Desiliconization of leucoxene concentrate through the vacuum silicothermic reduction

2020 ◽  
pp. 5-9
Author(s):  
E. I. Istomina ◽  
P. V. Istomin ◽  
A. V. Nadutkin ◽  
V. E. Grass
Keyword(s):  
High Temperature ◽  
Reducing Agent ◽  
New Approach ◽  
Silicon Oxides ◽  
High Temperature Process ◽  
Silicothermic Reduction

A new approach to the processing of leucoxene concentrate through the vacuum silicothermic reduction of titanium and silicon oxides using technical silicon as a reducing agent is presented. It has been shown that the reactions occurring during the high-temperature process are accompanied by the formation of SiO gas resulting in desiliconization of the leucoxene concentrate. The highest desiliconization degree of 82 % was achieved when the content of silicon in the reactant mixture was 29 wt. %.

scholarly journals Exploring the Effect of Silicon on the High Temperature Corrosion of Lean FeCrAl Alloys in Humid Air

2021 ◽  
Author(s):  
T. Sand ◽  
A. Edgren ◽  
C. Geers ◽  
V. Asokan ◽  
J. Eklund ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Oxidation Behavior ◽  
High Temperature Corrosion ◽  
The Other ◽  
Oxide Scales ◽  
Protective Oxide ◽  
New Approach ◽  
Fecral Alloys ◽  
Cr Evaporation

AbstractA new approach to reduce the chromium and aluminium concentrations in FeCrAl alloys without significantly impairing corrosion resistance is to alloy with 1–2 wt.% silicon. This paper investigates the “silicon effect” on oxidation by comparing the oxidation behavior and scale microstructure of two FeCrAl alloys, one alloyed with silicon and the other not, in dry and wet air at 600 °C and 800 °C. Both alloys formed thin protective oxide scales and the Cr-evaporation rates were small. In wet air at 800 °C the Si-alloyed FeCrAl formed an oxide scale containing mullite and tridymite together with α- and γ-alumina. It is suggested that the reported improvement of the corrosion resistance of Al- and Cr-lean FeCrAl’s by silicon alloying is caused by the appearance of Si-rich phases in the scale.

Review on Relationships of Temperature History, Fatigue Damage and Microstructure Evolution Mechanism of Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 944-950 ◽  
Author(s):  
Dong Fu Zhao ◽  
Mei Liu ◽  
Shi Ji Zhang
Keyword(s):  
High Temperature ◽  
Fatigue Damage ◽  
Microstructure Evolution ◽  
Research Direction ◽  
Concrete Research ◽  
Temperature History ◽  
Evolution Mechanism ◽  
Main Research ◽  
High Temperature Process ◽  
Application Prospects

The domestic and overseas research progresses of microstructure of the concrete and fatigue damage after treated by high temperature are reviewed. The main research direction and current shortage on the high temperature process, fatigue damage and the microstructure evolution mechanism of concrete are discussed. A view of the application prospects of concrete research on the high temperature process, fatigue damage and the microstructure evolution mechanism of concrete is forecast.

An application of high-temperature superconductors YBCO to magnetic separation

2017 ◽  
Vol 31 (25) ◽  
pp. 1745001 ◽  
Author(s):  
Qiudong Guo ◽  
Peng Zhang ◽  
Lin Bo ◽  
Guibin Zeng ◽  
Dengqian Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Magnetic Separation ◽  
High Magnetic Field ◽  
Low Cost ◽  
Rapid Development ◽  
High Temperature Superconductors ◽  
New Approach ◽  
Industrial Areas ◽  
Ybco Tape

With the rapid development of manufacturing technology of high temperature superconductive YB[Formula: see text]Cu3O[Formula: see text] YBCO materials and decreasing in cost of production, YBCO is marching into industrial areas with its good performances as source of high-magnetic field and rather low cost in reaching superconductivity. Based on analysis of the performance of high temperature superconductors YBCO and development of technology in superconductive magnetic separation both home and abroad, we propose a new approach of taking YBCO tape to make a solenoid as the source of a high magnetic field of magnetic separatior of ores. The paper also looks into the future of the YBCO high temperature superconductive magnetic separation from the perspective of technology and cost, as well as its applications in other industries.

Proposal for a Regenerative High-Temperature Process for Coal Gas Cleanup with Calcined Limestone

1996 ◽  
Vol 35 (5) ◽  
pp. 1487-1495 ◽  
Author(s):  
A. G. J. van der Ham ◽  
A. B. M. Heesink ◽  
W. Prins ◽  
W. P. M. van Swaaij
Keyword(s):  
High Temperature ◽  
Coal Gas ◽  
High Temperature Process

scholarly journals Solar Cogeneration of Electricity with High-Temperature Process Heat

2020 ◽  
Vol 1 (8) ◽  
pp. 100135 ◽  
Author(s):  
Daniel S. Codd ◽  
Matthew D. Escarra ◽  
Brian Riggs ◽  
Kazi Islam ◽  
Yaping Vera Ji ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Process ◽  
Process Heat
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