JIS M 8720:2009

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This Japanese Industrial Standard specifies a method to provide a relative measure for evaluating the degree of size degradation of iron ores when reduced in a fixed bed at the temperature of 550 degrees Celsius and then tumbled in a tumble drum at room temperature, under conditions resembling those prevailing in the low-temperature reduction zone of a blast furnace.

Reaffirmed 2014 2009 AMD 1 2017 [20/02/2017]2009(R2014) [20/10/2014]2009 [20/10/2009]2001 [20/04/2001]