The continuous casting tundish is the last metallurgical reactor where molten metal flows before solidifying in mold. A covering powder can be used for improving steel cleanliness; this case it named ‘active slag’. objective of work to evaluate, laboratory, effect three kinds powders on cleanliness a SAE 1055 modified - Ca-aluminate, Ca-Mg-aluminate, and an Al-silicate powder, analysing their i...

Article history: Received 18 June 2014 Accepted 7 May 2015 Available online xxxx

Diffusion couples of 3CaO·Al 2 O 3 and Fe–S–O–(Al) alloys are prepared to investigate the transformation calcium aluminate reacting with solid sulfur‐containing alloys. behaviors reaction between alloy phase slag under 1373 K studied. Product layers 12CaO·7Al CaS formed at interface. After heating for 10 h, average thickness layer in samples without Al is 2.10 0.71 μm, respectively, while it in...

Thermal energy storage represents a crucial element to increase solar power dispatchability. Within sensible heat in solid media, concrete is considered low-cost alternative be further developed and therefore, this has been addressed paper. Four dosages were designed, combining each type of cement, ordinary Portland calcium aluminate with aggregate, silico-calcareous steel slag. Thermo-mechanic...

It is now well accepted and demonstrated that calcium silicate, calcium aluminate and calcium sulfo aluminate (ettringite, AFm) phases exhibit a good capability to fix metals and metalloids. Unfortunately the role of minor phases and especially calcium-ferric aluminate phase, shorthand C4AF is not well defined. In other systems like in soils or sediments iron phases play a key role in the fixat...

Abstract Leaching experiments were performed in calcium aluminate slag with a high-sodium carbonate adaptation of the Pedersen process. A theoretical thermodynamic study pregnant leaching solution was conducted to specify thermodynamically favored species that exist within. Using HSC 9.0 software, carbonation process simulation (neutralization CO 2 gas) simulated. Laboratory verify predictions....

1. Ground Granulated Blast Furnace Slag Ground Granulated Blast Furnace Slag (GGBFS) is a by product of the steel industry. Blast furnace slag is defined as “the non-metallic product consisting essentially of calcium silicates and other bases that is developed in a molten condition simultaneously with iron in a blast furnace.” [1] In the production of iron, blast furnaces are loaded with iron o...

effluent from ro (reverse osmosis) systems during recovery gradually becomes concentrated and supersaturated with soluble salts such as calcium carbonate (caco3), calcium sulfate (caso4), barium sulfate (baso4) and silica (sio2). thus we were looking for procedures to prevent precipitation of soluble salts on the membrane surface and decrease membrane permeability. therefore, recovery could be ...