BS 4140-10-1986 Methods of test for aluminium oxide - Determination of untamped density《氧化铝的试验方法 未夯实密度的测定》.pdf

1、BRITISH STANDARD BS 4140-10: 1986 ISO 903:1976 Methods of test for Aluminium oxide Part 10: Determination of untamped density ISO title: Aluminium oxide primarily used for the production of aluminium Determination of untamped density NOTEIt is recommended that this Part be read in conjunction with t

2、he general information given in BS 4140-0 “General introduction” which is issued separately. UDC 546.623 31:620.1BS4140-10:1986 This British Standard, having been prepared under the directionof the Chemicals Standards Committee, was published under the authorityofthe Board of BSI andcomes into effec

3、t on 31January 1986 BSI 10-1999 The committees responsible forthis British Standard are shown in Part 0 The following BSI references relate to the work on this standard: Committee reference CIC/24 Draft for comment 85/52365 DC ISBN 0 580 14925 0 Amendments issued since publication Amd. No. Date of i

4、ssue CommentsBS4140-10:1986 BSI 10-1999 i Contents Page National foreword ii 1 Scope and field of application 1 2 References 1 3 Principle 1 4 Apparatus 1 5 Procedure 1 6 Expression of results 1 7 Test report 1 Annex ISO publications relating to aluminium oxide primarily used for the production of a

5、luminium 2 Publications referred to Inside back coverBS4140-10:1986 ii BSI 10-1999 National foreword This Part of BS 4140 is identical with ISO 903:1976 “Aluminium oxide primarily used for the production of aluminium Determination of untamped density” published by the International Organization for

6、Standardization (ISO). This method supersedes clause 10 of Addendum No. 1 (1970) to BS 4140:1967. Parts 8 to 10 of this standard collectively supersede Addendum No. 1 (1970) to BS4140:1967, which is withdrawn. Terminology and conventions. The text of the International Standard has been approved as s

7、uitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. In British Standards it is current practice to use the symbol “L” for litre (anditssubmult

8、iples) rather than “l”. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. NOTEThe other International Standards listed in the Annex are for information only. Their correspondence with British Standards is summarized in BS 4140-

9、0 “General information”. This standard prescribes methods of test only, and should not be used or quoted as a specification defining limits of purity. Reference to this Part should indicate that the method of test used complies with BS 4140-10:1986. A British Standard does not purport to include all

10、 the necessary 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. Cross-references International Standard Corresponding British Standard BS 4140 Methods of t

11、est for aluminium oxide ISO 802:1976 Part 1:1986 Preparation and storage of test samples (Identical) ISO 2927:1973 Part 20:1980 Sampling (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and2, an inside back cover and a back cover. This s

12、tandard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4140-10:1986 BSI 10-1999 1 1 Scope and field of application This International Standard specifies a method for the determination of the un

13、tamped density of aluminium oxide primarily used for the production of aluminium. 2 References ISO 802, Aluminium oxide primarily used for the production of aluminium Preparation and storage of test samples. ISO 2927, Aluminium oxide primarily used for the production of aluminium Sampling. 3 Princip

14、le Determination of the mass of a known volume of aluminium oxide collected after allowing it to fall freely into a stationary container, avoiding vibration. Expression of the untamped density by division of this mass by the mass of an equal volume of water. 4 Apparatus 4.1 Funnel, of diameter 10 cm

15、 and angle 60 , with a stem of length 8 mm and aperture diameter of6mm. 4.2 Cylindrical container, of capacity approximately200 ml, with a ratio of internal diameter to internal length 1/6 approximately. 4.3 Suitable stand and ring support, to allow the funnel (4.1) to be set to a predetermined heig

16、ht above the top level of the cylindrical container(4.2). 5 Procedure 5.1 Sample Use the crude sample (see 3.2 of ISO 802). 5.2 Determination Set the cylindrical container (4.2) on a flat base. Adjust the funnel (4.1) so that its axis coincides approximately with that of the cylinder, with the tip o

17、f the funnel at a height of 10 cm above the cylindrical container top. Feed the aluminium oxide into the centre of the funnel at about 40 mm above the funnel so as not to communicate any vibration to the apparatus, at about 20 to 60 g/min. If blocking occurs at the stem, facilitate the passage of th

18、e aluminium oxide with a piece of wire, taking care not to vibrate the cylindrical container. Stop the feed when the aluminium oxide has formed a cone above the top level of the cylindrical container and is spilling over. Remove the cone of surplus aluminium oxide by gently drawing a straight edge a

19、cross the top rim of the cylindrical container, without communicating any vibration to the latter. Weigh the cylindrical container and its contents. 6 Expression of results The untamped density is given by the formula where m 0is the mass, in grams, of the empty cylindrical container (4.2); m 1is th

20、e mass, in grams, of the cylindrical container full of distilled water; m 2is the mass, in grams, of the cylindrical container full of aluminium oxide; If the cylindrical container used has a capacity of exactly 200 ml, the formula for the calculation of untamped density becomes It will usually be m

21、ore convenient to use one particular cylindrical container of capacity approximately 200 ml and determine the value of (m 1 m 0 ) to be used in all determinations. 7 Test report The test report shall include the following particulars: a) the reference of the method used; b) the results and the metho

22、d of expression used; c) any unusual features noted during the determination; d) any operation not included in this International Standard or in the International Standards to which reference is made, or regarded as optional. m 2 m 0 m 1 m 0 - m 2 m 0 200 -BS4140-10:1986 2 BSI 10-1999 Annex ISO publ

23、ications relating to aluminium oxide primarily used for theproduction of aluminium ISO 802, Preparation and storage of test samples. ISO 803, Determination of loss of mass at 300 C (conventional moisture). ISO 804, Preparation of solution for analysis Method by alkaline fusion. ISO 805, Determinatio

24、n of iron content 1,10-Phenanthroline photometric method. ISO 806, Determination of loss of mass at 1000 and1200 C. ISO 900, Determination of titanium content Diantipyrylmethane photometric method. ISO 901, Determination of absolute density Pyknometer method. ISO 902, Measurement of the angle of rep

25、ose. ISO 903, Determination of untamped density. ISO 1232, Determination of silica content Reduced molybdosilicate spectrophotometric method. ISO 1617, Determination of sodium content Flame emission spectrophotometric method. ISO 1618, Determination of vanadium content N-Benzoyl-N-phenylhydroxylamin

26、e photometric method. ISO 2069, Determination of calcium content Flame atomic absorption method. ISO/R 2070, Determination of calcium content Spectrophotometric method using naphthalhydroxamicacid. ISO 2071, Determination of zinc content Flame atomic absorption method. ISO/R 2072, Determination of z

27、inc content PAN photometric method. ISO 2073, Preparation of solution for analysis Method by hydrochloric acid attack under pressure. ISO 2828, Determination of fluorine content Alizarin complexone and lanthanum chloride spectrophotometric method. ISO 2829, Determination of phosphorus content Reduce

28、d phosphomolybdate spectrophotometric method. ISO 2865, Determination of boron content Curcumin spectrophotometric method. ISO 2926, Particle size analysis Sieving method. ISO 2927, Sampling. ISO 2961, Determination of an adsorption index. ISO 3390, Determination of manganese content Flame atomic ab

29、sorption method.BS4140-10:1986 BSI 10-1999 Publications referred to See national foreword.BS 4140-10: 1986 ISO903:1976 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on s

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