Displaying items by tag: Coal

New Zealand: Fletcher Building subsidiary Golden Bay Cement has co-processed 80,000t of waste in production of its EcoSure reduced-CO₂ general-purpose cement at its Golden Bay, Whangarei, cement plant. The plant has achieved a coal substitution rate of 50%. It has processed various waste streams, including 3 million used tyres. EcoSure cement generates CO₂ emissions of 699kg/t of product, 20% less than its imported alternatives, according to Golden Bay Cement. Fletcher building CEO Nick Traber said that this figure is 'simply our starting point.' The company's next target is to achieve a 30% CO₂ reduction by 2030.

Traber said "We needed to think outside the box, or rather the cement bag, to be more precise. The challenge was around what enhancements we could make to our manufacturing processes at our Golden Bay cement works in to improve the plant's sustainability. We quickly realised that consuming used tyres and wood waste as alternative fuels was a win-win. When we started with the idea in 2015, we were aiming to replace 15% of coal with end-of-life tyres. Fast forward to 2022, and our rate of coal substitution is now at 50%, which has obviously delivered further reductions in carbon emissions, as well as helping to offset increased coal costs."

Canada: Lehigh Cement has initiated the administrative process to begin the use of alternative fuels (AF) in cement production at its Picton cement plant in Ontario. Under the company’s plans, the plant will substitute 200t/day of AF for coal and petcoke at the plant. Possible AF sources include excess seed from farm feed production in Ontario. The Picton cement plant previously reduced its CO₂ emissions per tonne of cement by 20% through assorted sustainability initiatives.

Picton plant manager Carsten Schraeder said that the move will support Canada’s 2030 emission reduction plan, and also take pressure off landfill sites.

South Korea: ThyssenKrupp Polysius’ Asia Pacific division has won an order to supply a Prepol SC type step combustion chamber for an unnamed cement plant in South Korea. The scope of the contract includes engineering, mechanical equipment and some modifications to the preheater tower. The commissioning of the system is planned for the end of 2023.

Regional chief executive officer Lukas Schoeneck said “The current turbulence on the coal market create a lot of pressure in cement plants to significantly increase the efforts on alternative fuels. Especially when talking high thermal substitution rates and lower quality alternative fuels, combustion chamber technologies connected to the calciner – like the Prepol SC - are the most suitable solution in the cement industry. Congratulations to the colleagues in Germany and in Asia working on this project.”

Australia: Adbri is targeting 40% refuse derived fuel (RDF) substitution in cement production at its Birkenhead, South Australia, cement plant in 2022. By 2024, it aims to further increase RDF use to 50%. The plant used 35% RDF in its production in 2021.

Adbri says that it is Australia's only cement producer not to use coal, relying instead on a combination of RDF and gas.

Canada: St Mary’s Cement plans to apply for a licence to substitute alternative fuel (AF) for a part of its coal, gas and petcoke fuel mix. The plant previously held a two-week AF substitution trial in May 2011. CBC News has reported that the subsidiary of Votorantim Cimentos will present its plan at an evening meeting for the general public on 18 November 2021. The company says that it plans to implement similar AF arrangements to those at its Bowmanville plant, where it uses 90,000t/yr of biomass, wood from construction and demolition and non-recyclable paper and plastics.

Environmental manager Ruben Plaza said "Lower CO2 emissions is the first consideration and, equally as important, the material has to be approved and available in sufficient quantities with a reliable and sustainable long-term supply."

Philippines: Holcim Philippines and its waste management subsidiary Geocycle have together inaugurated a waste processing plant and alternative fuels (AF) storage facility at the former’s Bulacan cement plant. The facilities consist of municipal solid waste (MSW) shredding equipment and a 5400m² warehouse. The installation is part of a US$2.41m investment by Holcim Philippines in the Bulacan plant, aimed at reducing its CO₂ footprint and increasing the circularity of its operations. The plant will produce its AF from MSW from the Boac municipality.

President and CEO Horia Adrian said “This initiative is part of our bigger commitment to make our operations more sustainable. These facilities will further reduce our carbon footprint and energy costs, while providing our partners with a safe and environmentally sound waste management option though our co-processing technology. We are excited to continue these projects to help us get closer to our long-term ambition of using 70% AF in cement production, instead of coal."

Japan: Taiheiyo Cement has installed three BWZ bucket elevators and a Louise TKF drag chain conveyor supplied by the Hong Kong-based subsidiary of Aumund at its new power plant at Ofunato. The cement producer uses both biomass and coal at the plant.

Two elevators and the drag chain conveyor are used to transport palm kernel shells (PKS) and palm empty fruit bunches (EFB), which are used as alternative fuels in the power plant. Each has a capacity of up to 150t/hr. The conveying concept is designed so that the different materials are kept apart and enter the silo buffer tanks separately. The third bucket elevator is used for coal handling. It is a gravity discharge type BWZ-S elevator with a capacity of up to 35t/hr.

UK: Helvellyn Group, a manufacturer of high energy, low impact solid fuels, has announced the official launch of its cement industry direct coal replacement product in Europe.

Helvellyn has chosen the Global Cemfuels Conference (Paphos, Cyprus 19 - 20 February 2020) as the location for the launch and will be sponsoring the event as well as attending in person.

Helvellyn solid fuels are designed to meet the needs of hard to adapt large industrial plants that are seeking to reduce, or even eliminate, their reliance on coal. The fuels are manufactured to replicate the physical and combustion properties of coal, while reducing the greenhouse gas emissions associated with mining, transporting and burning fossil fuels.

This latest renewable coal replacement fuel has been developed to address the specific needs of cement producers, many of whom have already introduced alternative fuels but are now struggling to increase the ratio due to physical, chemical and technical constraints.

Helvellyn’s product allows operators to maintain their existing alternative fuel mix while, in most instances, adding Helvellyn fuel as a direct drop-in replacement for coal from the point of delivery through pre-combustion processing and in combustion.

The Helvellyn fuel for cement production is based on four core principals, high energy, low moisture, low chlorine and ease of handling. While exact fuel specification and presentation can be fine-tuned to meet the specific needs of a given plant, fuel is typically presented as 50mm hard, hydrophobic lumps with the following properties: energy >25kJ/kg (10,750btu/lb, 5.97kcal/kg); ash content <6%; moisture <2%; chlorine <0.07%; carbon >60%; sulphur <0.2%; nitrogen <0.4%.

Frank Harris, CEO of Helvellyn Group, said, “We are delighted to be launching this important product at the Global Cemfuels Conference 2020. The cement industry has shown innovation and leadership in utilising alternative fuels and we believe we can help them to meet the challenges of the next decade as they further reduce the environmental impact of their product. We are excited to meet with the industry and let it see our fuel for the very first time - it is like nothing they will have seen before.”

India: Birla Corporation has been granted use of two coal mines in Madhya Pradesh. Accord has reported that the mines will provide ‘cost optimisation and fuel security’ to Birla Corporations and its subsidiaries in their central Indian operations.

Ethiopia: The Ministry of Trade and Industry, and the Chemicals and Construction Inputs Industry Development Institute are working with cement producers to replace imported coal with biomas in a bid to lower carbon CO2 and reduce reliance on foreign currency. The institute has conducted a feasibility study, with the support of the Global Climate Fund and the European Union, studying using a weed, Prophecies Newfora, as potential biomass, according to the Reporter newspaper. Plants run by Dangote Cement and Habesha Cement factories took part in the study. The government is also encouraging cement producers to use locally mined coal until the biomass project becomes fully operational.