1、BRITISH STANDARD BS4140-1: 1986 ISO802:1976 Methods of Test for aluminium oxide Part1: Preparation and storage of test samples ISO title: Aluminium oxide primarily used for the production ofaluminium Preparation and storage of test samples NOTEIt is recommended that this Part be read in conjunction
2、with the general information given in BS4140-0 “General introduction” which is issued separately. UDC546.62331:620.1BS4140-1:1986 This British Standard, having been prepared under the directionof the Chemicals Standards Committee, was published under the authority ofthe Board of BSI and comes intoef
3、fect on 31January1986 BSI12-1999 The Committees responsible for this British Standard are shown inPart0. The following BSI references relate to the work on this standard: Committee reference CIC/24 Draft for comment84/55315 DC ISBN 0 580 14890 4 National foreword This Part of BS4140 is identical wit
4、h ISO802:1976 “Aluminium oxide primarily used for the production of aluminium Preparation and storage oftest samples”, published by the International Organization for Standardization(ISO). The method supersedes clause2 of BS4140:1967. Parts1 to7 of this standard collectively supersedes BS4140:1967,
5、which is withdrawn. Terminology and conventions. The text of the International Standard has been approved as suitable 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 especiall
6、y to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. NOTEThe o
7、ther International Standards listed in the Annex are for information only. Their correspondence with British Standards is summarized in BS4140-0 “General introduction”. Additional information. The current IUPAC name, also given in BS2474 “Recommendations for names for chemicals used in industry”, fo
8、r the desiccant referred to in3.3.2.4 is diphosphorus pentaoxide. 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 preparation and storage used complies with BS4140-
9、1:1986. A British Standard does not purport to include all 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. Summary of pages This document co
10、mprises a front cover, an inside front cover, pagesi andii, pages1 and2, an inside back cover and a back cover. This standard 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. Cross-references Inte
11、rnational Standard Corresponding British Standard ISO2927:1973 BS4140 Methods of test for aluminium oxide Part20:1980 Sampling (Identical) Amendments issued since publication Amd. No. Date of issue CommentsBS4140-1:1986 BSI 12-1999 i Contents Page National foreword Inside front cover 1 Scope and fie
12、ld of application 1 2 Reference 1 3 Preparation of test samples 1 4 Marking of containers 1 Annex ISO publications relating to aluminium oxide primarily usedfortheproduction of aluminium 2 Publications referred to Inside back coverii blankBS4140-1:1986 BSI 12-1999 1 1 Scope and field of application
13、This International Standard specifies methods for the preparation and storage of test samples, i.e.crude sample and dried sample, of aluminium oxide primarily used for the production of aluminium. 2 Reference ISO2927, Aluminium oxide primarily used for the production of aluminium Sampling. 3 Prepara
14、tion of test samples 3.1 Laboratory sample For the preparation of the laboratory sample, use the method specified in ISO2927. 3.2 Crude sample, for the determination of certain geometrical characteristics, for certain physical and physico-chemical tests and for moisture determination. Take approxima
15、tely300g of the laboratory sample and place it in an air-tight container of such a capacity that it is nearly filled by the sample. 3.3 Dried sample, for chemical tests and the determination of certain geometrical characteristics and for certain physical and physico-chemical tests. 3.3.1 Principle G
16、rinding followed by sieving of the sample until the whole passes through a0,2mm sieve. Thorough mixing and drying at approximately300 C. 3.3.2 Apparatus Ordinary laboratory apparatus and 3.3.2.1 Sieve, of mesh aperture0,2mm, made of material that cannot cause introduction of the impurities to be det
17、ermined. The sieve shall be selected in relation to the nature of the aluminium oxide and of the impurity to be determined. 3.3.2.2 Corundum mortar 3.3.2.3 Electric oven, capable of being controlled at300 10 C. 3.3.2.4 Desiccator, preferably containing freshly activated alumina or phosphorus(V) oxid
18、e (the use of calcium chloride shall be avoided). 3.3.3 Procedure Sieve100 to200g of aluminium oxide using the sieve(3.3.2.1). Grind the material remaining in the sieve in the corundum mortar(3.3.2.2) and sieve again. Add these sievings to the material which has previously passed through the sieve a
19、nd mix carefully. Repeat the grinding, sieving and mixing operations until all the material passes through the sieve. Place the sample thus prepared in a dish (preferably of platinum) and dry for2h in the oven(3.3.2.3), controlled at300 10 C. Then allow to cool in the desiccator(3.3.2.4). Keep the d
20、ried sample in an air-tight container of such a capacity that it is nearly filled by the sample. 4 Marking of containers The containers shall bear a label stating: a) the name of the product; b) the origin of the product; c) the nature of the sample (crude or dried); d) the type of sieve used; e) th
21、e date of preparation.BS4140-1:1986 2 BSI 12-1999 Annex ISO publications relating to aluminium oxide primarily used for theproduction of aluminium ISO802, Preparation and storage of test samples. ISO803, Determination of loss of mass at300 C (conventional moisture). ISO804, Preparation of solution f
22、or analysis Method by alkaline fusion. ISO805, Determination of iron content 1,10-Phenanthroline photometric method. ISO806, Determination of loss of mass at1000 and1200 C. ISO900, Determination of titanium content Diantipyrylmethane photometric method. ISO901, Determination of absolute density Pykn
23、ometer method. ISO902, Measurement of the angle of repose. ISO903, Determination of untamped density. ISO1232, Determination of silica content Reduced molybdosilicate spectrophotometric method. ISO1617, Determination of sodium content Flame emission spectrophotometric method. ISO1618, Determination
24、of vanadium content N-Benzoyl-N-phenylhydroxylamine photometric method. ISO2069, Determination of calcium content Flame atomic absorption method. ISO/R2070, Determination of calcium content Spectrophotometric method using naphthalhydroxamicacid. ISO2071, Determination of zinc content Flame atomic ab
25、sorption method. ISO/R2072, Determination of zinc content PAN photometric method. ISO2073, Preparation of solution for analysis Method by hydrochloric acid attack under pressure. ISO2828, Determination of fluorine content Alizarin complexone and lanthanum chloride spectrophotometric method. ISO2829,
26、 Determination of phosphorus content Reduced phosphomolybdate spectrophotometric method. ISO2865, Determination of boron content Curcumin spectrophotometric method. ISO2926, Particle size analysis Sieving method. ISO2927, Sampling. ISO2961, Determination of an adsorption index. ISO3390, Determinatio
27、n of manganese content Flame atomic absorption method.BS4140-1:1986 BSI 12-1999 Publications referred to See national foreword.BS4140-1: 1986 ISO802:1976 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStan
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