SYSTEM FOR RECEPTION AND TRANSPORT OF LIME MUD FROM A WHITE LIQUOR FILTER

摘要

The invention concerns a system for the reception and transport of dry lime mud from a continuously operating pressurised filter 1 in a causticisation process. According to the invention, a tube valve 14 is used as outlet means from the pressurised process. The tube valve has a minimum length that is twice the diameter of the tube, and a column of lime mud can be held within it as a pressure lock, and the column of lime mud can be caused to descend through the tube valve by controlling the difference in pressure between the inner surface and the outer surface of the tube such that the diame-ter of the tube expands essentially uniformly along its length by 5-10% or by at least 4-6 millimetres.