COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION

Ahmet Deniz Baş

doi:10.30797/madencilik.868572

Research Article

COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION

Year 2021, , 77 - 82, 01.06.2021

Ahmet Deniz Baş

https://doi.org/10.30797/madencilik.868572

Abstract

Recent advances in high-tech applications have highlighted the growing demand on highly pure silicates like quartz. Therefore, purification of quartz ore was determined as the subject of this study performed by pyrometallurgical followed by hydrometallurgical processes. In this research, the effect of thermal treatment (TT) followed by oxalic acid (OA) bleaching of quartz was examined to have a better understanding on the relationship between Fe remaining in concentrate and colour response. The level of TT temperature was found to have a significant effect on the purification of quartz by OA. The maximum Fe rejection rate was observed to occur both for non-treated and TT quartz up to 250°C. TT between 400°C and 900°C showed poor purification performance: decreasing L* value, and increasing a* and b* values. It is important to note that further increase in TT temperature to 1100°C resulted in the poorest bleaching: Fe rejection rate decreased, but colour response improved providing the highest L* value and the lowest a* and b* values. This finding was explained by the formation of dissolution resistant iron silicates. Moreover, the rate of Fe removal from quartz ore and differences observed in its colour response by OA bleaching were explained by changes in crystalline structure and formation of microcracks.

Keywords

Quartz bleaching, Thermal treatment, Oxalic acid, Iron ion, Colour response

References

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KUVARS CEVHERİ SAFLAŞTIRILMASINA PİROMETALURJİK VE HİDROMETALURJİK PROSESLERİN BİLEŞKE ETKİSİ

Year 2021, , 77 - 82, 01.06.2021

Ahmet Deniz Baş

https://doi.org/10.30797/madencilik.868572

Abstract

Yüksek teknoloji uygulamalarındaki güncel gelişmeler, yüksek saflıkta kuvars gibi silikatlara olan artan talebi gözler önüne sermiştir. Bu nedenle, bu çalışmanın konusu pirometalurjik ve devamında hidrometalurjik uygulamalarla kuvars cevherinin saflaştırılması olarak belirlenmiştir. Bu çalışmada, konsantre Fe tenorü ile renk değerleri arasındaki ilişkiyi daha iyi anlamak için kuvarsın termal işlem ve ardından oksalik asit (OA) ile ağartılması araştırılmıştır. Termal işlem sıcaklığının kuvarsın OA ile ağartılması üzerinde önemli bir etkiye sahip olduğu bulunmuştur. Hem termal işlem görmemiş hem de 250°C'ye kadar sıcaklıklarda termal işlem görmüş kuvarstan en yüksek oranda Fe uzaklaştırıldığı gözlenmiştir. 400°C - 900°C arası sıcaklıklarda gerçekleştirilen termal işlem sonucu en başarısız saflaştırma performansları gözlenmiştir: L* değeri düşmüş, a* ve b* değerleri artmıştır. Termal işlem sıcaklığının 1100°C’ye artırılması sonucu ağartma başarısız olmuş: en düşük oranda Fe uzaklaştırılırken, buna karşın en yüksek L* değeri ve en düşük a* ve b* değerlerini sağlayan en başarılı renk değerlerine ulaşılmıştır. Bu bulgu çözünmeye dirençli demir silikatların oluşumu ile açıklanmıştır. Ayrıca kuvars cevherinden okzalik asit liçi ile demir uzaklaştırma oranı ve renk değerlerinde gözlenen farklılıklar; termal işlem sonucu kristalin yapıdaki değişiklikler ve mikro çatlakların oluşumu ile açıklanmıştır.

Keywords

Kuvars ağartma, Termal işlem, Okzalik asit, Demir iyonu, Renk değeri

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Details

Primary Language	English
Journal Section	Research Article
Authors	Ahmet Deniz Baş 0000-0003-4633-9053
Publication Date	June 1, 2021
Submission Date	January 26, 2021
Published in Issue	Year 2021

Cite

APA	Baş, A. D. (2021). COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION. Bilimsel Madencilik Dergisi, 60(2), 77-82. https://doi.org/10.30797/madencilik.868572
AMA	Baş AD. COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION. Madencilik. June 2021;60(2):77-82. doi:10.30797/madencilik.868572
Chicago	Baş, Ahmet Deniz. “COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION”. Bilimsel Madencilik Dergisi 60, no. 2 (June 2021): 77-82. https://doi.org/10.30797/madencilik.868572.
EndNote	Baş AD (June 1, 2021) COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION. Bilimsel Madencilik Dergisi 60 2 77–82.
IEEE	A. D. Baş, “COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION”, Madencilik, vol. 60, no. 2, pp. 77–82, 2021, doi: 10.30797/madencilik.868572.
ISNAD	Baş, Ahmet Deniz. “COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION”. Bilimsel Madencilik Dergisi 60/2 (June 2021), 77-82. https://doi.org/10.30797/madencilik.868572.
JAMA	Baş AD. COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION. Madencilik. 2021;60:77–82.
MLA	Baş, Ahmet Deniz. “COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION”. Bilimsel Madencilik Dergisi, vol. 60, no. 2, 2021, pp. 77-82, doi:10.30797/madencilik.868572.
Vancouver	Baş AD. COMBINED EFFECT OF PYROMETALLURGICAL AND HYDROMETALLURGICAL PROCESSES ON QUARTZ ORE PURIFICATION. Madencilik. 2021;60(2):77-82.

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