Displaying items by tag: Plastic

Japan: Cement producers used 21.9Mt of post-consumer materials and by-products in the 2024 financial year, down by 3% year-on-year, marking the third consecutive annual decline, according to the Japan Cement Association.

Coal ash and blast furnace slag, which together make up over 50% of the total, both declined, although post-consumer plastics increased for a fourth consecutive year.

Cement production, including clinker for export, also fell by 3% to 45.7Mt. The amount of byproducts used per tonne of cement dropped from 480kg in 2023 to 478kg, but remained above 400kg for the 21st year in a row.

New Zealand: Fletcher Building will begin using hard-to-recycle plastics and wood as alternative fuels in its cement production process during 2025, as part of its ‘front-end firing project’, according to The Post newspaper. The company aims to be 100% coal-free by 2030. It said wood pellets and shredded tyres currently substitute for 50% of coal. The new additions will raise this to 70–80%. Fletcher Building began burning wood pellets in 2003, construction waste in 2010 and tyres in 2023. Fletcher Building said it plays a “significant role in waste diversion for New Zealand."

Spain: Holcim is exploring the use of char as an alternative fuel in cement production as part of the Plastics2Olefins project, in collaboration with Geocycle. The producer is evaluating char samples made from different types of plastic waste.

Geocycle plant manager Cristina Gómez said “Since char properties can vary depending on the feedstock, the company is conducting detailed evaluations – looking at calorific value, moisture content, heavy metals, halogens, and sulphur levels, among other parameters.”

These full-scale industrial tests aim to understand how char behaves during combustion, how it affects emissions of CO₂, NO_x, and SO_x, and whether it impacts the stability of the production process or the quality of the cement. Char samples produced at the Repsol pilot plant are being tested at two of Holcim’s facilities: the Quality Central Laboratory and Geocycle Albox. Gómez added “These comprehensive tests provide a solid understanding of char’s properties and help anticipate how it will perform in real-world industrial conditions.”

Holcim is also experimenting with blends of char and petcoke to optimise energy performance and environmental compliance.

India: The Rural Development Department has signed a memorandum of understanding with ACC Cements to co-process non-recyclable plastic waste at its Barmana plant. The initiative will cover the Bilaspur, Chamba, Kangra, Kullu and Mandi districts. The partnership follows similar agreements with Ambuja Cements and UltraTech Cements, and aims to reduce environmental pollution and landfill use through cement kiln co-processing.

Slovakia: Slovak cement plants recovered 374,000t of alternative fuels made from waste in 2024, replacing 75% of heat from fossil fuels, according to the Cement Manufacturers Association (ZVC) of the Slovak Republic. This has reportedly saved almost 230,000t of coal and reduced the cement plants’ carbon footprint.

Director of ZVC Rudolf Mackovic said “Instead of waste, such as non-recyclable plastics, being deposited in landfills without being used, it is processed into fuel in processing plants. Such an alternative fuel meets strict quality and ecological parameters.”

India: UltraTech Cement has signed a memorandum of understanding with the Himachal Pradesh Rural Development Department to process non-recyclable plastic waste at its Baga cement plant in Solan. The plant will process waste from Bilaspur, Hamirpur, Mandi, Solan and Una districts. The Rural Development Department operates 29 plastic waste management units that will supply waste to the plant.

Canada: Ash Grove Cement, part of CRH, says it will release the findings of technical studies supporting its plan to burn alternative fuels at its Mississauga cement plant. Ash Grove plans to burn materials such as construction and demolition waste, wood, plastics and rubber.

The company says the initiative will reduce fossil fuel emissions by limiting its current reliance on coal, while also diverting materials from landfill.

India: The Rural Development Department of Himachal Pradesh has signed a memorandum of understanding (MoU) with Ambuja Cements to address the issue of non-recyclable plastic waste in the state. Under this partnership, Ambuja Cements will collaborate with the department to co-process non-recyclable plastic in its cement kilns. The initiative will cover the districts of Chamba, Kangra, Shimla and Solan, where 29 plastic waste management units have been established.

Lithuania: Recycling company Ekobāze is set to construct a plastic byproducts and solid recovered fuel (SRF) processing complex in the Akmenė Free Economic Zone. The project is valued at about €12m and received €10m in EU financing, according to BNS News. It will create 60 new jobs. The complex will supply SRF to Akmenės Cementas, the sole cement producer in Lithuania, utilising post-consumer plastic unsuitable for recycling in its production processes. Ekobāze will process other plastic into pellets. Construction will begin at the end of 2025, with production starting in early 2027.

Philippines: Holcim Philippines and Universal Robina Corporation (URC) have entered a tripartite agreement with the local government of Obando, Bulacan, to provide incentives for workers at the town's material recovery facility, based on the volume of refuse diverted. The material recovery facility in Obando has collected and sorted 785t of plastic waste for co-processing. Since 2021, URC and Holcim's waste management unit Geocycle has been processing plastic from URC's operations for co-processing. The plastics are converted into alternative fuels used to power the kiln at Holcim’s plant in Misamis Oriental.

Irwin Lee, URC president and CEO, said "This new agreement, with Obando as a key partner, aims to further drive community-based ‘waste’ diversion efforts. We hope to replicate it in other towns and cities to amplify the impact of what we set out to do three years ago."