Location
Innovation Lab, Room 213
Start Date
4-3-2025 9:30 AM
End Date
4-3-2025 10:00 AM
Presentation Date
3 April 2025, 9:30am - 10:00am
Biography
I am currently a Ph.D. student in Mining Engineering at Missouri University of Science and Technology, specializing in the development of cemented paste backfill for underground mining. I hold both a Master’s and a Bachelor’s degree in Environmental Science and Engineering from China University of Geosciences (Beijing).
My research focuses on utilizing mine and industrial solid waste to develop high-performance, low-cost, and low-carbon footprint paste backfill materials. I investigate hydration mechanisms, microstructural evolution, and mechanical performance to enhance ground stability while promoting waste recycling in mining operations.
With a strong background in solid waste recycling and sustainable mining solutions, I am committed to advancing eco-friendly backfill technologies that improve both mine safety and environmental sustainability. I am eager to collaborate and contribute to the development of more sustainable mining practices.
Meeting Name
2025 - Miners Solving for Tomorrow Research Conference
Department(s)
Mining Engineering
Document Type
Presentation
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2025 Elsevier, All rights reserved
Utilization of Low-carbon Cementitious Materials in Mine Backfilling
Innovation Lab, Room 213
Comments
Advisor: Guang Xu
Abstract:
This study investigated the development of low-carbon cemented paste backfill (CPB) materials utilizing silicomanganese slag (SMS), granulated blast furnace slag (GBFS), carbide slag (CS), and flue gas desulfurization gypsum (FGD gypsum). Aiming to enhance the sustainable utilization of industrial waste in underground mining, this research evaluated the hydration mechanisms, microstructural evolution, mechanical properties, and leaching risks of SMS-based CPB. Results indicated that SMS has a slower early-stage hydration reaction than GBFS but accelerates over time, achieving compressive strengths of 28.7 MPa, 41.2 MPa, and 49.9 MPa at 3, 7, and 28 days, respectively. Additionally, the cementitious system effectively stabilizes heavy metals, with manganese leaching concentrations remaining below regulatory limits. This study provides a sustainable alternative for mine backfilling, promoting waste valorization, ground support stability, and environmental safety in underground mining applications.
Keywords:
Cemented paste backfill, hydration, mechanical properties, heavy metal stabilization.
Presentation was given from the article entitled "A low-carbon cement based on silicomanganese slag and granulated blast furnace slag: Hydration process, microstructure, mechanical properties and leaching risks"