Essays about: "iron reduction"

Showing result 6 - 10 of 63 essays containing the words iron reduction.

1. 6. Hydrogen-induced Fluidized Bed Reduction : Evaluation of the Effect of Pressure, Particle Size, Gas Mixture and Temperature on the Minimum Fluidization Velocity of Iron Ore Fines

   University essay from KTH/Materialvetenskap

   Author : Joakim Käck; Sebastian Uhlin; [2023]
   Keywords : ;

   Abstract : Steel is used worldwide and there are demands for an increase in current production. The problem emerges because steel and iron-making industries release vast amounts of CO2 and need to be more environmentally sustainable. READ MORE

3. 7. Heat recovery from low emission steel production through electrolysis and hydrogen reduction

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Sofia Kongshöj; [2023]
   Keywords : Electrolysis; H2 Green Steel H2GS ; waste heat recovery; district heating.; Earth and Environmental Sciences;

   Abstract : The steel industry is a large emitter of carbon dioxide and uses a lot of energy. Because of an increased awareness of the detrimental effects of climate change, research in alternative ways to operate steel plants have been made. It is now possible to build plants with far less emissions by using electrolysis and hydrogen reduction. READ MORE

4. 8. Theoretical Considerations and Experimental Observations on Heat Transfer in Hydrogen Direct Reduced Iron

   University essay from KTH/Materialvetenskap

   Author : Felix Göttfert; [2023]
   Keywords : Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Heat Transfer; Thermal Conductivity; Thermophysical Properties; Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Värmeöverföring; Termisk konduktivitet; Termofysiska egenskaper;

   Abstract : Steel has played an indispensable role in shaping our contemporary world  and will persist to play that role for the foreseeable future. However, the steel industry currently is responsible for 7% of the global CO2-emissions, primarily due to the conventional carbon-based reduction process of iron ore. READ MORE

5. 9. Conditions for Industrial Symbiosis surrounding a hydrogen based steel industry

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Erland Nylund; [2023]
   Keywords : Industrial Symbiosis; H-DRI steelmaking; Industrial Symbiosis Networks; Waste management; Supplementary Cementitious Material SCM ; circular economy; Industriell symbios; H-DRI stålproduktion; Industriell Symbios-nätverk; restmaterialhantering; alternativa cementmaterial; SCM ; cirkulär ekonomi.;

   Abstract : There is an ongoing transition to a more sustainable industry with lower climate impact. As part of this transition, the steel industry is expected to move from the conventional process for producing iron and steel using Blast Furnace (BF) and Basic Oxygen Furnace (BOF) processes, consuming large amounts of fossil fuels. READ MORE

6. 10. Understanding the potential future capacity of distributing green steel solutions - current knowledge and future challenges

   University essay from Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

   Author : Heba Alwan; [2023]
   Keywords : Carbon dioxide CO2 ; greenhouse gas GHG emissions; Steelmaking fossil-free; direct hydrogen reduction; Sustainability transitions.;

   Abstract : Transitioning from the conventional steel process to a direct hydrogen reduction process in the steel industry is a significant step towards reducing carbon dioxide emissions and achieving greater sustainability. The process involves using hydrogen gas as a reducing agent instead of carbon to remove oxygen from the iron ore. READ MORE