FUNDAMENTAL EXPERIMENT ON REFINING OF LOW GRAD COPPER SCRAP.

低品位废铜精炼基础实验。

基本信息

批准号：
08650860
负责人：
TAKEDA Yoichi
金额：
$ 1.34万
依托单位：
IWATE UNIVERSlTY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

In order to refine a high copper grade scrap by oxidation, I have carried out melting experiments in which slag and copper metal containing impurities are oxidizing by blowing air, and the expcrimental results are as follows :(1) Iron, zinc, cobalt and nickel of which oxides have higher melting temperatures than copper are removable as their solid oxides without any flux.(2) There are the best oxygen potential to remove zinc, iron, cobalt and tin which have big affinities with oxygen. When we make over-oxidation, these impurities become a stable in molten copper due to the interaction between them and oxygen, that is high content in copper, and removability of the impurity are reduced.(3) It is possible to remove some amount of nickel and bismuth whose affinities with oxygen are close to that of copper, but it is not enough to eliminate these impurities clearly.I have made fundamental experiment to carry out a phase separation for copper recovery from iron scrap containing copper. A mixture of iron, copper and carbon are melted in a carbon crucible at 1453K.The top layr which is rich in iron and the bottom layr which is rich in copper are clearly separated in the crucible. The alloy compositions on the miscibility gap in the Fe-Cu-C system are 91.1% Fe-4.7% Cu-4.2% C and 96.7% Cu-3.3% Fe. Sixty percent of copper recovery from 10% Cu containing scrap, 80% of the recovery from 20% Cu scrap and 90% of the recovery from 30% Cu scrap were achieved by employing the phase separation on copper enrichment from scrap.

为了通过氧化来完善高铜等级的刮擦，我进行了融化实验，其中含有杂质的矿渣和铜金属通过吹空气而氧化，而实现的效果如下：（1）铁，锌，钴和镍的氧化物具有更高的氧化物，而没有任何铜的氧化物，而没有较高的氧化物，而没有较高的氧化物（2），则是最优惠的牛群（2）（2）（2）（2）（2）（2）（2）（2）（2）（2）（2）（2）（2）（2）（2 2）（2 2）铁，钴和锡具有很大的氧气。当我们产生过氧化时，由于它们与氧气之间的相互作用，这些杂质在熔融铜中变得稳定，这是铜的含量高，并且杂质的去除性降低。（3）可以消除与氧气相关的镍和生物的一定阶段，但要消除了足够的含量，但它与铜的相关性不足以消除铜的含量。从含铜的铁废料中回收铜。铁，铜和碳的混合物在1453k的碳坩埚中融化。顶部的浓汤，富含铁，底部的layr富含铜，在坩埚中清楚地分离出来。 Fe-Cu-C系统中混溶差距上的合金组成为91.1％Fe-4.7％CU-4.2％C和96.7％CU-3.3％Fe。从含有废料的10％CU中回收的60％，从20％Cu废料中回收的80％和从30％CU废料中回收的90％是通过在碎屑中使用铜富集来实现的。