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Characteristics of micronized blue ceramic pigments using electric arc furnace dust

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2019, 29(3), pp.115-122
  • DOI : 10.6111/JKCGCT.2019.29.3.115
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 23, 2019
  • Accepted : June 11, 2019
  • Published : June 30, 2019

Hye Jin Kim 1 Han Kyu Sung 1 Kwangtaek Hwang 1 Nahm, Sahn 2 Kim Jinho 1

1한국세라믹기술원
2고려대학교

Accredited

ABSTRACT

Electric arc furnace dust (EAFD), which is a dust waste generated in the steel manufacturing process, containsheavy metals. Recently, researches of recycling a large amount of valuable metals such as zinc and iron in EAFD arebeing actively carried out. In this study, EAFD is used as a substitute for cobalt in blue ceramic pigments without anypretreatment. Then, the synthesized blue ceramic pigment using EAFD was micronized and formulated as a ceramic ink forinkjet printer. The particle size distribution, crystal structure and color characteristics during the micronization process wereinvestigated for the development of ceramic ink. Co0.75Zn(EAFD)0.25Al2O4 ceramic pigments showed excellent blue coloricproperties and monomodal distribution through micronization process. The average particle size of Co0.75Zn(EAFD)0.25Al2O4ceramic pigments after 3 hours of milling was 0.271 μm, which is smaller than 0.303 μm, which is the average particle sizeof CoAl2O4 ceramic pigments without EAFD after 5 hours of milling. Especially, it was confirmed that Co0.75Zn(EAFD)0.25Al2O4ceramic pigments showed a color difference (ΔE*ab) value of 5.67, which smaller than ΔE*ab value of CoAl2O4 duringmicronization. These results show that EAFD can be used as a raw material for a blue ceramic pigment by replacingexpensive cobalt without any pretreatment.

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