CARBON-MINERAL SORBENT AND METHOD FOR ITS PRODUCTION Russian patent published in 1996 - IPC

FIELD: chemical technology, processes of sorption. SUBSTANCE: proposed sorbent contains carbon-containing material, aluminium oxide and metals. Crystalline graphite is used as said carbon-containing material. Fe, Mn, Ti, Co, Cr, Ni, Zr, V, W, Ru and Mo which form sandwich compound with crystalline graphite and Na, Ca, Mg, K which distort crystalline lattice of crystalline graphite are used as mentioned above metals. Proposed sorbent contains (mass %): carbon 96.8-10.0, SiO₂ 1.63-29.8, Al₂O₃ 0.87-25.2, metals 0.70-35.0. Proposed sorbent is prepared by mixing carbon-containing material with Al₂O₃ followed by treatment thus prepared mixture in atmosphere of CO₂. Crystalline graphite being used as mentioned above carbon-containing material is 0-55 mm in size, graphite is dried at 125-150 C and ground to 0-6 mm in size. Then mixing with Al₂O₃, SiO₂ and with oxides of metals is carried out. Thus obtained mixture is then treated at 300-1200 C in the presence of water vapor and CO₂. EFFECT: improves quality of desired product, improves efficiency of the method. 5 cl