Production and use of concentrates from polymetallic manganese ore

Nokhrina, O. I.; Rozhikhina, I. D.; Proshunin, I. E.; Khodosov, I. E.

doi:10.3103/s0967091215050113

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Figure 4 the Cr 2 O 3 content in the slag increases from 1 wt-% to 5 wt-%, the proportion of liquid phase of the slag decreases from 87.31 to 78.56%. One of the advantages of semi-steel smelting is that manganese ore can be added to replace part of the ferromanganese added in the subsequent alloying process, thus greatly reducing the alloying cost [16,17]. The influence of MnO content on the proportion of liquid phase of CaO-SiO 2 -FeO-MgO-MnO-Cr 2 O 3 slag system at 1873K is shown in Figure 5.…”

Section: Resultsmentioning

confidence: 99%

Slag formation path in converter smelting process of semi-steel containing chromium

Diao

Liu

et al. 2020

Ironmaking & Steelmaking

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Aiming at the high-efficiency utilization of vanadium-titanium magnetite with high chromium content, a slag formation path in the converter smelting process of semi-steel containing chromium was proposed. The influences of MnO and Cr 2 O 3 on the melting characteristics of converter slag were calculated through FactSage. The effects of components and temperature on the equilibrium distribution ratio of P, Cr between molten CaO-SiO 2 -FeO-MgO-MnO-Cr 2 O 3 -P 2 O 5 slags and molten steel was obtained by the indirect experimental method and the regular solution model. The results show that the liquidus region and the proportion of liquid phase decrease with the increase of Cr 2 O 3 content in steel slag. The increases of basicity conduces to dechromization and dephosphorization. The L Cr increased continuously with increasing FeO content and the influence of the oxidization of steel slag on the L Cr is greater than L P . Both L P and L Cr decrease distinctly with the increase in temperature. The slag formation path for the smelting process of semi-steel containing chromium is as follows: 17wt-%CaO-16wt-%SiO 2 -67wt-%FeO→25wt-%CaO-20wt-%SiO 2 -55wt-%FeO→57wt-%CaO-17wt-% SiO 2 -6wt-%FeO.

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Section: Resultsmentioning

confidence: 99%

Slag formation path in converter smelting process of semi-steel containing chromium

Diao

Liu

et al. 2020

Ironmaking & Steelmaking

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“…A series of experiments for the melting of cast iron GI15, according to the sandwich-type scheme of the process with a modifier (composition 1), which did not reveal any significant differences in the mechanical properties of the modified samples, depending on the mode of administration. This fact contradicts the stable opinion of the advantages of the sandwich-type modification process [4,[10][11][12][13][14]. The next step in the study was the evaluation of the modifier of composition 2.…”

Section: Materials and Methods Of Researchmentioning

confidence: 95%

Results of Modification of Cast Iron by Carbon Nanostructures of Gas Cleaning Dust of Silicon Production

Karlina¹,

Kondratiev²,

Balanovsky³

et al. 2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

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A series of experiments for the melting of cast iron GI15, according to the sandwich-type scheme of the process with a modifier (composition 1, 2, 3) did not reveal any significant differences in the mechanical properties of the modified samples, depending on the mode of administration. Surface examination of the samples with the help of scanning electron microscopy showed significant differences in the structure of the metal surface. All the materials studied have the structure of gray iron on a ferrite-pearlitic basis with graphite of a laminar rectilinear form of the type PGf1, in unmodified samples. Modified samples have the form of inclusions of graphite of the type PGf4 nestshaped, vortical shape. The conducted studies of microstructures after mechanical tests of samples of cast iron GI30, modified with composition 2, showed the presence of inclusions of globular graphite. The introduction of small amounts of a modifier with nano-sized structures during the teeming leads to: an increase in the content of perlite in the metal base; change in the form of graphite inclusions of cast iron from lamellar to nest-shaped (rosette), spherical (globules); increase in strength up to 35-50%.

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“…For these reasons, the dissolution of both MnO and Mn 2O3, as well as MnO2 and Mn(OH)2 in saturated FeCl2 solution, goes almost to the end. As an example, it should be noted that adding FeCl2 in the amount of 9.6% into calcium chloride allows us to almost completely dissolve MnO2 and about 76% of MnO [10,11].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Usage of High Quality Manganese-Containing Materials from Ferroalloy Production Waste

Nohrina

Rogihina

Proshunin

et al. 2020

KEM

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We propose a flow diagram for processing ferroalloy production waste, such as silicothermic slag from manganese metal, as well as wet and dry powder of cleaning gas from ferroalloy furnaces that smelt manganese alloys. We experimentally determined the parameters for intensifying the calcium chloride method of enriching ferroalloy production waste, which resulted in a manganese extraction rate of 78-86%, with high-quality manganese concentrates. We present the results of studies related to the use of high-quality concentrates to dope steel with manganese, when processing it in a bucket, and smelting manganese metal via the aluminothermic method.

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Production and use of concentrates from polymetallic manganese ore

Cited by 7 publications

References 3 publications

Slag formation path in converter smelting process of semi-steel containing chromium

Slag formation path in converter smelting process of semi-steel containing chromium

Results of Modification of Cast Iron by Carbon Nanostructures of Gas Cleaning Dust of Silicon Production

Preparation and Usage of High Quality Manganese-Containing Materials from Ferroalloy Production Waste

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