发明名称 |
METHOD FOR PREPARING PAPER PULP FROM RECYCLED PAPER CONTAINING CONTAMINANTS |
摘要 |
<p>The invention relates to a method for preparing paper pulp from recycled paper containing contaminants characterized in that it comprises a first step of agitating the paper in the presence of water in order to obtain a mixture of fibres and contaminants in suspension, a second step of coarsely sieving said mixture in order to separate the coarse contaminants from the rest of the suspension, a third step of fine sieving in order to separate the fine contaminants from the coarsely-sieved suspension and a fourth step of washing said coarse and fine contaminants in order to separate the reusable fibrous materials from the rest of the non-reusable contaminants. In particular, the invention aims to provide a method for preparing paper pulp that is capable of producing a good quality paper pulp from highly-contaminated recycled paper, especially having a contaminant level in the dry state that is greater than or equal to 15% by weight.</p> |
申请公布号 |
CA2634529(C) |
申请公布日期 |
2014.10.28 |
申请号 |
CA20062634529 |
申请日期 |
2006.12.20 |
申请人 |
GEORGIA-PACIFIC FRANCE |
发明人 |
COLIN, PHILIPPE;BERINGUET, PHILIPPE;GILLOT, XAVIER;TINEL, JEAN-YVES |
分类号 |
D21B1/32 |
主分类号 |
D21B1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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