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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Main Authors | , |
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Format | Patent |
Language | English |
Published |
25.12.1991
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Subjects | |
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Abstract | 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. |
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AbstractList | 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. |
Author | TOKUMITSU NAOKI SHIBATA KIYOSHI |
Author_xml | – fullname: SHIBATA KIYOSHI – fullname: TOKUMITSU NAOKI |
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Notes | Application Number: JP19900096881 |
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RelatedCompanies | NIPPON STEEL CORP |
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Snippet | 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... |
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SubjectTerms | CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER |
Title | METHOD FOR REMOVING CHLORINE FROM METALLIC TITANIUM POWDER |
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