Process for producing graded coated articles

摘要

The invention is directed to a process for improving the separation of sodium bicarbonate brine from crude tall oil or of sulphate brine from soap oil in the recovery process of a pulp mill. In the neutralisation/acidulation of crude tall oil soap (6) or soap oil (9) with carbon dioxide (5) respectively sulphuric acid (11) a water solution (15) having an increased density is used.