Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation

Journal of Inorganic Materials

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Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation

XU Wang-Sheng; HE Bing-Zhong; JIN Shi-Wei; XUAN Ai-Guo

Dept. of Chem. Eng.; Wuhan Institute of Chemical Technology; Wuhan 430073; China

Received:2001-02-07 Revised:2001-04-04 Published:2001-09-20 Online:2001-09-20

Abstract

Abstract: The preparation process of nanometer calcium carbonate(CaCO₃) by multistage spray carbonation was studied. The effects of the conditions of spray carbonation and additive dosage on the average particle size of nanometer CaCO₃ were discussed systematically. The primary particle size of carbonated sediment was about 30nm by vacuum desiccation. Then the active nanometer CaCO₃particles ranged from 30nm to 40nm were obtained by means of surfaction.

Key words: nanometer calcium carbonate, multistage spray carbonation, particle size, mass transfer coefficient

CLC Number:

TB383

XU Wang-Sheng,HE Bing-Zhong,JIN Shi-Wei,XUAN Ai-Guo. Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation[J]. Journal of Inorganic Materials.

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Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation

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