Experimental study on treatment of the tailings containing manganese using composite agglomeration process

Teng Fei; Zeng Zhiyan; Guo Peimin; Yue Chongfeng

doi:10.7513/j.issn.1004-7638.2022.04.018

Volume 43 Issue 4

Sep. 2022

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Teng Fei, Zeng Zhiyan, Guo Peimin, Yue Chongfeng. Experimental study on treatment of the tailings containing manganese using composite agglomeration process[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 114-120. doi: 10.7513/j.issn.1004-7638.2022.04.018

Citation:

Teng Fei, Zeng Zhiyan, Guo Peimin, Yue Chongfeng. Experimental study on treatment of the tailings containing manganese using composite agglomeration process[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 114-120. doi: 10.7513/j.issn.1004-7638.2022.04.018

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Experimental study on treatment of the tailings containing manganese using composite agglomeration process

doi: 10.7513/j.issn.1004-7638.2022.04.018

1.
State Key Laboratory of Advanced Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China
2.
China Minmetals Beryllium Co., Ltd., Hengyang 421513, Hunan, China
3.
China Iron and Steel Research Institute Engineering Technology Center Co., Ltd., Beijing 100081, China

Received Date: 2022-03-30
Publish Date: 2022-09-14

Abstract

Abstract

In order to address the issue of poor material permeability and low yield and quality of sinter when a kind of tailings containing manganese was used in the 100% concentrate sintering process, the rational utilization of tailings containing manganese was investigated by the composite agglomeration process. Considering the requirements of blast furnace ironmaking on raw material and slag basicity, the silica, dolomite and burnt lime were added to adjust the basicity of the composite sinter. Through the lab-scale sintering pot test, the influencing factors such as fixed carbon ratio of composite material, the ratio of pellet and the distribution mode were systematically studied. The results showed that it was feasible to utilize the tailings containing manganese by the composite agglomeration process. The appropriate fixed carbon ratio could be reduced to 3.3%, and the suitable pellet ratio was 40%. The reduction index (RI) was 72.49%, which was 3.27 percentage points lower than that of ordinary sinter. The low-temperature reduction-disintegration index (RDI_{+3.15 mm}) of composite sinter was 79.53%, which was 3.49 percentage points higher than that of ordinary sinter. The melting and dropping property of the composite sinter was better than those of the ordinary sinter. The microstructure of the composite ore was mainly porphyritic structure composed of magnetite and a small amount of glass phase. The content of calcium ferrite binder phase in the matrix parts was significantly lower and the amount of dicalcium silicate was higher than that of ordinary sinter.
- sintering,
- tailings containing manganese,
- composite agglomeration process,
- metallurgical performance,
- mineral microstructure

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References(13)

References

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