About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2025 Undergraduate Student Poster Contest
|
| Presentation Title |
SPU-11: Cold Sintering of Limestone Mining Waste |
| Author(s) |
Ian T. Blair |
| On-Site Speaker (Planned) |
Ian T. Blair |
| Abstract Scope |
Sintering is the process of fusing particles using high temperature (>1000°C) and often pressure without melting the material. The traditional sintering process for ceramics involves long, high-heat treatments. Cold sintering differs from traditional sintering in that it uses lower temperatures (<300°C) with higher pressures (100-500MPa) and requires transient liquid to facilitate crystalline growth. This research aims to utilize cold sintering as a low-energy method of consolidating mining waste into potentially useful materials. The fines used were sourced from a local limestone mining company and consist of approximately 94% CaCO3 and 5% SiO2. The fines were pressed with varying initial water content and time intervals. Based on measurements taken of the pellets produced through the pressing process, 90% of the bulk density of limestone was achieved in as little as 15 minutes, with densities as high as 93.3% being achieved after 1000 minutes. |