Title:
ROLLING OIL AND METHOD FOR CLEANING SURFACE FINISHING OIL
Document Type and Number:
Japanese Patent JP2019022906
Kind Code:
A
Abstract:
SOLUTION: There is provided a method for reproducing oil contaminated with aluminum from a rolling process/surface finishing process which intensively mixes contaminated oil with alkali hydroxide metal aqueous solution to wash away aluminum, subsequently causes phase separation between an aqueous phase and a purified oil phase, then separates the aqueous phase from the oil phase, and finally removes residual water and a suspensoid present in some cases by a drying agent from the oil phase so as to be used as pure oil in the rolling process or surface finishing process so that a mass ratio of the contaminated oil to the alkali hydroxide metal aqueous solution is at least 1:2.EFFECT: A method for cleaning surface finishing oil purifies contaminated oil through a non-continuous process without a thermal separation method so as to be able to use the purified oil as pure oil again.SELECTED DRAWING: Figure 1
Inventors:
OLAF GUESSGEN
GRAF THOMAS
GRAF THOMAS
Application Number:
JP2018093076A
Publication Date:
February 14, 2019
Filing Date:
May 14, 2018
Export Citation:
Assignee:
HYDRO ALUMINIUM ROLLED PROD
International Classes:
B21B45/02
Attorney, Agent or Firm:
Takao Koshikawa