METHOD OF PREPARING PRESERVING AGENT FOR GREEN FODDER STORING ENSILAGE Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: waste of paper and pulp production lignosulfonates were used in the form of 28-30% aqueous solution. Solutions were treated by their passing through zinc- or copper-containing cation exchanger containing zinc or copper at concentration 120-130 kg/1 t anhydrous cation exchanger at the rate 2,8-3,0 m³/m² h up to preserving agent preparing. The latter contains 0.3-0.5 wt.-% zinc or copper, and zinc- or copper-containing cation exchanger and lignosulfonate aqueous solution taken at the ratio 0.9-24.0: 1.1-40.0. EFFECT: improved method of preserving agent preparing. 2 tbl