What is BS 1016-108.2 - Determination of Micum and Irsid indices about?
BS 1016 is a series on methods for the analysis and testing of coal and coke. Coal and coke are fuels used in the steelmaking process that is created by heating coal in the absence of air.
BS 1016-108.2 describes methods for determining the strength of coke by the Micum and Irsid tests. BS 1016-108.2 is applicable to coke having a nominal top size greater than 20 mm.
Who is BS 1016-108.2 - Determination of Micum and Irsid indices for?
BS 1016-108.2 on the determination of Micum and Irsid indices is useful for:
- Coke mining fields
- Iron machines manufacturers
- Fuel production industries
- Quality control personnel
Why should you use BS 1016-108.2 - Determination of Micum and Irsid indices?
The unqualified term "coke" usually refers to the product derived from low-ash and low-sulphur bituminous coal by a process called coking. BS 1016-108.2 states that A test portion taken from the coke above 20 mm particle size and of known size distribution is subjected to mechanical stresses in a rotating drum for 100 revolutions (Micum test) or 500 revolutions (Irsid test). The mass of coke which is then retained on each of two or more test sieves of different aperture sizes is determined.
Micum test states that Transfer the test portion (see clause 6) into the clean and empty drum (4.1), taking care to minimize breakage of the coke. Secure the cover on the drum. Rotate the drum at a constant 25 ± 1 r/min (a rotational frequency of 0.417 ± 0.017 Hz) for 100 revolutions. Allow the dust to settle for 1 min, remove the cover and empty the contents of the drum into the tray (4.2). Using the test sieves (4.3) corresponding to the indices to be determined, sieve all the contents of the tray by hand-placing the coke on the sieves of aperture size down to and including 40 mm and by handshaking for the smaller aperture sizes. Irsid test carries out the test as described in BS 1016-108.2 but rotates the drum at a constant 25 ± 1 r/min for 500 revolutions (instead of 100 revolutions). Using BS 1016-108.2 you can describe methods for determining the strength of coke by the Micum and Irsid tests.
