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GB/T 5059.5-2014: Ferromolybdenum -- Determination of silicon content -- Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
Status: Valid GB/T 5059.5: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5059.5-2014 | English | 169 |
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Ferromolybdenum -- Determination of silicon content -- Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
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GB/T 5059.5-2014
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| GB/T 5059.5-1986 | English | 199 |
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Methods for chemical analysis of ferromolybdenum--The gravimetric method for the determination of silicon content
| Obsolete |
GB/T 5059.5-1986
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Basic data | Standard ID | GB/T 5059.5-2014 (GB/T5059.5-2014) | | Description (Translated English) | Ferromolybdenum -- Determination of silicon content -- Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H11 | | Classification of International Standard | 77.100 | | Word Count Estimation | 7,777 | | Date of Issue | 6/9/2014 | | Date of Implementation | 1/1/2015 | | Older Standard (superseded by this standard) | GB/T 5059.5-1986 | | Quoted Standard | GB/T 4010 | | Regulation (derived from) | National Standards Bulletin No. 11 of 2014 | | Issuing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 | | Summary | This Standard specifies the sulfuric acid dehydration gravimetric method and silicon molybdenum blue spectrophotometric determination of molybdenum iron in silicon. This Standard applies to the determination of molybdenum iron silicon content. Measuring r | GB/T 5059.5-2014: Ferromolybdenum -- Determination of silicon content -- Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
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Ferromolybdenum. Determination of silicon content. Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
ICS 77.100
H11
National Standards of People's Republic of China
Replacing GB/T 5059.5-1986
Determination of silicon content in ferromolybdenum
Sulfuric acid dehydration gravimetric method and silicon molybdenum blue spectrophotometry
Issued on. 2014-06-09
2015-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 5059 "ferro molybdenum" is divided into the following sections.
--- Part 1. Determination of molybdenum iron molybdenum content of lead molybdate gravimetric method, ammonium metavanadate titration and 8-hydroxyquinoline gravimetric method;
--- Part 2. Determination of antimony content ferromolybdenum malachite green spectrophotometry;
--- Part 3. Determination of Fe, Cu, Mo Flame atomic absorption spectrometric method;
--- Part 5. Determination of silicon content ferromolybdenum sulfuric acid dehydration gravimetric method and silicon molybdenum blue spectrophotometric method;
--- Part 6. Determination of phosphorus content of iron molybdenum bismuth phosphomolybdate blue spectrophotometric method and the molybdenum blue spectrophotometric method;
--- Part 7. Determination of carbon content ferromolybdenum The infrared absorption method;
--- Part 9. molybdenum iron sulfur content Infrared absorption method and combustion iodometric method.
This section GB/T 5059 Part 5.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB /"ferromolybdenum chemical determination of silicon content - Gravimetric method" T 5059.5-1986. This portion of the GB/T 5059.5-
Compared to 1986, in addition to editorial changes, the major technical changes are as follows.
--- This section adds two. silicon molybdenum blue spectrophotometric method.
--- This section has been revised to a method to increase the content of Chapter 2 and Chapter 9.
--- A method for determining the scope of the original standard "is less than 2.50%" to "0.50% to 2.50%."
This part is proposed by the China Iron and Steel Association.
This part of pig iron and ferroalloy by the National Standardization Technical Committee (SAC/TC318) centralized.
This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd., Liaoning Shen Hong Group Co., Ltd., China Molybdenum
Group Co., Ltd.
The main drafters of this section. Yuan Ping, Zhang Yingjie, high Yumin, Wang Ping ON TRADITIONAL Li Haibo, Tian Yonghong.
This part of the standard replaces the previous editions are.
--- GB/T 5059.5-1986.
Determination of silicon content in ferromolybdenum
Sulfuric acid dehydration gravimetric method and silicon molybdenum blue spectrophotometry
Warning. Use of this section shall be a person experiences regular laboratory work. This section does not indicate that all possible security issues.
Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
GB/T 5059 This section specifies the spectrophotometric determination of molybdenum iron content of sulfuric acid dehydration gravimetric method for silicon and silicon molybdenum blue spectrophotometric.
This section applies to the determination of silicon content in ferromolybdenum. Measurement range (mass fraction). a method of sulfuric acid dehydration gravimetric method ~ 0.50%
2.50%, method two silicon molybdenum blue spectrophotometry 0.01% to 1.00%.
2 Normative references
The following documents for the application of this document is essential, dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 4010 alloy chemical analysis and preparation of samples
3 a method of sulfuric acid dehydration gravimetric method
3.1 Principle
Sample of nitric acid, hydrochloric acid decomposition, sulfuric smoke, the silicon to form insoluble silicates, filtered, washed with burning to constant weight. Join hydrofluoric acid
Li, silicon tetrafluoride silicon was removed by volatilization, and then calcined to constant, by differential weighing before and after treatment of hydrofluoric acid measured silicon content.
3.2 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water.
3.2.1 hydrofluoric acid, ρ = 1.15g/mL.
3.2.2 hydrochloride, ρ = 1.19g/mL.
3.2.3 nitrate, 11.
3.2.4 hydrochloric acid, 14.
3.2.5 hydrochloric acid, 110.
3.2.6 sulfuric acid, 11.
3.3 Sampling and Preparation
In accordance with the provisions of GB/T 4010 will be sampling and sample preparation, the sample should be adopted 0.125mm sieve.
3.4 Analysis Steps
3.4.1 Sample volume
Weigh 1.00g sample, accurate to 0.0001g.
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