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http://dx.doi.org/10.7844/kirr.2013.22.1.42

Fabrication of Mg(OH)2 from Ferro-Nickel Slag  

Park, Soo Hyun (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Chu, Yong Sik (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Song, Hun (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Lee, Jong Kyu (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Seo, Sung Kwan (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Publication Information
Resources Recycling / v.22, no.1, 2013 , pp. 42-47 More about this Journal
Abstract
Ferro-Nickel slag is a byproduct of Ferro-Nickel manufacturing process. Ferro-Nickel slag mostly discarded or used as aggregates despite having useful ingredients such as magnesium oxide and silicon oxide. This study tried to extract process for Mg ion using $H_2SO_4$ solution. And remove impurities and get high purity $Mg(OH)_2$ using NaOH. Mg ion was extracted with the Fe ion and other Ferro-Nickel slag composition by $H_2SO_4$ solution. It is important to control the pH because remove impurities and obtain high-purity $Mg(OH)_2$. The impurities were removed by precipitation of the hydroxides. After this process, we added NaOH and high-purity $Mg(OH)_2$ was obtained.
Keywords
Ferro-Nickel Slag; $H_2SO_4$ Solution; Mg ion; $Mg(OH)_2$; Precipitation;
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