Biomass pyrolysis product-enhanced selective reduction-magnetic separation of iron sand

Huang Zhucheng; Shu Yang; Li Yixin; Tang Tingting; Xie Chenxi

doi:10.7513/j.issn.1004-7638.2023.03.003

Volume 44 Issue 3

Jun. 2023

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Huang Zhucheng, Shu Yang, Li Yixin, Tang Tingting, Xie Chenxi. Biomass pyrolysis product-enhanced selective reduction-magnetic separation of iron sand[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 16-22. doi: 10.7513/j.issn.1004-7638.2023.03.003

Citation:

Huang Zhucheng, Shu Yang, Li Yixin, Tang Tingting, Xie Chenxi. Biomass pyrolysis product-enhanced selective reduction-magnetic separation of iron sand[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 16-22. doi: 10.7513/j.issn.1004-7638.2023.03.003

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Biomass pyrolysis product-enhanced selective reduction-magnetic separation of iron sand

doi: 10.7513/j.issn.1004-7638.2023.03.003

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China

Received Date: 2023-03-16
Publish Date: 2023-06-30

Abstract

Abstract

Using clean, carbon neutral, highly reactive and renewable biomass as a reducing agent, limiting the escape of pyrolysis products by hermetic gas plugs, the direct reduction behavior of the biomass allotted within the iron sand was studied. The results show that a pressure of 60 kPa is rapidly developed in the reaction tank as a result of limiting the escape of pyrolysis products (CO、H₂、CO₂、H₂O 、C_xH_yO_z) from biomass pyrolysis, which facilitates the participation of H₂, CO in the reduction. The tar has higher activity and guarantees the source of H₂ in the later stage, which promotes the rapid reduction of iron sand at low temperature. Under the conditions of reduction temperature of 1120 °C and reduction for 80 min, the iron powder with 97.81% metallization and 97.81% Fe recovery can be obtained, as well as the titanium-rich slag with a TiO₂ recovery of 69.98% and a V₂O₅ recovery of 59.93%.
- iron sand,
- rapid direct reduction by low temperature,
- biomass,
- pyrolysis products

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References(15)

References

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