White fused alumina lumps are low in silica and iron oxides.
They are often used as top grading and bed support media in many gas synthesis, secondary and autothermal reformers and special licensed applications where irregular, asymmetrical shapes of pure fused alumina are preferred.
The irregular shape of the chunks creates a swirling gas flow with difficult flow paths to increase gas distribution, trap particulates and hence slows down pressure drop built-up in the bed.
The lumps have a high stability at increased temperatures with a very low impurity capacity.
AOKTEC supplies irregular shaped and regular shaped like cylindrical lumps, depending on your wishes or applications.