ASTM D1757 – Standard Test Method for Sulfate Sulfur in Ash from Coal and Coke (Withdrawn 2009)
Description:
Significance and Use
Laboratory furnace temperature and furnace ventilation have an influence on SO3 retention in laboratory ash. Consequently, sulfur in ash as determined in the laboratory cannot be assumed to be equivalent to sulfur present in the mineral matter in coal or to the retention of sulfur in ash produced under the conditions of commercial utilization.
The sulfate sulfur determined by these test methods can be used to calculate the sulfur trioxide portion of ash so that the ash content or ash composition can be reported on a sulfur trioxide free basis.
Scope
1.1 This test method pertains to the determination of sulfate sulfur in coal or coke ash.
1.2 The values stated in SI units (Practice E 380) shall be regarded as the standard.
ASTM D1754