Dovbenko V. Optimization of aluminum production technology from secondary raw materials

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0823U101508

Thesis Registration Form

0823U101508.pdf

Applicant for

Specialization

  • 136 - Металургія

Specialized Academic Board

Наказ №9294

Physico-technological Institute of Metals and Alloys of National Academy of Sciences of Ukraine

Essay

The dissertation is dedicated to the further development of the theory and mechanism of processing foundry aluminum slag, allowing to address the current scientific and practical issue of processing foundry aluminum slag at the same facility. Theoretical foundations and the mechanism for obtaining metallic aluminum from foundry slag are presented. It is based on the temperature-dependent characteristics of chemical reactions involving aluminum. The process consists of two stages: pyrometallurgical and hydrometallurgical. The first stage involves a change in the valency of aluminum from three to one and vice versa depending on the temperature at which the reactions occur. An efficient technological scheme and method for processing aluminum slag in an electric-thermal installation are provided. This scheme involves delivering the slag onto the surface of the aluminum melt and melting the slag using an electric arc. The aluminum slag is melted in an electric arc chamber, into which the aluminum melt is introduced from the holding furnace. The level of the melt in the electric arc chamber is raised to a specified distance from the electrode, and the length of the electric arc is controlled during the arc's combustion by adjusting the gas pressure in the electric arc chamber. The melting of the aluminum slag is carried out while maintaining the circulation of the molten metal between the electric arc chamber and the holding furnace, and this circulation is maintained by the action of an electrodynamic force generated by linear asynchronous stators installed on the pipelines connecting the crucible with the holding furnace. The electric-thermal installation for processing aluminum slag consists of a melting holding furnace and an electric arc vacuum chamber positioned above it with a slag mixture dosing device installed. Additionally, two pipelines are installed between the melting holding furnace and the electric arc vacuum chamber. The first pipeline is for pressurization, and the second is for evacuation. These, together with the chamber and the furnace, form a closed hydraulic circuit. In the first pipeline, a pressurizing linear asynchronous stator is installed, and along the second pipeline, a linear asynchronous stator for evacuating the melt from the chamber to the furnace is installed.

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Research papers

Верховлюк А.М., Довбенко В.В., Червоний І.Ф. Технології переробки алюмінієвого скрапу // ScienceRise. – 2019. – № 12 (65). – С. 47–54. https://doi.org/10.15587/2313-8416.2019.189686

Верховлюк А.М., Довбенко В.В., Червонный И.Ф. Технологические особенности переработки алюминиевого шлака // Modern Scientific Researches. Yolnat PE, Minsk, Belarus. – 2019. – P. 9–18. https://doi.org/10.30889/2523-4692.2019-09-01-003

Verkhovliuk A.M., Dovbenko V.V., Zhelesniak A.V., Chervonyi I.F. Investigation of the metallurgical yield of aluminum from foundry slag// International periodic scientific journal “Modern engineering and innovative technologies”. – 2020. – Issue 12. – Part 2. – P. 5–16. https://doi.org/10.30890/2567-5273.2020-12-02-055

Dovbenko, V., Verkhovliuk, A. Processing of aluminum slag with the use of soda // Science and Innovation. – 2023. – 19(4). – Р. 93–102. https://doi.org/10.15407/scine19.04.093

Довбенко В.В., Верховлюк А.М. Особливості одержання алюмінію з відходів ливарного виробництва // Процеси лиття. – 2020. – № 2 (140). – С. 3–7. ISSN 0235-5884 (Print), ISSN 2707-1626 (Online)

Verkhovliuk A.M., Dovbenko V.V., Chervonyi I.F. Processing of aluminum slag // Колективні монографії «Erbe der europäischen wissenschaft" Heritage of European science: engineering and technology, informatics, transport, architecture». Karlsruhe, Germany. – 2020. – Book 2. – Part 3. – P. 9-36. DOI: 10.30888/978-3-9821783-5-6.2020-02-03-080.

Верховлюк А.М., Щерецький О.А., Каніболоцький Д.С., Довбенко В.В. Вплив технологічних факторів на властивості високоміцного алюмінієвого сплаву системи 14 Al-Zn-Mg-Cu // Науково-технічний журнал “Металознавство та обробка металів”. – 2020. – № 1. – С. 27–36. https://doi.org/10.15407/mom2020.01.027

Верховлюк A.M., Довбенко В.В., Русаков П.В. Електротермічна установка для переробки відходів алюмінієвого виробництва // Процеси лиття. – 2021. – №1(143). – С. 11–18. https://doi.org/10.15407/plit2021.01.011

Верховлюк A.M., Щерецький О.А., Довбенко В.В., Червоний І.Ф. Науковометодичний аналіз переробки алюмінієвих шлаків // Процеси лиття. – 2021. – №3(145). – С. 3–11. https://doi.org/10.15407/plit2021.03.003

Довбенко В.В. Екологічні аспекти переробки алюмінієвого шлаку // Науковотехнічний журнал “Металознавство та обробка металів”. – 2023. – № 3. – С. 50–55. https://doi.org/10.15407/mom2023.03.050

Патент №124750 України. Спосіб і установка для переробки алюмінієвого шлаку / Верховлюк A.M., Русаков П.В., Сергієнко Р.А., Довбенко В.В., Червоний І.Ф. // власник ФТІМС НАН України. – № а2020 00450 заявл. 27.01.2020. Опубл. 10.11.2021, бюл. №45.

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