Revision:January 10, 2000

Published Date:January 10, 2000

Status:Active, Most Current

Document Language:

Published By:Standards Australia International, Ltd. (SAI)

Page Count:20

ANSI Approved:No

DoD Adopted:No

This Standard sets out two methods for the determination ofmineral matter in coal, and a method for determination of water ofconstitution.

The methods for mineral matter determination are as follows:

(a) Radio-frequency oxygen plasma oxidation.

(b) Air oxidation (370°C).

Both methods are known as low-temperature oxidation techniques.The radio-frequency method yields a residue that containsessentially the original unchanged mineral matter of the coal, andis suitable for semi-quantitative analysis of the mineral mattercomposition. Predictable alteration of some minerals occurs in theair oxidation process, and appropriate empirical corrections aremade.

NOTE:

1 For the applicability of this Standard to lower rank coals,reference should be made to Appendix A.

 2 It is advisable to use the radio-frequency oxygen plasmaoxidation method for coals of high ash, due to significantirreversible loss of water of constitution in the air oxidationmethod.