Displaying items by tag: Portugal

Angola: Portugal-based IPIAC has won a contract to upgrade the Cimangola plant in Luanda region to use Limestone Calcined Clay (LC3). The project will be the first in the world to convert an existing clinker production line into a clay calciner. Switzerland-based Ecosolutions conducted a study of raw materials and sustainability issues prior to the signing of the contract. The project will be coordinated and supervised by Portugal-based Techbelt. Once completed the plant will produce 0.3Mt/yr of calcined clay, which can be used to manufacture up to 1Mt/yr of LC3 cement.

Honduras: Argos Honduras is set to start a new hydrogen injection process at its integrated Piedras Azules cement plant. During the process, water molecules are split using electricity into hydrogen and oxygen and then injected into the kiln through the main burner. The main objective of this technology is to reduce the use of fossil fuels, CO₂ emissions levels and energy consumption at the plant.

Luis Eduardo Tovar, the manager of Argos Honduras, said “We are proud to be committed to innovation and new technologies that allow us to keep our operation at the forefront of the industry. This project has allowed us to reduce our C0₂ emissions and optimise our processes to become increasingly efficient."

A pilot was previously conducted in conjunction with Portugal-based UTIS. It showed that by using the technology the plant could increase its clinker production and reduce petcoke consumption.

From the Nordics to the Mediterranean, European countries lead the field in reduced-clinker cement production using supplementary cementitious materials (SCMs). While consumers, faced with ever-greater choice, continue to opt for sustainability, projects to improve existing SCMs and develop new ones have won government backing and have become a matter of serious investment for other heavy industries beside cement. European cement producers’ decisions are steering the course to a world beyond CEM I. Yet, even in Europe, great untapped potential remains.

Companies generated a good deal of marketing buzz around their latest reduced-CO₂ cement ranges in 2021 and the first quarter of 2022: Buzzi Unicem’s CGreen in Germany and Italy, Holcim’s EcoPlanet in six markets from Romania to Spain, Cementir Holding’s Futurecem in Denmark and Benelux, and Cemex’s Vertua in Spain and several other countries. All boast reduced clinker factors through the use of alternative raw materials. This, however, is really a rebranding of a long-established norm in Europe.

Since 2010, cements other than CEM I have constituted over 75% of average annual cement deliveries across Cembureau member countries (all cement-producing EU member states, plus Norway, Serbia, Switzerland, Turkey, the UK and Ukraine). This statistic breaks down differently from country to country. CEM II is the norm in Austria, Finland, Portugal and Switzerland, with deliveries in the region of 90%. Portland limestone cement (PLC) makes up a majority of deliveries in all four. It has been central to Switzerland’s transition to 89% (3.72Mt) of CEM II deliveries out of a total 4.18Mt of cement despatched in 2021. There, the main types of cement were CEM II/B-M (T-LL) Portland composite cement, with 1.38Mt (33%), and two different classifications of PLC: CEM II/A-LL PLC, with 1.28Mt (31%), and CEM II/B-LL PLC, with 888,000t (21%).

A second approach is that of the Netherlands, where CEM III blast furnace slag cement with a clinker factor below 65% predominates, favoured for its sulphate resistance and the protection it offers against chloride-initiated corrosion of steel reinforcement in marine settings. By contrast, the UK has traditionally maintained a higher reliance on CEM I cement. This can be partly explained by the preference of builders there for adding fly ash or ground granulated blast furnace slag (GGBFS) at the mixing stage. Nonetheless, CEM II Portland fly ash cement held a 14% (1.43Mt) market share in the UK’s 10.2Mt of cement consumption in 2021.

The UK Mineral Products Association (MPA) has identified limestone as an underutilised resource in the country’s cement production. Together with HeidelbergCement subsidiary Hanson Cement, it has applied for a change to National Application standards to allow the production of Portland composite cement from fly ash and limestone or GGBFS and limestone. The association has forecast that Portland composite cement could easily rise to 30 – 40% of UK cement consumption, and that this has the potential to eliminate 8% of the sector’s 7.8Mt/yr-worth of CO₂ emissions.

Metallurgical waste streams have long flowed into European cement production, primarily as GGBFS, but also as bauxite residue. In 2021, alumina production in the EU alone generated 7Mt of bauxite residue, of which the bloc recycled just 100,000t (1.4%) that year. Two projects – the Holcim Innovation Center-led ReActiv project and Titan Cement and others’ REDMUD project – aim to produce new alternative cementitious materials from bauxite residue.

By collaborating with other industries, cement producers’ investments can most effectively reduce the overall cost of using these materials in cement production. In Germany, HeidelbergCement and ThyssenKrupp’s Save CO₂ project aims to develop new improved latent hydraulic binders or alternative pozzolan from GGBFS by producing slag from directly reduced iron (DRI). The Save CO₂ team believes that GGBFS substitution for clinker has the capacity to eliminite 200Mt/yr of CO₂ emissions from global cement production.

Meanwhile in the world of mining, ThyssenKrupp and others’ NEMO project is investigating the recovery of a useable mineral fraction for cement production from the extractive waste of the Luikonlahti and Sotkamo mines in Finland and the Tara mine in Ireland, through bioleaching and cleaned mineral residue upcycling. This may give cement producers full access to Europe’s 28Bnt stockpiles of sulphidic mining waste, of which mines generate an additional 600Mt each year.

Denmark-based CemGreen, which produces the calcined clay supplementary cementitious material CemShale, is developing a shale granule heat-treating technology called CemTower. This consists of three pieces of equipment vertically integrated into cement plants’ preheaters, kilns and coolers, and brings the processing of waste materials – here oil shale – to the cement plant.

Lastly, cement producers are exploring the possible uses of waste made of cement itself. In Wallonia, HeidelbergCement subsidiary CBR’s CosmoCem project is investigating the production of alternative cement additives from large available flows of local demolition, soil remediation and industrial waste. Similarly, the Greece-based C2inCO₂ project seeks to mineralise fines from concrete recycling for HeidelbergCement to use in the production of novel cements in its Greek operations.

In Switzerland, ZND Portland composite cement (produced using fine mixed granulate from building demolitions) is the third largest cement type, with 178,000t (4.3%) of total deliveries – narrowly behind CEM I with 239,000t (5.7%).Holcim Schweiz developed its Susteno 4 ZND Portland composite cement with Switzerland’s lack of any ash or slag supply in mind, demonstrating the potential flexibility of a circular economic approach to cement production.

On 21 March 2022, the University of Trier reported that it is in the process of mapping mineral resources, waste deposits and usable residues ‘on a cross-border scale,’ in an effort to produce new materials for use in cement production. Industry participants include France-based Vicat, CBR, Buzzi Unicem subsidiary Cimalux and CRH subsidiary Eqiom. Vicat is preparing a kiln at its 1Mt/yr Xeuilley cement plant in Meurthe-et-Moselle to use in testing new alternative raw materials developed under the project.

For Cembureau and its members, work continues, with the goal of Net Zero by 2050 constantly in sight. This goal includes a reduction in members’ clinker-to-cement ratios to well below 65%. In this, the association and its members are working towards a world not just beyond CEM I, but beyond CEM II, too. What exactly this will mean remains to be seen.

Sources

CemSuisse, ‘Lieferstatistik,’ 11 January 2022, https://www.cemsuisse.ch/app/uploads/2022/01/Lieferstatistik-4.-Quartal-2021.pdf

WSA, ‘December 2021 crude steel production and 2021 global crude steel production totals,’ 25 January 2022, https://worldsteel.org/media-centre/press-releases/2022/december-2021-crude-steel-production-and-2021-global-totals/

MPA, ‘Low carbon multi-component cements for UK concrete applications,’ July 2018, https://prod-drupal-files.storage.googleapis.com/documents/resource/public/Low%20carbon%20multi-component%20cements%20for%20UK%20concrete%20applications%20PDF.pdf

European Commission, ‘European Training Network for Zero-waste Valorisation of Bauxite Residue (Red Mud),’ 16 July 2020, https://cordis.europa.eu/project/id/636876

European Commission, ‘Industrial Residue Activation for sustainable cement production,’ 16 February 2022, https://cordis.europa.eu/project/id/958208

Recycling Portal, Zement der Zukunft – Forschungsprojekt „SAVE CO₂“ gestartet, 28 May 2021, https://recyclingportal.eu/Archive/65677

h2020-NEMO, ‘Project,’ https://h2020-nemo.eu/project-2/

European Commission, ‘Green cement of the future: CemShale + CemTower,’ 14 April 2021, https://cordis.europa.eu/project/id/101009382

CosmoCem, ‘Communiqué de Presse,’ https://cosmocem.org/

CO₂ Win, ‘C²inCO₂: Calcium Carbonation for industrial use of CO₂,’ https://co2-utilization.net/en/projects/co2-mineralization/c2inco2/

Les Echos, ‘Rendre le ciment moins gourmand en CO₂,’ 21 March 2022, https://www.lesechos.fr/pme-regions/innovateurs/des-substituts-au-clinker-rendent-le-ciment-moins-gourmand-en-co2-1395002

Portugal: Cimpor is participating in a consortium, led by power company Rega Energy, which plans to invest Euro100m in developing scalable green hydrogen production plant technologies. The consortium will deploy infrastructure for its upcoming Vale Hidrogénio Verde Nazaré (NGHV) green hydrogen plant by 2023, including a dedicated 40MW solar-powered electricity grid. It will commission its first green hydrogen plant by 2026, creating 140 new jobs. The consortium aims subsequently to scale up the plant to a renewable power consumption of 600MW. It hopes that, when fully commissioned, the NGHV plant will be a reference project for green hydrogen production.

Turkey: OYAK Cement says that it eliminated 200,000t of CO₂ emissions during 2021 through its use of US-based DataRobot’s AI software. The producer said that the technology enabled it to multiply its alternative fuel (AF) substitution rate by seven an reduce its mechanical failure prediction time by 75%. It added that the software contributed to a US$39m/yr drop in costs.

Spain: Cementos Molins has acquired a 100% stake in precast concrete supplier Pretersa Prenavisa for an undisclosed sum. Molins, through its subsidiary Precon, made the purchase from the European investment group Kartesia. It says the transaction will boost its presence and product mix in the precast concrete market in Spain, Portugal, and France.

Pretersa Prenavisa supplies the engineering, design, manufacture, and assembly of precast concrete structures. Its headquarters is based at Teruel and it operates three production plants at Teruel, Jaen and Segovia. It has around 770 employees and reported a turnover of Euro56m in 2020.

Cementos Molins operates in the precast business in Spain through its subsidiary Precon. It operates ten production plants located throughout Spain. The acquisition of Pretersa Prenavisa is Molins’ fifth in 2021. It follows the takeover of Escofet, a concrete design specialist, the acquisition of a white cement plant in Spain from Çimsa group, the acquisition of Calucem, a calcium aluminate cement producer, and the acquisition of the aggregates and ready-mix concrete businesses of HeildelbergCement in Catalonia.

Portugal: Cimpor has announced plans for the establishment of 1MW solar power plants at each of its three cement plants in Portugal. The Dinheiro Vivo newspaper has reported that the measure comes under a planned Euro130m investment package in upgrades to its cement operations before 2030. The plans include the expansion of the solar power plants to a total capacity of 10MW by 2025. Additionally, the producer will install two waste heat recovery (WHR) plants with a combined capacity of 8MW at its Alhandra and Souselas cement plants. The company is aiming to reduce its indirect CO₂ emissions by 30%. It also has an alternative fuel (AF) substitution rate target of 70% by 2030 - compared to 3% in 2020, when it used 150,000t of AF.

Cimpor has previously invested a total of Euro7.2m in dedicated sustainability-related measures.

Portugal: Semapa subsidiary Secil is spending Euro86m on modernising its Outão cement plant in Setúbal. The Dinheiro Vivo has reported that the work will turn the facility into ‘the most sustainable cement plant in Europe,’ according to the company. It will reduce CO₂ emissions by 20%, end fossil fuel use and establish waste heat recovery to supply 30% of the plant’s electrical power needs. The government has granted the ‘Project of National Interest’ Euro14.5m in funding. The project will also expand the cement plant’s capacity by 30% to 1.3Mt from 1.0Mt.

Chief executive officer Carlos Abreu said "We have the ambition of reaching carbon neutrality in 2050 and this project is a step in that direction. Others will follow." He added "The Asian and American blocs are not always facing that direction, but the path is made by walking... and we will get there." Regarding the timing of the project, Abreu said "Secil was a very brave company here. The project was decided in 2019 before the pandemic broke out... We kept it, despite the fact that knowing that the pandemic was going to be, and is being, very difficult, but we believe that we had no other alternative."

The latest piece of China-based Huaxin Cement’s global ambitions slotted into place this week with the news that it is preparing to buy plants in Zambia and Malawi. Its board of directors has approved plans to spend US$150m towards acquiring a 75% stake in Lafarge Zambia and US$10m on a 100% stake in Lafarge Cement Malawi. The move will gain it two integrated plants with a combined production capacity of 1.5Mt/yr in Zambia, and a 0.25Mt/yr grinding plant in Malawi.

This latest proposed acquisition represents the next step for Huaxin Cement in Africa following its purchase of African Tanzanian Maweni Limestone from ARM Cement in mid-2020. The company has also been busy along the more traditional Belt and Road Initiative land routes in Asia. It started up the kiln at its new 2Mt/yr Jizzakh cement plant in mid-2020. Elsewhere in Central Asia it runs two plants in Tajikistan and one plant in Kyrgyzstan via various indirectly-owned subsidiaries. While in South Asia it runs a plant in Nepal and in South-East Asia it runs one in Cambodia. If the plans in Zambia and Malawi pay off then it will give the Chinese producer a growing presence in East Africa, with plants in three countries.

The China Cement Association ranked Huaxin Cement as the country’s fifth largest clinker producer in 2021 with an integrated capacity base of just under 63Mt/yr. Domestically, the company operates 57 cement plants and most of these are based in the Yangtze River Economic Belt region. In 2020 it reported cement and clinker sales of 76Mt, a small decrease from 2019. Its operating income fell by 6.6% year-on-year to US$4.58bn and profit dropped by 12% to US$1.2bn. This performance was blamed on the emergence of Covid-19 at the start of 2020 and then floods later in the year.

Compared to the other larger Chinese cement producers, Huaxin Cement roughly appears to be holding rank with its overseas expansions. The leaders, CNBM and Anhui Conch, hold subsidiaries with plants in South-East and Central Asia and CNBM’s engineering wing, Sinoma, has a far bigger reach, building plants all over the place. Information has been scarce since mid-2020 on the long heralded 7Mt/yr plant in Tanzania due to be built by Sinoma and local subsidiary Hengya Cement. At that time local residents in Mtimbwani, Mkinga District were reportedly being compensated for their land. Other than this, one of the other big players internationally is Taiwan Cement. In 2018 it invested around US$1.1bn for a 40% stake in Turkey-based Oyak Cement. As well as a presence in Turkey this also gave it a share of plants in Portugal in 2019 when Oyak completed its acquisition of Cimpor.

Elsewhere this week, carrying some of the themes above with expansion in Central Asia, two new integrated cement plant projects were announced in Kyrgyzstan and Turkmenistan respectively. Meanwhile, Italcementi said it will invest Euro5.0m to restart clinker production at its Trentino cement plant in Sarche di Madruzzo, Italy. The unit has been operating as a grinding plant since 2015. This might be viewed as an unexpected decision considering the high local CO2 price but it shows some level of confidence in the local market by Italcementi and its parent company, HeidelbergCement. The next step will be when or if a European producer decides to build a brand new integrated plant in Italy or elsewhere.

Portugal: Denmark-based FLSmidth has won a contract to supply a chlorine bypass system to Cimpor’s Souselas cement plant. The aim is to eliminate chlorine build-up in the plant’s flue gas after the company increases its refuse-derived fuel (RDF) usage rate to 60%. Work is scheduled to begin in mid-2021, and production will stop until its completion and the commissioning of the installation in early 2022. No value for the order has been disclosed.

Cimpor Cement project manager Paulo Evangelista said, “Investing in the chlorine bypass is a key step on our journey towards reducing our environmental footprint. On top of the obvious incentives to increase our fuel substitution, like lower CO₂ emissions and financial savings, we are experiencing better waste handling infrastructure in the local area. All this has made it an easy choice to make. FLSmidth knows our Souselas site and has been key in delivering a solution that will enable this next phase on our sustainability journey.”