The precipitation kinetics of nickel powder produced by hydrogen reduction in commercial batch autoclaves

Freeman Ntuli, Alison Emslie Lewis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The active particulate processes in the precipitation of nickel powder by hydrogen reduction were investigated on an industrial scale by analyzing the evolution of the particle size distribution (PSD) and its derived moments. Based on this information, an appropriate model based on the moment form of the population balance equation (PBE) was tested. Nickel powder samples were collected from the industrial autoclave after each successive batch reduction (densification) and the PSD analysed using an image analysis technique. The PSD data was then transformed into moments and the experimental values were compared with those simulated using a model based on the moment form of the PBE. The process was characterized by significant aggregation in the first ten densifications followed by a dominance of either aggregation and/or breakage in the later stages of the cycle.

Original languageEnglish
Title of host publicationIAENG Transactions on Engineering Technologies, Volume 4 - Special Edition of the World Congress on Engineering and Computer Science
Pages301-312
Number of pages12
DOIs
Publication statusPublished - 2010
EventInternational Conference on Advances in Engineering Technologies - San Francisco, CA, United States
Duration: 20 Oct 200922 Oct 2009

Publication series

NameAIP Conference Proceedings
Volume1247
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Advances in Engineering Technologies
Country/TerritoryUnited States
CitySan Francisco, CA
Period20/10/0922/10/09

Keywords

  • nickel powder
  • particulate processes
  • population balance
  • precipitation

ASJC Scopus subject areas

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'The precipitation kinetics of nickel powder produced by hydrogen reduction in commercial batch autoclaves'. Together they form a unique fingerprint.

Cite this