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GB/T 41042-2021: Guidance for utilization and classification of content of valuable elements in coal Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 41042-2021: Guidance for utilization and classification of content of valuable elements in coal---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT41042-2021 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 73.040 CCS D 21 Guidance for utilization and classification of content of valuable elements in coal ISSUED ON: DECEMBER 31, 2021 IMPLEMENTED ON: JULY 01, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions... 5 4 Content classification and utilization of valuable elements in coal ... 5 Annex A (normative) Classification and utilization guidelines of aluminum content in coal ... 7 Annex B (normative) Classification and utilization guidelines for gallium content in coal ... 8 Annex C (Normative) Classification and utilization guideline of germanium content in coal ... 9 Annex D (Normative) Classification and utilization guideline of lithium content in coal ... 10 Guidance for utilization and classification of content of valuable elements in coal1 ScopeThis 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 referencesThe 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 coal3 Terms and definitionsFor 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 deposit4 Content classification and utilization of valuable elementsin 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. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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