The Shear Test of Iron Ore Pellets during Reduction at an Elevated Temperature
A key in design and operation of the direct reduction shaft furnace is to prevent iron ore pellets from clustering. A new rotating type shear tester was developed to measure the shear strength of the pellets during reduction and to relate it to the flow condition. The size of the cell is 144mm O. D....
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| Published in | Funtai Kogakkaishi Vol. 26; no. 9; pp. 672 - 677 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
The Society of Powder Technology, Japan
1989
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| Subjects | |
| Online Access | Get full text |
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| Abstract | A key in design and operation of the direct reduction shaft furnace is to prevent iron ore pellets from clustering. A new rotating type shear tester was developed to measure the shear strength of the pellets during reduction and to relate it to the flow condition. The size of the cell is 144mm O. D. and 80mm I. D., and the pellets in the cell are reduced by using CO gas at the temperature elevated to 980°C. The maximum load on the cell is 3.40kN for consolidation and 0.86kN during shear. The measured shear strength of the reduced pellets was from 40 to 70kPa, and it was decreased approximately to half by shearing continuously during reduction. |
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| AbstractList | A key in design and operation of the direct reduction shaft furnace is to prevent iron ore pellets from clustering. A new rotating type shear tester was developed to measure the shear strength of the pellets during reduction and to relate it to the flow condition. The size of the cell is 144mm O. D. and 80mm I. D., and the pellets in the cell are reduced by using CO gas at the temperature elevated to 980°C. The maximum load on the cell is 3.40kN for consolidation and 0.86kN during shear. The measured shear strength of the reduced pellets was from 40 to 70kPa, and it was decreased approximately to half by shearing continuously during reduction. |
| Author | MATSUKURA, Masakazu MURATA, Hiroyuki MIZUKAMI, Shunichi |
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| References | 3) Mori, K., R. Hidaka and Y. Kawai: J. Iron and Steel Inst., 66, 1287 (1980 9) Murata, H., M. Wakabayasi and T. Egusa: J. Soc. Powder Technol., Japan, 20, 558 (1983 1) Imanishi, N., R. Watanabe, T. Tutaya and I. Fujita: Suiyokwai-shi, 19, No. 2, 142 (1979 5) Ikeda, T., K. Inoue, T. Uenaka and M. Kanemoto: J. Iron and Steel Inst., 67, 726 (1981 8) Jenike, A. W.: Bulletin of the Uta Engineering Experiment Station, 108 (1961) and 123 (1964 7) Kaneko, D., Y. Kimura and M. Onoda: J. Iron and Steel Inst., 64, 681 (1978 10) Nagao, T.: Trans. Japan Soc. Mech. Eng., 33, No. 246, 229 (1967 6) Yamaoka, Y., H. Hotta and S. Majikawa: J. Iron and Steel Inst., 66, 1850 (1980 2) Tsuchiya, O., K. Ohtuki, T. Sugiyama, M. Onoda and I. Fujita: J. Iron and Steel Inst., 66, 1297 (1980 4) Narita, K., M. Maekawa and H. Kanayama: J. Iron and Steel Inst., 66, 1860 (1980 |
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| Snippet | A key in design and operation of the direct reduction shaft furnace is to prevent iron ore pellets from clustering. A new rotating type shear tester was... |
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| StartPage | 672 |
| SubjectTerms | Flowability Iron Ore Pellets Ring Cell Shaft Furnace Shear Test Yield Strength |
| Title | The Shear Test of Iron Ore Pellets during Reduction at an Elevated Temperature |
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