A tentative model of technology improvement in ferro- alloys manufacturing process & the business way forward
Содержание
- 2. Chrome/ Manganese/Iron/Quartz Ore Producers Ferro Alloy Producers Steel Producers Fe Cr Fe Mn Si Mn/FeSi/FeSiCr Stainless/Carbon
- 3. Issues with Indian Ferro‐alloys Industry
- 4. VARIOUS CHALLENGES FACED BY THE INDIAN FERRO ALLOY INDUSTRY Power Captive Vs. Grid Raw Material Ore
- 5. MASTER PLAN FOR SURVIVAL DEPLETION OF HIGH-GRADE ORE Low grade beneficiation Agglomeration Sintering
- 7. Agglomeration & Productivity Improvement for Manganese alloy Investment in beneficiation & use of agglomerated feed •
- 8. Waste Heat Utilization & Raw material Handling Minimizing heat loss and use waste gases for power
- 9. MARCHING FOR CONSERVATION OF MINERAL
- 10. MARCHING FOR NEW INNOVATION Waste management of Manganese ore MnSO4 for agriculture
- 11. EXPERIMENT OBSERVATIONS FOR MANGANESE ORE SINTERING • Low yield with 100% belt spillage material for sintering.
- 12. Experiment Conclusion Raw material belt spillages can be sintered in combination with high grade Mn ore
- 13. IMAGES OF SINTERING PROCESS
- 14. IMAGES OF SINTERING PROCESS
- 15. IMAGES OF SINTERING PROCESS
- 16. IMAGES OF SINTERING PROCESS
- 17. IMAGES OF SINTERING PROCESS
- 18. IMAGES OF SINTERING PROCESS
- 19. IMAGES OF SINTERING PROCESS
- 20. Agglomeration of Beneficiated Manganese Ore Fines SINTERING Micro‐Granulation is a required to sinter the beneficiated Mn
- 21. BRIQUETING • Mn ore briquettes were produced and trial conducted in different Ferro Alloys Plant. •
- 22. Mn‐ORE BENEFICIATION‐ NEW TECHNOLOGIES Physical Beneficiation a) Automatic Ore Sorter b) Electrostatic Separation c) Magnetic Flocculation
- 23. Mn‐ORE BENEFICIATION‐ NEW TECHNOLOGIES Pyrometallurgical Route • Magnetic Separation • Reduction Roasting
- 24. Mn‐ORE BENEFICIATION‐ NEW TECHNOLOGIES Hydrometallurgical Methods Leaching : Reducing agents natural gases, oxalic acid, methanol, carbohydrate,
- 26. PROCEDURES AT FERRO MANGANESE PLANT
- 27. OUTOTEC PROCESS
- 28. ENERGY EFFICIENT PROCESS FOR PALLETISING AND SINTERING
- 29. PREHEATING OF THE CHARGE
- 30. SEALED SUBMERGED-ARC FURNACE
- 31. POWER CONSUMPTION IN SMELTING
- 32. PROCESS IMPROVEMENTS TOWARDS MINERAL CONSERVATION • Wide variation in the low grade Chrome Ore Quality -
- 33. IMPROVEMENT JOURNEY IN BENEFICIATION OF CHROME ORE FOR BETTER MINERAL CONSERVATION OBJECTIVES Economic Use of Mineral
- 34. BRIQUETTING OF CHROMITES ORE In developing a technology for briquetting of chrome ores, it is important
- 35. LAYOUT MODIFICATION OF BRIQUETTE PLANT Briquette plant should be set of at back site of furnace
- 36. Briquette stacking design should be taken in such a concrete platform that each lot having conical
- 37. CHUTE TUBE FILLING PATTERN Alternate chute tube should be filled with charge always which will give
- 38. DESIGN OF POLLUTION PLANT Furnace generated flue gas through chimney ducting to pollution plant-bag filters-pollution stack
- 39. FURNACE OPERATIONAL POINT OF VIEW Required charge level in furnace hearth. Required electrode length as per
- 40. Increased heat efficiency by suitable selection of current and voltage ranges with proper electrode tip positioning(0.7-0.75
- 41. Proper permeability of charge material should be there to effectively utilize CO gas for reduction. For
- 42. If the Cr2O3 content in the ore is too high , some of the chromium oxide
- 43. Feed consists of temporarily bound fines with higher specific surface are which in turn leads to
- 44. Basicity of the slag should be maintained within the range 1.1-1.2 to have the easy separation
- 45. Hot alloy tapping should be taken with short runner with 2-nos CI- circular pan placing in
- 46. METAL HANDLING POINT OF VIEW At metal handling yard (adjacent to tapping bay),slag layer above the
- 47. Double jigging should be taken in same series after getting the tailings from two floating baths(one
- 48. REDUCTION REACTION INSIDE FURNACE HEARTH MnO2 Mn2O3 MnO (Low oxidation statae) Mno + C = Mn
- 49. RATE OF SMELTING REACTION Solid- Gas reaction at (750-1000)degree centigrade Stability of material at hot bath
- 50. CONCLUSION Maximum portion of the income of Ferro-alloy manufacturers is taken away by electricity. Hence the
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