ASTM D2013 PDF

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ASTM D_自然科学_专业资料。Designation: D – 07 Standard Practice for Preparing Coal Samples for Analysis1 This standard. ASTM. American Society for Testing and Materials. Btu/lb. British thermal units per pound cal/g (ISO ), or m/s (18 inches/s) (ASTM D). ASTM D/DM Standard Practice for Preparing Coal Samples for Analysis. standard by ASTM International, 09/01/ View all product details.

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Active view current version of standard. Do not produce riffle portions which are smaller in mass than stated in Table 1 of this standard.

Also, a reserve sample may be desired in case a check analysis or test is required. Two slotted cones are locked together and rotated on a vertical shaft so that on each revolution the common slot operating intercepts the falling stream of coal and collects an increment.

ASTM D – Standard Method of Preparing Coal Sample for Analysis – Free Download PDF

Apparatus reduced in particle size by crushing or grinding without significant change. Last previous edition approved in as D — Referenced Documents purchase separately The documents listed below adtm referenced within the subject standard but are not provided as part of the asrm. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

Originally published as D – 62 T. Please fill this form, we will try to respond as soon as possible.

In addition, a method to determine the percent air dried moisture loss of the sample is provided. However, some tests may require a sample of different mass or top size. Divide individual Sda2 values Column 9 by average Sda2 Column Since this practice does not produce a numerical result, determination of bias is not applicable.

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If it does not?

ASTM D 2013 – 1986 Standard Method of Preparing Coal Sample for Analysis

Thus, the difference 0. D – 86 Reapproved Standard Method of Preparing Coal Samples for Analysis 1 This stlll’ldard is issued under the fixed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year oflast revision. Pass the coal through the riffle from a feed scoop, v2013 bucket, or riffle pan having a lip or opening the full width of the riffle.

However, some tests may require a sample of different mass or top size. Account for that information when making the composite. Select an approximate desired mass for the composite sample. The wheel should be rotated at a speed so that the particles fall gently from top to bottom of the container, mixing the sample thoroughly.

Last previous edition D “. Hard d20113 or chilled iron plate with asfm, sledge, or hand bar may be used for preliminary crushing of any large lumps in the sample before feeding into the crusher.

Determine whether sample masses have been decreased, and by what percentage, prior to arrival of samples at the laboratory. Criminal penalties may apply for noncompliance. Practice D provide instructions for reducing and dividing the gross or divided sample, by on-line or off-line processes, or both, to a top size and mass suitable to the performance of testing.

ASTM D / DM – 18 Standard Practice for Preparing Coal Samples for Analysis

d20013 Adhere to the minimum weights required in Table 1. Add the individual lot or sub-lot masses to? Link to Active This link will always route to the current Active version of the standard.

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Another consideration is that since there are no provisions in this standard for dividing samples of top size larger than ? Historical Version s – view previous versions of standard.

Descriptions of Terms Specific to Tltis Standard 3. It is preferable that feed chutes and enclosed riffles be used.

Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Therefore, carefully select the standard to be used to collect the gross sample. Taking these and other issues into account atm to the requirement that preparation of composites be performed with strict adherence to the procedures which are described below and are summarized in Table 2.

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.

Practice D provides instructions for reducing and dividing the gross or divided sample, by on-line or off-line processes, or both, to a top size and mass suitable to the performance of testing. Each cutter is designed to extract increments from the feed and to discharge these into the hollow shaft.

A typical enclosed riffle is shown in Fig. Typical mechanical sample dividers are shown in Fig. The oven shall be capable of concerned parties.