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1. 发明申请

WO2012080558A1 PROCESS AND PLANT FOR TREATING ORE CONCENTRATE PARTICLES CONTAINING VALUABLE METAL 审中-公开
标题翻译：用于处理含有有价值金属的浓缩颗粒的方法和设备
公开(公告)号：WO2012080558A1
公开(公告)日：2012-06-21
申请号：PCT/FI2010/051022
申请日：2010-12-14
申请人： OUTOTEC OYJ , HOLMSTRÖM, Åke , LUNDHOLM, Karin , BERG, Gunnar , GÜNTNER, Jochen
发明人： HOLMSTRÖM, Åke , LUNDHOLM, Karin , BERG, Gunnar , GÜNTNER, Jochen
IPC分类号： C22B1/02 , C22B11/02
CPC分类号： C22B1/02 , B01D53/52 , B01D53/64 , B01D53/76 , B01D2251/11 , B01D2258/025 , C22B1/10 , C22B5/08 , C22B5/12 , C22B11/00 , C22B11/02 , C22B15/0013 , F27B15/00 , F27B15/09 , F27B15/12
摘要： The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step (1) made in a first roasting reactor (16) and a second roasting step (3) made in a second roasting reactor (17). A gas mixture is formed from the first process gas component (2) obtained from the first roasting step(1)and from the second process gas component (4) obtained from the second roasting step (3). Post combustion of the gas mixture is made in a post combustion chamber (6). The post combustion operates with said reducing and sulphide rich first process gas component (2) and the second process gas component (4) as oxidizer gas in order to decompose SO 3 in the gas mixture to reduce the SO 3 content. The risk of accretion formation and corrosion in the post combustion chamber and in subsequent steps is reduced. Finally the exit gas (7) is exposed to subsequent gas cooling and dust removal steps (8 to 11).
摘要翻译：本发明涉及用于处理含有价值金属并且至少含有砷和硫的组分的矿石精矿颗粒的方法和设备。该方法包括两阶段焙烧过程，其包括在第一焙烧反应器（16）中制成的第一焙烧步骤（1）和在第二焙烧反应器（17）中制备的第二焙烧步骤（3）。由从第一焙烧工序（1）得到的第一工艺气体成分（2）和由第二焙烧工序（3）得到的第二工艺气体成分（4）形成气体混合物。在后燃烧室（6）中进行气体混合物的后燃烧。后燃烧与所述还原和富硫化物的第一工艺气体组分（2）和第二工艺气体组分（4）一起作为氧化剂气体进行操作，以分解气体混合物中的SO 3以降低SO 3含量。在后燃烧室中和后续步骤中的沉积物形成和腐蚀的风险降低。最后，排出气体（7）暴露于随后的气体冷却和除尘步骤（8至11）。

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