| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
NbC-containing High Carbon Steel Grinding Media Development |
| Author(s) |
Casey Brown, John Heerema, Charles Matthew Enloe, Erik Spiller, John G Speer, Emmanuel De Moor |
| On-Site Speaker (Planned) |
Casey Brown |
| Abstract Scope |
The purpose of this work was to assess the effect of niobium alloying and NbC eutectic carbides in the microstructure on the performance of steel grinding media. Grinding is essential in the mining industry to promote mineral liberation in extracted ore and accounts for approximately 40% of all mining energy costs. Laboratory-prepared heats were produced via vacuum induction melting of industrial bar stock with a composition of Fe-1.0C-0.96Mn-0.22Si-0.26Cu-0.11Ni-0.50Cr-0.005V-0.012Nb and incremental alloying of Nb with concentrations of 0.01, 0.25, 0.5, and 1.0 wt %. NbC has been reported to reach hardness values up to 3000 HV. SEM examination revealed eutectic NbC networks that were broken up and distributed within the microstructure during hot rolling. Dry sand/rubber wheel (DSRW) testing was performed to evaluate wear resistance as a function of Nb alloying. Results showed a 65% decrease in mass loss between the 0.01 and 1.0 wt pct Nb alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Characterization |