Espessamento de polpas

Abstract

Thickening is an operation of suspended solids separation in a fluid medium by means of sedimentation of solid particles.The thickening operations occur by the necessity of recovering water and adjusting the density of pulp aiming the subsequent operations.The equipment performing these operations are generally cylindrical-conical tanks, where the feed is introduced in the center and a dense pulp is removed through the tank bottom. The clarified liquid is drawn into a flume that is surrounding the tank.This work presents several models of thickeners and describes some techniques used for sizing these equipments.