| 摘要 |
PURPOSE:To profitably produce a reclaimed oil having a high purification degree, by homogeneously dispersing MgO powder in the waste oil of a mold lubricating oil and subsequently subjecting to centrifugal separation treatment to remove impurities. CONSTITUTION:Optimally 0.5-5wt.% MgO powder, preferably collected dust obtained in a magnesium-dissolving process for the manufacture of spherical graphic cast iron, is added and homogeneously dispersed in the waste oil of a mold lubricating oil used in a cold forging process. The produced dispersion is subsequently treated by a separator normally having a centrifugal force of approximately 1000-3000G (more preferably 5000G) to remove impurities in the waste oil, thereby providing a clear reclaimed oil. |
