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    • 8. 发明授权
    • Device for the improvement of crude pellets and pelletizing process
    • 改善粗丸和造粒工艺的装置
    • US09580769B2
    • 2017-02-28
    • US14520062
    • 2014-10-21
    • VALE S.A.
    • José Antonino Alves e Silva ReisReinaldo Walmir De JesusAldo Gamberini JúniorLeonidio Stegmiller
    • C22B1/216B01F9/02F27B7/00F27B7/20F27B7/42C22B1/24
    • C22B1/2406B01F9/02C22B1/216C22B1/2413F27B7/00F27B7/20F27B7/42
    • A pelletizing process, having two distinct serial stages. In the first stage, crude (or green) pellets of a given ore, or a mixture of ores (such as iron ore, manganese ore and other minerals), are produced, while in the second stage, a Device for Improvement of Crude Pellets, is used. The Device includes a slightly elastic and smooth surface, with reduced attrition rate, that may be striated, and that, encircled in itself, forms a cylindrical geometric hollow figure supported by a metallic structure, also cylindrical, with the set forming a finishing drum. The Device rotates with an inner and continuous charge of ore pellets, and can rearrange the structure of such pellets, improving their physical quality: compressive strength, sphericity and surface finishing, and assimilate fines generated during previous processes. This device allows application of diverse materials to the pellets to add required extra properties per specificities of subsequent industrial processes.
    • 造粒过程,具有两个不同的串联阶段。 在第一阶段,生产给定矿石或矿石(如铁矿石,锰矿石和其他矿物)的混合物的原油(或绿色)颗粒,而在第二阶段,生产用于改善原油颗粒的装置 , 用来。 该装置包括稍微弹性和光滑的表面,具有降低的磨损率,其可以是条纹的,并且其自身包围形成由金属结构(也是圆柱形)支撑的圆柱形几何空心图,其中该组形成精整滚筒。 装置以矿石颗粒的内部和连续装料旋转,并且可以重新排列这种颗粒的结构,提高它们的物理质量:抗压强度,球形度和表面光洁度,并且吸收先前工艺中产生的细粉。 该装置允许将各种材料应用于颗粒,以便随后的工业过程的特定性增加所需的额外特性。