Premium
Effect of Polydispersity Index on the Grinding Limits of Highly Concentrated Limestone Suspensions
Author(s) -
Ohenoja Katja,
Saari Juha,
Illikainen Mirja,
BreitungFaes Sandra,
Kwade Arno,
Niinimäki Jouko
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300415
Subject(s) - sodium polyacrylate , grinding , dispersity , agglomerate , particle size , particle size distribution , chemistry , viscosity , particle (ecology) , sodium , chemical engineering , materials science , polymer chemistry , composite material , organic chemistry , raw material , oceanography , engineering , geology
The impact of polydispersity index (PDI) values and doses of two sodium polyacrylates on grinding limits and particle size distributions of highly concentrated limestone suspensions was studied. The results indicated that viscosity and agglomerate particle size, and thus the apparent grinding limit, depended on the sodium polyacrylate dose as well as PDI value of sodium polyacrylate. The higher the sodium polyacrylate dose, the lower the viscosity and the smaller the apparent grinding limit were. The smallest primary particle size, the smallest apparent grinding limit, the narrowest agglomerate particle size distribution, and the lowest viscosity curve were obtained with sodium polyacrylate having a low PDI.