Sessile drop evaluation of high temperature copper/spinel and slag/spinel interactions

作     者：E.de WILDE I.BELLEMANS M.CAMPFORTS M.GUO B.BLANPAIN N.MOELANS K.VERBEKEN EdeWILDE;IBELLEMANS;MCAMPFORTS;MGUO;BBLANPAIN;NMOELANS;KVERBEKEN

作者机构：Department of Materials Science and EngineeringGhent UniversityTechnologiepark 903B-9052 Zwijnaarde(Ghent)Belgium Umicore R&DKasteelstraat 7B-2250 OlenBelgium Department of Materials EngineeringKU LeuvenKasteelpark Arenberg 44bus 2450B-3001 Heverlee(Leuven)Belgium 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2016年第26卷第10期

页      面：2770-2783页

核心收录：

学科分类：080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：science and technology in Flanders(IWT project 110541) 

主　　题：sessile drop copper spinel slag 

摘      要：Metal droplets sticking to spinel solids, present in metallurgical slag systems, play an important role in hindering the sedimentation of copper in slags. To understand this phenomenon, the interaction between spinel particles with Cu on one handand with slag, on the other hand,wasevaluated. A dedicated approach was applied, using an industrially relevant synthetic slag system PbO-FeO-SiO2-CaO-Al2O3-Cu2O-ZnO, pure copper and MgAl2O4substrates to represent the industrial slag, the entrained copper droplets and the spinel solids, respectively. Both the copper-MgAl2O4and the slag-MgAl2O4interaction were studied using sessile drop measurements, combined with an extensive microstructural analysis. Additionally, the effectoftimeon the slag-MgAl2O4 interaction was studied using immersion experiments. Copper displayed a non-wetting behaviour on MgAl2O4, whereas slag displayed a reactive wetting and an interaction layer of （Mg,Fe,Zn）（Al,Fe）2O4spinelwas formed at the interface, which was also observed in the immersion experiments. Moreover, the diffusion of MgO and Al2O3from the spinel substrate into the slag droplets was noted.