METHOD AND APPARATUS FOR REMOVING FERROUS SUBSTANCE FROM ROLLING OIL

PURPOSE:To make the concentration of ferrous impurities in rolling oil controllable and provide stainless steel products with good gloss by immersing a magnet saparator to which a magnet having specified magnetic flux density is attached in rolling oil in a rolling oil tank for a prescribed time to...

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Hauptverfasser:	TAKEI HIROHIKO, UEMATSU NOBUO, TSUJII KENICHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS PERFORMING OPERATIONS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To make the concentration of ferrous impurities in rolling oil controllable and provide stainless steel products with good gloss by immersing a magnet saparator to which a magnet having specified magnetic flux density is attached in rolling oil in a rolling oil tank for a prescribed time to remove the ferrous impurities as low as a specified concentration or less. CONSTITUTION:The lower part of a chain conveyer 3 to which magnet plates 2 with 2000 gauss or more magnetic flux density are attached is immersed in an oil in a rolling oil tank 1 and the chain conveyer 3 is moved in direction shown as the arrow (a) or (b). While passing the liquid surface, the chain conveyer 3 rotates at 30-90 deg. tilting angle against the liquid surface. A plurality of the magnet plates 2 are immersed in the rolling oil for a prescribed time and while moving in the oil, the plates 2 absorb the ferrous impurities, squeeze the effective rolling oil including the ferrous impurities and separate the ferrous impurities based on the magnetic force function, and thus decrease the ferrous impurities concentration to 2000ppm or less in the rolling oil. Then, the absorbed ferrous impurities are scratched and recovered in a scum tank 7 through a scum guide 6.