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YS/T 555.1-2009: Methods for chemical analysis of molybdenum concentrate. Determination of molybdenum content. Lead molybdenum gravimetry
Status: Valid YS/T 555.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 555.1-2009 | English | 169 |
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Methods for chemical analysis of molybdenum concentrate. Determination of molybdenum content. Lead molybdenum gravimetry
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YS/T 555.1-2009
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| YS/T 555.1-2006 | English | 199 |
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Molybdenum concentrates. Determination of molybdenum content
| Obsolete |
YS/T 555.1-2006
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Basic data | Standard ID | YS/T 555.1-2009 (YS/T555.1-2009) | | Description (Translated English) | Methods for chemical analysis of molybdenum concentrate. Determination of molybdenum content. Lead molybdenum gravimetry | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H14;D43 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 6,618 | | Date of Issue | 2009-12-04 | | Date of Implementation | 2010-06-01 | | Older Standard (superseded by this standard) | YS/T 555.1-2006 | | Regulation (derived from) | MIIT [2009] No. 66 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the determination of molybdenum in molybdenum method. This standard applies to the determination of molybdenum in molybdenum concentrates. Measuring range: �� 40%. This section does not apply to the tungsten content greater than 2% of molybdenum in molybdenum content. | YS/T 555.1-2009: Methods for chemical analysis of molybdenum concentrate. Determination of molybdenum content. Lead molybdenum gravimetry
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Methods for chemical analysis of molybdenum concentrate.Determination of molybdenum content.Lead molybdenum gravimetry
ICS 77.120.99
H14
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 555.1-2006
Chemical analysis of molybdenum concentrate
Determination of molybdenum content by molybdate weight method
2009-12-04 released
2010-06-01 Implementation
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Foreword
YS/T 555 "Molybdenum concentrate chemical analysis method" includes 11 parts.
Methods for chemical analysis of molybdenum concentrates - Determination of molybdenum content - Lead molybdate weight method YS/T 555.1
YS/T 555.2 Methods for chemical analysis of molybdenum concentrates - Determination of silicon dioxide - Mo - Mo - blue spectrophotometric and gravimetric methods
YS/T 555.3 Methods for chemical analysis of molybdenum concentrates - Determination of arsenic content - Atomic fluorescence spectrometry and DDTC-Ag spectrophotometric method
Methods for chemical analysis of molybdenum concentrates - Determination of tin content - Atomic fluorescence spectrometric method YS/T 555.4
Methods for chemical analysis of molybdenum concentrates - Determination of phosphorus content - Phosphorolybdenum blue spectrophotometric method YS/T 555.5
YS/T 555.6 Methods for chemical analysis of molybdenum concentrates - Determination of copper, lead, bismuth and zinc - Flame atomic absorption spectrometric method
YS/T 555.7 Methods for chemical analysis of molybdenum concentrates - Determination of calcium oxide - Flame atomic absorption spectrometric method
YS/T 555.8 Methods for chemical analysis of molybdenum concentrates - Determination of tungsten content Thiocyanate spectrophotometric method
YS/T 555.9 Methods for chemical analysis of molybdenum concentrates - Determination of potassium and sodium content - Flame atomic absorption spectrometric method
YS/T 555.10 Methods for chemical analysis of molybdenum concentrates - Determination of the amount of rhenium Thiocyanate spectrophotometric method
Methods for chemical analysis of molybdenum concentrates - Determination of total oil and moisture content - Gravimetric method YS/T 555.11
This section is part 1.
This part replaces YS/T 555.1-2006 "Molybdenum concentrate chemical analysis method Determination of molybdenum content" (the original GB/T 15079.1-1994).
This section compares with YS/T 555.1-2006 as follows.
--- add ammonia to precipitate iron and other impurities before the solution by adding a small amount of filter pulp;
The rate of addition of lead acetate solution is defined as 1 mL/3 s;
--- increase the precision terms;
--- The text format has been modified to supplement the quality assurance and control terms.
This part of the National Nonferrous Metals Standardization Technical Committee proposed and centralized.
This part is responsible for drafting units. Jinduicheng Molybdenum Industry Group Co., Ltd., China Nonferrous Metals Industry Standard Measurement Quality Institute.
This part participates in the drafting unit. Luoyang Luanchuan Molybdenum Group Co., Ltd., Jiangxi Copper Company (Dexing) Mine New Technology Development Co., Ltd.
the company.
The main drafters of this part. Wang Zhongqi, Zhang Jiangfeng, Zhang Xiaopu, Zhang Min, Tian Wenhui, Ma Yongxiang.
This part of the main verifier. Tian Yonghong, beam Binqiang, Li Hongjun.
This part of the previous version of the standard to replace the release of the situation.
--- GB/T 15079.1-1994;
YS/T 555.1-2006.
Chemical analysis of molybdenum concentrate
Determination of molybdenum content by molybdate weight method
1 Scope
This section specifies the determination of molybdenum content in molybdenum concentrates.
This part is applicable to the determination of molybdenum content in molybdenum concentrate. Measuring range. ≥ 40%.
This part does not apply to the determination of molybdenum content in molybdenum concentrate with a tungsten content greater than 2%.
2 method summary
Samples by nitric acid - potassium chlorate saturated solution decomposition, precipitation of impurities with ammonia, filtration. The filtrate was washed with acetic acid-ammonium acetate buffer medium
Acid lead precipitation solution in the molybdate to produce lead molybdate, precipitation by filtration, burning, called constant weight. Ammonia after separation of molybdenum with thiocyanate
Salt spectrophotometric determination to be corrected.
3 reagent
Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity were used in the analysis.
3.1 mixed flux. Weigh 500g anhydrous sodium carbonate, 250g zinc oxide, mixed grinding, preserved in the grinding bottle.
3.2 Ammonium nitrate.
3.3 Hydrochloric acid (ρ1.19g/mL).
3.4 nitric acid (ρ1.42g/mL).
3.5 ammonia (ρ0.90g/mL).
3.6 nitric acid - potassium chlorate saturated solution.
3.7 Hydrochloric acid (1 + 1).
3.8 hydrochloric acid solution (1 + 19).
3.9 Sulfuric acid (1 + 1).
3.10 Ammonia (1 + 1).
3.11 aqueous ammonia solution (3 + 97).
3.12 Sodium hydroxide solution (200 g/L).
3.13 Acetic acid-ammonium acetate buffer solution. Weigh 250g of ammonium acetate in a 1000mL beaker, add 500mL of water dissolved, add
150 mL of acetic acid, filtered, diluted with water to 1000 mL, and mixed.
3.14 Ferric chloride solution (48 g/L). Weigh 48 g of ferric chloride (FeCl3 · 6H2O) in 50 mL of hydrochloric acid (3.3) and diluted with water
To 1000mL, mix well.
3.15 ammonium nitrate solution (30g/L). Weigh 30g ammonium nitrate dissolved in 1000mL water, with ammonia (3.10) adjusted to pH8 ~ pH9.
3.16 ammonium acetate solution. measure 25mL acetic acid - ammonium acetate buffer solution (3.13), diluted with water to 500mL, and mix.
3.17 lead acetate solution (18g/L). Weigh 18g of lead acetate in a 1000mL beaker, add 15mL of glacial acetic acid, dissolved in 80mL water,
After filtration, dilute to 1000 mL with water.
3.18 potassium thiocyanate solution (300 g/L).
3.19 Thiourea solution (50 g/L).
3.20 Sulfuric acid - copper sulfate solution. Weigh 1 g of copper sulfate (CuSO4 · 5H2O) in a 1000 mL beaker, add 1000 mL of sulfuric acid
(3.9) dissolved and mixed.
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