GB/T 3257.2-1999 Methods for chemical analysis of bauxite--Determination of silicon dioxide content--Gravimetric-molybdenum blue photometric method (English Version)
This standard specifies the determination method of silica content in bauxite ore. This standard applies to the determination of silica content in bauxite ore, the determination range: ≥15%.
GB/T 3257.2-1999 history
1999GB/T 3257.2-1999 Methods for chemical analysis of bauxite--Determination of silicon dioxide content--Gravimetric-molybdenum blue photometric method
GB/T 3257.2-1999 Methods for chemical analysis of bauxite--Determination of silicon dioxide content--Gravimetric-molybdenum blue photometric method was changed to YS/T 575.2-2006 Method for chemical analysis of bauxite ore gravimetric-molybdenum blue photometric method for determination of silica content.