To understand the thermodynamic characteristics of reaction between Al and SiO2 during continuous casting process high-aluminum steel, activity coefficients MnO in molten slags (18–43%) CaO-(33–64%) SiO2-(9–21%) Al2O3-(2–3%) MgO-(<2.4%) were measured at 1400°C, 1450°C 1500°C by experiments Si Mn equilibrium liquid copper slag graphite crucible under mixed gas atmosphere CO Ar. The effects SiO2,...

To relieve the environmental issues of sewage sludge (SS) disposal and greenhouse gas (GHG) emission in China, we proposed an integrated method for the first time to simultaneously deal with these two problems. The hot slags below 920 °C could act as a good heat carrier for sludge gasification and the increasing CO2 concentration in CO2/O2 atmospheres enhanced the production of CO and H2 at 400...

The current research on metallurgical remains from scientific excavations in northeast Yunnan the Bronze Age period is insufficient. In order to study smelting technology of north-eastern Yunnan, samples slag and mineral excavated Yubei Di site Dongchuan were examined. Based outcome characterization analysis, a simulation was executed utilizing software Factsage 7.1 generate phase diagram that ...

Abstract The Incas appropriated many local metallurgical technologies throughout the Andes, each of which had its unique peculiarities and was based on ancestral knowledge. widespread use tin-bronze during Inca expansion, development mining smelting sites, as well ethno-historical records evidence Incas’ interest in copper smelting, a key activity Andes since ca . 1400 BC. However, little is kn...

The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C pSO2 of 0.25 atm. experiments conducted in synthesized spinel crucibles (Fe3O4) controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. compositions characterized an electron probe X-ray microanalyzer. matte slag displaye...

Acid mine drainage (AMD) and mine tailing environments are well-characterized ecosystems known to be dominated by organisms involved in iron- and sulfur-cycling. Here we examined the microbiology of industrial soft coal slags that originate from alum leaching, an ecosystem distantly related to AMD environments. Our study involved geochemical analyses, bacterial community profiling, and shotgun ...

A common feature shared by all pyrometallurgical smelting processes is the production of slag. Slag is usually a byproduct of metal production, although there are processes (such as ilmenite smelting, for example) where the slag is the principal product. Most slags contain a significant amount of heavy metals, the release of which can cause environmental problems. However, the recovery of these...

Mineralogical phases of steelmaking slags have significant influences on the carbonation of the slags. In this paper, the effects of temperature and reaction time on the conversion of calcium-related phases and the carbonation degree of a slag sample were studied. The experimental conditions were a liquid-to-solid ratio of 20 mL/g, a carbon dioxide flow rate of 1 L/min and a slag particle size ...