Study on the Improvements of Reduction Swellability and Low Temperature Reduction Disintegration of Vanadium-Titanium Magnetite Oxidized Pellets

2013 ◽  
pp. 509-516 ◽  
Author(s):  
Yufeng Guo ◽  
Jianfeng Zhou ◽  
Tao Jiang ◽  
Feng Chen ◽  
Xiaolei Song ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Reduction ◽  
Oxidized Pellets ◽  
Vanadium Titanium ◽  
Titanium Magnetite ◽  
Low Temperature Reduction

scholarly journals Experimental Study on Oxygen-Enriched Sintering of Vanadium-Titanium Magnetite

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Hao Liu ◽  
Yuelin Qin ◽  
Xinlong Wu ◽  
Bing Xie
Keyword(s):  
Low Temperature ◽  
Ignition Temperature ◽  
Oxygen Enrichment ◽  
Sintering Process ◽  
Temperature Reduction ◽  
Utilization Coefficient ◽  
Coefficient Increase ◽  
Vanadium Titanium ◽  
Titanium Magnetite ◽  
Low Temperature Reduction

The influences of various factors, such as oxygen enrichment time, oxygen enrichment load, and ignition temperature, on the technical indices and sintering performance in the vanadium-titanium magnetite sintering process are simulated using sinter pot experiments. The experiments are based on the field production parameters of a sintering trolley in a steel enterprise in southwest China. Prolonged oxygen enrichment time results in the gradual increase in vertical sintering speed, sintering utilization coefficient, sintered ore yield, sintered ore drum strength, and reductivity. However, the low-temperature reduction pulverability of the sintered ore deteriorates. Oxygen enrichment load increases from 0 m3/h to 2.9 m3/h, and yield increases by 1.1%, while the vertical sintering speed and utilization coefficient increase slightly. Sintered ore drum strength increases from 65.33% to 68.00%, antiwear index decreases to 0.47%, and low-temperature reduction pulverability decreases from 65.07% to 62.85%. The increased ignition temperature is beneficial to improve the drum strength and yield of the ore but reduces the vertical sintering speed and utilization coefficient. With the increase in ignition temperature, the low-temperature reduction pulverability tends to increase first and then decrease. Changes in oxygen time, oxygen enrichment load, and ignition temperature have no significant effects on the soft melting performance of the sintered ore.

Ultralow-temperature synthesis of small Ag-doped carbon nitride for nitrogen photofixation

2020 ◽  
Vol 10 (22) ◽  
pp. 7652-7660
Author(s):  
Yingzhi Wang ◽  
Rui Zhao ◽  
Fan Wang ◽  
Yong Liu ◽  
Xiaohu Yu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Carbon Nitride ◽  
Deposition Method ◽  
Temperature Synthesis ◽  
Temperature Reduction ◽  
Ultralow Temperature ◽  
Low Temperature Reduction

A low-temperature-reduction–deposition method is used to prepare homogeneously dispersed Ag0/g-C3N4 for efficient N2 photofixation.

Low-Temperature Reduction of Magnetite Ore

1936 ◽  
Vol 28 (1) ◽  
pp. 130-133 ◽  
Author(s):  
G. C. Williams ◽  
R. A. Ragatz
Keyword(s):  
Low Temperature ◽  
Magnetite Ore ◽  
Temperature Reduction ◽  
Low Temperature Reduction

Facile Preparation of Ni2 P with a Sulfur-Containing Surface Layer by Low-Temperature Reduction of Ni2 P2 S6

2016 ◽  
Vol 128 (12) ◽  
pp. 4098-4102 ◽  
Author(s):  
Song Tian ◽  
Xiang Li ◽  
Anjie Wang ◽  
Roel Prins ◽  
Yongying Chen ◽  
...  
Keyword(s):  
Surface Layer ◽  
Low Temperature ◽  
Temperature Reduction ◽  
Facile Preparation ◽  
Sulfur Containing ◽  
Low Temperature Reduction

Manganese oxide nanostructures: low-temperature selective synthesis and thermal conversion

RSC Advances ◽  
2015 ◽  
Vol 5 (32) ◽  
pp. 25250-25257 ◽  
Author(s):  
Leilei Lan ◽  
Guangrui Gu ◽  
Quanjun Li ◽  
Huafang Zhang ◽  
Ke Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Thermal Conversion ◽  
High Yield ◽  
Selective Synthesis ◽  
Temperature Reduction ◽  
Oxide Nanostructures ◽  
Low Temperature Reduction

γ-MnOOH nanorods, δ-MnO2 nanosheets, α-Mn2O3 nanocubes, and Mn3O4 nanoparticles were selectively prepared via a facile, high-yield and low-temperature reduction route.

scholarly journals Mineralogical Study on Degradation of Sinter Structure at Low Temperature Reduction

1984 ◽  
Vol 70 (6) ◽  
pp. 512-519 ◽  
Author(s):  
Noboru SAKAMOTO ◽  
Hiroshi FUKUYO ◽  
Yoshihito IWATA ◽  
Tsuneo MIYASHITA
Keyword(s):  
Low Temperature ◽  
Temperature Reduction ◽  
Mineralogical Study ◽  
Low Temperature Reduction

One-Step Low-Temperature Reduction of Sulfur Dioxide to Elemental Sulfur by Plasma-Enhanced Catalysis

ACS Catalysis ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 5272-5277 ◽  
Author(s):  
Mohammad S. AlQahtani ◽  
Sean D. Knecht ◽  
Xiaoxing Wang ◽  
Sven G. Bilén ◽  
Chunshan Song
Keyword(s):  
Sulfur Dioxide ◽  
Low Temperature ◽  
Elemental Sulfur ◽  
Temperature Reduction ◽  
One Step ◽  
Low Temperature Reduction

scholarly journals Application of Potassium Ion Deposition in Determining the Impact of Support Reducibility on Catalytic Activity of Au/Ceria-Zirconia Catalysts in CO Oxidation, NO Oxidation, and C3H8 Combustion

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 688
Author(s):  
Ewa M. Iwanek (nee Wilczkowska) ◽  
Leonarda F. Liotta ◽  
Shazam Williams ◽  
Linjie Hu ◽  
Krishelle Calilung ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Gold Catalysts ◽  
Maximum Temperature ◽  
Potassium Ions ◽  
Reduction Peak ◽  
Temperature Reduction ◽  
Potassium Loading ◽  
The Impact ◽  
Low Temperature Reduction

The purpose of the study was to show how a controlled, subtle change of the reducibility of the support by deposition of potassium ions impacts the activity of gold catalysts. Since the activity of supported gold catalysts in carbon monoxide oxidation is known to strongly depend on the reducibility of the support, this reaction was chosen as the model reaction. The results of tests conducted in a simple system in which the only reagents were CO and O2 showed good agreement with the CO activity trend in tests performed in a complex stream of reagents, which also contained CH4, C2H6, C3H8, NO, and water vapor. The results of the X-ray Diffraction (XRD) studies revealed that the support has the composition Ce0.85Zr0.15O2, that its lattice constant is the same for all samples, and that gold is mostly present in the metallic phase. The reducibility of the systems was established based on Temperature Programmed Reduction (TPR) and in situ XRD measurements in H2 atmosphere. The results show that the low temperature reduction peak, which is due to the presence of gold, is shifted to a higher value by the presence of 0.3 at% potassium ions on the surface. Moreover, the increase of the potassium loading leads to a more pronounced shift. The T50 of CO oxidation in the simple model stream was found to exhibit an excellent linear correlation with the maximum temperature of the low temperature reduction peak of Au catalysts. This means that stabilizing oxygen with a known amount of potassium ions can be numerically used to estimate the T50 in CO oxidation. The results in the complex stream also showed a similar dependence of CO conversion on reducibility, though there was no substantial difference in the activity of the catalysts in other reactions regardless of the potassium loading. These studies have shown that the influence of potassium varies depending on the reaction, which highlights differences in the impact of reducibility and importance of other factors in these reactions.

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