Heat and Mass Transfer in Porous Particle in Thermal Plasma Flow

The paper presents research into heat and mass transfer in agglomerated particles exposed to the thermal plasma flow. The dynamic motion, heating and melting are considered for agglomerated particles. It is shown that the surface temperature of porous particles rather rapidly reaches the value of Ts...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2020-04, Vol.839, p.178-183
Main Authors: Shekhovtsov, Valentin, Volokitin, Gennady, Skripnikova, Nelly, Volokitin, Oleg
Format: Article
Language:English
Subjects:
Diffraction patterns
Heat transfer
Low conductivity
Mass transfer
Plasma
Silicon dioxide
Temperature gradients
Thermal plasmas
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The paper presents research into heat and mass transfer in agglomerated particles exposed to the thermal plasma flow. The dynamic motion, heating and melting are considered for agglomerated particles. It is shown that the surface temperature of porous particles rather rapidly reaches the value of Tsur>Tmelt starting from the area of their introduction into the plasma flow. This effect is determined by the low conductivity of porous particles and indicates to a great temperature difference between the particle surface and its nucleus. It is shown that hollow particles can be obtained from silica sand treated by thermal plasma at 6700 K and 515 m/s velocity. The particle surface displays no clear defects. According to the analysis of X-ray diffraction patterns, the obtained hollow particles have no diffraction peaks.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.839.178