METHOD FOR RECOVERING OIL BY MAGNETIC SEPARATION AND MAGNETIC BODY FOR OIL RECOVERY

摘要

PROBLEM TO BE SOLVED: To efficiently recover oil floating on water surface. SOLUTION: Heavy oil 2 floating on sea water 1 is recovered by dispersing a magnetic body 3, and magnetically separated by a recovery apparatus 5 mounted on a recovery ship 4. The magnetic body 3 is provided with heightened affinity for the heavy oil 2 by coating the surface of a fine particle of magnetite 10 with a hydrophobic coating of stearic acid 11. The magnetic attractive force of the recovery apparatus 5 to the magnetite 10 affects also the heavy oil 2 through the stearic acid 11, and sea water 1 and the heavy oil 2 are efficiently separated by magnetic force.