METHOD FOR PRODUCING RECYCLED PULP

• Main Authors: FURUKAWA HIROYUKI, WATANABE YASUHIRO, KAKIMI SHUNSUKE, MOTOSUGI NAOYA, MANDO RITSUO
• Format: Patent
• Language: English
• Published: 19.08.2013
• Subjects: APPARATUS THEREFOR; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PAPER-MAKING; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES

PROBLEM TO BE SOLVED: To provide a method for producing recycled pulp, which can produce recycled pulp containing a small amount of adhesive foreign matter even though raw material waste paper is not sufficiently screened.SOLUTION: The method for producing the recycled pulp sequentially comprises the steps of: disaggregating waste paper; removing foreign matters; roughly selecting and removing dust; dehydrating and concentrating slurry; diluting the slurry; carefully selecting and removing dust; and cleaning the slurry.