scholarly journals Investigation of continuous carbothermal reduction of magnesia by magnesium vapor condensation onto a moving bed of solid particles

2020 ◽  
Vol 365 ◽  
pp. 2-11 ◽  
Author(s):  
Boris A. Chubukov ◽  
Scott C. Rowe ◽  
Aaron W. Palumbo ◽  
Mark A. Wallace ◽  
Alan W. Weimer
Keyword(s):  
Carbothermal Reduction ◽  
Vapor Condensation ◽  
Solid Particles ◽  
Magnesium Vapor ◽  
Moving Bed

Effect of Temperature on Magnesium Vapor Condensation in Inert Carrier Gas

2020 ◽  
pp. 313-318
Author(s):  
Jibiao Han ◽  
Ting’an Zhang ◽  
Daxue Fu ◽  
Junhua Guo ◽  
Zonghui Ji ◽  
...  
Keyword(s):  
Vapor Condensation ◽  
Effect Of Temperature ◽  
Magnesium Vapor ◽  
Carrier Gas ◽  
Inert Carrier

scholarly journals On the Development of a Zinc Vapor Condensation Process for the Solar Carbothermal Reduction of Zinc Oxide

JOM ◽  
2015 ◽  
Vol 67 (5) ◽  
pp. 1096-1109 ◽  
Author(s):  
N. Tzouganatos ◽  
M. Dell’amico ◽  
C. Wieckert ◽  
J. Hinkley ◽  
A. Steinfeld
Keyword(s):  
Zinc Oxide ◽  
Carbothermal Reduction ◽  
Vapor Condensation ◽  
Condensation Process ◽  
Zinc Vapor

Cooling of Particulate Solids and Fluid in a Moving Bed Heat Exchanger

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Mustafa Turkyilmazoglu
Keyword(s):  
Heat Sink ◽  
Heat Exchangers ◽  
Solid Particles ◽  
Temperature Fields ◽  
Flowing Fluid ◽  
Moving Bed ◽  
Particulate Solids ◽  
Prime Concern ◽  
Cooling Effects ◽  
Energy Equations

Abstract The current technical brief is to analytically solve the coupled energy equations governing the thermal phenomenon of particulate solids and cooling fluid present inside moving bed heat exchangers constructed via a parallel plate system. The prime concern is to analytically evaluate the cooling effects of a heat sink (absorbent) placed within the media on the particulate and fluid and hence to obtain the relevant temperature fields for the latter. In the absence of such a source term, the solutions collapse onto the recent literature. Results clearly demonstrate how an effective cooling can be achieved with a heat sink mounted on industrial moving bed heat exchangers. Particularly, the existence of an energy sink results in cooler solid particles as compared to the flowing fluid.

Study on Mass Loss of Ludwigite in the Process of Carbothermal Reduction

2012 ◽  
Vol 487 ◽  
pp. 15-19
Author(s):  
Ran Liu ◽  
Xing Juan Wang ◽  
Yong Liang Gao ◽  
Qing Lu ◽  
Xiang Xin Xue
Keyword(s):  
Mass Loss ◽  
Carbon Content ◽  
Carbothermal Reduction ◽  
Loss Rate ◽  
Orthogonal Experiment ◽  
Mass Loss Rate ◽  
Influential Factor ◽  
Raw Material ◽  
Reduction Temperature ◽  
Magnesium Vapor

Using ludwigite as raw material, mass loss of ludwigite on the procedure of carbothermal reduction was studied. The effects of reduction temperature, carbon content, holding time were investigated by orthogonal experiment. Reduction temperature was the most influential factor for affecting the mass loss of ludwigite. The experimental results showed that the mass loss rate of samples increases with rising temperature, of which the maximum is 52.6wt% in the range from 1410°C to 1470°C. Mass loss rate of magnesia in ludwigite went up to 98.0% because it was reduced as gaseous magnesium vapor in the process of carbothermal reduction. The main phase of the reduction product was Fe2B, FeB and SiC. The paper can provide significant references for selective separation of valuable elements form ludwigite.

TEM study of amorphization of Cu and Ti foils by cold-rolling

1990 ◽  
Vol 48 (4) ◽  
pp. 146-147
Author(s):  
W. A. Chiou ◽  
N. L. Jeon ◽  
Genbao Xu ◽  
M. Meshii
Keyword(s):  
Solid State ◽  
Cold Rolling ◽  
High Energy ◽  
Rapid Quenching ◽  
Vapor Condensation ◽  
Metallic Alloys ◽  
Solid State Reactions ◽  
High Energy Particle ◽  
Amorphous Metallic Alloys ◽  
Thin Foils

For many years amorphous metallic alloys have been prepared by rapid quenching techniques such as vapor condensation or melt quenching. Recently, solid-state reactions have shown to be an alternative for synthesizing amorphous metallic alloys. While solid-state amorphization by ball milling and high energy particle irradiation have been investigated extensively, the growth of amorphous phase by cold-rolling has been limited. This paper presents a morphological and structural study of amorphization of Cu and Ti foils by rolling.Samples of high purity Cu (99.999%) and Ti (99.99%) foils with a thickness of 0.025 mm were used as starting materials. These thin foils were cut to 5 cm (w) × 10 cm (1), and the surface was cleaned with acetone. A total of twenty alternatively stacked Cu and Ti foils were then rolled. Composite layers following each rolling pass were cleaned with acetone, cut into half and stacked together, and then rolled again.

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