EN 993-17-1998 en Methods of Test for Dense Shaped Refractory Products - Part 17 Determination of Bulk Density of Granular Materials by the Mercury Method with Vacuum《密封成型耐火制品检验方法 .pdf

1、STD-BSI BS EN 993-L-ENGL 1944 Lb24bb9 0775572 T29 m BRITISH STANDARD Methods of test for dense shaped refractory products - Part 17: Determination of bulk density of granular materials by the mercury method with vacuum The European Standard EN 993.171998 has the status of a British Standard ICs 81.0

2、80 BS EN 993-17:1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN 993-17-ENGL 1979 Lb29bb9 0775573 9b5 W been prepared under the direcion of the Sector AmdNo. Date Committee for Materiais and Chemicals, was published under the authority of the Standards Commit

3、tee and comes int effect on 15 May 1999 O BSI O51999 ISBN O 680 32321 8 BS EN 993-171999 Textaffected National foreword “his British Standard is the English language version of EN 993-17 1998. It supersedes BS 19023.61984, which is withdrawn. The UK participation in its preparation was entrusted by

4、Technical Committee WV1, Refractory products and materials, to Subcommittee RPVV1, Sampling and physical testing of refractory products, which has the responsibility to: - aid enquirem to understand the text; - present to the responsible European commiittee any enquiries on the - monitor related int

5、ernational and European developments and promulgate interpretation, or propods for change, and keep the UK interests informed them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretaq. Cross-references The British Standards which implement in

6、ternational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standads Electronic Catalogue. A British Standard does not purport to in

7、clude ali the nec- provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN t

8、itle page, pages 2 to 7, and a back cover. STD-BSI BS EN 773-17-ENGL 1797 Lb24bb 077557Li BTL = EUROPEAN STANDARD NORME EUR0PEE”E EUROP- NORM EN 993-17 December 1998 ICs Descriptors: rehctory materiais, shaped refractories, dense shaped refractory products, tests, determination, measurements, densit

9、y (masdvolume), bulk density, granular materiais, pycnometric analysis, mercury, procedures English version Methods of test for dense shaped refractory products - Part 17: Dekrrrimtion of bulk density of granular makrials by the rnercwy method with vacuum Mthodes dessai pour produits rhdaires Partie

10、 17 Dtermination de ia masse volumique apparenk des matriaux en grains par la mthode au mercure sous vicie Frfverfhren fr dichte geformte feuerfesk Teil 17 Bestimmung der Rohdichte an kmigem Gut nach dem Quecksilber-Ve- erfahren unter Vakuum faconns denses - Erzeugnisse- This European Standard was a

11、pproved by CEN on 28 November 1998. CEN members are bound to comply with the CENKENELEC Internai Regulaions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Uptodate lists and bibliograpuca references concerning such national s

12、tandards may be obtained on application to the Central Secretariat 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 own language and notified

13、 to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, Fi-ance, Germany, Greece, Iceland, Ireland, My, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Uni

14、ted Kingdom. m European Committee for Standaraion Comit Europen de Normalisation Europisches Komitee fur Normung Centrai Secretariat: rue de Stassart 36, B-1060 Brussels 1998 CEN Ail rights of exploitation in any form and by any means reserved worldwide for CEN national Meinbers. Ref. No. 993-171998

15、 E Page 2 EN 993-17:1998 Foreword This European Standard has been prepared by Technical Committee CEN/“C 187, Refractory products and materiais, 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 tex

16、t or by endorsement, at the latest by June 1999, and conflicting national standards shall be withdrawn at the iam by June 1999. EN 993, Methods of test for dense shaped refractory products, consists of 18 parts: - Part 1: Determination of buEk density, apparent porosity and true porosity; - Part 2 D

17、etermination of true density; - Part 3: Test methods for arbomcontaining remtories; - Part 4: Determination of permeability to gases; - Part 6 Determination of modulus of rupture at ambient temperature; - Part 7 Determination of mduus of rupture at elk?vated tempemtures; - Part 8: Determination of r

18、efmctoriness- Under-load, - Part 9 Determination of meep in cmpression; - Part 10 Determination of permamt change in dimensions on heating; - Part 11: Determination of resistance to thermae - Part 12: Determination of pymmetric cone - Part 13: SpecifTation for pymmetric mfme cones for labomtoy use;

19、- Part 14: Determination of utermal conductivity by the ho - Part 15 Determination of thermal conductivity - Part 16 Determination of resistarrre to sulfuric - Part 17 Determination of gmnuiar materials by the nwtmry method with vacuum; - Part 18: Determination of bulk density of gmnuiar muterials b

20、y the water method wi vacuum. - Part 5 Determination Of cold Crushing Stmth, shock (ENV); equivalent (wWtoriness); by the hot-wire (pamuel) method; acids; dens.ity of According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implem

21、ent this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netheriands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Foreword 1 Scope 2 Normative references 3 Definitions 4 principle 5

22、 APP- 6 lst samples 7 Procedure 8 Calculation of resuits 9 Testreport AnnexA (informative) Bibiioguapb Page 2 3 3 3 3 3 3 3 6 7 7 O BSI O51999 1 scope This European Standard specifies the determination of the buik density of granular refractory materiais (grain buik density) hawig a grain sue greate

23、r than 2 nun, by the mercury method with vacuum. NOTE 1 This method is intended as the reference method because of its reproducibility and simplicity in use. However, mercury is known to be a hazardous substance, and therefore the determination of bulk density of granular materiais can be carried ou

24、t according to prEN 993-18. This standard, which defines a method by water with vacuum, is recommended for ail routine purposes. Newnheless, depending on the nature of the material tested, the two methods can give different results. NOTE 2 Under test conditions, applying a mercury pressure of 26,5 k

25、Pa. round pores with a diameter 2 55 pm and elongated pores with a width 2 27,5 pm are penetrated by mercuiy. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places i

26、n the text and the publications listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to

27、applies. IS0 383, Laboratory glassware - Interchaqeable conicd ground joints. IS0 565, Test sieves - Metul wire clah, peorated metal phte and electroformed sheet - Nominal sizes of openings. 3 Definitions For the purposes of this European Standard, the following definitions apply. 3.1 bulk density o

28、f a granular material grain bulk density l .- View on X (enlarged) 01,5 -Ca I Figure 1 - Vacuum pycnometer E C O BSI O51999 Page 5 EN 993-171998 12 II 13 _- Y 1 Dish for mercury Stopcock 2 Pycnometer lower part Glass seal with holes (diameter O BSI 05-1999 Page 6 EN 993-171998 Temperature “C 15 Fit

29、the pycnometer to the extraction bush (lo), close stopcock (16) and evacuate the mercury reservoir (il). Open stopcock (2) and remove the mercury from the pycnometer while under a pressure not exceeding 3 o00 Pa Close stopcock (2), remove the pycnometer and, by gently shaking, remove any mercury adh

30、ering to the test sample. Open stopcock (5) and allow the pycnometer to return to atmospheric pressure. Remove the test sample from the pycnometer. Determine the amount of mercury remaining in the test sample, by weighing it and finding the difference from its on mass. If the mass of mercury remaini

31、ng in the test sample is over 5 % of the original mass of the sample, this amount, expressed as a percentage by mass, shall be stated in the test report. NOTE 2 The stopcocks (2) and (5) should be closed in the order stated and while the pycnometer vessel is still connected to the vacuum system Clos

32、ing stopcock (5) after the apparatus has been disconnected from the vacuum system, or reopening stopcock (5) and thereby subjecting the contents to atmospheric pressure, will give an increased impregnation of the grain porosity with mercury and thus a high erroneous result. This situation can also o

33、ccur if repeated evacuaon, filling and release of the system to atmospheric pressure is carried out, and therefore this should also be avoided. Density g/cm3 13,559 8 Calculation of results 8.1 Calculation of volume of test sample (VR) if the wem carried out in accordance with 7.2.2 and 7.2.3 were m

34、ade within %2 OC (and therefore a constant mercury density can be assumed), the volume VR of the kst sample is given, in millilitres, by the equation: 16 17 where 13,556 13,554 mG mp m. is the mass, in grams, of the pycnometer nIled with mercury only (see 7.2.2); is the mass, in grams, of the test s

35、ample (see 6.3); is the mass, in grams, of the evacuated pycnometer Nled with test sample and mercwy (see 7.2.3); is the densi, in grams per cubic centitnetre, of mercury if calibration and measurement were carried out (see 7.1) at a temperature which does not vary by more than $ OC. I I P 18 19 20

36、if the weighmgs in accordance with 7.2.2 and 7.2.3 were made at temperatures varying by more than “C (and thus with Merent mercury densities), the volume VR of the test sample is given, in millilitres, by the equation: (2) mG - mL -mT - mL - mP v, = Pi P2 where 13,551 13,549 13,546 m mp is the mass,

37、 in grams, of the pycnometer filled with mercury only (see 7.2.2); is the mass, in grams, of the test sample (see 6.3); is the mass, in grams, of the evacuated pycnometer flied with test sample and mercury (see 7.2.3); is the mass, in grams, of the empty pycnometer (see 7.2.1); is the densi is the d

38、ensity, in grams per cubic centimetre, of mercury when determining the flied mass of the pycnometer containing both test sample and mercq. m pi p2 21 22 13,544 13,541 23 24 13,539 13,536 25 26 13,534 13,532 28 29 I 27 1 13,529 I 13,527 13,524 NOTE The density of mercury as a function of temperature

39、is given in Table 1. O BSI 051999 STD-BSI BS EN 993-17-ENGL 1999 lb24bb9 0775580 OT5 = Page 7 EN 993-17:1998 8.2 Calculation of bu is the volume, in millilitres, of the test sample (see 8.1). Report the result to three significant figures. 9 kst report The test report shali include the following inf

40、ormation: a) a reference to this European standard; b) the designation of the materiai tested (manufacturer, type, batch number, etc.); c) the range of grain size, in millimetres, and the mass of the test samples, in giruns; d) the bulk density (both individuai values and the arithmetic mean for the

41、 material), in grams per cubic centimetre; e) the mass of mercury remaining in the test sample, expressed as a percentage by mass, if greater than5%3 f) the name of the testing establishment; g) the date of the test. O BSI 05-1999 BS EN 993-17: 1999 BSI 389 ChiswickHigh Road London w4 4AL BSI - Brit

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