6375 International Standard (TSO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEXKAYHAPOAHAA OPTAHM3ALWR HO CTAHAAPTM3AUMM+ORGANISATION INTERNATIONALEDE NORMALISATION ANst Internat Dos Secf Carbonaceous materials for the production of aluminium Cokes for electrodes - Sampling Produits carbones utilises pour la production de I'aluminium--Cokes pour électrodes-Echantillonnage First edition - 1980-09-15 SEP 2 6 1980 ISO 6375-1980 (E) UDC 665.777.43: 669.713.7:620.113 Ref.No.ISO6375-1980(E) Descriptors :extractive metallurgy,aluminium, coke,pitch (materials),petroleum products, electrodes,sampling. Price based on 5pages ht Intermational OrganizationforStandardizatior Not for Resal Foreword ISo (the Internationai Organization for Standardization) is a worldwide federation of national standards institutes (Iso member bodies). The work of developing Inter- national Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. International Standard ISO 6375 was developed by Technical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in December 1978. It has been approved by the member bodies of the following countries : Belgium India South Africa, Rep. of Bulgaria Israel Sweden China Italy Switzerland Czechoslovakia Korea, Rep. of Turkey Egypt, Arab Rep. of Netherlands United Kingdom France New Zealand USA Germany,F.R. Poland USSR Hungary Romania Yugoslavia No member body expressed disapproval of the document. InternationalOrganizationforStandardization,1980 Printed in Switzerland n for Standardizatior No reproduction or networking permitted without license from IHS Not for Resale ISO6375-1980 (E) INTERNATIONALSTANDARD Carbonaceous materials for the production of aluminium - Cokes for electrodes - Sampling Scope and field of application 3 Practical considerations This International Standard specifies methods for sampling and 3.1 Sampling apparatus (see Iso 2309, annex) preparationof samplesfromlotsof calcined coke so astoob tain, with sufficient accuracy, a sample that is representative of Use automatic sampling apparatus whenever possible. the average qualities of each entire lot. Hand-operated sampling tools (scoops, frames placed on con It is applicable to cokes manufactured from pitch or petroleum veyor belts, etc.) shall have a width for taking samples which is intended specifically for use in the manufacture of electrodes at least 2,5 times the maximum dimension of the iargest pieces used for the electrolytic production of aluminium. and shall be capable of taking a sample of material of 1 to 2 kg at a time. Because of the special requirements of these cokes, this Inter- national Standard includes provisions which do not appear in The sample containers shall not be filled to more than 9/10 of themethodsforsamplingsimilarcarbonaceousproducts,such their volume. as metallurgical cokes. These provisions are mainly concerned with the composition of samples for physical measurements and for particle size analysis. 3.2 Special cases of sampling The theoretical and practical aspects of sampling on which this Refer to Is0 2309, clause 6, for sampling procedures in specific International Standard is based are described more fully in circumstances (conveyor belt, various types of wagon, ships, ISo 1988 (coal) and ISo 2309 (metallurgical .coke) and users etc.). are referred to these documents for greater detail. Whenever possible, avoid sampling from a stationary bulk and Because of processing considerations, it is essential that the sample the consignment to be checked during loading or