BENTONITE FOR BINDING IMPURITIES DURING PAPER PRODUCTION

摘要

Disclosed is a method for binding impurities during the production of paper. Said method comprises the following steps: a) a bentonite is provided, the ratio of monovalent cations in the cation exchange capacity (CEC) of the bentonite being at least 0.7 and the CEC amounting to more than 85 meq/100g, preferably more than 90 meq/100g, particularly more than 95 meq/100g; b) the bentonite provided according to step a) is added to a paper pulp or pulp slurry; and c) the impurities are bonded to the bentonite in the pulp or pulp slurry.