Extraction of tungsten and molybdenum from grinding sludge of high-speed tool steels

Kiparisov, S. S.; Padalko, O. V.; Levinskii, Yu. V.; Sokol, Ivana; Zaitsev, Yu. N.

doi:10.1007/bf00802742

Cited by 4 publications

(4 citation statements)

References 1 publication

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“…Hankel et al 39 2020 Recovery of metallic swarf from grinding sludge Nayak et al 40 2020 Development of grinding sludge reinforced aluminium-based composite by powder metallurgy method Roslan et al 41 2020 Observation of sludge properties obtained from the steel industry, namely, electric arc furnace steel slag (EAFS) Ryabicheva et al 42 2007 Production of powder from grinding sludge Shimizu et al 43 2007 Grinding sludge was utilized as raw material for metal foam Fu et al 44 2007 Separation processes have been established to remove contaminants from high-speed steel GS. Kiparisov et al 45 1998 Tungsten and molybdenum have been extracted from the grinding sludge Piyawit et al 46 2018 Regaining of Rare earth metals (REMs) from NdFeB magnet GS in a muffle furnace. Organic solvent (methanol) was used to clean the GS and then GS was dried at 100°C.…”

Section: Author Year Alumina Catalystmentioning

confidence: 99%

Synthesis and characterization of spent alumina catalyst and grinding sludge reinforced aluminium-based composite material

Dwivedi¹,

Maurya²,

Saxena³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this investigation, an attempt has been made to use the waste material in the fabrication of aluminium-based composite material. Waste spent alumina catalyst (SAC) generated from oil refinery industries has been considered as primary reinforcement particle. Waste grinding sludge (GS) produced from iron forging industry was used as secondary reinforcement material in the preparation of composite. Further, chromium (Cr) has been added to SAC and grinding sludge (GS) reinforced aluminium-based composite material to prevent grain growth as well as to control the grain structure of composite material. Experimental results concluded that by adding 4.5% of GS and SAC with 1.5% Cr in aluminium alloy, mechanical properties such as hardness, compressive strength and tensile strength were significantly improved. Hardness compressive strength and tensile strength was increased by 40.06%, 7.24% and 18.86%, respectively, with respect to the aluminium alloy. However, the reduction in toughness was observed. SEM results depicted uniform distribution of SAC and GS particles in Al/4.5% SAC/4.5% GS/1.5% Cr composite. Thermal expansion behaviour and corrosion weight loss of composite have been also investigated to observe the influence of reinforcement in the aluminium alloy.

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Section: Author Year Alumina Catalystmentioning

confidence: 99%

Synthesis and characterization of spent alumina catalyst and grinding sludge reinforced aluminium-based composite material

Dwivedi¹,

Maurya²,

Saxena³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…However, the pyrogenic process could be used to greatly shorten the hydrometallurgical procedure. For example, the calcination [7][8][9] and the electrical arc furnace smelting were used to treat this waste in the world; unfortunately, the Cr and V were not recovered acceptable in the process. Based on the problems and the status quo of the amount of the high speed steel grindings, it is necessary to seek for a new technique to recovery of these elements completely.…”

Section: The Experimental Process and Thermodynamic Analysismentioning

confidence: 99%

Recovery Valuable Alloy from High Speed Steel Grindings by Silicothermic Process

Xia

Zhou

Yin

2011

AMR

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Based on thermodynamic analysis, the recovery of W, Mo, Cr and V as secondary alloy from high speed steel by silicothermic process were performed. The variables effected the reduction process considered in the study were lime ratio, content of reducing agent and heating effect per unit. The experimental results showed that the recovery of W, Mo, Cr and V as secondary alloy from high speed steel grindings was feasible by silicothermic process. The recoveries of W, Mo, Cr and V were 95%, 95%, 72% and 45% respectively. The quality of secondary alloy was steady and satisfied for steel making.

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“…The significant difference between friction coefficient of sliding for non spherical particles and the friction coefficient of rolling for spherical particles can serve as a way to change the trajectory of the powder particles on sloped surfaces [1,4]. On the base of this difference a series of devices can be realised as those presented in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Six of these devices (Fig. 1 a; c; d; f; g; h) [1][2][3][4][5] are mentioned in literature and tow others (Fig. 1 b; e) are of original concept.…”

Section: Introductionmentioning

confidence: 99%

Devices for Dry Separation of the Spherical Particles from those Having a Non Spherical Shape from a Metallic Powder

Spârchez

2007

AMR

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The paper describes the working principles for six types of separation devices mentioned in the literature, as well as two original types of separation devices devised by the author. In fact the functionality of each device presented in the paper is based on the difference between the friction coefficients – sliding friction for non-spherical particles and rolling friction for spherical ones, respectively. Due to this peculiarity, the two types of particles move along different trajectories, thus becoming separable. The paper also discusses the limit conditions ensuring the functionality of each separation device.

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Extraction of tungsten and molybdenum from grinding sludge of high-speed tool steels

Cited by 4 publications

References 1 publication

Synthesis and characterization of spent alumina catalyst and grinding sludge reinforced aluminium-based composite material

Synthesis and characterization of spent alumina catalyst and grinding sludge reinforced aluminium-based composite material

Recovery Valuable Alloy from High Speed Steel Grindings by Silicothermic Process

Devices for Dry Separation of the Spherical Particles from those Having a Non Spherical Shape from a Metallic Powder

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