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YS/T 358.2-2011 English PDF

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YS/T 358.2-2011: Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method
Status: Valid
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YS/T 358.2-2011English159 Add to Cart 3 days [Need to translate] Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method Valid YS/T 358.2-2011

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Basic data

Standard ID YS/T 358.2-2011 (YS/T358.2-2011)
Description (Translated English) Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard D43
Classification of International Standard 73.060
Word Count Estimation 6,692
Date of Issue 2011-12-20
Date of Implementation 2012-07-01
Older Standard (superseded by this standard) YS/T 358-1994
Regulation (derived from) ?MIIT Announcement 2011 No.43
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the tantalum iron, determination of iron ore of niobium titanium dioxide content. This standard applies to tantalum iron, determination of niobium titanium dioxide iron ore volume. Measuring range: 0. 05 to 8. 00%.

YS/T 358.2-2011: Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method


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Methods for chemical analysis of tantalite, columbite concentrate.Part 2. Determination of titanium dioxide content.Diantipyrinyl interior spectrophotometric method ICS 73.060 D43 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 358-1994 Chemical analysis of tantalum iron and niobium iron concentrates Part 2. determination of titanium dioxide content Bisanipyrylmethane spectrophotometric method Methodsforchemicalanalysisoftantalite, columbiteconcentrate- Part 2. Determinationoftitaniumdioxidecontent- 2011-12-20 release 2012-07-01 Implementation Issued by the Ministry of Industry and Information Technology of the People's Republic of China

Foreword

YS/T 358 "tantalum iron, niobium iron concentrate chemical analysis method" includes 12 parts. - Part 1. Determination of tantalum and niobium content Paper color layer weight method; - Part 2. Determination of titanium dioxide - Amipyridine methane spectrophotometric method; - Part 3. Determination of silicon dioxide - Mo - Mo - blue spectrophotometric and gravimetric methods; - Part 4. Determination of tungsten trioxide - Thiocyanate spectrophotometric method; - Part 5. Determination of uranium content - Inductively coupled plasma - atomic emission spectrometry; - Part 6. Determination of thorium oxide - Inductively coupled plasma - atomic emission spectrometry; - Part 7. Determination of iron content - Inductively coupled plasma - atomic emission spectrometry; - Part 8. Determination of iron content - Potassium dichromate titration; - Part 9. Determination of antimony content - Inductively coupled plasma - atomic emission spectrometry; - Part 10. Determination of tin content Potassium iodate titration; - Part 11. Determination of manganese content - Atomic absorption spectroscopy; - Part 12. Determination of wet water content - Weight method. This part is Part 2 of YS/T 358. This part replaces YS/T 358-1994 "Tantalum iron, niobium iron concentrate chemical analysis method" (formerly YB874-76) Part III "Titanium dioxide Determination of the amount of (double ananylmethane colorimetric method) ". The main changes in this part compared with the third part of YS/T 358-1994 are as follows. --- gives the lower limit of detection; --- the amount of sample from 0.10g to 0.10g ~ 0.50g; --- increase the precision terms; --- The text format has been modified to increase the quality assurance and control terms. This part is the national nonferrous Metals Standardization Technical Committee (SAC/TC243). This part of the drafting unit. Ganzhou Nonferrous Metallurgy Research Institute, Jiujiang tantalum and niobium limited liability company, Conghua tantalum and niobium smelter, Yichun tantalum and niobium ore. The main drafters of this part. Wang Linsheng, Li Ying, Liu Hong, Xuan Hongjian, Huang Shuang, Deng Yanan, Wang Jia Rong. This part of the previous version of the standard to replace the release of the situation. YB874-76, YS/T 358-1994. Chemical analysis of tantalum iron and niobium iron concentrates Part 2. determination of titanium dioxide content Bisanipyrylmethane spectrophotometric method

1 Scope

This method specifies the determination method of the content of titanium dioxide in tantalum iron and niobium iron concentrate. This method is suitable for the determination of titanium dioxide in tantalum iron and niobium iron concentrate. The measurement range is 0.05% ~ 8.00%.

2 method summary

The samples were melted with potassium pyrophosphate, oxalic acid complexed with tantalum, niobium and tungsten, iron, etc., ascorbic acid reduced iron, controlled acidity, added diantipine Methanol forms a complex with titanium, and its absorbance is measured at a wavelength of 420 nm at a spectrophotometer.

3 reagent

3.1 Potassium pyrophosphate. 3.2 Oxalic acid solution (100g/L). 3.3 ascorbic acid solution (100g/L, with the current distribution). 3.4 Sulfuric acid (1 1). 3.5 leachate. Weigh 5g oxalic acid dissolved in 100mL sulfuric acid solution (19). 3.6 bisanantipyrylmethane solution (20g/L). Weigh 20g of diantipyrylmethane in 500mL hydrochloric acid solution (12), with water Diluted to 1000mL. 3.7 Titanium Dioxide Standard Solution. Weigh 0.1000 g of titanium dioxide [w (TiO2) ≥99.95%] in a 250 mL beaker and add 5 g Ammonium sulfate and 10mL sulfuric acid (ρ1.84g/mL), heated to dissolve completely, remove the cooling, wash the beaker with water and add water to 100mL left Right, heated to dissolve, remove the cooling, into the 1000mL volumetric flask, diluted with water to the mark, mix. The solution 1 mL corresponds to 100 μg Titanium dioxide.

4 instruments

Spectrophotometer.

5 samples

5.1 Specimen size less than 0.074mm. 5.2 samples in 105 ℃ ~ 110 ℃ pre-bake 2h, placed in a dryer to cool to room temperature.

6 Analysis steps

6.1 samples Dispose of the sample (5) in Table 1, accurate to 0.0001g.

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