Standard Test Method for Disintegration of Refractories in an Atmosphere of Carbon Monoxide

SCOPE
1.1 This test method covers the comparative behavior of refractories under the disintegrating action of carbon monoxide(CO). The test method is an accelerated exposure to CO to determine potential material behavior in a relatively short time.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Nov-1997
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM C288-87(1997) - Standard Test Method for Disintegration of Refractories in an Atmosphere of Carbon Monoxide
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation:C 288–87(Reapproved1997)
Standard Test Method for
Disintegration of Refractories in an Atmosphere of Carbon
Monoxide
This standard is issued under the fixed designation C 288; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 20°F (11°C). The chamber may be provided with a thermo-
couple well and shall have a gas inlet and outlet, with a
1.1 This test method covers the comparative behavior of
provision for gas sampling at the outlet.
refractories under the disintegrating action of carbon monox-
3.2 Temperature-Control Instrument—The temperature of
ide(CO). The test method is an accelerated exposure to CO to
the test chamber shall be controlled and recorded by a suitable
determinepotentialmaterialbehaviorinarelativelyshorttime.
instrument having the required accuracy.
1.2 The values stated in inch-pound units are to be regarded
3.3 Atmosphere Control—The CO shall be supplied from a
as the standard. The values given in parentheses are for
tank, or of the gas, or manufactured by the conversion of
information only.
carbon dioxide(CO ). The pressure from a tank supply (Cau-
1.3 This standard does not purport to address all of the
tion, see Note 1) shall be reduced by a regulator made for that
safety concerns, if any, associated with its use. It is the
purpose, and the flow of gas adjusted by means of a sensitive
responsibility of the user of this standard to establish appro-
needleorregulatingvalve.Aflowmetershallbeusedintheline
priate safety and health practices and determine the applica-
asanaidforregulatingtheflow.WhenCOisusedfromatank,
bility of regulatory limitations prior to use.
iron carbonyl is present in the gas and may cause clogging of
2. Significance and Use
the inlet tube, in which case the carbonyl may be removed
before the gas enters the chamber. A soda-asbestos (the
2.1 This test method is used to determine the relative
Ascarite) tower in the inlet line will remove the carbonyl, but
resistance of various refractories to disintegration caused by
this should be preceded by a drying tower to prevent moisture
exposure to a CO atmosphere. The results obtained by this
from getting into the soda-asbestos.
method can be used to select refractories that are resistant to
CO disintegration.
NOTE 1—Caution:As a precaution against the possibility of tank
2.2 This test method is suitable for research and develop-
explosions, the tanks should be stored and used outdoors or in a separate
ment and for establishing CO disintegration criteria for speci- building designed to reduce the explosion hazard.
fication acceptance.
3.4 Furnace Pressure Control—The unit shall be equipped
2.3 The disintegration of test specimens is accelerated by
with a bubbling bottle or a sensitive gage to control the
providing a higher concentration of CO than anticipated in
pressure of the exhaust gas. A positive pressure shall be
most service environments. The effects on the test specimens
maintained throughout the test.
may be different than those found for refractories in actual
3.5 Gas Analyzer— Any conventional gas analyzer can be
service conditions.
used to periodically determine the CO content of the exhaust
gas.
3. Apparatus
3.1 Heated Chamber— The chamber shall be gastight and 4. Test Specimens
of a suitable size, made of stainless steel, brass, aluminum, or
4.1 Ten specimens shall constitute a specimen set.
unoxidized Monel metal. A suggested size is 18 in. (460 mm)
4.2 The specimens shall be 9 in. (228 mm) long and 2½ or
in diameter and 36 in. (914 mm) long. The unit may be heated
3in.(64or76mm)squareincrosssection.Onlyonespecimen
by resistance wire or other means, provided that at the
shall be cut from a shape so that as many original surfaces as
temperatureofoperationthedifferenceintemperaturebetween
possible remain intact. The specimen shall be cut lengthwise
any two points within the chamber shall not be greater than
from the original shape.
5. Unfired Samples
This test method is under the jurisdiction of ASTM Committee C-8 on
5.1 Unfired refractories shall be prepared for testing by
Refractories and is the direct responsibility of Subcommittee C08.07 on Alumina,
firingfor5hunderoxidizingconditionsatoneofthefollowing
Silica, and Special Refractories.
Current edition approved Jan. 30, 1987. Published April 1987. Originally
temperatures:
e1
published as C288–52T. Last previous edition C288–78 (1984) .
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
Internatio
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