Verfahren zum Ablösen von Druckfarbe aus Altpapier,申请号DE1999510199-传众专利搜索

Verfahren zum Ablösen von Druckfarbe aus Altpapier

申请公布号：DE59910199(D1)

申请号：DE1999510199

申请日期：1999.03.22

申请公布日期：2004.09.16

申请人：

KALKFABRIK NETSTAL AG, NETSTAL

发明人：MARTI, HEINZ;HOEHENER, URS A.;SEWING, DIRK

分类号：D21C5/02;D21H11/14;(IPC1-7):D21C5/02

主分类号：D21C5/02

摘要：<p>To separate ink and/or other foreign matter from used paper, a suspension of the used paper is prepared using water containi tenside. The pH value is set to at least 8 by an alkali reagent containing or composed of lime. The alkali reagent is slaked lime and/or calcinated lime in a solid form or as a watery suspension containing it or compose it. A watery lime suspension is used as the alkali reagent. To set the pH value at least at 8, the lime product and preferably calcium hydroxide, is used at a rate of 0.05-1.5 wt% and preferably 0.2-1.0 wt% and especially 0.3-0.6 wt%. Additional additives be used of silicate of soda, bleaching agents, or optical brighteners in the suspension.</p>