The Electro-magnetic forces
In this research we will introduce the new technique Electro– magnetic forces to filtrate the lubricant oil from the dust of the natural or artificial solid metals. DC type voltage within the range of 0–30 Volts were used on a steel meshes (Porosity=0.83) and for the steel discs (P=0.0885), while the range of 0–200 Volts were applied for the steel meshes (P=0.787) .The preliminary investigations cover their oil types. These are: 150 N, 500 N and BSS, all were free of additives .Their general properties are listed in Table (A1). Furthermore the microscope examination was also involved to view the precipitator’s surfaces and the oil samples before and after the field’s investigations.