Preparation of Chain-Like Nano Carbonate on Composite Dolomite Surface
ZHOU Shou-fa
YANG Yu-fen
WANG Qi-bao
DONG Huai
HE Jian
GAI Guo-sheng
Abstract：Based on the principle of heterogeneous nucleation, the reaction parameters including temperature, calcium hydroxide concentration and zinc sulfate additive, were adjusted. The chain-like nano calcium carbonate coating layer was formed on the composite dolomite surface in the Ca(OH)_2-H_2O-CO_2 system. The effects of different reaction parameters on the shape of nano calcium carbonate were analyzed using SEM and XRD. The results indicate that a chain-like nano calcium carbonate was formed on the dolomite particle surface when the reaction temperature is 25℃, zinc sulfate is 4% of calcium hydroxide weight, calcium hydroxide con-centration is 0.3 mol/L. The aspect ratio of nano calcium carbonate is 7:1. Enhancing the re-action concentration of system can reduce the weight of zinc sulfate.
Keywords：composite dolomitechain-likenano calcium carbonatezinc sulfate
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 681-684 )