GB/T 41042-2021Guidance for utilization and classification of content of valuable elements in coal (English PDF)
煤中有价元素含量分级及应用导则
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2021
Implementation date
July 1, 2022
Scope
GB/T 41042-2021 is the English-translated version of 煤中有价元素含量分级及应用导则.
GB/T 41042-2021 gives a scheme for classifying coal by its content of valuable elements such as aluminium, gallium, germanium and lithium, together with the related names and codes, and guiding principles for developing and using those elements.
Normative annexes set out the content classes and utilization guidelines for each of the four elements.
For coal with extra-high contents it asks that the coal properties, the form in which the elements occur, harmful elements and mining conditions be taken into account, and it sets how coal samples are collected, prepared and analysed under the referenced sampling and determination methods.
It applies to evaluating valuable element contents during coal exploration, production, processing, sale and use. It was issued on 31 December 2021 and has applied since 1 July 2022.
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Document preview — GB/T 41042-2021
National Standard of the People's Republic of China
- ICS
- 73.040
- Classification
- D 21
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Terms and definitions5
- 4 Content classification and utilization of valuable elements in coal5
- Annex A (normative) Classification and utilization guidelines of aluminum content in coal7
- Annex B (normative) Classification and utilization guidelines for gallium content in coal8
- Annex C (Normative) Classification and utilization guideline of germanium content in coal9
- Annex D (Normative) Classification and utilization guideline of lithium content in coal10
1 Scope
This Standard specifies the scheme of content classification of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal and the related nomenclature and codes. It also puts forward the guiding principles for the development and utilization of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal.
This Standard is applicable to the evaluation of the content of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal in the process of coal exploration, production, processing, sales and utilization. It guides the development and utilization of valuable element (aluminum, gallium, germanium, lithium, etc.) resources in coal.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 474, Method for preparation of coal sample
GB/T 475, Method for manual sampling of commercial coal
GB/T 482, Sampling of coal seams
GB/T 1574, Test method for analysis of coal ash
GB/T 8207, Determination of germanium in coal
GB/T 8208, Determination of gallium in coal
GB/T 14506.15, Methods for chemical analysis of silicate rocks - Part 15: Determination of lithium content
GB/T 19494.1, Mechanical sampling of coal - Part 1: Method for sampling
GB/T 19494.2, Mechanical sampling of coal - Part 2: Method for sample preparation
MT/T 1034, Method of sampling run-of-mine coal
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Valuable elements in coal
the elements that have high economic value, and a high degree of enrichment in coal, reaching or close to industrial grade, and have potential for development or comprehensive utilization as an industrial deposit
4 Content classification and utilization of valuable elements in coal
4.1 Content classification of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal
The content of aluminum in coal shall be classified according to Annex A. The content of gallium in coal shall be classified according to Annex B. The content of germanium in coal shall be classified according to Annex C. The content of lithium in coal shall be classified in accordance with Annex D.
4.2 Comprehensive utilization of coal with extra-high valuable elements (aluminum, gallium, germanium, lithium, etc.)
4.2.1 The utilization of coal with extra-high valuable elements (aluminum, gallium, germanium, lithium, etc.) shall fully consider the basic technological properties of the coal, the main uses, the occurrence form of aluminum, gallium, germanium, lithium and other elements in the coal, and the relationship with other elements. symbiotic relationship, as well as the occurrence state and distribution law of harmful elements in coal that have adverse effects on extraction of valuable elements.
4.2.2 The mining technical conditions such as the thickness, occurrence, scale and structure of the coal seam, as well as the influence of mining and processing methods on the coal quality shall be fully considered.
4.3 Collection, preparation and determination of coal samples
4.3.1 Collection of coal samples
The coal samples are taken according to GB/T 475, GB/T 482, GB/T 19494.1, MT/T 1034.
4.3.2 Preparation of coal samples
Prepare coal samples in accordance with the provisions of GB/T 474 and GB/T 19494.2. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 482Sampling of coal seams
- GB/T 1574Test method for analysis of coal ash
- GB/T 8207Determination of germanium in coal
- GB/T 8208Determination of gallium in coal
- GB/T 14506.15Methods for chemical analysis of silicate rocks - Part 15: Determination of lithium content
- GB/T 19494.1Mechanical sampling of coal - Part 1: Method for sampling
GB/T 474 · GB/T 475
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Related Standards
GB/T 14506.15-2010 — Methods for chemical analysis of silicate rocks - Part 15: Determination of lithium content
GB/T 1574-2007 — Test method for analysis of coal ash
GB/T 15746.1-1995 — The method of qualitative assessment for vehicle repair
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