铜渣综合利用研究现状及其新技术的提出

Copper slag comprehensive utilization development and new technology is put forward

铜渣是极有价值的冶金二次资源,特别是铜渣中铁、铜资源较为丰富,具备很高回收价值。本文论述了铜渣综合利用的研究现状,并提出了氯化分离铜渣中的铜铁的设想,以FeO∶Cu_2O∶CaCl_2=9g∶1g∶0.8g混合均匀配制试样;通高纯N_2以60ml/min保护焙烧,在1123K、1173K、1223K、1273K温度下做氯化焙烧实验。在1273K温度下经过4小时焙烧,FeO-Cu_2O体系中Cu元素的挥发率为60%以上,铜铁有效分离。为铜渣综合利用提供了新的技术研究思路。

Copper slag is regarded as invaluable metallurgical secondary resource and has very high collection value due to content of metallic elements,including high proportion of iron and copper.This paper discusses current situation of comprehensive utilization of copper slag and puts forward the supposition of separating copper and iron from copper slag by chlorination.The samples are prepared at the FeO∶Cu2O∶CaCl2 ratio 9∶1∶0.8（grams）by mixing evenly and the roasting reaction is conducted at various temperatures 1123K、1173K、1223Kand 1273 K,using nitrogen as protection gas of 60ml/min,after four hours＇ roasting at 1273 K,the volatilization of copper reaches over 60%in FeO-Cu2O system.Thus effective separation of copper and iron is obtained,and it provides a new train of thoughts for the comprehensive utilization of copper slag.