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GB/T 34231-2017 English PDF

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GB/T 34231-2017: Determination of loss on ignition for coal combustion residues
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Basic data

Standard ID GB/T 34231-2017 (GB/T34231-2017)
Description (Translated English) Determination of loss on ignition for coal combustion residues
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D21
Word Count Estimation 6,616
Date of Issue 2017-09-07
Date of Implementation 2018-04-01
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34231-2017: Determination of loss on ignition for coal combustion residues

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of loss on ignition for coal combustion residues ICS 73.040 D21 National Standards of People's Republic of China Determination of loss on ignition of coal combustion residues 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Method Summary 1 5 equipment 1 6 Test Step 2 7 Results Calculation 2 8 method precision 3 9 Test Report 3

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Coal Industry Association. This standard by the National Coal Standardization Technical Committee (SAC/TC42) centralized. This standard was drafted unit. Coal Science and Technology Research Institute Co., Ltd. testing branch. The main drafters of this standard. Xing Xiuyun, Zhou Lu, Xiao room. Determination of loss on ignition of coal combustion residues

1 Scope

This standard specifies the terms and definitions Determination of loss on ignition of coal combustion residues, methods, equipment, test procedures, the results of the meter Count, method precision and test report. This standard applies to coal and coke combustion residues.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 212 coal industrial analysis methods GB/T 483 Methods of analysis of coal - General provisions of test methods

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Coal burning residue coalcombustionresidues Coal after burning the remaining solid material. 3.2 Loss loss lossignignition LOI Coal combustion residues in the burning of the prescribed conditions after the loss of mass fraction. Note Loss on ignition is caused by the loss of moisture, carbon, sulfur, etc., from the burning or decomposition of coal combustion residues. 3.3 Moisture correction lossonignitionaftercorrectionofmoisture The mass fraction of coal combustion residue after burning under specified conditions, after deducting the result of air-drying moisture.

4 method summary

Weigh a certain amount of coal combustion residue samples, in the air at a predetermined temperature to the constant mass burning, according to the quality of the sample loss Calculate the mass fraction of loss on ignition of coal combustion residues.

5 equipment

5.1 Muffle Furnaces Furnaces have sufficient constant temperature zones to maintain temperatures of (500 ± 10) ° C, (815 ± 10) ° C and (950 ± 20 ° C) The upper part of the chimney with a diameter of 25mm ~ 30mm, the lower part of the 20mm ~ 30mm from the bottom of the furnace there is a hole plug thermocouple, The door has a 20mm diameter vent. The muffle furnace thermostatic zone should be measured at least once a year, temperature controller (including the digital temperature

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