A magnetic chip conveyor of the present invention reduces the possibility that both end portions of a long chip are adsorbed by two or more types of magnets having different magnetic forces, so that a long chip does not remain. An endless chain is disposed on the rear surface of a plate, so as to be wound around sprocket wheels. The sprocket wheel is rotated in the counterclockwise direction by a motor, and the endless chain rotates in the counterclockwise direction. Twelve magnet holders are fixed to the endless chain at equal intervals. Three types of permanent magnets having different magnetic forces are bonded and fixed to the magnet holders.

A magnetic separating conveyor output roll including a first plurality of magnetic rings, each of such magnetic rings having radially inner and radially outer ends, each such magnetic ring having annular north and south poles respectively positioned at its radially inner and radially outer ends; and including a second plurality of magnetic rings having radially inner and radially outer ends, each such magnetic ring having annular north and south poles respectively positioned at its radially outer and radially inner ends; wherein the first and second pluralities of magnetic rings are stacked in an alternating series along a rotation axis; wherein each magnetic ring's radial cross section is rectangular; wherein each magnetic ring includes a circumferential array of radially extending seams, the roll incorporating a plurality of adhesive bonds residing within such seams; the roll further incorporating magnetic armature effect resisting gaps between adjacent pairs of the magnetic rings.

A magnetic separating conveyor output roll including a first plurality of magnetic rings, each of such magnetic rings having radially inner and radially outer ends, each such magnetic ring having annular north and south poles respectively positioned at its radially inner and radially outer ends; and including a second plurality of magnetic rings having radially inner and radially outer ends, each such magnetic ring having annular north and south poles respectively positioned at its radially outer and radially inner ends; wherein the first and second pluralities of magnetic rings are stacked in an alternating series along a rotation axis; wherein each magnetic ring's radial cross section is rectangular; wherein each magnetic ring includes a circumferential array of radially extending seams, the roll incorporating a plurality of adhesive bonds residing within such seams; the roll further incorporating magnetic armature effect resisting gaps between adjacent pairs of the magnetic rings.

The present invention includes a method of controlling an oil spill through introduction of a plurality of magnetizable particles into the oil spill in an amount sufficient to form a colloidal mixture. An absorbent is, also introduced into the oil spill to form an absorbent mixture. A magnetic field can be applied to the system to move, manipulate, or otherwise control the absorbent mixture in response to movement of the magnetic field.

The present invention includes a method of controlling an oil spill through introduction of a plurality of magnetizable particles into the oil spill in an amount sufficient to form a colloidal mixture. An absorbent is, also introduced into the oil spill to form an absorbent mixture. A magnetic field can be applied to the system to move, manipulate, or otherwise control the absorbent mixture in response to movement of the magnetic field.

A device for separating weakly magnetic first particles, for example hematite particles, from mixture (912) comprising the first particles (913) and less magnetic second particles (914) is presented. The device comprises first magnetizing equipment (901) for producing magnetic field and for moving the mixture so that mutually opposite polarity portions (N, S) of the magnetic field sweep the mixture in a sweeping direction and thereby deflect the direction of movement of the first particles towards the sweeping direction and away from the direction of movement of the second particles. The device comprises also a supply equipment (932) for supplying the mixture to the carrier equipment with the aid of gravitation and a second magnetizing equipment (931) connected to a feed box (920) for producing second magnetic field for deflecting a direction of movement of the first particles differently than a direction of movement of the second particles when the mixture is moved by the gravitation towards the carrier equipment so as to generate, to the mixture arriving at the carrier equipment, a concentration gradient of the first particles. The pre-concentration of the first particles simplifies their separation form the mixture.

A device for separating weakly magnetic first particles, for example hematite particles, from mixture (912) comprising the first particles (913) and less magnetic second particles (914) is presented. The device comprises first magnetizing equipment (901) for producing magnetic field and for moving the mixture so that mutually opposite polarity portions (N, S) of the magnetic field sweep the mixture in a sweeping direction and thereby deflect the direction of movement of the first particles towards the sweeping direction and away from the direction of movement of the second particles. The device comprises also a supply equipment (932) for supplying the mixture to the carrier equipment with the aid of gravitation and a second magnetizing equipment (931) connected to a feed box (920) for producing second magnetic field for deflecting a direction of movement of the first particles differently than a direction of movement of the second particles when the mixture is moved by the gravitation towards the carrier equipment so as to generate, to the mixture arriving at the carrier equipment, a concentration gradient of the first particles. The pre-concentration of the first particles simplifies their separation form the mixture.

A magnetic-matter removing apparatus includes: endless chains arranged to run in circles between inside liquid containing a magnetic matter and above the liquid; magnetic-matter attracting means supported on the endless chains for attracting the magnetic matter in the liquid with a magnetic force; a drum arranged above the liquid, having a magnetic force stronger than the magnetic force of the magnetic-matter attracting means, and configured to detach the magnetic matter attracted to the magnetic-matter attracting means from the magnetic-matter attracting means and attract the magnetic matter; and discharging means for scraping the magnetic matter attracted to the drum and discharging the magnetic matter to outside the apparatus.

A magnetic-matter removing apparatus includes: endless chains arranged to run in circles between inside liquid containing a magnetic matter and above the liquid; magnetic-matter attracting means supported on the endless chains for attracting the magnetic matter in the liquid with a magnetic force; a drum arranged above the liquid, having a magnetic force stronger than the magnetic force of the magnetic-matter attracting means, and configured to detach the magnetic matter attracted to the magnetic-matter attracting means from the magnetic-matter attracting means and attract the magnetic matter; and discharging means for scraping the magnetic matter attracted to the drum and discharging the magnetic matter to outside the apparatus.

A magnetic chip conveyor of the present invention reduces the possibility that both end portions of a long chip are adsorbed by two or more types of magnets having different magnetic forces, so that a long chip does not remain. An endless chain is disposed on the rear surface of a plate, so as to be wound around sprocket wheels. The sprocket wheel is rotated in the counterclockwise direction by a motor, and the endless chain rotates in the counterclockwise direction. Twelve magnet holders are fixed to the endless chain at equal intervals. Three types of permanent magnets having different magnetic forces are bonded and fixed to the magnet holders.