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Utilisation of the -8+5mm Sishen iron ore fraction in the Sintering process September 2008 Andre Dippenaar

Utilisation of the -8+5mm Sishen iron ore fraction in the Sintering process September 2008 Andre Dippenaar. Sishen mine products : Lump ore: -25+8mm Fine ore: -5mm Intermediate fraction: -8+5mm. Introduction. Pilot Plant Sinter Pot tests Bc sinter – 50% fine Thaba, 50% fine Sishen

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Utilisation of the -8+5mm Sishen iron ore fraction in the Sintering process September 2008 Andre Dippenaar

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  1. Utilisation of the -8+5mm Sishen iron ore fraction in the Sintering processSeptember 2008Andre Dippenaar

  2. Sishen mine products: Lump ore: -25+8mm Fine ore: -5mm Intermediate fraction: -8+5mm Introduction

  3. Pilot Plant Sinter Pot tests Bc sinter – 50% fine Thaba, 50% fine Sishen Coarse Sinter - Half of fine Sishen replaced with coarse Sishen50% fine Thaba, 25% fine Sishen, 25% coarse Sishen Concentrate additions – 5, 10 and 15 %

  4. Sinter spesifications % SiO2 5.2 % MgO 0.77 % FeO 8.0 Basicity %CaO/SiO2 = 2.0 Experimental Procedure

  5. Sinter working procedures Sinter outputs Tests on sinter product Experimental Procedure

  6. Results – Ore fractions used Ore Sieve analyses

  7. Identification of the different pot tests: Fine Sishen sinters FS 0C - Base case sinter with 50% Fine Sishen and 0% Concentrate FS 5C - Fine sinter with 45% Fine Sishen and 5% Conc. Coarse Sishen sinters CS 0C - Coarse sinter with 25%Fine Sishen, 25% Coarse Sishenand 0% Conc. CS 5C - Coarse sinter with 20%Fine Sishen, 25% Coarse Sishenand 5% Conc CS 10C - Coarse sinter with 15% Fine Sishen, 25% Coarse Sishenand 10% Conc. CS 15C - Coarse sinter with 10%Fine Sishen, 25% Coarse Sishenand 15% Conc Results

  8. Results Raw material Mixture Sieve analyses • FS 0C – 2.5 mm • CS 0C – 3.23 mm

  9. Results - Sinter Pot Tests

  10. Results – Production Rate

  11. Results – Fuel Consumption

  12. Results – Cake Shrinkage

  13. Results – Sinter Product size

  14. Results – Physical and Metallurgical properties

  15. Results – Cold Strength

  16. Results – Hot strength +3.15 mm

  17. Results – Hot strength -0.5mm

  18. Results – Reducibility

  19. Results – High temperature properties

  20. Results – High temperature properties

  21. Results – Mineralogy

  22. Results – Mineralogy

  23. Results – Mineralogy

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