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Separation Technology of Pure Zirconia from Zirconsand by the Ar-H2 Arc Plasma Fusion and Sulfuric Acid Leaching with Microwave Irradiation

Ar-H2플라즈마 건식제련과 마이크로웨이브침출을 통한 지르콘샌드로부터 고순도 지르코니아 분리

Lee, Jeong-Han;Hong, Sung-Kil
이정한;홍성길

  • Received : 2016.04.08
  • Accepted : 2016.05.17
  • Published : 2016.06.30

Abstract

In this study, zircon sand is separated into zirconia and silica by using the Ar-$H_2$ arc plasma refining. And then silica is removed from it by the microwave leaching method to produce a high pure zirconia. Plasma melting consist of two sequential processes; reduction process with Ar gas only followed by refining process with Ar-$H_2$ gas. After cooling in chamber. The solid phase obtained at $240^{\circ}C$ were found to be composed of 20% sulfuric acid solution. The solution was used as a leaching solution with microwave irradiation to obtain a high purity zirconia.

Keywords

zircon sand;zirconia;Ar-$H_2$ plasma dry refining;high purity;microwave irradiation

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Acknowledgement

Supported by : 산업통상자원부