Abstract
Titanomagnetite concentrate is difficult to agglomerate by the traditional sintering process (TSP). In this study, the agglomeration properties of titanomagnetite concentrate were studied using the composite agglomeration process (CAP). It was shown that, by adding 40 wt.% pelletized feed, an excellent sinter with yield of 74.33%, a tumbler index of 58.93%, and productivity of 1.65 t (m2 h)−1 were achieved, which were increased by 11.72%, 12.03%, and 37.16% compared with TSP, respectively. Meanwhile, for CAP, the solid fuel consumption was only 43.87 kgcoke/tproduct and the reduction disintegration index of RDI+3.15 was 73.53%. They were decreased by 6.34 kgcoke/tproduct and increased by 24.31%, respectively. The better product quality was mainly attributed to a larger proportion of calcium ferrite and silicoferrite of calcium and aluminum group minerals formed in CAP, which restrained the negative effect of perovskite on agglomeration in association with the matrix feed with ultra-high basicity. The results showed that CAP is an efficient method for agglomeration of titanomagnetite concentrate.
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19 April 2021
A Correction to this paper has been published: https://doi.org/10.1007/s11837-021-04693-z
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Acknowledgements
This work was supported by the National Natural Science foundation of China (No. 51874355), the National Key Research & Development Program of China (2017YFB0304301) and the Fundamental Research Funds for the Central Universities of Central South University (No. 202044016).
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This article was updated to correct the duplication of part b in Figure 2.
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Jiang, T., Xu, L., Zhong, Q. et al. Efficient Preparation of Blast Furnace Burdens from Titanomagnetite Concentrate by Composite Agglomeration Process. JOM 73, 326–333 (2021). https://doi.org/10.1007/s11837-020-04480-2
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DOI: https://doi.org/10.1007/s11837-020-04480-2