A system includes a first magnetic separator, which includes a first housing or is installed in a user's first housing process system, defining a product flow path through which a material may pass, one or more magnets that generate a magnetic field that is positioned within the product flow path to attract metal from the material as the material passes through the product flow path, and a first sensor to detect a presence of captured metal contaminants on the one or more magnets, such as via a measurement of a strength of the magnetic field. The system includes a first controller configured to receive a signal from the first sensor, the signal indicating the presence of the captured metal contaminants on the one or more magnets, and send an instruction related to the signal.

A system includes a first magnetic separator, which includes a first housing or is installed in a user's first housing process system, defining a product flow path through which a material may pass, one or more magnets that generate a magnetic field that is positioned within the product flow path to attract metal from the material as the material passes through the product flow path, and a first sensor to detect a presence of captured metal contaminants on the one or more magnets, such as via a measurement of a strength of the magnetic field. The system includes a first controller configured to receive a signal from the first sensor, the signal indicating the presence of the captured metal contaminants on the one or more magnets, and send an instruction related to the signal.

The invention relates to a magnet apparatus for generating a magnetic field, the magnet apparatus comprising: at least three coils arranged besides each other along a first axis in a first plane, wherein each coil comprises a conductor comprising a material having superconducting properties at an operating temperature, the coils further comprise two legs and two bent end sections in the first plane, wherein a first and a second leg are arranged parallel to each other along a second axis in the first plane transverse to the first axis, and the two bent sections are arranged opposite to each other; and a controller arranged to control currents through the respective coils to obtain a current distribution in the first plane, wherein a current direction of the current distribution is alternating between opposite directions parallel to the second axis, with a period ? along the first axis. The invention also related to a magnetic density separation apparatus comprising the magnet apparatus.

The invention relates to a magnet apparatus for generating a magnetic field, the magnet apparatus comprising: at least three coils arranged besides each other along a first axis in a first plane, wherein each coil comprises a conductor comprising a material having superconducting properties at an operating temperature, the coils further comprise two legs and two bent end sections in the first plane, wherein a first and a second leg are arranged parallel to each other along a second axis in the first plane transverse to the first axis, and the two bent sections are arranged opposite to each other; and a controller arranged to control currents through the respective coils to obtain a current distribution in the first plane, wherein a current direction of the current distribution is alternating between opposite directions parallel to the second axis, with a period ? along the first axis. The invention also related to a magnetic density separation apparatus comprising the magnet apparatus.

A system includes a first magnetic separator, which includes a first housing or is installed in a user's first housing process system, defining a product flow path through which a material may pass, one or more magnets that generate a magnetic field that is positioned within the product flow path to attract metal from the material as the material passes through the product flow path, and a first sensor to detect a presence of captured metal contaminants on the one or more magnets, such as via a measurement of a strength of the magnetic field. The system includes a first controller configured to receive a signal from the first sensor, the signal indicating the presence of the captured metal contaminants on the one or more magnets, and send an instruction related to the signal.

A system includes a first magnetic separator, which includes a first housing or is installed in a user's first housing process system, defining a product flow path through which a material may pass, one or more magnets that generate a magnetic field that is positioned within the product flow path to attract metal from the material as the material passes through the product flow path, and a first sensor to detect a presence of captured metal contaminants on the one or more magnets, such as via a measurement of a strength of the magnetic field. The system includes a first controller configured to receive a signal from the first sensor, the signal indicating the presence of the captured metal contaminants on the one or more magnets, and send an instruction related to the signal.

The invention relates to a magnet apparatus for generating a magnetic field, the magnet apparatus comprising: at least three coils arranged besides each other along a first axis in a first plane, wherein each coil comprises a conductor comprising a material having superconducting properties at an operating temperature, the coils further comprise two legs and two bent end sections in the first plane, wherein a first and a second leg are arranged parallel to each other along a second axis in the first plane transverse to the first axis, and the two bent sections are arranged opposite to each other; and a controller arranged to control currents through the respective coils to obtain a current distribution in the first plane, wherein a current direction of the current distribution is alternating between opposite directions parallel to the second axis, with a period A along the first axis. The invention also related to a magnetic density separation apparatus comprising the magnet apparatus.

The invention relates to a magnet apparatus for generating a magnetic field, the magnet apparatus comprising: at least three coils arranged besides each other along a first axis in a first plane, wherein each coil comprises a conductor comprising a material having superconducting properties at an operating temperature, the coils further comprise two legs and two bent end sections in the first plane, wherein a first and a second leg are arranged parallel to each other along a second axis in the first plane transverse to the first axis, and the two bent sections are arranged opposite to each other; and a controller arranged to control currents through the respective coils to obtain a current distribution in the first plane, wherein a current direction of the current distribution is alternating between opposite directions parallel to the second axis, with a period A along the first axis. The invention also related to a magnetic density separation apparatus comprising the magnet apparatus.

A separator device for removing particles from suspension in a liquid includes a housing having first and second chambers with apertures for ingress and egress of liquid into the first chamber. Means are provided for setting up a swirl of liquid within the first chamber. Apertures enable flow of liquid between the first chamber and the second chamber. Means are also provided for setting up a swirl of liquid within the second chamber. The swirl in the second chamber is in substantially the opposite direction to the swirl in the first chamber, and there is no substantial flow in the second chamber which is in the same direction as the swirl in the first chamber.

A separator device for removing particles from suspension in a liquid includes a housing having first and second chambers with apertures for ingress and egress of liquid into the first chamber. Means are provided for setting up a swirl of liquid within the first chamber. Apertures enable flow of liquid between the first chamber and the second chamber. Means are also provided for setting up a swirl of liquid within the second chamber. The swirl in the second chamber is in substantially the opposite direction to the swirl in the first chamber, and there is no substantial flow in the second chamber which is in the same direction as the swirl in the first chamber.