International Cement Review articles tagged under : Environment

18 July 2018

Bringing on the substitutes

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 ...

16 July 2018

LC3: a promising alternative

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 c...

09 July 2018

Sustainability 2050

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 (K...

18 June 2018

Extending quarry life

Although a key part of the cement plant, the quarry has a finite lifetime. Its longevity often depends on which material grades are required and how the faces are worked to quarry such materials. Therefore, a well-de...

Burning used tyres 24 May 2018

Burning used tyres

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 burn...

23 May 2018

Mercury capture optimisation

Activated carbon injection (ACI) has been an effective approach for reducing mercury emissions in various industries. The US power industry, for example, began implementation of ACI around 2014 with the onset of the ...

Actions not words 23 April 2018

Actions not words

Climate change is one of the key issues of our time, but the world is far from achieving the objectives of the Paris Agreement. Like every energy and CO2-intensive sector, the global cement industry is at a crossroad...

28 March 2018

Changing world, changing industry

How much influence do modern-day global trends such as climate change, shifting economic power and urbanisation exert on the cement sector? This article looks at several key megatrends and their impact on decisions f...

21 March 2018

Waste to wealth

Lafarge Africa’s Ewekoro plant, some 50km north of Lagos, in Ogun state, Nigeria, pioneered the use of alternative fuels in the country. The company charts the milestones and looks at the future challenges in transfo...

20 March 2018

Playing its part in Paris

In line with the UN’s Paris Agreement on climate change, HeidelbergCement has published its ‘Sustainability Commitments 2030’, which see the cement producer leading the development of carbon capture, utilisation and ...

11 July 2018

Turkey seeks alternatives

The concept of a circular economy is growing in influence and as a result the cement production process has begun to evolve. As a large-scale cement producer, Turkey shows considerable potential for the adoption of t...

07 December 2017

RDF production and utilisation in India

The production of refuse-derived fuels (RDFs) from municipal solid waste (MSW) offers one solution to address the growing waste issue in countries with increasing populations such as India. At the same time, these RD...

09 November 2017

Tyres: going full circle

Contributing to the circular economy, an innovative tyre-burning initiative at PPC’s De Hoek plant in the Western Cape, South Africa, has successfully demonstrated the viability of burning waste tyres as an alterna...

20 September 2017

The restoration revolution

While current environmental legislation expects the extractive industry to restore its abandoned mining areas back to their former use, it often falls short of detailed steps to achieve this goal. In the last few yea...

16 August 2017

A zero waste solution

The development of new alternative fuel (AF) processing and handling technology has enabled cement producers to improve their fuel substitution rates while providing municipal and other authorities with a sustainable...

21 June 2017

Cooling down refrigerants...in the kiln

The safe disposal of hydrofluorocarbons, present in end-of-service refrigerants, is key in helping to prevent excessive levels of global warming in the future. Cement kilns provide one way of dealing with these harmf...