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GB/T 211-2017   Determination of total moisture in coal (English Version)
Standard No.: GB/T 211-2017 Status:valid remind me the status change

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Word Count: 5500 words Price(USD):130.0 remind me the price change

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Standard No.: GB/T 211-2017
English Name: Determination of total moisture in coal
Chinese Name: 煤中全水分的测定方法
Chinese Classification: D21    Coal analysis methods
Professional Classification: GB    National Standard
ICS Classification: 73.060.10 73.060.10    Iron ores 73.060.10
Issued by: AQSIQ; SAC
Issued on: 2017-09-07
Implemented on: 2018-4-1
Status: valid
Superseding:GB/T 211-2007 Determination of total moisture in coal
Language: English
File Format: PDF
Word Count: 5500 words
Price(USD): 130.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed according to the rules specified in GB/T 1.1-2009. This standard replaces GB/T 211-2007 Determination of Total Moisture in Coal. The following main technical changes have been made with respect to GB/T 211-2007 in addition to a number of editorial changes: ——Method C (drying in microwave) is deleted from determination methods (see 3.3 of Edition 2007); ——13mm sample is added in Method B1 (see 3.2.1; 3.2.1 of Edition 2007); ——Correction of air dried moisture loss in sample preparation is added (see 7.4); ——Informative annex titled "Determination of Total Moisture in Coal by Drying in Microwave" is added (see Annex A). This standard has been redrafted and modified in relation to and is nonequivalent to ISO 589:2008 Hard Coal — Determination of Total Moisture. This standard was proposed by the China National Coal Association. This standard is under the jurisdiction of National Technical Committee on Coal Standardization Administration of China (SAC/TC 42). The previous editions of this standard replaced by this standard include: ——GB 211-1963, GB 211-1984, GB/T 211-1996, GB/T 211-2007. Determination of Total Moisture in Coal 1 Scope This standard specifies determination of total moisture in coal in terms of method summary, reagents and materials, apparatus, sample, procedure, result calculation, method precision and test report. In this standard, drying under nitrogen (Method A1 and Method B1) is suitable for all coals while drying in air (Method A2 and Method B2) is suitable for soft coal (excluding coals susceptible to oxidation) and blind coal. In this standard, Method A1 serves as an arbitration method. Note: this standard also provides drying in microwave for quick determination of full moisture and this method is suitable for soft coal and lignite, as shown in Annex A. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 212 Proximate Analysis of Coal GB/T 474 Method for Preparation of Coal Sample GB/T 19494.2 Mechanical Sampling of Coal Part 2: Method for Sample Preparation 3 Method Summary 3.1 Method A (two-stage method) 3.1.1 Method A1: drying in nitrogen Some amount of 13mm sample is weighed and dried at temperature not exceeding 40℃ until mass is constant, crush the air-dried sample to 3mm nominal top size and then dry it in a nitrogen flow at 105℃~110℃ until mass is constant. Full moisture is calculated by the mass loss of sample after two-stage drying. 3.1.2 Method A2: drying in air Some amount of 13mm sample is weighed and dried at temperature not exceeding 40℃ until mass is constant, crush the air-dried sample to 3mm nominal top size and then dry it in an airflow at 105℃~110℃ until mass is constant. Full moisture is calculated by the mass loss of sample after two-stage drying. 3.2 Method B (single-stage methods) 3.2.1 Method B1: drying in nitrogen Some amount of 6mm (or 13mm) sample is weighed and dried in a nitrogen flow until mass is constant at 105℃~110℃. The full moisture is calculated from the loss in mass of the sample. 3.2.2 Method B2: drying in air Some amount of 13mm (or 6mm) sample is weighed and dried in an airflow until mass is constant at 105℃~110℃. The full moisture is calculated from the loss in mass of the sample. 4 Reagents and Materials 4.1 Anhydrous calcium chloride: chemically pure, granular. 4.2 Allochroic silicagel: industrial product. 4.3 Nitrogen: having purity of not exceeding 99.9% and oxygen content of less than 0.01%. 4.4 Weighing tray: made of heat- and corrosion-resistant materials such as enamel, stainless steel, galvanized steel sheet or aluminum plate, capable of holding 500g of sample and with unit area loading not exceeding 1g/cm2. 4.5 Glass weighing bottle: with a diameter of 70mm, a height of 35mm~40mm and a tight ground cover. 4.6 Sampler: suitable for 13mm or 6mm sample and with an opening at least three times as large as the particle size. 5 Apparatus 5.1 Air-dried oven: with automatic temperature control and blowing device, capable of being controlled at a temperature of 30℃~40℃ and 105℃~110℃, with air inlet and outlet and sufficiently rapid rate of atmosphere change, over 5 times per hour. 5.2 Nitrogen-flushed oven: with automatic temperature regulating device, capable of be controlled at a temperature of 105℃~110℃ and holding an amount of weighing bottle and with smaller free space and nitrogen inlet and outlet and rate of atmosphere change over 15 times per hour. 5.3 Analytical balance: capable of weighing to 0.001g. 5.4 Industrial balance: capable of weighing to 0.1g. 5.5 Dryer: filled with allochroic silicagel or granular anhydrous calcium chloride. 5.6 Flowmeter: with a measuring range of 100mL/min ~1000 mL/min. 5.7 Drying tower: with a capacity of 250mL and filled with allochroic silicagel or granular anhydrous calcium chloride.
Foreword i 1 Scope 2 Normative References 3 Method Summary 4 Reagents and Materials 5 Apparatus 6 Sample 7 Procedure 8 Precision of Method 9 Test Report Annex A (Informative) Determination of Total Moisture in Coal by Drying in Microwave
Referred in GB/T 211-2017:
*GB/T 212-2008 Proximate analysis of coal
*GBT474-
*GB/T 19494.2-2023 Mechanical sampling of coal—Part 2:Method for sample preparaion
*GB/T 1703-2017 Cycle inner tubes
*GB/T 2520-2017 Cold-reduced electrolytic tinplate [Steel-plate & steel-strip]
*GB/T 3001-2017 Refractory products-Determination of modulus of rupture at ambient temperature
*GB/T 3003-2017 Refractory fibres and the products
*GB/T 7321-2017 Sample preparation for testing of shaped refractory products
*GB/T 7377-2017 Series of cycle tyres
*GB/T 17855-2017 Calculation of load capacity of spline
*GB 18047-2017 Compressed natural gas as vehicle fuel
GB/T 211-2017 is referred in:
*GB/T 18512-2022 Commercial coal quality—Coal for blast furnace injection
*GB/T 7563-2018 Commercial coal quality—Coal for rotary cement kiln
*GB/T 10180-2017 Thermal performance test code for industrial boilers
*GB/T 16563-2017 Series 1 freight containers - Specification and testing - Tank containers for liquids, gases and pressurized dry bulk
*GB/T 2979-2017 Size designation, dimensions, inflation pressure and load capacity for agricultural tyres
*TB 10098-2017 Code for Design of Railway Line
*YY 0592-2016 High intensity focused ultrasound therapy system
*GB/T 31467.3-2015 Lithium-ion traction battery pack and system for electric vehicles—Part 3:Safety requirements and test methods
*GB/T 34224-2017 Method for determination of functional microorganism in biologic products
Code of China
Standard
GB/T 211-2017  Determination of total moisture in coal (English Version)
Standard No.GB/T 211-2017
Statusvalid
LanguageEnglish
File FormatPDF
Word Count5500 words
Price(USD)130.0
Implemented on2018-4-1
Deliveryvia email in 1 business day
Detail of GB/T 211-2017
Standard No.
GB/T 211-2017
English Name
Determination of total moisture in coal
Chinese Name
煤中全水分的测定方法
Chinese Classification
D21
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2017-09-07
Implemented on
2018-4-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 211-2007 Determination of total moisture in coal
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
130.0
Keywords
GB/T 211-2017, GB 211-2017, GBT 211-2017, GB/T211-2017, GB/T 211, GB/T211, GB211-2017, GB 211, GB211, GBT211-2017, GBT 211, GBT211
Introduction of GB/T 211-2017
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed according to the rules specified in GB/T 1.1-2009. This standard replaces GB/T 211-2007 Determination of Total Moisture in Coal. The following main technical changes have been made with respect to GB/T 211-2007 in addition to a number of editorial changes: ——Method C (drying in microwave) is deleted from determination methods (see 3.3 of Edition 2007); ——13mm sample is added in Method B1 (see 3.2.1; 3.2.1 of Edition 2007); ——Correction of air dried moisture loss in sample preparation is added (see 7.4); ——Informative annex titled "Determination of Total Moisture in Coal by Drying in Microwave" is added (see Annex A). This standard has been redrafted and modified in relation to and is nonequivalent to ISO 589:2008 Hard Coal — Determination of Total Moisture. This standard was proposed by the China National Coal Association. This standard is under the jurisdiction of National Technical Committee on Coal Standardization Administration of China (SAC/TC 42). The previous editions of this standard replaced by this standard include: ——GB 211-1963, GB 211-1984, GB/T 211-1996, GB/T 211-2007. Determination of Total Moisture in Coal 1 Scope This standard specifies determination of total moisture in coal in terms of method summary, reagents and materials, apparatus, sample, procedure, result calculation, method precision and test report. In this standard, drying under nitrogen (Method A1 and Method B1) is suitable for all coals while drying in air (Method A2 and Method B2) is suitable for soft coal (excluding coals susceptible to oxidation) and blind coal. In this standard, Method A1 serves as an arbitration method. Note: this standard also provides drying in microwave for quick determination of full moisture and this method is suitable for soft coal and lignite, as shown in Annex A. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 212 Proximate Analysis of Coal GB/T 474 Method for Preparation of Coal Sample GB/T 19494.2 Mechanical Sampling of Coal Part 2: Method for Sample Preparation 3 Method Summary 3.1 Method A (two-stage method) 3.1.1 Method A1: drying in nitrogen Some amount of 13mm sample is weighed and dried at temperature not exceeding 40℃ until mass is constant, crush the air-dried sample to 3mm nominal top size and then dry it in a nitrogen flow at 105℃~110℃ until mass is constant. Full moisture is calculated by the mass loss of sample after two-stage drying. 3.1.2 Method A2: drying in air Some amount of 13mm sample is weighed and dried at temperature not exceeding 40℃ until mass is constant, crush the air-dried sample to 3mm nominal top size and then dry it in an airflow at 105℃~110℃ until mass is constant. Full moisture is calculated by the mass loss of sample after two-stage drying. 3.2 Method B (single-stage methods) 3.2.1 Method B1: drying in nitrogen Some amount of 6mm (or 13mm) sample is weighed and dried in a nitrogen flow until mass is constant at 105℃~110℃. The full moisture is calculated from the loss in mass of the sample. 3.2.2 Method B2: drying in air Some amount of 13mm (or 6mm) sample is weighed and dried in an airflow until mass is constant at 105℃~110℃. The full moisture is calculated from the loss in mass of the sample. 4 Reagents and Materials 4.1 Anhydrous calcium chloride: chemically pure, granular. 4.2 Allochroic silicagel: industrial product. 4.3 Nitrogen: having purity of not exceeding 99.9% and oxygen content of less than 0.01%. 4.4 Weighing tray: made of heat- and corrosion-resistant materials such as enamel, stainless steel, galvanized steel sheet or aluminum plate, capable of holding 500g of sample and with unit area loading not exceeding 1g/cm2. 4.5 Glass weighing bottle: with a diameter of 70mm, a height of 35mm~40mm and a tight ground cover. 4.6 Sampler: suitable for 13mm or 6mm sample and with an opening at least three times as large as the particle size. 5 Apparatus 5.1 Air-dried oven: with automatic temperature control and blowing device, capable of being controlled at a temperature of 30℃~40℃ and 105℃~110℃, with air inlet and outlet and sufficiently rapid rate of atmosphere change, over 5 times per hour. 5.2 Nitrogen-flushed oven: with automatic temperature regulating device, capable of be controlled at a temperature of 105℃~110℃ and holding an amount of weighing bottle and with smaller free space and nitrogen inlet and outlet and rate of atmosphere change over 15 times per hour. 5.3 Analytical balance: capable of weighing to 0.001g. 5.4 Industrial balance: capable of weighing to 0.1g. 5.5 Dryer: filled with allochroic silicagel or granular anhydrous calcium chloride. 5.6 Flowmeter: with a measuring range of 100mL/min ~1000 mL/min. 5.7 Drying tower: with a capacity of 250mL and filled with allochroic silicagel or granular anhydrous calcium chloride.
Contents of GB/T 211-2017
Foreword i 1 Scope 2 Normative References 3 Method Summary 4 Reagents and Materials 5 Apparatus 6 Sample 7 Procedure 8 Precision of Method 9 Test Report Annex A (Informative) Determination of Total Moisture in Coal by Drying in Microwave
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Keywords:
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