发明名称 |
FLOTATION PROCESS FOR DE-INKING WASTE PRINTED PAPER |
摘要 |
<p>A flotation process for the de-inking of printed waste-paper by treating the paper pulp in the pulper at alkaline pH-values by means of alkali silicate, oxidative bleaches and separating the loosened printing-ink particles from the fibrous material suspension by flotation, in which protein fatty acid condensates are added finely distributed, possibly together with dispersing agents, in a solution or dispersion which is fluid at normal temperature.</p> |
申请公布号 |
EP0335260(A3) |
申请公布日期 |
1990.10.24 |
申请号 |
EP19890105221 |
申请日期 |
1989.03.23 |
申请人 |
CHEMISCHE FABRIK GRUNAU GMBH |
发明人 |
LEHMANN, KLAUS;DOMSCH, ANDREAS, DR.;HAWEL, HANS;SCHUSTER, GREGOR |
分类号 |
D21C5/02;(IPC1-7):D21C5/02 |
主分类号 |
D21C5/02 |
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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