Essays about: "sponge iron"

Showing result 1 - 5 of 9 essays containing the words sponge iron.

1. 1. The influence of particle size distribution on bio-coal gasification rate as related to packed beds of particles

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Markus Bäckebo; [2020]
   Keywords : Bio-coal; Particle size distributions; Reaction rate; Gasification;

   Abstract : This thesis is a part of a collaboration between Höganäs AB and Luleå University of Technology, aiming at replacing fossil process coal with bio-coal in their sponge iron process. The difference in gasification reactivity, i.e. READ MORE

3. 2. Usage of Natural Gas in Modern Steel-making : A Financial and Environmental Evaluation of Available Steel-making Technology in Sweden

   University essay from KTH/Materialvetenskap

   Author : William Wadbrant; [2020]
   Keywords : Direct Reduction; Iron sponge; Natural gas; LNG; DRI; Midrex; HYL; Electrical Arc Furnace; Blast furnace; Oxygen Converter; Capital expenditure; Modern Steelmaking; HYBRIT; Direkt reduktion; Järnsvamp; Naturgas; LNG; Hållbarhet; Koldioxidutsläpp; Växthusgaser; Midrex; HYL; Ljusbågsugn; Masugn; LD-Konverter; Kapital investering; Modern Ståltillverkning; HYBRIT;

   Abstract : A method of producing steel that is not used in Sweden today is direct reduction using natural gas, a method which could has enormous potential in the future of steelmaking. Historically, steelmaking prioritized productivity and profitability. READ MORE

4. 3. Life cycle assessment of coal based direct-reduced iron production in India

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

   Author : SABARISH ELANGO; [2020]
   Keywords : ;

   Abstract : The production of iron through direct reduction (Direct-Reduced Iron; DRI) involves the use of natural gas or coal to reduce iron ore to iron through carbothermic reactions at a temperature below its melting point, negating the need for a blast furnace as otherwise required. In India, around 25% of iron is produced through direct reduction. READ MORE

5. 4. Towards a fossil free steel sector : Conditions for technology transfer of hydrogenbased iron and steel in Europe

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

   Author : Amanda Öhman; [2019]
   Keywords : hydrogen-based iron and steel; direct reduction; industry decarbonisation; energy transition; Multi-level perspective; technology transfer; vätgasbaserat järn och stål; direktreduktion; fossilutfasning i industrin; energiomställning; multinivåperspektiv; tekniköverföring;

   Abstract : In order to meet the targets of the Paris Agreement, there is a need to significantly reduce emissions from energy-intensive industries, iron and steel included. One promising technology with the potential to reduce the emissions related to iron and steelmaking to basically none is direct reduction with fossil free hydrogen, which requires large amounts of fossil free electricity. READ MORE

6. 5. Biochar in the Höganäs sponge iron process – techno-economic analysis of integrated production

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Oscar Olofsson; [2018]
   Keywords : Techno-economic analysis; system modeling; system integration; biochar; biomass; pyrolysis; sponge iron;

   Abstract : Biomass-based reducing agents have a potential to substitute fossil reducing agents in the steel industry. However, the industrial use of biomass-based reducing agents is currently in an early stage of development and has not yet been considered as a means to reduce fossil CO2 emissions, even though the use of fossil-based reducing agents for the iron and steel making cause the highest share of CO2 emissions. READ MORE