Reuse or Disposal of Waste Foundry Sand: An Insight into Environmental Aspects

Cioli, Flavio; Abbà, Alessandro; Alias, Carlotta; Sorlini, Sabrina

doi:10.3390/app12136420

Cited by 21 publications

(4 citation statements)

References 51 publications

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“…This was ensured by leading metallurgical enterprises, including PJSC ArcelorMittal Kryvyi Rih. A significant volume of metallurgical production leads to the accumulation of a large amount of industrial waste [2,3,4], both within the Kryvyi Rih iron ore basin and in Ukraine as a whole. Annually, 1.5-2 billion tons of new waste were generated, while only about 5-10% were recycled.…”

Section: Introductionmentioning

confidence: 99%

Mineral composition of the processed forming mixture of the Kryvyi Rih Mechanical Repair Plant

Tikhlivets,

Hrytsay,

Filenko

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Currently, Ukraine and developed countries have developed and are constantly updating national waste management programs. Industrial waste as a raw material potential can replace primary sources of natural resources, significantly reduce resource consumption and help ensure the raw material independence of territories and individual countries. The spent molding compound of the Kryvyi Rih Mechanical Repair Plant is a multi-ton solid waste from foundry production. A part of the spent molding mixture is reused as a recyclable material, but the bulk of it is disposed of at municipal solid waste landfills. In this paper, the mineral composition of the spent molding compound is studied in detail, which reveals the possibilities of its reuse. Based on the results obtained, the mineral composition of the spent molding mixture was determined, and mineralogical recommendations were given for the technology of processing the spent mixture. Its involvement in reuse will make it possible to obtain conditioned reconstituted molding sands, free up part of the solid waste landfills, and reduce the negative technogenic load.

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Section: Introductionmentioning

confidence: 99%

Mineral composition of the processed forming mixture of the Kryvyi Rih Mechanical Repair Plant

Tikhlivets,

Hrytsay,

Filenko

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Currently, Ukraine has accumulated about 45 billion tons of industrial waste, located on an area of more than 160,000 hectares. About 1.7 billion tons of new waste is generated every year, while 5-12% of waste is reused, while in developed countries industrial waste is used for 60-80% [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Component composition of the processed forming mixture and mineralogical recommendations for its re-use

Filenko,

Hrytsai,

Tikhlivets

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Modern industrial production is aimed at the development of waste-free technological processes, wider use in the production of waste and by-products. The largest amount of waste is generated from the activities of mining and metallurgical enterprises. One of the problems of foundry production is the disposal of multiton solid waste, about 90% of which is spent molding mixture. Part of the spent mixture is reused as recyclable, but the main mass of it is collected at municipal solid waste landfills. This work is devoted to the study of the component composition of foundry production waste – spent molding mixture with the aim of its reuse. According to the results of the research carried out by the authors, mineralogical recommendations regarding its reuse were provided. Involvement in the reuse of spent molding mixture will allow to free up part of the solid household waste landfills, reduce the negative man-made load on the environment, and additionally obtain conditioned restored molding sands.

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“…The regeneration of spent moulding sand is a way that allows a grain matrix to be recovered and used in casting production on a multicycle basis [3]. Attempts have also been made to use spent moulding sand in other industries such as road construction and the construction industry [4][5][6][7][8]. However, the best way to manage used moulding sand is reusing it in the foundry for the same bonding material technology.…”

Section: Introductionmentioning

confidence: 99%

Selection of Effective Temperature for Thermal Regeneration of Spent Alkali-Phenolic Binder Moulding Sand

Łucarz

2023

Materials

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This article presents the results of research on alkali-phenolic binders used in moulding sands. The results of the presented experiments are part of a search for the optimum conditions to implement the thermal regeneration of spent alkali-phenolic binder moulding sands. The cured binders were subjected to thermogravimetric analysis in aerobic and anaerobic atmospheres. On the basis of the resin decomposition curves, the integral polymer decomposition temperature was determined, and the required thermal regeneration temperature for the alkali-phenolic binder moulding sands that were used was determined according to a specific procedure. The spent moulding sand was subjected to roasting procedures at different temperatures in order to confirm the necessary regeneration temperatures. The effects of the procedures that were carried out were evaluated by means of weight losses and ignition losses, microscopic pictures were taken, and using scanning microscopy, an analysis of the chemical composition in the micro areas on the surfaces of the matrix grains was carried out using scanning microscopy. The indicators for the comparisons between the individual binders were also calculated from the mass losses. The research and analysis that were carried out made it possible to indicate the required temperature for the thermal regeneration of the spent alkali-phenolic binder moulding sand to reduce the involved energy expenditure. The factors that can determine the successful implementation of the process and the obtaining of the best possible grain matrix for reuse were also indicated.

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Reuse or Disposal of Waste Foundry Sand: An Insight into Environmental Aspects

Cited by 21 publications

References 51 publications

Mineral composition of the processed forming mixture of the Kryvyi Rih Mechanical Repair Plant

Mineral composition of the processed forming mixture of the Kryvyi Rih Mechanical Repair Plant

Component composition of the processed forming mixture and mineralogical recommendations for its re-use

Selection of Effective Temperature for Thermal Regeneration of Spent Alkali-Phenolic Binder Moulding Sand

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