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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Prepare sample as above. Various countries have developed their own standard methods for quality control of solid fuels and these are applied f346 some modifications to the testing of charcoal.
The procedure can be facilitated by using a machine for the shaking.
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.
Search book title Enter keywords for book title search. No items in cart. This practice also provides an analysis sample of coke from the gross or divided sample. 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.
Small retorts of this type are conveniently heated by electricity which allows close control of temperature.
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Crushing is done manually in a porcelain mortar with a pestle. However, they have great value for comparison between various raw materials since the behaviour of known materials can be compared with new type raw materials or the effect of changing carbonisation temperature can be studied in a comparative way. No further reproductions authorized. Enter your account email address to request a password reset: Register for a trial account.
When the ml calibration mark has been reached stop and weigh the charcoal fines.
Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
Grinding is not recommended because the heat generated would already drive off part of the volatiles. This practice may be used to provide a representative sample of the coke from which it is collected.
Continue procedure as described for raw material above. This practice also provides an analysis sample of coke from the gross or divided sample. It is not necessary to detail all the standards which are used but merely to indicate a typical system. Container made from wire cloth 3. You currently cannot view this content. Put the hot crucible into a desiccator with calcium chloride as a desiccant, until the sample has cooled.
A capacity of about litres is adequate.
ASTM D346/D346M – 11
After minutes, open the gas adjusting screw and the air control of the Bunsen burner to full capacity and continue heating until the small flame above the pinhole of the lid has ceased. Such modifications must be mentioned in the charcoal analysis report. Historical Version s – view previous versions of standard Translated Version s: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
When the required temperature is reached the retort is allowed to cool to room wstm and the yield of charcoal, tars and pyroligneous acid measured by weighing. The yields of charcoal and liquid products can be easily measured and the effect of carbonising temperature studied. Pour the charcoal sample as received from the plant, or storage a little at a time into a ml calibrated cylinder.
After rinsing the d3346 several times with distilled water, oven dry it and weigh. A simple apparatus for these tests is shown in Fig. Note down the different weights in percentage of the total initial weight in the following order: This is to prevent the finer charcoal cushioning the effect of rumbling on the coarse material during the test.
Non-condensable gases may be collected and analysed d436 more usually are simply burned to waste. Method for charcoal and charcoal briquettes. Accurately weight one gramme of the powdered sample in a platinum preferable or porcelain crucible with a lid with the following dimensions: This indicates that all volatile matter has been driven off.
The laboratory staff must be familiar with satm different standards used for quality control of charcoal and by-products. Print 1 2 3 4 5 page sstarting from page current page. For charcoal and charcoal briquettes.
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The most common set is: The effect of tumbling on the charcoal is tested as follows. After ignition, the calorimeter has to be shaken for about half an hour. The asstm to access the electronic files of ASTM Standards is for purposes of viewing for individual use only.
Accurately weigh grammes of dried sample and put it on screen No. Values are state ins SI units when inch-pound units are not used in practice.
Shake the whole screen set for two minutes. The buying specification of large industrial users and others will refer to various parameters measured in the process of quality d3446. Enter your personal account email address to request a password reset: In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise.
Used for charcoal briquettes. Continue drying and reweigh at one-hour intervals until the loss is not more than 0.