Research company CI4C to investigate use of polysius® pure oxyfuel 12 March 2021 The four European cement manufacturers Buzzi Unicem-Dyckerhoff, HeidelbergCement AG, Schwenk Zement KG and Vicat plan to investigate the industrial-scale use of Oxyfuel carbon capture technology in cement production in a demonstration plant. Hence, the research company "CI4C - Cement Innovation for Climate" was established. The aim is to capture 100 per cent of the CO 2 and use it with the help of renewable energies to produce so-called 'refuels', ie climate-neutral synthetic fuels such as kerosene for the aviation industry. Dr Markus Sauer, senior proposal manager, said: "The research company CI4C and thyssenkrupp are currently investigating the use of our polysius