Influence of drying methods on properties of silica
CHEN Pengyu
CHENG Na
MI Shuying
ZHOU Meifang
JIANG Haibo
LI Chunzhong
Abstract：Silica slurry obtained by wet grinding was dried by four drying methods such as freeze drying,spray drying,vacuum drying and oven drying.The influence of drying methods on the physical and chemical properties of silica after grinding was studied by the test of particle diameter,oil absorption value (DBP value),specific surface area (BET value) and microstructure.The results show that silica's median particle diameter(ds0) drops from 9.6 μm to 110 nm and its DBP value and BET value are lower than the pristine silica.The median particle diameter of silica after freeze drying drops to 73 nm,while its DBP value (2.15 mL/g) and BET value (144 m2/g) are nearest to pristine silica.
Keywords：silicawet grindingdrying methodsparticle diameter
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 30-33 )