(1.中南工业大学冶化研究所， 长沙 410083;2.白银有色金属公司冶炼厂， 白银 730900)
摘 要: 采用光学显微镜和扫描电镜， 研究了空气熔炼和富氧熔炼条件下炼铜炉渣试样的显微结构。 在低倍的条件下测定了渣中含铜物相的粒级分布及其与周围物相种类的关系，用元素面扫描的方法逐一鉴定了渣中各物相的形态与组成 ； 用微区分析的方法确定了不同粒径含铜物相化学成分的差异，发现含铜物相的粒径越大， 其含铜越高。 分析中注意到不同氧化程度的渣中磁铁矿相结晶形态和数量的不同，氧化越甚， 磁铁矿晶体发育越完全， 渣含铜就越高。
关键字: 铜熔炼 炉渣 显微结构 渣含铜
（1.Institute of Metallurgical Physicochemistry and New Chemical Materials,Central South University of Technology, Changsha 410083, P. R. China;
2.Smelting Plant, Baiyin Nonferrous Metals Company, Baiyin 730900, P. R. China）
Abstract:The microstructures of slag samples from the matte smelting with air and oxygen-enriched air were studied by using optical microscope and scanning electron microscope. The distribution of particle-size of copper-bearing phase and the effect of surrounding phase species on the distribution were examined. By the method of element mapping the appearance and the composition of each species in the slag were determined. The differences of chemical composition among the copper-bearing phases with different particle sizes were also determined through micro-area analysis scanning. It was discovered that the larger particle size of the copper-bearing phase, the higher content of copper in it. The morphology and amount of magnetite crystals in slag under different degree of oxidizati on were highlighted in that the magnetite crystals grow more completely and the amount of copper in slag is larger with stronger oxidations.
Key words: copper smelting slag microstructure loss of copper in slag
