Effect of feeding condition on crystal size distributions of mono-dispersed SrSO4 particles produced via PEI-Assisted double-jet reactive crystallization

Takashi Mikami, Takahiro Sakuma, Izumi Hirasawa

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Micron-sized SrSO4 particles having mono-dispersed/narrow distributions have been produced with a double-jet semi-batch reactive crystallizer. Slow molar feedings over a short time maintained proper supersaturation levels and result in narrow distributions due to the prevention of agglomeration growth of small primary precipitates. Furthermore, polyethylenimine (PEI) is a suitable growth/agglomeration inhibitor for sulfate precipitation, e.g., SrSO4 and PbSO4, and effectively reduced particle sizes leading to single-micron products. Besides feeding conditions, in the present work, the influence of PEI dosage on crystal size distributions (CSDs) is investigated. The controlled double-jet feeding using a polyelectrolyte additive such as PEI will be a powerful methodology to obtain agglomeration-free uniform micro-powders as a final solid product.

Original languageEnglish
Pages (from-to)300-307
Number of pages8
JournalJOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume43
Issue number3
DOIs
Publication statusPublished - 2010 Mar 25

Keywords

  • Double-jet crystallization
  • Mono-dispersed particles
  • Polyelectrolyte additive

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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