Preparation method of superfine active calcium carbonate functional filler special for PVC

The invention discloses a preparation method of a superfine active calcium carbonate functional filler special for PVC. The method includes the main steps of: introducing kiln gas into a high concentration calcium hydroxide slurry to conduct rapid carbonization, then adding heavy calcium carbonate p...

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Hauptverfasser:	GU QINGLEI, GU ZONGJUN, MENG JUNLIN, GAO JIANJIAN, CAO JIYONG, ZHANG XIAOTONG, NI BOXIANG, TAO SHENJIE, GU FEIFEI, XU YUKUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY
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creator	GU QINGLEI GU ZONGJUN MENG JUNLIN GAO JIANJIAN CAO JIYONG ZHANG XIAOTONG NI BOXIANG TAO SHENJIE GU FEIFEI XU YUKUN
description	The invention discloses a preparation method of a superfine active calcium carbonate functional filler special for PVC. The method includes the main steps of: introducing kiln gas into a high concentration calcium hydroxide slurry to conduct rapid carbonization, then adding heavy calcium carbonate powder accounting for 20-30% of the weight of synthetic calcium carbonate to prepare a mixed slurry of calcium carbonate, employing a vertical bead mill to perform grinding, mixing the grinded slurry with a high polymer emulsion, and under the high shear emulsification action of a homogenization pump, making calcium carbonate dispersion and high polymer emulsion cladding finished synchronously, finally carrying out filtration and drying, thus obtaining the product. The prepared product has a particle size distribution in the range of 1.0-1.5 micrometers, an activation degree over 99%, an oil absorption value less than 15g/100gCaCO3, and is free of agglomeration phenomenon, thus being able to serve as a functional fi
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subjects	CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY
title	Preparation method of superfine active calcium carbonate functional filler special for PVC
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