发明名称 |
FLOATATION PROCESS FOR DEINKING PRINTED WASTE PAPER |
摘要 |
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. |
申请公布号 |
CA1325084(C) |
申请公布日期 |
1993.12.14 |
申请号 |
CA19890595212 |
申请日期 |
1989.03.30 |
申请人 |
LEHMANN, KLAUS |
发明人 |
LEHMANN, KLAUS;DOMSCH, ANDREAS;HAWEL, HANS;SCHUSTER, GREGOR |
分类号 |
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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