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    Method of manufacturing ferrosilicon
    52.
    发明授权
    Method of manufacturing ferrosilicon 失效
    制造硅铁的方法

    公开(公告)号：US4526612A

    公开(公告)日：1985-07-02

    申请号：US526412

    申请日：1983-08-25

    Applicant: Sune Eriksson ,  Sven Santen

    Inventor： Sune Eriksson ,  Sven Santen

    IPC: C22C33/04 ,  C22B4/00 ,  C22B4/06 ,  C22C33/00

    CPC classification number: C22B4/005 ,  C22C33/003

    Abstract: Ferrosilicon is manufactured from a material containing silica and a raw material containing iron by injecting these materials, possibly together with a reducing agent, with the help of a carrier gas into a plasma gas. The silica and the iron raw material, possibly with the reducing agent, heated in this way are then introduced with the energy-rich plasma gas into a reaction chamber surrounded by a solid reducing agent in lump form, the silica thus being brought to the molten state, being reduced and reacting with the iron to form ferrosilicon.

    Abstract translation: 硅铁由含有二氧化硅和含铁原料的材料制成，通过将这些材料与还原剂一起，借助于载气将其注入等离子体气体中。 然后将以这种方式加热的二氧化硅和铁原料（可能用还原剂）以能量富集的等离子体气体引入由块状形式的固体还原剂包围的反应室中，由此将二氧化硅引入熔融 状态，与铁还原并与铁反应形成硅铁。

    Process for bonding refractory to surfaces
    55.
    发明授权
    Process for bonding refractory to surfaces 失效
    将耐火材料粘合到表面上的工艺

    公开(公告)号：US4504440A

    公开(公告)日：1985-03-12

    申请号：US535130

    申请日：1983-09-23

    Applicant: Cord H. Sump

    Inventor： Cord H. Sump

    IPC: D04H1/42 ,  B23K1/00 ,  B23K1/19 ,  D04H1/58 ,  F27D1/00 ,  F27D1/16 ,  F27D5/00 ,  F28F19/02 ,  C22C33/00

    CPC classification number: F28F19/02 ,  F27D1/16 ,  F27D5/00 ,  F27D1/0006 ,  F27M2003/05 ,  F27M2003/17

    Abstract: A process for forming a mat (14) of metal fibers (2) which can be used to hold ceramic material onto the surface of equipment to be protected from heat and corrosion, including the steps of mixing a plurality of metal fibers (2) with polybutene (8) and a finely-divided brazing material (10). This mixture is spread onto a support member (4) having an insulating coating (6) thereon to prevent the fibers from becoming brazed to the support member. The support member containing the fibers thereon is then subjected to a brazing temperature (12), brazing the fibers together to form a loose mat. The mat is then removed from the support member, and reduced (16) in thickness into a more dense mat of fibers. The dense mat (14) is then again subjected to a brazing temperature (18), to form a final product having unusual strength qualities. The dense mat (14), after brazing (18), is formed with dies (19) to a desired shape such as a coating on tubing and either rebrazed to bond to the tubing surface (20) or attached by welding such as stud welding.

    Abstract translation: 一种用于形成金属纤维（2）的垫（14）的方法，其可用于将陶瓷材料保持在待保护的设备的表面上免受热和腐蚀，包括以下步骤：将多个金属纤维（2）与 聚丁烯（8）和细碎的钎料（10）。 将该混合物铺展在其上具有绝缘涂层（6）的支撑构件（4）上，以防止纤维被钎焊到支撑构件上。 然后将含有其上的纤维的支撑构件经受钎焊温度（12），将纤维钎焊在一起以形成松散垫。 然后将垫子从支撑构件上移除，并且将厚度减小（16）成为更致密的纤维垫。 然后将致密垫（14）再次经受钎焊温度（18），以形成具有异常强度品质的最终产品。 在钎焊（18）之后，致密垫（14）由模具（19）形成为期望的形状，例如管道上的涂层，并且被重新结合以与管道表面（20）结合或通过诸如螺柱焊接 。

    Method for the production of ferrochromium
    56.
    发明授权
    Method for the production of ferrochromium 失效
    生产铬铁的方法

    公开(公告)号：US4412862A

    公开(公告)日：1983-11-01

    申请号：US399974

    申请日：1982-07-20

    Applicant: Tsuneo Miyashita ,  Tsutomu Fukushima ,  Kiyoshi Kawasaki ,  Sadayuki Sasaki

    Inventor： Tsuneo Miyashita ,  Tsutomu Fukushima ,  Kiyoshi Kawasaki ,  Sadayuki Sasaki

    IPC: C22C1/00 ,  C22C1/02 ,  C22C33/00 ,  C22C33/04

    CPC classification number: C22C33/003

    Abstract: Described is a method for the production of ferrochromium and a rotary furnace employed in such method. Raw chromium ores, fluxes and carbonaceous reducing agent(s) are charged into a rotary furnace into which oxygen or oxygen-enriched air is blown to effect smelting reduction. Hot exhaust gases from the rotary reducing furnace are used for pre-heating and pre-reducing of the materials for saving the energy considerably as contrasted to conventional methods.

    Abstract translation: 描述了用于生产这种方法中使用的铬铁和旋转炉的方法。 将原料铬矿石，助熔剂和碳质还原剂加入到吹入氧气或富氧空气的旋转炉中以进行熔炼还原。 与传统方法相比，来自旋转还原炉的热废气用于预热和预还原材料以节省能量。

    Corrosion-resistant Fe-Cr-uranium.sup.238 pellet and method for making the same
    58.
    发明授权
    Corrosion-resistant Fe-Cr-uranium.sup.238 pellet and method for making the same 失效
    耐腐蚀Fe-Cr-铀238颗粒及其制备方法

    公开(公告)号：US4383853A

    公开(公告)日：1983-05-17

    申请号：US235574

    申请日：1981-02-18

    Applicant: Carl A. Zapffe

    Inventor： Carl A. Zapffe

    IPC: C22C33/02 ,  C22C43/00 ,  F42B7/04 ,  C22C1/04 ,  C22C33/00 ,  F42B11/14

    CPC classification number: C22C33/0278 ,  C22C43/00 ,  F42B7/046

    Abstract: High density, generally microscopically homogeneous corrosion-resistant chromium-uranium metal alloys for ammunition use (particularly for spherical pellets or shot) can be made from U.sup.238 or an isotopic mixture high in U.sup.238 (such as "depleted uranium") and at least about 10 atomic % chromium. The alloys can also contain one or more metals of Group VIII, first triad, of the Periodic Table, and a variety of other elements used, for example, in making ferrous metals. Major factors to be considered in formulating the alloy are density, melting point or melting range, passivity or chemical or biological inertness, resistance to segregation in the molten phase and upon rapid cooling (chromium-poor phases or regions being particularly undesirable), and compensation for any loss of free chromium due to formation of intermetallic or other forms of combined chromium. The uranium content in the alloy is preferably less than 70 atomic %. Rapid cooling of the chromium-uranium or chromium-uranium-Group VIII metal melt, e.g. by the shot tower technique, avoids undesirable segregation effects which can detract from corrosion resistance. The shot tower may optionally contain a non-oxidizing atmosphere.

    Abstract translation: 用于弹药使用的高密度，通常是显微均质的耐腐蚀铬 - 铀金属合金（特别是用于球形丸粒或丸粒）可由U238或U238高度同位素混合物（如“贫化铀”）和至少约10 原子％铬。 合金还可以含有元素周期表第VIII族，第一三元组中的一种或多种金属，以及例如用于制备黑色金属的各种其它元素。 在配制合金时要考虑的主要因素是密度，熔点或熔融范围，被动性或化学或生物惰性，熔融相中的偏析和快速冷却时的抗偏析性（铬不良相或区域是特别不希望的） 由于形成金属间化合物或其他形式的组合铬而导致的任何游离铬损失。 合金中的铀含量优选小于70原子％。 铬 - 铀或铀 - Ⅷ族金属熔体的快速冷却。 通过喷射塔技术，可以避免不利的偏析效应，从而降低耐腐蚀性。 喷射塔可以任选地含有非氧化气氛。

    Production of high purity and high surface area magnesium oxide
    60.
    发明授权
    Production of high purity and high surface area magnesium oxide 失效
    生产高纯度高表面积的氧化镁

    公开(公告)号：US4298379A

    公开(公告)日：1981-11-03

    申请号：US117224

    申请日：1980-01-31

    Applicant: Adolfo R. Zambrano

    Inventor： Adolfo R. Zambrano

    IPC: C01B17/50 ,  C01F5/12 ,  C22B26/22 ,  C22B23/00 ,  C22C33/00 ,  C25C3/04

    CPC classification number: C01F5/12 ,  C22B23/043 ,  C22B26/22 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/80 ,  Y02P10/234

    Abstract: Disclosed is a process for refining a magnesium and nickel containing ore, comprising the steps of grinding the ore; preparing a slurry of the ground ore in sulfuric acid containing less than ten percent of water; adding water to the acid-ore slurry in an amount which is effective to initiate a sulfation reaction; allowing the sulfation reaction to continue, utilizing the heat of the sulfation reaction to heat the acid-ore slurry, whereby water-soluble metal sulfates and insoluble residue are formed; leaching the sulfation product with water to extract the water-soluble metal sulfates in solution; separating the metal sulfates solution from the insoluble residue; precipitating from the solution metals other than Mg as hydroxides; separating the solution from the metal hydroxide precipitate; concentrating the solution sufficiently to precipitate CaSO.sub.4 ; separating the concentrated solution from the precipitate; recovering dehydrated MgSO.sub.4 crystals from the concentrated solution; and decomposing the dehydrated MgSO.sub.4 crystals to form MgO of controlled surface area. Additionally disclosed are an autoclave step for reducing iron values in the metal sulfates solution, nickel or ferronickel recovery steps, a sulfuric-acid recycle; refractory MgO production steps, and Mg metal recovery steps.

    Abstract translation: 公开了一种用于精炼含镁和镍的矿石的方法，包括以下步骤：研磨矿石; 在含有少于10％的水的硫酸中制备研磨矿石的浆料; 以有效引发硫酸化反应的量向酸 - 矿浆中加入水; 允许硫酸化反应继续，利用硫酸化反应的热量加热酸 - 矿浆，由此形成水溶性金属硫酸盐和不溶性残留物; 用水浸出硫酸化产物以提取溶液中的水溶性金属硫酸盐; 将金属硫酸盐溶液与不溶性残渣分离; 从氢氧化物除Mg以外的金属溶液中析出; 将溶液与金属氢氧化物沉淀物分离; 浓缩该溶液以沉淀CaSO 4; 将浓缩溶液与沉淀物分离; 从浓缩溶液回收脱水的MgSO4晶体; 并分解脱水的MgSO 4结晶形成受控表面积的MgO。 另外公开了一种用于还原金属硫酸盐溶液，镍或镍铁回收步骤中的铁值的高压釜步骤，硫酸循环; 耐火MgO生产步骤和Mg金属回收步骤。

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