- A single furnace unit for testing to the following standards : ISO 4695 – Iron ore reducibility.
- Reducibility may be defined as a measure of the ease with which oxygen, combined with iron, can be removed from natural or processed iron ores by a reducing gas, which is expressed as the rate of reduction at an atomic ration O/Fe = 0.9, relative to the iron (III) state.
- The test consists of isothermal reduction of a test portion at a specified size range in a fixed bed at a temperature of 950ºC using a reducing gas consisting of CO and N2. ISO 4696 – Low temperature disintegration test: Evaluating the disintegration behaviour of iron ores reduced in a fixed bed under specific conditions relevant to the low temperature zone in the blast furnace for iron making.
- This method is a measure of the breakdown of blast furnace burden materials under conditions resembling those in the upper part of the blast furnace.
- In principle, the test specifies a method for testing the disintegration of iron ores by tumbling, at room temperature, a sample that has been reduced in a fixed bed at a temperature of 500ºC.
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