A novel method for direct fabrication of ferromolybdenum using molybdenite via self-propagation high temperature synthesis

Golmakani, M.H.; Khaki, Jalil Vahdati; Babakhani, Abolfazl

doi:10.1016/j.matchemphys.2017.03.017

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…It can be observed that in the previous investigation carried out by the present authors, the combustion synthesis of the sample in the argon inert atmosphere was also studied, and in terms of reaction products, the results were almost the same [15]. It can be deduced that in the process of combustion synthesis performed in this study, the atmosphere of the environment, due to the very short time of the SHS process, has no significant effect on the type and composition of the products.…”

Section: Phase Analysissupporting

confidence: 66%

“…In a similar study Afsahi et al, also found that molybdenum disulphide in the presence of lime and water can lead to the production of calcium molybdate along with a calcium sulfide solid phase [14]. Thermodynamic evaluations and preliminary experimental results in present study show that the direct production of ferromolybdenum from the molybdenum sulfide concentrate in the presence of lime as desulfurization agent could be possible in one step using aluminothermic reduction method [15]. Thus, the roasting of molybdenite and its molybdenum loss could be obviated to a considerable extent.…”

Section: Introductionsupporting

confidence: 65%

“…Therefore, it seems that Fe 3 Mo 3 C phase in the X-ray diffraction analysis could be assumed as a non-stoichiometric compound, Fe 3 Mo 3 C 1-x . Regarding this isuue, sufficient explanation can be found in other articles by the present authors and also Di et al, [15,25]. Therefore, based on the above-mentioned argument, this phase can be assumed to be equivalent to the Sigma phase (σ-FeMo) in Fe-Mo phase diagram [2,[26][27].…”

Section: Phase Analysismentioning

confidence: 51%

“…Measuring the adiabatic temperature of reaction 1, according to Merzhanov's empirical criterion in Eq. 2, will show that the adiabatic temperature of this reaction with 55wt % Mo reaches to 2613K which is much higher than the Merzhanov's acceptance criterion (T ad > 1800K) and therefore it can be classified in the range of self-propagation high temperature synthesis reactions (SHS) [15,[23][24].…”

Section: J Min Metall Sect B-metall 54 (2) B (2018) 233 -241mentioning

confidence: 93%

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Formation mechanism of Fe-Mo master alloy by aluminothermic reduction of MoS2-Fe2O3 in the presence of lime

Golmakani

Khaki

Babakhani

2018

J min metall B Metall

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The reaction mechanism of MoS 2-Fe 2 O 3 aluminothermic reduction in the presence of lime using microwave-assisted combustion synthesis method was surveyed. Achieving technical feasibility in one-step production of ferromolybdenum along with sulfur removing in solid form are the main features of this novel process. Simultaneous Preliminary thermoanalytical investigations DSC/TGA and X-ray diffraction experiments during the heating process of 0.42MoS 2 +1.14Al + 0.29Fe 2 O 3 +0.84CaO demonstrated four key sequential endothermic and exothermic reactions at 420, 540, 660, and 810 o C. The most noteworthy reactions involve evaporation of moisture and volatile matter, molybdenite roasting, simultaneous production of lateral compounds such as CaMoO 4 and CaSO 4 , aluminum melting transition, and final termite reaction. Kinetics procedure of the system was conducted using a classical model-free approach by Kissinger-Akahira-Sunose (KAS) method. In this study, the activation energy was determined about 106.4 (kJ.mol-1) for thermite reaction in the temperature range of 810 to 918 o C.

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Section: Phase Analysissupporting

confidence: 66%

Section: Introductionsupporting

confidence: 65%

Section: Phase Analysismentioning

confidence: 51%

Section: J Min Metall Sect B-metall 54 (2) B (2018) 233 -241mentioning

confidence: 93%

See 2 more Smart Citations

Formation mechanism of Fe-Mo master alloy by aluminothermic reduction of MoS2-Fe2O3 in the presence of lime

Golmakani

Khaki

Babakhani

2018

J min metall B Metall

Self Cite

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“…Sulfide ores are main mineral resource of non-ferrous metals and are widely used to extract elements such as copper, lead, zinc, molybdenum and nickel [1][2][3][4][5][6]. Demond for non-ferrous metals is growing in response to continuous advances in science and technology [7,8]. Currently, most non-ferrous metals are extracted from sulfide mineral, which is recovered from sulfide ores by flotation [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Study on Phase Transfer Catalyst Used in the Synthesis of Sodium Isobutyl Xanthate

Cheng

Weng

et al. 2021

Minerals

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Xanthates are by far the most widely used collectors in the froth flotation beneficiation of sulfide ores. However, the xanthate production process suffers from low yield, low productivity, long reaction time and environmental pollution. To address these issues, an effective method was developed for the synthesis of xanthates using phase transfer catalyst. Sodium isobutyl xanthate was synthesized from isobutyl alcohol ((CH3)2CHCH2OH), sodium hydroxide (NaOH) and carbon disulfide (CS2) with dichloromethane (CH2Cl2) as solvent and cetyltrimethylammonium bromide (CTAB), cetyltrimethylammonium chloride (CTAC), tetrabutylammonium bromide (TBAB) and tetrabutylammonium chloride (TBAC) as phase transfer catalyst. The compound was characterized by elemental analysis, infrared spectrum, 1H NMR and 13C NMR. The influencing factors on the content and yield of sodium isobutyl xanthate including phase transfer catalyst type, phase transfer catalyst dosage and reaction time were studied by single-factor experiments. The influencing factors on the product purity and yield including reaction temperature, solvent volume, material ratio and rotating speed were studied by orthogonal experiments. The results showed that when the amount of TBAC was 3.0%malcohol, the reaction temperature was 35 °C, the solvent volume was 3.5 Valcohol, the rotating speed was 180 rpm, the reaction time was 4 h and the material ratio was n[(CH3)2CHCH2OH]:n(NaOH):n(CS2) = 1:1:1.10, the product yield could be up to 86.66% and the product purity reached 82.56%.

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Efficient Removal of Molybdenum from Ultra-Low Concentration Solutions via Fe(III) Chelating Precipitation: Precipitation Sludge for MoFe Alloy Production via the Metallothermic Reduction

Zhang

Liu

Huang

et al. 2022

The Minerals, Metals &Amp; Materials Series

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A novel method for direct fabrication of ferromolybdenum using molybdenite via self-propagation high temperature synthesis

Cited by 11 publications

References 11 publications

Formation mechanism of Fe-Mo master alloy by aluminothermic reduction of MoS2-Fe2O3 in the presence of lime

Formation mechanism of Fe-Mo master alloy by aluminothermic reduction of MoS2-Fe2O3 in the presence of lime

Study on Phase Transfer Catalyst Used in the Synthesis of Sodium Isobutyl Xanthate

Efficient Removal of Molybdenum from Ultra-Low Concentration Solutions via Fe(III) Chelating Precipitation: Precipitation Sludge for MoFe Alloy Production via the Metallothermic Reduction

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