Displaying items by tag: wind turbine

Switzerland/US: LafargeHolcim and GE Renewable Energy have signed a memorandum of understanding to research new ways to recycle of used wind turbines. The partners are seeking to use the shredded blades to produce low-CO₂ building materials. LafargeHolcim said that undertaking builds on the work of its subsidiary Geocycle, which previously began using GE’s waste wind turbine blades to produce alternative fuel (AF) for cement production. The cement producer called recycling the ‘key next step’ in line with the Circular Economy Action Plan of the European Union’s European Green Deal.

Sweden: Germany-based BHS-Sonthofen has announced its supply of a twin-shaft DKXS 4.0 batch mixer for Tecwill as part of the 1100-turbine Markbygden Wind Farm in Norrbotten County. The mixer produces 4m³ of fibre concrete per batch and allows for casting up to three windmill bases per day. Tecwill has supplied a mobile concrete batching plant to the project consisting of five aggregate bins, four cement silos, a fibre dosing module and turbo-heating container including a buffer tank for cold water.

Switzerland: LafargeHolcim has announced its participation in a project aimed at increasing the height of wind turbine towers by producing larger bases on-site using 3D concrete printing technology. LafargeHolcim will supply concrete for use with Denmark-based COBOD’s 3D printing technology, while US-based GE Renewable Energy backs the project. The method enables bases to exceed the 4.5m maximum diameter necessitated by road transportation. This increases the maximum height of turbine towers by 100% to 200m from 100m, which in turn raises power generation by 33% to 20.2GWh/yr from 15.1GWh/yr.

LafargeHolcim research and development head Edelio Bermejo said, “Concrete 3D printing is a very promising technology for us, as its incredible design flexibility expands the realm of construction possibilities. Being both a user and promoter of clean energy, we are delighted to be putting our material and design expertise to work in this ground-breaking project, enabling cost efficient construction of tall wind turbine towers and accelerating access to renewable energy”

Kenya: Mombasa Cement has started building a 36MW wind farm at its integrated Vipingo plant. The project is intended to support a new grinding unit being constructed at the site, according to the Business Daily newspaper. It is intended to reduce the cost of electricity and minimise disruptions caused by power cuts. The wind farm will consist of 12 turbines with a capacity of 3MW each. The cement plant is also installing a high-power voltage line from the Kaloleni substation to improve its connection to the local electricity grid.

Belgium: WindEurope, the European Chemical Industry Council (CEFIC) and the European Composites Industry Association (EUCIA) have created a cross-sector platform to look into using glass fibres and fillers from old wind turbine blades as a raw material for cement production. Other methods, such as a mechanical recycling, solvolysis and pyrolysis, are being developed and considered.

In 2018 wind energy supplied 14% of the electricity in the European Union (EU), from 130,000 wind turbines. Wind turbines blades are made up of a composite material, which boosts the performance of wind energy by allowing lighter and longer blades. At present 2.5Mt of composite material are in use in the wind energy sector. In the next five years 12,000 wind turbines are expected to be decommissioned.

“Wind energy is an increasingly important part of Europe’s energy mix. The first generation of wind turbines are now starting to come to the end of their operational life and be replaced by modern turbines. Recycling the old blades is a top priority for us, and teaming up with the chemical and compositors industries will enable us to do it the most effective way,” said Giles Dickson, the chief executive officer (CEO) of WindEurope.