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YS/T 358.10-2011 English PDF

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YS/T 358.10-2011: Methods for chemical analysis of tantalite, columbite concentrate. Part 10: Determination of tin content. Potassium iodate titrimetric method
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YS/T 358.10-2011English159 Add to Cart 3 days [Need to translate] Methods for chemical analysis of tantalite, columbite concentrate. Part 10: Determination of tin content. Potassium iodate titrimetric method Valid YS/T 358.10-2011

PDF similar to YS/T 358.10-2011


Standard similar to YS/T 358.10-2011

YS/T 254.1   GB/T 27682   GB/T 17413.1   YS/T 358.12   YS/T 358.1   YS/T 358.11   

Basic data

Standard ID YS/T 358.10-2011 (YS/T358.10-2011)
Description (Translated English) Methods for chemical analysis of tantalite, columbite concentrate. Part 10: Determination of tin content. Potassium iodate titrimetric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard D43
Classification of International Standard 73.060
Word Count Estimation 6,634
Date of Issue 2011-12-20
Date of Implementation 2012-07-01
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 niobium tin content of iron concentrates. This standard applies to tantalum iron, determination of niobium tin amount of iron ore concentrate. Measuring range: 1. 00% to 20. 00%.

YS/T 358.10-2011: Methods for chemical analysis of tantalite, columbite concentrate. Part 10: Determination of tin content. Potassium iodate titrimetric method


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Methods for chemical analysis of tantalite, columbite concentrate.Part 10. Determination of tin content.Potassium iodate titrimetric method ICS 73.060 D43 People's Republic of China Nonferrous Metals Industry Standard Chemical analysis of tantalum iron and niobium iron concentrates Part 10. determination of tin content Potassium iodate titration Methodsforchemicalanalysisoftantalite, columbiteconcentrate- Part 10. Determinationoftincontent- Potassiumiodatetitrimetric method 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 section is part 10 of YS/T 358. 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. This part of the main drafters. Kuang Jing, Yang Feng, Wan Yusong, Huang Shuang, Deng Yanan. Chemical analysis of tantalum iron and niobium iron concentrates Part 10. determination of tin content Potassium iodate titration

1 Scope

This method specifies the determination method of tin content in tantalum iron and niobium iron concentrate. This method is suitable for the determination of tin content in tantalum iron and niobium iron concentrate. The measurement range is 1.00% ~ 20.00%.

2 method summary

The sample is melted with sodium peroxide, leached with water, and the tin is separated from most of the iron, titanium, niobium, tantalum and the like. In hydrochloric acid solution, tin (IV) Aluminum was reduced to tin (Ⅱ), starch as an indicator, with potassium iodate standard solution titration, calculate the amount of tin.

3 reagent

3.1 Sodium peroxide. 3.2 Aluminum [w (Al) ≥99.9%]. 3.3 Hydrochloric acid (ρ1.19g/mL). 3.4 anhydrous ethanol. 3.5 saturated sodium bicarbonate solution. 3.6 Starch solution (10g/L). Weigh 5g of soluble starch, placed in a 500mL beaker, dissolved in.200mL of boiling water and boiled 2min, cooling. Also called 50g potassium iodide in a 500mL beaker, dissolved in 250mL water. The two solutions were mixed and diluted with water To 500 mL, mix well. 3.7 tin standard solution. weighed 2.0000g metal tin [w (Sn) ≥ 99.95%] in 250mL beaker, add 50mL hydrochloric acid (3.3), completely dissolved in a water bath, then add 50mL hydrochloric acid (3.3), cooling, into the 1000mL volumetric flask, diluted with water Degree, mix. This solution 1 mL corresponds to 2 mg of tin. 3.8 potassium iodate standard solution 3.8.1 Preparation. Weigh 0.64g potassium iodate, 2.5g potassium iodide, 0.3g sodium hydroxide, placed in a 500mL beaker, add.200mL Water, heated to completely dissolved, with glass wool solution will be filtered in 1000mL volumetric flask, diluted with water to the mark, mix. 3.8.2 Calibration. draw 10.00mL tin standard solution (3.7) in 300mL Erlenmeyer flask (with the blank test), add 50mL Water, 50 mL of hydrochloric acid solution (3.3), 2 g of aluminum sheet (3.2), covered with a large volume of saturated sodium bicarbonate solution (3.5) Heating and boiling, so that aluminum completely dissolved, remove, in the water to cool to room temperature. Remove the lid's funnel and add 2 mL of the starch solution (3.6) Potassium iodate standard solution (3.8.1) titration appears stable light blue and purple, that is, the end point. According to formula (1) calculation of potassium iodate standard titration solution on tin The titer of T. T = ρ · V1 V2-V0 (1) Where. T - potassium titanate standard titration solution on the titration of tin in milligrams per milliliter (mg/mL); ρ --- tin standard solution concentration in milligrams per milliliter (mg/mL);

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