Ground calcium carbonate, commonly referred to as GCC, is primarily based on limestone and chalk in the UK, though marble stone is imported and processed at a few locations. Generally, the processing includes washing, sorting of undesirable contaminants, grinding, size classification of particles and possibly drying.
T130x ultrafine grinding mill is a fine powder and ultrafine calcium carbonates powder production machine which can meet your fine particle processing, micronizing, fine dry grinding, air classification and other comminution requirements. The ultrafine mill is a dry air swept media mill used for the production of fine calcium carbonates powders typically below 45 microns. http://www.crusherindustry.com/index.php/ultrafine-mill/
The grinding capacity is from 4-13 TPH according to different models. The feed calcium carbonates raw material must be suitable for pneumatic conveying, typically all below 3 mm. We provide complete set of calcium carbonate processing plant, such as carbonate calcium crusher, carbonate calcium grinding mill, vibrating screen, belt conveyor, classifier, separation machine, washing plant etc. Production process flow of precipitated calcium carbonate
The raw lime stone is first screened & washed to remove undesized material and then it is fed to the vertical shaft lime kiln for preheating, calcinations & cooling operation. Here process is controlled automatically and quick lime & CO2 gas are obtained. Then quick lime is hydrated with process water in batch reactor and screened to remove lime impurity. The line slurry is then further processed to reach at designed process conditions, required in reactor for carbonation. The CO2 gas from lime kiln is cooled and washed in a vertical washer and then it is charged to the batch reactor. The required conditions are maintained in reactor to obtain different grade of precipitated calcium...
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