Use of Aluminum-Containing Waste in Production of Ceramic Materials for Various Purposes

Abdrakhimov, V. Z.

doi:10.1007/s11148-013-9540-8

Cited by 17 publications

(6 citation statements)

References 3 publications

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“…Various manufacturing flowsheets are proposed for recycling electrolyte-containing wastes of aluminum production [5][6][7][8][9][10][11][12][13][14][15][16]; some of them are implemented in industry. The purification technology of removal impurities from the DRM material was not in fact considered, because definite difficulties appear due to variables of the chemical and granulometric compositions and, correspondingly, the distinction of the properties of this material even of the same category, which complicates its recycling possibilities.…”

Section: Mineral Processing Of Nonferrous Metalsmentioning

confidence: 99%

“…However, a considerable amount of silicon oxide (of about 1.0%) is present in it in this case. The further use of this product is possible for the pro-duction of aluminum-silicon alloys or ceramic materials [15,24]. CONCLUSIONS (i) To concentrate sweepings of dust-removing machines, the following processing flowsheet is proposed: milling-classification-reverse flotationthickening.…”

Section: Selection Of the Optimal Fractional Compositionmentioning

confidence: 99%

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Recovery of Silicon and Iron Oxides from Alumina-Containing Sweepings of Aluminum Production

Vasyunina

Belousov

Dubova

et al. 2017

Russ. J. Non-ferrous Metals

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The method of recovery of contaminating components from sweepings of the aluminum production for their further return into the electrolyzer is proposed. To concentrate the material, the following processing flowsheet is proposed: milling-classification-reverse flotation-thickening. For the most complete removal of silicon and iron oxides during the flotation of sweepings, the Flotigam 7266 flotation reagent produced by Clariant (Germany), which is a mixture of primary fatty alkyl amines, is used. To remove carbon particles, the combination of pine oil in a mixture with kerosene is used. Flotation is performed using a FML 0.3 flotation machine. The initial material, chamber product, and tails are analyzed for the content of carbon and aluminum, iron, and silicon oxides using X-ray spectral (XSA), X-ray phase (XPA), and chemical analyses. It is established that processing the total material mass does not make it possible to acquire a product with an acceptable content of silicon and iron oxides. Based on the XPA of various fractions of the initial material, it is proposed to process the material fractions containing the minimal amount of contaminating substances (carbon and silicon and iron oxides). Two fractions are selected for processing using the flotation method by the XRS results of various material fractions: -0.071 mm and +5.0 mm. When processing the first of them, the chamber product of the acceptable quality is acquired. A product with a high content of alumina and fluorinated components at low carbon and iron oxide concentrations but a considerable amount of silicon oxide is acquired from a coarse electrolyte-containing fraction (+5.0 mm). The further use of this product is possible to fabricate aluminum-silicon alloys.

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Section: Mineral Processing Of Nonferrous Metalsmentioning

confidence: 99%

Section: Selection Of the Optimal Fractional Compositionmentioning

confidence: 99%

Recovery of Silicon and Iron Oxides from Alumina-Containing Sweepings of Aluminum Production

Vasyunina

Belousov

Dubova

et al. 2017

Russ. J. Non-ferrous Metals

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“…At the same time, ash and slag waste is a valuable secondary raw material for various industries; therefore, the development of methods for their disposal is an urgent task. Numerous studies indicate there is a demand for ash and slag waste in the construction industry for the production of bricks and ceramics [ 13 , 14 , 15 , 16 ], thermal insulation materials [ 17 , 18 , 19 , 20 ], independent binders or active additive to organic and inorganic binders [ 18 , 21 , 22 ], concrete [ 23 , 24 , 25 , 26 ], composite materials [ 27 , 28 , 29 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Structural Formation of Soil Concretes Based on Loam and Fly Ash, Modified with a Stabilizing Polymer Additive

et al. 2022

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Finding new ways of recycling production waste to improve the characteristics of various building materials is an urgent scientific task. This article substantiates the possibility of the disposal of fly ash in the composition of soil concrete, which is used in the construction of the structural layers of road pavements, foundations of buildings and structures, as well as sites for various purposes. The scientific novelty lies in the fact that the structure formation of soil concretes based on loam and fly ash and modified with a stabilizing additive is being studied for the first time. It was found that the investigated fly ash, according to its hydraulic properties, is classified as latent active and can be introduced into the compositions of road soil concrete modified with additives of various resources. The effectiveness of the complex method of stabilization, due to changes in soil properties as a result of the use of the binding and stabilizing additives of polymer nature “Kriogelit”, is shown. It was found that the optimal content of binder and fly ash in the samples was 8 and 10 wt.%, respectively. It was established that the use of the stabilizing additive “Kriogelit” makes it possible to obtain soil concrete with the highest strength (compressive strength 2.5 MPa, flexural strength 0.5 MPa) and frost resistance of at least F15. The microstructure, the degree of dehydration and carbonization, and the phase composition of the initial raw mixtures and soil concretes stabilized with the addition of “Kriogelit” were studied by methods of scanning electron microscopy, X-ray diffraction analysis, differential scanning calorimetry, thermogravimetry, and infrared spectroscopy. It was shown that organo-mineral complexes, with the participation of polymer and montmorillonite, are formed in stabilized soil concrete. It was revealed that structure formation is accompanied by the physical adsorption of the polymer on active centers of silicate minerals, carbonization, and hydration–dehydration processes. It was found that the reason for the increase in the strength of stabilized soil concretes is the hydrophobization of the porous structure of minerals, as well as the formation of calcium oxide silicate and dicalcium hydrated silicate. By the method of performing biotests with the test objects Daphnia magna Straus and Chlorella vulgaris Beijer, it was proven that the developed road concretes modified with the stabilizing additive “Kriogelit” do not have an acute toxic effect on the test objects and are safe for the environment and human health.

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“…Для рециклинга электролитсодержащих отходов алюминиевого производства предлагаются различные технологические схемы [5][6][7][8][9][10][11][12][13][14][15][16], часть из которых реализована в промышленности. Технология очистки материала ПУМ от примесей фактически не рассматривалась, так как определенные трудности возникают из-за переменных химического и гранулометрического составов, а соответственно, и различия свойств данного материала даже одной категории, что осложняет возможности его рециклинга.…”

Section: Introductionunclassified

Silica and Iron Oxide Extraction From Alumina-Containing Sweepings of Aluminum Production

Vasyunina¹,

Belousov²,

Dubova³

et al. 2018

Izv.VUZ. Tsvet. Met.

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Use of Aluminum-Containing Waste in Production of Ceramic Materials for Various Purposes

Cited by 17 publications

References 3 publications

Recovery of Silicon and Iron Oxides from Alumina-Containing Sweepings of Aluminum Production

Recovery of Silicon and Iron Oxides from Alumina-Containing Sweepings of Aluminum Production

Structural Formation of Soil Concretes Based on Loam and Fly Ash, Modified with a Stabilizing Polymer Additive

Silica and Iron Oxide Extraction From Alumina-Containing Sweepings of Aluminum Production

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