Climate neutral operations
Climate and energy
A long-term Climate Roadmap that aims to decouple earnings from climate impact emissions is underway. The Climate Roadmap will guide strategy and business planning, as well as form the basis for action plans in the years to come.
The areas covered in this work include upstream CO2 emissions, efficient sourcing of raw materials and transport, supply of fuels and energy, and internal energy efficiency.
In 2018, our direct (scope 1) emissions were 270,840 tonnes in total. Our largest source of direct carbon dioxide emissions is from our use of fossil process coals and fuels in production.
Natural gas represents a major part of our CO2 emissions from fuels. The rest is from LPG, diesel and petrol.
Our indirect emissions (scope 2) are from purchased electricity. The individual companies within Höganäs are free to choose electricity with a higher percentage of renewable sources. We are exploring the business impact of alternative electricity sourcing. Pre-studies to turn to renewable electricity are running in the US, India, China, Belgium and Sweden.
We are mapping our transport emissions to create a baseline for systematic improvements. The results of the mapping are used to prioritize actions for reducing emissions from necessary transport in the years to come.
New technique to produce renewable energy gas
There are currently few realistic alternatives to replace fossil fuels (naturals gas) for Höganäs, due to the need for precise process control, high temperature and purity. To initiate a change we started the Probiostål project and a collaboration with Cortus Energy who have developed the Woodroll® process, a technique for gasification and restructuring of biomass to renewable energy gas (renewable synthesis gas).
After a number of studies, a pilot plant was built at our site in Höganäs, Sweden, to perform tests on an industrial scale. If the technology is proven for use on an industrial scale, the installed unit alone will enable us to reduce our fossil CO2 emissions by about 10,000 tonnes per year.
Renewable raw materials
Fossil process coal used in our production is a challenge where we are taking the lead to become more renewable. The sponge iron plant is the only operation within the Group where we use fossil coke and anthracite to reduce iron ore into metallic iron. Today, the reduction process accounts for almost 70 per cent of the Höganäs Group’s direct CO2 emissions.
As part of our development programme for renewable alternatives we have identified and tested biochar as a replacement for some of the fossil coal. The ongoing development is promising and can, if successful, result in a reduction of up to 10 per cent of the Höganäs Group’s total direct emissions, or the equivalent of 28,000 tonnes of CO2 per year.
The pilot plant for renewable energy gas can also be used to produce bio-coke. This will enable us to evaluate biogenic process carbon from various renewable raw materials with the long-term objective to replace as much fossil carbon in the sponge iron process as possible.
Höganäs’ energy use consists of fuel consumption and purchased energy. Some of the energy used is converted into residual heat which we can deliver to external parties. The main part goes to district heating and some to the municipal water treatment plant.
Our present energy efficiency initiative, the ‘Energy Challenge’, has the goal of a 10 per cent reduction in energy use per produced ton of metal powder between 2010 and 2020, which is a challenging goal. An additional target for securing efficient energy handling is that our most energy intensive operational units with melting operations should be certified as ISO 50001 energy management by the end of 2021. Our major Swedish production sites are already certified and other production sites are on their way towards compliance.
Research to replace fossil coal
“The project will develop knowledge of bio-coal in order to replace as much fossil coal as possible in our manufacturing processes and at other companies in the industry,” says Ryan Robinson, engineer at Höganäs.
The research project is structured in three stages, which essentially means that the research team will draw up a specification for bio-coal for the two main processes at Höganäs for metal powder: the sponge iron process and the atomization process. They will then investigate the various process parameters for the production of bio-coal that meet the specifications. The third and final stage is to create a data model so that they can scale up the application more specifically in the sponge iron process. In parallel with this, Höganäs is carrying out practical trials to see how the material works on a larger scale.
Kentaro Umeki, Associate Professor at Luleå University, is project manager and is being assisted by two senior researchers and three doctoral students.
“We want to contribute to the development of a more sustainable society through our research. Höganäs is a serious, active partner that really wants to convert its production system, from its current use of large volumes of fossil coal to becoming fossil-free. If these climate goals are to be achieved, all companies in the steel industry must do the same. The environmental impact will be one of the most important criteria when consumers choose products, and it is extremely important for us to be able to choose products that are produced using green steel,” says Kentaro Umeki.
Our work to replace fossil coal and fossil fuels with renewable alternatives
“The project will develop knowledge of bio-coal in order to replace as much fossil coal as possible”
Ryan Robinson, engineer at Höganäs.