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Simulation of thermal profile in a single pellet during drying process with CFD method

Gitiara, A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. Publisher: TMMOB Maden Muhendisleri Odasi , 2015
  3. Abstract:
  4. Green iron oxide pellets are indurated with thermal treatment in pelletizing plant to achieve sufficient mechanical properties and to be used in iron-steel industry. In the first stage, the pellets are dried with hot air coming from the firing unit. High heat transfer makes the evaporation rate exceeding the outgoing steam rate from the pellets and as a result, increasing the inner pressure of the pellets and fragment. On the other hand, low heat transfer causes low production rate. Using the related equations and considering the pellets' moisture and porosity and applying the pellets' condition on parameters such as specific heat capacity and heat conductivity, an acceptable standard is achieved for simulation. The current work has focused on investigating the pellets' drying process to achieve the optimized condition and consequently, lowering the energy consumption and increasing the process efficiency. Simulating by ANSYS Fluent software, the velocity and temperature of the gas are studied to reach the optimized condition
  5. Keywords:
  6. Pellet drying ; Drying ; Energy utilization ; Heat transfer ; Navier Stokes equations ; Pelletizing ; Specific heat ; Steelmaking ; High heat transfers ; Iron oxide pellet ; Iron-steel industries ; Navier Stokes ; Optimized conditions ; Process efficiency ; Production rates ; Simulation ; Iron and steel industry
  7. Source: Proceedings of the 24th International Mining Congress of Turkey, IMCET 2015, 14 April 2015 through 17 April 2015 ; 2015 , Pages 797-803 ; 9786050107050 (ISBN)