Effect of Coated Cow Dung on Fluidization Reduction of Fine Iron Ore particles
| Autor: | Qiyan Xu, Zhanghan Gu, Mingzhu Huangfu, Zhiyou Liao, Qingmin Meng, Baoguo Wu, Ziwei Wan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Whiskers 0211 other engineering and technologies Oxide Bioengineering TP1-1185 02 engineering and technology engineering.material Reduction (complexity) sticking ratio chemistry.chemical_compound cow dung metallization rate Chemical Engineering (miscellaneous) Particle adhesion Fluidization QD1-999 021102 mining & metallurgy Chemical technology Process Chemistry and Technology bond loss 021001 nanoscience & nanotechnology Chemistry Chemical engineering Iron ore chemistry Melting point engineering fluidization 0210 nano-technology Cow dung |
| Zdroj: | Processes Volume 9 Issue 7 Processes, Vol 9, Iss 1175, p 1175 (2021) |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr9071175 |
| Popis: | The effects of reduction temperature, gas linear velocity, reduction pressure, reduction time, and reducing gas on the fluidized ironmaking process were studied for the fine iron Newman ore particles (0.154–0.178 mm) and the optimal experimental operating conditions were obtained. Under the optimal conditions, the effects of the coated cow dung on the reduction of fine iron ore particles were studied, and the inhibition mechanism of cow dung on particle adhesion in the fluidized ironmaking process was elucidated. The experimental results show that the optimal operating parameters are linear velocity of 0.6 m/s, reduction pressure of 0.2 MPa, reduction temperature of 1023 K, H2 as the reducing gas, and reduction time of 60 min. Cow dung can react with oxide in the ore powder to form a high melting point substance that can form a certain isolation layer, inhibit the growth of iron whiskers, and improve the fluidization. |
| Databáze: | OpenAIRE |
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