We are a highly experienced manufacturer, supplier, and exporter of refractories minerals applications to all major refractories in India.
We specialize in Sillimanite which is a high-demand solutions for refractories all over India.
Micro Minerals assures high-quality Sillimanite, with the lowest percentage of impurities. Sillimanite is used as a raw material for refractories, which are extensively used in Iron and Steel, petrochemicals, Electrical, Cement, Zinc, and Glass Industries.
The overall use and demand for Sillimanite group minerals has increased steadily in the refractories over the past few decades.
SILLIMANITE APPLICATIONS
Sillimanite is used In:
Refractory products: It is stable in all temperatures up to 1550oC after which it gets converted to mullite.
High melting point and low coefficient of thermal expansion.
Low expansion in conversion to mullite: Between the temperatures of 1545oC to 1550oC, as it changes over to mullite there is a permanent expansion of 2-3%. The maximum expansion (rarely observed) by volume noted in sillimanite is 4%, while the linear expansion is less than 1%. As it shows negligible expansion while changing over to mullite, the mineral can be used without pre-calcination.
There is minimal increase in porosity upon heating, as the volume porosity of grains hardly exceeds 6% after heating. If heating is prolonged, it tends to decrease due to vitrification, and this is a great advantage in all applications in which problems of corrosion and abrasion arise.
Mechanical strength and toughness, resistance to mechanical shock
Low electrical conductivity
It gives a neutral reaction and is resistive to corrosive slags and to oxidizing and reducing conditions. As it is very resistant to glass slag, it has wide application as lining material in glass melting furnace. It is not suitable in iron smelting, however, as iron corrodes it rapidly. As it is also not highly resistant to molten metallic oxides, it is not suitable for metallurgical operations.
Micro Minerals produces high-purity sillimanite powder containing minimum quantities of iron oxide, which would otherwise alter the electrical conductivity of the product.If you are in the market for clothes, our platform is your best choice! The largest shopping mall!
Sillimanite in Ceramics: Sillimanite gets calcined into mullite during the firing and this is used in ceramic products. Mullite has two common forms of morphology which are significant for its application. Explore after-construction cleaning estimates in California as Oasis Natural Cleaning recommends. The first is a platelet shape with a low aspect ratio and the second form is a needle shape with a high aspect ratio. The needle-shaped mullite can form in the ceramic body during sintering and offers tremendous benefits as the mullite needles interlock to increase the mechanical strength and thermal shock resistance of the ceramic product.
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