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Discovery of Silicon Carbide ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SiC Production Process
 
SiC  Furnace Recovery
Inside a SiC Furnace
SiC Properties ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Crystal Structure of Silicon Carbide
SiC Versus FeSi for Metallurgical Applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Crystal Structure of Silicon Carbide
Benefits of increased formation of Graphite Nuclei ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
increased formation of Graphite Nuclei (Continued…) ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],Benefits of lower impurity levels
[object Object],[object Object],[object Object],Benefits of SiC as a de-oxidising agent
Cost Benefit Analysis SiC vs FeSi FeSi + C cost analysis           Assumptions   Required % Carbon 3.3% FeSi 75% Silicon Required Silicon 2.5%   25% Fe Steel   Scrap   cost/kg R  3.50    Ferro   silicon cost/kg R  13.50    Carbon cost/kg R  4.50    Steel scrap Silicon 0.3%   Steel scrap Carbon 0.4%       Based on melt of kg 1 000    Component Yield kg cost/kg Total cost   Steel scrap 95% 1 053  R  3.50  R  3 684    Ferro Silicon 90% 33  R 13.50  R  440    Carbon 100% 29  R  4.50  R  131    Add (FeSi) Fe benefit  100% 8 R  3.50  R  -29            R  4 226   
Cost Benefit Analysis SiC vs FeSi SiC + C cost analysis   SiC = (70% Si, 30% C) Assumptions SiC 85% Required % Carbon 3.3% Silicon 60% Required Silicon 2.5% Carbon 26% Steel Scrap cost/kg R  3.50  Free C 5% SiC cost/kg R  10.00    Carbon cost/kg R  4.50    Steel scrap Silicon 0.3%   Steel scrap Carbon 0.4%       Based on melt of kg 1 000    Component Yield kg cost/kg Total cost Steel scrap 95% 1 053  R  3.50  R  3 684  Silicon Carbide 90% 41  R  10.00  R  411  Carbon 100% 29  R  4.50  R  131  Add Free C benefit  100% 13 R  4.50  R  -56          R  4 169
Presenter Geordie Osler  CEO: Sublime Technologies    BSc (Eng) Mech (Hon) : UCT B.Comm : UNISA   Columbus Stainless Steel 1995 – 1997 Pyromet 1997- 2006  Sublime 2001 - present

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Silicon Carbide

  • 1.  
  • 2.
  • 4.  
  • 5. SiC Furnace Recovery
  • 6. Inside a SiC Furnace
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13. Cost Benefit Analysis SiC vs FeSi FeSi + C cost analysis           Assumptions   Required % Carbon 3.3% FeSi 75% Silicon Required Silicon 2.5%   25% Fe Steel Scrap cost/kg R 3.50   Ferro silicon cost/kg R 13.50   Carbon cost/kg R 4.50   Steel scrap Silicon 0.3%   Steel scrap Carbon 0.4%       Based on melt of kg 1 000   Component Yield kg cost/kg Total cost   Steel scrap 95% 1 053 R 3.50 R 3 684   Ferro Silicon 90% 33 R 13.50 R 440   Carbon 100% 29 R 4.50 R 131   Add (FeSi) Fe benefit 100% 8 R 3.50 R -29           R 4 226  
  • 14. Cost Benefit Analysis SiC vs FeSi SiC + C cost analysis   SiC = (70% Si, 30% C) Assumptions SiC 85% Required % Carbon 3.3% Silicon 60% Required Silicon 2.5% Carbon 26% Steel Scrap cost/kg R 3.50 Free C 5% SiC cost/kg R 10.00   Carbon cost/kg R 4.50   Steel scrap Silicon 0.3%   Steel scrap Carbon 0.4%       Based on melt of kg 1 000   Component Yield kg cost/kg Total cost Steel scrap 95% 1 053 R 3.50 R 3 684 Silicon Carbide 90% 41 R 10.00 R 411 Carbon 100% 29 R 4.50 R 131 Add Free C benefit 100% 13 R 4.50 R -56         R 4 169
  • 15. Presenter Geordie Osler CEO: Sublime Technologies   BSc (Eng) Mech (Hon) : UCT B.Comm : UNISA   Columbus Stainless Steel 1995 – 1997 Pyromet 1997- 2006 Sublime 2001 - present