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| Study on Melting Temperature and Viscosity of PbO-FeO-CaO-SiO2-ZnO System |
| Received:December 09, 2020 Revised:December 14, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.05.003 |
| KeyWord:oxygen-enriched bath smelting of lead; high lead-bearing slag; melting temperature; viscosity |
| Author | Institution |
| HUANG Hao |
北京科技大学 钢铁冶金新技术国家重点实验室 |
| ZHANG Jia-liang |
北京科技大学 钢铁冶金新技术国家重点实验室;北京科技大学 冶金与生态工程学院 |
| CHEN Yong-qiang |
北京科技大学 钢铁冶金新技术国家重点实验室;北京科技大学 冶金与生态工程学院 |
| WANG Cheng-yan |
北京科技大学 钢铁冶金新技术国家重点实验室;北京科技大学 冶金与生态工程学院;江西理工大学 材料冶金化学学部 |
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| Abstract: |
| Melting temperature and viscosity of slag with high lead content play important role for up-flow and high yield in oxygen-enriched melting bath of lead. Taking PbO-FeO-CaO-SiO2-ZnO system as research object, melting temperature and viscosity of slag were measured by ash melting point measuring instrument and inner cylinder rotary high temperature viscosimeter respectively. Influence of Fe/SiO2 mass ratio (0.9-1.3), CaO/SiO2 mass ratio (0.4-0.8) and ZnO content (5%-11%) on melting temperature and viscosity of slag was investigated. The results show that melting temperature and viscosity of slag drop with increase of Fe/SiO2 ratio, and the appropriate Fe/SiO2 ratio is 1-1.1. Melting temperature of slag rises with increase of CaO content, while viscosity drops with increase of CaO content, and the appropriate CaO/SiO2 ratio is 0.6. Melting temperature and viscosity of slag rise with increase of ZnO content, and ZnO content should be kept to be below 7% in the operating temperature of oxygen-enriched melting process. |
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