Method and apparatus for the separation of caustic liquor, lime sludge and sludge in a causticizing process

摘要

In a causticizing process for separating at least white liquor and lime sludge out of the process, filters in the form of discs or drums are arranged. The filtrations take place under positive pressure and the filters are arranged in a closed system. Such a pressure filter can also be arranged for the separation of sludge.