Research on hydrometallurgical processing of titanium-magnesium production sludge with niobium extraction in solution

Ultarakova A.A. Karshyga Z.B. Lokhova N.G. Yessengaziyev A.M. Burns P.C.
2023 Institute of Metallurgy and Ore Beneficiation JSC

Kompleksnoe Ispolzovanie Mineralnogo Syra
2023 #325 Issue 2 53 - 61 pp.

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 thecollector 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 1.3times with transfer into the solution of up to 80% of the extracted metal.

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

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“Institute of Metallurgy and Ore Beneficiation” JSC, Satbayev University, Almaty, Kazakhstan
University of Notre Dame, “Center for Sustainable Energy” USA, South Bend, United States

“Institute of Metallurgy and Ore Beneficiation” JSC
University of Notre Dame

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