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ISO 9686:1992

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Direct reduced iron — Determination of carbon and/or sulfur content — High frequency combustion method with infrared measurement

The method is based on combustion of the test portion in a refractory crucible in a flow of oxygen in the presence of an accelerator, conversion of the carbon present into carbon dioxide and the sulfur present into sulfur dioxide, and measurement of each gas by infrared absorption. Applies to carbon contents between 0,05 % and 2,5 % and/or sulfur contents between 0,001 % and 0,05 % in direct reduced iron.

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ISO 9686:1992

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