METHOD FOR REMOVING CHLORINE FROM METALLIC TITANIUM POWDER

PURPOSE:To obtain metallic Ti powder usable for powder metallurgy and enabling the production of a metallic Ti ingot having a low Cl content by remelting by bringing powdery metallic Ti into contact with a fluid in a supercritical state in a vessel and dissolving Cl contained in the Ti in the fluid....

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Bibliographic Details
Main Authors SHIBATA KIYOSHI, TOKUMITSU NAOKI
Format Patent
LanguageEnglish
Published 25.12.1991
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Summary:PURPOSE:To obtain metallic Ti powder usable for powder metallurgy and enabling the production of a metallic Ti ingot having a low Cl content by remelting by bringing powdery metallic Ti into contact with a fluid in a supercritical state in a vessel and dissolving Cl contained in the Ti in the fluid. CONSTITUTION:Powdery metallic Ti is brought into contact with a fluid in a supercritical state in a vessel and Cl contained in the metallic Ti powder is dissolved in the fluid. At this time, a batch process in which both the powder and fluid are sealed in the same vessel and a circulating process in which the fluid is circulated produce the same effect. Water, CO or methanol is desirably used as the fluid in a supercritical state. Metallic Ti having a low Cl content is obtd. and a high purity ingot can be obtd. by remelting the Ti once when the Ti is remelted to produce an ingot.
Bibliography:Application Number: JP19900096881