Cement News tagged under: alternative raw materials

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Lafarge Canada, Geocycle Canada and Rio Tinto partner for circular economy project

19 October 2020, Published under Cement News

Lafarge Canada, Geocycle Canada and Rio Tinto, North America’s only primary aluminium producer, are working together to reuse waste from the aluminium smelting process to make cement. The circular economy project aims to reduce the need to extract new raw materials and create more value from waste. Geocycle Canada, part of Lafarge Canada, and Rio Tinto have developed a new product, Alextra, made from spent pot liners that would otherwise be sent to landfill. Alextra is the result of years ...

NTPC begins the bulk supply of fly ash from new unit

17 August 2020, Published under Cement News

NTPC, India’s largest energy conglomerate, has begun the bulk supply of fly ash to cement plants from its new Rihand project in Uttar Pradesh. "NTPC Ltd has developed an infrastructure at Rihand project in Uttar Pradesh to transport fly ash in bulk to cement plants, located at distance, at a cheaper cost," said a company statement. The development is in line with the company’s commitment towards 100 per cent utilisation of fly ash from power plants.

Nesher Cement receives approval for AF use

06 July 2020, Published under Cement News

Israel’s Environmental Protection Ministry has approved Nesher Cement’s revised emissions permit, which will see the company replace some of its raw materials with waste. It will also use waste as fuel to reduce its dependence on petcoke. The approval comes despite protests from environmental advocacy organisation Adam Teva V’Din, which alleged that the request for permit changes reflected no effort to evaluate the expected emissions of dangerous metals, volatile organic compounds, dioxins...

Cemex Ventures to recycle plastic to produce concrete and aggregates via Arqlite

01 July 2020, Published under Cement News

Cemex Ventures is investing in US-based Arqlite SPC, a start-up that produces light recycled aggregates from plastic waste. The product benefits from a low CO 2 footprint and a greater durability for drainage, precast and lightweight concrete systems for non-structural use. Arqlite SPC began its research and development process in Argentina in 2016. It has developed an innovative technology that allows most of the plastic waste to be recycled instead of disposal at a landfill or polluting...

Georgia Power announces coal ash reuse project

01 April 2020, Published under Cement News

USA-based Georgia Power today announced a new beneficial reuse project for coal ash stored at Plant Mitchell, a retired coal-fired power station near Albany. Starting this year, approximately 2Mt of stored coal ash will be removed from the existing ash ponds for reuse in Portland cement manufacture. "As part of our ash pond closure efforts, Georgia Power is always looking for opportunities to reuse coal ash that are beneficial for our customers and communities," said Dr Mark Berry, vice p...

San Miguel Corp makes roads from plastic waste

24 January 2020, Published under Cement News

San Miguel Corp and Aboitz Equity Ventures Inc are using old plastic shopping bags, sachet wrappers and plastic packaging in their asphalt road mix to meet the Philippines' need for its US$157bn ‘Build, Build, Build’ infrastructure programme. The companies' new road surface material was developed with Dow Chemical and was first laid in November 2019, when 900kg of plastic was incorporated to pave a 1500m 2 test site near Manila.
 Aboitiz's Republic Cement & Building Materials Inc also use...

Votorantim creates new unit to assist alternative material co-processing

17 September 2019, Published under Cement News

Brazil’s Votorantim Cimentos has created a new business unit, named Verdera, to manage and provide services throughout the co-processing chain of alternative materials used in cement production. The company announced an investment plan of BRL400m (US$98m) to develop the unit over the next four years. The goal of Verdera is to offer waste disposal services to different companies and industries. Furthermore, the company plans to increase its petcoke substitution rate from 25 per cent to 80...

Construction and demolition waste as clinker raw material

09 September 2019, Published under Cement News

The concept of the circular economy encourages the reuse of waste products as raw materials in the production of cement. Arthur Harrisson looks at the use of construction and demolition waste as a raw material for clinker. Initial crushing of concrete produces aggregate containing a significant proportion of mortar Carbon dioxide is produced during cement clinker manufacture from two sources. Firstly, the primary raw material for clinker is limestone, which is predominantly calc...

Plugging the plastic leakage

11 June 2019, Published under Cement News

The issue of post-consumer plastic leaking into the ocean with devastating consequences on marine life has existed for some time but only recently the rallying call to solve this issue appears to have been firmly heard. As it mines this waste to produce a suitable alternative fuel to fire its kilns, the cement industry could prove to be a key ally. By Dr Vincent Aloysius, INSEE Ecocycle Co Ltd, Thailand. There are up to 12.8Mt of post-consumer plastics polluting the world's oceans ...

Cinvestav produce cement using volcanic ash

06 June 2019, Published under Cement News

Scientists at Mexico’s Centre for Research and Advanced Studies (Cinvestav) are using volcanic ash to make environmentally-friendly cement. First tests have shown that cement formulations that work contain up to 80 per cent of volcanic material, without the need for high-temperature kilns. Cinvestav reported that the group has developed some 15 alternatives in the past four year and have applied for a national patent.