Method and device for the purification of powders
OwnerSébastien DOUBLET, Eric VERNA +2inventors
InventorsSébastien DOUBLET, Eric VERNA, Olivier DEBELLEMANIERE, Marc ROSAIN-GUEU
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Abstract
A method for purifying a powder including grains and contaminants, includes preparing a suspension including the metal powder and a solvent; then while applying mechanical energy to the suspension; dispersing the grains and the contaminants in the solvent; removing the contaminants and the solvent, and drying the grains under a controlled atmosphere.
Claims13
A method for purifying a metal powder including grains and contaminants, the method comprising:
- a step of preparing a suspension including the metal powder and a solvent;
- then while applying mechanical energy to the suspension:
- a step of dispersing grains and the contaminants in the solvent;
- a step of removing the contaminants and the solvent, mechanical energy being kept during the dispersion step and the removal step;
- a step of drying the grains under a controlled atmosphere, said controlled atmosphere having an oxygen content of less than 1000 ppm.
A device configured to implement a method for purifying a metal powder including grains and contaminants, the device comprising:
- a reactor configured to:
- prepare a suspension including the metal powder and a solvent;
- and
- disperse the grains and contaminants in the solvent;
- a removal means configured to remove the contaminants and the solvent;
- a mechanical energy source configured to apply mechanical energy to the suspension upon dispersing the grains and contaminants in the solvent and upon removing the contaminants and solvent, mechanical energy being kept during said dispersing and removing;
- and
- drying means configured to dry the grains under a controlled atmosphere, said controlled atmosphere having an oxygen content of less than 1000 ppm.
Dependencies are inferred from the claim text.