Generation of Ultra-Clean Coal from Victorian Brown Coal: Effect of Hydrothermal Treatment and Particle Size on Coal Demineralization and the Extraction Kinetic of Individual Metals

2012 ◽  
Vol 26 (8) ◽  
pp. 5028-5035 ◽  
Author(s):  
Niken Wijaya ◽  
Teck Kwang Choo ◽  
Lian Zhang
Keyword(s):  
Particle Size ◽  
Hydrothermal Treatment ◽  
Brown Coal ◽  
Clean Coal ◽  
Extraction Kinetic

scholarly journals Preparation of Highly Concentrated Coal-Solvent Slurry by Hydrothermal Treatment and Oil Agglomeration as a Pretreatment for Brown Coal Liquefaction

2014 ◽  
Vol 93 (11) ◽  
pp. 1213-1219
Author(s):  
Toshinori INOUE ◽  
Osamu OKUMA ◽  
Kaoru MASUDA ◽  
Motoharu YASUMURO ◽  
Kouichi MIURA
Keyword(s):  
Hydrothermal Treatment ◽  
Brown Coal ◽  
Coal Liquefaction ◽  
Oil Agglomeration

Effect of Moisture Content on Fluidization of Wet Brown Coal Particle with Wide Particle Size Distribution

2014 ◽  
Vol 40 (4) ◽  
pp. 299-305 ◽  
Author(s):  
Kenichi Arima ◽  
Isao Torii ◽  
Ryuhei Takashima ◽  
Tetsuya Sawatsubashi ◽  
Masaaki Kinoshita ◽  
...  
Keyword(s):  
Particle Size ◽  
Moisture Content ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Brown Coal ◽  
Coal Particle ◽  
Wide Particle Size Distribution ◽  
Effect Of Moisture

Effect of particle size on the MILD combustion characteristics of pulverised brown coal

2017 ◽  
Vol 155 ◽  
pp. 74-87 ◽  
Author(s):  
Manabendra Saha ◽  
Bassam B. Dally ◽  
Paul R. Medwell ◽  
Alfonso Chinnici
Keyword(s):  
Particle Size ◽  
Brown Coal ◽  
Combustion Characteristics ◽  
Mild Combustion ◽  
Effect Of Particle Size

Microwaves and layered double hydroxides: A smooth understanding

2009 ◽  
Vol 81 (8) ◽  
pp. 1459-1471 ◽  
Author(s):  
Patricia Benito ◽  
Francisco M. Labajos ◽  
Vicente Rives
Keyword(s):  
Particle Size ◽  
Thermal Properties ◽  
Particle Size Distribution ◽  
Hydrothermal Treatment ◽  
Layered Double Hydroxides ◽  
Urea Hydrolysis ◽  
Microwave Hydrothermal ◽  
Noticeable Reduction ◽  
Time Required ◽  
Double Hydroxides

Microwave-hydrothermal treatment (MWHT), a modification of conventional hydrothermal treatment, has been used during post-treatment of different layered double hydroxides (LDHs). In some cases, microwaves (MWs) have been used simultaneously with urea hydrolysis or for reconstruction of the LDH structure. The main advantages of replacing the conventional furnaces by MW ovens are a noticeable reduction in the time required to complete the process to obtain well-crystallized materials, and modification of their particle size distribution and textural and thermal properties. MW radiation leads to an increase in the rate of urea hydrolysis and consequently to fast precipitation of LDHs. Finally, the memory effect of Ni,Al-based LDHs is also improved.

Hydrothermal Treatment of Brown Coal To Improve the Space Time Yield of a Direct Liquefaction Reactor

2012 ◽  
Vol 26 (4) ◽  
pp. 2198-2203 ◽  
Author(s):  
Toshinori Inoue ◽  
Osamu Okuma ◽  
Kaoru Masuda ◽  
Motoharu Yasumuro ◽  
Kouichi Miura
Keyword(s):  
Hydrothermal Treatment ◽  
Brown Coal ◽  
Space Time ◽  
Space Time Yield ◽  
Direct Liquefaction

scholarly journals STUDY ON INFLUENCE OF TEMPERATURE AND DURATION OF HYDROTHERMAL TREATMENT TO PROPERTIES OF NANO FERRITE NiFe2O4 MATERIALS

2018 ◽  
Vol 54 (1A) ◽  
pp. 1 ◽  
Author(s):  
Tran Quang Dat
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Hydrothermal Treatment ◽  
Superparamagnetic Nanoparticles ◽  
Degree Of Crystallinity ◽  
Face Centered Cubic ◽  
Influence Of Temperature ◽  
Face Centered ◽  
Co Precipitation ◽  
Increasing Temperature

NiFe2O4 superparamagnetic nanoparticles have been prepared by the method of spraying - co-precipitation subsequent by hydrothermal treatment. This procedure allowed to produce efficiently nanoparticles with high performances. Different techniques such as XRD, TEM, EDX, VSM were used to investigate the morphology, structure and magnetic properties of the obtained materials. It is shown that the materials have face-centered cubic trevorite structure, and their degree of crystallinity and magnetic properties improved with increasing temperature and time of hydrothermal treatment. After 32 hours of hydrothermal treatment at 160°C, NiFe2O4 nanomaterial has particle size of about 23 nm and saturation magnetization (Ms) of 49 emu/g.

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