Reactivity of meta-talc in sodium hydroxide medium

International Conference Building Materials, Products and Technologies

土木建筑工程

Bednárek, J.^1 ; Ptáek, P.^1 ; Šoukal, F.^1 ; Havlica, J.^1 ; Novotný, R.^1 ; Másilko, J.^1 ; Šiler, P.^1

Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyova 118, Brno

612 00, Czech Republic^1

关键词: Alkali medium;    Crystallinities;    Isothermal calorimetry;    Luzenac;    Material structure;    NaOH solutions;    Stirred ball mills;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/379/1/012003/pdf
DOI  :  10.1088/1757-899X/379/1/012003

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

This work deals with the reactivity of XRD amorphous delaminated and dehydroxylated talc phase (meta-talc), in alkali medium. Talc ore Luzenac H70 was treated in a stirred ball mill (attritor) for 30; 60 and 90 min with subsequent thermal treatment at 700°C; 750°C and 800°C. Reactivity of mechanochemically and thermally treated talc ore in NaOH solution was studied using isothermal calorimetry. An influence of material crystallinity and amount of water coordinated in material structure after milling on its reactivity in alkali medium was studied.