Cement News tagged under: CO2 emissions

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Bringing on the substitutes

18 July 2018, Published under Cement News

As part of its drive to reduce its CO 2 emissions, Votorantim Cimentos is using a range of clinker substitutes to lower its clinker-to-cement ratio. As a result, around 86 per cent of its product portfolio in Brazil has a reduced carbon footprint, lowering its impact on the environment. By Silvia R S S Vieira, Votorantim Cimentos, Brazil. The use of substitute materials such as acidic slags (pictured: maganese slag) and calcined clay is key to reducing a cement plant’s carbon foot...

LC3: a promising alternative

16 July 2018, Published under Cement News

The drive for a sustainable construction industry has triggered the development of a range of building materials that serve as sustainable alternatives to Portland cement. The development of limestone calcined clay cements (LC 3 ) offers a glimpse into the future of building materials. By Karen Scrivener, Franco Zunino, François Avet and Wilasinee Hangpongpun, EPFL STI IMX LMC, Switzerland, and Anne Dekeukelaere and Laurent Grimmeissen, Cementis Consulting, Switzerland. Figure 1: SE m...

Materials & quality: 30 years on

10 July 2018, Published under Cement News

The development of new cement types and demands on fuels as well as changes in process requirements have led to key changes in cement production over the last three decades. New raw materials and alternative fuels have given rise to new cement standards. Alternative raw materials increasingly reduce the need for virgin materials The cement Industry in 2018 has been through a long period of soul searching and reorganisation which has involved multiple changes in ownership and adj...

Sustainability 2050

09 July 2018, Published under Cement News

Since its inception 20 years ago, the Cement Sustainability Initiative (CSI) has proactively identified, analysed and managed the key issues at stake for the sector. By developing global Key Performance Indicators (KPIs), common reporting methodologies and guidance documents, the CSI has enabled the global cement industry to rapidly enhance its sustainability performance. In this report, the CSI presents the revised 2018 technology roadmap setting out an action plan for the industry to 2050....

2048 predicted

04 July 2018, Published under Cement News

The 30th anniversary of the first publication of International Cement Review (ICR) in July 1988 has arrived. While last month’s Technical Forum considered the major changes in the world cement industry over the past 30 years of ICR, this issue will look at what changes might be anticipated over the next 30 years. There is no alternative to cement for constructing the world’s required infrastructure Last month’s review of the last 30 years of ICR was based around three threads. T...

Alternative fuels in a nutshell

29 June 2018, Published under Cement News

Since April 2015 Binh Phuoc Cement has partly replaced the fuel supply at its coal-fired cement plant with cashew nut shells in a project that not only makes operations at the plant more sustainable, but also helps the Vietnamese province dispose of a key agricultural waste. By Ha Tien 1 Cement JSC, Vietnam. Binh Phuoc Cement is helping Vietnam’s largest cashew processing province dispose of some 60 per cent of its cashew nut shell waste Part of Ha Tien 1 Cement Joint Stock C...

Burning used tyres

24 May 2018, Published under Cement News

One way of reducing the fossil fuel requirement in clinker production is through the use of alternative fuels (AFs). Walter Materials handling, part of the ATS Group, looks at one plant that has invested in the burning of end-of-life tyres to reduce its thermal energy costs, lower its CO 2 emissions and tackle tyre disposal issues. By Basri Ogut, Walter Materials handling, France. LafargeHolcim invested in an end-of-life tyre project at its Martres-Tolosane plant in France ...

CDP report claims producers still need to vastly reduce CO2 levels

10 April 2018, Published under Cement News

A new report by the Carbon Disclosure Project (CDP) entitled 'Building Pressure', which analyses 13 of the world's largest publicly-listed cement companies, reveals that they need to more than double their emissions reductions if they are to limit global warming to below 2˚C, as agreed in the Paris Climate Deal. The companies analysed in the report have a total market capitalisation of US$150bn and represent 16 per cent of global cement production. The CDP has assessed companies across fo...

MPA report highlights CO2 emissions fall for UK cement producers

02 February 2018, Published under Cement News

The Mineral Products Association (MPA) reports that carbon dioxide emissions per tonne of cement fell by two per cent between 2016-17 in the UK. However, for aggregates and asphalt production CO 2 emissions incresed in the country, while readymix concrete production saw a decline in emissions. The data collected forms part of the MPA's Sustainable Development Summary data which was recently launched. Commenting on the information, MPA Chief Executive, Nigel Jackson, said: "The MPA support...

Not simply calcining

10 January 2018, Published under Cement News

While the primary purpose of the calciner in a cement plant is to aid decomposition of calcite from the preheated raw meal, the need to lower CO 2 emissions and the introduction of alternative fuels has broadened the range of requirements that modern-day calciners need to address. By Dr Heiko Schürmann and Norbert Streit, KHD-Humboldt Wedag GmbH, Germany. Figure 1: the main purpose of the calciner is to decompose calcite from the preheated raw meal, which is the most energy-intens...