Intensive leaching of gold from gravity concentrate at low concentration of sodium cyanide
DOI:
https://doi.org/10.31643/2018/6445.31Keywords:
intensive leaching, gravity concentration, reagent-activator, leaching, gold.Abstract
Studies on the intensive leaching of gold gravity concentrate in the drum and conical types at low concentration of sodium cyanide laced with reagent-activator. As a reagent-used organic acid activator with 1.5 and 3.0 kg/t. List the parameters of both devices intensive cyanidation. Tests conducted in comparison with well-known methods of intensive leaching of gold in similar devices with a high concentration of sodium cyanide, in which gold extraction reaches high results. However, there is significant consumption of sodium cyanide, which is an expensive reagent. Similar results can be achieved with a low concentration of sodium cyanide using a reagent-activator, with significant reduction in the consumption of sodium cyanide. It is shown that the use of reagent-activator on the basis of an aliphatic acid significantly intensifies the leaching process. Found that the gold content in the tails of the intensive cyanidation by using reagent-activator on the basis of an aliphatic acids in both vehicles lower than without the use of this reagent. As a result of study of dissolution rate of gold in rolling the unit higher than that of the conical, but for intensive cyanidation gravity concentrates may use both types of machines, drum and conical.
Downloads
References
Zaharov B.A., Meretukov M.A. Zoloto: upornye rudy (Gold: resistant ores). Moscow, Ore & Metals.2008.296-300. (In Russ).
Bocharov V.A., Ignatkina V.A., Abrjutin D.V. Tehnologija pererabotki zolotosoderzhashhego syr'ya(Technology of processing of gold-bearing raw materials). Moscow, Ore & Metals. 2007. 405. (In Eng).
Laplante A., Staunton W. Pros. 5th Int. Symp.: Hydrometallurgy 2003. Vancouver, Canada, August 24-27.2003.1. 65-74. (In Eng).
Surimbayev B.N., Baikonurova A.O., Bolotova L.S. Prospects for the development of the process of intensive cyanidation of gold-containing products in the Republic of Kazakhstan. News Natl. Acad. Sci. Repub. Kaz., Ser. Geol. Tech. Sci., 2017.4, 424. 133-141. (In Eng).
Longley R., McCallum A., Katsikaris N. Intensive cyanidation: onsite application of the InLine Leach Reactor to gravity gold concentrates. Minerals E n g i n ee ring. 2003.16. 411-419. https://doi.org/10.1016/S0892-6875(03)00054-2
Campbell J., Watson B., Gravity Leaching with the ConSep Acacia – Results from AngloGold Union Reefs, Eighth Mill Operators Conference, Townsville, Australia. 2003. 167-175. (In Eng).
Karimi P., Abdollahi H., Amini A., Noaparast M., Shafaei S.Z., Habashi F. Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony. Inter. J. Miner. Process. 2010.95. 68–77. https://doi.org/10.1016/j.minpro.2010.03.002
Meretukov M.A. Zoloto: khimiya, mineralogija, metallurgija (Gold: chemistry, mineralogy, metallurgy).Moscow, Ore & Metals, 2008. 520. (In Russ).
Deschenes G. Cyanidation of a copper-gold ore.Energy Mines and Resources Canada, Canada Ctr. for Mineral and Energy Technology, Ottawa. 1997. 127-141. https://doi.org/10.1016/S0301-7516(97)00008-2
Ghobadi B., Noaparast M., Shafaei S. Z., Unesi M. Optimization of cyanidation parameters to increase the capacity of Aghdarre gold mill. JME. 2014.5.121-128. (In Eng).
Sandenbergh R.F., Miller J.D. Catalysis of the leaching of gold in cyanide solutions by lead, bismuth and thallium. Miner. Eng. 2001.14. 1379-1386. https://doi.org/10.1016/S0892-6875(01)00152-2
Bayat O., Vapur H., Akyol F., Poole C. Effects of oxidizing agents on dissolution of Gumuskoy silver ore in cyanide solution. Miner. Eng. 2003.16. 395-398. https://doi.org/10.1016/S0892-6875(03)00050-5
Surimbayev B., Bolotova L., Baikonurova A., Yesengarayev Ye. Primenenie khimicheskih dobavok pri vyshhelachivanii zolota (Application of chemical additives on leaching gold). Intensifikacija gidrometallurgicheskih processov pererabotki prirodnogo i tehnogennogo syr'ja. Tehnologii i oborudovanie: materialy Mezhdunarodnoj nauchno-prakticheskoj konferencii(Intensification of hydrometallurgical processes of recycling of natural and technogenic raw materials. Technologies and equipment: Materials of the International Scientific and Practical Conference), St. Petersburg, Russia. 2018. 294-296. (In Russ).
LeachWELL. http://www.mineralprocesscontrol.com.au/Product_Detail.php?Product=6. (Date of access 3.05.2018).
Patent application of the Republic of Kazakhstan for invention was file from N.2018/0134.1 dated February 28, 2018.Sposob pererabotki zolotosoderzhashhikh gravitatsionnykh kontsentratov (Method for processing gold-containing gravity concentrates). Surimbayev B., Bolotova L., Baikonurova A., Shalgymbayev S.
Surimbayev B., Bolotova L., Baikonurova A., Mishra B. Issledovanija po intensivnomu tsianirovaniyu zolota iz gravitatsionnykh kontsentratov(Study on intensive cyanidationof gold from gravity concentrates).Sovremennye problemy kompleksnoj pererabotki trudnoobogatimykh rud i tekhnogennogo syr'ya (Plaksinskie chteniya–2017): materialy Mezhdunarodnoj nauchnoj konferencii. (Modern problems of complex processing complex ores and technogenic raw materials, Plaksin Readings –2017: Materials of the International Scientific Conference), Krasnoyarsk, Russia.2017. 273-275. (In Russ)
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2018 Surimbayev, B., Baikonurova, A., Bolotova, L., & Mishra, B.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 Unported License.
