Possibility of Reducing the Thermal Conductivity of Ceramic Refractory Materials
The research work covers a study of the possibility of producing porous ceramic bodies as a thermal insulators by adding fired Dechla kaolinite (grog)to the same non burned kaolinite. Different weight percentage ranged between (0,15,25,35and40)from grog and sawdust passed through mesh 50 to Deuc...
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| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2017-05-01
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| Series: | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| Subjects: | |
| Online Access: | https://jih.uobaghdad.edu.iq/index.php/j/article/view/586 |
| Summary: | The research work covers a study of the possibility of producing porous ceramic bodies
as a thermal insulators by adding fired Dechla kaolinite (grog)to the same non burned
kaolinite.
Different weight percentage ranged between (0,15,25,35and40)from grog and sawdust
passed through mesh 50 to Deuchla-clay kaolinit.Cylindrical shape samples (30mm diameter
and 30mm height) were prepared by the semi-dry methed,moulding pressure was 50 N/mm
2
.
After drying at 110
o
c,the samples were burnet in the furnace at temperatures
900,950,1000,1050,and 1100
o
c. The sawdust burnt out and leaves air spaces which contribute
to the high thermal insulation value.
The fired samples were investigated to determine bulk density , porosity, compressive
strength and the thermal conductivity .It was found that the increase of grog ratio produces a
decrease in bulk density ,compressive strength and thermal conductivity, but addition of
sawdust to the samples produces decrease greater than when addition the grog
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| ISSN: | 1609-4042 2521-3407 |