scholarly journals Ultrafast Iron-Making Method: Carbon Combustion Synthesis from Carbon-Infiltrated Goethite Ore

ACS Omega ◽  
2018 ◽  
Vol 3 (6) ◽  
pp. 6151-6157 ◽  
Author(s):  
Keisuke Abe ◽  
Ade Kurniawan ◽  
Kouichi Ohashi ◽  
Takahiro Nomura ◽  
Tomohiro Akiyama
2012 ◽  
Vol 111 (9) ◽  
pp. 094311 ◽  
Author(s):  
Karen S. Martirosyan ◽  
Chamath Dannangoda ◽  
Eduard Galstyan ◽  
Dmitri Litvinov

AIChE Journal ◽  
2005 ◽  
Vol 51 (10) ◽  
pp. 2801-2810 ◽  
Author(s):  
K. S. Martirosyan ◽  
D. Luss

2007 ◽  
Vol 43 (6) ◽  
pp. 3118-3120 ◽  
Author(s):  
Karen S. Martirosyan ◽  
Long Chang ◽  
James Rantschler ◽  
Sakhrat Khizroev ◽  
Dan Luss ◽  
...  

2016 ◽  
Vol 18 (3) ◽  
pp. 223 ◽  
Author(s):  
A.A. Markov ◽  
M.A. Hobosyan ◽  
K.S. Martirosyan

Carbon Combustion Synthesis of Oxides (CCSO) is a promising method to produce submicron- and nano- sized complex oxides. The CCSO was successfully utilized for producing several complex oxides, a complete theoretical model including the sample porosity, flow parameters and reaction energetics is needed to predict the combustion parameters for CCSO. In this work, we studied the ignition temperature and combustion wave axial temperature distribution, activation energy, combustion heat and thermal losses for a typical CCSO synthesis for cylindrical samples of Ni-Zn ferrites with high (>85%) porosity. We developed a two level combustion model of chemically active nano-dispersed mixture, using the experimentally measured ignition temperature and combustion parameter values utilizing the slipjump method for high Knudsen numbers. The theoretical predictions of highly porous samples when the fl ow resistivity is small and the gas can easily fl ow through the cylindrical sample are in good agreement with the experimental data. The calculation of combustion characteristics for the lower porosity values demonstrated that the surface combustion was dominated due to high gas fl ow resistivity of the sample. Finger combustion features were observed at this combustion mode.


2010 ◽  
Vol 63 ◽  
pp. 236-245 ◽  
Author(s):  
Karen S. Martirosyan

The rapidly growing market demand for nanoparticles calls for cost-effective and environmentally friendly technologies for their large-scale production. We developed a new, simple, economical and energy efficient synthesis of nanostructured complex oxides from inexpensive reactant mixtures, referred to as Carbon Combustion Synthesis of Oxides (CCSO). In CCSO the exothermic oxidation of carbon nanoparticles generates a steep thermal reaction wave that propagates through the solid reactant mixture converting it to the desired complex oxide product. CCSO is a modified form of SHS that maintains the advantages of SHS and circumvents some of its disadvantages. Specifically, it enables a more economical synthesis of complex oxides. The carbon used in CCSO is not incorporated in the product and is emitted from the sample as a CO2. A large gas emission provides a convective cooling mechanism trough the sample that significant reduces local temperature and prevents product partial melting and particles growth. CCSO does not require use of expensive fuel reactants and complex equipment and can be scaled up for continuous mass production. This paper reviewed the recent progress in the synthesis of advanced complex oxides nanoparticles by using carbon combustion process.


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