A test piece, in the form of a pencil, prepared from powdered coal is heated at a constant rate in a steel retort positioned in a furnace, the temperature monitoring system having been previously calibrated using two reference metals of known melting points. The change in level of a piton resting upon the test piece is observed continuously, and record is produced which is characteristic of the swelling properties of the coal.
Số hiệu tiêu chuẩn
ISO 8264
Tên tiêu chuẩn
Hard coal; determination of the swelling properties using a dilatometer
Ngày phát hành
1989-11-00
Tiêu chuẩn tương đương
SANS 8264:1989*SABS ISO 8264:1989 (2001-04-20) * DIN 51739 (1998-05), MOD * BS 1016-107.3 (1990-10-31), NEQ * JIS M 8801 (2004-03-20), MOD * UNI ISO 8264:1998 (1998-07-31), IDT * CSN ISO 8264 (1996-01-01), IDT * SABS ISO 8264:1989 (2001-04-20), IDT
Thay thế cho
ISO/DIS 8264 (1984-12)
Từ khóa
Bituminous coal * Coal * Determination * Dilatometers * Hard coal * Minerals * Solid fuels * Swelling * Test equipment * Testing * Tests * Pit coal * Ores * Raw coal