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 Status: Withdrawn · Replaced by: ASTM D Buy this standard.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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If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Apparatus and Materials 6.
Sieves shall be calibrated at reasonable intervals in accordance with the procedure described in Speci? Weigh to the nearest 0. Current edition approved June 29, Users of this standard are expressly advised awtm determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Precision xstm Bias Summary of Test Method 4. Your comments are invited either for revision of this standard qstm for additional standards and should be addressed to ASTM Headquarters. One supplier tested 31 samples of aatm single grade of carbon and obtained an average hardness of The value of H2 gives the upper limit of hardness, if we ignore the effects of humidity.
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 of the same grade of carbon.
Fit the cover plate with a cork stopper which extends from 3. The extra sieves, in this case, serve only to form a stack which?
Pour the screened axtm weighed sample into the hardness pan and add the steel balls. Use additional material obtained as in 9. 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.
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? ashm
ASTM D3802 – 16
Discard the fractions above the larger and below the smaller nominal particle size. Humidity effects during d38802 given test will largely cancel out if no change in humidity occurs between 9. Place the hardness test sieve on top of the receiving pan. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
ASTM D – 10 Standard Test Method for Ball-Pan Hardness of Activated Carbon
Table 1 lists satm hardness test sieve corresponding to each minimum nominal sieve. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. BoxGastonia, NChas been found to be satisfactory. The adhesion of material to sieves, brushes, etc. A number in parentheses indicates the year of last reapproval.
A superscript epsilon e indicates an asym change since the last revision or reapproval. Obtain at least mL of material within the nominal mesh size range. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the asstm of regulatory limitations prior to use.
Tyler Model SB, available from W. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Adjust the bottom stops to give a clearance of approximately 1. Shake with the hammer operating for 10 min 6 10 s.