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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 828 pages |
| ISBN: | 978-0-9879917-0-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Thermal conductivity of manganese bearing slags - an introduction
Joalet Dalene Steenkamp1; P. Chris Pistorius2; Merete Tangstad3;1UNIVERSITY OF PRETORIA, Pretoria, South Africa; 2CARNEGIE MELLON UNIVERSITY, Pittsburgh, United States; 3NTNU, Trondheim, Norway;
Type of Paper: Regular
Id Paper: 405
Topic: 4
Abstract:
In the production of manganese ferroalloys, creating a freeze lining is a wellestablished technology applied in furnace containment system designs. Heat transfer calculations are utilised in the design of these systems and in monitoring the condition thereof during operation. Inputs to these calculations - i.e. the coefficients of thermal conductivity and thermal convection - have to be determined experimentally. Published, scientific data is limited. The authors illustrates the relative importance of the coefficients of thermal conductivity and thermal convection on the thickness of a freeze lining by conducting a sensitivity analysis on a onedimensional heat transfer calculation for a circular furnace. They report coefficients of thermal conductivity measured for natural, rich manganese-bearing slag cooled at different cooling rates. The slag was cooled at different cooling rates to create slag samples with a glassy structure or a crystalline structure. The coefficients of thermal conductivity were measured utilising the lazer flash measurement technique in the temperature range room temperature to 1000 oC.