New Production Solutions for Processing Silicon and Aluminum Production Waste

Кондратьев, В. В.; Nemchinova, N. V.; Иванов, Н. А.; Ershov, V. A.; Sysoev, I. A.

doi:10.1007/s11015-013-9754-5

Cited by 27 publications

(21 citation statements)

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“…Отходы собираются в виде влажных или сухих порошков [1][2][3][4][5][6][7]. По оценкам [1,2,6,7] при производстве металлического кремния ежегодно образуется более 100 000 тонн отходов [7].…”

Section: Materials Scienceunclassified

“…В табл. 3 Было обнаружено, что в матрице существует графит особой формы в дополнение к вермикулярному графиту и сферическому графиту, как показано на рис. 4, б. Этот вид морфологии графита представлен в виде сферического графита с небольшим хвостиком, который в работе [18] был назван графитом-головастиком (искаженным графитом).…”

Section: результаты и их обсуждениеunclassified

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Study of the effect of a combined modifier from silicon production waste on the properties of gray cast iron

Karlina,

Kondratiev,

Sysoev

et al. 2024

Metal Working and Material Science

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Introduction. During the metallurgical production of silicon, waste is generated that accumulates in dumps, causing harm to the environment. Disposal and recycling of solid waste from silicon production is especially important because They contain important chemical compounds (silicon dioxide, silicon carbide, carbon nanotubes) that can be used in other industries, which will bring greater economic value. Considering the possibilities for extracting these useful components from silicon production waste, it is necessary to bring processing technologies to the stage of widespread practical application. Therefore, the development of a special waste processing technology to obtain a useful product in the form of a composition of silicon dioxide and silicon carbide remains an urgent problem. Purpose of the work: to study the formation of the morphological form of graphite with the introduction of nano-modifiers from silicon production waste. The work examined samples of gray cast iron after modification with a combined modifier obtained from silicon production waste. The research methods are mechanical tests for statistical tension, analysis of the chemical composition and metallographic studies. Results and discussion. It was revealed that the mechanical properties of gray cast iron increased by 30-50% after modification with a combined modifier, compared with witness samples. The morphology of graphite is an important parameter affecting the properties of cast iron. It has been established that during the modification process the morphology of graphite changes from lamellar to vermicular. Specimens of gray cast iron with vermicular form of graphite have high strength values compared to specimens of gray cast iron with lamellar form of graphite. The presented results confirm the promise of the developed approach aimed at obtaining new classes of modifiers and products made of gray cast iron with a high range of mechanical properties.

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Section: Materials Scienceunclassified

Section: результаты и их обсуждениеunclassified

Study of the effect of a combined modifier from silicon production waste on the properties of gray cast iron

Karlina,

Kondratiev,

Sysoev

et al. 2024

Metal Working and Material Science

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“…Natural additives encompass crushed volcanic and sedimentary rocks, diatomites, volcanic ash, and tuff. Within technogenic additives lie waste or byproducts from various industries, such as fly ash, granulated blast furnace slag, and microsilica [25][26][27][28][29]. Microsilica emerges as one of the most potent and finely dispersed mineral additives.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Karlina,

Gladkikh

2023

Minerals

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The integration of nanotechnology across various industries has significantly enhanced product quality and manufacturing technologies for diverse materials. Within the construction sector, the adoption of nanomaterials has sparked the advent of innovative construction methods. Extensive studies have been conducted on various nanomaterials, particularly micro- and nanosilica, exploring their use as partial substitutes for cement in concrete formulations. This study aimed to furnish a comprehensive overview of silica’s impact on concrete properties in civil engineering and road construction. Environmental concerns and potential hazards necessitate the development of strategies for managing industrial by-products. Metallurgical processes generate several such by-products, among which is silica fume—a residue from smelting in the silicon and ferrosilicon industries. Waste silica dust and slurries have proven highly effective in creating high-strength, high-performance concrete. The study presents a literature review focusing on micro- and nanosilica derived from production waste at ferroalloy and silicon plants. It includes a comparative analysis of the primary characteristics of microsilica from various sources and examines the extensive use of microsilica as a modifying additive in building materials. Analyzing different concrete compositions with and without fumed silica determined the ranges of results for each indicator. The incorporation of micro- and nanosilica into the concrete mix demonstrated its efficacy. The morphology of waste silica particles, characterized by the smooth and spherical surfaces of micro- and nanosilica particles, significantly influences the workability properties of the concrete.

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“…Currently, the requirements for energy and resource saving [1][2][3][4][5] are being tightened due to the problem of an increasing shortage of electricity [6][7][8][9][10][11]. This is due to the fact that the pace of development of large cities exceeds the previously laid down: the social sphere, housing construction and industrial production are developing.…”

Section: Introductionmentioning

confidence: 99%

Technology of Aerodynamic Separation of Industrial Room

Vedernikova¹,

Rusetskaya²,

Говорков³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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To obtain an appropriate picture of emissions through the aeration lantern of the block based on the location of the experimental area, a flexible shut-off screen was applied together with electrolyzers RA-400. Sampling was carried out along the horizon of the upper edge of the electrolyzer with the fully covered tub and during the exposing by means of the quickdetachable/installed attachments. The study of aerodynamics and the sampling of extended sourcesthe aeration lantern, input ventilation and the area above the depressurized electrolyzerwas carried out under moderate weather conditions (no strong winds) and close to mean standard atmospheric pressure and humidity. According to the results of instrumental studies through the use of formulas for the calculation of aerodynamic parameters, the following characteristics of dust-gas-air flows organized by the gas suction and gas-cleaning systems were calculated: the density of gas medium in operating conditions; the dust-gas-air flow motion speed at the site of measurement; the volume of gas under operating conditions; the volume of gas under normal conditions. With the electrolyzer covered, at the point closest to the gas removal system, the concentration of hydrogen peroxide in the sample was the lowest. Further, with the increasing distance from the gas removal system, the concentration increased slightly, but at both points was below the MAC (maximum allowable concentration). The concentration of hydrogen peroxide (expressed as fluorine) in the gas removal system was defined. In the mode of replacement of anodes, the volume of gas removal increased. The concentration of hydrofluoride was also below the maximum permissible concentration in the operation area. The concentration increases before the anodes replacement point was negligible, and at the third point after the covers removal was quite noticeable. The concentration of hydrogen peroxide (expressed as fluorine) in the gas removal system is defined.

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New Production Solutions for Processing Silicon and Aluminum Production Waste

Cited by 27 publications

References 0 publications

Study of the effect of a combined modifier from silicon production waste on the properties of gray cast iron

Study of the effect of a combined modifier from silicon production waste on the properties of gray cast iron

Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Technology of Aerodynamic Separation of Industrial Room

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