Magnesia clinker and method of producing the same
    62.
    发明授权
    Magnesia clinker and method of producing the same 失效
    氧化镁熟料及其生产方法

    公开(公告)号:US4721691A

    公开(公告)日:1988-01-26

    申请号:US658820

    申请日:1984-10-09

    申请人: Fusao Kawano

    发明人: Fusao Kawano

    摘要: The present invention disclosed a magnesia clinker excellent in corrosion resistance, which is useful for a magnesia carbon refractory and also for a refractory for steel manufacturing furnace, and the magnesia clinker is characterized by:(a) having a purity of MgO of 97 wt. % or higher;(b) containing 2.0 wt. % or less of CaO;(c) containing 0.01 wt. % or more of B.sub.2 O.sub.3 ;(d) containing 0.3 wt. % or less of SiO.sub.2 ;(e) containing impurities other than MgO, CaO, B.sub.2 O.sub.3 and SiO.sub.2 of 2 wt. % or less;(f) having a bulk density of 3.35 (g/cc) or higher and an apparent porosity of 3.0 (vol. %) or less; and(g) having a mean crystal size of magnesia of 100 .mu.m or larger.

    摘要翻译: 本发明公开了耐腐蚀性优异的氧化镁熟料,其可用于氧化镁碳耐火材料和用于钢铁制造炉的耐火材料,氧化镁熟料的特征在于:(a)MgO的纯度为97重量% % 或更高; (b)含有2.0wt。 %以下的CaO; (c)含有0.01重量% %以上的B2O3; (d)含有0.3wt。 %以下的SiO2; (e)除了MgO,CaO,B 2 O 3和SiO 2以外的杂质为2重量% % 或更少; (f)体积密度为3.35(g / cc)以上,表观孔隙率为3.0(体积%)以下; 和(g)具有100μm或更大的氧化镁的平均晶体尺寸。

    Process for the production of sintered magnesite from magnesium hydroxide
    63.
    发明授权
    Process for the production of sintered magnesite from magnesium hydroxide 失效
    从氢氧化镁生产烧结菱镁矿的方法

    公开(公告)号:US4497761A

    公开(公告)日:1985-02-05

    申请号:US261733

    申请日:1981-05-07

    申请人: Hans-Gerd Schulte

    发明人: Hans-Gerd Schulte

    CPC分类号: C01F5/08 F27B7/2033

    摘要: The invention relates to a process for the production of sintered magnesite from magnesium hydroxide in which filter cake is size reduced in a stream of hot air to a certain particle size, after which the material is heated and calcined and the dehydrated powder thus obtained is hot briquetted and introduced hot into the sintering zone. This process is distinguished by its high economy on heat and by the production of a readily sinterable dehydrated powder.

    摘要翻译: 本发明涉及一种从氢氧化镁生产烧结菱镁矿的方法,其中将滤饼在热空气流中的尺寸减小至一定的粒度,之后将材料加热和煅烧,并将得到的脱水粉末热 压块并引入热入烧结区。 该方法的特征在于其经济性高,并且易于烧结的脱水粉末的生产。

    Densification of caustic magnesia and sintered periclase by acid doping
    64.
    发明授权
    Densification of caustic magnesia and sintered periclase by acid doping 失效
    通过酸性掺杂对苛性氧化镁和烧结的边缘酶进行致密化

    公开(公告)号:US4423026A

    公开(公告)日:1983-12-27

    申请号:US142659

    申请日:1980-04-22

    IPC分类号: C04B35/04 C01F5/08 C04B35/043

    CPC分类号: C01F5/08 C04B35/043

    摘要: A method for improving the density and other properties of caustic magnesia and sintered periclase. To improve the density of sintered periclase, acid or acid salt is admixed with magnesium hydroxide, followed by caustic-firing, pressing and high-firing. If desired, the admixture is dried before caustic-firing. Alternatively, the step of caustic-firing may be omitted. To improve the density and compactability of caustic magnesia, acid or acid salt is admixed with magnesium hydroxide, followed by caustic-firing. If desired, the admixture is dried before caustic-firing. Preferably, acetic acid is used.

    摘要翻译: 一种提高苛性氧化镁和烧结的面筋的密度等性能的方法。 为了提高烧结的片状物的密度,将酸或酸盐与氢氧化镁混合,然后进行苛性烧制,压制和高烧制。 如果需要,将混合物在苛性烧制之前干燥。 或者,可以省略苛性烧制的步骤。 为了提高苛性氧化镁的密度和可压实性,将酸或酸盐与氢氧化镁混合,然后苛性烧制。 如果需要,将混合物在苛性烧制之前干燥。 优选使用乙酸。

    Pretreatment of brine for boron removal
    66.
    发明授权
    Pretreatment of brine for boron removal 失效
    盐水预处理除硼

    公开(公告)号:US4035469A

    公开(公告)日:1977-07-12

    申请号:US638143

    申请日:1975-12-05

    IPC分类号: C01F5/08 C01F5/30

    CPC分类号: C01F5/30 C01F5/08

    摘要: A process for removing boron contaminant from magnesium halide-containing brine wherein the brine is contacted with active magnesia to precipitate boron-containing magnesium hydrate and to remove at least 50%, and up to at least 95%, by weight of the total boron content of the untreated brine, without reduction of the magnesium halide content of said brine. The active magnesia is employed in an amount of from about 0.1% to about 10% by weight, preferably from about 2% to about 6% by weight, of the untreated brine, which may be heated e.g., from about 140.degree. F to the boiling point thereof, prior to contact with said active magnesia. Subsequently, the treated brine can be used, by reacting it with dolime, to form magnesium hydroxide which, in turn, can be calcined to produce MgO, each of which is a high-purity-low-boron product, i.e., less than 150 ppm boron on an oxide basis, and preferably less than 75 ppm. In addition, the MgO will contain less than 1.5% CaO and can contain, under proper processing conditions, less than 0.8% CaO impurity.

    摘要翻译: 一种从含卤化镁的盐水中除去硼污染物的方法,其中盐水与活性氧化镁接触以沉淀含硼水合镁并除去总硼含量的至少50%,最多至少95% 的未处理的盐水,而不降低所述盐水的卤化镁含量。 活性氧化镁的使用量为未处理的盐水的约0.1%至约10%重量,优选约2%至约6%重量,其可以例如从约140°F加热至 在与所述活性氧化镁接触之前的沸点。 随后,经处理的盐水可以通过使其与泡沫反应而形成氢氧化镁,这又可以被煅烧生成MgO,其中每一种都是高纯度低硼产物,即小于150 ppm,以氧化物计,优选小于75ppm。 此外,MgO将含有小于1.5%的CaO,并且在适当的加工条件下可含有少于0.8%的CaO杂质。

    High density magnesia pellet and method for making same
    68.
    发明授权
    High density magnesia pellet and method for making same 失效
    高密度氧化镁颗粒及其制备方法

    公开(公告)号:US3965240A

    公开(公告)日:1976-06-22

    申请号:US424176

    申请日:1973-12-12

    申请人: Vaughn V. Hughey

    发明人: Vaughn V. Hughey

    摘要: Caustic magnesia and magnesium hydroxide slurry are mixed together with sufficient energy in a counter-current high energy mixer to form pellets of various sizes during hydration of the caustic magnesia. The pellets may be used as formed or may be calcined to caustic magnesia or deadburned in a kiln to refractory periclase.

    摘要翻译: 苛性氧化镁和氢氧化镁浆料在逆流高能量混合器中以足够的能量混合在一起,以形成苛性氧化镁水合期间各种尺寸的颗粒。 颗粒可以被形成或者可以被煅烧成苛性氧化镁,或者在窑中被烧成耐火材料。

    Fixing device for a component of a system
    69.
    发明授权
    Fixing device for a component of a system 失效
    系统组件的固定装置

    公开(公告)号:US3832040A

    公开(公告)日:1974-08-27

    申请号:US34132873

    申请日:1973-03-15

    申请人: MATRA ENGINS

    发明人: CIABRINI J

    摘要: The device comprises a plurality of thin elastic strips distributed at equal angular intervals on a circle centered on the axis of the component. The large surface of the strips is positioned in the plane tangential to the circle parallel to the axis of the component, each of said strips having a tightly securing connection to the support (or the component) and a universal connection to the component (or the support). The device is particularly useful for fixing a component of an optical system in a satellite.

    摘要翻译: 该装置包括多个薄的弹性条,其以等间隔的角度分布在以部件轴线为中心的圆上。 条的大表面位于与平行于部件的轴线的圆切线的平面中,每个所述条具有与支撑件(或部件)的紧密固定连接以及与部件的通用连接(或 支持)。 该装置对于将卫星中的光学系统的部件固定是特别有用的。