Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (10): 1452-1455.DOI: 10.12068/j.issn.1005-3026.2014.10.019

• Materials & Metallurgy • Previous Articles     Next Articles

Numerical Simulation of Carbonation Reactor for Calcified Residues

ZHANG Zimu1, LIU Yan2, ZHANG Jun3, WANG Ying2   

  1. 1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Ecological Utilization of Multimetal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang 110819, China; 3. Beijing General Research Institute of Mining and Metallurgy, Beijing 100160, China.
  • Received:2013-11-15 Revised:2013-11-15 Online:2014-10-15 Published:2014-05-19
  • Contact: LIU Yan
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Abstract: Aiming at the problem of the low utilization of lowgrade bauxite in industry and that of the highalkali and highaluminum contents in red mud, a new method of calcificationcarbonation was proposed to process lowgrade bauxite and red mud. A venturi carbonation reactor for calcified residues was designed, and the dynamic characteristics of gasliquidsolid threephase flow in the reactor were simulated by using ANSYS130/Fluent. The effect of operation parameters such as superficial gas velocity on velocity field and gas holdup in the reactor was simulated and investigated. It shows that high gas velocity benefits gasliquid mass transfer and reaction, but the gas holdup should not be too large. The simulation results of average gas holdup agree well with the measured ones, thus the effectiveness of the method is verified. The results have a certain reference value for the design and application of venturi carbonation reactor.

Key words: calcificationcarbonation, carbonation reactor for calcified residues, numerical simulation, velocity field, gas holdup

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