Steel, the permanent material for the circular economy. KIVI Jaarcongres 2017: Circulaire Economie

Transcription

1 Tata Presentation Steel Europe title, change View >> Header & Footer 1 Steel, the permanent material for the circular economy KIVI Jaarcongres 2017: Circulaire Economie

2 Europe 2 Agenda 1 Introduction 2 Circular economy & Steel 3 The future of steel-making

3 3 in IJmuiden, an integrated steel-making site Primary steelmaking process based on blast furnace and basic oxygen furnace 7 M ton/year of steel production Works arising gases used for heat and power generation. Product characteristics, main metallic coatings: tin, zinc, chromium, nickel etc. Main markets: transport, packaging and construction.

4 Our mission is to build the leading European Steel business that is sustainable in every sense Decarbonise From fossil fuel to using renewable energy Adopting carbon zero targets Integrate into the circular economy Preserve resources, zero waste From value chain to value cycle Leverage new technology Creating value through digital Become disruptive or be disrupted Manage risks Trade and currency risks, Brexit Ensure a level playing field Behave responsibly Be transparent and in constant dialogue

5 5 Circular economy Preserving value: Zero use of critical resources Zero waste Zero carbon 100% use of renewable energy

6 Steel is a permanent material, a long term investment that does not go to waste

7 Circular economy Close the material loop 7 Reduce Recycle

8 8 Circular economy Optimising the product lifecycle Caterpillar's Machine Rebuild Program Offers Same Quality as New Cat Machine The Cat Certified Rebuild Program offers a like-new machine with a like-new warranty and a new serial number, all at a fraction of the cost of a comparable new machine Renew Reuse

9 9 Life Cycle Analysis (LCA) approach - Example LCA Steel vs Aluminium Global warming potential (Kg CO2 equivalent) Alu Steel Production phase (Incl. recycling) Km Use phase distance travelled

10 Circular economy - practices Construction 40% of material use 50% of CO2 emission 20% water use 25% of all transport 35% of all waste Circular construction in steel Increases CO2 competitiveness from 10% to 30 40%, as compared to concrete Results in reduced demand for steel Requires big data solutions to understand available stock

11 Europe 11 Agenda 1 Trends and challenges that are affecting the steel sector 2 Introduction to HIsarna 3 Technology comparison 4 Discussion 5 Conclusions

12 Europe 12 CO2 is formed as part of the chemical reaction to produce steel 1. Granular zone 3Fe2O3 + CO! 2Fe3O4 + CO2 Fe3O4 + CO! FeO + CO2 CaCO3! CaO + CO2 (at higher temperatures) 2. Thermal reserve zone FeO + CO! Fe + CO2 3. Cohesion zone FeO + CO! Fe + CO2 CO2 + C! 2CO 4. Dipping zone FeO + CO! Fe + CO2 FeO + C! Fe + CO MnO + C! Mn + CO P2O5 + 5C! 2P + 5CO SiO2 + 2C! Si + 2CO TiO2 + 2C! Ti + 2CO S + CaO + C! CaS + CO 5. Raceaway C+ O2! CO2 CO2+C! 2CO C + H2O! CO + H2 CO + H2O! CO2 + H2

13 Europe 13 Steel plays a key role in circular economy 3 Steel is the most recycled material in the world (95% approx.) Some challenges still remain: Need to increase scrap recycling of strip products Recovery of Zinc Zero waste CO2 re-use Process and product design for circularity

14 Europe 14 Reducing CO2 emissions remains a challenge 4 Paris Agreement: keeping a global temperature rise this century well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5 degrees Celsius EU program on energy and climate are among the main driving forces for CO2 reduction in steelmaking Global CO2e emissions 49,4 GtCO2e e emissions per year Others Agriculture Steel Petr & gas Cement Chemicals 13% 8% 6% 5% 4% 12% 13% 15% 24% Foresty Transport Power IJmuiden: CO2 Benchmark tco2/tcs excluding slag credits

15 Europe 15 Steel will continue to be a key material for the future however the industry faces several challenges Maximize resource efficiency: Increase production yield from raw material input Reduce energy use Exploit opportunity to use cheaper raw materials (coal and ores) Reduce CO2 emissions Create value for users: Increase ability to produce high value specialty steels Play a key role in circular economy: Recover metal coatings

16 Europe 16 What is the way forward? Several technical and strategic decisions faces Europe 1 Future production technologies + Blast furnace HIsarna HIsarna Electric arc furnace Hydrogen Electric arc furnace 2 CO2 emissions Carbon capture and storage Carbon capture and utilisation 3 Circularity Scrap recycling Zinc recycling Other materials

17 Europe 17 What is the HIsarna technology? Combination of cyclone converter furnace (CCF) and Smelting Reduction Vessel (SRV) technologies. Stage 1: CCF Fine ore is pre-reduced and melted in the melting cyclone. Main reaction: Fe 2 O 3 + CO! 2 FeO +CO 2 2 CO + O 2! 2 CO 2

18 Europe 18 Hisarna is a combination of the SRV and CCF technologies Stage 2: SRV Functions of SRV: Reduction of iron oxides dissolved in the slag layer Post combustion of the CO (and H 2 ) gas generated in the slag layer Transfer of the post combustion heat from the gas phase to the liquid bath Carburisation of the metal takes place 2 CO + O 2! 2 CO 2 2 C + O 2! 2 CO FeO + C! Fe + CO