GB/T 6730.85-2023 English PDFUS$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 6730.85-2023: Iron ores - Preparation and certification of certified reference materials for use in chemical analysis Status: Valid
Basic dataStandard ID: GB/T 6730.85-2023 (GB/T6730.85-2023)Description (Translated English): Iron ores - Preparation and certification of certified reference materials for use in chemical analysis Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D31 Classification of International Standard: 73.060.10 Word Count Estimation: 22,293 Date of Issue: 2023-08-06 Date of Implementation: 2024-03-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 6730.85-2023: Iron ores - Preparation and certification of certified reference materials for use in chemical analysis---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. ICS 73.060.10 CCSD31 National Standards of People's Republic of China Certified standard samples for chemical analysis of iron ore Preparation and valuation chemical analysis Published on 2023-08-06 2024-03-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 85 of GB/T 6730 "Iron Ore". The published parts of GB/T 6730 are shown in Appendix A. This document is modified to adopt ISO 11459.1997 "Preparation and preparation of certified standard samples for chemical analysis of iron ore certified standard samples" Value". The technical differences and reasons between this document and ISO 11459.1997 are as follows. a) Added normative references to GB/T 6379.1 and GB/T 27418 (see Chapter 3) to apply to my country’s technical conditions; b) Replaced ISO Guide30.1992 (see Chapter 3) with normatively quoted GB/T 15000.2 to conform to my country’s actual conditions Condition; c) Replaced ISO 11323.1996 (see Chapter 3) with the normatively cited GB/T 20565 to comply with the actual situation in my country; d) The term "best evaluation" in ISO 11459.1997 has been deleted, the definition of "candidate standard sample" has been added, and the "standard sample" has been changed. "Product", "Certified standard sample", "Uniformity", "Uniformity between units", "Stability", "Validity period", "Sample", "Test sample", "Uniformity within the unit" "Standard value", "uncertainty", "accuracy", "inter-laboratory test", "precision", "correctness", "bias", "reference method", "determination" "value", "standard sample certificate", "standard sample development report" and "standard sample producer" (see Chapter 3), in order to comply with my country's The actual situation; e) ISO 4701 (see 4.3) was replaced with normatively cited GB/T 10322.7 to conform to the actual situation in my country; f) “Preparation and processing” (see 5.1) has been changed to conform to the actual application in my country; g) Added normative reference to GB/T 10322.1 (see 5.1) to comply with actual application in my country; h) Added normative references to GB/T 15000.3 (see 5.1, 5.2.4, 5.3, 6.3.4.3, B.3) to comply with the actual situation in our country application; i) Added "stability assessment and monitoring" (see 5.3) to comply with practical applications in my country; j) The “Analysis Method” (see 6.2) has been changed to conform to the actual application in my country; k) "Selection of laboratories", "Number of laboratories p", "Determination of standard values and their uncertainty" and "Acceptance criteria of standard values" have been changed (See 6.3), in order to comply with the actual application in our country; l) The "Standard Sample Certificate Contents" (see Chapter 7) has been changed to conform to the actual application in my country; m) Annex A of ISO 11459.1997 "Confirmation of homogeneity of candidate standard samples by results of inter-laboratory tests" has been changed to comply with The practical application in my country (see Appendix B); n) The ISO 11459.1997 Appendix B "Detailed Calculation of Variance Analysis" has been deleted to comply with the actual application in our country. The following editorial changes have been made to this document. a) In order to coordinate with the existing standards, the name of the standard is changed to "Preparation and Valuation of Certified Standard Samples for Chemical Analysis of Iron Ore"; b) Added “Note” in “Laboratory Selection” (see 6.3.3.1); c) Changed the “Note” in “Periodic Review of Standard Values” (see Chapter 8); d) Added Appendix A (informative) "Constituting Documents of GB/T 6730"; e) Replaced ISO 5725-2.1994 with the informative GB/T 6379.2, and replaced ISO 5725-4 with GB/T 6379.4. 1994 (see C.2, C.3); f) Changed “Using Iron Ore Certified Standard Samples to Control the Accuracy in the Application of Standard Methods” in Appendix C (see C.3); g) Change ISO 11459.1997 Appendix D (Informative) to "Reference". Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the China Iron and Steel Industry Association. This document is under the jurisdiction of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317). This document was drafted by. Shanghai Customs Industrial Products and Raw Materials Testing Technology Center, Maanshan Metrology and Testing Institute, Anhui Changjiang Steel Iron Co., Ltd., Panxi Vanadium and Titanium Inspection and Testing Institute, Xiamen Weihaotai Technology Co., Ltd., and Metallurgical Industry Information Standards Research Institute. The main drafters of this document. Liu Shu, Yan Chenglin, Min Hong, Zhu Zhixiu, Li Chen, Zhang Yafei, Wu Zhicheng, Chen Rong, Sun Hao, Li Zijing, Zhang Zhihuan, Chen Zibin, Zhu Rong.IntroductionIron ore is the main raw material in the steel industry. Among the standard systems in the steel field, the standard system for determination of chemical composition of iron ore is one of the standard systems. It is a very important part and plays an important role in ensuring the quality of iron ore products. This series of method standards serve the production of iron ore production, trade and application, providing technical support for the high-quality development of my country's steel industry. GB/T 6730 includes a series of standards for the determination of chemical composition of iron ore, which respectively stipulates the moisture, total iron, and metal content in iron ore products. Iron, ferrous iron, silicon, aluminum, calcium, magnesium, sulfur, phosphorus, manganese, titanium, total rare earths, barium, chromium, vanadium, tin, copper, cobalt, nickel, zinc, niobium, bismuth, potassium, sodium, carbon, lead, arsenic, Determination of chemical components such as cadmium, mercury, fluorine, chlorine, loss on ignition and combined water. In 1986, GB/T 6730 released 51 national standards for the determination of chemical composition of iron ore for the first time. With iron ore field analysis With the development of technology and actual production needs, a relatively complete standard system has been formed through continuous revision work over the years. Current See Appendix A for details of the constituent documents of GB/T 6730. Certified standard samples for chemical analysis of iron ore Preparation and valuation1 ScopeThis document specifies the physical properties, preparation, determination, content of standard sample certificates, and standard values of iron ore certified standard samples for chemical analysis. Periodic review, customer record requirements. This document is applicable to the preparation and determination of certified standard samples of iron ore for chemical analysis.2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 6379.1 Accuracy of measurement methods and results (correctness and precision) Part 1.General principles and definitions (GB/T 6379.1- 2004,ISO 5725-1.1994,IDT) GB/T 10322.1 Iron ore sampling and sample preparation methods (GB/T 10322.1-2014, ISO 3082.2009, IDT) GB/T 10322.7 Sieve determination of particle size distribution of iron ore and direct reduced iron (GB/T 10322.7-2016, ISO 4701. 2008,IDT) GB/T 15000.2 Standard Sample Work Guide Part 2.Commonly used terms and definitions (GB/T 15000.2-2019, ISO Guide 30.2015,IDT) GB/T 15000.3 Standard sample working guidelines (3) General principles and statistical methods for determining the value of standard samples (GB/T 15000.3- 2008,ISO Guide35.2006,IDT) GB/T 20565 Iron ore and direct reduced iron terminology (GB/T 20565-2022, ISO 11323.2010, IDT) GB/T 27418 Evaluation and expression of measurement uncertainty (GB/T 27418-2017, ISO /IEC Guide98-3.2008, MOD)3 Terms and definitionsThe following terms and definitions as defined in GB/T 6379.1, GB/T 15000.2, GB/T 20565 and GB/T 27418 apply to this document. document. 3.1 iron ore ironore Any natural or processed rock, mineral or ore aggregate from which iron can be commercially produced. Note. Iron ore contains one or several main iron-containing minerals. a) Reddish-brown hematite, maghemite and pseudo-hematite; b) Magnetite; c) Hydrated iron oxides, including goethite, limonite and bog ironite; d) Iron carbonates, including siderite or nodular siderite, ankerite and other mixed carbonates; e) Roasted pyrite or pyrite slag; f) Sometimes it is ferrite (such as calcium ferrite) produced in natural ores, mainly molten pellets and sintered bodies. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 6730.85-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 6730.85-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 6730.85-2023_English with my colleagues?Answer: Yes. 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