STUDY OF ACID LEACHING OF NIOBIUM FROM TITANIUM PRODUCTION SLUDGE
Ultarakova A.A. Yessengaziyev A.M. Lokhova N.G. Karshyga Z.B. Kassymzhanov K.K.
2023Faculty of Metallurgy
Metalurgija
2023#62Issue 3-4433 - 436 pp.
This article contains the results of acid leaching of titanium production sludge for the extraction of niobium into the solution. The material composition of sludge deposits from titanium-magnesium production was studied by meth-ods of chemical, X-ray and electron-probe analysis. Studies of the sludge phase composition of the collector sludge showed that niobium was bonded mainly with aluminum and titanium. Electron-probe analysis showed that nio-bium in the form of fine grains is concentrated around the titanium particles. Agitation leaching was performed by two stages within a wide range of changing process parameters. The optimal leaching parameters were 4 % hydro-chloric acid (HCl), S:L = 1:10; t=25 °C, agitation time 2 hours at the first stage. Optimal conditions for the second leaching stage were 20 % HCl, S:L = 1:5, t=25 °C, agitation time of 2 hours.
extraction , hydrochloric acid , leaching , niobium , sludge
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Satbayev University, “Instutute Metallurgy and Ore Beneficiation” JSC, Almaty, Kazakhstan
Satbayev University
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