Description

Index item Specification standard
SMKR-90 SMKN-87 SMKN-84
 Technical specification 1523-025-00188162-98
 Mass fraction of burning substance,%,      
Al2O3, > 90 87 84
SiO2, Range 4,0-7,0 - -
Fe2O3,< 1,2 1,0 1,0
P2O5, Range - - 0,9-1,7
B2O3, Range - 1,1-1,8 1,1-1,8
loss on ignition,%,<  1,2-1,7  -  -
 Water content,%,< 2,6 1,0 1,0
Granularity,Screen passing rate,%,:      
№5, < - 99 99
№3,2 > 100 - -
№2, < - 77 77
№1, > 95 - -
№05, < 90 42-50 42-50
№009, Range 45-60 - -
№0063, Range - 20-26 20-26
№004, Range 42-57 - -
Usage Used for the whole lining of lead bronze electric furnaces

 

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