On the recycling and use of microsilica in the oil industry

Glazev, M.; Bazhin, V. Yu.

doi:10.1051/e3sconf/202126602010

Cited by 2 publications

(10 citation statements)

References 14 publications

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“…et al and Zimina, D.A. et al [69,70] have demonstrated the sensitivity of microsilica-modified concrete to temperature fluctuations during its hardening process. Under low temperatures, there is a decrease in the rate of hydration and strength enhancement, whereas elevated temperatures result in a sharp increase in these properties.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 98%

“…Under low temperatures, there is a decrease in the rate of hydration and strength enhancement, whereas elevated temperatures result in a sharp increase in these properties. An analysis of earlier studies [69,70] unveiled that the addition of microsilica significantly bolsters the strength of a concrete mix. The degree of strength augmentation is contingent on several variables, including the mix type, cement quality, microsilica quantity, water-soluble additive volume, filler characteristics, and curing conditions.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…For instance, in the oil refining sector, the advancement of technologies and materials for well construction is imperative to meet contemporary standards for well reliability and strength. While the addition of microsilica has been suggested to enhance the properties of cement slurries [69], this fortifying aspect has yet to be wholly proven and substantiated scientifically. Numerous studies have been undertaken to fortify the resistance of the cement ring against dynamic loading.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…In some instances, precipitated SiO 2 is integrated into the composition of RPC concretes alongside microsilica. This inclusion contributes to achieving compressive strength ranging from 200 to 800 MPa and flexural strength of up to 100 MPa [55][56][57][58][59][60][61][62][63][64][65][66][67][68][69]. Aerosil, or fumed silica, is manufactured by burning tetrachlorosilane (SiCl 4 ) in a stream of hydrogen and oxygen:…”

Section: Preparation Of Nanosilicamentioning

confidence: 99%

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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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Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 98%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Preparation Of Nanosilicamentioning

confidence: 99%

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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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“…Under the conditions of Tau-KenTemir LLP, when smelting one ton of technical silicon according to standard technology using vein quartz with a carbonaceous reducer, one ton of microsilica is captured by gas cleaning systems, with 65-70% extraction of silicon into metal [ [2], [3]]. Such average annual technical and economic indicators significantly worsen the economics of production, which not only highlights the problem of the lack of technological solutions for the processing/utilization of microsilica but also creates an environmental problem associated with the storage of technogenic waste [ [4], [5], [6], [7]]. This fact indicates the need for a number of research works to find a competent utilization of microsilica.…”

Section: Introductionmentioning

confidence: 99%

Studies of the thermal stability of briquettes based on microsilica

Baisanov¹,

Vorobkalo²,

Makhambetov³

et al. 2023

KIMS/CUMR/MShKP

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The object of study in this work is microsilica. Microsilica is a pulverized technogenic waste generated during the smelting of technical silicon in industries. The intended use of this material is to obtain the highest quality grades of technical silicon in the end result without the use of expensive quartz. Microsilica is a finely dispersed powder, the direct processing (without preliminary preparation) of which into technical silicon is impossible in ore-thermal furnaces. That requires the manufacture of high-strength briquettes based on it, meeting all the requirements for raw materials for ore-thermal furnaces. In this paper, the authors present the results of a study of the thermal stability of microsilica-based briquettes in order to optimize the physicochemical properties of the resulting briquettes. The tested microsilica briquettes with various carbonaceous reducing agents (screenings of coke of thermo-oxidative coking, screenings of charcoal, etc.) were obtained on a large-scale laboratory roller briquetting press ZZXM-4. The evaluation of the thermal stability of the briquettes was carried out according to the method in which the resulting briquettes are subjected to thermal shock followed by abrasion on a special drum. The thermal resistance of a briquette is defined as the ratio of the weight of the main body of the briquette after the abrasion test to the sum of the weight of the main body and the crumbled material. The dependence of thermal stability on the granulometric composition of briquettes was also determined. The optimal granulometric composition was determined, with which the briquettes have satisfactory thermal stability. Thus, the most technologically advanced granulometric composition of the briquetting charge for reduction smelting in an ore-thermal furnace was established. It is best to use briquettes with granulometric compositions of the appropriate ratio of fractions 0-1; 1-3; 3-5 mm with the following proportions 35/35/30 and 60/20/15, as well as briquettes with particle size distribution within these ranges of variation.

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On the recycling and use of microsilica in the oil industry

Cited by 2 publications

References 14 publications

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

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

Studies of the thermal stability of briquettes based on microsilica

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