Investigation of the leaching process of rare-earth metals from the black shale ores of greater Karatau

Baigenzhenov, Omirserik; Yulussov, S.B.; Khabiyev, Alibek; Sydykanov, M.M.; Akbarov, M. S.

doi:10.31643/2019/6445.31

Cited by 3 publications

(3 citation statements)

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“…The global market demand for rare and rare earth metals (REM) in the development and production of mineral resources is growing each year, driven by scientific and technological advancements [ [1], [2], [3]]. Scandium, a rare and expensive metal, is primarily found dispersed in nature, although it also exists in its mineral called tortveitite.…”

Section: Introductionmentioning

confidence: 99%

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Baigenzhenov,

Orynbayev,

Turan

2024

KIMS/CUMR/MShKP

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The exceptional mechanical and chemical properties exhibited by scandium, characterized by its low density, high strength, and remarkable resistance to corrosion, have positioned it as a sought-after metal in diverse industrial applications. Consequently, a surge in market demand for scandium has been observed, highlighting its unique attributes compared to other metals. The Republic of Kazakhstan has identified potential sources of scandium in the waste generated by the titanium, uranium, and aluminum industries. By implementing efficient processing techniques for these production wastes, the country can effectively address the deficit of scandium while also mitigating man-made emissions, thus significantly improving the environmental landscape. This article aims to explore and evaluate contemporary methodologies that have been employed for the recovery of scandium from the aforementioned secondary sources. By examining and analyzing these techniques, we can gain insights into the most effective and sustainable approaches to harnessing scandium from waste materials in Kazakhstan. This research not only contributes to meeting market demands but also ensures the responsible utilization of scandium, benefiting not just the country's economy but also its environmental sustainability.

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Section: Introductionmentioning

confidence: 99%

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Baigenzhenov,

Orynbayev,

Turan

2024

KIMS/CUMR/MShKP

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“…Although these ores contain up to 1% V 2 O 5 , they cannot be enriched due to chemical mobility of vanadium atoms and slight solubility of its compounds in weak acid and alkali solutions, as well as in water solutions. Well-known technologies of vanadium extraction from these ores [4][5][6][7][8], including direct vanadium extraction via pyro-and hydrometallurgical methods [9][10][11][12] and production of silicon-vanadium alloying compositions (Fe-Si-V alloys) are not always efficient [13]. Use of these ores as fluxes in phosphorus production is prospective [14,15].…”

Section: Introductionmentioning

confidence: 99%

Study of the process of oxidizing-sodium roasting of industrial vanadium-containing ferrophosphorus and vanadium slags

Sukharnikov,

Aitkulov,

Ermishin

et al. 2023

cisisr

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Among the alloying metals used in the smelting of high-quality steels, vanadium occupies a special place. Its introduction into steel, even in very small amounts (tenths and hundredths of a percent), provides significant improvement in the service properties of metal structures made from it. Global demand for vanadium ferroalloys exceeds its production. Lack of vanadium raw materials is the limiting factor for increasing production of ferrovanadium. Siliceous-carbonaceous ores of Karatau in Kazakhstan, amounting to more than four billion tons, are among the world's largest vanadium reserves. Although these ores contain up to 1% V 2 O 5 , they cannot be enriched, and there are no technologies for the rational vanadium extraction from them. This article presents the results of studies on the extraction of vanadium from ferrophosphorus, obtained during the complex processing of these ores together with phosphorites in the process of obtaining yellow phosphorus. The processes of oxidizingsodium roasting of industrial vanadium-containing ferrophosphorus (1.5 % V) and vanadium slag (10 % V 2 O 5 ) obtained during the converter processing of ferrophosphorus have been studied. It has been shown that watersoluble compound NaVO 3 is forming during oxidizing roasting of ferrophosphorus or slag in mixed with Na 2 CO 3 . With aqueous acid leaching of ferrophosphorus roasting cinder, vanadium extraction into solution is achieved up to 81 %, and with leaching of slag cake with Na 2 CO 3 -more than 92 %. Total V 2 O 5 extraction is 75 %.Mastering of the technology for processing phosphate and vanadium-containing siliceous raw materials at Kazphosphate LLP will expand the raw material base of vanadium and will allow creating a production facility for smelting more than 200 tpy of 50 % ferrovanadium.

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“…In metallurgy, acid leaching of non-ferrous metals from various raw materials has become widespread. The effectiveness of this method has been proven in the extraction of copper from oxide copper ores [4], zinc from sulfide ores [5], and vanadium raw materials [6][7][8][9]. So, on the basis of this, several methods for processing the quartzite to extract vanadium have been proposed, involving roasting, sulfuric acid leaching of the cinder, and hydrolysis of the resulting solution [10]; acid leaching followed by sorption of vanadium [11]; roasting, leaching with a soda solution, filtering the resulting solution and its subsequent electrochemical treatment [12]; two-stage leaching (sulfuric acid oxidation and autoclave leaching) followed by sorption of vanadium [13,14]; direct extraction with preliminary sulfatization [15].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Processing of Vanadium-Containing Black Shale Tailings

Shevko

Aitkulov

Badikova

2022

Period. Polytech. Chem. Eng.

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This article examines results of the thermodynamic modeling of interaction of the briquetted tailings obtained at hydrometallurgical leaching of the vanadium-containing quartzites (black shales) with carbon and iron, determination of Si, V, Fe, C equilibrium distribution and optimal conditions for the formation of various grades of ferrosilicon, as well as the electric melting to produce silicon alloys. The research techniques were the method of thermodynamic modeling using the HSC-6.0 software package (Outokumpu), the second-order rotatable designs (Box-Hunter plans) and electrofusion in an arc furnace. It was established that an increase in the amount of iron from 11 to 39% makes it possible to increase the extraction degree of silicon into an alloy up to 72–73% in the temperature of 1800–2000 °C, in the process the silicon concentration in the alloy decreases from 57–65.7 to 40.5–40.9%; FS45-grade ferrosilicon at the extraction degree of silicon in the alloy of 70–72.6% can be formed in the temperature of 1750–2000 °C in the presence of 29–39% Fe, FS50 ferrosilicon is formed at 25.5–35.0% Fe and 1870–2000 °C, and FS65 ferrosilicon – in the temperature of 1895–2000 °C in the presence of 11–12.7% Fe. The FS45-grade ferrosilicon was formed during electric smelting of a charge containing 57% of the briquettes, 21% of coke, 22% of steel chips, and the FS50-grade ferrosilicon – using a charge consisting of 61% of the briquettes, 22% of coke and 17% of steel chips; the silicon extraction degree into the alloys is 73–79%.

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Investigation of the leaching process of rare-earth metals from the black shale ores of greater Karatau

Cited by 3 publications

References 0 publications

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Study of the process of oxidizing-sodium roasting of industrial vanadium-containing ferrophosphorus and vanadium slags

Comprehensive Processing of Vanadium-Containing Black Shale Tailings

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