Study the Recycling of Red Mud in Iron Ore Sintering Process

• Autorzy: Khalifa Ahmed Abdelazim , Bazhin Vladimir Yurievich , Kuskova Yana Vadimovna , Abdelrahim Ahmed , Ahmed Yasser Momtaz Zaki

Identyfikatory

DOI

10.12911/22998993/137966

• Języki publikacji: EN

Abstrakty

EN

Red mud (RM), the by-product generated during the alumina extraction process, is considered a valuable secondary raw material, since iron (20–54%) represents its major constituent. Accordingly, the suitability of recycling this RM in the sintering process of Egyptian iron ore was studied. The effect of adding different amounts of RM to the sinter charge mixture (0–10 wt.%) on the sintering process performance as well as the chemical, physical and mechanical properties of the produced sinter was investigated. The results revealed that increasing the amount of red mud in the sinter charge mixture leads to a high improvement in the strength of the produced sinter till reaching a maximum at 7% addition, which deteriorates thereafter. Meanwhile, owing to the fine nature of the red mud, increasing its contents in the sinter charge mixture leads to reduced speed of the sintering process, which consequently affects the productivity at the blast furnace yard. The sinter produced with the addition of 3% red mud shows the highest reducibility. These results indicate the suitability of recycling RM in the Egyptian iron ore sintering process with an amount not higher than 3 wt.% of the total sinter mixture charge.

Słowa kluczowe

EN

red mud; utilization; Egypt; iron ore; sintering process; sinter charge mixture; sinter strength; sinter production

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2021
• Tom: Vol. 22, nr 6
• Strony: 191--201
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Khalifa Ahmed Abdelazim

• Department of Metallurgy, Saint Petersburg Mining University, St. Petersburg, 2, 21st Line, St Petersburg 199106, Russia

• https://orcid.org/0000-0003-3092-1516

autor

Bazhin Vladimir Yurievich

• Department of Minerals Technology and Processing, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt

• https://orcid.org/0000-0001-8231-3833

autor

Kuskova Yana Vadimovna

• Department of ATP, St. Petersburg mining University, St. Petersburg, 2, 21st Line, St Petersburg 199106, Russia

• https://orcid.org/0000-0002-4382-3301

autor

Abdelrahim Ahmed

• Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Finland

• https://orcid.org/0000-0003-0328-1402

autor

Ahmed Yasser Momtaz Zaki

• Refractory and Ceramic Materials Department, Advanced Materials Division, Central Metallurgical Research and Development Institute, CMRDI, PO. Box 87, Helwan, Cairo, Egypt

• https://orcid.org/0000-0001-6152-4471

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