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首页> 外文会议>41th Annual Conference of Metallurgists of CIM International Symposium on New Technology Implementation Metallurgical Processes Aug 11-14, 2002 Montreal, Quebec, Canada >Processing of slags and other man-made products containing non-ferrous metals in DC electric furnaces with bottom phase polarization (BPP)
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Processing of slags and other man-made products containing non-ferrous metals in DC electric furnaces with bottom phase polarization (BPP)

机译：在具有底相极化（BPP）的直流电炉中处理含非铁金属的炉渣和其他人造产品

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摘要

The problem of environmentally safe processing of technogenic (man-made) raw materials generated by the metallurgical industry, as well as sub-grade and refractory polymetallic ores, various intermediate by-products with a rather high contents of non-ferrous metals (slags, sludge, residues, Waelz slag, etc.) and secondary raw materials and wastes has an ever increasing importance. A unique design of a DC electric furnace with polarization of the metallized bottom phase (BPP furnace) and a process for treatment of man-made raw materials have been developed and provide a solution to the above problem. Treatment of converter slag generated at a copper smelter in a semi-commercial BPP furnace using DC power made it possible to completely eliminate the excessive bottom accretions, reduce the loss of copper, lead and zinc with final slag by a factor of 1.5, 1.8 and 2, respectively; the furnace productivity was improved twofold, as compared with a similar AC furnace. Appropriate process conditions have been developed for treatment of charges and slags in a BPP furnace ensuring a number of substantial advantages, including the following: 1. High recoveries of copper (at least 96%) and precious metals (98%) into matte; metallization of mattes ensures higher recoveries of precious metals; 2. Production of final slags with minimal residual contents of non-ferrous metals; zinc and lead report primarily into fumes, while sulfur is recovered in the matte. The environmental safety is ensured due to insignificant amounts of off-gas with low contents of toxic elements and throughout cleaning of discard slag of non-ferrous metals.
机译：冶金工业产生的技术性（人造）原材料以及路基和难熔多金属矿石，各种非铁金属含量较高的中间副产品（矿渣，污泥，残渣，Waelz炉渣等）以及辅助原料和废物的重要性日益提高。已经开发了具有金属化的底部相的极化的直流电炉（BPP炉）的独特设计和用于处理人造原料的方法，并且为上述问题提供了解决方案。使用直流电源处理在半商业BPP炉中的铜冶炼厂产生的转炉炉渣，可以完全消除过量的炉底积垢，将最终炉渣中的铜，铅和锌的损失降低1.5、1.8和1.5倍。 2，分别；与类似的AC炉相比，该炉的生产率提高了两倍。已经开发出适当的工艺条件来处理BPP炉中的炉料和炉渣，从而确保了许多实质性的优势，其中包括：1.高纯度的铜（至少96％）和贵金属（98％）转化为冰铜；雾面的金属化可确保更高的贵金属回收率； 2.生产有色金属残留量最少的最终炉渣；锌和铅主要汇入烟雾中，而硫则从冰沙中回收。由于少量的废气和少量的有毒元素，以及整个清理有色金属废渣，确保了环境安全。

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