BS EN ISO 10058-2-2008 Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) - Part 2 Wet chemical analysis (ISO n10058-2 2.pdf

1、BS EN ISO10058-2:2008ICS 73.080; 81.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDChemical analysisof magnesite anddolomite refractoryproducts (alternativeto the X-rayfluorescence method)Part 2: Wet chemical analysis (ISO10058-2:2008)Licensed Copy: Wang Bin

2、 ISO/EXCHANGE CHINA STANDARDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 January2009 BSI 2009ISBN 978 0 580 57834 2Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 10058-2:

3、2008National forewordThis British Standard is the UK implementation of EN ISO10058-2:2008. It partially supersedes BS EN ISO 10058:1996.Together with BS EN ISO 10058-1 and BS EN ISO 10058-3, itsupersedes BS EN ISO 10058:1996 which is withdrawn.The UK participation in its preparation was entrusted to

4、 TechnicalCommittee RPI/1, Refractory products and materials.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Comp

5、liance with a British Standard cannot confer immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10058-2December 2008ICS 73.080 Supersedes EN ISO 10058:1996 English Ver

6、sionChemical analysis of magnesite and dolomite refractoryproducts (alternative to the X-ray fluorescence method) - Part 2:Wet chemical analysis (ISO 10058-2:2008)Analyse chimique des produits de magnsie et de dolomie(mthode alternative la mthode par fluorescence derayons X) - Partie 2: Mthodes dana

7、lyse chimique par voiehumide (ISO 10058-2:2008)Chemische Analyse von feuerfesten Erzeugnissen ausMagnesit und Dolomit (Alternative zurRntgenfluoreszenzanalyse) - Teil 2: NasschemischeAnalyse (ISO 10058-2:2008)This European Standard was approved by CEN on 1 November 2008.CEN members are bound to comp

8、ly with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Managemen

9、t Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theoffi

10、cial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slove

11、nia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN natio

12、nal Members.Ref. No. EN ISO 10058-2:2008: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008EN ISO 10058-2:2008 (E) 3 Foreword This document (EN ISO 10058-2:2008) has been prepared by Technical Committee ISO/TC 33 “Refractories“

13、 in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2009, and co

14、nflicting national standards shall be withdrawn at the latest by June 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This docum

15、ent supersedes EN ISO 10058:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,

16、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10058-2:2008 has been approved by CEN as a EN ISO 10058-2:2008 without any

17、 modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008ISO 10058-2:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Determination of silicon(IV) oxide .2 4 Determinati

18、on of aluminium oxide 4 5 Determination of iron(III) oxide 6 6 Determination of titanium(IV) oxide.7 7 Determination of manganese(II) oxide 8 8 Determination of calcium oxide .9 9 Determination of magnesium oxide 10 10 Determination of sodium oxide by flame photometry .11 11 Determination of potassi

19、um oxide by flame spectrophotometry.13 12 Determination of chromium(III) oxide14 13 Determination of zirconium oxide by xylenol orange absorption spectroscopy .17 14 Determination of phosphorus(V) oxide by molybdenum blue method .18 15 Test report19 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDA

20、RDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008ISO 10058-2:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International

21、Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, al

22、so take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committ

23、ees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the poss

24、ibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10058-2 was prepared by Technical Committee ISO/TC 33, Refractories. This first edition of ISO 10058-2, together with ISO 10058

25、1 and ISO 10058-3, cancels and replaces ISO 10058:1992 which has been technically revised to include the increasing use of flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods as well some improvements in the wet chemical ana

26、lyses procedures developed in Japan. ISO 10058 consists of the following parts, under the general title Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method): Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica Par

27、t 2: Wet chemical analysis Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008INTERNATIONAL STANDARD IS

28、O 10058-2:2008(E) ISO 2008 All rights reserved 1Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) Part 2: Wet chemical analysis 1 Scope This part of ISO 10058 specifies traditional (“wet process”) methods for the chemical analysis of magne

29、site and dolomite refractory products and raw materials. It is applicable to components within the ranges of determination given in Table 1. Table 1 Range of determination (percentage by mass) Component Range Component Range SiO20,1 to 10 MgO 30 to 99,9 Al2O30,05 to 10 Na2O 0,01 to 1 Fe2O30,01 to 10

30、 K2O 0,01 to 1 TiO20,01 to 1 Cr2O30,01 to 3 MnO 0,01 to 1 ZrO20,01 to 1 CaO 0,01 to 60 P2O50,01 to 5 LOI 0,01 to 60 NOTE These values are after the loss on ignition (LOI) has been taken into account. 2 Normative references The following referenced documents are indispensable for the application of t

31、his document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 10058-1:2008, Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence metho

32、d) Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica ISO 10058-3:2008, Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled atomic

33、 plasma emission spectrometry (ICP-AES) ISO 26845, Chemical analysis of refractories General requirements for wet chemical analysis, atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARD

34、S, 20/05/2009 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008ISO 10058-2:2008(E) 2 ISO 2008 All rights reserved3 Determination of silicon(IV) oxide 3.1 General The determination of silicon(IV) oxide is carried out using one of the following methods. a) Combined use of the dehydration or the

35、coagulation and molybdenum blue methods This method is applied to samples consisting of more than 4 % by mass of silicon(IV) oxide (see 3.2). b) Molybdenum blue method This method is applied to samples consisting of less than 10 % by mass of silicon(IV) oxide (see 3.3). 3.2 Combined use of the coagu

36、lation and molybdenum blue methods 3.2.1 Principle An aliquot portion of the stock solution (S1) (see ISO 10058-1:2008, Annex A), after pH adjustment, is treated with ammonium molybdate and the silicomolybdate is reduced to yield molybdenum blue, the absorbance of which is measured. The sum of this

37、residual silicon(IV) oxide in solution plus the mass of silicon (IV) oxide (m1 m2) calculated in accordance with ISO 10058-1:2008, 8.2.2.3.3, gives the total silicon(IV) oxide content. 3.2.2 Procedure This determination should be commenced with little delay after the stock solution (S1) is prepared,

38、 as prolonged standing may allow polymerization of silica to occur leading to low results. Transfer 10 ml of stock solution (S1) (see ISO 10058-1:2008, Annex A) to a 100 ml plastic beaker, add 2 ml of hydrofluoric acid (1+9) and mix with a plastic rod. Allow to stand for 10 min and add 50 ml of bori

39、c acid solution. Add 2 ml of ammonium molybdate solution while mixing at a temperature of 25 C and allow to stand for 10 min. Add 5 ml of L (+)-tartaric acid solution while stirring and, after 1 min, add 2 ml of L (+)-ascorbic acid solution. Transfer the solution to a 100 ml volumetric flask, dilute

40、 to the mark with water, mix and allow to stand for 60 min. Measure the absorbance of the solution in a 10 mm cell at a wavelength of 650 nm using water as reference. 3.2.3 Plotting the calibration graph Transfer 0 ml, 2 ml, 4 ml, 6 ml, 8 ml and 10 ml aliquot portions 0 mg to 0,4 mg as silicon(IV) o

41、xide of dilute standard silicon(IV) oxide solution (SiO20,04 mg/ml) to separate 100 ml plastic beakers and add to each 10 ml of blank solution (B1) (see ISO 10058-1:2008, Annex A). Treat these solutions and measure the absorbance as given in 3.2.2, and plot the absorbances against the amounts of sil

42、icon(IV) oxide. Prepare the calibration graph by adjusting the curve so that it passes through the point of origin. 3.2.4 Blank test Using the blank solution (B1) (see ISO 10058-1:2008, Annex A), carry out the procedure given in 3.2.2. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 20/05/200

43、9 01:48, Uncontrolled Copy, (c) BSIBS EN ISO 10058-2:2008ISO 10058-2:2008(E) ISO 2008 All rights reserved 33.2.5 Calculation Calculate the mass fraction of silicon(IV) oxide, 2SiO,w expressed as a percentage, using Equation (1), with the absorbances obtained by the procedures given in 3.2.2 and 3.2.

44、4 and the calibration graph plotted in 3.2.3. ()()212 sbSiO25010100mm mmwm+= (1) where m1is the mass from ISO 10058-1:2008, 8.2.2.3.3, in grams (g); m2is the mass from ISO 10058-12008, 8.2.2.3.3, in grams (g); msis the mass of silicon(IV) oxide in the aliquot portion of stock solution (S1) as applic

45、able, in grams (g); mbis the mass of silicon(IV) oxide in the aliquot portion of blank solution (B1) as applicable, in grams (g); m is the mass of the test portion calculated in accordance with ISO 10058-1:2008, 8.2.2.3.1, in grams (g). 3.3 Molybdenum blue method 3.3.1 Principle An aliquot portion o

46、f the stock solution (S1) (see ISO 10058-1:2008, Annex A), after pH adjustment, is treated with ammonium molybdate and the silicomolybdate is reduced to yield molybdenum blue, the absorbance of which is measured. 3.3.2 Procedure Transfer precisely an aliquot portion of stock solution (S1) (see ISO 1

47、0058-1:2008, Annex A) to two 100 ml plastic beakers and add to each an aliquot portion of blank solution (B1) (see ISO 10058-1:2008, Annex A). Add to each 2 ml of hydrofluoric acid (1+9), mix with a plastics rod and allow to stand for 10 min. Add 50 ml of boric acid solution, dilute to 80 ml with wa

48、ter. Add 5 ml of ammonium molybdate solution while mixing at a temperature of 25 C and allow to stand for 10 min. Add 5 ml of L (+)-tartaric acid solution while stirring and, after 1 min, add to 10 ml of L (+)-ascorbic acid solution. Transfer each solution to a 200 ml volumetric flask, dilute to the

49、 mark with water and mix. Allow to stand for 60 min and measure the absorbance of the solutions in a 10 mm cell at a wavelength of 650 nm against water as a reference. Average the two measurements. NOTE Aliquot volumes of stock solution (S1) and blank solution (B1) corresponding to the mass fraction of silicon(IV) oxide in the sample are shown in Table 2. If the difference of the two absorbance measurements is greater than 0,005, repeat the procedure given in 3.3.2 and ISO 10058-1:2008, 8.2.3.3. When measurements of the