|
|
|
| Effect of mineral composition of iron ore on metallurgical properties of sinter |
| NIU Lele1,LIU Zhengjian1,ZHANG Jianliang1,2,ZHANG Zongwang1, WANG Yaozu1,DU Chengbo1 |
(1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing
100083, China；2. School of Chemical Engineering, The University of Queensland, St Lucia, QLD 4072, Australia) |
|
|
|
|
Abstract In order to study the effect of the micromineral composition of the blended ore on the properties of sinter, the mineral composition of the iron ore powder was first analyzed by XRD refinement, then the sintering pot test was designed, and the metallurgical properties of the obtained sinter were detected and the microstructure of the sinter was observed. The obtained results are as follows. The hematite and quartz could increase the softening start temperature. The hematite is also beneficial to the reducibility of sinter. The kaolinite is not conducive to the maintenance of reducibility of sinter, and also reduces the softening start temperature of sinter, and makes the melting temperature interval increase. As the content of goethite increasing, the lowtemperature RDI of sinter decreases first and then increases. In terms of mineral phase structure, the goethite is more likely to form the acicular calcium ferrite than hematite. The SiO2 produced by kaolinite decomposition is more active than quartz and is more likely to form the silicate phase. It is concluded that the hematite, goethite, kaolinite and quartz in the blended ore have a significant impact on the properties of sinter.
|
|
|
|
|
|
| [1] |
ZENG Zhi-hao1,ZOU Chong1,SHE Yuan1,2,YANG Jun1,MA Cheng1,HE Jiang-yong1. Effects of alkali metal enrichment on structure and gasification reactivity of blast furnace tuyere coke[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 452-461. |
| [2] |
LIU Ke, HAN Yi-hua, YANG Fan, ZHU Li-guang. Effect of MgO on microstructure of CaO-Al2O3 based quaternary system mold fluxes[J]. Iron and Steel, 2020, 55(5): 52-58. |
| [3] |
LI Si-jun， DU Jin-ke， PENG Yong-xiang， LI Ping， HU Bin. Numerical simulation study on single-point unequilibrium casting for beam blank in Laiwu Iron and Steel Company[J]. CONTINUOUS CASTING, 2020, 45(3): 1-9. |
| [4] |
ZHENG Yuan-shou. High speed production technology of 160 mm× 160 mm continuous casting in Sangang[J]. CONTINUOUS CASTING, 2020, 45(3): 10-13. |
| [5] |
WANG Bingxing，ZHU Fuxian，WANG Chao，LOU Haonan，. Application of oxide metallurgy in high heat input welding steels[J]. Iron and Steel, 2019, 54(9): 12-21. |
| [6] |
WANG Chengyong, MEN Dongpo, CHEN Peng, LI Ziwen. Nonlinear prediction model for caking index based on coal petrology[J]. Iron and Steel, 2019, 54(9): 22-26. |
|
|
|
|
