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Four chromium oxide-free refractories based on spinel, alumina, and calcium aluminates are brought in contact with three ashes from coal and biomass with different base to acid ratios (B/A) and alkali contents under reducing atmosphere (simulated gasification). This investigation is performed in a lab-scale oven with a defined heat up to 1450°C and a subsequent slow cool down to room temperature in...
A broad set of ashes originating from national and international sources of hard coal, brown coal, and biomass is investigated under different ashing temperatures (815°C and 450/550°C) as well as oxidizing and reducing atmosphere conditions. In this computational study the mineral phase composition is estimated and the respective masses are not taken into account, since these approaches have been...
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