한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제29권12호
  • /
  • Pages.963-969
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  • 1992
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  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Precipitation Stripping법에 의한 고순도 Oxalate 분말의 제조

Preparation of High-purity Zinc Oxalate Powder by the Precipitation Stripping Method

  • 이재천 (한국자원연구소 희유금속연구그룹) ;
  • 이강인 (한국자원연구소 희유금속연구그룹) ;
  • 유효신 (한국자원연구소 희유금속연구그룹)
  • 발행 : 1992.12.01
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초록

This paper describes the feasibility for a direct production of zinc oxalate powders from zinc-loaded D2EHPA solutions combining the purification and the precipitation in one operation unit. This process has the potential as an alternative to conventional method for the synthesis of zinc oxide precursor particles from the hydrometal-lurgical processes. Zinc was extracted into D2EHPA in kerosene and then zinc-loaded D2EHPA solution was emulsified with oxalic acid-HCl solution to precipitate zinc oxalate powder, which was readily calcined to zinc oxide. The precipitation kinetics and yield were sensitive to experimental conditions. The morphology, size and size distribution of the zinc oxalate powders varied with zinc/oxalate ion riatio, temperature, and the presence of SPAN 60, which affected nucleation, growth, and the emulsion characteristics.

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참고문헌

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