YS/T 358.12-2012Methods for chemical analysis of tantalite, columbite concentrate. Part 12: Determination of water content. Gravimetric method (English PDF)
钽铁、铌铁精矿化学分析方法 第12部分：湿存水量的测定重量法
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Issued by
Ministry of Industry and Information Technology
Level / Type
National · Recommended
Issue date
January 1, 1970
Implementation date
January 1, 1970
Scope
YS/T 358.12-2012 is the English-translated version of 钽铁、铌铁精矿化学分析方法 第12部分：湿存水量的测定重量法.
YS/T 358.12-2012 — This method specifies tantalum iron, determination of the content of water in the wet ferro-niobium concentrate. This method is suitable for iron, tantalum, niobium iron ore in measured hygroscopic water. Measurement range. 0.10 to 5.00%.
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Document preview — YS/T 358.12-2012
National Standard of the People's Republic of China
- ICS
- 73.060
- Classification
- D 43
Issued by: Ministry of Industry and Information Technology
Contents
- Foreword
- 1 Scope
- 2 Method summary
- 3 Instrument
- 4 Sample
- 5 Step, Analysis
- 5.1 Sample
- 5.3 Determination
Foreword
YS/T 358 "iron tantalum, niobium, iron ore chemical analysis method" includes 12 parts.
--- Part 1. tantalum, niobium determining the amount of paper colored layer gravimetric method
--- Part 2. Determination of titanium dioxide content of the double security for DAM spectrophotometry
--- Part 3. Determination of silicon dioxide content and weight of molybdenum blue spectrophotometric method
--- Part 4. Determination of the amount of tungsten trioxide Thiocyanate spectrophotometric
--- Part 5. Determination of uranium by inductively coupled plasma atomic emission spectrometry
--- Part 6. thorium oxide content - Inductively coupled plasma atomic emission spectrometry
--- Part 7. Determination of iron content by inductively coupled plasma atomic emission spectrometry
--- Part 8. Determination of the amount of ferrous dichromate method
--- Part 9. Determination of antimony content by inductively coupled plasma atomic emission spectrometry
--- Part 10. Determination of tin content potassium iodate titration
--- Part 11. Determination of the amount of manganese atomic absorption spectrometry
--- Part 12. hygroscopic water - Gravimetric method this section YS/T Part 12 358.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is drafted. Ganzhou Nonferrous Metallurgy Research Institute, Jiujiang Tantalum Niobium limited liability company, Conghua Tantalum-Niobium smelter.
1 Scope
This method specifies tantalum iron, determination of the content of water in the wet ferro-niobium concentrate.
This method is suitable for iron, tantalum, niobium iron ore in measured hygroscopic water. Measurement range. 0.10 to 5.00%.
2 Method summary
The sample was 105 °C ~ 110 °C drying, with the reduction method to calculate wet storage level.
3 Instrument
Ovens.
4 Sample
Samples should be placed in a sealed container, isolated from the air.
5 Step, Analysis
5.1 Sample
Weighed 100.0g sample (4), accurate to 0.001g.
5.2 Determination of the number of Two independent measurement averaged.
5.3 Determination
A sample (5.1) is placed in advance at 105 °C ~ 110 °C drying to constant weight weighing dish. In a thermostatic oven at 105 °C ~ 110 °C Drying 2h. Removed, placed in the dryer cooled to room temperature weigh, and repeatedly drying to constant weight.
NOTE. Before weighing dish containing a sample to be dried in the oven thermostat 1h. Removed, placed in a drying dish. Cool to room temperature (about 30min), weighed, and is repeated Row to constant weight.
Calculation results of the analysis of 6 the content of water in the trap wet wet mass fraction w (H2O) and its value is expressed in%, according to equation (1).
w (H2O) =
(M1-m2)
(M1-m0) ×
100 (1)
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 4 pages — is available in the English PDF.
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Related Standards
YS/T 358.1-2025 — Chemical Analysis of Tantalum and Niobium Iron Concentrate - Part 1: Determination of Tantalum and Niobium Content - Weighing Method and X-Ray Fluorescent Spectrometry
YS/T 358.10-2011 — Methods for chemical analysis of tantalite, columbite concentrate. Part 10: Determination of tin content. Potassium iodate titrimetric method
YS/T 358.11-2011 — Methods for chemical analysis of tantalite, columbite concentrate. Part 11: Determination of manganese content. Flame atomic absorption spectrometry
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