1 / 15

STEELMAKING THROUGH EAF ROUTE AND ITS EFFECT ON ENVIRONMENT BY DURBA TALUKDAR & SOMNATH GUPTA

STEELMAKING THROUGH EAF ROUTE AND ITS EFFECT ON ENVIRONMENT BY DURBA TALUKDAR & SOMNATH GUPTA M.N.DASTUR & COMPANY (P) LTD, KOLKATA. CO 2 EMISSIONS BY GLOBAL STEEL INDUSTRY. 2. ENERGY INTENSITY OF STEEL INDUSTRY. 3. SPECIFIC ENERGY CONSUMPTION (Unit : GCal/TCS). 4.

paige
Download Presentation

STEELMAKING THROUGH EAF ROUTE AND ITS EFFECT ON ENVIRONMENT BY DURBA TALUKDAR & SOMNATH GUPTA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. STEELMAKING THROUGH EAF ROUTE AND ITS EFFECT ON ENVIRONMENT BY DURBA TALUKDAR & SOMNATH GUPTA M.N.DASTUR & COMPANY (P) LTD, KOLKATA

  2. CO2 EMISSIONS BY GLOBAL STEEL INDUSTRY 2

  3. ENERGY INTENSITY OF STEEL INDUSTRY 3

  4. SPECIFIC ENERGY CONSUMPTION (Unit : GCal/TCS) 4

  5. SPECIFIC ENERGY CONSUMPTION(Unit : GCal/TCS)(Continued) Source: 1. Sail News – February – June 2010 2. Annual report 2010-11, Ministry of Steel, Govt. of India Note: **BF and Sinter Plant were under capital repair for approx 6 months. 5

  6. STEEL PRODUCTION THROUGH ELECTRIC FURNACES IN INDIA 6

  7. Solid waste Slag Dust Sludge Refractory debris Skull MAJOR WASTE GENERATED FROM EAF 7

  8. Gaseous waste Carbon-monoxide Carbon-dioxide Sulphur-dioxide Oxides of Nitrogen Particulate matter Liquid waste Polluted water MAJOR WASTE GENERATED FROM EAF ( Continued) 8

  9. COMPOSITION Main constituent – Calcium Oxide and Iron Other minor constituents - Magnesium, Manganese, Silicon, Aluminium APPLICATION Land Filling Road Construction Aggregate for concrete Clinker Kilns as a replacement for mined limestone Reuse in internal processes Soil conditioner Making prefabricated shapes for sewerage EAF SLAG 9

  10. COMPOSITION Main constituent – Iron Other constituents – Zinc in the form of oxide/sulphide/chloride Lead as oxide, Cadmium, other metals, halides and fluxes Treatment Recycling back into the furnace High temperature metal recovery processes Hydrometallurgical and pyro-metallurgical processes APPLICATION Reuse in EAF Landfilling Extraction of Zinc Use in rotary hearth furnace EAF DUST 10

  11. Harmful Substances Oxides of carbon Oxides of nitrogen Oxides of sulphur Cyanides Fluorides Measures adopted Improved Fume extraction system and control technologies Furnace off gas analysis system GASEOUS EMISSIONS 11

  12. Development of Shaft Furnace, Consteel Process and other processes The processes developed lead to : Lower noise level Lower dust content in off gases Reduced off-gas volume Full heat incineration of carbon-monoxide DEVELOPMENTS IN EAF PROCESS ROUTE 12

  13. TECHNOLOGICAL DEVELOPMENTS IN EAF 13

  14. The technological developments lead to : Reduced energy consumption Resource savings Reduction of carbon footprints Cost savings TECHNOLOGICAL DEVELOPMENTS IN EAF (Continued) 14

  15. THANK YOU 15

More Related