ImageVerifierCode 换一换
格式:PDF , 页数:2 ,大小:57.42KB ,
资源ID:530793      下载积分:5000 积分
快捷下载
登录下载
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)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-530793.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 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。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM E2293-2003(2013) Standard Practice for Drying of Metal Bearing Ores Concentrates and Related Metallurgical Materials for the Determination of Mercury《汞测定用含金属矿 精矿和相关冶金材料干燥的标准实施.pdf)为本站会员(eastlab115)主动上传,麦多课文库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库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ASTM E2293-2003(2013) Standard Practice for Drying of Metal Bearing Ores Concentrates and Related Metallurgical Materials for the Determination of Mercury《汞测定用含金属矿 精矿和相关冶金材料干燥的标准实施.pdf

1、Designation: E2293 03 (Reapproved 2013)Standard Practice forDrying of Metal Bearing Ores, Concentrates, and RelatedMetallurgical Materials for the Determination of Mercury1This standard is issued under the fixed designation E2293; the number immediately following the designation indicates the year o

2、foriginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the sample drying step for thedetermi

3、nation of mercury in ores, concentrates, and relatedmetallurgical materials.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its

4、 use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E50 Practices for Apparatus, Reagents, and Safety Consid-erations for Ch

5、emical Analysis of Metals, Ores, andRelated MaterialsE135 Terminology Relating to Analytical Chemistry forMetals, Ores, and Related MaterialsE877 Practice for Sampling and Sample Preparation of IronOres and Related Materials for Determination of Chemi-cal Composition and Physical PropertiesE882 Guid

6、e for Accountability and Quality Control in theChemical Analysis Laboratory2.2 Other Documents:3ISO 9599 Copper, Lead, and Zinc Sulfide ConcentratesDe-termination of Hygroscopic Moisture in the AnalysisSample-Gravimetric MethodISO 12743 Copper, Lead, and Zinc Sulfide ConcentratesSampling Procedures

7、for the Determination of Metal andMoisture ContentISO 10251 Copper, Lead, and Zinc Sulfide ConcentratesDetermination of Mass Loss of Bulk Material on Drying3. Terminology3.1 DefinitionsFor definitions of terms used in thisPractice, refer to Terminology E135.4. Summary of Practice4.1 Test samples for

8、 be used for mercury determination aredried at 60 C.5. Significance and Use5.1 This practice is primarily to be used to dry samples forthe determination of mercury test portions, and it should not beused for the determination of sample moisture content. Mostsample preparation methods prescribe dryin

9、g the samples at105 C, until a constant mass is obtained. The moisture contentis determined as the percentage mass loss on drying. However,since mercury can volatize from samples at the normallyutilized temperature, samples that are to be used for mercurydetermination shall be dried at 60 C (see Pra

10、ctice E877,ISO 9599, ISO 12743, and ISO 10251).5.2 It is assumed that all who use this practice will betrained analysts capable of performing skillfully and safely. Itis expected that work will be performed in a properly equippedlaboratory under appropriate quality control practices such asthose des

11、cribed in Guide E882.6. Apparatus6.1 Drying Oven, ventilated with forced circulation of air,regulated at a temperature of 60 C 6 2 C.6.2 Top-Loading Balance, minimum precision of 0.01 %.6.3 Drying Trays, capable of holding at least a 1 kg sample,spread no thicker than 3 cm deep.7. Hazards7.1 For pre

12、cautions to be observed in this practice, refer toPractices E50.1This practice is under the jurisdiction of ASTM Committee E01 on AnalyticalChemistry for Metals, Ores, and Related Materials and is the direct responsibility ofSubcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materi

13、als.Current edition approved Nov. 1, 2013. Published December 2013. Originallyapproved in 2003. Last previous edition approved in 2008 as E2293 03(2008)1.DOI: 10.1520/E2293-03R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.

14、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.Copyright ASTM Inter

15、national, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17.2 Mercury can form vapors at low temperatures. Mercuryvapors can be hazardous to your health. Perform method inventilated areas or wear special health protection equipment.8. Procedure8.1 Remove a represe

16、ntative laboratory sample, 500 gminimum, from the gross sample.8.2 Place the laboratory sample into a drying tray and levelto approximately 3 cm.8.3 Weigh to within 0.01 g on the top loading balance.8.4 Place the tray and test portion into the drying oven anddry at 60 C for at least 16 h.NOTE 1Once

17、the drying period has commenced, no other wet samplesshould be placed into the same drying oven.8.5 Remove the tray and laboratory sample from the ovenand weigh. Dry the tray and laboratory sample for an additional4 h. Remove from the oven and weigh again. Repeat this stepas necessary until two succ

18、essive determinations of the mass ofthe tray plus dried laboratory sample agree within 0.2 %percent relative. (See ISO 9599, ISO 12743, and ISO 10251.)NOTE 2Any crusts or cakes that form on the laboratory sample afterinitial drying should be broken up to enable easier release of moisture.8.6 Prepare

19、 the dried test sample for the determination ofmercury according to the appropriate technique.9. Keywords9.1 drying; mercury; moisture; sample preparationASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.

20、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 must be reviewed ev

21、ery 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 theresponsible tech

22、nical 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, West Conshohoc

23、ken, 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 ASTM website (www.astm.org/COPYRIGHT/).E2293 03 (2013)2

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