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Normas ASTM – AENOR
ASTM E945-02a

ASTM E945-02a

Standard Test Method for Determination of Zinc in Zinc Ores and Concentrates by Complexometric Tritrimetry

Fecha:
2017-08-16 /Historical
Superseeded by:
Scope:

1.1 This test method covers the determination of zinc in ores, concentrates, and related materials having chemical composition within the following limits:

Element Concentration Range, %
Zinc 5.0 to 70.0
Lead 0.5 to 50.0
Copper 0.1 to 3.0
Iron 0.5 to 16.0
Sulfur 4.0 to 30.0
Calcium 0.1 to 20.0
Magnesium0.1 to 10.0
Cadmium 0.1 to 8.0
Arsenic 0.01 to 1.0
Antimony0.01 to 0.005
Bismuth 0.001 to 0.1
Cobalt 0.1 to 0.5
Nickel 0.3 to 3.0
Silver 0.00 to 150 oz/ton
Gold 0.00 to 1.0 oz/ton

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords:
EDTA; titration; extraction; zinc ores; concentrate
45,36
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