Non-ferrous mine waste dumps globally generate soil pollution characterized by low pH and high metal(loid)s content. In this study, the steel slag (SS), gypsum (G), and coal gangue (CG) combined with functional bacteria consortium (FB23) were used for immobilizing metal(loid)s in the soil. The result shown that FB23 can effectively decrease As, Pb,...
Published in Metallurgical Research & Technology
The effects of FetO on the characteristic melting temperature, viscosity, and structure of Na2O3-B2O3-CaO-SiO2-Al2O3 slag were investigated. Understanding the viscous behavior and structure of borate slag containing FetO can guide the design of mold powders for copper alloy casting. The melting temperature (Th) suddenly increased and exceeded 800 °...
Published in Materials Science-Poland
In recent years, ready-mix concrete plants have increasingly utilized premixed blended hydraulic cement. These formulations incorporate a higher mineral admixture content than traditional ternary concrete mixtures, resulting in improved durability, compactness, and reduced hydration heat during curing. This study examined four concrete proportions ...
V preteklosti so se na dolenjskih tleh ukvarjali s pridobivanjem železa iz rude. Gradili so talilne peči iz gline in s pomočjo oglja iz rude pridobivali železo. Kot stranski produkt je nastajala tudi žlindra. Za lažjo predstavo in boljšo interpretacijo arheoloških ostankov z arheološkega najdišča Cvinger pri Dolenjskih Toplicah, smo izvedli poskus ...
Published in Journal of Physics: Conference Series
In India, major cities have aged infrastructures that produce significant construction and demolition (C&D) waste. This trash has an adverse impact on the environment and poses challenges for disposal. To address the same, recycled aggregates (RA) are considered in place of natural aggregates (NA), and geopolymer binders, namely fly ash (FA) and sl...
Des millions de tonnes de déchets sont traités chaque année dans le monde entier. Il existe de grandes disparités dans les techniques de traitement des déchets en fonction du niveau de développement des pays. En France, une start-up angevine nommée Néolithe propose une nouvelle voie de traitement des déchets non dangereux non inertes, la fossilisat...
Non-destructive evaluation techniques are increasingly used for the investigation of reinforced concrete structures in marine environment. In this paper, the possibility of evaluating chloride profiles by Electrical Resistivity Tomography (ERT) on Blast furnace slag (BFS) concrete at a long curing period so having high electrical resistivity was st...
Due to their structural and economic performance, high performance metal fiber concretes are increasingly used in construction, but with the addition of metal fibers, workability decreases as the amount of fibers added increases. In order to improve workability, a larger quantity of fines should be used than for ordinary concrete. The use of granul...
Published in Environmental pollution (Barking, Essex : 1987)
Here, for the first time, we report the concentrations and isotopic data of Ag in a variety of ore and metallurgical samples and forest soils that have been polluted due to Ag-Pb smelter emissions. Similar to the Ag concentrations, we identified a large range of δ109Ag values (from -0.8 to +2.4‰), a ∼3‰ spread, within the primary and secondary mate...
Published in Heliyon
The flash smelting process is widely used in copper production. In the process, sulfidic feed and flux are oxidized. The heat released in the reactions melts the feed which forms a slag layer through which matte droplets must settle. Understanding the different phenomena affecting the settling is important to minimize losses. Due to the high temper...
