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Standards Development
This standard specifies a method for determination of Chromium in iron ores by flame atomic absorption spectrometry.
The method is applicable for element in content range (mass fraction) as follows; Cr: 0.001%~2.0%.
In iron ore, in addition to magnets, hematite, ilmenite, limonite, etc., which have industrial use value, more and more multi-component symbiotic iron ore is widely used, and some symbiotic (associated) components are economical The value even exceeds the value of iron ore, such as containing chromite, REO, V, Ti, etc. The symbiotic components mainly include more than 30 kinds of Ni, Cr, Ca, Ti, Mn, etc. The chromium content is close to 2.0 %. The existing international standard ISO15634- 2005 Iron ores-Determination of chromium content-Flame atomic absorption spectrometric method, its analysis range of 0.001% ~ 0.1% cannot cover chromium content. The purpose of revising ISO15634: 2005 is to increase the upper limit of the analysis of chromium in iron ore by flame atomic absorption spectrometry to 2.0% and increase the authority of the international standard. This standard is intended for member body of ISO, analytical chemistry experts, laboratory staff, and iron ores industrials, accreditation bodies, for those commissioning measurements and for those using measurement results.
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