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http://dx.doi.org/10.7844/kirr.2013.22.1.48

Manufacture of High Purity KI Crystal by Fractional Crystallization Method from Aqueous Waste of KI  

Kim, Dae Weon (Townmining Company Ltd.)
Jang, Seong Tae (Townmining Company Ltd.)
Choi, Sung Bum (Townmining Company Ltd.)
Publication Information
Resources Recycling / v.22, no.1, 2013 , pp. 48-54 More about this Journal
Abstract
A laboratory study was carried out to recover KI crystals with high purity by using fractional crystallization method from a waste solution generated from the production of polarizing film for LCD industry. The waste solution contains 1.3% KI, and other impurities such as B, Na, and PVA etc. With purity higher than 99.5% KI crystals were produced through refining process such as vacuum evaporation, fractional crystallization, filtering, and 24hr aging. Also the concentrated impurities were eliminated about 70% by recrystallization.
Keywords
Resources recycling; Potassium iodide; Boron compound; Fractional crystallization; Vacuum evaporation; Recrystallization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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