METHOD OF PRODUCING THE SORBENT FOR HYDROGEN SULFIDE Russian patent published in 1997 - IPC

FIELD: chemical technology. SUBSTANCE: the main component of sorbent is the dispersed industrial waste containing 50-75% iron oxides, for example, hematite. Hematite is subjected for the combined grinding with activator-steam generator, for example, ammonium chloride at amount 5-15% of the main component weight and binding agent - sodium lignosulfate at amount 15-30% of the main component weight. Tablets or granules were made of the mixture that were subjected for thermic treatment in hydrogen atmosphere being firstly under polythermic conditions up to 500-650 C for 1 h and then - under isothermal conditions at 500-650 C for 60-90 min. EFFECT: improved method of producing. 3 cl, 1 tbl