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    • 2. 发明授权
    • Autogenous roasting of iron ore
    • 自动焙烧铁矿石
    • US5244494A
    • 1993-09-14
    • US851964
    • 1992-03-16
    • Patrick E. Cavanagh
    • Patrick E. Cavanagh
    • C01G49/06C22B1/04
    • C22B1/04
    • Iron ore concentrate is converted to magnetic gamma hematite in an autogenous roasting operation which is self-sustaining. The iron ore concentrate is preheated and contained magnetite is oxidized to hematite. Hematite is reduced to magnetite using carbon monoxide. After cooling, the magnetite is oxidatively exothermically converted to magnetic gamma hematite. The thermal energy resulting from the latter step is recycled to the preheating and reduction steps while thermal energy resulting from the cooling step also is recycled to those steps. The magnetic gamma hematite may be subjected to magnetic separation to produce a very low silica high purity iron oxide concentrate, which may be blended with high silica concentrate to provide a pellet feed for making blast furnace feed pellets.
    • 在自发焙烧操作中,铁精矿转化为磁性γ赤铁矿,这是自给自足的。 铁精矿被预热,含铁矿被氧化成赤铁矿。 使用一氧化碳将赤铁矿还原成磁铁矿。 冷却后,磁铁矿氧化放热转化为磁性γ赤铁矿。 由后一步产生的热能再循环到预热和还原步骤,而由冷却步骤产生的热能也被再循环到那些步骤。 可以对磁性γ赤铁矿进行磁选分离以产生非常低的二氧化硅高纯度氧化铁浓缩物,其可与高二氧化硅浓缩物混合以提供用于制备高炉进料颗粒的颗粒进料。
    • 4. 发明授权
    • Rabble cleaning device
    • RABBLE清洁装置
    • US3874644A
    • 1975-04-01
    • US44884274
    • 1974-03-07
    • AMAX INC
    • GRIMES DECREASED GEORGE R
    • C22B1/04B01F15/00F27B9/18F27B21/00
    • B01F15/00019F27B9/185
    • The combination of a rabble arm and a rabble arm cleaning device is provided comprising a rabble arm extending radially outward from a vertically disposed rotatable shaft for moving said rabble arm in a circular path. The rabble arm has blades (or rakes) which extend downwardly therefrom for contacting and raking particulate metalliferous material in a roasting hearth. The rabble arm cleaning device which is cooperably associated with said rabble arm comprises a hammer assembly pivotally mounted on said rabble arm, the pivotally mounted assembly having a weighted longitudinal member disposed below the pivot and extending longitudinally of said rabble arm in gravity contact with said blades, a cam-reacting member being disposed above said pivot with its free end extending above said rabble arm for making contact with a stationary cam disposed in the path of travel of said cam-reacting member, said cam-reacting member and said weighted member forming a coacting couple about said pivot.
    • 提供了一种摇摆臂和一种摇臂清洁装置的组合,其包括从垂直设置的可旋转轴径向向外延伸的摇摆臂,用于以圆形路径移动所述摇摆臂。 钻臂具有从其向下延伸的刀片(或耙子),用于在焙烧炉床中接触和碾碎颗粒状含金属材料。 与所述摇臂相配合的摇臂清洁装置包括枢转地安装在所述摇臂上的锤组件,所述枢转安装的组件具有加重的纵向构件,该纵向构件设置在枢轴下方并且与所述刀片重力接触地延伸在所述摇摆臂的纵向上 凸轮反作用构件,其设置在所述枢轴上方,其自由端在所述摇摆臂上方延伸,用于与设置在所述凸轮反作用构件的行进路径中的固定凸轮接触,所述凸轮反作用构件和所述加重构件成形 关于所述枢轴的共同的夫妇。
    • 8. 发明授权
    • Method for obtaining metals, their compounds, and alloys from mineral
raw materials
    • 从矿物原料中获得金属,其化合物和合金的方法
    • US5421857A
    • 1995-06-06
    • US209388
    • 1994-03-10
    • Vaecheslav M. MarteanenkoVitaly M. MaslovEmil A. ShtesselMichail A. Berenshteyn
    • Vaecheslav M. MarteanenkoVitaly M. MaslovEmil A. ShtesselMichail A. Berenshteyn
    • C22B1/02C22B1/04C22B5/04C22C38/14
    • C22B5/04C22B1/02
    • In this method for obtaining metals, their compounds, and alloys from mineral raw materials a burden is prepared by mixing a comminuted raw material with additions of chemical elements taken from the chemical composition of the starting raw material, oxidizing roasting is then carried out accompanied by evacuating and utilizing gaseous oxides, and a reduction process proceeds followed by separation of metals and their compounds. According to the invention, in the course of preparing the burden compounds of the above chemical elements containing oxygen are added to the mixture at a ratio of the compounds to the chemical elements ranging from 1:1 to 1:100 and at a total quantity of additions in the burden at least 5%. The oxidizing roasting process proceeds in an oxygen-containing atmosphere at a temperature from 1400.degree. to 1600.degree. C. followed by cooling and comminuting solid oxides obtained. Prior to metallothermy these oxides are mixed with a reducing metal being used at a ratio of the total of oxides of the metals obtained, alloys to the reducing metals ranging between 1:0.3 and 1:0.7. Reduction process proceeds at a temperature 2000.degree. to 2300.degree. C.
    • 在从金属原料获得金属及其化合物和合金的方法中,通过将粉碎的原料与起始原料的化学成分相加的化学成分混合而制备负荷,然后进行氧化焙烧,伴随着 抽空和利用气态氧化物,并进行还原过程,然后分离金属及其化合物。 根据本发明,在制备负荷的过程中,化合物与化学元素的比例为1:1至1:100,并且以总量 增加负担至少5%。 氧化焙烧过程在1400℃至1600℃的含氧气氛中进行,然后冷却并粉碎所获得的固体氧化物。 在金属加热之前,这些氧化物与所用金属的氧化物的总量与合金与还原金属的总量的比例在1:0.3至1:0.7之间与还原金属混合使用。 还原过程在2000°C至2300°C的温度下进行