The grain stability of calcined petroleum coke determines the resistance to breakdown of +4 mm particles used in the manufacture of carbon anodes for use . Designation: D/DM − Standard Practice for. Collection and Preparation of Coke Samples for Laboratory Analysis1 This standard is issued under the. ASTM D Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis.
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According to estimated ash content accurately weigh three or five grammes in a platinum or porcelain crucible with lid. Therefore, the lower qstm per cent figure the better the charcoal. The test would be done by contract with a commercial testing authority, perhaps a university. This practice also provides an analysis sample of coke from the gross or divided sample. The most common set is: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
After cooling, the contents of the beaker are poured through a weighed glass filter which collects the barium-sulphate precipitate.
This practice may be used to provide a representative sample of asgm coke from which it is collected. After rinsing the filter d36 times with distilled water, oven dry it and weigh.
Fixed carbon content is an important parameter in steel making charcoal since this is the agent which reduces the iron ore to metallic iron and limits which must be met are often specified.
The effect of tumbling on the charcoal is tested as follows. Such modifications must be mentioned in the charcoal analysis report. When the ml calibration mark has been reached stop and weigh the charcoal fines. Testing must follow standardized methods in all cases to ensure that the results can be compared and the analysis repeated.
Because of the variability of coke and the wide variety of sampling equipment, caution must be exercised in all stages of sampling, from system specifications and equipment procurement to equipment acceptance testing and actually taking the final sample.
Enter your account email address to request a password reset: There were no books found for the applied search filters. The electronic file may not be reproduced in any way. It is not necessary to detail all the standards which are used but merely to indicate a typical system. A correction can be made for moisture content to express ash on a moisture free basis.
Link to Active This link will always route to the current Active version of the standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Continue drying and reweigh at one-hour intervals until the loss is not more than 0. The retort should be heated gently with the burner flame to allow the moisture to be driven off and avoid overheating of the charge at any point. For charcoal and charcoal briquettes. The testing methods for by-products are derived from standard analytical procedures for liquid chemicals and gaseous fuels. Check weight and temperatures at intervals until weight loss is under 0.
The conditions in the small retort are not very similar to continuous large-scale retort systems. ASTM D usually modified for charcoal. No further reproductions authorized. Note down the different weights in percentage of the total initial weight in the following order: A white precipitate of barium sulphate will immediately appear. Small-scale charcoal producers for economic reasons, engage the services of an existing laboratory, either through a university or privately.
Calculate barium sulphate content by weight difference. This practice may be used to provide a representative sample of the coke from which it is collected.
Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
The procedure can be facilitated by using a d436 for the shaking. Preparation of charcoal sample. Values are state ins SI units when inch-pound units are not used in practice. Register for a trial account. If you like d3346 setup a quick demo, let us know at support madcad. A capacity of about litres is adequate. These results are combined with the sieve analysis of the fine material excluded from the tumbler test to give a total evaluation of the charcoal’s quality.
Combining values from the two systems may result in non-conformance with the standard. For analysis, a set of standard screens with different mesh sizes are used. The weight obtained multiplied by 10 gives the bulk density per litre.
The new charcoal producer quickly learns what can be done by himself and which part of the laboratory work can be contracted. The container is made of copper or stainless steel and constitutes in effect a small closed retort. The drum is rotated at 24 rpm for one hour total asym, rev.
Used for charcoal briquettes. 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.
Asm most common test used in viscosity determination of pyroligneous acid is the Engler-scale. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
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The acceptability of the product will be determined by it’s compliance with the values laid down in the specification. Continue procedure as described for raw material above. The analysis samples can be used to determine the value of the coke represented, its ability to meet specifications, as well as for other purposes.
By heating charcoal with exclusion of air oxygen volatile matter and gases are astj.