S0501-1-3 Measurement of Fiber-Concentration in Pulp-Suspension Flow

Abstract

An optical measuring method for evaluating the fiber concentration has been developed for flowing pulp-suspensions. This method was applied to a fully-developed steady flow in ducts with a square cross section. The obtained results clarify quantitatively, in a definite form, the distributions of the fiber concentration that has long been an interesting subject of discussion among researchers. And also this shows availability of the method. Furthermore, it is found that the flow mechanism of pulp-suspension in ducts can be classified into five patterns.