Effect of annealing temperature on morphology and physicochemical properties of cornstarch complexed with oleic acid and molecular dynamics simulation

2019 ◽  
Vol 96 (4) ◽  
pp. 668-677 ◽  
Author(s):  
Xing Zhang ◽  
Yu‐Sheng Wang ◽  
Hai‐Hua Chen
Keyword(s):  
Molecular Dynamics ◽  
Oleic Acid ◽  
Molecular Dynamics Simulation ◽  
Physicochemical Properties ◽  
Annealing Temperature ◽  
Dynamics Simulation

scholarly journals Molecular Dynamics Simulation on Microstructure and Physicochemical Properties of FexO-SiO2-CaO-MgO-“NiO” Slag in Nickel Matte Smelting under Modulating CaO Content

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 149
Author(s):  
Guohua Wang ◽  
Yaru Cui ◽  
Xiaoming Li ◽  
Shufeng Yang ◽  
Junxue Zhao ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Physicochemical Properties ◽  
Nickel Sulfide ◽  
Dynamics Simulation ◽  
Iron Extraction ◽  
Nickel Smelting ◽  
Matte Smelting ◽  
Nickel Sulfide Concentrate ◽  
Sulfide Concentrate

To improve the conditions of extracting iron from nickel smelting residues, the composition modulating from FexO-SiO2-CaO-MgO-“NiO” slag source for matte smelting using high MgO nickel sulfide concentrate was carried out. Based on the molecular dynamics simulation and experimental characterization, the effect of CaO content in nickel slags on the physicochemical properties, the microstructure evolution, and the feasibility of subsequent iron extraction were analyzed. The results showed that, for nickel smelting slag with 9 wt.% MgO, 13–15 wt.% CaO and Fe/SiO2 ratio of 1.2, the melting temperature of nickel slag was lower than 1200 °C, and the viscosity was lower than 0.22 Pa·s at 1350 °C. The electric conductivity was similar to that of the industrial slag, and the interfacial tension between slag and matte was relatively large, which ensured a good separating characteristic. It not only met the requirements for the slag performances in the existing flash smelting process but also improved conditions for the subsequent iron extraction. Additionally, it could be adapted to the current situation where an increasing MgO content exists in the nickel sulfide concentrate.

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