Blast furnace
refractories:
Development of
blast furnace ceramic cup increasingly common, but require high corrosion
resistance of refractories application to ensure its life extended. In addition
to changes in the design of the refractory material respects, great changes
have taken place, such as a micro porous carbon brick ordinary charcoal instead
of the past in order to reduce the penetration of molten iron. Clay refractory
bricks used as raw material can adapt to the requirements stemming mouth of
iron. Grouting method using blast furnace repair backing backing can
effectively prevent the erosion of hot air, thereby extending the life of the
blast furnace lining.
Converter
refractories:
In steelmaking, the kind of
water-cooled technolovgy and suspension systems are in the upper part and the
lower cone barrel parts BOF shell has been applied, thus reducing the converter
furnace deformation, extending converter lining life, improve productivity
converter. These new technologies have some impact on the use of refractories.
So that the converter furnace furnace up to 4000 more than the average,
combined with gunning, the application of high lime and dolomite applications
and slag splashing technology, furnace over 10,000 times is not a problem. This
is the direction of development of refractories producer worth attention.
Submerged
nozzle for continuous casting:
Since the development of the
system of casting tundish transfer station from the past into the present
effects of cast steel quality and increase the productivity
Submerged nozzle as an
important function of continuous casting refractories, research carried out
mainly focused on two aspects, one is to improve the corrosion resistance of
slag line, the second is to reduce the inner wall of Al2O3 attachment. Take the
ZrO2 content increased 88%, as well as a good measure of the particle size
distribution can reduce the thermal expansion coefficient and porosity of
products, improve the density improvement slag resistance.
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