Title page for ETD etd-08192008-125855


Document Type Master's Dissertation
Author Lourens, Leon
URN etd-08192008-125855
Document Title Reduction of iron ore fines in the Ifcon furnace
Degree MEng (Metallurgical Engineering)
Department Materials Science and Metallurgical Engineering
Supervisor
Advisor Name Title
Prof J M A Geldenhuis Supervisor
Keywords
  • induction furnace
  • kinetics
  • reduction and melting
  • thermo gravimetric analyses
  • model
  • Ifcon®
  • temperature profile
  • production rate
Date 2003-04-20
Availability unrestricted
Abstract
This work involved an investigation into the mechanisms governing the reduction of material in the solids bed of the Ifcon® process. Thermo gravimetric analyses were done to investigate the influence of various operational parameters on the rate of solid state reduction. The experiments were modeled, and model predictions were compared to experimental results. Kinetic data was analised and the reduction rate constants were calculated. The rate constants were used as inputs to a model, which describes the reduction behaviour and temperature profile in a composite solids bed (similar to that in the Ifcon® process). High temperature reduction- and melting tests were done in an 150 kW induction furnace, to simulate final reduction in a solids bed. The temperature profile through the solids bed was measured and results were compared to model predictions. Finally the extent to which solid state reduction occurs in the solids bed was estimated as a function of production rate.

© University of Pretoria 2002

E145/ag

Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  01chapter1.pdf 1.72 Mb 00:07:58 00:04:06 00:03:35 00:01:47 00:00:09
  02chapter2.pdf 4.81 Mb 00:22:17 00:11:27 00:10:01 00:05:00 00:00:25
  03chapter3.pdf 2.52 Mb 00:11:39 00:05:59 00:05:14 00:02:37 00:00:13
  04references.pdf 137.52 Kb 00:00:38 00:00:19 00:00:17 00:00:08 < 00:00:01
  05appendices.pdf 5.40 Mb 00:25:01 00:12:52 00:11:15 00:05:37 00:00:28
  front.pdf 1.74 Mb 00:08:04 00:04:09 00:03:37 00:01:48 00:00:09

Browse All Available ETDs by ( Author | Department )

If you have more questions or technical problems, please Contact UPeTD.