Acetic acid application as an activating reagent in the intensive cyanidation of gravity concentrates

B. Surimbayev; L. Bolotova; A. Baikonurova; S. Shalgymbayev

doi:10.31643/2019/6445.10

Authors

B. Surimbayev The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"
L. Bolotova The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"
A. Baikonurova Satbayev University
S. Shalgymbayev The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"

DOI:

https://doi.org/10.31643/2019/6445.10

Keywords:

intensive leaching, gravity concentration, reagent-activator, leaching, acetic acid, gold.

Abstract

The well-known technology of intensive cyanide leaching of gravity concentrates, which allows to bring part of gold into commercial products with obtaining high-purity Dore alloy, requires the use of expensive reagents and high temperature (80 °С) leaching. Studies have been carried out on intensive leaching of gold-containing gravity concentrate in a drum-type apparatus at low concentrations of sodium cyanide with the addition of a new reagent-activator. It is proposed to conduct intensive cyanidation of enriched gravity concentrate using acetic acid as an effective activator reagent. Improving the efficiency of cyanide leaching by introducing activators into the reagent system is achieved by dissolving passivating films on the surface of gold grains. Studies on the intensive leaching of gold in the enlarged laboratory tests. The results of the large-scale laboratory tests on the intensive cyanide leaching of the gravity concentrate using acetic acid as an activating agent activator were fully confirmed by the data of laboratory studies.

Downloads

Download data is not yet available.

Author Biographies

B. Surimbayev, The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"

Research scientist in the Laboratory of precious metals, The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology “Kazmekhanobr”, Almaty, Republic of Kazakhstan.

L. Bolotova, The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"

Candidate of Chemical Sciences, head of the Laboratory of precious metals, The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology “Kazmekhanobr”, Almaty, Republic of Kazakhstan.

A. Baikonurova, Satbayev University

Doctor of Technical Sciences, professor at the Department “Metallurgical processes, heat engineering and technology of special materials”, Satbayev University, Almaty, Republic of Kazakhstan.

S. Shalgymbayev, The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology "Kazmekhanobr"

Candidate of Chemical Sciences, assistant professor, Director at The Branch of the RSE «NC CPMS RK» State Scientific-Industrial Association of Industrial Ecology “Kazmekhanobr”.

References

Evdokimov A.V. Issledovanie processa intensivnogo cianirovanija zolotosoderzhashhih gravitacionnyh koncentratov(Investigation of the intensive cyanidation process of gold-containing gravity concentrates). Dissertation:05.16.02.No D212.073.02. Irkutsk, Russia, 2012. 9-85. (In Russ.).

Zaharov B.A., Meretukov M.A. Zoloto: upornye rudy(Gold: resistant ores). Ruda i Metally=Оre and metals.Moscow2008. 296-300.(In Russ.).

Surimbayev B., Bolotova L., Mishra B., Baikonurova A. Intensive cyanidation of gold from gravity concentrates in a drum-type apparatus.News Natl. Acad. Sci. Repub. Kaz., Ser. Geol. Tech. Sci., 2018. 5, 431.32-37.https://doi.org/10.32014/2018.2518-170X.7(In Eng.).

Surimbayev B., Baikonurova A., Bolotova L., Mishra B. Intensivnoe vyshchelachivanie zolota iz gravitatsionnogo kontsentrata pri nizkoi kontsentratsii tsianida natriia(Intensive leaching of gold from gravity concentrate at low concentration of sodium cyanide).Kompleksnoe Ispol’zovanie Mineral’nogo Syr’a. 2018. 4. 65-70. https://doi.org/10.31643/2018/6445.31(In Russ.).

Surimbayev B., Bolotova L., Baikonurova A., Mishra B. Issledovanija po intensivnomu cianirovaniju zolota iz gravitacionnyh koncentratov(Study on intensive cyanidation of gold from gravity concentrates).Sovremennye problemy kompleksnoj pererabotki trudnoobogatimyh rud i tehnogennogo syr'ja (Plaksinskie chtenija –2017): materialy Mezhdunarodnoj nauchnoj konferencii. (Modern problems of complex processing complex ores and technogenic raw materials, PlaksinReadings –2017: Materials of the International Scientific Conference), Krasnoyarsk, Russia, 2017. 273-275. (In Russ.).

Meretukov M.A., Sanakulov K.S., Zamin A.V., Arustamyan M.A. Zoloto khimiia dlia metallurgov i obogatitelei(Gold: chemistry for metallurgists and dressers). Moscow: Ruda i Metally=Оre and metals2014. 12-273.(In Russ.).

Karimi P., Abdollahi H., Amini A., Noaparast M.,Shafaei S.Z., Habashi F. Cyanidationof 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(In Eng.).

SandenberghR.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(In Eng.).

Evdokimov A.V. Poisk novykh reagentov-uskoritelei intensifitsiruiushchikh protsess tsianirovaniia (Search for new reagent-accelerators intensifying the process of cyanidation).Bulletin of the Irkutsk State Technical University. 2010. 4(44). 139-143.(In Russ.).

Astuti W., Hirajima T., Sasaki K., Okibe N. Comparison of effectiveness of citric acid and other acids in leaching of low-grade Indonesian saprolitic ores.Minerals Engineering. 2016.85. 1-16. (In Eng.).

Putohin N.I. Organicheskaia khimiia(Organic chemistry) -Moscow: Higher school. 1963. 185-204.(In Russ.).12Longley R., McCallum A., Katsikaris N. Intensive cyanidation: onsite application of the InLine Leach Reactor to gravity gold concentrates.Minerals Engineering. 2003. 16.411-419. https://doi.org/10.1016/S0892-6875(03)00054-2(In Eng.).