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YS/T 360.2-2011 English PDF

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YS/T 360.2-2011: Methods of chemical analysis for ilmenite concentrate. Part 2: Determination of total iron content. Potassium dichromate titration
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YS/T 360.2-2011English159 Add to Cart 3 days [Need to translate] Methods of chemical analysis for ilmenite concentrate. Part 2: Determination of total iron content. Potassium dichromate titration Valid YS/T 360.2-2011

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Basic data

Standard ID YS/T 360.2-2011 (YS/T360.2-2011)
Description (Translated English) Methods of chemical analysis for ilmenite concentrate. Part 2: Determination of total iron content. Potassium dichromate titration
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H64
Classification of International Standard 77.120.90
Word Count Estimation 6,699
Date of Issue 2011-12-20
Date of Implementation 2012-07-01
Older Standard (superseded by this standard) YS/T 360-1994
Regulation (derived from) ?MIIT Announcement 2011 No.43
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for the determination of total iron content of ilmenite concentrates. This section applies to the determination of total iron content of ilmenite concentrates. Measurement range of from 1. 00% to 45. 00%.

YS/T 360.2-2011: Methods of chemical analysis for ilmenite concentrate. Part 2: Determination of total iron content. Potassium dichromate titration


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods of chemical analysis for ilmenite concentrate.Part 2. Determination of total iron content.Potassium dichromate titration ICS 77.120.90 H64 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 360-1994 Chemical analysis of ilmenite concentrates Part 2. determination of total iron content Potassium dichromate titration Part 2. Determinationoftotalironcontent- 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 360 "ilmenite concentrate chemical analysis method" is divided into six parts. - Part 1. Determination of titanium dioxide - Ammonium sulfate titration; - Part 2. Determination of total iron content - Potassium dichromate titration; - Part 3. Determination of the amount of ferrous oxide - Potassium dichromate titration; - Part 4. Determination of the amount of alumina - EDTA titration; - Part 5. Determination of silicon dioxide - Mo - Mo - blue spectrophotometric method; Part 6. Determination of calcium oxide, magnesium oxide, and phosphorus content - Plasma emission spectrometric method. This section is part 2 of YS/T 360. This part replaces the fourth part of YS/T 360-1994 "Chemical Analysis Method for Titanium Ore (Concentrate) Concentrate" (YB878-76) "All iron Of the determination ". Compared with YS/T 360-1994, the main changes are as follows. Specified range. 1% to 45%. - the formula used in international units of measurement; --- reaffirm the allowable difference; --- increase the repeatability limit. This standard is proposed by the National Committee for Standardization of Nonferrous Metals (SAC/TC243). The drafting unit of this standard. Zunyi Titanium Industry Co., Ltd., Jinchuan Group Co., Ltd., Yunnan Xinli Nonferrous Metals Co., Ltd., Fushun Titanium Industry Co., Ltd., China Nonferrous Metals Industry Standard Measurement Quality Institute. The main drafters of this standard. Liu Ping, Zhang Jinjie, Luo Lin, Yu Shengjie, Zhang Jian, Zhuang Jun, Zhang Jiangfeng. This part of the previous version of the standard to replace the release of the situation. --- YB878-1976; --- YS/T 360-1994. Chemical analysis of ilmenite concentrates Part 2. determination of total iron content Potassium dichromate titration

1 Scope

This part of YS/T 360 specifies the method for the determination of total iron content in ilmenite concentrates. This section applies to the determination of total iron content in ilmenite concentrates. The measurement range is 1.00% to 45.00%.

2 method summary

The sample was melted with potassium pyrophosphate and acid leached. In the hot dilute hydrochloric acid solution, the excess amount of stannous chloride was used to reduce the ferric chloride to ferrous iron. Too The amount of stannous chloride was oxidized with mercuric chloride, adding sulfuric acid-phosphoric acid mixed acid, diphenylamine sulfonate as indicator, and titration solution with potassium dichromate standard Liquid titration to stable purple for the end.

3 reagent

3.1 Potassium pyrophosphate. 3.2 Hydrochloric acid (1 1). 3.3 Hydrochloric acid (5 95). 3.4 Sulfuric acid-phosphoric acid mixed acid. 150 mL of sulfuric acid (ρ about 1.84 g/mL) was slowly poured into 700 mL of water with stirring, cooled to room temperature, Add 150 mL of phosphoric acid (ρ about 1.70 g/mL) and mix well. 3.5 Stannous chloride solution. 10 g of stannous chloride (SnCl2 · 2H2O) was weighed in 10 mL of hot hydrochloric acid (ρ about 1.19 g/mL) Diluted to 100 mL. filter. When used with the preparation. 3.6 solution of diphenylamine sulfonate (2g/L). 3.7 Mercury dichloride. Saturated solution. 3.8 potassium dichromate standard titration solution (c1/6K2Cr2O7 = 0.03000mol/L). Weigh 2.9418g reference reagent potassium dichromate (in advance 150 ℃ bake 2h, and placed in a dryer to cool to room temperature), dissolved in water, into the.2000mL volumetric flask, diluted with water to the mark, Mix well.

4 sample

4.1 The sample size should not be greater than 90μm. 4.2 samples in advance at 105 ℃ ~ 110 ℃ baking 2h, placed in a dryer, cooled to room temperature.

5 Analysis steps

5.1 Sample Weigh 0.200g sample, accurate to 0.0001g.

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