POROUS MAGNETIC SORBENT Russian patent published in 2004 - IPC

FIELD: production of porous magnetic sorbents. SUBSTANCE: the invention is pertinent to porous magnetic sorbents intended for removal of a water surface or a soil of impurities caused by petroleum, greases, fuels and other hydrocarbon products. Porous magnetic sorbent contains a hydrophobic polymeric binding agent made in the form of a powder or granules, a magnetic filter in the form of a magnetic material with particle sizes from 1 nm up to 10 microns, mineral oil and aluminosilicate filler with particle sizes of no more than 100 microns modified with the help of a water-repellent silicone fluid in amount of 0.05-0.5 mass % at the definite ratio of the components. Technical result: the sorbent has porosity of 70-98 %, high sorptive capacity, good magnetic characteristics and it may be used repeatedly. EFFECT: sorbent has porosity of 70-98 %, high sorptive capacity, good magnetic characteristics and it may be used repeatedly. 4 cl, 9 ex