Molecular dynamics simulation of the structure and properties for the CaO–SiO2 and CaO–Al2O3 systems

Viscosity Measurement of Slags using Rotating Bob and Vibrating Finger Viscometer

“…The information regarding to the blast furnace slag was taken (selected) from the researches of Han et al, 25) Kim et al, 26,27) Suzuki et al 28) and Tang et al 29) were compared with the results obtained by Oliveira et al, 30) Urbain et al 31) and Wu et al 32,33) The results of present work for the industrial blast furnace slag are in a good agreement with the data reported by Han 25) and Kim. 27) In the work of Kim,27) a Brookfield digital viscometer (rotating cylindrical method) was employed for the viscosity measurements and holding time for reaching equilibrium state was more than 30 minutes at each temperature.…”

“…The experimental data presented in the research performed by Oliveira et al 30) were estimated using Brookfield LVTD viscometer at 1 550°C. Results of the present work for the CaO-Al 2 O 3 system are in a good agreement with the data reported by Oliveira et al 30) Comparison of the experimental data of the present work using two viscosity measurement techniques with the data of Oliveira et al 30) reveals that the obtained results for the vibrating (oscillating) finger viscometer is more compatible with the data reported by Oliveira et al 30) However, there are considerable differences between the experimental results of the present work and the calculated data presented by Wu et al 32,33) Moreover, the obtained viscosity values for CaO-SiO 2 system have been compared with both the rotation cup viscometer results reported by Urbain et al 31) in the temperature range of 1 552 to 1 903°C and with the viscosity data obtained by simulations reported by Wu et al 32,33) Surprisingly, computed results of Wu et al 32,33) depict a better agreement with the present research as compared to the experimentally obtained values of Urbain et al 31) Fig. 5.…”

The effect of CaO(MgO) on the structure and properties of aluminosilicate system by molecular dynamics simulation

“…And there are also a few studies reported by molecular dynamics simulations [11][12][13][14][15] . Wu et al 16 oxygen 17,18 .…”

Review of Mold Fluxes for Continuous Casting of High‐Alloy (Al, Mn, Ti) Steels

“…However, because of the electric charge of Al 3+ , charge compensation of Al 3+ in the tetrahedral coordination is necessary, which can be achieved by either alkali‐ or alkaline‐earth metals by forming [Na(AlO 4 )] 4– or [(1/2Ca)(AlO 4 )] 4– tetrahedra as diagrammed in Figure . Research has revealed that the aluminate network becomes more complex with increasing Al 2 O 3 content, and for a given Al 2 O 3 content in different systems, both the Al‐O structural disorder and the polymerization degree of the network structure increase as the metal cations become more electronegative . In other words, for a given Al 2 O 3 content, the effects of the components on stabilizing the Al‐O network are sequenced as K 2 O > Na 2 O > CaO > MgO, and the polymerization degree of the structure in different systems follows the order K 2 O‐Al 2 O 3 < Na 2 O‐Al 2 O 3 < CaO‐Al 2 O 3 < MgO‐Al 2 O 3 .…”