Powder treatment method, powder treatment device, and powder manufacturing method

摘要

When making powder material ride on gaseous current to move it, the present invention prevents the powder material from fixedly adhering to a wall surface of a treating apparatus. The present invention concerns a process of treating powder material and an apparatus for treating the same, each of which makes the powder material such as pharmaceutical, ride on gaseous current to move it. In a powder-material treating apparatus ( 1 ) such as the jet mill, a heating means ( 13 ) is provided along a wall surface ( 12 ) to which the powder material collides. This heating means ( 13 ) heats the wall surface ( 12 ) to not less than approximately a temperature at which the powder material commences to soften and to a temperature lower than a melting temperature of the powder material. And the powder material is made to move while riding on the gaseous current within this powder-material treating apparatus ( 1 ).