Micron-sized CaCO 3 is usually made by grinding limestone, a top- down process, yielding a product known as ground calcium carbonate GCC, with an edgy particle shape (see Fig. 6a). On the...
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2021.11.1 In this study, we analyzed the crystal structure and phase transformation of CaCO3 synthesized by simple solution method from Ca (NO 3) 2 precursor and Na 2 CO
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The thermodynamically stable form of CaCO3 under normal conditions is hexagonal β-CaCO3 (the mineral calcite). Other forms can be prepared, the denser (2.83 g/cm ) orthorhombic λ-CaCO3 (the mineral aragonite) and hexagonal μ-CaCO3, occurring as the mineral vaterite. The aragonite form can be prepared by precipitation at temperatures above 85 °C; the vaterite form can be prepared by precipitation at 60 °C. Calcite contains calcium atoms coordinated by six oxygen atoms; in ar
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Abstract: Calcium carbonate (CaCO3) is the most widely used filler material in paper, paint, plastic, food, ceramic, cosmetic, medicine and other industries. In the present paper,
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Microbially‐induced calcium carbonate precipitation (MICP) is a bio‐cementation process that can improve the engineering properties of granular soils through the precipitation of calcium...
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2022.6.1 Schematic of the mineral carbonation process using concrete sludge coupled with filtration. into calcium carbonate and the characteristics of the calcium carbonate such as purity, size, and
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Line diagram of the experimental set-up: (1) thermostatted reactor, (2) conductivity cell, (3, 4) digital temperature sound, (5) baffles with nozzle for gas
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2002.1.1 The phase diagram for calcite (CaCO 3) is re-evaluated in relation to dynamic compression and following release from shock. Available shock compression
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