| 摘要 |
A high-gradient magnetic separator is provided for filtrating weakly magnetic particles from a fluid in which they are suspended. The fluid is caused to flow through a separation chamber arranged in a gap formed between a pair of opposed pole surfaces of a pair of separate permanent magnetic devices connected with a closed magnetic circuit which includes yoke members. The permanent magnetic devices generate a strong magnetic field in the gap, the magnetic field having a field direction substantially transverse to at least a portion of the flow path of the fluid through the separation chamber. The permanent magnetic devices each include at least one permanent magnetic member having a substantially linear demagnetization curve. A matrix of soft magnetic material is located in the separation chamber to create local magnetic gradients in the magnetic field. The matrix includes strands extending in planes substantially transverse to the magnetic field direction. A major portion of the matrix strands have an orientation transverse to the magnetic field direction and to the main flow direction of the fluid. |
