Yıl 2019, Cilt 9 , Sayı 3, Sayfalar 600 - 615 2019-07-15

Recovery of Cyanide from Effluents: SART Process
Atıklardan Siyanürün Geri Kazanımı: SART Prosesi

Elif YILMAZ [1] , Ersin Y. Yazıcı [2] , Oktay CELEP [3] , Hacı DEVECİ [4]


Gold production from copper-rich gold ores is increasing at worldwide. Owing to the high dissolution of copper minerals in cyanide solutions, technical and economic difficulties have been faced in treatment of those ores. Gold extraction from ores that contain >0.5% Cu is often uneconomic by traditional cyanide leaching. High cyanide concentrations (CN:Cu>4) should be maintained to achieve high gold extractions. This, in turn, leads to an increase in reagent consumptions and environmental risk due to higher use cyanide. SART process was developed in particular for recovery of cyanide from the effluents of intensive cyanidation of Au-Cu ores. The process is applied worldwide and in Turkey at industrial scale. It is based on precipitation of copper in the form of Cu2S from leach solutions under acidic conditions (pH 4-5) by addition of sulphide (as Na2S) leading to the release of free cyanide prior to its recovery. Cu2S is sold as a by-product. The performance of the process is dependent on the addition of sulphur, precipitation period, retention of copper precipitates in the thickener and other parameters. Addition of sulphur should be strictly controlled to obtain a high purity Cu2S precipitate. In this study, chemical principles and factors affecting the performance of SART process are discussed in detail. A general economic analysis of the process in view of capital and operating costs is also presented.

Dünya’da bakır içeriği yüksek altın cevherlerinden altın üretimi giderek artmaktadır. Bakır minerallerinin siyanür çözeltilerinde yüksek oranlarda çözünmesi nedeniyle bu tür cevherlerden altın kazanımında teknik ve ekonomik zorluklar yaşanmaktadır. Bakır içeriği %0,5’ten yüksek cevherlerden geleneksel siyanür liçi ile altın kazanımı genellikle ekonomik değildir. Yüksek altın kazanımlarına ulaşmak için liç işleminin yüksek siyanür konsantrasyonlarında (CN:Cu>4) yapılması gerekmektedir. Bu durum, hem reaktif maliyetini artırmakta hem de daha fazla siyanür kullanımıyla ilgili olarak çevresel riskin artmasına neden olmaktadır. SART prosesi özellikle bakır içeren altın cevherlerinin yoğun siyanür liçi sonrası atıklardan siyanürün geri kazanımı için geliştirilmiş bir prosestir. Dünya’da ve ülkemizde farklı tesislerde endüstriyel olarak uygulanmaktadır. Prosesin temeli, liç çözeltisinden bakırın asidik koşullarda (pH 4-5) sülfür (Na2S) ilavesiyle Cu2S halinde çöktürülmesi ve böylece siyanürün serbest hale getirilerek geri kazanımına dayanmaktadır. Elde edilen Cu2S yan ürün olarak satılmaktadır. Prosesin performansı sülfür ilavesi, çöktürme süresi, bakır çökeleğinin tikinerde bekleme süresi vd. koşullara bağlıdır. Yüksek saflıkta bir Cu2S çökeleği elde etmek için sülfür ilavesinin hassas bir şekilde kontrol edilmesi gerekmektedir. Bu çalışmada, SART prosesinin kimyasal esasları ve performansını etkileyen parametreler detaylı olarak irdelenmiştir. Prosesin ilk yatırım ve işletme maliyetleri ışığında genel bir ekonomik analizi de sunulmuştur.

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Orcid: 0000-0001-8789-0007
Yazar: Elif YILMAZ (Sorumlu Yazar)
Kurum: KARADENİZ TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, MADEN MÜHENDİSLİĞİ BÖLÜMÜ
Ülke: Turkey


Orcid: 0000-0002-8711-0784
Yazar: Ersin Y. Yazıcı
Kurum: KARADENİZ TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, MADEN MÜHENDİSLİĞİ BÖLÜMÜ
Ülke: Turkey


Orcid: 0000-0001-9024-4196
Yazar: Oktay CELEP
Kurum: KARADENİZ TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, MADEN MÜHENDİSLİĞİ BÖLÜMÜ
Ülke: Turkey


Orcid: 0000-0003-4105-0912
Yazar: Hacı DEVECİ
Kurum: KARADENİZ TEKNİK ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, MADEN MÜHENDİSLİĞİ BÖLÜMÜ
Ülke: Turkey


Tarihler

Yayımlanma Tarihi : 15 Temmuz 2019

Bibtex @derleme { gumusfenbil452203, journal = {Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi}, issn = {2146-538X}, address = {}, publisher = {Gümüşhane Üniversitesi}, year = {2019}, volume = {9}, pages = {600 - 615}, doi = {10.17714/gumusfenbil.452203}, title = {Atıklardan Siyanürün Geri Kazanımı: SART Prosesi}, key = {cite}, author = {YILMAZ, Elif and Yazıcı, Ersin Y. and CELEP, Oktay and DEVECİ, Hacı} }
APA YILMAZ, E , Yazıcı, E , CELEP, O , DEVECİ, H . (2019). Atıklardan Siyanürün Geri Kazanımı: SART Prosesi. Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi , 9 (3) , 600-615 . DOI: 10.17714/gumusfenbil.452203
MLA YILMAZ, E , Yazıcı, E , CELEP, O , DEVECİ, H . "Atıklardan Siyanürün Geri Kazanımı: SART Prosesi". Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi 9 (2019 ): 600-615 <https://dergipark.org.tr/tr/pub/gumusfenbil/issue/46153/452203>
Chicago YILMAZ, E , Yazıcı, E , CELEP, O , DEVECİ, H . "Atıklardan Siyanürün Geri Kazanımı: SART Prosesi". Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi 9 (2019 ): 600-615
RIS TY - JOUR T1 - Atıklardan Siyanürün Geri Kazanımı: SART Prosesi AU - Elif YILMAZ , Ersin Y. Yazıcı , Oktay CELEP , Hacı DEVECİ Y1 - 2019 PY - 2019 N1 - doi: 10.17714/gumusfenbil.452203 DO - 10.17714/gumusfenbil.452203 T2 - Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi JF - Journal JO - JOR SP - 600 EP - 615 VL - 9 IS - 3 SN - 2146-538X- M3 - doi: 10.17714/gumusfenbil.452203 UR - https://doi.org/10.17714/gumusfenbil.452203 Y2 - 2018 ER -
EndNote %0 Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi Atıklardan Siyanürün Geri Kazanımı: SART Prosesi %A Elif YILMAZ , Ersin Y. Yazıcı , Oktay CELEP , Hacı DEVECİ %T Atıklardan Siyanürün Geri Kazanımı: SART Prosesi %D 2019 %J Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi %P 2146-538X- %V 9 %N 3 %R doi: 10.17714/gumusfenbil.452203 %U 10.17714/gumusfenbil.452203
ISNAD YILMAZ, Elif , Yazıcı, Ersin Y. , CELEP, Oktay , DEVECİ, Hacı . "Atıklardan Siyanürün Geri Kazanımı: SART Prosesi". Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi 9 / 3 (Temmuz 2019): 600-615 . https://doi.org/10.17714/gumusfenbil.452203
AMA YILMAZ E , Yazıcı E , CELEP O , DEVECİ H . Atıklardan Siyanürün Geri Kazanımı: SART Prosesi. Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi. 2019; 9(3): 600-615.
Vancouver YILMAZ E , Yazıcı E , CELEP O , DEVECİ H . Atıklardan Siyanürün Geri Kazanımı: SART Prosesi. Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi. 2019; 9(3): 615-600.