Recovery of iron and calcium aluminate slag from high-ferrous bauxite by high-temperature reduction and smelting process

2016 ◽  
Vol 23 (8) ◽  
pp. 881-890 ◽  
Author(s):  
Ying-yi Zhang ◽  
Wei Lü ◽  
Yuan-hong Qi ◽  
Zong-shu Zou
Keyword(s):  
High Temperature ◽  
Calcium Aluminate ◽  
Smelting Process ◽  
Temperature Reduction ◽  
Iron And Calcium

High temperature properties of MDF composite based on calcium aluminate cement and polyvinyl alcohol

2013 ◽  
Vol 115 (2) ◽  
pp. 1245-1252 ◽  
Author(s):  
František Šoukal ◽  
Petr Ptáček ◽  
Jiří Másilko ◽  
Tomáš Opravil ◽  
Jaromír Havlica ◽  
...  
Keyword(s):  
High Temperature ◽  
Polyvinyl Alcohol ◽  
Calcium Aluminate ◽  
Calcium Aluminate Cement ◽  
High Temperature Properties ◽  
Aluminate Cement

Deformation Behavior and Constitutive Equation of 42CrMo Steel at High Temperature

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1614
Author(s):  
Hongqiang Liu ◽  
Zhicheng Cheng ◽  
Wei Yu ◽  
Gaotian Wang ◽  
Jie Zhou ◽  
...  
Keyword(s):  
High Temperature ◽  
Flow Stress ◽  
Strain Rate ◽  
Thermal Processing ◽  
Deformation Behavior ◽  
Reduction Process ◽  
Ann Model ◽  
Forming Process ◽  
Temperature Reduction ◽  
42Crmo Steel

High-temperature reduction pretreatment (HTRP) is a process that can significantly improve the core quality of a billet. The existing flow stress data cannot meet the needs of simulation due to lack of high temperature data. To obtain the hot forming process parameters for the high-temperature reduction pretreatment process of 42CrMo steel, a hot compression experiment of 42CrMo steel was conducted on Gleeble-3500 thermal-mechanical at 1200–1350 °C with the rates of deformation 0.001–10 s−1 and the deformation of 60%, and its deformation behavior at elevated temperature was studied. In this study, the effects of flow stress temperature and strain rate on austenite grain were investigated. Moreover, two typical constitutive models were employed to describe the flow stress, namely the Arrhenius constitutive model of strain compensation and back propagation artificial neural network (BP ANN) model. The performance evaluation shows that BP ANN model has high accuracy and stability to predict the curve. The thermal processing maps under strains of 0.1, 0.2, 0.3, and 0.4 were established. Based on the analysis of the thermal processing map, the optimal high reduction process parameter range of 42CrMo is obtained: the temperature range is 1250–1350 °C, and the strain rate range is 0.01–1 s−1.

Size-Controlled Synthesis of Gold Nanoparticles via High-Temperature Reduction

Langmuir ◽  
2004 ◽  
Vol 20 (8) ◽  
pp. 3021-3023 ◽  
Author(s):  
David A. Fleming ◽  
Mary Elizabeth Williams
Keyword(s):  
Gold Nanoparticles ◽  
High Temperature ◽  
Controlled Synthesis ◽  
Temperature Reduction ◽  
Size Controlled

High‐Temperature Reduction of Calcium Alginate to Carbon Sphere for Efficient Removal of Bivalent Cadmium

2019 ◽  
Vol 4 (31) ◽  
pp. 9058-9064 ◽  
Author(s):  
Yalin Cheng ◽  
Kaiqian Wang ◽  
Biyang Tu ◽  
Yang Xia ◽  
Jiaqian Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Calcium Alginate ◽  
Carbon Sphere ◽  
Efficient Removal ◽  
Temperature Reduction

scholarly journals Review and data evaluation for high-temperature reduction of iron oxide particles in suspension

2019 ◽  
Vol 47 (7) ◽  
pp. 741-747 ◽  
Author(s):  
Zhiyuan Chen ◽  
Christiaan Zeilstra ◽  
Jan van der Stel ◽  
Jilt Sietsma ◽  
Yongxiang Yang
Keyword(s):  
High Temperature ◽  
Iron Oxide ◽  
Data Evaluation ◽  
Iron Oxide Particles ◽  
Temperature Reduction ◽  
Reduction Of Iron ◽  
Oxide Particles

Research on Preparation of Ti(C,N) by the Carbon and Nitrogen Treatment of the Deep Reduced Slag

2013 ◽  
Vol 295-298 ◽  
pp. 1463-1471
Author(s):  
Liang Li ◽  
Jun Wang ◽  
Xing Ping Fan
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Smelting Process ◽  
Nitrogen Gas ◽  
Carbon And Nitrogen ◽  
Nitrogen Treatment ◽  
Average Size ◽  
Theoretical Amount

The carbonitriding treatment of deep reduced slag obtained in the smelting process of the non blast furnace with the vanadic titanomagnetite from PanZhiHua were carried out in a high temperature carbolic pipe furnace with nitrogen gas in order to obtain Ti(C,N). The results are found: there are a few of Ti (C, N) presented in the carbonitriding reaction production with theoretical amount of carbon at 1400°C; the content of Ti (C, N) increases with temperature; the carbonitriding reaction tends to finish at 1500°C; the average size of Ti(C,N) particles are 7.8452μm and the maximum is 21μm above 1600°C; the content of N in the Ti (C, N) decrease with temperature below 1400°C and that of N increase and the change of C content is opposite above 1400°C; To increase appropriately carbon amount can promoto the carbonitride reaction which is benefit for the formation and grow of the Ti (C, N); when the amount of carbon beyond the theoretical value, the maximum and average size of grains obtained is smaller. It shows that the bigger Ti(C,N) grains can be obtained and the high temperature is very important for the carbonitride treatment of the deep reduced slag to obtain Ti (C, N).

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