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21 条记录 (耗时 0.01 秒)

    Sintering process
    11.
    发明授权
    Sintering process 失效
    烧结工艺

    公开(公告)号：US3849115A

    公开(公告)日：1974-11-19

    申请号：US23766072

    申请日：1972-03-24

    申请人： MCDOWELL WELLMAN ENG CO

    发明人： BAN T

    IPC分类号： C22B1/20 ,  C21B1/10 ,  C22B1/16

    CPC分类号： C22B1/20 ,  Y02P10/216

    摘要： The present invention provides an improved process for sintering particles composed of iron oxide, e.g., iron ore, combustible carbonaceous material, and water with a flux such as limestone optionally present and combining the principles of recyclng gases exiting from the burden adjacent the feed end back through the burden in a region toward the delivery end of a traveling grate as well as taking gases exiting from the burden adjacent the delivery end and passing them again through the burden near the feed end. Recycling of gases in this manner achieves desirable results such as reduction of the volume of gases handled, conditioning of the gases for removal of entrained particulate material by dust removing apparatus, and removal of entrained or volatilized organic as well as inorganic pollutants from the exhaust gas stream before discharge to the atmosphere. The process combines the advantages of both ''''hot'''' recycle and ''''cold'''' recycle.

    摘要翻译： 本发明提供了一种改进的方法，用于将由氧化铁（例如铁矿石，可燃碳质材料）和水组成的颗粒烧结，所述矿物质可以是任选地存在的诸如石灰石之类的助熔剂，并且将从邻近进料端返回的负载再循环的原理结合在一起 通过一个区域中的负担，朝向运送格栅的输送端，以及从邻近输送端的负载排出的气体，并再次通过进料端附近的负荷。 以这种方式回收气体获得期望的结果，例如减少处理的气体的体积，通过除尘设备去除夹带的颗粒材料的气体的调理，以及从排气中去除夹带的或挥发的有机物以及无机污染物 在排放到大气之前。 该方法结合了“热”回收和“冷”回收的优点。

    Highly fluxed iron oxide pellet
    12.
    发明授权
    Highly fluxed iron oxide pellet 失效
    高通量氧化铁颗粒

    公开(公告)号：US3754889A

    公开(公告)日：1973-08-28

    申请号：US3754889D

    申请日：1970-10-14

    申请人： BETHLEHEM STEEL CORP

    发明人： DOMINGUEZ E ,  HITZROT H ,  LYNN J

    IPC分类号： C22B1/24 ,  C21B1/08 ,  C21B1/10 ,  C21B1/28

    CPC分类号： C22B1/2406

    摘要： A highly fluxed iron oxide pellet containing about 50 percent to about 95 percent iron oxide, about 20 percent calcium oxide plus magnesium oxide, not more than 10 percent silica, not more than 2 percent alumina, the remainder incidental impurities. The ratio of the calcium oxide plus magnesium oxide to the silica plus alumina in the pellet may be from about 0.5:1 to about 4.5:1. The ratio of calcium oxide to magnesium oxide on a weight basis in the pellet is from about 90 to 10 percent to about 80 to 20 percent, respectively. The pellet of the invention is produced by forming a mix of about 60 to 95 percent iron ore concentrate, about 40 to about 5 percent flux, a binder and moisture. The mix is balled in an apparatus, for example a balling disc. The green balls are dried at a temperature not higher than 500* F. The dried green balls are fired within a temperature range of 2150* F. to 2350* F. to form pellets. The pellets are cooled to room temperature.

    Process for making polygon coke in coking chambers and coke so produced
    13.
    发明授权
    Process for making polygon coke in coking chambers and coke so produced 失效
    在生产焦化釜和焦糖中制造聚碳酸酯的方法

    公开(公告)号：US3725038A

    公开(公告)日：1973-04-03

    申请号：US3725038D

    申请日：1971-01-18

    申请人： WENZEL W ,  SCHENCK H ,  GUDENAU H

    发明人： WENZEL W ,  SCHENCK H ,  GUDENAU H

    IPC分类号： C10B57/08 ,  C10B53/08 ,  C21B1/10 ,  B01J2/12 ,  C22B1/14

    CPC分类号： C10B53/08 ,  Y10T428/2991

    摘要： A process for producing coke in polygonal shape in indirectly heated coke oven chambers which comprises applying to shaped pieces of fine-grained, including pelletized or briquetted, coal, an intimate mixture of coal and iron ore, both of fine grainsize, thereby forming a shell on said pieces before subjecting them to the coking operation. Preferably, the grain size of the coal and the iron ore are below 1 mm, the ratio of coal to iron ore in the shell 33% by weight: 67 percent by weight. The invention also comprises the polygonal coke made by the process.

    摘要翻译： 一种在间接加热的焦炉室中制造多边形焦炭的方法，其特征在于，应用于细粒状的成型片，包括粒状或压块的煤，煤和铁矿石的紧密混合物，均匀细小，由此形成 在对它们进行焦化操作之前的所述件上的壳。 优选地，煤和铁矿石的粒度小于1mm，壳中的煤与铁矿的比例为33重量％：67重量％。 本发明还包括由该方法制成的多边形焦炭。

    Method for producing prereduced iron ore pellets
    14.
    发明授权
    Method for producing prereduced iron ore pellets 失效
    生产预制铁矿石颗粒的方法

    公开(公告)号：US3574595A

    公开(公告)日：1971-04-13

    申请号：US3574595D

    申请日：1969-01-06

    申请人： US INTERIOR

    发明人： FINE MORRIS M ,  SCHLUTER ROBERT B

    IPC分类号： C21B13/00 ,  C21B13/08 ,  C21B13/14 ,  C21B1/10

    CPC分类号： C21B13/146 ,  C21B13/008 ,  C21B13/08

    摘要： GREEN PELLETS COMPOSED OF (1) FINELY GROUND IRON ORE OR CONCENTRATE AND (2) A BINDER SUCH AS BENTONITE CLAY ARE HEATED TO A TEMPERATURE OF ABOUT 1740*F.-2100*F., PREFERABLY 1830*F., UNDER STRONGLY REDUCING CONDITIONS, IN THE PRESENCE OF A REDUCTANT AND SULFUR, SO THAT THE PELLETS ARE PARTIALLY REDUCED AND SULFURIZED TO THE EXTENT THAT THEY CONTAIN AT LEAST BOUT 0.08 WEIGHT PERCENT SULFUR. SUBSTANTIAL SINTERING OF METALLIC IRON IN THE PELLETS THEREBY OCCURS. SUBSEQUENTLY, THESE HOT PREREDUCED PELLETS CAN BE DESULFURIZED WITH CACO3.

    Cover for the ignition carriage in a sintering plant
    15.
    发明授权
    Cover for the ignition carriage in a sintering plant 失效
    在烧结设备中的点火支架盖

    公开(公告)号：US4065111A

    公开(公告)日：1977-12-27

    申请号：US678859

    申请日：1976-04-21

    申请人： Eero Kyto

    发明人： Eero Kyto

    IPC分类号： F27B21/00 ,  F27B21/06 ,  C21B1/10

    CPC分类号： F27B21/00 ,  F27B21/06

    摘要： A cover for the ignition frame of a sintering apparatus is disclosed wherein the cover includes an enclosed space through which combustion air for the substantially horizontally disposed burners of the sintering apparatus is conducted. Combustion air delivered from a blower flows via a pipe to a central portion of the cover and into the enclosed space where it is preheated and cools the cover and thence flows to insulated pipes connected with the burners. In an alternate embodiment, two enclosed spaces are formed in the cover arranged in the direction of travel of a conveyor belt carrying the product to be sintered. The space arranged in the downstream direction of travel of the belt is provided with burners and the upstream space is provided with combustion air pipes.

    摘要翻译： 公开了一种用于烧结设备的点火框架的盖子，其中盖子包括封闭空间，通过该封闭空间进行用于烧结设备基本上水平设置的燃烧器的燃烧空气。 从鼓风机输送的燃烧空气通过管道流到盖的中心部分并进入被封闭的空间，在那里它被预热并冷却盖子，从而流到与燃烧器相连的绝缘管道。 在替代实施例中，两个封闭空间形成在沿着承载待烧结产品的传送带的行进方向布置的盖中。 在带的下游行进方向上布置的空间设置有燃烧器，并且上游空间设置有燃烧空气管。

    Method of producing strong fired compacts from iron or iron oxide containing material
    17.
    发明授权
    Method of producing strong fired compacts from iron or iron oxide containing material 失效
    从含铁或含氧化铁的材料生产强力混合物的方法

    公开(公告)号：US3567811A

    公开(公告)日：1971-03-02

    申请号：US3567811D

    申请日：1969-10-20

    申请人： CLYDE W HUMPHREY

    发明人： HUMPHREY CLYDE W

    IPC分类号： C22B1/242 ,  C21B1/08 ,  C21B1/10 ,  C21B1/30

    CPC分类号： C22B1/242

    摘要： IRON OR IRON OXIDE FINES SUCH AS BOF DUST, IRON ORE, AND MILL SCALE ARE FORMED INTO STRONG CERAMIC BONDED COMPACTS SUITABLE AS RAW MATERIAL FEED FOR STEEL MAKING OPERATIONS, E.G. BLAST FURNACE FEED. A NOVEL COMBINATION OF ADDITIVES, AMMONIUM HYDROXIDE, A MINERAL ACID SUCH AS HYDROCHLORIC ACID, A CARBOHYDRATE BINDER SUCH AS MOLASSES, AND WATER, PROVIDE THE NECESSARY LOW TEMPERATURE

    STRENGTH UNTIL A CERAMIC BOND IS ESTABLISHED. THE COMPACTS ARE FORMED FROM THE COHESIVE MASS, PREFERABLY BY EXTRUSION, DRIED AND FIRED IN A CONVENTIONAL MANNER.