Applying Biochar Composite Briquette for Energy Saving in Blast Furnace Ironmaking

  • Kai Fan
  • Zi Yu
  • Huiqing TangEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


In this research, carbon composite briquette (CCB) was prepared using ultrafine iron-oxide fine (Size = 2.0 μm), and biochar fines (Size = 45.0 μm) by cold briquetting followed by heat treatment. Anti-pulverization capacity and reduction kinetics of the prepared biochar composite briquette (BCB) under simulated blast furnace (BF) conditions were investigated. The coke saving effect of charging BCB was analyzed by numerical simulation. Results showed that the prepared BCB was with a chemical composition of 0.77 wt% metallic iron, 72.59 wt% magnetite, 11.25 wt% wustite, 4.66 wt% gangue, and 11.10 wt% carbon. BCB could keep a crushing strength after partial reaction of more than 1900 N/briquette under the simulated BF conditions. Model simulations indicated that for a BF with a productivity of 6250 ton hot metal (tHM)/day, a coke rate reduction of 20 kg/tHM could be realized by replacing 10% sinter with BCB and moreover, the status of the BF was negligibly influenced.


Biochar Carbon composite briquette Blast furnace Coke rate reduction 



The authors thank the National Natural Science Foundation of China for supporting this work (Project No. U1960205).


  1. 1.
    Geerdes M, Chaigneau R, Kurunov I (2015) Modern blast furnace ironmaking: an introduction. Ios Press, AmsterdamGoogle Scholar
  2. 2.
    An R, Yu B, Li R, Wei YM (2018) Potential of energy savings and CO2 emission reduction in China’s iron and steel industry. Appl Energy 226:862–880CrossRefGoogle Scholar
  3. 3.
    Tan X, Li H, Guo J, Gu B, Zeng Y (2019) Energy-saving and emission-reduction technology selection and CO2 emission reduction potential of China’s iron and steel industry under energy substitution policy. J Clean Prod 222:823–834CrossRefGoogle Scholar
  4. 4.
    Zhou JC, Zhang CX, Li XP, Fan B (2010) Status of energy consumption and review and prospect of energy saving technologies of blast furnace procedure in China. J Iron Steel Res (China) 22(9):1–12Google Scholar
  5. 5.
    Tang HQ, Yun ZW, Fu XF, Du S (2018) Modeling and experimental study of ore-carbon briquette reduction under CO–CO2 atmosphere. Metals 8(4):205–215CrossRefGoogle Scholar
  6. 6.
    Tang HQ, Rong T, Fan K (2019) Numerical investigation of applying high-carbon metallic briquette in blast furnace ironmaking. ISIJ Int 59(5):810–819CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijingChina

Personalised recommendations