1 Application Note NEW LOGIC INTERNA TIONAL, INC. Background As pulp mills have increased produc- tion rates to meet market demands, many mills built over the last 20 to 30 years have become limited in evapo- rator capacity to treat their black li- quor volume. The ability to also re- cover excess liquor from storage ar- eas to higher solids levels is another demand on the evaporators. For mills with outside storage ponds that re- ceive

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