An acid-resistant calcium carbonate and a method for producing the same

Abstract

The application discloses acid-resistant calcium carbonate and a preparation method thereof, and belongs to the technical field of calcium carbonate filler production. The acid-resistant calcium carbonate is prepared by taking industrial waste carbide slag as a calcium source, obtaining calcium hydroxide slurry by impurity removal, adding sodium polyacrylate and sodium hexametaphosphate for stirring and dispersing, then passing carbon dioxide for carbonization, adding a surfactant for ultrasonic activation after carbonization, and finally adding zirconium oxychloride and sodium silicate in sequence. The acid-resistant calcium carbonate overcomes the shortcomings of traditional silicon dioxide and titanium dioxide coated calcium carbonate products, and has a dense, uniform and stable coating layer, excellent acid resistance and mechanical properties, and can be applied to more acidic environments, so that the application range of the calcium carbonate is effectively expanded.

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