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    EXPANDABLE SILICA PARTICLES AND METHODS FOR MAKING AND USING THE SAME
    1.
    发明申请
    EXPANDABLE SILICA PARTICLES AND METHODS FOR MAKING AND USING THE SAME 有权

    公开(公告)号：US20230023633A1

    公开(公告)日：2023-01-26

    申请号：US17896412

    申请日：2022-08-26

    申请人： VALUNOR AG

    发明人： Finn Erik SOLVANG ,  Norman Blank

    IPC分类号： C03C11/00 ,  F27B3/06 ,  C03B19/10

    摘要： The present disclosure concerns expandable silica particles having a coating comprising talc powder and kaolin powder provided on the outer surface of the expandable silica particle and expandable and expanded silica particles comprising silica fume and/or ultrafine quartz silica sand beneath the surface of the particles. Methods for producing expandable and expanded silica particles are disclosed, including a method using a vibration plate and a furnace having a vibration plate for carrying out that method. The expanded silica particles have high compressive strength, substantially uniform cell size and distribution, low water absorption, and low porosity on the outer surface. They are useful as a filler in matrix materials, like concrete or epoxy, as insulation material with various binder materials, and as water filtration medium.

    Tilting converter
    2.
    发明授权
    Tilting converter 有权
    倾斜转换器

    公开(公告)号：US09562273B2

    公开(公告)日：2017-02-07

    申请号：US14155121

    申请日：2014-01-14

    申请人： Danieli & C. Officine Meccaniche S.P.A.

    发明人： Alfredo Poloni

    IPC分类号： C21C5/50 ,  C21C5/46 ,  F27B3/06 ,  F27B7/20 ,  F27B14/02

    CPC分类号： C21C5/50 ,  C21C5/4633 ,  F27B3/065 ,  F27B7/2083 ,  F27B14/02

    摘要： A tilting converter comprising a container (2), defining a first longitudinal axis X, having a bottom (2′); a support ring (3), coaxial to the container (2) and distanced from said container, provided with two diametrically opposite supporting pins (6), defining a second axis Y orthogonal to the first axis X, adapted to allow a rotation of the converter about said second axis Y; a suspension system, connecting said container (2) to said support ring (3), comprising groups (12) of first suspension devices (7), said groups (12) being arranged substantially equidistant to each other along a cylindrical side surface coaxial to the first axis X, in a position between the support ring (3) and the bottom (2′); each of said first suspension devices (7) being provided with a plurality of longitudinal elastic elements, each longitudinal elastic element being arranged alongside the next so as to define a laying plane, and a gap (15, 15′) is provided between one longitudinal elastic element and the next.

    摘要翻译： 一种倾斜转换器，包括限定具有底部（2'）的第一纵向轴线X的容器（2）; 与所述容器（2）同轴并与所述容器隔开的支撑环（3），设置有两个直径相对的支撑销（6），所述支撑环限定与所述第一轴线X正交的第二轴线Y， 转换器绕所述第二轴线Y; 将所述容器（2）连接到所述支撑环（3）的悬挂系统，包括第一悬挂装置（7）的组（12），所述组（12）沿着与所述支撑环（3）同轴的圆柱形侧表面彼此基本等距 第一轴线X处于支撑环（3）和底部（2'）之间的位置; 每个所述第一悬挂装置（7）设置有多个纵向弹性元件，每个纵向弹性元件沿着下一个旁边布置以限定铺设平面，并且在一个纵向弹性元件之间设置间隙（15,15'）， 弹性元素和下一个。

    METHOD OF OPERATING ELECTRIC ARC FURNACE
    4.
    发明申请
    METHOD OF OPERATING ELECTRIC ARC FURNACE 审中-公开
    操作电弧炉的方法

    公开(公告)号：US20160123664A1

    公开(公告)日：2016-05-05

    申请号：US14930775

    申请日：2015-11-03

    申请人： DAIDO STEEL CO., LTD.

    发明人： Noriyuki TOMITA ,  Yoshikazu TANAKA ,  Akihiro NAGATANI ,  Masato OGAWA ,  Kunio MATSUO

    IPC分类号： F27B3/08 ,  F27D11/10 ,  F27B3/06 ,  F27D3/15

    CPC分类号： F27B3/085 ,  F27B3/06 ,  F27B3/205 ,  F27D3/1518 ,  F27D11/10

    摘要： The present invention relates to a method of operating an electric arc furnace containing (a) a furnace shell having a tapping hole and/or a slag door, (b) a furnace roof having a plurality of electrodes provided so as to face downwards, and (c) a rotating apparatus that rotates the furnace shell around a vertical axis relative to the electrodes, the method contains a rotating step of rotating the furnace shell relative to the electrodes during melting of a metal material, and a holding step of stopping the rotation when any one of the plurality of electrodes reaches a holding position that is previously set close to the tapping hole or the slag door, and holding the furnace shell at the holding position.

    摘要翻译： 本发明涉及一种操作电弧炉的方法，该电弧炉包括（a）具有出钢孔和/或炉渣门的炉壳，（b）具有多个设置成朝下的电极的炉顶，以及 （c）使炉壳相对于电极围绕垂直轴旋转的旋转装置，该方法包括在金属材料熔化期间使炉壳相对于电极旋转的旋转步骤，以及停止旋转的保持步骤 当多个电极中的任何一个达到预先设置在接近漏斗孔或炉渣门的保持位置，并将炉壳保持在保持位置时。

    System and method for steel making
    5.
    发明授权
    System and method for steel making 有权
    制钢系统及方法

    公开(公告)号：US06890479B2

    公开(公告)日：2005-05-10

    申请号：US10238971

    申请日：2002-09-11

    申请人： Richard J. Manasek ,  David P. Kincheloe

    发明人： Richard J. Manasek ,  David P. Kincheloe

    IPC分类号： F27B3/06 ,  F27D1/12 ,  F27D9/00 ,  F27D17/00 ,  C21B7/16

    CPC分类号： F27D1/12 ,  F27B3/065 ,  F27D9/00 ,  F27D17/003 ,  F27D2009/0013 ,  F27D2009/0016 ,  F27D2009/0021

    摘要： A metallurgical furnace, which includes a furnace shell, an exhaust system, and a gas cleaning system, further includes a plurality of improved pipes and fume ducts throughout to increase operational life and productivity. The pipes and fumes ducts are comprised of an aluminum-bronze alloy which provides enhanced properties over prior art materials including thermal conductivity, modulous of elasticity and hardness. The use of the alloy also minimizes maintenance requirements of the pipes and fume ducts, thereby extending their operational life. In operation, gases formed from smelting or refining are evacuated from the furnace shell through the exhaust system into the gas cleaning system. The gases, as well as the system, are water cooled by way of the plurality of pipes displaced throughout.

    摘要翻译： 包括炉壳，排气系统和气体清洁系统的冶金炉还包括多个改进的管道和通风管，以增加操作寿命和生产率。 管道和烟气管道由铝 - 青铜合金组成，与现有技术材料相比，其具有导热性，弹性和硬度变化的特性。 使用合金还可以最大限度地减少管道和烟道的维护需求，从而延长其使用寿命。 在操作中，通过冶炼或精炼形成的气体通过排气系统从炉壳排出到气体清洁系统中。 气体以及系统通过整个排列的多个管道进行水冷却。

    Arc furnace fume collection method
    7.
    发明授权
    Arc furnace fume collection method 有权
    电弧炉烟气采集方法

    公开(公告)号：US6136068A

    公开(公告)日：2000-10-24

    申请号：US255156

    申请日：1999-02-22

    申请人： Craig L. Peters

    发明人： Craig L. Peters

    IPC分类号： F27B3/06 ,  F27B3/08 ,  F27B3/28 ,  F27D7/04 ,  F27D17/00 ,  B01D29/66

    CPC分类号： F27D17/003 ,  F27B3/085 ,  F27B3/28 ,  F27B3/065 ,  F27D17/008 ,  F27D2007/045

    摘要： The present invention provides a system and method for collecting fumes from an arc furnace of the type typically used in metal foundries. The system provides an electrode hood with extended sides for improved collection of fumes from the vicinity of the electrodes. It also provides a movable spout hood for collection of fumes when metal is tapped. A combination of a tilting manifold and stationary duct are used to maintain a path for collecting fumes throughout the entire range of motion of the furnace. The stationary duct has a group of dampers that open and close as the furnace tilts. Variable position dampers may be provided at the electrode hood and furnace door. In the bag house, there is a dust containment assembly to limit the movement of the collected dust. A variable speed fan may be used with the system. One method of the invention involves determining the pressure differential upstream and downstream of the filter bag, determining the fan speed, and closing a damper downstream of the filter to clean the filter bag when the determined values for the pressure differential and fan speed match previously set values. The entire system may be controlled by a programmable logic element to maximize efficiency. Another method involves the steps of adjusting the electrode hood damper, spout hood damper and door hood damper in response to furnace conditions.

    摘要翻译： 本发明提供一种用于从通常用于金属铸造厂的电弧炉中收集烟雾的系统和方法。 该系统提供具有延伸侧面的电极罩，用于改善从电极附近收集的烟雾。 它还提供一个可移动的喷口，用于在金属被攻丝时收集烟雾。 倾斜歧管和固定管道的组合被用于在炉的运动的整个运动范围内保持用于收集烟雾的路径。 固定管道具有一组在炉子倾斜时打开和关闭的阻尼器。 可以在电极罩和炉门设置可变位置阻尼器。 在袋子的房子里，有一个集尘装置来限制收集的灰尘的运动。 系统可以使用变速风扇。 本发明的一种方法包括确定过滤袋上游和下游的压力差，确定风扇速度，以及当过滤器的压力差和风扇速度的确定值匹配先前设定时，关闭过滤器下游的阻尼器以清洁过滤袋 价值观。 整个系统可以由可编程逻辑元件控制以最大化效率。 另一种方法包括响应于炉条件调整电极罩阻尼器，喷嘴罩阻尼器和门罩阻尼器的步骤。

    Meltdown apparatus
    9.
    发明授权
    Meltdown apparatus 失效
    熔化装置

    公开(公告)号：US5738823A

    公开(公告)日：1998-04-14

    申请号：US681477

    申请日：1996-07-23

    申请人： Goran Grimfjard ,  Erik Alfred Lassander ,  Gerhard Lempa ,  Sven-Einar Stenkvist

    发明人： Goran Grimfjard ,  Erik Alfred Lassander ,  Gerhard Lempa ,  Sven-Einar Stenkvist

    IPC分类号： C21C5/42 ,  C21C5/52 ,  C21C7/00 ,  F27B3/06 ,  F27B3/08 ,  F27B3/10 ,  F27B3/12 ,  F27B3/22 ,  F27D3/15 ,  F27D11/08 ,  F27D27/00 ,  F27D17/00 ,  C22B7/00

    CPC分类号： F27D27/00 ,  C21C5/42 ,  C21C5/5229 ,  F27B3/12 ,  F27D3/1545 ,  C21C2007/0093 ,  C21C5/305 ,  F27B3/085 ,  F27B3/225 ,  Y02P10/216

    摘要： To improve operation, particularly to allow more universal use, in which both liquid and solid crude metal, especially iron can be refined in only one reactor vessel, a reactor vessel (1) is of converter-like design with a relatively large space above a melt (7) and with slag (8) lying above said melt. For the removal of slag (8) via a closable slag channel (18'), the meltdown apparatus can be rotated about a center of rotation (20) through .+-.8.degree.. For the complete removal of the melt (7) via a closable melt channel (17') in the bottom region of the meltdown apparatus, the latter can be rotated about a center of rotation (19) through .+-.30.sup.. A magnetic coil (16) fed with direct current and arranged around the meltdown apparatus (1) serves for the magnetic damping of movements of melt (7) and/or slag (8) inside the meltdown apparatus. In the converter mode, a graphite electrode (5) used in the arc mode is replaced by a gas supply conduit, through which oxygen is then supplied under pressure.

    摘要翻译： 为了改进操作，特别是允许更普遍的使用，其中液体和固体粗金属，特别是铁只能在仅一个反应器容器中精制，反应器容器（1）是转炉式设计，具有相对较大的空间 熔体（7）和位于所述熔体上方的炉渣（8）。 为了通过可关闭的炉渣通道（18'）去除炉渣（8），熔化设备可绕旋转中心（20）至+/- 8°旋转。 为了通过熔断装置的底部区域中的可封闭的熔体通道（17'）完全去除熔体（7），后者可绕旋转中心（19）至+/- 30旋转。 供给直流电并布置在熔化装置（1）周围的电磁线圈（16）用于对熔化装置内的熔体（7）和/或炉渣（8）的运动进行磁阻尼。 在转换器模式中，在电弧模式中使用的石墨电极（5）由供气管道代替，然后在压力下供给氧气。

    Method and apparatus for desulphurizing iron with minimal slag formation
    10.
    发明授权
    Method and apparatus for desulphurizing iron with minimal slag formation 失效
    铁渣脱硫最少的方法和设备

    公开(公告)号：US5466275A

    公开(公告)日：1995-11-14

    申请号：US295733

    申请日：1994-08-29

    申请人： Anton More

    发明人： Anton More

    IPC分类号： C21C1/02 ,  C21C7/064 ,  F27B3/06 ,  F27B3/08 ,  F27B3/14 ,  F27B3/19 ,  F27B3/22 ,  F27D1/00

    CPC分类号： C21C1/02 ,  C21C7/064

    摘要： The invention relates to a method and apparatus for desulphurizing iron with minimal slag formation, comprising the steps of melting and heating, to a temperature of about 1400.degree. to 1800.degree. C., a slag having the following chemical composition:20% max SIO.sub.2 ;30% max/Al.sub.2 O.sub.3 ;about 5-40% SiO.sub.2 +Al.sub.2 O.sub.3 +TiO.sub.2 combined;2% max FeO;1.5% max MnO;about 25-65% CaO+MgO+BaO+Na.sub.2 O+K.sub.2 O;20% max MgO;10% max Na.sub.2 O+K.sub.2 O;60% max CaF.sub.2 ;about 50-85% CaO+MgO+BaO+Na.sub.2 O+K.sub.2 O+CaF.sub.2 ;percentages by weight; where the ratio of the percentage by weight of CaO plus MgO divided by the percentage by weight of SiO.sub.2 plus one-half Al.sub.2 O.sub.3 is at least two and where the ratio of the percentage by weight of Na.sub.2 O plus K.sub.2 O to SiO.sub.2 is no more than one; then mixing the sulphur-containing hot metal with this bath of molten slag so as not to exceed 10 parts molten iron per part slag by weight. The desulphurized molten iron is then drawn from beneath the slag bath. The process may be accomplished using a low shaft furnace according to the present invention comprising a furnace body lined with carbon bricks or carbonaceous, basic or high-alumina refractory bricks and having a discharge pipe extending down to the bottom of the furnace chamber for discharging the desulphurized molten iron from beneath the slag bath.

    摘要翻译： PCT No.PCT / DE93 / 00165 Sec。 371日期：1994年8月29日 102（e）日期1994年8月29日PCT提交1993年2月25日PCT公布。 公开号WO93 / 17131 日本1993年9月2日。本发明涉及一种使炉渣形成最少的铁脱硫方法和装置，其特征在于包括以下步骤：熔化和加热到约1400℃至1800℃的温度， 组成：20％最大SIO2; 30％max / Al2O3; 约5-40％的SiO2 + Al2O3 + TiO2组合; 2％最大FeO; 1.5％MnO; 约25-65％CaO + MgO + BaO + Na2O + K2O; 20％最大MgO; 10％最大Na2O + K2O; 60％最大CaF2; 约50-85％CaO + MgO + BaO + Na2O + K2O + CaF2; 重量百分比; 其中CaO与MgO的重量比除以SiO 2加上一半Al 2 O 3的重量百分比至少为2，Na 2 O + K 2 O与SiO 2的重量比不大于1; 然后将该含硫铁水与该熔渣熔池混合，以使其不超过10份铁水每份重量的熔渣。 然后从渣槽下方抽出脱硫的铁水。 该方法可以使用根据本发明的低竖炉来实现，该低炉具有包括碳砖或碳质，碱性或高铝耐火砖的炉体，并且具有向下延伸到炉室底部的排放管，用于排放 从渣槽下方脱硫的铁水。