Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1977-11-23
1980-05-06
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428242, 428281, 428329, 428227, 428388, 428389, 55 3, 55100, 210222, 210491, 210496, B01D 3506, B03C 100, B32B 516
Patent
active
042018277
ABSTRACT:
A supporting web of synthetic fibers in which a permanently magnetic powder s embedded is used to hold fine magnetic particles in a matrix for interaction with dissolved or dispersed substances present in a liquid or gas flowing through the matrix. The magnetic force in the supporting web produced by the embedded powder lends flow resistance to the adhering particle matrix making it possible to use smaller particles effectively. Catalytic effects can be produced if the magnetic particles are coated with a nonmagnetic material having a catalytic effect for the dissolved or suspended substance, as the coating does not interfere with the tenacity of the magnetically supported matrix. A matrix with particles of a ferrimagnetic compound are useful for removal of metal ions and metal complex ions from water solution as for example uranium. Ferrimagnetic or ferromagnetic matrix particles may be provided with a coating of an ion exchange material or with some other nonmagnetic material, as for example titanium oxide to approve the adsorption of metal ions. A catalyst coating can similarly be provided for the matrix particles.
REFERENCES:
patent: 3024392 (1962-03-01), Baermann
patent: 3136720 (1964-06-01), Baermann
patent: 3912634 (1975-10-01), Howell
patent: 4054513 (1977-10-01), Windle
Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftun
Lesmes George F.
Thomas Alexander S.
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