Effect of CO Partial Pressure on Extraction of Alumina from Coal Fly Ash During Carbothermal Reduction Process

2019 ◽  
pp. 89-95
Author(s):  
Yang Xue ◽  
Wenzhou Yu ◽  
Zhixiong You ◽  
Xuewei Lv
Keyword(s):  
Fly Ash ◽  
Partial Pressure ◽  
Carbothermal Reduction ◽  
Coal Fly Ash ◽  
Reduction Process

A Review on Preparation of Non-Oxides Materials from Fly Ash

2012 ◽  
Vol 531 ◽  
pp. 280-283
Author(s):  
Bei Yue Ma ◽  
Bo Li ◽  
Yu Shi Ding ◽  
Chen Yan ◽  
Ying Li ◽  
...  
Keyword(s):  
Fly Ash ◽  
Carbothermal Reduction ◽  
Reduction Process

The latest development on preparation of SiC-AlN, SiC-mullite and β-Sialon materials using fly ash via in-situ carbothermal reduction process was reviewed. The synthesis mechanisms of SiC based materials and β-Sialon were also discussed.

Evolution of ZnO nanowires, nanorods, and nanosheets with an oxygen-assisted carbothermal reduction process

2004 ◽  
Vol 848 ◽  
Author(s):  
Jae-Hwan Park ◽  
Young-Jin Choi ◽  
Jae-Gwan Park
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Carbothermal Reduction ◽  
Reduction Process ◽  
Zno Nanowires ◽  
Carrier Gas ◽  
Si Substrates ◽  
In Series ◽  
Oxygen Gas ◽  
Ar Gas

ABSTRACTA systematic hierarchical evolution of nanowires, nanorods, and nanosheets in ZnO, based on a oxygen-assisted carbothermal reduction process, was presented. Nanowires, nanorods, and nanosheets were synthesized in series with controlling oxygen partial pressure from 10-6 to 10-1. It was impossible to get ZnO nanowires with using Ar gas only and more than 1ppm of oxygen could successfully introduce the ZnO nanowires on the Si substrates at the downstream of the tube. The additional oxygen gas with Ar carrier gas could introduce not only the nanowires but also the combs and sheets. The details of nanocombs and nanosheets also were presented.

Production of metals and oxygen from coal fly ash by aluminothothermic and electrochemical reduction process

2017 ◽  
Vol 718 ◽  
pp. 279-287 ◽  
Author(s):  
Aimin Liu ◽  
Zhongning Shi ◽  
Xianwei Hu ◽  
Blanka Kubikova ◽  
Miroslav Boca ◽  
...  
Keyword(s):  
Fly Ash ◽  
Electrochemical Reduction ◽  
Coal Fly Ash ◽  
Reduction Process

Production of Si-Al-Fe Alloy with Carbothermal Reduction of Coal Fly Ash

2011 ◽  
Vol 291-294 ◽  
pp. 1808-1811 ◽  
Author(s):  
Guo Jun Ma ◽  
Yi Biao Jin ◽  
Da Bin Yang
Keyword(s):  
Fly Ash ◽  
High Temperatures ◽  
Carbothermal Reduction ◽  
Induction Furnace ◽  
Raw Materials ◽  
Coal Fly Ash

In this study, production of Si-Al-Fe alloy with coal fly ash and bauxite as the major raw materials in the induction furnace at high temperatures were studied. The results show that carbothermal reduction of mixture of coal fly ash, bauxite, hematite, silica and CaF2 in the induction furnace can produce Si-Al-Fe alloy, and it can therefore improve the utilization value of fly ash and reduce its pollution to the environment. The reduced alloy phase mainly contains ~23% Si, ~19% Al and ~52% Fe, and small amounts of P and S. The main phases of alloy are Al0.5Fe3Si0.5, FeSi, SiC, Si5C3, FeC, and TiC.

UTILIZATION OF COAL FLY ASH FROM POWER PLANTS - I. ASH CHARACTERIZATION

2008 ◽  
Vol 7 (3) ◽  
pp. 289-293 ◽  
Author(s):  
Maria Harja ◽  
Marinela Barbuta ◽  
Lacramioara Rusu ◽  
Nicolae Apostolescu
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Coal Fly Ash
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