Refining of Primary Aluminum from Vanadium

Bykov, Petr O.; Kuandykov, Almaz B.; Zhunusov, A. K.

doi:10.4028/www.scientific.net/ddf.410.405

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…preliminary processing of filter grains for cleaning from aluminum scrap (Figure 1), including grinding of granules in a drum mill and classification of the metal and non-metal parts of the processed material; Figure 1 -General view of used filters metallurgical processing of separated aluminum scrap by remelting in an induction crucible furnace and refining using complex technology described by the authors in [5];…”

Section: Methodsmentioning

confidence: 99%

Environmental Aspects of Processing Granular Filters for Primary Aluminum Refining

P. O. Bykov,

A. B. Kuandykov,

K. Sh. Aryngazin

et al. 2024

NiTK

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This article presents the results of experimental studies on the involvement in the processing of used filters from ash and slag waste used in the refining of primary aluminum as a filler in the production of concrete for building products. The research was carried out within the framework of grant funding from the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan under the competition «Zhas Galym» under the project IRN AR19175493 «Development of technology for refining primary aluminum with filters with an active surface». The recycling of used grain filters was carried out in three stages: preliminary processing of filter grains to remove aluminum scrap; metallurgical processing of separated aluminum scrap by remelting in an induction crucible furnace and refining using complex technology described by the authors in the work; obtaining a concrete mixture based on crushed waste filter grains, quartz sand and bauxite sludge, screenings from crushing rocks with a fraction of 20–30 mm and Portland cement to obtain samples of construction products. According to the test results, the tensile strength of concrete samples of building products is 20.89–37.75 MPa, depending on the content of Portland cement (from 20 to 40 %) and corresponds to the class of heavy concrete. Keywords: aluminum, granular filter, ash, waste, recycling.

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Section: Methodsmentioning

confidence: 99%

Environmental Aspects of Processing Granular Filters for Primary Aluminum Refining

P. O. Bykov,

A. B. Kuandykov,

K. Sh. Aryngazin

et al. 2024

NiTK

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“…The purpose of this work is to study the physicochemical properties of Al-B ligatures with different boron content -1.08%, 2.77% and 4.5%. It was found that a large amount of B in the master alloy, with accelerated cooling, which has a narrower crystallization range with a lower temperature, contributes to the refinement of the internal structure of the grain throughout the section [23].…”

Section: Experimental Studymentioning

confidence: 99%

Study of the Boron Effect on the Physicochemical Properties of Ligatures

Cherepanov

Кукарцев

2021

DDF

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One of the effective ways to improve the quality of semi-finished products made from aluminum alloys is to eliminate the columnar and fan-shaped structure in them, refine the grain and achieve homogeneity, is modification and alloying. Modification of the melt is carried out using ligatures and allows a significant increase in the casting rate without fear of an excessive increase in the degree of zonal segregation during crystallization, as well as ensuring the uniformity of the chemical composition over the section. An important role in the quality of modification is also played by the manufacturing technology of the master alloy itself, which should ensure an increase in the cooling rate during crystallization. To obtain an alloy with the required properties, the quality of the charge materials used must be considered. First of all, this concerns master alloys, which are used for alloying and modifying the alloy. The most common for the manufacture of ingots and shaped castings are master alloys containing boron or boron and titanium. The boron content in these ligatures is 1-5%. It is generally accepted that a large amount of boron (except for the rise in the cost of the alloy itself) upon accelerated cooling promotes the refinement of the internal structure of the grain, but can lead to an increase in large inclusions of TiB2.

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“…Many technologies for processing wastes from alumina production are expensive for the implementation of the presented studies, and most of them are accompanied by complexity and multi-stage processing processes. According to its composition, bauxite waste can be used in various industries [ [3], [4], [5], [6], [7]].…”

Section: Introductionmentioning

confidence: 99%

Research of the production of iron ore sinter from bauxite processing waste

Zhunussova,

Bykov,

Zhunusov

et al. 2023

KIMS/CUMR/MShKP

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This article presents the results of a study of the agglomeration of waste alumina ferrous sands and the use of sinter as a substitute for metal charge in steelmaking. At this time, in the process of processing bauxite, JSC "Aluminium of Kazakhstan" produces a large number of fines, which is of great interest to ferrous metallurgy. Wastes from alumina production include a variety of waste sludge, including red, gray sludge, and ferrous sands. According to the chemical composition, ferrous sands can be attributed to iron ore material with a high content of alumina. Most of these problems are eliminated by preliminary agglomeration of fines. In this work, agglomeration studies made it possible to establish the optimal parameters for sintering ferrous sands. When using 10% fuel, the best sintering performance is achieved. The optimal parameters for sintering ferrous sands mixed with other metallurgical wastes are such as productivity - 0.92 t / m2 h, mechanical strength - 80.0%, sintering speed - 19.3 mm/min, yield - 82.0%, the maximum temperature in the layer is 1340 °С. The results of laboratory melt carried out in an induction melting furnace indicate the possibility of using a sinter as a substitute for metal charge in iron and steel smelting. The conducted melting confirms the fundamental possibility of using a sinter, made from waste products of alumina production of ferrous sands, is a man-made charge material that is suitable for use as a 5% additive to the metal charge in the smelting of iron-carbon alloys similar in composition to cast irons.

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Refining of Primary Aluminum from Vanadium

Cited by 3 publications

References 17 publications

Environmental Aspects of Processing Granular Filters for Primary Aluminum Refining

Environmental Aspects of Processing Granular Filters for Primary Aluminum Refining

Study of the Boron Effect on the Physicochemical Properties of Ligatures

Research of the production of iron ore sinter from bauxite processing waste

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