发明名称 |
PROCESS FOR SEPARATING FILLERS FROM WASTE PAPER BY FLOTTATION |
摘要 |
<p>A process for the separation of fillers and paper fibres by flotation is characterised in that following flotation of the printing ink the aqueous suspensions of pulp are treated as follows: 1. water-soluble salts of trivalent metal ions are added to bring the pH to between 4.5 and 9, and 2. flotation is carried out after the addition of from 0.1 to 8 g of anionic surfactants per kg of pulp.</p> |
申请公布号 |
EP0299138(B1) |
申请公布日期 |
1992.01.15 |
申请号 |
EP19880103505 |
申请日期 |
1988.03.07 |
申请人 |
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN |
发明人 |
HORNFECK, KLAUS;VON RYBINSKI, WOLFGANG, DR. |
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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