Celsa is genuine engaged in the environment and is having a high focus on a clean environment.
Celsa Nordics steel production is 100 % scrap based, and we are the largest recycling firm in Norway. Annually we recycle 800.000 tons of scrap, where approx 65 % is from Norway.
Steel is one of the best materials to recycle since it can easily be used again after long time, and can be recycled unlimited without loosing its unique properties.
One ton of steel made from scrap spares nature for 1350 kg iron ore, 450 kg coal and 20 kg limestone.
Most of the scrap arrives by boat and a significant part of the coastal traffic is organised as a reciprocal system where the same ships carry scrap to Mo i Rana and ship out our finished products.
Production of scrap-based steel requires only 25 % of the power required to melt steel from iron ore.
Celsa mainly use pollution free hydro-electric power.
20 % of our total energy consumption is by-product from nearby situated plants. These gases would have been burned off if Celsa could not use them, so this spares the environment by equivalent emissions from oil.
We try to keep the logistics from the meltshop to the rollingmill as good as possible, to maintain hot steel. This way we spare the environment for extra emissions and use of oil or gas.
We use light oil instead of heavy oil, which spares the environment for 25 % sulphide dioxin emissions compared to heavy oil.
Carbon monoxide emissions from Celsa are approximately 5-6 % of what comes from an integrated steel plant using ore as the raw material.
475 million tons of steel are recycled every year. This is equivalent to recycling 160 Eifel towers or 1.3 million cars every day! Recycling of steel is more than recycled materials from paper, glass, aluminium and plastic together!
We still build our society using a lot of steel, and the steel that fulfils its function in a life cycle remains to be steel in the next one.
CONSTEEL
July 1st 2008, Celsa Armeringsstål started using a new technology. This consists of three parts: Consteel, complete new baghousefilter and an activated carbon fixed bed.
The activated carbon fixed bed is a pioneer installation, and will decrease our output to the environment considerable.
Guarantee values for the new installation:
- Dust content at the Bag House outlet: 3 mg / Nm3
- Purification Mercury + Dioxins: > 95 %
- Noise level at the outlet of the chimney: max 85 dB
Dust
Consteel operation decreases dust production through chimnay by approx 30 %.
In addition to this the diffuse emissions will decrease with more than 70 %.
Energy efficiency
The new installation allows a process of preheating the scrap before its melting allowing a saving on the energy input. We estimate a 17% reduction in our input of Kwh/Tn after fully commissioning of the installation.
Flicker
Permanent flat bath mode of consteel makes sure that short circuit situations of electrodes are avoided. Consequently, because no peaks of reactive power, electric power grid disturbing flicker is consistently reduced.
Additional consteel benefits
Clean environment, due to keeping furnace roof closed during conveyor feeding and maintaining negative pressure in the entire preheating-melting system. The emissions of fumes and dust during basket charging is eliminated. Noise level is extremely low, compared to conventional EAF, because electric arc is always on a flat bath and covered by the foaming slag. No meltdown noise.
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