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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Remember me for one month. These gases d46 called volatiles and consist of tarry vapours and non-condensible gases. The value for the fixed carbon is calculated as follows: Container made from wire cloth 3.
Price variations may also apply where standard quality indicators are not met.
The figures in per cent indicate the reduction in size suffered during the test. The testing methods for by-products are derived from standard analytical procedures for liquid chemicals and gaseous fuels.
An offtake pipe leads through a condenser which collects the tars and pyroligneous acids produced from the thermal decomposition of the wood. Values are state ins SI units when inch-pound units are not used in practice. Search book title Enter keywords for book title search.
Chapter 8. Quality control of charcoal and by-products
Standards for charcoal testing are derived from fuels such as coal or coke and, in f346 cases, are modified to apply specifically to charcoal analysis. The procedure can be facilitated by using a machine for the shaking. Print 1 2 3 4 5 page sstarting from page current page.
Dry the sample at a temperature of C not higher to reduce moisture content to zero. 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.
The most common set is: The most common test used in viscosity determination of pyroligneous acid is the Engler-scale. Place the crucible in a wire triangle firmly on a tripod and heat the bottom gently with a Bunsen burner, placed at a distance of not less than 6 cm from the crucible.
Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
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.
Register for a trial account. The yields of charcoal and liquid products can be easily measured and the effect of carbonising temperature studied. Preparation of charcoal sample. No further reproductions authorized.
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Accurately weigh grammes of dried sample and put it on screen No. The extensive data on the carbonisation of the various species of eucalypts quoted by 20 were obtained in this way and show how comparative studies of this type can serve as a guide in choice of raw material. Then weigh the residue remaining on each screen.
Historical Version s – view previous versions of aatm. The dd346 stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Crush or grind sample and weigh accurately 3 grammes in a platinum or porcelain crucible with a lid.
If you like to setup s346 quick demo, let us know at support madcad. These results are combined with the sieve analysis of the fine material excluded from the astmm test to give a total evaluation of the charcoal’s asm. You currently cannot view this content. Release pressure and discharge the combustion residues by several rinsings with water into a beaker the contents of the calorimeter must be completely transferred.
The most important of these test methods which apply to charcoal testing are listed on the following page.
A correction can be made for moisture content to express ash on a moisture free basis. According to estimated ash content accurately weigh three or five grammes in a platinum or porcelain crucible with lid. Continue drying and reweigh at one-hour intervals until the loss is not more than 0.
The conditions in the small retort are not very similar to continuous large-scale retort systems. The loss of weight will be calculated as a percentage of the initial wet weight.
The acceptability of the product will be determined by it’s compliance with the values laid down in the specification. This indicates that all volatile matter has been driven off. Fixed carbon content is an important parameter in steel making d34 since this is the agent which reduces the iron ore to metallic iron and limits which must be met are often specified. The drum is rotated at 24 rpm for one hour total 1, rev.
Enter your personal account email astmm to request a password reset: Small-scale charcoal producers for economic reasons, engage the services of an existing laboratory, either through a university or privately.
For analysis, a set of standard screens with different mesh sizes are used. The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. Historical Version s – view previous versions of standard Translated Version s: The electronic file may not be reproduced in any way.
Used for charcoal briquettes. By heating charcoal with exclusion of air oxygen volatile matter and gases are expelled. Check weight and temperatures at intervals until weight loss is under 0.