Specifies a method for determining the swelling properties of hard coal when heated under standard conditions in a dilatometer. In performing the method a pencil made of powdered coal formed under pressure is inserted into a precisely calibrated narrow tube and topped by a calibrated steel rod which slides in the bore of the tube. The whole is heated at a constant and definite rate. By making regular readings of the displacement of the rod as a function of the temperature and expressing the displacements observed as percentages of the original length of the penicl a curve is plotted.
Số hiệu tiêu chuẩn
ISO 349
Tên tiêu chuẩn
Hard coal; Audibert-Arnu dilatometer test
Ngày phát hành
1975-01-00
Tiêu chuẩn tương đương
SANS 349:1975*SABS ISO 349:1975 (2001-04-20) * DIN 23003 (1976-04), MOD * DIN 51739 (1976-05), MOD * DIN 51739 (1998-05), MOD * GB/T 5450 (1997), IDT * GB/T 5450 (2014), MOD * NF M11-006 (2004-05-01), IDT * M11-006PR, IDT * JIS M 8801 (1993-07-01), MOD * GOST 13324 (1994), IDT * TS 2397 (1976-07-01), IDT * NP-3736 (1988), IDT * CSN ISO 349 (1995-08-01), IDT * SABS ISO 349:1975 (2001-04-20), IDT
Từ khóa
Bituminous coal * Coal * Coking * Dilatometry * Hard coal * Pellets * Physical testing * Solid fuels * Testing * Tests
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