欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ASTM D293 D293M-2018 Standard Test Method for the Sieve Analysis of Coke.pdf

    • 资源ID:511517       资源大小:56.42KB        全文页数:2页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ASTM D293 D293M-2018 Standard Test Method for the Sieve Analysis of Coke.pdf

    1、Designation: D293/D293M 18Standard Test Method for theSieve Analysis of Coke1This standard is issued under the fixed designation D293/D293M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in par

    2、entheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method describes the separation of a cokesample into defined size fractions and expressing said fractionsas a mass weight percent of the g

    3、ross sample.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in nonconfo

    4、rmancewith the standard.1.3 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 appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory

    5、limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organiza

    6、tion TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D346/D346M Practice for Collection and Preparation ofCoke Samples for Laboratory AnalysisD4621 Guide for Quality Management in an OrganizationThat Samples or Tests Coal and Coke (Withdrawn 2010)3E11 Specificat

    7、ion for Woven Wire Test Sieve Cloth and TestSievesE323 Specification for Perforated-Plate Sieves for TestingPurposes3. Significance and Use3.1 This test method determines the size distribution of cokefor conformance to specifications of percentages retained ondesignated screen sizes.4. Apparatus4.1

    8、SievesUse square-hole sieves conforming to Specifi-cation E11. Where sieves larger than 100 mm 4 in. arerequired, the specifications for same shall be by mutualagreement between interested parties. Permissible variations insieve openings and spacings shall be in accordance withSpecification E11.4.1.

    9、1 For complete characterization of the size range of acoke sample, the number and size of the selected sieves shouldbe such that no more than 25 % of the gross sample mass orweight will be retained on any given sieve.4.1.2 For coke 38.1 mm 112 in. and larger in size, sievesof heavy double-crimped wi

    10、re and square or rectangular frameswith 0.56 m2to 0.84 m26 ft2to9ft2 of sieve area aresatisfactory. For coke smaller than 38.1 mm 112 in. in size,sieves of double-crimped wire and square or circular frameswith 0.19 m2to 0.37 m22 ft2to4ft2 of sieve area are usuallymore convenient.4.2 Weighing Balance

    11、, preferably of the platform type,having a sensitivity of 0.025 kg 0.05 lb or better, at ratedcapacity and with graduations such that 0.05 kg 0.1 lb can beread without interpolation.5. Test Sample5.1 The test sample shall be taken in accordance withPractice D346/D346M.6. Procedure6.1 Starting with t

    12、he sieve having the largest opening, sievethe sample of coke in quantities small enough to preventplugging and clogging of the sieve.6.1.1 Hand-fit each piece of coke retained on the 38.1 mm112 in. or larger sieve. A piece is considered undersize if, insome position and without forcing, it passes th

    13、e sieve opening.6.1.2 Shake vigorously on each succeeding sieve cokepieces passing the 38.1 mm 112 in. sieve. This shaking maybe performed manually or mechanically provided mechanicalshaking yields results equivalent to manual shaking. Note that1This test method is under the jurisdiction of ASTM Com

    14、mittee D05 on Coaland Coke and is the direct responsibility of Subcommittee D05.15 on MetallurgicalProperties of Coal and Coke.Current edition approved Sept. 1, 2018. Published September 2018. Originallyapproved in 1928. Last previous edition approved in 2010 as D293 93 (2010).DOI: 10.1520/D0293_D02

    15、93M-18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard

    16、 is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principl

    17、es for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1the objectives of shaking, either manual or mechanical, are toplace all of the naturally occurring pieces of a given size rangeon the appro

    18、priate sieve and to avoid degradation of thenaturally occurring sizes.6.2 Record to the nearest 0.05 kg 0.1 lb the mass weightof coke retained on each sieve and that which passes thesmallest sieve used. For routine testing, the sum of all thesize-fraction masses weights may be taken as the total mas

    19、sweight of coke tested.6.2.1 Samples containing pieces retained on 50 mm 2 in.sieves and larger need not be dried. However, when a higherdegree of accuracy is desired, dry the gross sample to less than1 % moisture and accurately weigh before sieving. Dry allsamples of coke containing only pieces whi

    20、ch pass a 50 mm2 in. sieve to less than 1 % moisture before testing.7. Report7.1 Report the masses weights of the size fractions as apercentage of the mass weight of the gross sample. Calculatepercentage to the nearest 0.1 %. Record the results startingwith the fraction of largest sieve size, which

    21、may be shown forseparate fractions or cumulatively.7.2 For those tests in which the gross sample is weighedbefore sieving, the sum of the masses or weights of all sizefractions should equal the measured gross mass weight. Incases in which the cumulative mass weight of size fractionsdiffers from the

    22、initial gross mass weight by 0.5 % or less ofthe gross mass weight, adjustment can be made in the massweight of the size fraction passing the smallest sieve size.With careful procedure, this difference should not exceed0.5 %.8. Precision and Bias8.1 RepeatabilityThe precision of this test method isb

    23、eing investigated by a task group. At this time the values havenot been determined.8.2 ReproducibilityNo precision statement has been de-veloped for this test method because of the impracticality ofobtaining, transporting, and handling representative splits ofthe materials in the quantities that wou

    24、ld be needed to establishthe precision statement.8.3 BiasThe lack of a reference material precludes a biasstatement.9. Keywords9.1 breakage; coke; degradation; incrementsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin

    25、 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 entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and mus

    26、t 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 standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the

    27、responsible 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 Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700

    28、, 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 182


    注意事项

    本文(ASTM D293 D293M-2018 Standard Test Method for the Sieve Analysis of Coke.pdf)为本站会员(proposalcash356)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开