1、BS EN 15704:2008ICS 65.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDLiming materials Determinationof the breakdownof granulatedcalcium and calcium/magnesium carbonatesunder the influence ofwaterThis British Standardwas published under theauthority of the S
2、tandardsPolicy and StrategyCommittee on 31 January2009 BSI 2009ISBN 978 0 580 58989 8Amendments/corrigenda issued since publicationDate CommentsBS EN 15704:2008National forewordThis British Standard is the UK implementation of EN 15704:2008.The UK participation in its preparation was entrusted to Te
3、chnicalCommittee CII/37, Fertilisers and related chemicals.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.Compli
4、ance with a British Standard cannot confer immunityfrom legal obligations.BS EN 15704:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15704December 2008ICS 65.080English VersionLiming materials - Determination of the breakdown of granulatedcalcium and calcium/magnesium carbonates under the inf
5、luenceof waterAmendements minraux basiques - Dtermination dudlitage leau de carbonates de calcium et carbonates decalcium/magnsium granulsCalcium-/Magnesium-Bodenverbesserungsmittel -Bestimmung des Zerfalls von granulierten Calcium- undCalcium-/Magnesiumcarbonaten unter WassereinwirkungThis European
6、 Standard was approved by CEN on 15 November 2008.CEN members are bound to comply 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 concer
7、ning such nationalstandards 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 translationunder the responsibility of a CEN member into its own la
8、nguage and notified to the CEN Management Centre has the same status as theofficial 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, Lu
9、xembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, 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 righ
10、ts of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15704:2008: EBS EN 15704:2008EN 15704:2008 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Apparatus .5 6 Reagents .5 7 Procedure .5 8 C
11、alculation 6 9 Precision .6 10 Test report 7 Bibliography 8 BS EN 15704:2008EN 15704:2008 (E) 3 Foreword This document (EN 15704:2008) has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials”, the secretariat of which is held by DIN. This European Standard shall be give
12、n the status of a national 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
13、 subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgiu
14、m, 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. BS EN 15704:2008EN 1
15、5704:2008 (E) 4 1 Scope This European Standard specifies a method for the determination of the break down of granulated calcium and calcium /magnesium carbonates under the influence of water. 2 Normative references The following referenced documents are indispensable for the application of this docu
16、ment. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1482-2, Fertilizers and liming materials Sampling and sample preparation Part 2: Sample preparation EN 12048, Solid fertilizers and
17、 liming materials Determination of moisture content Gravimetric method by drying at (105+/-2) C (ISO 8190:1992 modified) EN 12944-1:1999, Fertilizers and liming materials Vocabulary Part 1: General terms EN 12944-2:1999, Fertilizers and liming materials Vocabulary Part 2: Terms relating to fertilize
18、rs EN 12944-3:2001, Fertilizers and liming materials Vocabulary Part 3: Terms relating to liming materials EN 12948, Liming materials Determination of size distribution by dry and wet sieving EN ISO 3696:1995, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) ISO 331
19、0-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12944-1:1999, EN 12944-2:1999 and EN 12944-3:2001 apply. 4 Principle The sample is added to water. The mixture
20、is stirred and then screened through a series of test sieves. NOTE The method is based upon a method described in the German Methods manual II (1985) 1. BS EN 15704:2008EN 15704:2008 (E) 5 5 Apparatus 5.1 Drying oven, capable of maintaining a temperature of 105 C 5 C; 5.2 Magnetic stirrer, with adju
21、stable rotation, 600 rpm; 5.3 Magnetic stirring rod, 64 mm long ( 5 mm), with a central ring and a diameter of 8 mm ( 1 mm); 5.4 Test sieves, In accordance with ISO 3310-1 with apertures of 100 m and 315 m; NOTE Additional sieve sizes can be added to meet national regulations or the requirements of
22、the consumers. 5.5 Glass beaker, Capacity 2 000 ml and with a diameter of approximately 130 mm and a height of 200 mm. 6 Reagents 6.1 Water, conforming to EN ISO 3696:1995, grade 3. 7 Procedure 7.1 Sampling and sample preparation Sampling is not part of the method specified in this document. A recom
23、mended sampling method is given in EN 1482-1 2. Sample preparation shall be carried out in accordance with EN 1482-2. 7.2 Determination of the moisture content Determine the moisture content of the sample in accordance with EN 12048 and record the result as mass before drying (m1) and mass after dry
24、ing (m2). 7.3 Breakdown of the granules in water Weigh about 100 g of the as received test sample (m3) to the nearest 0,1 g. Measure 1 000 ml of water (6.1) into the glass beaker (5.5). Add the magnetic stirrer rod (5.3) and start the magnetic stirrer (5.2). Adjust the magnetic stirrer to 600 rpm. A
25、dd the test portion into the outside area of the stirred water, and not into the middle vortex in the beaker. Stir for 10 min, maintaining the stirrer at 600 rpm. It is important that the magnetic stirrer avoids any milling action on the test portion. Assemble the sieves (5.4) with the largest apert
26、ure size on the top. Completely wash the contents of the beaker onto the top sieve. Wash the residues on each of the sieves in accordance with the wet sieving method described in EN 12948. Dry (5.1) the residue on each sieve separately at 105 C to a constant mass, and weigh to an accuracy of 0,1 g (
27、m4) after cooling down. BS EN 15704:2008EN 15704:2008 (E) 6 8 Calculation The mass fraction passing through the respective sieve(s), wS in percent, is calculated according to the following Equation: 3241S 100100 mm mmw (1) where m1 is the mass in grams of the sample before drying, m2 is the mass in
28、grams of the dried sample, m3 is the mass in grams of the test portion, m4 is the mass in grams of the dried residue remaining on the sieve(s). The mass of the dried residues (m4) on the sieves shall be used to express the test results in accordance with the requirements of National Fertilizer Regul
29、ations for liming materials. 9 Precision 9.1 Inter-laboratory test An inter-laboratory test has been carried out in 2006 with 12 participating laboratories. Repeatability and reproducibility were calculated according to ISO 5725-1:1994 3. The values derived from this inter-laboratory test may not be
30、 applicable to materials and sample matrices other than those given in Table 1. 9.2 Repeatability The absolute difference between two independent single test results, obtained with the same method on identical test material in the same laboratory by the same operator using the same equipment within
31、a short interval of time, will not be more than 5 % of the cases exceed the values of r given in Table 1. 9.3 Reproducibility The absolute difference between two single test results, obtained with the same method on identical test material in different laboratories by different operators using diffe
32、rent equipment, will not be more than 5 % of the cases exceed the values of R given in Table 1. BS EN 15704:2008EN 15704:2008 (E) 7 Table 1 Mean values, repeatability and reproducibility limits Material and fineness before granulation Particle size x % passing r R r % relative R % relative Dolomite
33、100 m 98,118 1,1551 1,5313 1,1773 1,5607 315 m 99,550 0,3341 2,3743 0,3357 2,3850 Chalk fine 100 m 86,943 1,4084 2,3110 1,6199 2,6581 315 m 90,454 7,2218 6,4734 7,9840 7,1566 Chalk coarse 100 m 50,219 5,6911 20,7561 11,3325 41,3310 315 m 54,112 7,7781 24,6821 14,3742 45,6131 10 Test report The test
34、report shall contain at least the following information: a) all data necessary for the complete identification of the sample; b) date of the sampling and the sampling procedure (if known); c) reference to this European Standard; d) test results and the units in which the results have been expressed;
35、 e) confirmation of the sieve sizes used in the test; f) date of the completion of the test; g) all operating details not specified in this document, or regarded as optional, together with details of any incidents occurred when performing the method which might have influenced the test result(s). BS
36、 EN 15704:2008EN 15704:2008 (E) 8 Bibliography 1 Methodenbuch Band II (1995): Die Untersuchung von Dngemitteln, 4. Auflage, Verband Deutscher Landwirtschaftlicher Untersuchungs- und Forschungsanstalten (VDLUFA), Kapitel 6.6, Seiten 1-2: Bestimmung des Zerfalls von granulierten kohlensauren Kalken un
37、ter Feuchtigkeitseinfluss (Methods Manual II (1995): Analysis of Fertilizers, Association of German Agricultural Experimental and Research Stations, Chapter 6.6, Pages 1-2: Determination of the disaggregation of granulated calcium carbonates (CaCO3, granulated) under the influence of moisture) 2 EN
38、1482-1, Fertilizers and liming materials Sampling and sample preparation Part 1: Sampling 3 ISO 5725-1:1994, Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions BS EN 15704:2008This page has been intentionally left blank BS EN15704:2008BSI
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