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Journals / Maden Tetkik ve Arama Dergisi / 2021 / Cilt: 164 - Sayı: 164

Optimization of leaching conditions for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite

Hakan ÇİFTÇİ
Bekir ARSLAN
Ayşegül BİLEN
Zeyni ARSOY
Bahri ERSOY
Pages
251–259
Publication Date
2021-04-15
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Mg dissolution process found to be diffusion controlled.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite.
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Key Findings & Data:The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzes showed that the tailing sample contains 39.3wt.% MgO and consist of predominantly lizardite mineral.
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Conclusion & Impact:Mg dissolution process found to be diffusion controlled.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Leaching · Lizardite · Magnesium

Abstract

In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzes showed that the tailing sample contains 39.3wt.% MgO and consist of predominantly lizardite mineral. Hydrochloric acid (HCl) and sulphuric acid (H₂SO₄) were used as acids separately in leaching experiments. Acid concentration, leaching temperature, leaching time, and solid ratio were investigated as leaching parameters and optimized. Maximum magnesium extraction yield was determined to be nearly 98% for both acids under optimum leaching parameters which leaching temperature was 85°C, solid ratio was 20wt.%, leaching time was 120 minutes, and acid concentrations were 6 M for HCl and 4 M for H₂SO₄. In addition, it was determined that the leaching residue as a solid state was mainly composed of amorphous silicate according to the XRD analysis. Dissolution rate data were explained using Jander equation. Mg dissolution process found to be diffusion controlled.

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Cite This Article

ÇİFTÇİ, H., ARSLAN, B., BİLEN, A., ARSOY, Z., ERSOY, B. (2021). Optimization of leaching conditions for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite. Maden Tetkik ve Arama Dergisi, Cilt: 164 - Sayı: 164, 251–259. https://ajindex.com/articles/132662

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