Academy of Finland
Funding decision
Name Niinimäki, Jouko
Organisation OY
Project title
Novel synthesis methods for porous ceramics from mine tailings
Decision No. 292526
Decision date 17.06.2015
Funding period 01.09.2015 - 31.08.2019
Funding 323 424
WebFOCUS Report
Project description
Mine tailings are inorganic industrial side streams that are produced increasing amounts in the mining sector, and discarded in tailings ponds. As such, they constitute an environmental liability, but also an unutilized material resource in the circular economy. The goal of the Ceratail project was the utilization of mine tailings in ceramic materials using three different low-energy routes; geopolymerization, phosphate bonding and reaction sintering. Key results of the project were published in international scientific journals, and included development of successful pre-treatment methods that enabled the use of tailings in geopolymerization and in phosphate bonded binders, as well as surprising findings about high reactivity of studied impure kaolinite minerals when utilized in porous geopolymer ceramics. The project established the vast utilization potential of mine tailings in circular economy process industry.