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Raw Materials Required
 SILICA SAND
Annual Requirement - 1,200 MT
Sand for Scouring (U-300)
Fe2O3 300 ppm (Max)
Practical Size
ASTM +16 Nil
-16,+20 30% (Max)
-30 10.0% (Max)

Thermal shock

Heat to 1000 degree celcius for 5 minutes. Quench by pouring into cold water. Dry; percentages through 20 mesh (ASTM) and 30 mesh (ASTM) are determined. These sizes should not increase by more than 1.5% as determined by sieve analysis before and after treatment.
 
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  The Kerala Minerals & Metals Ltd. (A Government of Kerala Undertaking), Sankaramangalam, Chavara, Kollam, Kerala, India - 691 583,
Tel: +91 476 2686722 to 2686733 Fax: +91 476 2680101, 2686721 Send us an email
 
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