IS 1473 : 2004 Methods of Chemical Analysis of Manganese Ores

ICS 73.060.20 MTD 34
Reaffirmed 2021

1 Scope

This standard prescribes the following methods for determinationof various elements in manganese ores:

a) Chemical analysis by gravimetric and volumetric method, and

b) Atomic absorption method.

The gravimetric and volumetric methods are suitable fordetermination of silica, barium oxide, manganese, iron, phosphorus,sulphur, alumina and other elements in manganese ores andconcentrates.

The atomic absorption method can be used for the determinationof Si, Al, Ti, Fe, Ca, Mg, Cu, Pb, Zn, Co, Cr, V, Ba and K, in thefollowing ranges and composition:

SiO2 0.25 percent to 25 percent
Al2O3 0.12 percent to 25 percent
TiOAl2 0.20 percent to 2.5 percent
Fe2O3 50 ppm to 22.5 percent
CaO 20 ppm to 10 percent
MgO 5 ppm to 10 percent
Na2O 5 ppm to 500 ppm
K2O 5 ppm to 500 ppm
Cn 10 ppm to 0.25 percent
Pb 25 ppm to 0.25 percent
Zn 5 ppm to 0.25 percent
Cr 10 ppm to 0.25 percent
Co 10 ppm to 0.25 percent
V 250 ppm to 0.25 percent

2 References

IS 264 : 1976 Nitric acid

IS 265 : 1993 Hydrochloric acid

IS 266 : 1993 Sulphuric acid

IS 323 : 1959 Specification for rectified spirit

IS 1070 : 1992 Reagent grade water

IS 1449 : 1976 Methods of sampling of manganese ore

IS 7659 : Part 1 : 1975 Reagents and standard solutions for use in chemical analysis of metals, ores and minerals: Part 1 Volumetric solution

IS 11895 : 1986 Classification of manganese ore, ferruginous manganese ore, silicious manganese ore and manganiferrous iron ore