Effect of alkali cation type on compressive strength and thermal performance of the alkali-activated omphacite tailing

Storage of mine tailings in mining industry has led to a series of economic, ecological, and environmental problems. Alkali activation is an effective way to make use of tailings, but pan-alkali and environmental pollution caused by the use of strong alkali is also another knotty problem. In this work, omphacite tailing was employed as a precursor of alkali-activated material, and the relatively mild alkali (NH4OH) was adopted to investigate the...