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GB/T 6730.22-2016: Iron ores -- Determination of titanium content -- Diantipyrylmethane spectrophotometric method
Status: Valid GB/T 6730.22: Evolution and historical versions
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| GB/T 6730.22-2016 | English | 199 |
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Iron ores -- Determination of titanium content -- Diantipyrylmethane spectrophotometric method
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GB/T 6730.22-2016
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| GB/T 6730.22-1986 | English | 219 |
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Methods for chemical analysis of iron ores. The diantipyrine methane photometric method for the determination of titanium content
| Obsolete |
GB/T 6730.22-1986
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PDF similar to GB/T 6730.22-2016
Basic data | Standard ID | GB/T 6730.22-2016 (GB/T6730.22-2016) | | Description (Translated English) | Iron ores -- Determination of titanium content -- Diantipyrylmethane spectrophotometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 10,130 | | Date of Issue | 2016-12-13 | | Date of Implementation | 2017-11-01 | | Older Standard (superseded by this standard) | GB/T 6730.22-1986 | | Regulation (derived from) | National Standard Notice No.696 of 2016 | | Issuing agency(ies) | General Administration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 6730.22-2016: Iron ores -- Determination of titanium content -- Diantipyrylmethane spectrophotometric method
---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.
Iron ores - Determination of titanium content - Diantipyrylmethane spectrophotometric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Replace GB/T 6730.22-1986
Determination of Titanium Content in Iron Ore
Diantipyrylmethane spectrophotometric method
2016-12-13 released
2017-11-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 6730 "iron ore" is divided into dozens of parts.
This part is part 22 of GB/T 6730.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part of the replacement GB/T 6730.22-1986 "iron ore chemical analysis method Eran imipramine methane photometric determination of titanium", the Department
Compared with GB/T 6730.22-1986, in addition to editorial changes, the main technical changes are as follows.
--- the name changed to "iron ore content of titanium determination of diantipyrylmethane spectrophotometric method";
- Added "warning" "normative reference document" "test report" content;
--- increase the sodium carbonate - boric acid mixed flux melt pretreatment sample method;
The inter-laboratory precision tests were carried out, and the "allowable difference" was replaced by the statistical repeatability r and the reproducibility limit R.
This part is made by China Iron and Steel Industry Association.
This section is headed by the National Commission on Standardization of Iron Ore and Direct Reductive Iron (SAC/TC317).
This part of the drafting unit. Panzhihua Iron and Steel Group Research Institute Co., Ltd., Panzhihua College, Metallurgical Industry Information Standards Institute, the national vanadium and titanium products
Quality Supervision and Inspection Center.
The main drafters of this part. Zheng Xiaomin, Yang Xinneng, Tian Congxue, Wang Xuemei, Wen Xiangdong, Chen Zhibin, Ren Xiaoqing, Su Yang, Qian Yuxiang,
This part of the previous version of the standard to replace the release of the situation.
--- GB/T 6730.22-1986.
Determination of Titanium Content in Iron Ore
Diantipyrylmethane spectrophotometric method
WARNING - Personnel using this section should have practical experience in formal laboratory work. This section does not indicate all possible security questions
It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.
1 Scope
This part of GB/T 6730 specifies the determination of titanium content by spectrophotometry with diantipyrylmethane.
This part is applicable to the determination of titanium content in iron ore, iron concentrate, sinter and pellet, and the determination range (mass fraction) is 0.006% ~ 1.20%.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) - Part 1. General and definitions
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2. Determination of standard measurement methods
The basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
Preparation of pre - dried samples for analysis of iron ore GB/T 6730.1
Metallurgical products - Chemical analysis - Spectrophotometric methods
Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170
GB/T 10322.1 Iron Ore Sampling and Sample Preparation
GB/T 12806 laboratory glass instrument single standard line capacity bottle
GB/T 12807 Laboratory glass instruments - Index pipettes
GB/T 12808 Laboratory glass instruments Single line suction pipette
3 principle
The sample is acidified by acid decomposition of alkali residue, or directly with sodium carbonate - boric acid mixed with molten salt after acid leaching, in the 1.2mol/L ~ 2.5mol/L salt
Acid medium, with ascorbic acid reduced iron, titanium and diantipyryl methane to form a yellow complex, measured at the wavelength of 385nm its absorbance,
Calculate the titanium content in the sample.
4 Reagents and Materials
Unless otherwise stated, only the reagents identified as analytical reagents and those of Class 3 and Grade 3 in accordance with GB/T 6682 are used in the analysis.
Water or deionized water or water equivalent to its purity.
4.1 mixed flux, 2 parts of anhydrous sodium carbonate and 1 part of boric acid in 105 ℃ ~ 110 ℃ drying, fine grinding and mixing, with the wear bottle storage reserve.
4.2 hydrochloric acid, ρ = 1.19 g/mL.
4.3 nitric acid, ρ = 1.42 g/mL.
4.4 Hydrochloric acid, 1 1.
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