| Studies on the Development of Sintered Zircon
from Indian Zircon Sand |
A. K. KULKARNI, P. Y. DALVI AND S. V. K. RAo
Pages : 10-17
DOI : 10.1080/0371750X.1980.10840715 |
| Abstract |
| Sintered zircon grog finds application in the manufacture
of high quality zircon refractories used in iron and steel
industries. The quality of these refractories largely depends
upon the quality of zircon grog used.
Attempts were made to develop high quality grog from
the indigenous raw materials such as zircon sand and
ground zircon powder of various grades. The sintering behaviour
of these powders along with additives such as clay,
dolomite and CaO-MgO mixtures has been studied with a
view to incorporate the additives to a minimum extent to
the zircon sand, which is a major constituent and a relatively
cheap raw material used for making sintered zircon grog.
The properties of the grog aimed at comprise: water absorption
<4%, open porosity <15% and Zr02 content >61 %.
Properties such as open porosity, bulk density and water
absorption attained in the sintered grog have been studied
over a temperature range of 1400°-1550°C.
Sintered zircon grog, crushed to various grain sizes has
been further experimented for thermal shock resistance of
briquette samples made from it and fired at 1400° and
1550°C for 2 hrs. |
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