Viscosity of CaO–MgO–Al2O3–SiO2 melts containing SiC particles

Han, Pengcheng; Zheng, Wen-Chen; Zhang, Guohua; Chu, Sheng

doi:10.1080/03019233.2017.1405175

Cited by 4 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even if the coke degradation doesn't occur, then oxides that have high melting points, such as 2CaO•SiO 2 , are thermodynamically liberated and become suspended in the molten slag. 7,8) Consequently, the powder suspended in the slag phase transitions from being a Newtonian fluid, in which viscosity is proportional to shear stress and flow shear rate, and becomes a non-Newtonian fluid called a "Bingham plastic fluid" with a concomitant increase in the solid phase ratio. 9,10) Although the interaction between the melt and powder should not be ignored, few reports focus on the complicated dynamics of packed-bed behavior in detail.…”

Section: Numerical Simulation Of Coexisting Solid-liquid Slag Trickle Flow In a Coke Bed By The Sph Methods With A Non-newtonian Fluid Momentioning

confidence: 99%

Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model

et al. 2020

View full text Add to dashboard Cite

A simulation of the dripping behavior of solid-phase suspended molten slag in a coke bed was performed using the Bingham fluid model in the framework of smoothed particle hydrodynamics (SPH). SPH can track the motion of droplets which are suspended in dispersed solids. A case study was performed in which the yield coefficient varied with the viscosity coefficient of the molten SiO 2 -CaO-Al 2 O 3 slag, with suspended solids approximated by the Bingham fluid model, and the holdup droplets were trapped at approximately the same site regardless of the yield value. When the yield value exceeded the threshold, the volume of each holdup droplet increased. This threshold is correlated with the decrease in the shear rate at the bottleneck. Increasing the solid phase ratio in the molten slag is also predicted to increase the yield value with viscosity; thus, the amount of holdup droplets increases at the specific holdup sites as a dispersed phase. This indicates that the increase in the yield value approaches the powder holdup mechanism that is closed one after another starting from a specific holdup site.

show abstract

Section: Numerical Simulation Of Coexisting Solid-liquid Slag Trickle Flow In a Coke Bed By The Sph Methods With A Non-newtonian Fluid Momentioning

confidence: 99%

Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model

et al. 2020

View full text Add to dashboard Cite

show abstract

“…28) Yu 29) also found that carbon could react with CaO-SiO 2 -CaF 2 slag at high temperatures to produce SiC, and the addition of SiC would affect the viscosity of slag. 30,31) In consequence, the results of performance tests obtained from carbon-removed slag will deviate from the actual one. Secondly, an essential premise for carbonaceous materials to control the sintering and melting behavior of mold flux is that carbon can be evenly distributed among other mineral raw materials.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Understanding of the Role of Carbon Black in the Sintering and Melting Behavior of Mold Flux

et al. 2022

View full text Add to dashboard Cite

Carbon materials play an important role in controlling the sintering and melting behaviors of mold flux. However, the reactions between carbon and mold fluxes and corresponding effects on the properties of mold fluxes are ignored in previous studies. The effects of carbon black on the sintering and melting behavior of mold flux during the heating process were systematically investigated by TG-FTIR, DSC, XRD, TEM, SEM, XPS, Raman spectroscopy, and viscosity measurement. The results showed that: carbon black between the mineral particles was visualized by TEM, and Ca 4 Si 2 O 7 F 2 as sintering phase was not formed until 1 300°C in CaO-SiO 2 -CaF 2 -Na 2 O slag on account of the insulation of carbon black. Residual carbon black absorbed on the surface of slag droplets suppressed the melting by preventing the aggregation of droplets. Besides, SiC as production of the carbon-slag reaction significantly increased the slag viscosity by improving the polymerization degree of molten slag.

show abstract

Electrical Conductivity of CaO–Al2O3–SiO2 Slags Containing SiC Particles

Hou,

Zhang,

2023

J. Sustain. Metall.

View full text Add to dashboard Cite

Viscosity of CaO–MgO–Al₂O₃–SiO₂ melts containing SiC particles

Cited by 4 publications

References 17 publications

Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model

Numerical Simulation of Coexisting Solid-liquid Slag Trickle Flow in a Coke Bed by the SPH Method with a Non-Newtonian Fluid Model

Comprehensive Understanding of the Role of Carbon Black in the Sintering and Melting Behavior of Mold Flux

Electrical Conductivity of CaO–Al2O3–SiO2 Slags Containing SiC Particles

Contact Info

Product

Resources

About