ASTM C874-11a
(Practice)Standard Test Method for Rotary Slag Testing of Refractory Materials (Withdrawn 2020)
Standard Test Method for Rotary Slag Testing of Refractory Materials (Withdrawn 2020)
SIGNIFICANCE AND USE
This test method outlines a procedure which, when appropriate evaluation methods are added, can be useful in the development of new products or in the selection of products to be used in contact with a particular slag composition.
A gradient exists through the test specimens that is controlled by the thermal conductivity of the specimens and backup material. The slag is constantly renewed so that a high rate of corrosion is maintained. The flow of the slag can cause mechanical erosion of materials. The tilt and rotational speed of the furnace will affect the amount of mechanical erosion.
Use caution in interpreting results when materials of vastly different types are included in a single run. Care must be taken to prevent oxidation of carbon-containing materials during heat up; failure to do so can result in highly erratic results. A reference refractory specimen, or specimens, should be used for comparison.
SCOPE
1.1 This test method describes a procedure for comparing the behavior of refractories to the action of molten slag in a rotating test furnace. A reference material should be included in each test and run for comparison. No numeric results are obtained from this test method. Numeric evaluation of test results is the responsibility of the test operator. The test and equipment are patterned after a method developed by Valley Dolomite Corporation .
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, 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.
WITHDRAWN RATIONALE
This test method described a procedure for comparing the behavior of refractories to the action of molten slag in a rotating test furnace.
Formerly under the jurisdiction of Committee C08 on Refractories, this test method was withdrawn in January 2020 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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Designation: C874 − 11a
Standard Test Method for
1
Rotary Slag Testing of Refractory Materials
This standard is issued under the fixed designation C874; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope results. A reference refractory specimen, or specimens, should
be used for comparison.
1.1 This test method describes a procedure for comparing
the behavior of refractories to the action of molten slag in a
3. Apparatus
rotatingtestfurnace.Areferencematerialshouldbeincludedin
3.1 Furnace, consisting of a cylindrical shell, typically 18
each test and run for comparison. No numeric results are
in. (456 mm) long and with a 10 in. (254 mm) inside diameter,
obtained from this test method. Numeric evaluation of test
mounted on rollers and motor driven. Both the rotation and tilt
results is the responsibility of the test operator. The test and
of the furnace along its long axis should allow for adjustment.
equipment are patterned after a method developed by Valley
2
Dolomite Corporation .
3.2 Burner—A gas-oxygen torch capable of heating the
furnace to 3200°F (1760°C). The burner should be equipped
1.2 The values stated in inch-pound units are to be regarded
with flowmeters to monitor gas and oxygen flows.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3.3 Optical Pyrometer.
and are not considered standard.
3.4 Tools, for (1) a means of feeding slag pellets into
1.3 This standard does not purport to address all of the
furnace, and (2) to assemble and dismantle the furnace.
safety concerns, if any, associated with its use. It is the
3.5 Gas Atmosphere Analyzer and Sampling Equipment.
responsibility of the user of this standard to establish appro-
3.6 Mold, to form plastic, castable, and rammed samples.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.7 Molds, to form slag pellets.
3.8 Abrasive Saws, to cut brick samples.
2. Significance and Use
3.9 Supply of Granular Refractory Backup Material.
2.1 This test method outlines a procedure which, when
appropriate evaluation methods are added, can be useful in the
3.10 Safety Equipment.
development of new products or in the selection of products to
4. Test Specimens
be used in contact with a particular slag composition.
4.1 Test specimens should be 9 in. (228 mm) long and have
2.2 A gradient exists through the test specimens that is
a cross section as shown in Fig. 1.The 1.75 by 9 in. (44 by 228
controlled by the thermal conductivity of the specimens and
mm) face should be an original surface.
backup material. The slag is constantly renewed so that a high
rate of corrosion is maintained. The flow of the slag can cause
4.2 One or more reference samples should be included in
mechanical erosion of materials. The tilt and rotational speed
each test run.
of the furnace will affect the amount of mechanical erosion.
5. Assembly
2.3 Use caution in interpreting results when materials of
vastly different types are included in a single run. Care must be 5.1 Six test specimens, as described in Section 4, shall
taken to prevent oxidation of carbon-containing materials
constitute a test lining. This lining can be assembled around a
during heat up; failure to do so can result in highly erratic
hexagonal shaped mandrel with 1.75 in. (44 mm) faces and
taped or steel-banded for subsequent handling. The lining
should be positioned midway in the 18 in. (456 mm) length of
1
This test method is under the jurisdiction of ASTM Committee C08 on
the shell. Any suitable granular or refractory castable material
Refractories and is the direct responsibility of Subcommittee C08.04 on Chemical
may be installed behind the test lining.
Behaviors.
Current edition approved Oct. 1, 2011. Published November 2011. Originally
5.2 It has been found convenient to use precast plugs to fill
approved in 1977. Last previous edition approved in 2011 as C874 – 11. DOI:
the two ends of the shell. These should be 4.5 in. (114 mm)
10.1520/C0874-11A.
2
thick by 10 in. (254 mm) in diameter to fit inside the shell. The
Cash, P., “Measuring Refractory Resistance to Hot Slags,” Ceramic Age,
August 1966, pp. 20–29. hexagonal holes in the plug should match those of the test
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C874 − 11a
NOTE 1—Dimensions are in inches.
NOTE 2—Six cuts are needed for complete lining.
SI Equivalents
in. (mm)
1.75 (44)
2.5 (64)
3
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C874–11 Designation: C874 – 11a
Standard Test Method for
1
Rotary Slag Testing of Refractory Materials
This standard is issued under the fixed designation C874; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method describes a procedure for comparing the behavior of refractories to the action of molten slag in a rotating
test furnace. A reference material should be included in each test and run for comparison. No numeric results are obtained from
this test method. Numeric evaluation of test results is the responsibility of the test operator. The test and equipment are patterned
2
after a method developed by Valley Dolomite Corporation .
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, 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.
2. Significance and Use
2.1 This test method outlines a procedure which, when appropriate evaluation methods are added, can be useful in the
development of new products or in the selection of products to be used in contact with a particular slag composition.
2.2 A gradient exists through the test specimens that is controlled by the thermal conductivity of the specimens and backup
material. The slag is constantly renewed so that a high rate of corrosion is maintained. The flow of the slag can cause mechanical
erosion of materials. The tilt and rotational speed of the furnace will affect the amount of mechanical erosion.
2.3 Use caution in interpreting results when materials of vastly different types are included in a single run. Care must be taken
to prevent oxidation of carbon-containing materials during heat up; failure to do so can result in highly erratic results.Areference
refractory specimen, or specimens, should be used for comparison.
3. Apparatus
3.1 Furnace, consisting of a cylindrical shell, typically 18 in. (456 mm) long and with a 10 in. (254 mm) inside diameter,
mounted on rollers and motor driven. Both the rotation and tilt of the furnace along its long axis should allow for adjustment.
3.2 Burner—A gas-oxygen torch capable of heating the furnace to 3200°F (1760°C). The burner should be equipped with
flowmeters to monitor gas and oxygen flows.
3.3 Optical Pyrometer.
3.4 Tools, for (1) a means of feeding slag pellets into furnace, and (2) to assemble and dismantle the furnace.
3.5 Gas Atmosphere Analyzer and Sampling Equipment.
3.6 Mold, to form plastic, castable, and rammed samples.
3.7 Molds, to form slag pellets.
3.8 Abrasive Saws, to cut brick samples.
3.9 Supply of Granular Refractory Backup Material.
3.10 Safety Equipment.
4. Test Specimens
4.1 Test specimens should be 9 in. (228 mm) long and have a cross section as shown in Fig. 1. The 1.75 by 9 in. (44 by 228
mm) face should be an original surface.
4.2 One or more reference samples should be included in each test run.
1
This test method is under the jurisdiction of ASTM Committee C08 on Refractories and is the direct responsibility of Subcommittee C08.04 on Chemical Behaviors.
Current edition approved Feb.Oct. 1, 2011. Published MarchNovember 2011. Originally approved in 1977. Last previous edition approved in 20092011 as C874–99
(Reapproved 2009). C874 – 11. DOI: 10.1520/C0874-11A.
2
Cash, P., “ Measuring Refractory Resistance to Hot Slags,” Ceramic Age, August 1966, pp. 20–29.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C874 – 11a
NOTE 1—Dimensions are in inches.
NOTE 2—Six cuts are needed for complete lining.
SI Equivalents
in. (mm)
1.75 (44)
2.5 (64)
3.0 (76)
4.5 (114)
FIG. 1 Cross Section of Cut Brick Samples for Lining the Rotary Slag-Test Furnace
5. Assembly
5.1 Six test specimens, as described in Section 4, shall constitute a test lining. This lining can be assembled around a hexagonal
shaped mandrel with 1.75 in. (44 mm) faces and taped or steel-banded for
...
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