Studies for hydrometallurgical processing of titanium-magnesium production sludge with niobium extraction in solution

A.A. Ultarakova; Z.B. Karshyga; N.G. Lokhova; A.M. Yessengaziyev; P.C. Burns

doi:10.31643/2023/6445.18

Authors

A.A. Ultarakova "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University
Z.B. Karshyga "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University
N.G. Lokhova "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University
A.M. Yessengaziyev “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University
P.C. Burns University of Notre Dame, “Center for Sustainable Energy” USA

DOI:

https://doi.org/10.31643/2023/6445.18

Keywords:

sludge from the sludge collector, niobium, activation, leaching, sodium hydroxide.

Abstract

The material composition of sludge deposits from titanium-magnesium production was studied by chemical, X-ray, and microprobe analysis methods. Studies of the phase composition of the collector sludge showed that niobium is mainly bound with aluminum and titanium in oxide compounds. The particles of these compounds are very small and surrounded by the clay and carbonate component of the sludge collector. The chemical and mechanical activation processes of the sludge from the titanium-magnesium production sludge collector were executed based on the data obtained on the material composition. Alkaline leaching of sludge from sludge collector after preliminary activation was executed. The optimum conditions for the niobium extraction from the sludge of the sludge dump from the titanium-magnesium production were determined: sodium hydroxide concentration of 200 g/dm3, glycerol 5 g/dm3, S:L = 1:10, temperature 95 °C, leaching process duration - 4 hours. The addition of glycerol during alkaline leaching of sludge inhibits the transition of hexaniobate into insoluble sodium metaniobate enabling to increase the niobium extraction by 1.3 times with transfer into the solution of up to 80% of the extracted metal.

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Author Biographies

A.A. Ultarakova, "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University

Кандидат технических наук, ведущий научный сотрудник, АО «Институт металлургии и обогащения», Satbayev University, ул. Шевченко. 29/133, Алматы, Казахстан.

Z.B. Karshyga, "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University

Ph.D., Leading Researcher, “Institute of Metallurgy and Ore Beneficiation” JSC, Satbayev University, Shevchenko str. 29/133, Almaty, Kazakhstan.

N.G. Lokhova, "Institute of Metallurgy and Ore Beneficiation" JSC; Satbayev University

Senior Researcher, “Institute of Metallurgy and Ore Beneficiation” JSC, Satbayev University, Shevchenko str. 29/133, Almaty, Kazakhstan.

A.M. Yessengaziyev, “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

Ph.D., Junior Researcher, “Institute of Metallurgy and Ore Beneficiation” JSC, Satbayev University, Shevchenko str. 29/133, Almaty, Kazakhstan.

P.C. Burns, University of Notre Dame, “Center for Sustainable Energy” USA

Professor of Civil & Environmental Engineering & Earth Sciences, Director, Center for Sustainable Energy at Notre Dame, South Bend, USA.

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