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73.060.30 - Chromium ores

ICS 73.060.30 Details

Chromium ores

Chromerze

Minerais de chrome

Kromove rude

General Information

Parent
73.060 - Metalliferous minerals and their concentrates
Standardization Organization
Technical Committee
Directive
Mandate
50
SIST
SIST ISO 5997:2001(Main)
Chromium ores and concentrates -- Determination of silicon content -- Molecular absorption spectrometric method and gravimetric method
ISO 5997:1984

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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SIST
SIST ISO 6127:2001(Main)
Chromium ores -- Determination of phosphorus content -- Reduced molybdophosphate photometric method
ISO 6127:1981

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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SIST
SIST ISO 5975:2001(Main)
Chromium ores -- Determination of calcium and magnesium contents -- EDTA titrimetric method
ISO 5975:1983

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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SIST
SIST ISO 6331:2001(Main)
Chromium ores and concentrates -- Determination of chromium content -- Titrimetric method
ISO 6331:1983

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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SIST
SIST ISO 8889:2001(Main)
Chromium ores and concentrates -- Determination of aluminium content -- Complexometric method
ISO 8889:1988

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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SIST
SIST ISO 6130:2001(Main)
Chromium ores -- Determination of total iron content -- Titrimetric method after reduction
ISO 6130:1985

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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SIST
SIST ISO 6629:2001(Main)
Chromium ores and concentrates -- Methods of chemical analysis -- General instructions
ISO 6629:1981

Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.

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SIST
SIST ISO 6129:2001(Main)
Chromium ores -- Determination of hygroscopic moisture content in analytical samples -- Gravimetric method
ISO 6129:1981

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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SIST
SIST ISO 6153:1998(Main)
Chromium ores -- Increment sampling
ISO 6153:1989

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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SIST
SIST ISO 6154:1998(Main)
Chromium ores -- Preparation of samples
ISO 6154:1989

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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ISO
ISO 6154:1989(Main)
Chromium ores — Preparation of samples
SIST ISO 6154:1998

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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ISO
ISO 6153:1989(Main)
Chromium ores — Increment sampling
SIST ISO 6153:1998

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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ISO
ISO 8889:1988(Main)
Chromium ores and concentrates — Determination of aluminium content — Complexometric method
SIST ISO 8889:2001

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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ISO
ISO 6130:1985(Main)
Chromium ores — Determination of total iron content — Titrimetric method after reduction
SIST ISO 6130:2001

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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ISO
ISO 5997:1984(Main)
Chromium ores and concentrates — Determination of silicon content — Molecular absorption spectrometric method and gravimetric method
SIST ISO 5997:2001

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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ISO
ISO 6331:1983(Main)
Chromium ores and concentrates — Determination of chromium content — Titrimetric method
SIST ISO 6331:2001

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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ISO
ISO 5975:1983(Main)
Chromium ores — Determination of calcium and magnesium contents — EDTA titrimetric method
SIST ISO 5975:2001

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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ISO
ISO 6129:1981(Main)
Chromium ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method
SIST ISO 6129:2001

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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ISO
ISO 6629:1981(Main)
Chromium ores and concentrates — Methods of chemical analysis — General instructions
SIST ISO 6629:2001

Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.

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ISO
ISO 6127:1981(Main)
Chromium ores — Determination of phosphorus content — Reduced molybdophosphate photometric method
SIST ISO 6127:2001

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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50