Factors Affecting Ballability of Mixture Iron Ore Concentrates and Iron Oxide Bearing Wastes in Metallurgical Processing

• Autorzy: Udo M. O. , Esezobor D. E. , Apeh F. I , Afolalu A. S.

Identyfikatory

DOI

10.12911/22998993/86158

• Języki publikacji: EN

Abstrakty

EN

Iron oxide bearing wastes (IOBS) are produced at every part of processing stage of sinter, molten iron and steel production. They are hard to handle and in many cases are stockpiled only to be a source of environmental pollution. However, they can be balled into pellets. Pellets characterized by good ballability values are transportable and recyclable as they can withstand stress without disintegrating back to dust. Yet, ballability is affected by certain factors like the grain sizes of the materials, the moisture and binder contents of the ball mix, wettability of the balled materials and the processing perimeters of the granulator. The objective of this research work is to investigate the factors affecting ballability of mixture of iron ore concentrates and iron oxide bearing wastes in metallurgical processing. The parameters under consideration were: grain size of materials, the moisture contents, speed of balling disc, IOBS and bentonite (binder) contents of the balled mix. The investigation was carried out by balling different volume fractions of mix containing iron oxide concentrate and IOBS using a balling disc and testing the resulting balls for green compressive strength using an universal testing machine. It was found that the ballability of the mixture of iron ore concentrate and IOBS increases as grain sizes of the materials reduce but increases as the moisture contents and IOBS content increase up to an optimum value of moisture content in the mix before it starts to reduce. The ballability also increases along with the speed of the granulator (balling disc) within the limit of this work. An increase in ballability with a slight raise in bentonite content in the mix was observed as well.

Słowa kluczowe

EN

ballabilty; bearing wastes; iron ore concentrates

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2018
• Tom: Vol. 19, nr 3
• Strony: 235--242
• Opis fizyczny: Bibliogr. 20 poz., tab., rys.

Twórcy

autor

Udo M. O.

• Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria

autor

Esezobor D. E.

• Department of Metallurgical and Materials Engineering University of Lagos, Akoka, Lagos State, Nigeria

autor

Apeh F. I

• Nigeria Building and Road Research Institute, Engineering Materials Research, Nigeria

autor

Afolalu A. S.

• Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).