Effects of TiO2/SiC/SiO2 coating on graphite electrode consumption in sublimation and oxidation states as determined by EAF simulation and experimental methods

2021 ◽  
pp. 127340
Author(s):  
Hossein Alian Moghadam ◽  
Majid Jabbari ◽  
Saeed Daneshmand ◽  
Saeid Rasouli Jazi ◽  
Arezoo Khosravi
Keyword(s):  
Graphite Electrode ◽  
Experimental Methods ◽  
Oxidation States ◽  
Sio2 Coating ◽  
Electrode Consumption

Influence of Hollow Electrode Ar-CO2 Injection on Carbon Content in Ladle Furnace

2011 ◽  
Vol 250-253 ◽  
pp. 3864-3867
Author(s):  
Dong Ping Zhan ◽  
Hui Shu Zhang ◽  
Zhou Hua Jiang ◽  
Wei Gong ◽  
Hua Bing Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Consumption Rate ◽  
Graphite Electrode ◽  
Low Carbon Steel ◽  
Gas Mixtures ◽  
Ladle Furnace ◽  
Low Carbon ◽  
Carbon Dioxide Content ◽  
Electrode Consumption ◽  
Hollow Electrode

The argon and carbon dioxide co-injection tests were carried out with low carbon steel melts of 100 kg in a multi-function direct current ladle furnace (DC-LF) equipped with a hollow graphite electrode. It is shown that, the electrode consumption rate and the carburetion rate decrease when Ar-CO2gas mixtures are blown into the furnace. The carburetion rate is 3.6×10-6per minute for the steel heated by conventional LF, and is 1.35 and 3.22 times of the heats blown 85%Ar-15%CO2 and 80%Ar-20%CO2, respectively. The carburetion rate is reduced by 25.8% at least than normal LF. The more the carbon dioxide content in the gas mixtures is, the less the carburetion rate and the electrode consumption rate are. With the increasing of the electrode consumption rate, the carburetion rate becomes bigger.

Electrochemical and spectroscopic investigation of neutral, oxidized and reduced double-decker lutetium(III) phthalocyanines

2003 ◽  
Vol 07 (04) ◽  
pp. 227-238 ◽  
Author(s):  
Ismail Yilmaz ◽  
Takashi Nakanishi ◽  
Aysegül Gürek ◽  
Karl M. Kadish
Keyword(s):  
Graphite Electrode ◽  
Pyrolytic Graphite ◽  
Esr Spectra ◽  
Oxidation States ◽  
Experimental Conditions ◽  
Double Decker ◽  
Half Wave ◽  
Visible Spectra ◽  
Uv Visible ◽  
Pyrolytic Graphite Electrode

The double-decker lutetium(III) phthalocyanine [( C 6 H 13 S )8 Pc ]2 Lu was investigated by electrochemical and spectroelectrochemical methods and comparisons made to previously investigated [( C 12 H 25 S )4 Pc ]2 Lu and ( Pc )2 Lu under the some experimental conditions. All three compounds undergo a single reversible one-electron oxidation and up to four reversible one-electron reductions in CH 2 Cl 2 containing 0.1 M tetra-n-butylammonium perchlorate (TBAP). The octa- and tetra substituted phthalocyanine derivatives exhibit one oxidation and three or four reductions in solution while five reductions can be detected for the two compounds in a gel-like cast film membrane of tetraoctylphosphonium bromide (4 C 8 P + Br −) at a basal plane pyrolytic graphite electrode which was immersed in aqueous 0.5 M KCl . The half-wave potentials of these SR substituted complexes in CH 2 Cl 2 are negatively shifted by 210-490 mV from E1/2 values for the same compounds in the aqueous 4 C 8P+ Br − matrix and five reductions of these compounds are observed under the latter experimental conditions. The UV-visible spectra of the compounds were measured in five different oxidation states and ESR spectra were also characterized for the neutral and doubly reduced complexes. As was expected, [( Pc )2 Lu ]−,{[( C 6 H 13 S )8 Pc ]2 Lu }− and {[( C 12 H 25 S )4 Pc ]2 Lu }− are ESR silent while electrogenerated [( Pc )2 Lu ]2−, {[( C 6 H 13 S )8 Pc ]2 Lu }2− and {[( C 12 H 25 S )4 Pc ]2 Lu }2− show broad strong signals at g = 2.0046, 2.0041 and 2.0034 with linewidths of 13.9, 16.1 and 12.9, respectively. These signals are indicative of organic free radicals where the unpaired electrons of the dianion are delocalized over two macrocycles.

MicroEXAFS study into the oxidation states of copper coloured Hispano-Moresque lustre decorations

2003 ◽  
Vol 104 ◽  
pp. 519-522 ◽  
Author(s):  
A. D. Smith ◽  
T. Pradell ◽  
J. Molera ◽  
M. Vendrell ◽  
M. A. Marcus ◽  
...  
Keyword(s):  
Oxidation States

ANALISIS VARIASI JUMLAH SUDU TURBIN BERPENAMPANG PELAT DATAR PADA TURBIN AIR ALIRAN VORTEX DENGAN TIPE SALURAN MASUK INVOLUTE

2020 ◽  
Vol 7 (2) ◽  
pp. 72-78
Author(s):  
Adnan Al Farisi ◽  
Yopi Handoyo ◽  
Taufiqur Rokhman
Keyword(s):  
Power Plant ◽  
Alternative Energy ◽  
Vortex Flow ◽  
Experimental Methods ◽  
Turbine Efficiency ◽  
A Value ◽  
Current Voltage ◽  
Materials Research ◽  
The One ◽  
Flow Vortex

The One of alternative energy that is environmentally friendly is by untilize water energy and turn it into a Microhydro power plant. Microhydro power plant usually made from utilize the waterfall with the head fell. While utilization for streams with a head small drop is not optimal yet. This is a reference to doing research on harnessing the flow of a river that has a value of head low between 0.7 m – 1.4 m with turning it into a Vortex flow (vortex). The purpose of this research is to know  the effect variation number of blade on power and efficiency in the vortex turbine. This research uses experimental methods to find current, voltage, torque and rpm using a reading instrument. The materials research vortex turbine used 6 blade, 8 blade and 10 blade with flat plate. The result showed the highest efficiency is 29,93 % with produce turbine power is 19,58 W, generated on turbine with variation 10 blade with load 3,315 kg and the capacity of water 10,14 l/s. Followed with an efficiency 24,17% and produce turbine power is 15,81 W, generated on turbine with the variation 8 blade with load 3,315 kg and the capacity of water is 10,14 l/s. The the lowest turbine efficiency 22,32% with produce tuebine power 14,60 W, generated on turbine with the variation 6 blade with load 3,315 kg, the capacity of water is 10,14 l/s.

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