Process for treating wastes from the machining of ferromagnetic

Details Process for treating wastes from the machining of ferromagnetic Process for treating wastes from the machining of ferromagnetic

1991-06-25

1992-09-15

Dawson, Robert A.

Liquid purification or separation

Processes

Using magnetic force

210748, 210749, 210771, 210772, 210791, 210805, 209 3, 209214, 134 1, 134 10, 134 34, 134 40, B01D 3506

Patent

active

051475545

ABSTRACT:
A process and apparatus for treating waste which contains ferromagnetic components, such as the grinding sludge from grinding ferromagnetic materials which contains ferromagnetic particles contaminated with water and oil, in which the waste is introduced into a separating tank containing a washing solution and mixed with the solution by stirring until the oil dissolves. Subsequently, a magnetic field is produced at the separating tank wall which causes magnetic components to accumulate on the wall. The wash solution is then filtered to remove non-ferromagnetic solids. The magnetic field is subsequently removed, and accumulated ferromagnetic components are released into the wash solution. The ferromagnetic components are then filtered out from the wash solution and dried, and the filtered wash solution is conveyed to an oil separation tank where oil separated from the waste is recovered.

REFERENCES:
patent: 1580723 (1926-04-01), Hapgood
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patent: 4018886 (1977-04-01), Giaever
patent: 4054513 (1977-10-01), Windle
patent: 4314856 (1982-02-01), Steimel
patent: 4851119 (1989-07-01), Bergloeff et al.

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