Dispersion of carbon black by a media mill and correlation of its rate constant with beads impact energy

Yasuhiro Yamamoto, Rikio Soda, Junya Kano, Fumio Saito

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We investigated the dispersion of a carbon black sample by a bead mill under wet conditions and assessed the correlation of its rate constant with the bead impact energy. The carbon black used in the experiment is fine powder of less than 100. nm diameter, dispersed in solvent by a bead mill under different milling conditions. The degree of dispersion was defined by a normalized number of coarse particles of carbon black in the slurry; it was correlated with dispersion time, representing an empirical equation. As for the bead impact energy, we simulated the motion of the beads in the mill under wet conditions in different conditions using the Discrete Element Method (DEM). The impact energy of the beads was determined from the bead velocities in different conditions. Results show that the dispersion rate constant of the carbon black sample in the mill is fairly correlated with the impact energy of the beads. It is well correlated with the impact energy of the beads is based on the normal impact energy.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalPowder Technology
Volume219
DOIs
Publication statusPublished - 2012 Mar

Keywords

  • Bead mill
  • Carbon black
  • DEM simulation
  • Dispersion
  • Impact energy

ASJC Scopus subject areas

  • Chemical Engineering(all)

Fingerprint

Dive into the research topics of 'Dispersion of carbon black by a media mill and correlation of its rate constant with beads impact energy'. Together they form a unique fingerprint.

Cite this