To provide a method for producing waste paper pulp from newspaper (waste paper) scraped/recovered from homes and offices as a raw material, wherein a special surfactant and electrolyzed water are added to its deinking (ink-removing) process to improve recovery.
The method for producing waste paper pulp from waste newspaper as a raw material includes a process for cutting waste newspaper into small pieces, adding alkaline electrolyzed water obtained by electrolyzing water containing a trace amount of purified salt, to the small cut waste newspaper, stirring the mixture at a high speed to fiberize the waste newspaper, charging the fibrous waste newspaper in a stirring container, adding a proper amount of a liquid surfactant, gently stirring the mixture, and simultaneously removing inks released on the surface of the solution. The liquid surfactant is preferably a sodium straight chain alkylbenzene sulfonate.
NOMURA MASATO
AKIYAMA KENICHI
| JPH10298885A | 1998-11-10 | |||
| JPH09105088A | 1997-04-22 | |||
| JPS5140404A | 1976-04-05 | |||
| JPS4541041B1 | ||||
| JPH11158788A | 1999-06-15 | |||
| JP2008272334A | 2008-11-13 | |||
| JP2007209546A | 2007-08-23 | |||
| JPH11158788A | 1999-06-15 | |||
| JPH09105088A | 1997-04-22 | |||
| JP2008272334A | 2008-11-13 | |||
| JP2007209546A | 2007-08-23 |
JPN6013014969; 紙パルプ技術便覧 第５版, 19920130, 第１３７、１３８、１５３頁, 紙パルプ技術協会
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