Abstract:

Lignosulfonate can be synthesized with the scrap produced in alkali papermaking process and it can further be mixed wity 4 % FeSO4•2H2O into a slurry deluent. The determination of the slurryoperties shows that it has the characteristics of good temperatureresistance and dilution effect, and certain water-loss capacity as well. At the same time it eliminates the pollution of chromium to environment.

Key words: Alkaly lignin, Sulfonats, Sulfonation, Slurry diluent