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calcium carbonate pulp paper mill

Jul 24, 2007· Abstract.Calcium carbonateis used in large amounts in thepulpand paper industry as apaper filler. When it is manufactured, thecalcium carbonate wasteis purged from the process. Here we demonstrate that, due to the elevatedcalcium concentrationof 168.5 g kg −1 dry weight (dw), alkaline pH of 12.6 and neutralizing (liming) effect value of 42.4% expressed as Ca equivalents, this waste is a …

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