Involvement of the Domestic Manganese Ores in Production

Makeev, D. B.; Kozlova, O. N.; Polulyakh, L. A.; Петелин, А. Л.; Александров, А. А.; Dashevskii, V. Ya.

doi:10.1134/s0036029520090098

Cited by 3 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The current decrease in the commodity of manganese ore import from Ukraine requires its replacement. This is possible through the development of new manganese deposits [8], involvement in the processing of technogenic waste of ferroalloy production [15], changes in the structure of ferroalloy consumption in metallurgy [16], involvement in the production of new types of manganese raw materials [17][18][19]. Even the introduction of the South Khingan (Jewish Autonomous Region) and Porozhinsky (Krasnoyarsk Territory) deposits [8] will not completely solve the problem of supplying high-quality manganese ores.…”

Section: State Of the Russian Ferroalloy Marketmentioning

confidence: 99%

The dynamics of ferroalloys commodity flows within Russia

Boyarko¹,

Bolsunovskaya²,

Khatkov³

2021

cisisr

View full text Add to dashboard Cite

The paper deals with the commodity flows (production, import, export, consumption, prices) of manganese, chromium, silicon, vanadium, niobium, molybdenum, tungsten, titanium and nickel ferroalloys in dynamics from 2000 to 2019 throughout Russia. The paper also specifies groups of ferroalloys: import-dependent (silicomanganese, metallic manganese, ferroniobium), export-oriented (ferrosilicon, ferrochrome, ferrovanadium, ferromolybdenum) and counter import-export (ferromanganese) flows. The paper notes that there has been a liquidation of import dependence on ferromanganese and ferromolybdenum. Trends in shares of Russian ferroalloys in their world production and consumption, as well as in the world trade are determined. The share of Russia in the world production of ferromolybdenum increased (up to 5-8 %), while ferrovanadium and ferrosilicon decreased. The shares of Russian consumption (in world demand volume) of ferrovanadium (up to 11-7 %) and ferroniobium (up to 5-7 %) increased, and the shares of national demand for ferrosilicon and silicomanganese in the volume of world supply decreased. The shares of Russian import in the world trade volume of metallic manganese (up to 11-16 %) and ferroniobium (up to 5 %) are increased, and the share of national imports of silicomanganese and ferromanganese decreased. The shares of Russian export in the world trade volume of ferrosilicon (up to 17-21 %) and ferromolybdenum (up to 5-8 %) are increased, while the share of national exports of ferrovanadium decreased. As a result, the authors give proposals to mitigate the import dependence on certain types of ferroalloys (metallic manganese, silicomanganese and ferroniobium.

show abstract

Section: State Of the Russian Ferroalloy Marketmentioning

confidence: 99%

The dynamics of ferroalloys commodity flows within Russia

Boyarko¹,

Bolsunovskaya²,

Khatkov³

2021

cisisr

View full text Add to dashboard Cite

show abstract

Development of temperature-speed modes of hot deformation of Co – 28Cr – 6Mo alloy based on processing maps

Gamin

Korotitskiy

Kin

et al. 2022

Izv. vysš. učebn. zaved., Čern. metall.

View full text Add to dashboard Cite

In the article, the tests of the medical alloy Co – 28Cr – 6Mo after homogenization for uniaxial compression at temperatures of 1000, 1100 and 1200 °C and strain rates of 1, 10, and 50 s–1 were carried out using the Gleeble System 3800. The stress-strain curves describing the alloy deformation behavior were obtained. The calculations of hot deformation parameters (activation energy, Zener-Hollomon parameter) were performed using three models (power-law, exponential, and hyperbolic sine function) describing the flow stress. The highest degree of convergence was shown by the calculation results based on the power function and the hyperbolic sine function. These models can be used to accurately calculate the flow stress at given temperature and strain rate parameters, or to simulate the deformation process. Also, based on processing maps, the authors developed the deformation-speed modes of hot deformation of the Co – 28Cr – 6Mo alloy. It will make it possible to choose the optimal rolling modes in the future. According to the data obtained, favorable temperature-speed conditions for hot deformation are shifted as deformation accumulates to the region of high temperatures and low strain rates. At the same time, the extremely unfavorable zone with negative values of the ξ-criterion, which appears at e = 0.3 – 0.4, continues to grow quite significantly with an increase in the deformation effect. Hot deformation of the Co – 28Cr – 6Mo alloy at low compression ratios (e < 0.2) is more expedient to perform at temperatures above 1150 °C and strain rates of at least 20 s–1. With an increase in deformation degree, it is necessary to choose lower strain rates (1 – 5 s–1) and higher deformation temperature.

show abstract