Cement News tagged under: environment
Challenges and opportunities29 June 2015, Published under Cement NewsWith limited fossil fuel reserves suitable for cement production, India is seeking to increase its use of alternative fuels. In this undertaking, the country faces significant and wide-ranging challenges. However, the past few years have seen varied opportunities open up for cement producers to improve their substitution rates. Figure 1: major concentrations of cement plants in India The Indian subcontinent presents its cement producers with a unique combination of challenges. T... |
CO2 mineralisation22 April 2015, Published under Cement NewsThe mineralisation of carbon dioxide (CO2) can provide significant environmental benefits in a world where climate change is at the top of the agenda. For the cement industry, it is an option to lower that carbon footprint and supply an aggregate replacement to the concrete sector. This article explains the benefits and challenges faced by industry to turn CO2 mineralisation into a viable option. By John & Charles Kline, Kline Consulting LLC, USA. Figure 1: relative abundance of eleme... |
Carbon trading – state of play09 March 2015, Published under Cement NewsLow prices and generous free allowances have meant that the cement and lime industry has been relatively unfazed by the European Emissions Trading Scheme (EU ETS). Is this about to change? By Philipp Ruf, ICIS Tschach Solutions, UK. Figure 1: post-2013 carbon price development in terms of EUA price Go around the table at the board meeting of many cement and lime producers, and ask about their strategy for dealing with the European Emissions Trading Scheme (EU ETS). You’ll likely... |
Out of aluminium waste23 February 2015, Published under Cement NewsTo reduce natural raw material use, the cement industry is increasingly considering byproducts from other industrial processes such as spent pot liners supplied by the aluminium industry. However, these often need to be refined to adapt them to the demands of the end-product. By Dr Yves C Zimmermann, Regain Services Pty Ltd, Australia. Figure 1: molar alkali-sulphur balance in Portland cement clinker Refined byproducts derived from the primary aluminium industry’s spent pot lini... |
Closing the recovery gap18 February 2015, Published under Cement NewsAs the pursuit for better waste management practices in developing countries continues by overcoming barriers and changing mindsets, Geocycle Indonesia is playing its part in closing the country’s waste recovery gap. The company’s new 160,000tpa GreenZone waste-to-fuel processing facility near Jakarta will be the largest unit of its kind in southeast Asia and add much-needed capacity to Indonesia’s industrial waste management infrastructure. By Dr Vincent Aloysius, Geocycle Indonesia. ... |
Scaling up MSW models10 December 2014, Published under Cement NewsThe effective management and disposal of municipal solid wastes (MSW) in India has become a major concern. Forecast rapid urbanisation, uncontrolled population growth and rising per capita income are expected to exacerbate the issue. As a result, the co-processing of MSW in cement kilns is becoming an increasingly-attractive option. Figure 1: share of major Indian states in MSW generation The significance of the MSW management and disposal issue is underlined by India’s Prime Mi... |
NOx reduction at Vidal Ramos05 December 2014, Published under Cement NewsTo lower NOx emissions Votorantim Cimentos decided to install SNCR equipment as well as implement alternative fuels (AF) use at its Vidal Ramos plant, Brazil. This required the optimisation of the urea injection system to ensure the lowest-possible consumption of the reducing agent before and after the introduction of the AFs. By Mario Henrique Interlenghi & Carlos Roberto Moreira da Cunha, Votorantim Cimentos, Brazil. Votorantim Cimentos’ greenfield Vidal Ramos plant in Brazil has op... |
Ras Al Khaimah-based cement company sees temporary environmental shutdown20 October 2014, Published under Cement NewsThe UAE Ministry of Water and Environment has closed a Ras Al Khaimah cement factory in Khor Khuweir for a month. The plant has not complied with rules under Cabinet Resolution No 24 of 2011, relating to the protection and development of the environment. Ministry spokesmen Ghanem Al Shamsi said the decision came after specialists from the external audit department visited the facility and reported a number of violations, according to local newspaper The National. |
Best-practice APC selection15 October 2014, Published under Cement NewsUnforeseen shutdowns in air pollution control systems (APC) can be the result of insufficient process knowledge and lack of understanding of individual plant requirements. Moreover, increased dust emission due to low-quality or inadequately-designed APC equipment not only impacts a cement plant’s environmental footprint but can also cause extensive wear on other equipment, such as filter fans, which increases overall maintenance and operational costs. By Ahsen Hussain, FLSmidth, Denmark. ... |
UltraTech Cement's power provisions16 September 2014, Published under Cement NewsIn India, finish grinding typically consumes around 40 per cent of power while raw material preparation and clinker burning account for an additional 30 per cent. Therefore, an uninterrupted power supply is key to the smooth operation of any cement plant. To ensure such a supply, UltraTech Cement has recently commissioned captive power units at its Rawan, Rajashree and Andhra Pradesh works and is expanding its power provision with other forms of clean energy. By UltraTech Cement, India. ... |