73.080 - Non-metalliferous minerals
ICS 73.080 Details
Non-metalliferous minerals
Nichtmetallische Bodenschatze
Minerais non metalliferes
Nekovinske rudnine
General Information
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ISO 10058-3:2008 specifies atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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ISO 10058-2:2008 specifies traditional (“wet process”) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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ISO 10058-1:2008 specifies apparatus, reagents, dissolution and gravimetric silica analysis for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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This part of ISO 10058 specifies traditional ("wet process") methods for the chemical analysis of magnesite and dolomite refractory products and raw materials. It is applicable to components within the ranges of determination given in Table 1.
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This part of ISO 10058 specifies apparatus, reagents, dissolution and gravimetric silica analysis for the chemical analysis of magnesite and dolomite refractory products and raw materials. This part of ISO 10058 is applicable to the ranges of determination given in Table 1. ISO 10058 specifies procedures for the chemical analysis of magnesite and dolomite refractory products and raw materials within the ranges of determination given in Table 1.
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This part of ISO 10058 specifies atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials. It is applicable to components within the ranges of determination given in Table 1.
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ISO 10058-1:2008 specifies apparatus, reagents, dissolution and gravimetric silica analysis for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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ISO 10058-3:2008 specifies atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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ISO 10058-2:2008 specifies traditional (“wet process”) methods for the chemical analysis of magnesite and dolomite refractory products and raw materials.
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Contains minor amendments and additions only.
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Describes a method for the determination of the precision of fluorspar sampling and sample preparation carried out by the methods specified in ISO 8868.
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Sampling and sample preparation of similar types of fluorspar is assumed to be carried out in accordance with the methods specified in ISO 8868. The experimental methods given are based on comparing the results obtained from the method to be checked with the results of a reference method which, for all practical purposes, is considered to produce practically unbiased results.
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Specifies experimental methods for the evaluation of quality variation of fluorspar lots from the same source. These methods are to be used in conjunction with the sampling procedures specified in ISO 8868.
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The principle of the method specified is to decompose a test portion by a mixture of nitric, hydrofluoric and perchloric acids, dissolving the salts in hydrochloric acid after evaporation to fumes of sulfuric acid, extracting the antimony from a dilute hydrochloric acid solution of the decomposed test portion into a solution of tri-n-octylphosphine oxide in 4-methyl-2-pentanone, aspirating the extract into the air/acetylene flame of an atomic absorption spectrometer, and measuring the absorbance at 217,6 nm. Applies to products having an antimony content equal to or greater than 0,001 % (m/m).
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The principle of the method specified is to decompose a test portion by a mixture of nitric, hydrofluoric and perchloric acids, dissolving the salts in hydrochloric acid after evaporation to dryness, extracting the lead from a dilute hydrochloric acid solution of the decomposed test portion into a solution of tri-n-octylphosphine oxide in 4-methyl-2-pentanone, aspirating the extract into the air/acetylene flame of an atomic absorption spectrometer, and measuring the absorbance at 283,3 nm. Applies to products having lead contents in the range 0,0006 % (m/m) to 0,01 % (m/m).
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The method specified is based on decomposition of a test portion by fusion with sodium carbonate and subsequent acidification with hydrochloric acid in the presence of boric acid to complex fluoride, formation of the molybdosilicic acid complex and selective reduction to the blue molybdosilicic acid complex with addition of tartaric acid to prevent interference from phosphate, spectrometric measurement of the absorbance of the coloured complex at the wavelength of maximum absorption (about 795 nm). Applies to products having silica contents, expressed as SiO2, in the range 0,05 % (m/m) to 4,0 % (m/m).
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The method specified is based on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid, dissolution of the melt in excess hydrochloric acid, reduction of the iron(III) with hydroxylammonium chloride, formation of the iron(II)-1,10-phenanthroline complex in a buffered medium (pH between 3 and 5), spectrometric measurement of the absorbance of the coloured complex at a wavelength of about 510 nm, corresponding to the absorption maximum. Applies to products having iron contents, expressed as Fe2O3, in the range 0,1 % (m/m) to 2,0 % (m/m).
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The method specified is based on dissolution of a test portion by fusion with a mixture of sodium carbonate, boric acid and sodium nitrate and subsequent acidification with nitric acid, formation of the molybdophosphate complex and extraction with a mixture of ethyl acetate and butyl acetate, followed by selective reduction of the complex to molybdenum blue by means of tin(II) chloride added to the organic phase, spectrometric measurement of the absorbance of the coloured complex at the wavelength of maximum absorption (about 710 nm). Applies to products having total phosphorus contents, expressed as PO4^3-, in the range 0,01 % (m/m) to 1,0 % (m/m).
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The principle of the method specified is to decompose a test portion by alkaline fusion with sodium carbonate and subsequent acidification with hydrochloric acid in the presence of boric acid to complex fluoride, selective reduction to the blue molybdosilicic acid complex, spectrometric measurement of the absorbance of the coloured complex at a wavelength corresponding to the absorption maximum of approximately 650 nm. Applies to products having silica contents, expressed as SiO2, in the range 0,2 % (m/m) to 30 % (m/m).
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The principle of the method specified is to decompose a test portion by alkaline fusion and subsequent dissolution of the melt in excess of nitric acid, precipitation of iron(III) phosphate with ammonia solution, dissolution of the precipitate in nitric acid, formation of the molybdophosphate complex and extraction, followed by selective reduction of the complex to molybdenum blue, spectrometric measurement of the absorbance of the coloured complex at the wavelength of maximum absorption (about 710 nm). Applies to products having total phosphorus contents, expressed as PO4^3-, in the range 0,01 % (m/m) to 1,0 % (m/m).
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The principle of the method is treatment of a test portion with a mixture of dilute hydrochloric acid and an organic solvent, removal of the insoluble fluorspar by filtration under vacuum, separation of the organic phase containing the flotation agent, evaporation of the solvent and weighing of the residue. Applies to materials which have been subjected to flotation process and which have flotation agent contents equal to or greater than 0,002 % (m/m) of the dried material.
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The principle of the method specified is digestion of a test portion in a sealed apparatus in a mixture of hydrochloric acid, tin(II) chloride and boric acid solutions, absorption of the liberated hydrogen sulfide, entrained in a stream of oxygen-free argon or nitrogen, in zinc acetate solution and iodometric determination of the zinc sulfide formed. The method is applicable to products having a sulfide content equal to or greater than 0,001 % (m/m). It is not applicable, if presence of polysulfides is suspected.
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The principle of the method specified is treatment of a test portion with hydrochloric acid solution, absorption of the evolved carbon dioxide in barium hydroxide solution, neutralization of excess alkali with hydrochloric acid solution, addition of an exactly measured excess of a standard volumetric hydrochloric acid solution to dissolve the precipitated barium carbonate and back-titration with a standard volumetric sodium hydroxide solution using methyl orange as indicator. The method is applicable to products having carbonate contents equal to or greater than 0,04 % (m/m).
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Applicable to products having Mn-contents in the range 0,006 % to 0,4 %. Decomposition of the test portion with nitric and perchloric acids. After dilution follows oxidation of manganese to permanganate with sodium metaperiodate. Spectrometric measurement at 545 nm.
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The method is based on evaporation to dryness of a test portion in the presence of hydrofluoric acid and concentrated sulfuric acid, extraction of the soluble salts from the mixture, filtration, drying and weighing of the residual barium sulfate. Applies to products having barium sulfate contents equal to or greater than 0,1 % (m/m).
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The method is based on drying a test portion at 105 °C and determination of the loss in mass, which corresponds to the content of water and other components volatile at that temperature. Applies to fluorspars, which may be dried material containing not less than 0,02 % (m/m) of components volatile at 105 °C, or filter cake.
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The principle of the method is drying of a test portion in air at 105 °C to constant mass. Determines the mean value of the moisture content.
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Specifies methods for determining silica, alumina, titania, iron oxide and oxides of manganese, chromium, calcium, magnesium, sodium, potassium and lithium. It also specifies methods for determining the loss of ignition of magnesite and dolomite, and of refractories based on these raw materials. Annex A describes a method for determining the boron content of magnesites only.
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Specifies the principle, the reagents, the apparatus, the preparation of the test sample, the test procedure, the expression of results and the test report.
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Specifies a test method. Describes the principle, the reagents, the apparatus, the test sample, the test procedure, the expression of results, and the contents of the test report.
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The method given is applicable to fluorspars having sulfur contents in the range 0,01 % (m/m) to 1,0 % (m/m). Describes in detail: principle, reagents and materials, apparatus, test sample, procedure, expression of results, and test report. Annex A gives values of total sulfur content of metallurgical grade fluorspars obtained in interlaboratory trials using the iodometric method after combustion specified in this standard.
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The specified methods of sampling are applicable to all grades of fluorspar. They apply to the sampling from conveyors, wagons and containers, ships and stockpiles and from bagged material at the time of loading or discharging of a lot.
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Presentation of a basic method of sieving analysis including the definition of terms and a guide to principles of sieving, sieving procedure, expression of results, a decision tree and several examples of sieving apparatus assembly.
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