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| Effect of CaO/SiO2 and MgO content on melting characteristics and viscosity of nickel slag |
| Received:May 05, 2018 Revised:June 10, 2018 |
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| DOI： |
| KeyWord:Nickel slag; CaO-SiO2-FeO-MgO slag system; FactSage thermodynamic software; Melting characteristics; Viscosity |
| Author | Institution |
| HUANG Zi-niu |
兰州理工大学材料科学与工程学院 |
| SHENG Ying-ying |
兰州理工大学材料科学与工程学院 |
| ZHANG Yan-yun |
兰州理工大学材料科学与工程学院 |
| CHONG Jun-kai |
兰州理工大学材料科学与工程学院 |
| LIU Tian-peng |
兰州理工大学材料科学与工程学院 |
| DU Xue-yan |
兰州理工大学材料科学与工程学院 |
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| Abstract: |
| In this paper, in order to understand the recovery and reuse of iron in nickel slag, the melting characteristics and viscosity of CaO-SiO2-FeO-MgO nickel slag system were calculated theoretically by FactSage thermodynamic software. The results show that: the liquidus temperature of the slag system decreases first and then increases when the ratio of CaO/SiO2 increases in the range of 0.1~1.2, and reaches the lowest value at 0.6; as the content of MgO increases in the range of 7~17 wt%, the liquidus temperature increases gradually; the viscosity of the slag system decreases first and then increases with the increase of CaO/SiO2 ratio in the range of 1300℃~1380℃, while decreases in the range of 1380℃~1500℃; similarly, the viscosity of the slag system decreases first and then increases with the increase of MgO content in the range of 1360℃~1500℃, while decreases in the range of 1500℃~1560℃. The experimental results show that the change of melting temperature of nickel slag is consistent well with the calculated results, which indicates that the FactSage thermodynamics software is guiding significance in calculating the melting characteristics and viscosity of nickel slag system. |
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