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GB/T 34230-2017: Test method of leaching for coal and coal refuse
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Test method of leaching for coal and coal refuse
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GB/T 34230-2017
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Basic data | Standard ID | GB/T 34230-2017 (GB/T34230-2017) | | Description (Translated English) | Test method of leaching for coal and coal refuse | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Word Count Estimation | 10,156 | | 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 34230-2017: Test method of leaching for coal and coal refuse---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.
Test method of leaching for coal and coal refuse
ICS 73.040
D21
National Standards of People's Republic of China
Coal and coal gangue leaching test methods
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
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Method Summary 1
5 sample processing 2
6 Leaching 2
7 leaching solution determination 3
8 Test Report 4
Appendix A (informative) Identification of coal and coal gangue leaching toxicity 5
Reference 6
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. Yang Huayu, Mark Fu, Guo Yupeng.
Introduction
Coal and coal gangue leaching with water, in which harmful elements such as mercury, arsenic, fluorine, copper, nickel, zinc, lead, cadmium and chromium migration and transformation, polluting the environment. This standard
In order to simulate the water leaching conditions of coal and coal gangue under natural conditions, water and coal gangue leaching tests were carried out to determine the pH of the leachate
Value and the concentration of mercury, arsenic, fluorine, copper, nickel, zinc, lead, cadmium and chromium therein. According to the provisions of this standard leaching solution and leaching solution test results, reference
Appendix A to determine the leaching toxicity of coal and coal gangue in order to make a scientific assessment of the environmental impact of coal and coal gangue and take reasonable treatment
Measures.
Coal and coal gangue leaching test methods
1 Scope
This standard specifies the terms and definitions leaching test of coal and coal gangue, method summary, sample processing, leaching, leaching solution determination and test
report.
This standard applies to coal and gangue.
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 211 Determination of total moisture in coal
Preparation of GB/T 474 coal samples
GB/T 3058 Determination of arsenic in coal
Determination of fluorine in GB/T 4633 coal
GB/T 6682 analytical laboratory water specifications and test methods
Determination of chromium, cadmium and lead in coal GB/T 16658
Determination of mercury in coal GB/T 16659
GB/T 19225 Determination of copper, cobalt, nickel, zinc
GB/T 19494.2 Coal mechanized sampling Part 2. Preparation of coal samples
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Leaching leaching
Coal and coal gangue soluble components dissolved, hydration, hydrolysis, carbonation, etc., from the solid phase into the liquid phase process.
3.2
Leaching toxicity
Coal and gangue encounter water leaching, the leaching of harmful elements such as mercury, arsenic, fluorine, copper, nickel, zinc, lead, cadmium and chromium migration and transformation, pollution of the environment, this
Hazardous properties are known as leaching toxicity.
4 method summary
A certain quality and granularity of coal or gangue samples mixed with leaching agent into a sealed leaching vessel, at a certain speed of the flip
After stirring for a certain period of time, the mixer is left to stand, filtered through a slow filter paper, and the pH value of the leachate and the mercury, arsenic, fluorine, copper, nickel, zinc, lead,
Cadmium and chromium concentrations.
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