ISO/TC 102/SC 3 - Physical testing

This document specifies a method to provide a relative measure for evaluating the structural stability of iron ores when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. This document is applicable to lump ores and hot-bonded pellets.

This document specifies a method to provide a relative measure for evaluating the degree of size degradation and degree of metallization of iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. This document is applicable to lump ores and hot-bonded pellets.

This document specifies a method to provide a relative measure for evaluating the extent to and ease with which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. This document is applicable to lump ores, sinters and hot-bonded pellets.

ISO 21283:2018 specifies a method to determine the fineness of iron ores in terms of specific surface area, using the manual Blaine air-permeability apparatus. ISO 21283:2018 is applicable to pellet feeds in the range of 400 cm2/g to 2 500 cm2/g of specific surface area.

ISO 15968:2016 specifies a method of determining the apparent density and water absorption of direct reduced iron by immersion in water. ISO 15968:2016 is applicable to hot briquetted iron (HBI).

ISO 4696-2:2015 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced with carbon monoxide and nitrogen, under conditions resembling those prevailing in the low-temperature reduction zone of a blast furnace. ISO 4696-2:2015 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 4696-1:2015 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced with carbon monoxide, carbon dioxide, hydrogen, and nitrogen, under conditions resembling those prevailing in the low-temperature reduction zone of a blast furnace. ISO 4696-1:2015 is applicable to lump ores, sinters, and hot-bonded pellets.

ISO 11258:2015 specifies a method to provide a relative measure for evaluating the extent to and ease to which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. It specifies the determination of the reducibility, final degree of reduction, and degree of metallization. ISO 11258:2015 is applicable to lump ores and hot-bonded pellets.

ISO 7215:2015 specifies a method to provide a relative measure for evaluating the extent to which oxygen can be removed from iron ores when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 7215:2015 is applicable to lump ore, sinters, and hot-bonded pellets.

ISO 8371:2015 specifies a method to provide a relative measure for evaluating the degree of size degradation caused by rapid heating of iron ores. It specifies the determination of the decrepitation index. ISO 8371:2015 is applicable to lump ores for blast furnace feedstocks.

ISO 4700:2015 specifies a method to provide a measure of the compressive load attained to cause breakage of pellets. This International Standard is applicable to hot bonded pellets.

ISO 11256:2015 specifies a method to provide a relative measure for evaluating the formation of clusters of iron ore pellets when reduced under conditions resembling those prevailing in shaft direct-reduction processes. ISO 11256:2015 is applicable to hot-bonded pellets.

ISO 13930:2015 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced under conditions resembling those prevailing in the low-temperature reduction zone of the blast furnace. It is applicable to lump ores and hot-bonded pellets.

ISO 3271:2015 specifies a method to provide a relative measure for evaluating the resistance of iron ores to size degradation by impact and abrasion. It covers the determination of the tumble and abrasion indices. This International Standard is applicable to lump ores, sinters, and hot-bonded pellets.

ISO 4698:2007 specifies a method to provide a relative measure for evaluating the increase in volume of iron ore pellets, when reduced in an unconstrained bed under conditions resembling those prevailing in the reduction zone of a blast furnace. It specifies the determination of the free-swelling index. ISO 4698:2007 is applicable to hot-bonded pellets.

ISO 15967:2007 specifies a method to provide a relative measure for evaluating the resistance of direct reduced iron to size degradation by impact and abrasion. ISO 15967:2007 specifies the determination of the tumble and abrasion indices of hot briquetted iron (HBI).

ISO 3852:2007 specifies two methods of determining the bulk density of iron ores. Method 1 is applicable to natural iron ore and processed iron ore having a nominal top size of 40 mm. Method 2 is applicable to any natural iron ores and processed ores, regardless of size.

Applicable to all iron ore fines that are agglomerated by the sintering process. Figure 1 gives an example of sintering test equipment, Figure 2 the flowsheet of typical sinter test procedure. Annex A lists international standards specifying the relevant test methods.

ISO 4695:2015 specifies a method to provide a relative measure for evaluating the extent to and ease with which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 4695:2015 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 11257:2015 specifies a method to provide a relative measure for evaluating the degree of size degradation and degree of metallization of iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. ISO 11257:2015 is applicable to lump ores and hot-bonded pellets.

ISO 7992:2015 specifies a method to provide a relative measure for evaluating the structural stability of iron ores when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 7992:2015 is applicable to lump ores and hot-bonded pellets.

ISO 8371:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation caused by rapid heating of iron ores. It specifies the determination of the decrepitation index. ISO 8371:2007 is applicable to lump ores for blast furnace feedstocks.

ISO 4696-1:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced with carbon monoxide, carbon dioxide, hydrogen and nitrogen, under conditions resembling those prevailing in the low-temperature reduction zone of a blast furnace. ISO 4696-1:2007 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 4696-2:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced with carbon monoxide and nitrogen, under conditions resembling those prevailing in the low-temperature reduction zone of a blast furnace. ISO 4696-2:2007 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 11257:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation and degree of metallization of iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. ISO 11257:2007 is applicable to lump ores and hot-bonded pellets.

ISO 13930:2007 specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced under conditions resembling those prevailing in the low-temperature reduction zone of the blast furnace. ISO 13930:2007 is applicable to lump ores and hot-bonded pellets.

ISO 7992:2007 specifies a method to provide a relative measure for evaluating the structural stability of iron ores, when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 7992:2007 is applicable to lump ores and hot-bonded pellets.

ISO 4695:2007 specifies a method to provide a relative measure for evaluating the extent to and ease with which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 4695:2007 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 11256:2007 specifies a method to provide a relative measure for evaluating the formation of clusters of iron ore pellets when reduced under conditions resembling those prevailing in shaft direct-reduction processes. ISO 11256:2007 is applicable to hot-bonded pellets.

ISO 7215:2007 specifies a method to provide a relative measure for evaluating the extent to which oxygen can be removed from iron ores when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace. ISO 7215:2007 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 11258:2007 specifies a method to provide a relative measure for evaluating the extent and ease to which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in shaft direct-reduction processes. It specifies the determination of the reducibilty, final degree of reduction and degree of metallization. ISO 11258:2007 is applicable to lump ores and hot-bonded pellets.

ISO 3271:2007 specifies a method to provide a relative measure for evaluating the resistance of iron ores to size degradation by impact and abrasion. It covers the determination of the tumble and abrasion indices. ISO 3271:2007 is applicable to lump ores, sinters and hot-bonded pellets.

ISO 4700:2007 specifies a method to provide a measure of the compressive load attained to cause breakage of pellets. ISO 4700:2007 is applicable to hot-bonded pellets.

Describes a method for the determination of relative reducibility of natural and processed iron ores. Replaces the first edition of which some clauses have been technical revised.

Describes a method for evaluating the tumble strength of iron ores by determining the tumble index and the abrasion index. Applicable to sized iron ore and ore agglomerates. Replaces the second edition.

Specifies a method for determining the reducibilty index of iron ores expressed as reduction rate of natural iron ores. Replaces the first edition of which have been technical revised.

Specifies a method for the determination of the decrepitation index of lump iron ore.

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.

Specifies a method for evaluating the physical stability of iron ores reduced under load and under specific conditions. The specific conditions are: isothermal heating for reduction, a test portion having a specified size and placed in a fixed bed under load, a reducing gas composed of a carbon monoxide/hydrogen/nitrogen mixture, measurement of the differential gas pressure across a bed of the test portion and measurement of the change in the height of the bed. Applies to sized ores and pellets. Annex A gives the flowsheet of the procedure for the acceptance of test results.

This second edition cancels and replaces the first edition (ISO 3852:1977) and ISO 5464:1980, and includes the determination of bulk density for particles greater than 40 mm. Specifies two methods for measuring the bulk density of natural and processed iron ores.