Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption

Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption

In order to clarify the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the fluidity of a low-alumina blast furnace slag system, the influence law of slag fluidity with different MgO/Al<sub>2</sub>O<sub>3</sub> ratios was studied based on the co...

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Autores principales: Wenlong Zhan, Yi Liu, Tengfei Shao, Xiao Han, Qinghai Pang, Junhong Zhang, Zhijun He
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
low alumina slag
viscosity
fluidity
blast furnace
Crystallography
QD901-999
Acceso en línea:https://doaj.org/article/358b1cb9b05c4ca59a2af523bed46451
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spelling oai:doaj.org-article:358b1cb9b05c4ca59a2af523bed464512021-11-25T17:19:12ZEvaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption10.3390/cryst111113862073-4352https://doaj.org/article/358b1cb9b05c4ca59a2af523bed464512021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1386https://doaj.org/toc/2073-4352In order to clarify the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the fluidity of a low-alumina blast furnace slag system, the influence law of slag fluidity with different MgO/Al<sub>2</sub>O<sub>3</sub> ratios was studied based on the composition of blast furnace slag through a viscosity experiment and themodynamic software. By studying the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the activation energy of viscous flow of slag combined with FT-IR, the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the thermal-stability of low-aluminum slag was interpreted from the microstructure level. Results indicated that the viscosity and the melting temperature of slag both showed a gradual downward trend due to the increase of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio. Besides, the temperature stability of the low aluminum slag became more stable due to the depolymerization of the complex structure of slag. Considering the actual operating conditions of blast furnace, the MgO/Al<sub>2</sub>O<sub>3</sub> ratio of slag was suggested to be controlled to 0.60 and the basicity to be no higher than 1.20 under the conditions of this investigation. Industrial test results showed that the coke rate could be saved as 3.49 kg/t when the MgO/Al<sub>2</sub>O<sub>3</sub> ratio decreased from 0.70 to 0.58.Wenlong ZhanYi LiuTengfei ShaoXiao HanQinghai PangJunhong ZhangZhijun HeMDPI AGarticlelow alumina slagviscosityfluidityblast furnaceCrystallographyQD901-999ENCrystals, Vol 11, Iss 1386, p 1386 (2021)
institution DOAJ
collection DOAJ
language EN
topic low alumina slag
viscosity
fluidity
blast furnace
Crystallography
QD901-999
spellingShingle low alumina slag
viscosity
fluidity
blast furnace
Crystallography
QD901-999
Wenlong Zhan
Yi Liu
Tengfei Shao
Xiao Han
Qinghai Pang
Junhong Zhang
Zhijun He
Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
description In order to clarify the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the fluidity of a low-alumina blast furnace slag system, the influence law of slag fluidity with different MgO/Al<sub>2</sub>O<sub>3</sub> ratios was studied based on the composition of blast furnace slag through a viscosity experiment and themodynamic software. By studying the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the activation energy of viscous flow of slag combined with FT-IR, the effect of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio on the thermal-stability of low-aluminum slag was interpreted from the microstructure level. Results indicated that the viscosity and the melting temperature of slag both showed a gradual downward trend due to the increase of the MgO/Al<sub>2</sub>O<sub>3</sub> ratio. Besides, the temperature stability of the low aluminum slag became more stable due to the depolymerization of the complex structure of slag. Considering the actual operating conditions of blast furnace, the MgO/Al<sub>2</sub>O<sub>3</sub> ratio of slag was suggested to be controlled to 0.60 and the basicity to be no higher than 1.20 under the conditions of this investigation. Industrial test results showed that the coke rate could be saved as 3.49 kg/t when the MgO/Al<sub>2</sub>O<sub>3</sub> ratio decreased from 0.70 to 0.58.
format article
author Wenlong Zhan
Yi Liu
Tengfei Shao
Xiao Han
Qinghai Pang
Junhong Zhang
Zhijun He
author_facet Wenlong Zhan
Yi Liu
Tengfei Shao
Xiao Han
Qinghai Pang
Junhong Zhang
Zhijun He
author_sort Wenlong Zhan
title Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
title_short Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
title_full Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
title_fullStr Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
title_full_unstemmed Evaluating the Effect of MgO/Al<sub>2</sub>O<sub>3</sub> Ratio on Thermal Behaviors and Structures of Blast Furnace Slag with Low Carbon Consumption
title_sort evaluating the effect of mgo/al<sub>2</sub>o<sub>3</sub> ratio on thermal behaviors and structures of blast furnace slag with low carbon consumption
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/358b1cb9b05c4ca59a2af523bed46451
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