Properties of boron oxide synthesized from boric acid in fluidized bed on pilot scale

ISSN 1121-7588
A. Mergen
Eti Holding A.S., Ankara, TURKEY


Boron oxide was synthesized from boric acid in a fluidized bed in two stages. At the first stage, boric acid was converted to metaboric acid at a bed temperature of 130°C and then boron oxide was obtained by the dehydration of metaboric acid in the second stage between 225-235°C. Synthesized boron oxide was amorphous, had bulk density of around 0.61 g/cm3, >98.67% purity and about 650 μm mean particle size. Boron oxide particles had a shape of platelets within large aggregates of between 300-600 μm.
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