Patent ID: 8741802
Filing Date: 2014-06-03
Classification: B01D,B01J,C09K

Abstract:
1. A method of making an oil-binding agent by using highly porous natural silicate material and organic-containing residual material having a grained mineral portion, the method comprising the steps of: placing together the highly porous natural silicate material having an initial grain size between 4 and 10 mm and the organic-containing residual material having a grained mineral portion in a rotary drum furnace, mixing the highly porous natural silicate material having an initial grain size between 4 and 10 mm and the organic-containing residual material having a grained mineral portion in the rotary drum furnace, calcining the mixture in the rotary drum furnace at a temperature between 520 and 550° C. to completely burn the organic-containing residual material having a grained mineral portion while avoiding decarbonization of the highly porous natural silicate material to obtain a calcined mixture wherein the grained mineral portion of the organic-containing residual material having a grained mineral portion forms a pored, liquid-absorbing coating on the grains of the highly porous natural silicate material, and subsequently comminuting the calcined mixture to a grain size spectrum ranging between 4 and 0.125 mm.