ASTM D Standard Test Method for Ball-Pan Hardness of Activated Carbon. Standard Test Method for Ball-Pan Hardness of Activated Carbon. Status: Withdrawn · Replaced by: ASTM D Buy this standard. Price: SEK. PDF. D()活性碳的球盘硬度的试验方法 – Designation: D Referenced Documents ASTM Standards: B 19 Speci?cation for.
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None of these has proved completely satisfactory for all applications, and all have been questioned by ASTM Committee D on Activated Carbon as tests for establishing degradation resistance. The value of H2 gives the upper limit of hardness, if we ignore the effects of humidity.
Fit the cover c3802 with a cork stopper which extends from 3. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
d3820 Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. If you feel that your comments have not received a fair ast you should make your views known to the ASTM Committee on Standards, at the address shown below.
Pour the screened and weighed sample into the hardness pan and add the steel balls. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Standard Test Method for Ball-Pan Hardness of Activated Carbon
At the end of this period, the amount of particle size degradation is determined by measuring the quantity of carbon, by weight, which is retained on a sieve whose openings are closest to one half the openings of the sieve that de? Current edition approved June 29, Apparatus and Materials 6. Place the hardness test sieve on top of the receiving pan.
Shake with the hammer operating for 10 min 6 10 s.
One supplier tested 31 samples of a single grade of carbon and obtained an average hardness of Weigh to the nearest 0. Precision and Bias Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or astmm phonefaxor service astm.
The adhesion of material to sieves, brushes, etc. Use additional adtm obtained as in 9. Humidity effects during a given test will largely cancel out if no change in humidity occurs between 9. 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. Sieves shall be calibrated at reasonable d38802 in accordance with the procedure described in Speci?
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Table 1 lists the hardness test sieve corresponding ast each minimum nominal sieve. Discard the fractions above the larger and below the smaller nominal particle size.
ASTM D – 16 – Standard Test Method for Ball-Pan Hardness of Activated Carbon
Obtain at least mL of material within the nominal mesh size range. Conceding the fact that the test does not actually measure in-service resistance to degradation, it can be used to establish the comparability of lots ostensibly sstm the same grade of carbon. Tyler Model SB, available from W. Your comments will receive asfm consideration at a meeting of the responsible technical committee, which you may attend.
BoxGastonia, NChas been found to be satisfactory. A number in parentheses indicates the year of last reapproval. The extra sieves, in this case, serve only to form a stack which?
Summary of Test Method 4. Adjust the bottom stops to give a clearance of approximately 1.