M00001316
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ISO 9599 2nd Edition, October 1, 2015 Copper, lead, zinc and nickel sulfide concentrates - Determination of hygroscopic moisture content of the analysis sample - Gravimetric method
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Availability date: 07/13/2021
Description / Abstract:
This International Standard specifies a gravimetric loss-in-mass
method for the determination of the hygroscopic moisture content in
analysis samples of copper, lead, zinc, and nickel sulfide
concentrates.
The method is applicable to copper, lead, zinc, and nickel
sulfide concentrates free from volatile organic flotation reagents,
for example kerosene, and with hygroscopic moisture contents
between 0,05 % (m/m) and 2 % (m/m). The hygroscopic moisture
content is used to correct the analysis results from the
equilibrated moisture level to the dry basis.
NOTE The result of the determination of hygroscopic moisture
content using this International Standard should not be reported as
part of the analysis of a concentrate sample. Whenever the bulk
moisture content of a commercial shipment of concentrate is
required, ISO 10251 should be used. The determination of
hygroscopic moisture content and the determination of bulk moisture
content are connected with each other. In both determinations, the
same state of dryness has to be achieved, in order to ascertain the
correct metal content of a lot.
This method is not applicable to sulfide concentrates that are
susceptible to oxidation (see 6.3, note 2). Annex A sets out a
modified procedure, which can be used for sulfide concentrates that
are susceptible to oxidation.