1、Designation: C 706 02Standard Specification forLimestone for Animal Feed Use1This standard is issued under the fixed designation C 706; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parenthe
2、ses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers limestone supplied for use as amineral supplement in animal feeds.NOTE 1The calcium needed for animal nutrition is customarily
3、supplied by limestone. Such limestone must be sufficiently fine to blendwith mixed feeds and yet be free from excessive dusting.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish
4、appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:C 25 Test Methods for Chemical Analysis of Limestone,Quicklime, and Hydrated Lime2C 50 Methods for Sampling, Inspection, Packaging, andMarking of
5、 Lime and Limestone Products2C 51 Terminology Relating to Lime and Limestone2C 110 Test Methods for Physical Testing of Quicklime,Hydrated Lime, and Limestone2E 11 Specification for Wire-Cloth and Sieves for TestingPurposes33. Terminology3.1 Definitions of terms applying to this specification appear
6、in Terminology C 51.4. General Requirements4.1 The product must be suitable for animal feeding.5. Chemical Requirements5.1 Limestone, as identified on feed labels, shall conform tothe chemical requirements given in Table 1.6. Physical Requirements6.1 Sieve analysis and other physical requirements sh
7、all bespecified by the purchaser.7. Test Methods7.1 Chemical AnalysisUnless otherwise agreed upon be-tween the purchaser and the manufacturer, the chemical analy-sis of the limestone shall be conducted in accordance with TestMethods C 25.7.2 Particle SizeUnless otherwise agreed upon betweenthe purch
8、aser and the manufacturer, the sieve analysis of thematerial shall be determined in accordance with Test MethodsC 110.7.2.1 ProcedureIf the entire sample is not to be dried,obtain lesser portions by riffling or quartering. Dry at between115 to 120C to a constant mass and cool to room temperature.Obt
9、ain a 90 to 120-g dry sample by riffling or quartering. If thematerial tends to cake, break up the agglomerates with a softrubber pestle. Quantitatively transfer the weighed sample to an8-in. diameter standard sieve or set of sieves (for example,Nos. 10, 20, 40, 60, 80, and 100 or other appropriate
10、combi-nation conforming to Specification E 11). Conduct the sieveanalysis in accordance with Test Methods C 110.8. Sampling, Inspection, etc.8.1 The sampling, inspection, rejection, retesting, packag-ing, and marking shall be conducted in accordance withMethods C 50.9. Keywords9.1 animal; feed; lime
11、stone; mineral; supplement1This specification is under the jurisdiction of ASTM Committee C07 on Limeand is the direct responsibility of Subcommittee C07.03 on Industrial Uses.Current edition approved Dec. 10, 2002. Published January 2003. Originallyapproved in 1972. Last previous edition approved i
12、n 1998 as C 706 98.2Annual Book of ASTM Standards, Vol 04.01.3Annual Book of ASTM Standards, Vol 14.02.TABLE 1 Chemical RequirementsLimestoneClasses(See C 51)Calcium,min,percent(as CaCO3)Magnesium,max,percent(asMgCO3)Magnesium,min,percent(as MgCO3)Moisture,max,percentHigh Calcium 95 5 . 0.5Magnesian
13、 60 35A5 0.5Dolomitic 49 46A35 0.5Ground Limestone 82BB0.5AThe high magnesium content of these materials usually limits their use tospecial-purpose feeds.BAs specified by the purchaser.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
14、ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are
15、 entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standar
16、dsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committ
17、ee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C706022
