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Materials Science Weekly Newsletter
Recently Published Articles
- Effect of Nepheline Syenite on Iron Losses in Slags during Desulphurization of Hot Metal
Annika Fang Yang, Andrey Karasev and Pär Göran Jönsson
Article first published online: 7 JUL 2015 | DOI: 10.1002/srin.201500154
The effect of injection of nepheline syenite together with CaC2 and C on the iron losses in form of metal droplets in a slag during desulphurization of hot metal is investigated in industrial trials. The characteristics and behavior of different metal droplets in slags of trials without and with injection of a nepheline syenite are investigated.
- Thermal Analysis Study on the Carbothermic Reduction of Chromite Ore with the Addition of Mill Scale
Xianfeng Hu, Qixing Yang, Lena Sundqvist Ökvist and Bo Björkman
Article first published online: 7 JUL 2015 | DOI: 10.1002/srin.201500131
In this paper, the effect of mill scale addition on the reduction of chromite ore is investigated on the samples with three different amounts of mill scale addition (78 wt%, 38 wt%, and 0 for the samples #1b, #2b, and #3b, respectively) by thermogravimetric technique. The fractional reduced samples are characterized by SEM/EDS and XRD analyses. The mechanism of mill scale addition on the reduction of chromite ore is discussed and the industrial implications of the experimental results are also presented.
- Mathematical Modeling of the Energy Consumption and Carbon Emission for the Oxygen Blast Furnace with Top Gas Recycling
Peng Jin, Zeyi Jiang, Cheng Bao, Yuanxiang Lu, Jianliang Zhang and Xinxin Zhang
Article first published online: 7 JUL 2015 | DOI: 10.1002/srin.201500054
A comprehensive model is established to investigate the oxygen blast furnace with top gas recycling (TGR-OBF) process. The low temperature and high reducing environment in TGR-OBF can reduce coke consumption and increase the reduction rate of iron oxide. Compared with the conventional operation, the TGR-OBF (Case 2) decreases the direct CO2 emission by 55.2% and net CO2 emission by 35.7%.
- γ Grain Memory in X12CrMoWVNbN10-1-1 Steel
Xingang Tao, Lizhan Han and Jianfeng Gu
Article first published online: 6 JUL 2015 | DOI: 10.1002/srin.201500132
γ grain memory of X12CrMoWVNbN10-1-1 steel is investigated in order to clarify its mechanism from the viewpoint of the roles of retained γ. “Isothermal transformation” is proposed to suppress the γ grain memory. It is demonstrated that the γ grain memory can be suppressed by decreasing the volume fraction of retained γ before reheating.
- The Impact of Hot Rolling Temperature after Reheating in the New Generation Strip Casting Process on Structure-Property Relationship in Extra-Low Carbon Steel
Hai-Tao Liu, Dong-Jie Chen, Bao-Guang Zhang, Hua-Long Li, Ai-Hua Chen, Lei Li, Guo-Dong Wang and R. Devesh Kumar Misra
Article first published online: 2 JUL 2015 | DOI: 10.1002/srin.201500128
The effects of rolling temperature after reheating on the structure-property relation in strip-cast extra-low carbon steel are investigated in detail. The present study underscores that a good combination of yield strength and elongation that is comparable to conventional hot rolled sheets can be successfully obtained through optimization of hot rolling temperature after reheating in the strip casting process.