73.060.30 - Chromium ores
ICS 73.060.30 Details
Chromium ores
Chromerze
Minerais de chrome
Kromove rude
General Information
Frequently Asked Questions
ICS 73.060.30 is a classification code in the International Classification for Standards (ICS) system. It covers "Chromium ores". The ICS is a hierarchical classification system used to organize international, regional, and national standards, facilitating the search and identification of standards across different fields.
There are 26 standards classified under ICS 73.060.30 (Chromium ores). These standards are published by international and regional standardization bodies including ISO, IEC, CEN, CENELEC, and ETSI.
The International Classification for Standards (ICS) is a hierarchical classification system maintained by ISO to organize standards and related documents. It uses a three-level structure with field (2 digits), group (3 digits), and sub-group (2 digits) codes. The ICS helps users find standards by subject area and enables statistical analysis of standards development activities.
This document specifies a titrimetric method for the determination of the chromium content of chromium ores and concentrates having a chromium content greater than a mass fraction of 7,00 %.
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SIGNIFICANCE AND USE
5.1 This test method is intended to be used for compliance with compositional specifications for chromium oxide content in chromium-bearing ores. It is assumed that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E882.
SCOPE
1.1 This test method covers the determination of chromium oxide (Cr2O3) in chrome ores in the compositional range from 25 % to 60 %.
Note 1: As used in this test method, “%” refers to a mass fraction (wt/wt %) (g/100g).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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The molecular absorption spectrometric method (A) is applicable to products having silicon contents from 0,05 to 0,5 % (m/m), the gravimetric method (B) is applicable to products having silicon contents from 0,5 to 15 % (m/m). ISO 5997 should be read in conjunction with ISO 4297. Specifies among other things principle, reagents, apparatus, procedure, spectrometric measurement (method A only) and expression of results.
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The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ISO 6127 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.
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Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.
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The method is applicable to a concentration range of 1.5 to 20.0 % (m/m) of aluminium. ISO 8889 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sample, procedure and expression of results.
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The method is applicable to products having a calcium content greater than 0,1 % (m/m) and a magnesium content greater than 3,0 % (m/m). Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, procedure and expression of results.
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The method is intended to be carried out simultaneously with the determination of other constituents of the same analytical sample so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. ISO 6129 should be read in conjunction with ISO 6629.
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The method is applicable to chromium ores with iron content of 0,5 to 32 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sampling and samples, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.
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The method is applicable to products having a chromium content greater than 7 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results.
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Specifies methods of preparing samples of chromium ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to natural or processed ores.
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Specifies methods for taking samples of chromium ores to be used at the places of dispatch and acceptance of ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to both the manual and mechanical sampling of natural or processed ores. Details of the hammer and shovel method are given in annex A.
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Specifies methods of preparing samples of chromium ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to natural or processed ores.
- Standard12 pagesEnglish languagee-Library read for1 day
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- Standard12 pagesFrench languagesale 15% off
Specifies methods for taking samples of chromium ores to be used at the places of dispatch and acceptance of ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to both the manual and mechanical sampling of natural or processed ores. Details of the hammer and shovel method are given in annex A.
- Standard11 pagesEnglish languagee-Library read for1 day
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The method is applicable to a concentration range of 1.5 to 20.0 % (m/m) of aluminium. ISO 8889 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sample, procedure and expression of results.
- Standard3 pagesEnglish languagee-Library read for1 day
- Standard3 pagesEnglish languagesale 15% off
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- Standard3 pagesFrench languagesale 15% off
The method is applicable to chromium ores with iron content of 0,5 to 32 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sampling and samples, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.
- Standard3 pagesEnglish languagee-Library read for1 day
- Standard3 pagesEnglish languagesale 15% off
- Standard3 pagesFrench languagesale 15% off
The molecular absorption spectrometric method (A) is applicable to products having silicon contents from 0,05 to 0,5 % (m/m), the gravimetric method (B) is applicable to products having silicon contents from 0,5 to 15 % (m/m). ISO 5997 should be read in conjunction with ISO 4297. Specifies among other things principle, reagents, apparatus, procedure, spectrometric measurement (method A only) and expression of results.
- Standard5 pagesEnglish languagee-Library read for1 day
- Standard5 pagesEnglish languagesale 15% off
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The method is applicable to products having a chromium content greater than 7 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results.
- Standard4 pagesEnglish languagee-Library read for1 day
- Standard4 pagesEnglish languagesale 15% off
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The method is applicable to products having a calcium content greater than 0,1 % (m/m) and a magnesium content greater than 3,0 % (m/m). Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, procedure and expression of results.
- Standard4 pagesEnglish languagee-Library read for1 day
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The method is intended to be carried out simultaneously with the determination of other constituents of the same analytical sample so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. ISO 6129 should be read in conjunction with ISO 6629.
- Standard1 pageEnglish languagee-Library read for1 day
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Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.
- Standard2 pagesEnglish languagee-Library read for1 day
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- Standard2 pagesFrench languagesale 15% off
The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ISO 6127 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.
- Standard4 pagesEnglish languagee-Library read for1 day
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