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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 >New process to obtain electrolytic copper from copper matte or white metal
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New process to obtain electrolytic copper from copper matte or white metal

机译：从哑铜或白色金属中获得电解铜的新工艺

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A new alternative to the conventional processing of copper matte or white metal has been developed which consists of the granulation of the molten matte or white metal produced in a conventional smelting furnace followed by the grinding of the granulated solid to a particle size 100% - 35 mesh. The grinded material is fed into a fluidized bed roaster which operates at 800℃ using air. The dead-roast calcine generated in the roaster is further cooled, and the off gases from the roaster are cleaned in conventional forms. To process the calcines, two different alternatives have been developed: a pyro-hydro process and a pyro process to obtain in both cases as the final product copper cathodes. In the first alternative, the hot calcines discharging from the roaster are continuously leached in a system of agitated tanks in series with spent electrolyte from the electrowinning cells. The pulp is thickened and filtered and the filtrate is fed into conventional electrowinning cells where the copper is recovered as HG copper cathodes. The solid cake, which consists of cupric ferrite, silica and the precious metals, is fed back into the smelting furnace to recover the copper. In the second process, the dead calcine from the roasting of matte or white metal is reduced with coke to generate crude copper, which can be fire refined and then electrorefined to obtain HG copper cathodes in conventional form. The precious metals are recovered from the electrolytic slimes.
机译：已开发出一种替代铜哑光或白色金属的常规工艺的新方法，该方法包括将常规冶炼炉中生产的熔融哑光或白色金属制粒，然后将造粒的固体研磨至粒径为100％-35啮合。研磨后的物料被送入流化床焙烧炉，该焙烧炉使用空气在800℃下运行。焙烧炉中产生的烘烤焙烧炉被进一步冷却，并且焙烧炉中的废气以常规形式被净化。为了加工煅烧炉，已经开发出两种不同的替代方案：热解法和热解法，在两种情况下均作为最终产品获得阴极铜。在第一种选择中，将从焙烧炉中排出的热煅烧物与来自电沉积电池的废电解液串联在一个搅拌槽系统中连续浸出。纸浆被增稠并过滤，滤液被送入传统的电解沉积池，在那里铜被回收为HG铜阴极。由铁酸铜，二氧化硅和贵金属组成的固体饼被送回到熔炼炉中以回收铜。在第二种方法中，用焦炭还原来自烘烤哑光或白色金属的死煅烧炉，生成粗铜，可以对其进行火精制，然后进行电精制以获得常规形式的HG铜阴极。从电解泥中回收贵金属。

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