Displaying items by tag: Research

Japan: A proposal by Mitsubishi Group on researching CO₂ injection into concrete has been approved for a grant from the New Energy and Industrial Technology Development Organisation (NEDO). This joint project between Mitsubishi Group, Kajima Corporation, and Chugoku Electric Power aims to improve the existing technology so that it can be applied to the reinforced and cast-in-place concretes used in building construction. At present the group said that current carbon-recycling techniques are mainly used for unreinforced concretes, such as concrete blocks.

Mitsubishi Group has already been involved in the development of concrete projects that take advantage of carbon-recycling, including a zero-emission concrete called CO₂-SUICOM. It added that carbon capture, utilisation and storage (CCUS) technologies, including carbon-recycling, are an excellent opportunity for the company to use its strengths between industries that both emit and use CO₂.

Japan: Sumitomo Osaka Cement is working on a three year CO₂ mineralisation research project from 2020 to 2022 with Yamaguchi University, Kyushu University and the New Energy and Industrial Technology Development Organisation (NEDO). The initiative plans to develop the technology to build a process that captures CO₂ exhaust from cement and power plants and then mineralises it with calcium-containing waste materials. It intends to use the process practically in 2030.

Mexico: Cemex says that it is involved in a working group “focussed on the application of FastCarb aggregates to concrete production” as part of its efforts towards net-zero CO₂ concrete production. FastCarb, administrated by the US-based International Research and Exchanges Board, is a project aimed at the production of aggregates from recycled concrete containing trapped carbon dioxide (CO₂) requisitioned from industrial exhaust streams.

Cemex said, “After completing the first phase of the experimental approach at the laboratory level with promising preliminary results, the project is now entering the second phase seeking to tackle the industrial approach. In this industrial approach phase, Cemex was recently assigned to evaluate the physical and mechanical properties of the carbonated recycled concrete aggregates when used in ready-mix concrete in the laboratory facilities at the Cemex France National Technical Centre.”

Brazil: Norway-based Norsk Hydro and the Federal University of Para (UFPA) have announced their collaboration on the development of a low-carbon cement from bauxite residue from Norsk Hydro subsidiary Alunorte’s bauxite mining and alumina refining operations in the state of Pará. Electronic News has reported that the research partnership hopes to develop a new cement for commercial production and sale by 2030. This will use an estimated 500,000t/yr of waste bauxite residue.

Norsk Hydro bauxite and alumina research and development senior manager Erik Araujo said, “Hydro seeks to be a benchmark in sustainability in the aluminium industry. The research is an opportunity to promote intersectional advances in our environmental management, with a reduction in carbon emissions for the cement industry.

Hydrogen and its use in cement production has been adding a dash of colour to the industry news in recent weeks. Last week, Lafarge Zementwerke, OMV, Verbund and Borealis signed a memorandum of understanding (MOU) to plan and build a full-scale unit at a cement plant in Austria to capture CO₂ and process it with hydrogen into synthetic fuels, plastics or other chemicals. This week, Air Products and ThyssenKrupp Uhde Chlorine Engineers (TUCE) signed a strategic agreement to work together in ‘key regions’ to develop projects supplying green hydrogen. Both of these developments follow the awarding of UK government funding in February 2020 to support a pilot project into studying a mix of hydrogen and biomass fuels at Hanson Cement’s Ribblesdale integrated plant.

As the title of this column suggests there is an environmental colour code to describe how hydrogen is made for industrial use. This is a bit more codified than when grey cement gets called ‘green’ but it pays to remember what the energy source is. So-called ‘green’ hydrogen is produced by the electrolysis of water using renewable energy sources such as hydroelectric or solar, ‘Grey’ hydrogen is made from steam reforming using fossil fuels and ‘Blue’ hydrogen is similar to grey but has the CO₂ emissions from the fuels captured and stored/utilised. Price is seen as the main obstacle to wider uptake of hydrogen usage as a fuel in industry although this is changing as CO₂ pricing mounts in some jurisdictions and the connected supply chain is developed. A study by BloombergNEF from March 2020 forecasted that green hydrogen prices could become cheaper than natural gas by 2050 in Brazil, China, India, Germany and Scandinavia but it conceded that many barriers would have to be overcome to get there. For example, hydrogen has to be manufactured making it more expensive than fossil fuels without government policy support and its, “lower energy density also makes it more expensive to handle.”

The three recent examples with respect to the cement industry are interesting because they are all exploring different directions. The Lafarge partnership in Austria wants to use hydrogen to aid the utilisation side of its carbon capture at a cement plant. The industrial suppliers, meanwhile, are positioning themselves in the equipment space for the technology required to use hydrogen on industrial plants. Secondly, ThyssenKrupp has alkaline water electrolysis technology that it says it has used at over 600 projects and electrochemical plants worldwide. Air Products works with industrial gas production, storage and handling.

Finally, the Hanson project in the UK will actually look at using hydrogen as a partial replacement for natural gas in the kiln combustion system. A Cembureau position paper in mid-2019 identified that the challenges to explore in using hydrogen in cement production included seeing how its use might affect the physical aspects of the kiln system, the fuel mass flows, temperature profile, heat transfer and the safety considerations for the plant. Later that year a feasibility study by the Mineral Products Association (MPA), Verein Deutscher Zementwerke (VDZ) and Cinar for the UK government department that is funding the Hanson project concluded that a hydrogen flame’s high heat in a burner alone might not make it suitable for clinker formation. However, the study did think that it could be used with biomass to address some of that alternative fuel’s “calorific limitations” at high levels. Hence the demonstration of a mixture of both hydrogen and biomass.

That’s all on hydrogen but, finally, if you didn’t log into yesterday’s Virtual Global CemProducer 2 Conference you missed a treat. One highlight was consultant John Kline’s presentation on using drones to inspect refractory in some hard to reach places. Flying a camera straight into a (cool) pyro-processing line was reminiscent of a science fiction film! Global Cement has encountered the deployment of unmanned aerial vehicles in quarry and stockpile surveys previously but this was a step beyond.

The proceedings pack - including video, presenter slides and delegate list - for the Virtual Global CemProducer 2 Conference 2020 is available to buy now

UK: Germany-based Loesche has joined a network of expert companies that “share relevant information and results regarding the reduction of environmental impact and the use of coal and enhanced energy security globally” in becoming an IEA Clean Coal Centre knowledge partner. The company said, “We are excited to be part of this renowned group of companies that aim to improve the environmental impact by use of green technologies, renewable resources, and alternative use of energy sources for more sustainable engineering projects.”

UK: The Global Cement and Concrete Research Network (Innovandi) has launched a week of online workshops dedicated to lowering cement and concrete’s carbon footprint through research and development, with the participation of 30 companies and 40 scientific institutions.

Global Cement and Concrete Association cement director Claude Loréa said, “Cement is fundamentally important to our world today and will play a crucial role in building the sustainable world of tomorrow. It is therefore critical to support and accelerate the breakthrough processes and products that will improve sustainability and decrease carbon emissions. The Innovandi Kick-off Week offers a platform for leaders from across the world of cement and concrete to collaborate with academic institutions and define the cutting-edge research that will address these challenges and help us create a better future.”

India: Odisha has received its first cement-free road near Amanapada, Cuttack District. The Pioneer newspaper has reported that researchers from the Kalinga Institute of Industrial Technology (KIIT) developed the new material, made from 100% industrial waste, in order to cut the CO₂ emissions involved in cement production and in anticipation of an acute limestone shortage in India in 25 – 50 years. KIIT founder Achyuta Samanta thanked the students whose work brought this pilot project to fruition. “The new technology has the potential to bring about a revolution in engineering construction,” he said.

Germany: Lubricants specialist Fuchs has announced its collaboration with chemicals company BASF in performing a cradle-to-grave analysis of different mineral oil hydraulic fluids that takes into account all environmental and economic aspects of their lifecycle. The study concluded that high performance multigrade hydraulic oil (HVLP) has a lower environmental impact and lower overall cost than monograde hydraulic oil (HLP). Fuchs said, “This advantage is mainly based on an improved diesel fuel economy throughout the use phase - primarily due to improved volumetric fluid efficiency, lower friction and lower fluid mass circulation ratio.”

Fuchs and BASF both supply lubricants and chemical products to the cement industry.

Germany: HeidelbergCement’s profit was Euro1.24bn in 2019, down by 3.4% from Euro1.23bn in 2018. Its revenue grew by 4.3% to Euro18.9bn from Euro18.1bn. HeidelbergCement says that it reduced its specific net CO₂ emissions by 1.5% year-on-year to 590kg/t from 599kg/t in 2018 and ‘intensified its research and development (R&D) efforts on carbon capture and utilisation/storage (CCU/S)’ in every operating region globally.

The group announced a year-on-year increase in volumes in the first two months of 2020, with all but three of its plants (HeidelbergCement subsidiary Italcementi’s 2.8Mt/yr Calusco plant, 2.5Mt/yr Rezzato plant and 0.6Mt/yr Tavernola plant in Lombardy region, Italy) still operating through the coronavirus pandemic, though it noted that construction is slowing in the US, Australia and Western Europe due to the outbreak.

HeidelbergCement cancelled its 7 May 2020 annual general meeting (AGM) ‘due to the spread of the coronavirus.’