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    • 2. 发明申请
    • METHOD FOR REPROCESSING METALLURGICAL DUST OR GRINDING DUST, AND APPARATUS FOR CARRYING OUT SAID METHOD
    • 用于重新处理金属粉末或污泥的方法和用于实施该方法的设备
    • WO2007068025A3
    • 2007-08-09
    • PCT/AT2006000524
    • 2006-12-18
    • EDLINGER ALFRED
    • EDLINGER ALFRED
    • C21B3/04C22B7/02C22B9/00C22B19/30
    • C21B3/04C22B5/10C22B7/02C22B7/04C22B9/003C22B19/30Y02P10/212Y02P10/253Y02W30/542
    • Disclosed is a method for reprocessing metallurgical dust or grinding dust, especially converter dust and arc furnace dust obtained from steel or high-grade steel production. In said method, the dust is burned and slagged with oxygen in oxidizing conditions in a melt burner (1), and the obtained slag is introduced into an inductively heated reduction furnace (17) containing a coke bed (49). Carbon monoxide formed during the reduction of the slag is withdrawn at the top of the reduction furnace (17) as gas along with Zn vapor, whereupon Zn is condensed or the gas is reformed with water or steam so as to form ZnO and hydrogen and is redirected into the melt burner (1) after separating the ZnO. The inventive apparatus for carrying out the disclosed method is characterized in that a dosing cone (3) is provided which comprises a burner lance (4) and a feeding device for the charge and which extends into a diffuser (44) via a feeding zone having a reduced cross-section and via an annular slot (41) that surrounds the burner lance (4). Furthermore, the combustion chamber (1) adjoins the diffuser (44) while an inductively heated coke column is connected to a bottom discharge port of the combustion chamber as a reduction furnace whose top end is equipped with at least one connection (56) for feeding coke as well as an exhaust gas connection (50) for withdrawing carbon monoxide and Zn vapor.
    • 在再加工冶金灰尘或研磨粉尘,特别是转换器和由钢或不锈钢生产电弧炉粉尘,其中在熔融燃烧器(1)的粉剂燃烧与渣化氧化条件下氧气的方法,所形成的炉渣是在感应 导入焦炭床(49)的加热还原炉(17)。 在炉渣中形成的一氧化碳的还原是在还原炉(17)的气体的顶部用Zn蒸气一起抽出,于是锌缩合或与水或水蒸汽的气体,以形成氧化锌和氢的重整和氧化锌的沉积(熔化燃烧器后 1)返回。 用于执行该方法的装置,其特征在于一个Dosierkonus(3)与燃烧器喷管(4)和一个进给装置被设置用于电荷,其通过燃烧器喷管(4)的环形槽与周围的横截面减小任务区域(41 )过渡到扩散器(44),燃烧室(1)到所述扩散器(44)连接,并且在燃烧室中的感应加热的焦炭塔被连接作为还原炉,至少一个连接的头部侧的端部的底部排出开口(56) 用于排出焦炭和用于排出一氧化碳和Zn蒸气的排气口(50)。