A method and apparatus for producing uniform pulp yields, wherein at least a refiner is controlled in accordance with the UV absorbance of the lignin dissolved in the digester cooking liquor, thereby to produce for a given quantity of wood chips a uniform pulp yield. A backflow control valve is automatically adjusted to maintain uniform flow of a sample of the digester cooking liquor through a UV analyzer, and a flushing arrangement is provided for flushing out contaminates such as sulphur dioxide from the system. Preferably the refiner is of the two-stage type, the first stage being automatically adjusted as a function of the UV absorbance of the digester cooking liquor, and the second stage being automatically adjusted as a function of the freeness of the output fiber slurry. Also, one or more of the cooking parameters is controlled by the UV analyzer to control the fiber yield.
Isbn (Books And Publications)
Poverty and Psychology: From Global Perspective to Local Practive
He is credited with the league initiating penalties for elbowing and kneeing. He was so loathed at Maple Leaf Gardens that a threat to shoot him and Howe was made during the 1956 playoffs after Lindsay fought Tod Sloan and Howe fractured Sloans shoulder with a hard hit.