发明名称 |
Process and plant for recycling waste printed papers |
摘要 |
Process for improving the quality of deinked papermaking pulps obtained by recycling waste printed papers, in which: the papers are converted into a slush pulp (1), most of the ink (12) is removed (11) from this slush pulp, especially by selective primary flotation of the ink, and the deinked pulp is washed (5) to remove the residual ink before being conveyed into the circuit (14) for utilization of the pulp, wherein the waters (24) from this washing (5) are first of all subjected to a selective secondary flotation (16) to remove (17) only the residual ink therefrom, the suspension of the remaining matter (fibers and fillers) (18-23) being subsequently mixed with the pulp (15) originating from the washing (5). The invention also relates to a plant for making use of this process.
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申请公布号 |
US4865690(A) |
申请公布日期 |
1989.09.12 |
申请号 |
US19880165467 |
申请日期 |
1988.03.08 |
申请人 |
CENTRE TECHNIQUE DE L'INDUSTRIE DES PAPIERS, CARTONS ET CELLULOSE;SOCIETE DE PATE A PAPIER SAVOIE DAUPHINE |
发明人 |
BERNARD, EMILE;GALLAND, GERARD;VERNAC, YVES;DOUBLIER, CHARLES |
分类号 |
D21B1/32;D21C5/02 |
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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