融的含Mn材料，非碳质还原剂和造渣材料的步骤，并使反应容器处于水平偏心圆 运动以混合和搅拌容器的内容物，由此含Mn熔融材料中所含的Mn氧化物被非碳质还原剂还原。
-
公开(公告)号：US4274871A
公开(公告)日：1981-06-23
申请号：US108844
申请日：1979-12-31
申请人： Michel Demange , Louis Septier
发明人： Michel Demange , Louis Septier
CPC分类号： C22C35/005
摘要： The invention concerns a method of obtaining manganese alloys with an average carbon content by reacting liquid, carbon-containing ferro-manganese in a fluid tight chamber. Oxygen, mixed with a heat regulating gas such as CO.sub.2, air, nitrogen, argon or steam, is introduced and by controlling the discharge of the gaseous effluent, the pressure in the reactor is adjusted between 1.5 and 15 bars, to avoid volatilization of the manganese and a refined ferro-manganese is produced containing 0.5-2% carbon.
摘要翻译： 本发明涉及通过使液体，含碳铁锰在流体密封室中反应来获得具有平均碳含量的锰合金的方法。 引入与CO 2，空气，氮气，氩气或蒸汽等热调节气体混合的氧气，并且通过控制气体流出物的排放，将反应器中的压力调节在1.5至15巴之间，以避免挥发 生产含有0.5-2％碳的锰和精炼铁锰。
-
-
-
-
-
-
-
-
-
搜索结果
135 条记录 (耗时 0.016 秒)
