Förfarande för återvinning av svavel i en process för framställning av massa

摘要

The invention relates to a method for recycling sulphur in a preparation process for a chemical pulp, such as a sulphate process. The method is characterised in that the sulphur recovered from the process cycle is converted into bisulphate by means of an oxidant, which bisulphate is then reaused as a recycled acid in various process steps.