Solidification/stabilization of gold mine tailings using calcium sulfoaluminate-belite cement
نویسندگان
چکیده
منابع مشابه
Effect of Calcium Carbonate Fineness on Calcium Sulfoaluminate-Belite Cement
This study investigated the hydration characteristics and strength development of calcium sulfoaluminate-belite (CSAB) cements incorporating calcium carbonate (CC) powders with various particle size distributions and different gypsum amounts. In general, the CSAB hydration was accelerated by the CC powder, but the acceleration and resulting strength improvement were more effective with finer CC...
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The objective of this study was the preparation and characterization of high belite sulfoaluminate cement (HBSC) from industrial residues. HBSC promises eco-friendly building materials with great mechanical performance at earlier ages than Ordinary Portland Cement (OPC). Preliminary results show the formation of main phase dicalcium silicate (C2S) and ye’elimite (C4A3$) at 1250°C, as determined...
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Current research emphasis is more on the utilization of materials that are considered as waste. Tailings and fly ash are major category of industrial wastes, whose disposal is problematic from environmental point of view. In this present research, Industrial byproducts, namely, lime (CaO) and class F type fly ash have been used as candidate materials along with the partial addition of ordinary ...
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South Africa is a mineral-rich country with metals such as gold, copper, and platinum group metals being exploited to a significant extent in the country’s mining history. Mining generates large volumes of tailings, with consequent disposal and environmental problems. By far the most gold that has been mined in South Africa (98%) has come from the Witwatersrand goldfields (Messner, 1991). The g...
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Mining activity always has high impact on its surroundings, being waste deposition the cause of multiple and complex problems to the environment. One of them is Acid Mine Drainage (AMD), causing acid water percolation through large areas in the mine site. Portugal was a prosper tungsten producer from the beginning of the XX century, having its apogee during World War II. Nowadays there are mill...
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ژورنال
عنوان ژورنال: Journal of Cleaner Production
سال: 2019
ISSN: 0959-6526
DOI: 10.1016/j.jclepro.2019.118008