The impact of impregnation on high kappa number hardwood pulps, 2011 PEERS Conference

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Mixed US Southern Hardwood was impregnated and cooked under various conditions in the laboratory. Kappa numbers between 15 and 55 were obtained. The reject content, kappa number and yield was studied and investigated as a function of time, temperature and alkali charge in the cooking. The results indicate that by using modern cooking technology, i.e. CompactCookingTM an optimal point with respect to the studied pulp parameters can be found.