AGGLOMERATION PROCESS OF STEEL DUST

• Main Authors: KATO NORIYUKI, IKEDA TSUNEO, SHINKAI AKIO, OKADA YASUHIRO
• Format: Patent
• Language: English
• Published: 19.02.2004
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide an agglomeration process of a steel dust generated from a steel making process for the purpose of recycling, and is supplied to a converter furnace or reduction furnace directly. SOLUTION: The agglomeration process of the steel dust is composed of adding 2-15 mass% unslaked lime to steel dust, mixing them, extruding them and manufacturing a formed body, stacking this formed body below 2 m in height, and maturing inside of a house. Then, in the agglomeration process of the steel dust, the quantity of the metallic iron contained in formed body is more than 5 mass%. COPYRIGHT: (C)2004,JPO