Scrap preheating system for an electric furnace
    3.
    发明授权
    Scrap preheating system for an electric furnace 失效
    电炉废料预热系统

    公开(公告)号:US4478574A

    公开(公告)日:1984-10-23

    申请号:US410890

    申请日:1982-08-24

    IPC分类号: C21C5/56 F27D13/00 F27D17/00

    摘要: This disclosure relates to a system for preheating scrap before charging in an electric furnace and for preventing the release of malodorous or noxious gas. The system includes a first duct leading from the furnace exhaust gas outlet to a chimney; a branching duct is connected in the first line for passing part of the gas to the chimney and for diverting the remainder of the gas to a scrap preheater. After preheating the scrap, the diverted gas is recirculated back to the first line at a junction which is adjacent the furnace outlet. The system further includes gas combustion means connected in the first line between the junction and the branching duct, and a heat equalizer-accumulator in the first line between the combustion means and the chimney. The system may further include a heat exchanger connected in the first line downstream of the branching duct and a second line for passing the diverted gas through the heat exchanger after it leaves the scrap preheater. A temperature responsive device may be connected in the first line for adjusting the amount of the diverted gas.

    摘要翻译: 本公开涉及一种用于在电炉中充电之前预热废料并用于防止恶臭或有害气体的释放的系统。 该系统包括从炉废气出口通向烟囱的第一管道; 分支管道连接在第一管线中,用于使气体的一部分通到烟囱,并将剩余的气体转移到废料预热器。 在预热废料之后,转移的气体在与炉出口相邻的连接处再循环回到第一管线。 该系统还包括连接在接头和分支管道之间的第一管线中的气体燃烧装置,以及在燃烧装置和烟囱之间的第一管线中的热均衡器 - 蓄能器。 该系统还可以包括连接在分支管道下游的第一管线中的热交换器和用于使转向的气体在离开废料预热器之后通过热交换器的第二管线。 温度响应装置可以连接在第一行中,用于调节转向气体的量。

    Process for treating bauxite or similar raw material
    4.
    发明授权
    Process for treating bauxite or similar raw material 失效
    处理铝土矿或类似原料的工艺

    公开(公告)号:US4265864A

    公开(公告)日:1981-05-05

    申请号:US11544

    申请日:1979-02-12

    IPC分类号: C01F7/04 C01F7/08

    CPC分类号: C01F7/04

    摘要: When an alkali such as an alkali metal bicarbonate or carbonate is intimately mixed with bauxite or other alumina-containing raw material at an Al.sub.2 O.sub.3 /Na.sub.2 O molar ratio of from 1/1 to 1/3 and the mixture is molded into granules, then calcined and extracted with an aqueous medium, the alumina component can be recovered in a high yield in the form of an aqueous solution of an alkali metal aluminate. The alkali component is not substantially contained in the residue left after recovery of this aqueous solution.

    摘要翻译: 当碱如碱金属碳酸氢盐或碳酸盐与Al2O3 / Na2O摩尔比为1/1至1/3的铝土矿或其它含氧化铝原料充分混合,并将混合物模制成颗粒时,然后煅烧和 用水介质萃取,氧化铝组分可以高碱度金属铝酸盐水溶液的形式回收。 在该水溶液回收后留下的残留物中碱性成分基本上不含有。

    Wireless equipment diagnosis system
    5.
    发明授权
    Wireless equipment diagnosis system 失效
    无线设备诊断系统

    公开(公告)号:US5745049A

    公开(公告)日:1998-04-28

    申请号:US680888

    申请日:1996-07-15

    IPC分类号: G06K7/00 G06K19/07 G01S13/75

    CPC分类号: G06K19/0723 G06K7/0008

    摘要: A wireless equipment diagnosis system which can perform inspection and maintenance precisely and accurately, and which comprises sensors which measure information on each equipment being diagnosed, a transponder which transmits measured data from the sensors after modulating the measured data; a portable interrogator which acquires the measured data by receiving transmitted signals from the transponder; and a host computer which diagnoses each equipment by implementing predetermined signal processing using information stored in advance and data transferred from the acquired data.

    摘要翻译: 一种无线设备诊断系统,其能够准确,准确地执行检查和维护,并且包括测量关于被诊断的每个设备的信息的传感器,在调制测量数据之后从传感器发送测量数据的应答器; 便携式询问器,其通过从应答器接收发送的信号来获取测量数据; 以及通过使用预先存储的信息和从所获取的数据传送的数据实现预定信号处理来诊断每个设备的主计算机。

    Method for treating frozen meat
    7.
    发明授权
    Method for treating frozen meat 失效
    冷冻肉的处理方法

    公开(公告)号:US5397593A

    公开(公告)日:1995-03-14

    申请号:US67614

    申请日:1993-05-27

    摘要: During conveying of frozen meat, the frozen meat is immersed in a first treating liquid, e.g. salt water, to thaw and wash the meat surface, and then the frozen meat is immersed in a second treating liquid, e.g. alkali, to provide a quality maintaining treatment.

    摘要翻译: 在输送冷冻肉时,将冷冻的肉浸入第一处理液中,例如, 盐水,以解冻和洗涤肉的表面,然后将冷冻的肉浸入第二处理液中,例如, 碱,提供质量保持治疗。

    System using electric furnace exhaust gas to preheat scrap for
steelmaking
    8.
    发明授权
    System using electric furnace exhaust gas to preheat scrap for steelmaking 失效
    系统采用电炉废气预热废钢,用于炼钢

    公开(公告)号:US4692113A

    公开(公告)日:1987-09-08

    申请号:US906120

    申请日:1986-09-10

    摘要: Dust containing high-temperature gas exhausted from an electric steelmaking furnace is directed through scrap preheaters, wherein scrap that is to be charged into said electric furnace is preheated. The absorption of some of the heat from the exhaust leaving the electric furnace by the scrap, therefore, decreases the amount of electric power required for melting the steel scrap and also shortens the time required for steelmaking. Exhaust gas after preheating of the scrap is contaminated with incidental malodorous materials, e.g., paint and oil fumes, and is directed through a gas scrubber followed by a wet-type electric precipitator to remove these contaminants before release of cleaned exhaust gas into the atmosphere. A flow of alkaline aqueous solution of a deodorant solvent in the gas scrubber removes malodorous substances from the exhaust gas, simultaneously causing a drop in the gas temperature to a predetermined controlled value while generating a constant supply of saturated water vapor. Exhaust gas mixed with the saturated water vapor then flows through a wet-type electrostatic precipitator which collects oil mist attached to the water vapor and any small water droplets entrained therein. This purging of dust and malodorous constituents from the exhaust gas facilitates preheating of scrap for electric steelmaking processes, providing benefits of improved economy and reduced environmental air pollution.

    摘要翻译: 含有从电炼钢炉排出的高温气体的粉尘被引导通过废料预热器,其中将要加入到所述电炉中的废料被预热。 因此,通过废料从排出电炉的排气中吸收一些热量,减少了熔炼钢渣所需的电力量,并缩短了炼钢所需的时间。 废料预热后的废气被偶然的恶臭物质(例如油漆和油烟雾)污染,并且被引导通过气体洗涤器,随后是湿式电除尘器以除去这些污染物,然后将净化的废气释放到大气中。 气体洗涤器中除臭溶剂的碱性水溶液流从废气中除去恶臭物质,同时使气体温度下降到预定的受控值,同时产生恒定的饱和水蒸气。 与饱和水蒸气混合的废气然后流过湿式静电除尘器,其收集附着在水蒸汽上的油雾和夹在其中的任何小水滴。 从排气中清除灰尘和恶臭成分有助于预热电炼炼工艺废料,提供经济改善和减少环境空气污染的好处。

    Hydraulic cement composition
    9.
    发明授权
    Hydraulic cement composition 失效
    水泥水泥组成

    公开(公告)号:US4452635A

    公开(公告)日:1984-06-05

    申请号:US470550

    申请日:1983-02-28

    CPC分类号: C04B28/26 C04B12/04

    摘要: Disclosed is a hydraulic cement composition comprising (A) a water-soluble alkali metal borosilicate or a combination of a water-soluble alkali metal silicate and an alkali metal borate soluble in an alkaline aqueous solution, (B) silicon polyphosphate, (C) an alkali metal silicofluoride and (D) substantially amorphous barium silicate in which the BaO/SiO.sub.2 molar ratio is in the range of from 1/2.5 to 1/6.

    摘要翻译: 公开了一种水硬性水泥组合物,其包含(A)水溶性碱金属硼硅酸盐或水溶性碱金属硅酸盐和可溶于碱性水溶液的碱金属硼酸盐的组合,(B)多磷酸硅,(C) 碱金属硅氟化物和(D)基本上无定形的硅酸钡,其中BaO / SiO 2摩尔比在1 / 2.5至1/6的范围内。

    Treating raw materials containing titanium components
    10.
    发明授权
    Treating raw materials containing titanium components 失效
    处理含钛成分的原料

    公开(公告)号:US4069295A

    公开(公告)日:1978-01-17

    申请号:US682058

    申请日:1976-04-30

    CPC分类号: C22B1/00

    摘要: A method of treating raw materials containing components of metals of the group IVb of the Periodic Table, which comprises heat-treating a raw material of a component of a metal of the group IVb of the Periodic Table containing coloring poisonous metal components such as Mn, V and Cr components in the presence of a flux composed mainly of an alkali metal nitrate or an alkali metal peroxide which is a thermal decomposition product of the alkali metal nitrate in an amount 2 to 5 times the amount of the raw material on the weight basis in a non-reducing atmosphere to thereby effect fluxing reaction, and subjecting the resulting fluxing reaction product to a leaching treatment of at least one stage in an aqueous medium to separate the fluxing reaction product into said coloring metal components and a concentrate of the component of the group IVb of the Periodic Table which is acid-soluble and substantially free of said coloring poisonous metal components. In practising this treating method, if a residue left after the above leaching step is incorporated into a mixture of the raw material and the flux, the composition is granulated and the granulated composition is heat-treated, the fluxing reaction of the raw material can be accomplished while keeping the granulated composition in the substantially non-sticky granular state throughout the fluxing heat treatment.

    摘要翻译: 一种处理包含元素周期表IVb族金属组分的原料的方法,该方法包括对含有着色有毒金属组分如Mn的周期表IVb族金属组分的原料进行热处理, V和Cr组分在主要由碱金属硝酸盐或碱金属过氧化物组成的助熔剂存在下,碱金属硝酸盐或碱金属过氧化物是碱金属硝酸盐的热分解产物,其量为原料重量的2至5倍 在非还原性气氛中进行助熔反应,并将得到的助熔反应产物在水性介质中进行至少一个阶段的浸出处理,将助熔反应产物分离成所述着色金属组分,并将组分的浓缩物 周期表的IVb组是酸溶性的并且基本上不含所述着色有毒金属组分。 在实施该处理方法时,如果将上述浸出工序后残留的残留物并入原料与助熔剂的混合物中,则将其组成进行造粒,对该粒状组合物进行热处理,可以使原料的助熔反应 在整个助熔热处理过程中将颗粒状组合物保持在基本上不粘的颗粒状态。