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News Displaying items by tag: ground granulated blast furnace slag

Displaying items by tag: ground granulated blast furnace slag

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Carbicrete secures US$1.5m funding from SQN Venture Partners

21 December 2020

Canada: Carbicrete has secured US$1.5m in funding from US-based SQN Venture Partners (SQNVP). The funds will finance research and development activities at its new Lachine laboratory, as well as operations at its Drummondville pilot plant in Quebec. It said that this brings its total funding received from major investors in 2020 to US$8m with investment already agreed from Harsco Environmental, the Quebec Ministry of Energy and Natural Resources and Sustainable Development Technology Canada (SDTC). The technology company is developing concrete products made with steel slag for the construction industry.

Chief executive officer (CEO) Chris Stern said, “This venture debt cash injection following our equity financing further underlines the thesis that the financial markets are believing in value-added, carbon-negative technologies such as CarbiCrete that mitigate CO2 in our atmosphere. We are proud to have SQNVP as an investor in our company.”

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DB Group supplies Cemfree concrete to Environment Agency flood defence project in the UK

23 November 2020

UK: DB Group has supplied its Cemfree concrete product to a site in Birmingham, West Midlands for use by the Environment Agency in a flood defence project. It says that the agency will use the concrete “for kerb bedding and backing over several kilometres in conjunction with various recycled products in an effort to reduce the projects’ carbon footprint.” Cemfree is a low carbon concrete made using ground blast furnace slag (GGBS) and pulverised fly ash.

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Ready Mix Beton to supply slag cement concrete to monorail projects in Egypt

17 September 2020

Egypt: Suez Cement subsidiary Ready Mix Beton says that it has secured a contract for the supply of concrete for the construction of two new monorail lines projects. Due to begin in late-2020, the contract covers the construction of a monorail line between Cairo and the New Administrative Capital and another between 6 October City and Giza. The company says that it will use Suez Cement’s CEM III/A ground granulated blast furnace slag (GGBFS) cement to produce concrete for the 96km monorail network.

Suez Cement said, “CEM III/A cement is highly recommended when building thick concrete supports and massive structures because its hydration temperature of less than 210kJ/kg reduces cracking compared with Ordinary Portland Cement (OPC) when the applied concrete is subjected to dual exposure to sulphates and chloride ions, as happens in coastal areas.”

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Bureau of Indian Standards grants licence for slag cement production from UltraTech Cement

17 July 2019

India: The Bureau of Indian Standards' Hyderabad branch office has granted a licence for a slag cement product made by UltraTech Cement. The ground granulated blast furnace slag product is for use for use in cement, mortar and concrete according to Indian Standard IS 16714:2018, according to the Press Trust of India.

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Fairport Engineering reveals works at Hanson’s Purfleet plant

12 July 2019

UK: Fairport Engineering has revealed details on its work on Hanson’s 1Mt/yr Purfleet ground granulated blast furnace slag (GGBS) grinding plant. The plant includes two closed circuit ball mills and a vertical roller mill. Fairport Engineering worked on a project to improve the raw material intake facilities at the unit to replace a storage bunker with a new feed hopper and ramp. In the next phase the bunker is likely to be removed and replaced with a second feeding system.

The new system includes a reinforced concrete access ramp that will allow front-end loaders to deposit raw material into a 30t capacity Hardox lined hopper before being metered, at up to 200t/hr, by a vibrating feeder, onto an exiting conveyor belt that feeds the GGBS plant. The entire installation was completed in six weeks.

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USGS estimates slag production at 16Mt in 2018

04 March 2019

US: The United State Geological Survey (USGS) estimates that 16Mt of ferrous slag was produced in 2018. Blast furnace slag accounted for about 50% of the sales volume. Nearly 90% of this value was from sales of granulated slag. Steel slag accounted for almost all of the remainder. 2.2Mt of slag was imported. Slag was processed by about 25 companies servicing active iron and steel facilities or reprocessing old slag piles at about 140 processing plants in 30 states.

The USGS said that locally produced granulated blast furnace slag was in limited supply in 2018 due to granulation cooling only being available at two active US blast furnaces. Supply of basic oxygen furnace (BOF) steel slag was similarly affected due to plant closures. As per 2017, ground granulated blast furnace slag (GGBFS) sales volumes have failed to match increases set by the overall US cement industry since 2010 despite positive long term trends.

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USGS estimates US slag production at 15Mt in 2017

01 February 2019

US: The United State Geological Survey (USGS) estimates that 15Mt of ferrous slag was produced in 2017. Blast furnace slag accounted for about 50% of the sales volume. About 85% of this value was from sales of granulated slag. Steel slag accounted for almost all of the remainder. 2.2Mt of slag was imported. Slag was processed by about 25 companies servicing active iron and steel facilities or reprocessing old slag piles at about 175 processing plants in 30 states.

The USGS reported that the supply of blast furnace slag continued to be ‘problematic’ in the US due to the closure of blast furnaces and depleted slag piles. Supply of basic oxygen furnace (BOF) steel slag was similarly affected due to plant closures. However, ground granulated blast furnace slag (GGBFS) sales volumes have failed to match increases set by the overall US cement industry since 2010 despite positive long term trends.

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Ecocem promotes CO2 savings of its slag cement products

20 December 2018

Ireland: Ecocem says that its slag cement products have saved 10Mt of CO2 emissions compared to regular cement since it started trading in 2002. It produces cement products from ground granulated blastfurnace slag (GGBS). It says its GGBS cement has a carbon footprint of 32kg CO2/t compared to 850 - 900kg CO2/t for Ordinary Portland Cement (OPC). The Irish company operates four plants in Europe with a production capacity of 2.4Mt/yr.

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Hanson supplies slag cement for tidal barrier project

23 May 2018

UK: HeidelbergCement’s subsidiary Hanson is supplying its Regen GGBS (ground granulated blastfurnace slag) cement replacement for a project to build a new tidal barrier across the New Cut River in Ipswich. The Euro24m project is being managed by the Environment Agency to protect properties at risk of flooding.

The work is being carried out by VBA, a joint venture between VolkerStevin, Boskalis Westminster and Atkins, and is due to be fully operational by September 2018.

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Krakatau Semen Indonesia targets large-scale infrastructure projects

08 May 2018

Indonesia: Krakatau Semen Indonesia (KSI) is targeting strategic infrastructure projects for its slag cement products. The company’s ground granulated blast furnace slag (GGBFS) no longer requires special permission to be used, according to the Antara news agency. The joint venture between Krakatau Steel and Semen Indonesia operates a 0.69Mt/yr slag grinding plant at Cilegon in Banten.

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