Sülfürik Asit Liçi ile Çinko Oksit Cevherinden Çinko Geri Kazanımı

Yıl 2019, Cilt: 40 Sayı: 1, 179 - 185, 22.03.2019

Özlem Kaya Funda Serin Çakır

https://doi.org/10.17776/csj.463775

Cited By: 1

Öz

Bu çalışmada sülfürik
asit kullanılarak liç ile çinko oksit cevherinin kazanımı araştırılmıştır. Liç
süresi, asit konsantrasyonu, liç sıcaklığı, partikül boyutu ve katı/sıvı oranı
gibi bazı parametrelerin etkileri maksimum çinko ekstraksiyonu ve minimum asit tüketimi
için araştırılmıştır. Optimum liç koşulları 120 dakika liç süresi, 55 g/L H₂SO₄
asit konsantrasyonu, 25 ˚C liç sıcaklığı, -780 µm partikül boyutu ve 1/10
katı/sıvı oranı olarak belirlenmiştir. Bu optimum koşullarda, %93.42 çinko
ekstraksiyonu ve 1.58 (ton H₂SO₄/ çözünen ton Zn) asit
tüketimi elde edilmiştir.

Anahtar Kelimeler

Çinko oksit cevheri, asit liç, sülfürik asit

Recovery of Zinc from Zinc Oxide Ore by Sulfuric Acid Leaching

Öz

This study investigates the extraction from zinc
oxide ore by leaching using sulfuric acid. Effects of some parameters such as
leaching time, acid concentration, leaching temperature, particle size and
solid/liquid ratio were studied for maximum zinc extraction and minimum acid
consumption. Optimum leaching conditions were determined to be 120 minutes of
leaching time, 55 g/L H₂SO₄ of acid concentration, 25 ˚C
of leaching temperature, -780 µm of particle size and a solid/liquid ratio of
1/10. In these optimum conditions, 93.42% of zinc extraction and 1.58 (ton H₂SO₄/dissolved
ton Zn) of acid consumption were achieved.

Anahtar Kelimeler

acid leaching, Zinc oxide ore, sulfuric acid

Kaynakça

• [1]. Abdel-Aal E.A., Kinetics of Sulfuric Acid Leaching of Low-Grade Zinc Silicate Ore, Hydrometallurgy, 55 (2000) 247-254.
• [2]. Havlik T., Turzakova M., Stopic S., Friedrich B., Atmospheric Leaching of EAF Dust with Diluted Sulphuric Acid, Hydrometallurgy, 77 (2005) 41-50.
• [3]. Xu H., Wei C., Li C., Fan G., Deng Z., Li M., Li X., Sulfuric Acid Leaching of Zinc Silicate Ore Under Pressure, Hydrometallurgy, 105 (2010) 186-190.
• [4]. Bodas M.G., Hydrometallurgical Treatment of Zinc Silicate Ore from Thailand, Hydrometallurgy, 40 (1996) 37-49.
• [5]. Canbazoğlu M., Kaya Ö., Kulaksız M.I., Nizamoğlu Y.S., Sulphuric Acid Leaching of Zinc from Low Grade Lead&Zinc Ores, Proceedings of the XIII Balkan Mineral Processing Congress, 2 (2009) 587-593.
• [6]. Uysal G., The Evaluation of Low Grade Zinc Oxide Ore of Niğde Öküzgönü Tepe Using Sulfuric Acid Leaching and Solvent Extraction, MSc thesis, Cumhuriyet University, Department of Mining Engineering, (2011) Sivas, Turkey.
• [7]. Souza A.D., Pina P.S., Lima E.V.O., Silva C.A., Leão V.A., Kinetics of Sulfuric Acid Leaching of a Zinc Silicate Calcine, Hydrometallurgy, 89 (2007) 337-345.
• [8]. Wang R.X., Tang M.T, Yang S.H, Zhagn W.H, Tang C.B., He J. Yang J.G., Leaching Kinetics of Low-Grade Zinc Oxide Ore in NH3-NH4Cl-H2O System, J. Cent. South Univ. Technol., 15 (2008) 679-683.
• [9]. Bayrak B., Laçin O., Saraç H., Kinetic Study on the Leaching of Calcined Magnesite in Gluconic Acid Solutions, J. Ind. and Eng. Chem., 16 (2010) 479-484.
• [10]. Espiari S., Rashchi F., Sadrnezhaad S.K., Hydrometallurgical Treatment of Tailings with High Zinc Content, Hydrometallurgy 82 (2006) 54-62.