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Displaying items by tag: Environment
France: On 20 June 2013 France-based cement producer Vicat announced that it had begun 10 days of trials at its Créchy cement plant in Allier with the aim of producing a new, low-CO2 type of cement known as ALPENAT®.
The trials, which aim to produce 10,000t of ALPENAT, are a first step towards full industrial production following years of research by Vicat into lower-CO2 cements. It is claimed that ALPENAT has embodied CO2 levels that are 30% lower than that of conventional cement.
While Vicat is currently keeping chemical and technical specifics out of the public domain, it reports that ALPENAT achieves its lower CO2 emissions via two methods. It reports that it has: 1. Reduced the temperature required in the kiln and; 2. Reduced the levels of limestone included in the cement raw mix, which reduces the CO2 released in the decarbonation step.
In addition to its good environmental credentials, ALPENAT is also presented by Vicat as a high-performance cement. It allows faster setting, an increase in resistance at seven and 28 days compared to OPC in the same strength class (42.5 or 52.5) and improved durability. It has already proven its strength over two years at the Vicat Montalieu cement plant, where a ramp for 100t dumper trucks has been constructed out of concrete made from ALPENAT.
Vicat says that the research that led to ALPENAT was made possible by its focus on research and development, mainly at its Isle d'Abeau laboratories.
The Vicat announcement about ALPENAT comes hot on the heels of trials conducted by Lafarge, which recently presented details of its Aether® cement clinker to the cement industry. This belite-based cement was featured in the May 2013 issue of Global Cement Magazine.
Cemex to step up Egyptian environmental performance
05 June 2013Egpyt: The Mexican cement giant Cemex has said it plans to invest US$100m to expand its operations in Egypt. The planned investments were discussed in a meeting between Sergio Menendez, President of Cemex in Egypt, and Yehia Hamed, Egyptian Minister of Investment.
The investment will allow Cemex to 'significantly improve its operations in Egypt and continue supporting the country's housing, commercial and infrastructure development, according to the company.
New environmental equipment will be installed to reduce emissions of pollutants and increase the use of alternative fuels. "Cemex is constantly providing industry-leading building solutions that help improve the well-being of the people of Egypt," said Menendez. "This investment is expected to support the sustainable development of Egypt for many generations."
Cemex said that more than 250,000t of waste have been processed into alternative fuels in Egypt since 2000. "In 2010 Cemex inaugurated a new US$12m dust filter equipped with the latest technology to reduce emissions in its Assiut cement plant," said Cemex.
China to cut nitrogen oxide emissions to 450mg
24 May 2013China: A new standard for nitrogen oxide (NOx) emissions from cement plants drafted by the Ministry of Environmental Protection is expected to be issued on 1 July 2013, according to the China Securities Journal.
The new standard will cut the amount of NOx emitted by an existing cement plant to below 450mg for every normal cubic meter of cement produced. Currently on average Chinese cement producers emit 880mg of NOx. For those new cement production lines, the emission standard will be capped below 320mg. The drafted requirement is stricter than market expectations for the cap to be set at 500mg.
The Chinese cement industry produces about 11.6% of all NOx emissions across China's industrial sectors. It has been targeted in move to address air pollution, particularly after hazardous smog levels were reported since the start of 2013. In 2011, the Sichuan provincial government said power would be cut for cement plants that fail to achieve the NOx emissions target set by the provincial government for the 2011 - 2015 period.
Slovenia: Lafarge Cement plans to try again to obtain an environmental permit for a highly disputed waste-burning furnace at its Trbovlje plant, local media has reported. The move follows the second time Lafarge's request was rejected by Slovenia's Environment Agency in March 2013.
Cuban plant to go green
05 April 2013Cuba: A Cuban cement plant has launched industrial trials to produce environmentally-friendly cement, according to the National News Agency.
Gustavo Suarez, director of the Siguaney cement plant in central Cuba reported that the kilns began to burn local kaolin minerals to partially replace the CO2-intensive clinker used to make cement on 4 April 2013. Suarez said the production phase was preceded by a year and a half of testing by researchers at Las Villas University and the University of Lausanne, Switzerland, a partner in the project.
The factory is preparing the first 300t of burnt metakaolin needed to make two experimental types of 'green cement,' in which clinker will be replaced by 15% and 45% kaolin respectively. It is estimated that Siguaney will consume only 68% of the energy used in making normal cement, reducing greenhouse gas emissions by 32%. "(Our) current grey cement production requires a temperature of 1200°C, while the new local formula needs only 750°C," said Suarez.
Jaiprakash Associates ‘unable’ to pay US$18.8m power plant fine
06 February 2013India: Major Indian cement producer Jaiprakash Associates has informed the Supreme Court of India that it is unable to pay a US$18.8m fine imposed by the Himachal Pradesh High Court for setting up a captive thermal power plant without gaining the required environmental clearance.
The Jaypee group firm said that it is in 'great difficulty' and can't arrange funds to pay its second instalment of US$4.7m that is due on 31 March 2013. However, it said it had paid the first instalment of the same amount. A bench headed by chief justice Altamas Kabir agreed for an early hearing on 12 March 2013 even though the environment ministry and the state government opposed the plea, saying that there is no way for Jaiprakash Associates to avoid the US$18.8m fine.
On 4 May 2012 the High Court ordered the Jaiprakash Associates to dismantle its 60MW captive power plant within three months. It allowed the 1.75Mt/yr cement plant in Solan to stay. In November 2012 Jaiprakash Associates reported that its net profit for the six months to 30 September 2012 had dropped by nearly 40% to US$50.1m from US$81.3 in the same period in 2011.
Environmentalists could sue over EPA cement standards
07 January 2013US: Washington-based news agency InsideEPA has reported that environmentalists may be preparing to sue the US Environmental Protection Agency (EPA) over its revised emissions limits for the cement sector because the rules largely adopt weaker limits and extended compliance deadlines that had been sought by the industry. The agency says that critics warn that the ruling will create more toxic air emissions and criteria pollutant emissions that pose significant risks to public health.
"By the EPA's own numbers, that delay will cause between 1920 and 5000 Americans to die prematurely from exposure to cement plants' soot pollution. The rules will also allow cement plants to pump an additional 15,000kg of mercury into the environment," said one environmentalist quoted by Inside EPA, citing the EPA's data.
The EPA had faced a 20 December 2012 consent decree deadline to issue the rules, which revise its national emission standards for hazardous air pollutants (NESHAP) air toxics limits and new source performance standards (NSPS) criteria pollutant controls for the sector. The rules address a cement sector push for reconsideration of the NESHAP and NSPS as set in 2010, in addition to a federal appeals court ruling partly remanding the 2010 rulemaking to EPA.
In June 2012 the EPA proposed to revise the rules by weakening the particulate matter (PM) limit for new and existing kilns. It also proposed to extend the compliance deadline for the air toxics standards from 2013 to 9 September 2015. Both measures were sought by the cement sector, which argued that the 2010 rules were too stringent.
Environmental groups, including Earthjustice and the Natural Resources Defense Council, filed comments criticising the proposal as unlawfully weak under the Clean Air Act, and opposing the changes.
It now looks likely that the revised cement rules will prompt a lawsuit from these and other environmental groups given their warnings in written comments that the proposed version was unlawful under the Clean Air Act.
In contrast, the Portland Cement Association (PCA) President Greg Scott has welcomed the rules, saying that they, "Will provide PCA members and the cement industry the additional time needed for compliance with the revised standards. Such time is essential to properly complete the planning, engineering, permitting, testing and construction of the various new technologies that will be necessary to implement the revised standards."
He added that the rules, while now achievable, were still 'extremely challenging.' mitigating fears that the industry could sue over their implementation.
TCC to upgrade plants for tougher NOx regulations in China
26 September 2012China/Taiwan: Two cement producers from Taiwan have reacted to potential new Chinese environmental regulations. Taiwan Cement (TCC) has announced plans to invest US$23.3m on upgrading equipment for denitrogenation and desulphurisation at its Chinese plants. Asia Cement is reportedly also evaluating similar upgrades.
Industry reports suggest that the Chinese government will likely set nitrogen oxide emissions to 300mg/m3, a level below the international standard of 400mg/m3. Upgraded equipment to meet such tougher standard costs about US$3.33m per set, which may create losses for many cement producers in China.
Only four producers out of 3000 in China currently have denitrogenation and desulphurisation processing equipment, with two based in Xiangtan, Hunan Province and another two based in Chengdu, Sichuan Province. About one third of cement makers will be unable to afford the upgrades required to meet the new regulations.
A representative of TCC said that its subsidiary Taiwan Cement International Holdings has started installing new equipment in its plant in Chongqing, aiming to decrease 60% of nitrogen oxide emissions, with similar upgrades in progress at plants in Guizhou and elsewhere.
Environmental warnings issued to Pakistani producers
06 August 2012Pakistan: The Environment Protection Department (EPD) issued notices to eight cement factories across the Punjab region during the week ending 3 August 2012 for failing to install devices to mitigate dust pollution levels.
The notices were served under Section 12 and Section 16 of the Punjab Environment Protection Act 2012 after a month-long survey. This was initiated after three cement factories in Chakwal, DG Khan Cements, Bestway Cements and Pakistan Cements, were found not to be using electrostatic precipitators (EP), air bags and other devices, despite having installed power generators to keep them operational.
Dandoot Cement Factory in Jhelum, Gharibwal Cements in Chakwal, Maple Leaf Cements in Mianwali and Pioneer in Khushaab have also been issued notices for not installing EPs. Fauji Cements in Attock has been issued a notice for mishandling raw materials. Bestway Cement was also given a notice for drawing too much water from communal wells. A case involving Flying Cements was forwarded to the Environment Tribunal after the factory management did not respond to several notices issued for not taking any measures to mitigate its dust emissions.
EPD spokesman Naseemur Rahman Shah said that the only way these factories could mitigate dust emissions was to install their own power plants so that EPs were not reliant on external power sources. EPs can trip out when external power provisions fail, even for a short while, and can take up to 20 minutes to restart operation.
Bowmanville officially receives ISO 500001
08 June 2012Canada: Politicians and community leaders were on hand yesterday to celebrate the fact that St Marys Cement's Bowmanville Plant has received North America's first International Organisation for Standardisation's (ISO) ISO 50001 certification.
Erik Madsen, CEO of St Marys Cement Inc. accepted the certificate at a ceremony at the plant. The award presentation was made by Michael Delisle, CEO of International Certification Services Inc. (ICS). Although the ceremony was official recognition of the plant had achieved certification the company was officially registered as the first North American recipient of ISO 50001 on 15 November 2011.
Upon receiving the Certificate, Madsen observed, "St Marys identified the benefits and embraced the certification process early. The ISO 50001 programme and cement plants are a logical fit. Our Bowmanville plant has a rated capacity of over 1.8Mt/yr of product, operates 24/7 and consumes significant amounts of energy. Managing these energy costs is a no brainer. it is good for the environment and our bottom line."
Fabio Garcia, Operations Manager at the Bowmanville Plant, told ceremony attendees, "Receiving this prestigious certification was not something that happened overnight. The origins of this certification can be traced back to 2005 when we were given the green light by senior management to move forward with an integrated strategy to reduce the plant's energy consumption. This quickly became an initiative supported and made possible by all of our employees."
CEO Madsen concluded, "The commitment to energy conservation, and the continual desire to improve processes by the entire staff at our Bowmanville plant, is the reason that this is the first North American site to receive ISO 50001 certification. The energy conservation elements of ISO 50001 certification means we are on track for over US$1m in savings in 2012 alone. I want to thank each and every one of our employees, who helped to make this possible."