A test portion is deated in a tared platinum crucible, in a furnace at 700 degrees centigrade, under oxidizing and specified conditions, to constant mass. The residue is cooles and weighed. The method is applicable to products (tar pitch, petroleum pitch, etc.) producing a quality of ash greater than or equal to 0,05 % (m/m).
Status : PublishedPublication date : 1985-08
Edition : 1Number of pages : 3
Technical Committee:Materials for the production of primary aluminium
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