Displaying items by tag: Sand

Spain: Switzerland-based Synhelion and Cemex España plan to build a new clinker plant near Madrid. The plant will use Synhelion’s synthetic fuel to produce clinker from clay and crushed sand at 1200°C. The fuel consists of a gas produced from green hydrogen and captured CO₂, using solar heat. La Tribune de Genève Online News has reported that Synhelion’s thermochemical reactor further helps to capture CO₂ emissions from clinker production. A study by the Swiss Federal Institute of Technology Lausanne indicated that this can halve the cost of carbon capture at cement plants, to below Euro85/t.

France: Heidelberg Materials has announced plans for its CIRCO₂BETON concrete recycling project. It intends to build an industrial-scale selective separation unit at its Achères quarry near Paris. Here it will recycle demolished concrete by crushing it and separating it into its components: sand, aggregates, and recycled concrete paste (RCP). The recycled sand and aggregates will be reincorporated into new concrete.

The RCP will be transported to the Ranville cement plant in the Normandy region. There, a reactor for enforced carbonation will be installed to carbonate the RCP by exposing it to CO₂-containing exhaust gases from the kiln. The carbonated RCP acts as a carbon sink and will replace clinker in new low-carbon cement types. The project has the potential to reduce the CO₂ emissions of the Ranville cement plant by 20%.

CIRCO₂BETON is supported by the ‘Investment for the Future’ Program coordinated by the Ecological Transition Agency (ADEME). In addition, the Île-de-France region supports the selective separation plant at Achères through its zero-waste and circular economy plan. Subject to the funding, construction of both industrial pilots is scheduled to start in 2024 with production of RCP starting in 2025. The carbonation reactor is planned to be operational by 2026.

Nicola Kimm, the chief sustainability officer at Heidelberg Materials, said ”We are investing in a pioneering large-scale project based on innovative process technologies. Selective separation and CO₂ mineralisation are important levers to reduce the carbon footprint of our products. By closing the materials loop, we prove that concrete has the potential to be the most sustainable building product over its entire life cycle from production to recycling.”

Read more about RCP in the Decemeber 2022 issue of Global Cement Magazine

Japan: A team at the University of Tokyo has developed cement-free alternative concrete from ultra-fine sand and fly ash. NHK has reported that the process uses recyclable alcohols and has lower CO₂ emissions compared to concrete production using ordinary Portland cement. Research with industrial partners into possible construction sector applications is underway. Partnerships with Japanese ready-mixed concrete producers are reportedly also under discussion.

Further information is available from Yuzo Tobisaka, an independent Japanese consultant in the cement and ready-mixed concrete industry, at This email address is being protected from spambots. You need JavaScript enabled to view it..

China: Asia Cement has launched its 2050 decarbonisation strategy, entitled 'Net-Zero Carbon Emissions By 2050 - Asia Cement Advanced Deployment.' The strategy consists of multiple pillars, namely 'alternative fuels,' 'reducing cement's clinker factor,' 'increasing renewable energy reliance' and 'carbon capture.'

During 2022, Asia Cement reduced its limestone, clay, iron and sand consumption by 266,000t, its coal consumption by 17,000t and its gypsum consumption by 56,000t year-on-year. This eliminated 95,100t of CO₂ emissions throughout the year, according to the producer.

UK: Cemex UK has invested in a new Canning Conveyor conveyor system at its Swinderby sand and gravel quarry in Lincolnshire. The 1.6km-long system will convey extracted materials to a new processing plant. The new plant will double the quarry’s aggregates production capacity. The system includes a 20t hopper feeder and a radial stockpile, also supplied by Canning Conveyor. The company producer says that the new equipment will cut 50% of the operations’ CO2 emissions by eliminating diesel-powered dumpster use and saving 300,000l/yr of fuel, in line with Cemex’s Future in Action sustainability programme. It will also reduce dust and noise at the quarry. The investment is due for completion in early 2023.

UK: Breedon Group has acquired marine aggregates producer Severn Sands. With sales revenues of Euro10.5m in 2021, Severn Sands holds multiple dredging licences for operations in the Bristol Channel.

Breedon Group said that the acquisition ‘enhances our operational capability, secures scarce mineral reserves and resources, and ensures our downstream operations in the Gloucestershire and South Wales region are fully vertically integrated.’

UK: Innovative Ash Solutions has received a Euro588m Scottish government grant to establish a 20,000t/yr ash processing plant in South Lanarkshire. The Herald newpaper has reported that the plant will process boiler ash, cyclone ash and incineration fly ash for use in local cement production. When commissioned in 2022, the plant will eliminate 6104t/yr of CO₂ emissions, according to the operator. The government granted the funding under its Zero Waste Scotland circular economic investment scheme.

The company said “Using this new patented process, which diverts waste materials from landfill and avoids the use of virgin sand, creates a product which is cheaper and will reduce the environmental impact of cement production compared to the use of imported pulverised fuel ash.”

Innovative Ash Solutions is a joint venture of waste management company Levenseat and consultancy Organic Innovative Solutions.

Australia: AdBri and Barro Group have signed an agreement to acquire Metro Quarry Group’s sand operations. The business consists oftwo quarries, the Lang Lang quarry and the Nyora quarry, in Victoria. The quarries command a total of 50Mt of sand reserves. AdBri will pay US$21.6m to the companies’ joint venture for the purpose of the acquisition and to supplement the business’ working capital. The partners expect to conclude the deal in November 2021.

UK: Hanson has delivered 171,000t of cement to the site of the upcoming Hinkley Point C nuclear power plant in Somerset. It has also delivered 1Mm³ of ready-mix concrete via the customer’s on-site batching plants, 5Mt of aggregates and 443,000t of sand. Its Port Talbot site in Neath Port Talbot has supplied 230,000t of Regen ground granulated blast furnace slag (GGBFS) for use in concrete production, reducing the product’s carbon footprint by a total of 200,000t compared with concrete produced using ordinary Portland cement (OPC) only.

Dominican Republic: Germany-based BHS-Sonthofen has supplied an RPM 1513 rotor impact mill to building materials producer Calizamar. The mill consists of a vertical shaft and will produce crushed sand of a consistent fineness and cubic particle shape. Calizamar produces and sells aggregates, natural stone, pre-cast concrete and paper bags.