Origin and sedimentation of Cu-droplets sticking to spinel solids in pyrometallurgical slags

被引：33
作者：
De Wilde, E. [1 ]
Bellemans, I. [1 ]
Zheng, L. [2 ]
Campforts, M. [3 ]
Guo, M. [2 ]
Blanpain, B. [2 ]
Moelans, N. [2 ]
Verbeken, K. [1 ]
机构：
[1] Univ Ghent, Dept Mat Sci & Engn, Technol Pk 903, B-9052 Ghent, Belgium
[2] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44,Bus 2450, B-3001 Heverlee, Leuven, Belgium
[3] Umicore R&D, Kasteelstr 7, B-2250 Olen, Belgium
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2016年 / 32卷 / 18期
关键词：
Metal entrainment; Slag; Spinel; Copper production; COPPER LOSSES; CATION DIFFUSION; LIQUID; ENTRAINMENT; MATTE; DEGRADATION; MECHANISMS; PARTICLES; VISCOSITY; BEHAVIOR;
D O I：
10.1080/02670836.2016.1151998
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu-droplet losses in slags are an important problem in Cu-industry, limiting the metal recovery. An important cause responsible for the entrainment of copper droplet losses in slags is their sticking behaviour to spinel solids. In the present study, the interaction between spinel solids and Cu-droplets is investigated in an industrially relevant slag system (PbO-CaO-SiO2-Cu2O-Al2O3FeO-ZnO) using two complementary experimental set-ups. Firstly the influence of the sedimentation time is studied and secondly the presence of entrained (sticking) droplets is studied as a function of height in the slag layer. Based on the experimental results, a mechanism that explains the sticking Cu-droplets is proposed. Finally, a model describing the sedimentation of sticking and non-sticking droplets is formulated based on the experimental data.
引用
收藏
页码：1911 / 1924
页数：14
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