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GB/T 45480-2025 English PDF

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GB/T 45480-2025: Manganese ores and concentrates - Determination of aluminium content - Photometric and gravimetric methods
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PDF similar to GB/T 45480-2025


Standard similar to GB/T 45480-2025

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Basic data

Standard ID GB/T 45480-2025 (GB/T45480-2025)
Description (Translated English) Manganese ores and concentrates - Determination of aluminium content - Photometric and gravimetric methods
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D32
Classification of International Standard 73.060.20
Word Count Estimation 22,212
Date of Issue 2025-03-28
Date of Implementation 10/1/2025
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 45480-2025: Manganese ores and concentrates - Determination of aluminium content - Photometric and gravimetric methods


---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 73.060.20 CCSD32 National Standard of the People's Republic of China Determination of aluminum content in manganese ores and concentrates Photometry and gravimetry (ISO 4295.1988,MOD) Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is modified to adopt ISO 4295.1988 "Manganese ores and concentrates - Determination of aluminium content - Photometric and gravimetric methods". Compared with ISO 4295.1988, this document has many structural adjustments. Appendix A lists the differences between this document and ISO 4295.1988. Comparison table of structural number changes. This document has many technical differences compared to ISO 4295.1988.The clauses involved in these differences have been marked in the outer margins. The vertical single line (|) at the position is marked, and a list of corresponding technical differences and their reasons is given in Appendix B. Please note that some of the contents of this document may involve patents, and the issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Pig Iron and Ferroalloys (SAC/TC318). This document was drafted by. Qingdao Bozheng Inspection Technology Co., Ltd., Qingdao Customs Technology Center, Qingdao Yuancheng Chuangzhi Technology Co., Ltd., China Certification & Inspection Group Hebei Co., Ltd., Chongqing Customs Technical Center, Qingdao Dehong Jinxin Technology Co., Ltd., Qingdao University of Technology, Rizhao Customs Comprehensive Technical Service Center, Zhoushan Customs Comprehensive Technical Service Center, Nanning Customs Technical Center, and Metallurgical Industry Information Standards Research Institute. The main drafters of this document are. Guan Song, Xu Xiaoming, Ma Li, Song Fei, Ding Shibing, Zhang Yuesheng, Huang Ping, Zhang Xiaoyan, Zhang Caili, Li Lulin, Hu Fenjing, Wang Gang, Wu Qianhua, Tang Mengqi, Chen Hailin, Zhang Qingjian, Fan Yu, Li Fei, Feng Lili, Li Jiao, Wang Shaona, Wu Yajun, and Lu Chunsheng. Determination of aluminum content in manganese ores and concentrates Photometry and gravimetry Warning---People who use this document should have practical experience in formal laboratory work. This document does not address all possible safety issues. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national laws and regulations.

1 Scope

This document describes the spectrophotometric and gravimetric determination of the aluminium content of manganese ores and concentrates. This document is applicable to the determination of aluminum content in manganese ore and manganese concentrate. Method A Photometric method, determination range (mass fraction). 0.1%~ 1.5%; Method B. Gravimetric method, determination range (mass fraction). greater than 1.5%.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 2011 Sampling and sample preparation methods for bulk manganese ore GB/T 6379.2 Accuracy (trueness and precision) of measurement methods and results Part 2.Determination of repeatability of standard measurement methods Basic methods of sex and reproducibility GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 8170 Rules for rounding off values and expression and determination of limit values GB/T 12806 Laboratory glassware single-line volumetric flasks GB/T 12807 Laboratory glassware graduated pipettes GB/T 12808 Laboratory glassware single-line pipettes GB/T 14949.8 Determination of wet water content of manganese ore - Gravimetric method JJG119 Laboratory pH (acidity) meter JJG178 UV, Visible, Near Infrared Spectrophotometer

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Method A Photometric method

4.1 Principle The sample was decomposed with hydrochloric acid and nitric acid, then dissolved with hydrochloric acid, and the solution was evaporated to dryness twice. The insoluble residue was separated by filtration, the filter paper containing the residue was burned, and the residue was treated with sulfuric acid and hydrofluoric acid. The melt is dissolved in hydrochloric acid and the resulting solution is combined with the main solution.

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