Morphology and wear of high chromium and austempered ductile iron balls as grinding media in ball mills

B. R.N. Murthy, Ravichandra Rangappa

Research output: Contribution to journalConference articlepeer-review

Abstract

High chromium balls are recognized as better grinding media in terms of wear rates than forged steel balls, which are conventional grinding media in the milling process of iron ore. In this research work, the wear rate of high chromium balls and austempered ductile iron (ADI) balls as crushing media in a ball mill are compared. ADI are prepared by austenitizing the spheroidal graphite (SG) iron balls at 920 °C for one hour, and step austempering heat treatments were given, which includes the first step austenitizing at 300 °C for 15 min, followed by a second step austenitizing at 400 °C for 60 min. The wear rates were estimated when both balls were used separately by maintaining the same machining conditions and when the balls are mixed. The grinding wear conduct of both materials is evaluated for wear loss in wet grinding conditions. The experimental results reveal that the performance of ADI balls is better than high chromium balls when tested separately and mixed. Results also indicate that the wear rates/revolutions will decrease when the operating period increases.

Original languageEnglish
Article number012201
JournalJournal of Physics: Conference Series
Volume2070
Issue number1
DOIs
Publication statusPublished - 17-11-2021
Event2nd International Conference on Advances in Physical Sciences and Materials 2021, ICAPSM 2021 - Virtual, Online, India
Duration: 12-08-202113-08-2021

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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