2022.03.10

Renewable Energy in Steel Manufacturing

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Steel is made from liquid iron in a blast furnace, whereas steel is made from scrap in an electric arc furnace. Electric arc furnaces generate heat using two distinct types of electrical currents. The heat from the blast furnace's stove area melts metal by converting pushed air into hot air.

Are you interested in Decarbonization in Steel Production with high productivity and ready to adopt an eco-friendly method in shifting to Renewable Energy Consumption? Explore the journey this time in our blog.

Natural Resources in BF/BOF/EAF

Steel manufacture requires metallurgical coal, which is one of the most commonly used construction resources on the planet. One ton of steel requires around 800 kgs of coal, with basic oxygen blast furnaces producing over 70% of world steel.

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A contemporary blast furnace takes around 5.26 tons of charge materials to generate one ton of hot metal (iron). 1.67 tons of iron-bearing materials (pellets, sinter, ore, mill scale, trash), 0.67 ton coke, 0.25 ton flux (limestone, dolomite), and 2.67 tons of air. The overall energy and material consumption per ton of steel for the BF-BOF route are 2.8 and 11 times higher, respectively than for the EAF route.

To put the relative carbon emissions of the two types of steel production in perspective, the World Steel Association estimates that the average blast furnace requires around 800 kgs of coal to produce a tonne of steel, whereas the average electric arc furnace (which uses mostly recycled steel) only requires 16 kgs of coal.

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Shift to Green Steel Production with Renewable Electricity

Steel is responsible for around 7% - 9% of all direct emissions from fossil fuels worldwide, with coal burning accounting for the majority of these. Clearly, the steel sector has a problem in lowering carbon emissions. Because energy accounts for between 20% and 40% of the cost of steel manufacturing, "green steel" is simply not an option for most big manufacturers. Fortunately, EAF feed recycled steel or iron smelted with natural gas, and hydrogen are used in 30% of the world's steel output. 

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Hydrogen-based steelmaking is the most frequent technique connected with greener steel. This technology uses hydrogen as both an energy source and a reducing agent instead of coal, drawing on renewable electricity to power the process and generating an entirely fossil-free end-to-end solution. Around 40% of European steel is produced by recycling scrap metal, which is also a low-carbon form of manufacturing.

Daiwa CA Lance Used in EAF Steelmaking

DAIWA CA LANCE is our main product, used for oxygen and carbon injection for steel making process mainly with electric arc furnace.

We provide the Calorized layer and Ceramic coating both outside and inside of the pipe with the intention to make it stand for a much longer time than normal carbon steel pipe. And this is why Calorized Lance becomes a good option for oxygen or carbon injection in the steelmaking process.

 

All manufacturing on Earth must decarbonize, and we are committed to lowering carbon dioxide emissions from the steel production process by offering our CA Lance to clients. Since our product is one consumable material used for steel production in EAF, we can contribute with end-users on the journey of decarbonization and make the Earth cleaner and safer. Allow us to accompany you in your quest to create a more peaceful, joyful, and clean planet.

 

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Renewable Energy in Steel Manufacturing