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1、BS EN ISO 10058-2:2008 ICS 73.080; 81.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) Part 2: Wet chemical analysis (ISO 10058-2:2008) Licensed C
2、opy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 BSI 2009 ISBN 978 0 580 57834 2 Amendments/corrigenda issued since publicat
3、ion DateComments BS EN ISO 10058-2:2008 National foreword This British Standard is the UK implementation of EN ISO 10058-2:2008. It partially supersedes BS EN ISO 10058:1996. Together with BS EN ISO 10058-1 and BS EN ISO 10058-3, it supersedes BS EN ISO 10058:1996 which is withdrawn. The UK particip
4、ation in its preparation was entrusted to Technical Committee RPI/1, Refractory products and materials. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users ar
5、e responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10058
6、-2 December 2008 ICS 73.080Supersedes EN ISO 10058:1996 English Version Chemical analysis of magnesite and dolomite refractory products (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 alt
7、ernative la mthode par fluorescence de rayons X) - Partie 2: Mthodes danalyse chimique par voie humide (ISO 10058-2:2008) Chemische Analyse von feuerfesten Erzeugnissen aus Magnesit und Dolomit (Alternative zur Rntgenfluoreszenzanalyse) - Teil 2: Nasschemische Analyse (ISO 10058-2:2008) This Europea
8、n Standard was approved by CEN on 1 November 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conc
9、erning such national standards may be obtained on application to the CEN Management 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 translation under the responsibility of a CEN member into its o
10、wn language and notified to the CEN Management Centre has the same status as the official 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, Lithu
11、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008
12、 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10058-2:2008: E Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 EN ISO 10058-2:2008 (E) 3 F
13、oreword This document (EN ISO 10058-2:2008) has been prepared by Technical Committee ISO/TC 33 “Refractories“ 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 nation
14、al standard, either by publication of an identical text or by endorsement, at the latest by June 2009, and conflicting 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 right
15、s. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document 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 Stand
16、ard: 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, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
17、Endorsement notice The text of ISO 10058-2:2008 has been approved by CEN as a EN ISO 10058-2:2008 without any modification. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 ISO 10058-2:2008(E) ISO 2008 All rights
18、reserved iii Contents Page Foreword iv 1 Scope1 2 Normative references1 3 Determination of silicon(IV) oxide .2 4 Determination of aluminium oxide 4 5 Determination of iron(III) oxide 6 6 Determination of titanium(IV) oxide.7 7 Determination of manganese(II) oxide8 8 Determination of calcium oxide.9
19、 9 Determination of magnesium oxide 10 10 Determination of sodium oxide by flame photometry.11 11 Determination of potassium oxide by flame spectrophotometry.13 12 Determination of chromium(III) oxide14 13 Determination of zirconium oxide by xylenol orange absorption spectroscopy .17 14 Determinatio
20、n of phosphorus(V) oxide by molybdenum blue method .18 15 Test report19 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 ISO 10058-2:2008(E) iv ISO 2008 All rights reserved Foreword ISO (the International Organiza
21、tion for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established
22、has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. In
23、ternational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publi
24、cation as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility 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 r
25、ights. ISO 10058-2 was prepared by Technical Committee ISO/TC 33, Refractories. This first edition of ISO 10058-2, together with ISO 10058-1 and ISO 10058-3, cancels and replaces ISO 10058:1992 which has been technically revised to include the increasing use of flame atomic absorption spectrophotome
26、try (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods as well some improvements in the wet chemical analyses procedures developed in Japan. ISO 10058 consists of the following parts, under the general title Chemical analysis of magnesite and dolomite refractory pro
27、ducts (alternative to the X-ray fluorescence method): Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica Part 2: Wet chemical analysis Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) Licensed
28、 Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 INTERNATIONAL STANDARD ISO 10058-2:2008(E) ISO 2008 All rights reserved 1 Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluoresc
29、ence method) Part 2: Wet chemical analysis 1 Scope This part of ISO 10058 specifies traditional (“wet process”) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials. It is applicable to components within the ranges of determination given in Table 1. Table
30、 1 Range of determination (percentage by mass) Component Range Component Range SiO2 0,1 to 10 MgO 30 to 99,9 Al2O3 0,05 to 10 Na2O 0,01 to 1 Fe2O3 0,01 to 10 K2O 0,01 to 1 TiO2 0,01 to 1 Cr2O3 0,01 to 3 MnO 0,01 to 1 ZrO2 0,01 to 1 CaO 0,01 to 60 P2O5 0,01 to 5 LOI 0,01 to 60 NOTE These values are a
31、fter the loss on ignition (LOI) has been taken into account. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (
32、including any amendments) applies. ISO 10058-1:2008, 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 ISO 10058-3:2008, Chemical analysis of magnesite and do
33、lomite refractory products (alternative to the X-ray fluorescence method) Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled atomic plasma emission spectrometry (ICP-AES) ISO 26845, Chemical analysis of refractories General requirements for wet chemical analysis, atomic
34、 absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 ISO 10058-2:2008(E) 2 ISO 2008 All rights reserved 3 De
35、termination 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 coagulation and molybdenum blue methods This method is applied to samples consisting of more than 4 % by mass of silicon(IV
36、) 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 coagulation and molybdenum blue methods 3.2.1 Principle An aliquot portion of the stock solution (S1) (see ISO 10058-1:2008, Ann
37、ex 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 residual silicon(IV) oxide in solution plus the mass of silicon (IV) oxide (m1 m2) calculated in accordance with ISO 10058-
38、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, as prolonged standing may allow polymerization of silica to occur leading to low results. Transfer 10 ml of stock solution
39、 (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 boric acid solution. Add 2 ml of ammonium molybdate solution while mixing at a temperature of 25 C and allow to stand for 10 mi
40、n. 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 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 wav
41、elength 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) oxide of dilute standard silicon(IV) oxide solution (SiO2 0,04 mg/ml) to separate 100 ml plastic beakers and add to each 10
42、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 silicon(IV) oxide. Prepare the calibration graph by adjusting the curve so that it passes through the point of origin. 3.2.4
43、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: London South Bank University, South Bank University, 02/02/2009 04:36, Uncontrolled Copy, (c) BSI BS EN ISO 10058-2:2008 ISO 10058-2:2008(E) ISO 2008 All rights reserved 3
44、 3.2.5 Calculation Calculate the mass fraction of silicon(IV) oxide, 2 SiO ,w expressed as a percentage, using Equation (1), with the absorbances obtained by the procedures given in 3.2.2 and 3.2.4 and the calibration graph plotted in 3.2.3. ()() 2 12sb SiO 250 10 100 mmmm w m + = (1) where m1 is th
45、e mass from ISO 10058-1:2008, 8.2.2.3.3, in grams (g); m2 is the mass from ISO 10058-12008, 8.2.2.3.3, in grams (g); ms is the mass of silicon(IV) oxide in the aliquot portion of stock solution (S1) as applicable, in grams (g); mb is the mass of silicon(IV) oxide in the aliquot portion of blank solu
46、tion (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 of the stock solution (S1) (see ISO 10058-1:2008, Annex A), after pH adjustment, is treated
47、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 10058-1:2008, Annex A) to two 100 ml plastic beakers and add to each an aliquot portion of b
48、lank 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 water. Add 5 ml of ammonium molybdate solution while mixing at a temperature of 25 C and allo
49、w 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 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(
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