Method and apparatus for producing fine spherical powders from coarse and angular powder feed material
AssigneePyrogenesis Canada Inc.
InventorsChristopher Alex DORVAL DION, Ali SHAHVERDI, François PROULX
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Abstract
A high temperature process is provided, which can melt, atomize and spheroidize a coarse angular powder into a fine and spherical one. It uses thermal plasma to melt the particle in a heating chamber and a supersonic nozzle to accelerate the stream and break up the particles into finer ones.
Claims20
A process for spheroidizing and/or atomizing particles that are coarse and/or angular into spherical and fine particles.
A process for spheroidizing and/or atomizing feedstock particles that are coarse and/or angular into spherical and fine particles, comprising:
- a) heating the feedstock particles, b) having the particles go through a supersonic nozzle, and c) collecting from the gas stream a so-produced powder, for instance with a gas-solid separation system.
An apparatus for spheroidizing and/or atomizing feedstock particles that are coarse and/or angular into spherical and fine particles, comprising:
- a heating source;
- a heating chamber for melting the feedstock particles;
- a supersonic nozzle;
- and
- a gas-solid separation system to collect a powder from a gas stream exiting the supersonic nozzle.
Dependencies are inferred from the claim text.