FIELD: chemistry.
SUBSTANCE: invention can be used in chemical engineering. The method of producing powdered bismuth (III) oxide involves oxidation of bismuth with oxygen in a revolving reactor with a controlled atmosphere. A mixture of bismuth metal and bismuth oxide powder is oxidised. Bismuth oxide powder is used in amount of 0.5-5.0 wt %. At the initial phase, the mixture is oxidised at temperature of 300-350°C, which is subsequently raised to 500°C.
EFFECT: invention simplifies the method of producing powdered bismuth (III) oxide while maintaining high output and quality of the product.
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