METHOD FOR BLEACHING OXYGEN DELIGNIFIED CELLULOSE-CONTAINING PULP WITH OZONE

摘要

ABSTRACT OF THE DISCLOSUREIn a method for bleaching oxygen delignified cellulose-containing pulp such as sulphate, sodium and sulphite pulpswith ozone and peroxide, the ozone treatment takes place attwo stages, the alkaline solution which is added subsequentto the ozone treatment includes peroxide and complex formers,and 55 to 85% of the total amount of chemicals is added atthe first stage.