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 Status: Withdrawn · Replaced by: ASTM D Buy this standard.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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ASTM D3802 – 16

At the xstm 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?

Summary of Test Method 4. 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.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Obtain at least mL of material within the nominal mesh size range.

This standard is subject to asym at any time by the responsible technical committee and must be reviewed every? Tyler Model SB, available from W. Weigh to the nearest 0. The extra sieves, in this case, serve only to form a stack which?


Standard – Standard Test Method for Ball-Pan Hardness of Activated Carbon ASTM D –

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. A number in parentheses indicates the year of last reapproval. 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. One supplier tested 31 samples of a single grade of carbon and obtained an average hardness of Precision and Bias Humidity effects during a given test will largely cancel out if no change in humidity occurs between 9.

Table 1 lists the 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. Adjust the bottom stops to give a clearance of approximately 1. BoxGastonia, NChas been found to be satisfactory.

Current edition approved June 29, 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. Place the hardness test sieve d38022 top of the receiving pan. Shake with the hammer operating for 10 min 6 10 s.


Standard Test Method for Ball-Pan Hardness of Activated Carbon

The adhesion of material to sieves, brushes, etc. Discard the fractions above the larger and below asrm smaller nominal particle size. Pour the screened and weighed sample into the hardness pan and add the steel balls. Your comments will receive zstm consideration at a meeting of the responsible technical committee, which you may attend.

Use additional material obtained as in 9. Sieves shall be calibrated at reasonable intervals in accordance with the procedure described in Speci? Apparatus and Materials 6.

The value of H2 gives the upper limit of hardness, if we ignore the effects of humidity. Fit the cover plate with a cork stopper which extends from 3.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.