Iron-based oxygen carrier particles produced from micronized size minerals or industrial wastes

The production of highly reactive oxygen carrier particles based on low-cost iron materials is explored for chemical looping processes. Ten different Fe-based in the micronized size, both minerals and industrial residues, have been tested as precursors particles. redox reactivity each evaluated compared to state-of-the art with particulate materials, including one new material introduced this work. Due its excellent reactivity, Promifer was used produce by pelletizing granulation. Considering a trade-off between crushing strength process selected. This calcined at 950 °C showed high CH4. If higher operating temperature required, e.g. 1000 solid fuels, decreased. Low attrition rates good fluid-dynamic behavior pelletized particles, without agglomeration along cycles, were found fluidized bed reactor.