IMPACT OF TEMPERATURE AND ALKALI CHARGE ON PULP BRIGHTNESS

摘要

A method for improving pulp brightness utilizes a combination of a distribut ed total white liquor charge during the warm fill, hot f ill and cooking stages of a batch cooking process and low cooking temperatures d uring the cooking stage. The high total white liquor cha rge ranges between 15 % AA ? 35 % AA, while the cooking temperatures range betwe en 150 ? 168 .degree.C.