Anti Oxidation Refractory Frit – GF 16R
Carbon containing refractories are the most consumed products in iron & steel industries. MgO – C, Al2O3 – C, Al2O3 – SiC – C etc are the most common consumables in this category. They are applied in several areas like Ladle, converter also in flow control products. In these refractories carbon is usually used in the form of graphite, coke, pitch etc. However carbon is susceptible to oxidation during preheating, wherever required, which generates pores that subsequently penetrated by the molten metal and slag during the casting and refining operation. This eventually reduces the life of the refractories and increases the consumption of the refractories per ton of steel produced. Antioxidant coating mass reduces the oxidation of the carbon which increases the operation cycle of the lining.
Antioxidant Coating mass is applied over the carbon containing refractories by spraying or manual painting. This coating forms an impervious layer over the refractory and same stops the infiltration of O2 through this layer and as a result the carbon does not get oxidized during preheating. However during casting, the coating gets washed by the molten metal but during this period, the carbon in the refractory component gets graphitized and becomes more oxidation resistant.
|2||Residue (240# )||5%|
|3||Softening Point (OC)||680|
|4||Maturing Temperature (OC)||850|
|5||Coefficient of Thermal Expansion at 350oC||1.18 x 10-6/ O C|
|6||Solubility in water||Insoluble|
The powder is applied in the form of coating. The coating material is prepared with the help of suitable binder material (phosphate, silicate binder etc.)
Storage and Packaging:
The product is available in 25 kg polyethylene stitched sacks .To avoid deterioration of packing it is recommended that product is stored in dry and shaded area.
Its shelf life is indefinite, if stored properly.
Refractory Frit –GF 204
Refractory frit is a leadless borosilicate glass, ground to suitable particle size which is used as a bonding agent in refractory masses. It works in an intermediate temperature and helps in binding the masses to give initial strength and also act as sintering aid.
|2||Loose Bulk density(g/cc)||0.8|
|3||Residue (240# )||5%|
|4||Softening Point (oC)||663.4|
|5||Linear Themal Expansion at 500o C (%)||0.135|
|6||pH ( 1% solution)||8-9|
The product is widely used in basic vibro ramming mass to reduce the sintering temperature. It also provide structural strength at intermediate temperature (500-800o C) of ramming mass.
It has advange over boric acid because it does not micgrate from the compostion so no cracking and hence no chances of structural failure.
FRIT AGN 105
The composition formed by fusing inorganic oxide materials. Due to its low softening point it can be used as a frit for binding the abrasive materials. It gives a good compressive strength at high temperature. It is also stable up to 11000C.
|2||Softening temperature (ºC)||800-850|
|3||Residue on 240 Mesh BSS (%)||< 2|
|4||Loose Bulk Density (g/cc)||0.75-0.9|
1. Refractory coating
2. Abrasive material binding
Recommended Dosage & Direction Of Use
As per the requirement by adding suitable proportion of it.
FRIT AGN 107
The composition formed by fusing inorganic oxide materials. Due to its very low softening point it can be used as a low temperature binding frit. It can be used for binding the grains for abrasive materials as well as refractory coating purpose where the application temperature is comparatively low.
|2||Softening temperature (ºC)||600-650|
|3||Residue on 240 Mesh BSS (%)||<|
|4||Loose Bulk Density (g/cc)||0.85-1.0|
1. Grinding wheel
2. Low temperature Refractory coating
Recommended Dosage & Direction Of Use
Make a choice of coating by adding suitable proportion of it.