This disclosure may generally relate to drilling operations and, more particularly, to systems and methods for cleaning a drilling fluid as it travels back to the surface from a wellbore. An apparatus may comprise a magnetic body having a longitudinal axis. The magnetic body may comprise a pair of end plates that are spaced along the longitudinal axis and a magnetic unit disposed between the pair of end plates, wherein the magnetic unit is operable to generate a magnetic field. The apparatus may additionally comprise an axle disposed along a longitudinal axis of the magnetic body, wherein the axle is operable to rotate the magnetic body about the longitudinal axis.

This disclosure may generally relate to drilling operations and, more particularly, to systems and methods for cleaning a drilling fluid as it travels back to the surface from a wellbore. An apparatus may comprise a magnetic body having a longitudinal axis. The magnetic body may comprise a pair of end plates that are spaced along the longitudinal axis and a magnetic unit disposed between the pair of end plates, wherein the magnetic unit is operable to generate a magnetic field. The apparatus may additionally comprise an axle disposed along a longitudinal axis of the magnetic body, wherein the axle is operable to rotate the magnetic body about the longitudinal axis.

A magnet cleaner cooperates with one or more permanent magnets positioned over a conveyer carrying pieces of metal in non-ferrous material so as to remove the metal from the non-ferrous material. The magnet cleaner includes a frame and a capture sheet mounted to the frame and positioned on the frame so as to be substantially flush with the permanent magnets when they are in their lowered positioned. The magnets are spaced by an attenuation distance from the capture sheet when they are in their raised position. The permanent magnets, which may be mounted in a housing, are positionably mounted on the frame so as to be selectively elevatable between their lowered and raised positions upon actuation of an actuator. The actuator is positioned so as to cooperate with the permanent magnets and the frame so as to raise or lower the magnets relative to the capture sheet.

A magnet cleaner cooperates with one or more permanent magnets positioned over a conveyer carrying pieces of metal in non-ferrous material so as to remove the metal from the non-ferrous material. The magnet cleaner includes a frame and a capture sheet mounted to the frame and positioned on the frame so as to be substantially flush with the permanent magnets when they are in their lowered positioned. The magnets are spaced by an attenuation distance from the capture sheet when they are in their raised position. The permanent magnets, which may be mounted in a housing, are positionably mounted on the frame so as to be selectively elevatable between their lowered and raised positions upon actuation of an actuator. The actuator is positioned so as to cooperate with the permanent magnets and the frame so as to raise or lower the magnets relative to the capture sheet.

A system and a method for separating and recycling magnets made from rare earth elements from an article of manufacture used an alignment device to property position the rare earth magnet for processing. Once proper alignment is made, a separating device removes the magnet and a portion of the article. A heating device demagnetizes the magnets and vibration causes the magnets to separate from the portion of the article. Electromagnets remove the portion of the article and the rare earth magnets pass through for reclamation.

A system and a method for separating and recycling magnets made from rare earth elements from an article of manufacture used an alignment device to property position the rare earth magnet for processing. Once proper alignment is made, a separating device removes the magnet and a portion of the article. A heating device demagnetizes the magnets and vibration causes the magnets to separate from the portion of the article. Electromagnets remove the portion of the article and the rare earth magnets pass through for reclamation.

A magnetic separator includes two parallel and spaced magnetic rods. Each magnetic rod includes a non-magnetic tubular body with a longitudinal axis and a chamber, a plurality of magnetic members nested in the chamber, and a plurality of spacers made of high magnetic permeability materials and respectively disposed between the adjacent magnetic members. The magnetic members in each magnetic rod are disposed with like poles adjacent each other. Poles of the magnetic members in one magnetic rod are opposite to poles of the nearest adjacent magnetic members in another magnetic rod. The width of each magnetic member in the longitudinal axis of the tubular body is larger than that of each spacer so that a matrix type magnetic flux lines can be formed by the grate magnetic separator.

A magnetic separator for a product having ferrous and non-ferrous particles includes a housing having an entry section and a cleaning section. A driven magnetic roller is disposed within the cleaning section. A non-magnetic isolator including inner and outer surfaces is positioned in the cleaning section and surrounds and seals the driven magnetic roller. The driven magnetic roller is positioned proximate the inner surface of the non-magnetic isolator. The magnetic roller includes a magnetic field that penetrates a flow of product contacting the non-magnetic isolator wherein ferrous particles travel along the outer surface of the isolator and non-ferrous particles do not travel on the outer surface separating the ferrous and non-ferrous particles. The driven magnetic roller has no direct contact with the product.

A magnetic separator for a product having ferrous and non-ferrous particles includes a housing having an entry section and a cleaning section. A driven magnetic roller is disposed within the cleaning section. A non-magnetic isolator including inner and outer surfaces is positioned in the cleaning section and surrounds and seals the driven magnetic roller. The driven magnetic roller is positioned proximate the inner surface of the non-magnetic isolator. The magnetic roller includes a magnetic field that penetrates a flow of product contacting the non-magnetic isolator wherein ferrous particles travel along the outer surface of the isolator and non-ferrous particles do not travel on the outer surface separating the ferrous and non-ferrous particles. The driven magnetic roller has no direct contact with the product.

A system and a method for separating and recycling magnets made from rare earth elements from an article of manufacture used an alignment device to property position the rare earth magnet for processing. Once proper alignment is made, a separating device removes the magnet and a portion of the article. A heating device demagnetizes the magnets and vibration causes the magnets to separate from the portion of the article. Electromagnets remove the portion of the article and the rare earth magnets pass through for reclamation.