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http://dx.doi.org/10.7844/kirr.2016.25.3.49

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

Lee, Jeong-Han (Materials Science&Engineering, Chonnam National Univ.)
Hong, Sung-Kil (Materials Science&Engineering, Chonnam National Univ.)
Publication Information
Resources Recycling / v.25, no.3, 2016 , pp. 49-54 More about this Journal
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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