Effect of mechanical activation on aluminothermic reduction of molybdenum trioxide

Sheybani, K.; Shariat, M.H.

doi:10.1016/j.ijrmhm.2019.04.015

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…Aluminothermic reduction is known for its effectiveness in producing high-purity tungsten metal. (Sheybani, et al 2019).…”

Section: I132 Carbothermic Reductionmentioning

confidence: 99%

Review on Tungsten Recovery and Sustainable Practices

Gouda,

elsheikh,

Elbshary

et al. 2024

Bulletin of Faculty of Science, Zagazig University

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Tungsten, a versatile transition metal located in Group VI of the Periodic Table, is prized for its strength and eco-friendly attributes, finding essential roles in numerous industries. Its applications range from light bulb filaments, X-ray tubes, to military technology, thanks to its outstanding hardness and density. In the chemical sector, tungsten compounds act as catalysts, sourced from minerals like wolframite and scheelite via flotation methods. Tungsten's unique capability to form diverse complexes in different oxidation states is notable, with primary minerals being wolframite and scheelite, and secondary ones influenced by geological processes. Recovery of tungsten has advanced from historical empirical methods to more efficient and ecoconscious practices, involving digestion with soda or caustic soda, crystallization, and the use of solvent extraction or ion exchange to eliminate impurities. Commercial APT production employs an evaporation crystallization process and pyrometallurgical methods, such as roasting, carbothermic reduction, and electric arc melting, to reduce tungsten oxide to its metal form. These processes, combined with novel approaches and recycling methods, contribute to the versatile and sustainable use of this valuable metal. The provided information summarizes the recovery of tungsten from complex sources, including the removal of arsenic from tungsten residues. Key points encompass tungsten recovery methods, hydrometallurgy for tungsten recovery, arsenic removal from tungsten residues, and innovative processes and recycling.

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“…Aluminothermic reduction is known for its effectiveness in producing high-purity tungsten metal. (Sheybani, et al 2019).…”

Section: I132 Carbothermic Reductionmentioning

confidence: 99%

Review on Tungsten Recovery and Sustainable Practices

Gouda,

elsheikh,

Elbshary

et al. 2024

Bulletin of Faculty of Science, Zagazig University

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“…The basis of mechanochemistry is the mechanical activation of a precursor using high-energy milling. These conditions include the formation of lattice defect, decreasing particle size with the higher surface defects, increasing the Gibbs free energy of the precursor, and accelerating the chemical reaction rate [37,38]. Studies show that mechanical activation is significantly used in extractive metallurgy [39,40].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and kinetics of gold leaching from copper anode slime using BmimHSO₄ as green solvent

Hernashki

Rezvani

Khayati

et al. 2022

Int J of Chemical Kinetics

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The cyanide process, as the most common approach in the recovery of gold by hydrometallurgical, suffers from its high toxicity to the environment. The effect of practical parameters, viz., temperature, time, concentration, mechanical activation, and the stirring rate, was investigated using a combination of H 2 O 2 , BmimHSO 4 , and thiourea as green solvent to recover the gold from anode copper slime in an electrorefining plant. The leaching kinetics of Au in the selected slime was also investigated. The results showed that leaching reaches 93.48% after 20 h in the activated sample for 10 h at the temperature of 313.15 K and solvent including 60% (v/v) BmimHSO 4 , 50 g/L thiourea, 1/15 g/ml pulp density, 25 g/L H 2 O 2 , and an agitation speed of 400 rpm. Moreover, the leaching of Au follows the shrinkage particle model, and the diffusion of a solvent through the leaching product was the administrated mechanism. The proposed green solvent can also dissolve gold effectively and is an excellent candidate to replace harmful cyanide-based solvents.

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“…these highly exothermic reactions. Aluminothermic reactions with ZrO 2 , 12 MoO 3 , 13,14 NaVO 3 , 15 MgO, 16 and Cr 2 O 3 , 17 have been studied for industrial alloy production, while reduction of ZnO, 18,19 was investigated by preparing Al/Al 2 O 3 matrix composites.…”

mentioning

confidence: 99%

“…Mechanistic understanding of metallothermic reactions supports the effective parameter optimization in industry but is still in its infancy due to the harsh reaction conditions of these highly exothermic reactions. Aluminothermic reactions with ZrO 2 , 12 MoO 3 , 13,14 NaVO 3 , 15 MgO, 16 and Cr 2 O 3 , 17 have been studied for industrial alloy production, while reduction of ZnO, 18,19 was investigated by preparing Al/Al 2 O 3 matrix composites.…”

mentioning

confidence: 99%

Aluminothermic reduction of CeO₂: mechanism of an economical route to aluminum–cerium alloys

Amon,

Moore,

Henderson

et al. 2024

Mater. Horiz.

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Effect of mechanical activation on aluminothermic reduction of molybdenum trioxide

Cited by 10 publications

References 19 publications

Review on Tungsten Recovery and Sustainable Practices

Review on Tungsten Recovery and Sustainable Practices

Mechanism and kinetics of gold leaching from copper anode slime using BmimHSO₄ as green solvent

Aluminothermic reduction of CeO₂: mechanism of an economical route to aluminum–cerium alloys

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Effect of mechanical activation on aluminothermic reduction of molybdenum trioxide

Cited by 10 publications

References 19 publications

Review on Tungsten Recovery and Sustainable Practices

Review on Tungsten Recovery and Sustainable Practices

Mechanism and kinetics of gold leaching from copper anode slime using BmimHSO4 as green solvent

Aluminothermic reduction of CeO2: mechanism of an economical route to aluminum–cerium alloys

Contact Info

Product

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Mechanism and kinetics of gold leaching from copper anode slime using BmimHSO₄ as green solvent

Aluminothermic reduction of CeO₂: mechanism of an economical route to aluminum–cerium alloys