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Journals / Madencilik Dergisi / 2005 / Cilt: 44 - Sayı: 1

The use of polysaccharides as depressant in flotation and their adsorption mechanisms

Polisakkaritlerin flotasyonda bastırıcı olarak kullanımı ve soğurum mekanizmaları

Özlem BIÇAK
ZAFİR EKMEKÇİ
Pages
19–31
DOI
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AI Summary & Key Takeaways

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

In this paper, adsorption mechanisms of various polysaccharides having different chemical and structural properties are discussed in detail.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The use of organic depressants in flotation remained restricted for very long times since they were considered as non-selective depressants.
📊
Key Findings & Data:However, recent research works have shown that polysaccharides, particularly with modified chemical structure, could be used as selective depressants and they were promising selective depressants that could replace the inorganic modifiers in differential flotation of sulphide minerals.
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Conclusion & Impact:In this paper, adsorption mechanisms of various polysaccharides having different chemical and structural properties are discussed in detail.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The use of organic depressants in flotation remained restricted for very long times since they were considered as non-selective depressants. However, recent research works have shown that polysaccharides, particularly with modified chemical structure, could be used as selective depressants and they were promising selective depressants that could replace the inorganic modifiers in differential flotation of sulphide minerals. The main adsorption mechanism of the polysaccharides occurs through interaction with the metal oxide/hydroxide species at the surface of minerals. In addition to that depending on chemical structure of the polysaccharides and surface properties of the minerals, adsorption can also take place through hydrogen and hydrophobic bonding. In this paper, adsorption mechanisms of various polysaccharides having different chemical and structural properties are discussed in detail.

Özet

Organik bastırıcıların flotasyonda kullanımı seçimli olmadıklarının düşünülmesi nedeniyle sınırlı kalmıştır. Ancak, son yıllarda yapılan araştırmalarda polisakkarit türü organik bastırıcıların, özellikle CMC gibi bir fonksiyonel grupla yer değiştirme yaparak kimyasal yapısı yeniden düzenlenmiş polisakkaritlerin, seçimli bastırıcı olarak kullanılabilecekleri ve hatta sülfürlü minerallerin seçimli flotasyonunda kullanılan inorganik bastırıcıların yerini alabilecekleri ortaya konmuştur. Polisakkaritlerin temelde mineral yüzeyinde bulunan metal oksit/hidroksit bileşikleri ile tepkimeye girerek soğruldukları belirtilmektedir. Bununla beraber, kullanılan polisakkarit bastırıcının kimyasal yapısı ve minerallerin yüzey özelliklerine bağlı olarak hidrojen ve hidrofobik bağ oluşturarak da soğurum gerçekleşebilmektedir. Bu yazıda farklı kimyasal ve yapısal özelliklere sahip polisakkarit türü bastırıcıların soğurum mekanizmaları detaylı olarak tartışılmıştır.

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Cite This Article

BIÇAK, Ö., EKMEKÇİ, Z. (2005). The use of polysaccharides as depressant in flotation and their adsorption mechanisms. Madencilik Dergisi, Cilt: 44 - Sayı: 1, 19–31. https://ajindex.com/articles/282213

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