The raw material chosen is a high grade quartzite and it has the folloeing advantages
uniform hardness, high degree of refractoriness, good salg resistance.
Specification : sio2-98 99.5% min, al2o3- traces, iron-nil
sintering porosity-1200 degreec, compression strength- 350kgm3, bulk density- 2.0 to2.2 m.tm3
physical grading analysis :
coarse - 35%, medum - 33%, fines - 32%.
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