Abstract：A series of fundamental studies were conducted under laboratory condition to utilize copper slag from Yunnan province (called CSY hereinafter) reasonably, and in order to produce iron nuggets, the ITmk3 process was applied. The mass ratio of iron nuggets to total iron in orecoal composite pellet (simplified as OCCP hereinafter) was recorded as iron yield, and the metallization ratio of OCCP after reduction and the carbon content in iron nuggets after meltingseparation were gained via the chemical analysis. Finally, reasonable technology route of reduction and meltingseparation for CSY was drawn up on the basis of the study on the effect of the each factor on the indexes above. It can be concluded that the slag melting was necessary for iron nuggets formation, and the coalescence extent of iron depended on its carburization content. The existence of constituent SiO2 was a critical cause for low melting point of CSY, and the melting interval of OCCP was affected by the change of basicity, which had little effect on its melting start temperature. When the alkalinity was over 0.4, adding CaO can significantly improve the performance of Yunnan copper slag reduction.
何鹏，张俊，严定鎏. 云铜铜渣还原熔分试验分析[J]. 中国冶金, 2017, 27(2): 33-36.
HE Peng,ZHANG Jun,YAN Dingliu. Experimental analysis of reduction and meltingseparation for copper slag from Yunnan province. China Metallurgy, 2017, 27(2): 33-36.
2017, Vol. 27 
