This document defines terms commonly employed in coal preparation. Note For terms relating to petrographic analysis, see ISO 7404-1.

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This document specifies a method for the comparative evaluation of the performances of flocculants for clarification, thickening and sedimentation applications on a given slurry. This performance can be evaluated by a) the settling velocity in the initial period, b) the sediment volume after compaction and consolidation, and c) the clarity of the supernatant liquid.

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This document sets out a laboratory procedure for the froth flotation testing of fine coal, e.g. coal of particle size less than 0,5 mm. The procedure provides a means of evaluating the general flotation characteristics of a coal under a set of specified standard conditions, and will not necessarily indicate the full flotation potential of that coal. The flotation characteristics of coals are sensitive to changes in flotation conditions. These conditions can be changed by varying basic parameters such as flotation time, reagent and dosage rate. Separate flotation tests are used to assess the effect of varying these parameters to determine the best flotation conditions for a particular coal. A method of evaluating flotation response will be given in a separate standard.

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This document describes the principles and methods for the expression of results of performance tests on sizing equipment used in coal preparation, and includes methods for the evaluation of performance parameters. Performance test procedures and size measurement techniques are recommended. This document applies to all types of sizing equipment, categorized as follows: — screens; — classifiers; — others. The procedure described in this document applies to two-product separations. Performance assessment of multiproduct separations can be achieved by consideration of a series of two-product separations.

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This document specifies a method for assessing the liability of materials associated with coal seams to breakdown on agitation with water.

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ISO 1213-2:2016 defines terms commonly employed in the sampling, testing and analysis of solid mineral fuels. Alternative names are given for several terms. In some cases, however, the use of the alternative name is deprecated (as indicated). An alphabetical index, with numerical cross reference is provided.

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ISO 1953:2015 specifies reference methods for the size analysis of coal by manual sieving (wet or dry), using test sieves of aperture sizes between 125 mm and 45 μm. A guide to sampling is given in Annex A. This International Standard is applicable to all hard coals. It is not applicable to coke or other manufactured fuels. In the case of pulverized coal which has been ground so that a high proportion passes through the test sieve of smallest aperture size, the methods described in this International Standard will determine only the percentage oversize.

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ISO 23499:2013 provides description of a cone procedure for determining an uncompacted bulk density of crushed coal less than 37 mm in size, such as is charged into coke ovens. It focuses on the uncompacted bulk density of coal resulting from flowing the material into a measuring container (box) in the absence of compacting forces. ISO 23499:2013 does not cover procedures for determining a compacted coal bulk density nor to the testing of fine or powdered coal (for boiler or utility application) nor to the determination of bulk density of coal in storage piles.

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ISO 15239:2005 sets out practices for the evaluation of the measurement performance of all types of on-line analysers for solid mineral fuel. It presents information on the different types of analyser currently available and describes procedures for the evaluation of various aspects of measurement performance, appropriate methods of test and techniques for the statistical assessment of the data collected.

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ISO 8858-3:2004 describes a laboratory method for release evaluation of the froth flotation characteristics of hard coal, of particle size less than 0.5 mm. It is applicable to coal in powder form or in the form of a slurry.

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ISO 8858-2:2004 sets out a laboratory sequential procedure for the froth flotation testing of fine coal, e.g. coal having a particle size of less than 0,5 mm. The procedure provides a means of evaluating for a coal the flotation characteristics (expressed as a yield/ash relationship) that may be expected from the froth flotation process. Pulp samples that cannot be dewatered without the use of heat or chemical additives are not covered by this part of ISO 8858; nor does it cover procedures for the investigation of flotation kinetics. The test is not intended to provide plant design data.

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ISO 20905:2004 sets out a laboratory procedure for the dust testing of higher rank coals. The procedure defines a means of evaluating the dust/moisture relationship characteristic of a coal and a dust extinction moisture (DEM).

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ISO 15117-1:2003 sets out methods for the measurement of the flow properties of coal, primarily for the design of bins and chutes. It also provides some guidance on the presentation of these data for analysis and design. ISO 15117-1:2003 consists of a bulk density test and a yield locus test giving information on material flow properties. It also describes a further test, called the wall yield locus, which measures the friction between coal and bin wall material. Although ISO 15117-1:2003 is nominally for coal, the principles and apparatus may be used for coke and other semi-cohesive particulate materials where a knowledge of flow properties is required.

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ISO 10086-2:2004 specifies a method for the comparative evaluation of the performance of flocculants used as filter aids for rotary vacuum filtration applications on a given slurry.

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This International Standard describes the principles and methods for evaluating the performance of equipment used for cleaning operations. Testing and sampling procedures are specified and methods of presenting test results are detailed. Performance parameters are recommended and defined and their determination is formulated, thereby allowing their use in evaluating, comparing and predicting performance levels of cleaning operations. This International Standard is applicable to the following types of coal cleaning equipment using relative density as the main characteristic for separation: a) dense-medium separators; b) jigs; c) other separators.

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Describes sampling, preliminary treatment, test procedure using relative density separation methods, presentation of results. A general procedure for a centrifugal float and sink test is given in Annex A. A typical procedure for treating and testing a sample of raw coal is described in Annex B. Some practical hints on float and sink testing are given in annex C.

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The symbols have been selected in accordance with the following principles: a) the plants should be widely used; b) the symbols should be easy to draw and readily be distinguishable one from another; c) the principle and not the appearance of any particular type of machine should be represented, d) where a single symbol represents a group of items for which separate symbols are s-tandardized nationally, the ISO symbol should be readily distinguishable from any one of the national symbols.

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Sets out principles and conventions for use in preparation of basic process and equipment flowsheets for the design of a coal preparation plant. In order to cover the various stages leading to the final design of a plant, two basic flowsheets are needed, one bases on the process and the other on the equipment. Examples of process and equipment flowsheets are shown in figures.

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Specifies methods for sampling and testing of magnetite. The specified tests should ensure that the properties which make magnetite suitable for coal preparation purpose are simply and adequately tested. These properties are: moisture content, particle size distribution, total magnetics content, relative density, total iron(II) content, fundamental magnetic properties.

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ISO 23499:2008 provides description of a cone procedure for determining an uncompacted bulk density of crushed coal less than 37 mm in size, such as is charged into coke ovens. It focuses on the uncompacted bulk density of coal resulting from flowing the material into a measuring container (box) in the absence of compacting forces. ISO 23499:2008 does not cover procedures for determining a compacted coal bulk density nor to the testing of fine or powdered coal (for boiler or utility application) nor to the determination of bulk density of coal in storage piles.

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Specifies reference methods for the size analysis of coal by manual sieving (wet or dry), using test sieves of aperture sizes between 125 mm and 45 µm. A guide to sampling is given in annex A and notes on the use of mechanical sieving are given in annex B. Is applicable to all hard coals. Is not applicable to coke or other manufactured fuels. In the case of pulverized coal, the methods described will determine only the percentage of oversize.

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Describes the principles and methods for the expression of results of performance tests on sizing equipment used in coal preparation, and includes methods for the evaluation of performance parameters. Performance test procedures and size measurement techniques are recommended. Applies to all types of sizing equipment, categorized as screens, classifiers, and others. The procedure described applies to two-product separations. Performance assessment of multiproduct separations can be achieved by consideration of a series of two-product separation.

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The principle of the method specified is degrading a test portion of shale in the size range 5,6 mm to 2,8 mm, by controlled agitation in water, determining the proportion of degraded material passing through a 500 µm sieve, and determining the proportion of degraded material of nominal top size less than 10 µm by sedimentation.

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Defines, in English, 420 terms commonly employed in coal preparation under the following headlines: general terms, sizing, cleaning, separation of solids from water or air, size reduction, expression of results, blending and homogenization, automatic control.

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