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ISO 4698:1994

Iron ore pellets — Determination of relative free-swelling index

Standard Details

The principle of the method specified is determination of swelling of fired iron ore pellets of a specified size range under isothermal reduction, determination of the volume of pellets before and after reduction at a temperature of 900 °C, using a reducing gas consisting of carbon monoxide and nitrogen, calculation of the free-swelling index, expressed as a percentage, using the difference between the two volumes.

General Information

Status : WITHDRAWN
Standard Type: Main
Document No: ISO 4698:1994
Document Year: 1994
Pages: 13
Edition: 1

Life Cycle

WITHDRAWN

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WITHDRAWN
ISO 4698:1994
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