现代锌处理技术的最新经验

自从1969年芬兰的科科拉(kokkola)锌厂投产以来,奥托昆普已在几个扩产阶段中开发并拓展了焙烧、浸出、净液和电积等锌厂工艺,开发出了取代黄钾铁矾工艺的奥托昆普转化浸出工艺、基于砷的奥托昆普净液工艺和奥托昆普精矿直接浸出工艺等新工艺。自收购了挪威锌公司奥达厂和德国Oberursel的鲁奇冶金公司后,奥托昆普在焙烧、烟气净化、制酸和电积方面扩展了其技术诀窍。鲁奇冶金公司于1962年在印度第一次投入锌焙烧炉开始了其锌方面的商业运作,其后共有70多台鲁奇锌焙烧妒在世界各地投产。由于这些成绩。奥托昆普现在可以将目前的锌处理技术融合在一整套技术内。

Recent experiences with modern zinc processing technology

Since the start up of the zinc plant at Kokkola in Finland in 1969 Outokumpu has developed the zinc plant processes and extended it by roasting, leaching, solution purification and electrolysis during several expansion stages. These development efforts have resulted in several in-house developed processes like the Outokumpu Conversion Process replacing the jarosite process, the arsenic-based Outokumpu Solution Purification Process and the Outokumpu Concentrate Direct Leaching Process. Outokumpu expanded its technological know-how by the processes of roasting, gas cleaning, sulfuric acid and electrolysis, when it purchased the Norzinc zinc operations at Odda in Norway and Lurgi Metallurgie at Oberursel In Germany. Lurgi Metallurgie started its zinc business with their first zinc roaster in India in 1962. Since then more than 70 Lurgi zinc roasters have been built worldwide. Thanks to these acquisitions Outokumpu can now combine all the zinc technologies available into one technology package.