GOSSAN YAPILI CEVHERLERDE Au/Ag KAZANIMI ÜZERİNE SİYANÜRLEME PARAMETRELERİNİN ETKİSİ

Yıl 2018, Cilt: 7 Sayı: 3, 1203 - 1208, 28.12.2018

Emine Yoğurtcuoğlu , İbrahim Alp

https://doi.org/10.28948/ngumuh.502455

Cited By: 1

Öz

   Bu çalışma
da, Niğde Ulukışla Gossan yapılı altın gümüş cevherlerine, alkali ortamda
siyanür parametresinin etkinliği incelenmiştir. Cevherin mineral yapısında;
demir cevherleri (limonit-götit-lepidokrosit), çinko mineralleri
(smitsonit-hidrozinkit-hemimorfit), kurşun mineralleri (serüzit-plumbojarosit)
ve gang mineralleri (kil-kuvars-kalsit) bulunmaktadır. Tüm bu minerallerin yanı
sıra cevherdeki farklı jarosit formları da Gossan cevheri yapısı ile uyumludur.
Cevher mikroskobisi ile altının limotit-götit-lepidokrosit mineralleri ile
beraber bulunduğu belirlenmiştir. Direk siyanürleme testlerinde altın ve gümüş
düşük verimlerle kazanılmıştır. Bu amaçla, siyanürleme öncesinde sıcak alkali
kireç ön işlemi ve ardından da siyanür araştırmaları gerçekleştirilmiştir.
Siyanür miktarı tayini 24 saat ve 60°C sıcaklıkta, 0,125-4 g/L NaCN
konsantrasyonları arasında, siyanür süre araştırmaları ise, 1,5 g/L NaCN
konsantrasyonunda, 60 °C sıcaklıkta, 1-84 saat arasındaki sürelerde
gerçekleştirilmiştir. Sonuçta, altının % 64-97 arasına, gümüşün de % 55-76
arasına kadar arttığı belirlenmiştir. 

Anahtar Kelimeler

Gossan, altın/gümüş, jarosit, kireç, siyanür prosesi

THE IMPACT OF THE CYANIDATION PARAMETERS ON Au/Ag RECOVERY IN GOSSAN STRUCTURED ORES

Öz

In this study, the
activity of cyanide parameter in alkali media was investigated in gold-silver
ores of Niğde-Ulukışla-Gossan. Mineral structures of the ore are; iron ore (limonite-goethite-lepidocrocite),
zinc minerals (smitsonite-hydrozincite-hemimorphite), lead minerals (cerrussite-plumbojarosite),
and gangue minerals (clay-quartz-calcite) are present. In addition to all these
minerals, different jarosite forms in the ore are also compatible with Gossan
ore structure. It has been determined with the ore microscope that gold
together with limonite-goethite-lepidocrocite minerals. In the direct cyanide
tests, gold and silver were gained with low yields. For this purpose, hot
alkali lime pre-treatment followed by cyanide investigations was carried out
before cyanidation. The amount of cyanide was determined at 24-hours and 60°C
temperature, between 0.125-4g/L NaCN concentrations, while cyanide time studies
were carried out at a concentration of 1.5g/L NaCN at 60°C for 1-84hours. As a
result, it has been determined that between 64-97% Au and 55-76% Ag are
increased.

 

Anahtar Kelimeler

Gossan, Gold/Silver, Jarosite, Lime, Cyanide process

Kaynakça

• [1] LA BROOY, S.R., LİNGE, H.G., WALKER, G.S., “Review of gold extraction from ores”, Minerals Eng., 7(10), 1213-1241, 1994.
• [2] RİGUELME, J.A.Q., “Improved process development for complex silver ore through systematic, advanced mineral characterisation”, Doktora tezi, Queensland Üniversitesi, Mineral Enstitüsü, Avustralya, 2014.
• [3] KOMNİTSAS, C., POOLEY F.D., “Mineralogical characteristics and treatment of refractory gold ores”, Minerals Engineering, 2, 4, 449-457, 1989.
• [4] ROSHAN, B.B., “Hydrometallurgical processing of precious metal ores”, Mineral Processing and Extractive Metallurgy, 6, 67-80, 1990.
• [5] SİNADİNOVİC, D., KAMBEROVİC, Z., VAKANJAC, B., “Refractory gold ores, characteristics and methods of their procession”, VIII Balkan Mineral Processing Conference, Yugoslavia. 411-418, 1999.
• [6] GUPTA, C.K., MUKHERJEE, T.K., “Hydrometallurgy in extraction processes”, Vol. I, Boston, 2000.
• [7] LUNT D., WEEKS, T., “Process flowsheet selection”, Development in min. Proc., 15, 73-95, 2005.
• [8] IGLESİAS, N., CARRANZA, F., “Refractory gold bearing ore: A review of treatment methods and recent advances in biotechnological techniques”, Hydrometallurgy, 34. 383-395, 1994.
• [9] DUNN, J.G., CHAMBERLAİN, A.C., “The recovery of gold from refractory arsenopyrite concentrates by pyrolysis-oxidation”, Minerals Engineering, 10, 919-928, 1997.
• [10] ÇELİK, H., “Cevher Mineralojisine Göre Altın Üretim Yönteminin Tayini”, C.B.Ü. Soma Meslek Yüksekokulu Teknik Bilimler Dergisi, 1, 1, 55-77, 2004.
• [11] DELFİNİ, M., FERRİNİ, M., MANNİ, A., MASSACCİ, P., PİGA, L., “Arsenic leaching by Na2S to decontaminate tailings coming from colemanite processing”, Minerals Engineering, 16, 45-50, 2003.
• [12] AWE, S.A., “Selective removal of impurity elements from Maurliden Vastra complex sulphides flotation concentrate”, Yüksek Lisans Tezi, Lulea Üniversitesi, Luela, 2008.
• [13] COSTA, M.C., “Hydrometallurgy of gold: New perspectives and treatment of refractory sulphide ores”, Fizykochemiczne Problemy Mineralurgü, 63, 63-72, 1997.
• [14] AMPOFO, N.A., “The impact of jarosites in BIOX® PRODUCT on CIL Processes - A Case Study Of Anglogold Ashanti (Obuasi Mine)”, YL Tezi, FBE, Kwame Nkrumah Üniversitesi, 2015.
• [15] ROCA, A., VİÑALS, J., ARRANZ, M., CALERO, J., “Characterization and alkaline decomposition/cyanidation of beudantite−jarosite materials from Rio Tinto gossan ores”, [J]. Canadian Metallurgical Quarterly, 38(2): 93−103, 1999.
• [16] ROCA A., PATİNO F., VİNALS, J., NUNEZ, C., “Alkaline decomposition- cyanidation kinetics of argentojarosite”, Hydrometallurgy, 33, 341-358, 1993.
• [17] PATİÑO, F., ROCA, A., REYES, M., CRUELLS, M., RİVERA I., HERNÁNDEZ, L. E., “Kinetic modeling of the alkaline decomposition and cyanidation of argentojarosite”, J. Mex. Chem. Soc. 54(4), 216-222, 2010.
• [18] SALİNAS, E., ROCA, A., CRUELLS, M., PATİNO, F., CORDOBA, D.A., “Characterization and alkaline decomposition–cyanidation kinetics of industrial ammonium jarosite in NaOH media”, Hydrometallurgy, 60, 237–246, 2001.
• [19] DUTRİZAC, J.E., JAMBOR, J.L., “Jarosites and their application in hydrometallurgy”, Mineralogy and Geochemistry. 40(1): 405-452, 2000.
• [20] GUİLBERT, J.M., “The Geology of Ore Deposits, Supergene Sulfide Enrichment”, Charles Frederick Park, W. H. Freeman. 796-836, 1985.
• [21] PERTILLE, J., HARTMANN, L.A., DUARTE, S.K., ARENA, K., ROSA, M.L.C.C., BARBOZA, E.G., “Gossan characterization in the Quaraí and Los Catalanes amethyst geode districts (Brazil and Uruguay), Paraná volcanic province, using rock geochemistry and gamma-spectrometry”, Journal of Geochemical Exploration, 124, 127–139, 2013.
• [22] LADAME, G,. “Bolkar Maden Altın Cevheri”, Maden Tetkik Arama Mecmuası Sayı 3, Cilt 4, S.131-139, Ankara, 1938.
• [23] ACARKAN, N., “Bolkardağ madenine ait altın-gümüş-kurşun cevherlerinin değerlendirilme olanaklarının araştırılması”, Doktora Tezi, İTU, page 127 (in Turkish), 1984.
• [24] ONAL, G., ACARKAN, N., ACARKAN, S., “Bolkardağ Madenine Ait Altın-Gümüş-Kurşun Cevherini Zenginleştirme Olanakları”, İ.T.U., 1991.
• [25] ACARKAN, N., KANGAL, O., BULUT, G., ÖNAL, G., “The comparison of gravity separation and flotation of gold and silver bearing ore”, Conference in Minerals Engineering, 3–4 February, Lulea, Sweden, 3–13, 2009.
• [26] ACARKAN, N., BULUT, G., GÜL, A., KANGAL, O., KARAKAŞ, F., KÖKKILIÇ, O., ÖNAL, G., “The effect of collector's type on gold and silver flotation in a complex ore”, Separation Science and Technology, 46. 283–289, 2011.
• [27] YOĞURTCUOĞLU, E, ALP İ., CELEP O., SERBEST, V., “Bolkardağ Au/Ag cevherinin siyanürleme performansini iyileştirmek için alkali ön işlemin değerlendirilmesi”, 23rd International Mining Congress & Exhibition of Turkey, 959-965, Antalya, Türkiye, 2013a.
• [28] YOĞURTCUOĞLU, E, ALP İ., CELEP O., SERBEST, V., “Applied of KOH leaching as pretreatment process for Bolkardağ Au/Ag ore”, 15. BMPC (XV Balkan Mineral Processing Congress), 12-16 Haziran 2013, II. Cilt, 762-765, Sozopol, Bulgaristan, 2013b.
• [29] YOĞURTCUOĞLU, E.; ALP İ., “Performance of Cyanidation the Oxidized Au/Ag Ore”, 14. IMPS (Proceedings of 14th International Mineral Processing Symposium), Kuşadası/Türkiye, 2014.
• [30] YOĞURTCUOĞLU, E., “Oksitlenmiş Refrakter Au/Ag Cevherlerinin Siyanürlenmesinde Öğütme ve Alkali İşlemin Etkisi”, Doktora Tezi, FBE., K.T.U., Trabzon, Türkiye, 2017.
• [31] ACME Laboratuvarı, ANK12000098-1/2, Raporlama Tarihi: 5-12 Mart 2012