A magnetic drum separator comprises a drum rotatable about an axis, the drum comprising an internal chamber and an opening at an end of the drum providing access into the internal chamber. The magnetic drum separator also comprises an inlet for supplying a liquid or granular substance into the internal chamber through the opening, a magnet outside of the drum for attracting magnetic material in the liquid or granular substance towards an internal sidewall of the internal chamber, a collection device for recovering magnetic material attracted to the internal sidewall and an annular seal member attached to the end of the drum that rotates with the drum in use. A baffle that bears against the annular seal member partially seals the opening. A plurality of cavities formed in the annular seal member receive fluid leaking into a boundary between the annular seal member and the baffle.

A process. The process includes forming a slurry comprising electrode active material particles of one or more lithium-ion electrochemical cells, magnetizing the electrode active material particles and separating the magnetized electrode active material particles from the slurry.

A process. The process includes forming a slurry comprising electrode active material particles of one or more lithium-ion electrochemical cells, magnetizing the electrode active material particles and separating the magnetized electrode active material particles from the slurry.

A broad object of a the instant invention can be to provide a method for separating X and Y sperm cells within a sample sperm cell population, the method including (i) differentiating between and (ii) separating sperm cells that have undergone a cellular process and sperm cells that have not undergone the cellular process, whereby a majority of the sperm cells that have undergone the cellular process can comprise one of X or Y sperm cells, and a majority of the sperm cells that have not undergone the cellular process can comprise the other of X or Y sperm cells. As to particular embodiments, the cellular process can be a maturational step. As to particular embodiments, the maturational step can be capacitation. As to particular embodiments, the maturational step can be the acrosome reaction. As to particular embodiments, non-viable and viable sperm cells can also be (i) differentiated between and (ii) separated.

An apparatus for a selective fractionation of ultrafine particles includes at least three separating columns fluidically connected in series by connecting lines. An infeed is arranged to feed into a connecting line which is arranged upstream of each separating column. Each connecting line comprises an inlet for a suspension of ultrafine particles to be separated and an inlet for at least one additional mobile phase. The inlets are alternately operated. A discharge branches off from a connecting line which is arranged downstream of each separating column. Each connecting line comprises an outlet for a first and a second discharge suspension of the ultrafine particles. The outlets are alternately operated. A control means provides a simultaneous switching of the through-flow switching position of the shutoff valves at the inlets and outlets. At least one magnetic field source for a magnetic field is arranged in each separating column.

An apparatus for a selective fractionation of ultrafine particles includes at least three separating columns fluidically connected in series by connecting lines. An infeed is arranged to feed into a connecting line which is arranged upstream of each separating column. Each connecting line comprises an inlet for a suspension of ultrafine particles to be separated and an inlet for at least one additional mobile phase. The inlets are alternately operated. A discharge branches off from a connecting line which is arranged downstream of each separating column. Each connecting line comprises an outlet for a first and a second discharge suspension of the ultrafine particles. The outlets are alternately operated. A control means provides a simultaneous switching of the through-flow switching position of the shutoff valves at the inlets and outlets. At least one magnetic field source for a magnetic field is arranged in each separating column.

A magnetic separator and methods of use are provided for continuous feeding of a material feed flow at high production feed rates without rotation of large heavy steel parts through high intensity magnetic fields. The magnetic separators use stationary magnetic matrices and redirect a material feed flow and a flushing fluid flow between the stationary magnetic matrices. Magnetic fields within the stationary magnetic matrices are modulated based on reception of a material feed flow or a flushing fluid flow to optimize separation processes and purging processes. The magnetic separators also collect and direct the separated components to isolated collection sites.

A magnetic separation filter has an unsupported magnetically soft material layer having a plurality of pores, and, optionally, a passivation layer disposed on the magnetically soft material layer. The magnetic separation filter may be part of a microfluidic device having a lateral flow channel and a vertical flow magnetic separation filter. The magnetic separation device may be used to separate magnetically tagged particles, such as cells.

A magnetic separation filter has an unsupported magnetically soft material layer having a plurality of pores, and, optionally, a passivation layer disposed on the magnetically soft material layer. The magnetic separation filter may be part of a microfluidic device having a lateral flow channel and a vertical flow magnetic separation filter. The magnetic separation device may be used to separate magnetically tagged particles, such as cells.

A method for filtering magnetic particles includes spinning a filter including a plurality of pores within a substrate. The method further includes applying, subsequent to spinning the filter, an external magnetic field to the filter. The method includes disposing a solution including a first particle and a second particle onto the filter. The first particle includes a magnetic particle of interest. The method further includes separating the first particle from the second particle by capturing the first particle within a pore of the plurality of pores within the substrate.