ISO INTERNATIONAL STANDARD 4299 Second edition 1989-07-01 Manganese ores -- Determination of moisture content Minerais de manganese-Determination de I'humidite Referencenumber ISO 4299:1989 (E) ISO4299:1989 (E) Foreword Iso (the International Organization 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 has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closelywiththeInternationalElectrotechnical Commission(lEC)onall matters of electrotechnical standardization. the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. InternationalStandardISO4299waspreparedbyTechnicalCommitteeISO/TC65 Manganeseand chromium ores. This second edition cancels and replaces the first edition (iS0 4299: 1980) of which it constitutes a minor revision. AnnexesAand Bform an integral part ofthisInternational Standard. ISO1989 means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56.CH-1211Geneve 20.Switzerland Printed in Switzerland ii Coovriaht Int nfor Standardization ISO4299:1989(E) INTERNATIONALSTANDARD Manganese ores -- Determination of moisture content 1 Scope 3.3 test portion : A representative part of a test sample sub- jected to moisture measurement. This International Standard specifies a method for determining the mean value of the moisture content of a consignment (lot) If the entire quantity of a test sample is subjected to moisture of manganese ores, whether natural or processed, including measurement,the test sample may also be called "test concentrates, pellets and agglomerates. portion". The method is intended to be applied at the places of dispatch and/or acceptance of the ore. 4 Principle Annex A specifies a method to be used in the case of adhesive Drying of the test portion in an oven at 105 oC and determi- or wet manganese ores.Annex B specifies methods of correc- nation of the moisture content, as a percentage by mass, from tion for sprinkled water and/or rain-water. the initial and dried masses. 2 Normative references 5 Apparatus The following standards contain provisions which, through 5.1 Drying pans, made of stainless material (for example, reference in this text, constitute provisions of this International stainless steel orbrass),having a smooth surface, free from Standard. At the time of publication, the editions indicated contamination and capable of accommodating the specified were valid. All standards are subject to revision, and parties to quantity of moisture sample in a layer of thickness less than agreementsbasedonthisInternationalStandardareencour- 30 mm. aged to investigate the possibility of applying the most recent editions of the standards listed below.Members of IEC andISO 5.2 Drying oven, equipped with a temperature-controlling maintain registers of currently valid International Standards. device capable of regulating the temperature at all points in the oventowithin±5C of thedesiredtemperature. Iso.4296-1: 1984, Manganese ores - Sampling - Part 1: Increment sampling. 5.3 Weighing device, accurate to at least 0,05 % of the in- Iso4296-2:1983,Manganese ores- itial mass of a sample. Sampling--Part2: Preparationofsamples. 6 Sampling and samples 3 Definitions Test samples which have been taken in accordance with ISo 4296-1and prepared in accordance with 1So 4296-2 shall For the purposes of this international Standard, the following be used. The mass of a test port