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News Displaying items by tag: fly ash

Displaying items by tag: fly ash

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University of New South Wales researchers test geopolymer concrete on road

18 June 2019

Australia: Researchers from the University of New South Wales (UNSW) and CRC for Low Carbon Living (CRCLCL) are testing a geopolymer concrete made from fly ash and blast furnace slag on a road in Sydney. A 30m stretch of road is being trialled with 15m of traditional concrete and 15m of a geopolymer concrete. Nine sensors have been positioned under the concrete to monitor and compare how the geopolymer concrete performs. The results from the trial will be used to create the first set of industry guidelines for geopolymer concrete.

“While we’ll monitor the road performance for up to five years, a lot of the data collected in the first three to 12 months of this world-first trial will be used to confirm our models and strengthen our predictions,” said Professor Stephen Foster, Head of the School of Civil and Environmental Engineering at UNSW and the CRCLCL project lead.

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Charah opens plant at the Port of Coeymans

18 January 2019

US: Charah has opened a slag grinding plant at the Port of Coeymans near Albany, New York. The unit uses the company’s proprietary process to grind granulated blast furnace slag (GBFS) to create supplementary cementitious materials (SCMs). The site is accessible by ship, truck and rail and will sell materials to concrete producers in the northeast of the country.

The new plant will also produce slag cement that is marketed under the MultiCem brand. Slag cement will be distributed throughout Charah Solutions’ MultiSource materials network, a nationwide distribution system of more than 30 sourcing locations that provide ready mix concrete (RMX) producers and other customers SCMs, including fly ash and slag cement.

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Lushan Conch prepares for slag and fly ash project

02 October 2018

China: Lushan Conch has completed preparation for a project to use slag and fly ash. The subsidiary of Anhui Conch said that it has completed transport bidding work and had completed an underwriting process to support production usage. The plant is also making arrangements to use synthetic gypsum.

The company surpassed its target of 200,000t for production and sales of cement in September 2018 with 215,300t and 217,700t respectively. 105,800t of the total sales were sold as bulk cement.

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Charah buys SCB International

02 May 2018

US: Charah has purchased SCB International to jointly develop and deploy technologies including fly ash beneficiation and mineral grinding technologies. Its intentions are to target: the beneficiation of fly ash for sale to concrete producers; processing kiln dust to remove mercury for emissions regulations compliance; and grinding granulated blast furnace slag (GBFS) and pozzolan for sale to concrete producers. Charah says that the acquisition will also allow it to more than double the volume of materials available to its customers.

“By leveraging SCB’s diversity of materials available and by benefiting from their experience in sourcing materials overseas, we see great potential in marketing the fly ash beneficiation and grinding technologies to our customers, both utilities and concrete producers,” said Scott Ziegler, Vice President of Ash Sales and Marketing at Charah.

As part of this agreement, Charah has acquired SCB’s proprietary fly ash beneficiation technology which will allow Charah to improve the quality of fly ash produced by electric utilities and to increase Charah’s supply of fly ash to concrete producers in the US. Charah also will deploy grinding technologies for GBFS and pozzolan and will market these supplementary cementitious materials (SCMs) to the manufacturers of concrete products.

Both the ash beneficiation and the mineral grinding technologies will support Charah’s expanding MultiSource fly ash distribution network. The MultiSource fly ash network will help ensure that Charah can provide a steady and reliable supply of SCMs for ready mix concrete producers throughout the US.

Charah provides ash management, fly ash sales and marketing and utility support services for the coal-fired power generation industry. Its services include landfill design, construction, management, operations and closure; fly ash, bottom ash and gypsum sales and marketing; ash pond management and closure; structural fill projects; and power plant support services including limestone supply and flue-gas desulfurisation operations

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Cement Corporation of India signs deal with RINL to set up slag cement plant

17 July 2017

India: The Cement Corporation of India (CCI) has signed a memorandum of understanding with Rashtriya Ispat Nigam Limited (RINL), the owner of the Visakhapatnam Steel Plant to build a 2Mt/yr slag and fly ash cement plant. RINL will provide the blast furnace slag and fly ash for the project. The plant is expected to cost US$23m and it will take 15 months once the deal is finalised.

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Ambuja Cement launches fly ash and slag cement product

04 May 2017

India: Ambuja Cement has launched Ambuja Compocem, a composite cement made from fly ash and slag. The product is being produced at its Chhattisgarh plant and it has been introduced to markets in Bihar and Jharkland. It is being marketed to all market segments including individual house builders, real estate developers and infrastructure projects.

“With the launch of Ambuja Compocem, we have achieved a three pronged sustainability approach by conserving natural resources, creating a greener product and fulfilling customer needs for a superior performance product. We call this approach delivering true value,” said Ambuja Cement’s managing director and chief executive officer Ajay Kapur.

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Kiran Global launches environment-friendly cement

28 January 2016

India: Kiran Global Chems has launched Geocement, an environmentally-friendly branded cement. The company claims that the product is stronger than Ordinary Portland Cement and that it does not require water for mixing or curing, according to local media.

Geocement is made from Geopowder and Geobinder, other products also made by Kiran Global Chems. Geopowder uses industrial by-products such as fly ash, rice husk ash, slag, activated clay and alumina. At construction sites it can be mixed with the company's proprietary Geobinder liquid and aggregates to make concrete. The company claims that Geocement does not require water curing and attains maximum strength within seven hours. Kiran Global Chems has also launched Geocrete, a Geocement concrete made with its powder and binder for various industrial applications.

"We have started distributing this to the bulk customers, such as builders and now we are launching the brand for retail. We are planning to sell it through e-commerce," said M S Jain, chairman of Kiran Global Chems. The price of Geocement will be slightly higher than normal cement, but it promises lower finished building cost and less construction time and labour. The company intends to target southern Indian states in 2016.

Kiran Global is also preparing a US$29m expansion programme to set up 12 Geobinder units, 12 Geopowder plants, two precast concrete units and four grinding units across the country. The expansion, is intended to cut logistics cost, will result in 4Mt of capacity with a potential turnover of up to US$300m by the 2018 – 2019 financial year. The company has an in-house research and development centre, accredited by the Union Ministry of Science and Technology, and has been conducting geopolymer research in collaboration with leading research institutes.

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RINL seeks partner for US$472m cement plant in Andhra Pradesh to use slag

24 April 2015

India: Rashtriya Ispat Nigam (RINL) is seeking partners to set up a joint venture 6Mt/yr cement plant in Vizag, Andhra Pradesh at a cost of US$472m. The government-run steel producer is currently in the process of floating a global tender inviting expressions of interest from interested parties.

RINL's interest in the project is to use fly ash and slag generated at its 2.9Mt/yr Visakhapatnam steel plant. Previously, RINL sought partners for the project in 2011 for a 3Mt/yr cement plant at a cost of around US$200m. RINL has since decided to increase the production capacity of the proposed project to over 6Mt/yr due the amount of fly ash and slag it produces. At present 1.2Mt/yr of slag is sold to local cement producers.

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