YS/T 820.3-2013 English PDF

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SN/T 1537   GB/T 2007.1   YS/T 820.21   YS/T 820.11   YS/T 820.10   

Basic data

Standard ID: YS/T 820.3-2013 (YS/T820.3-2013)
Description (Translated English): [YS/T 820.3-2012] Chemical analysis of nickel laterite Part 3: Determination of total iron content of potassium dichromate titration
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: D04
Regulation (derived from): Industry standard filing Notice 2013 No. 1 (No. 157 overall)
Issuing agency(ies): Ministry of Industry and Information Technology

YS/T 820.3-2012: Methods for chemical analysis of laterite nickel ores - Part 3: 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 for chemical analysis of laterite nickel ores.Part 3. Determination of total iron content.Potassium dichromate titration ICS 73.060 D04 People's Republic of China Nonferrous Metals Industry Standard Methods for chemical analysis of nickel laterite ore Part 3. Determination of total iron content Dichromate method Part 3. Determinationoftotalironcontent-Potassiumdichromatetitration Issued on. 2012-11-07 2013-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This section drafted in accordance with GB/T 1.1-2009 given rules. YS/T 820-2012 "Methods for chemical analysis of nickel laterite ore" is divided into 26 parts. --- Part 1. Determination of nickel content by flame atomic absorption spectrometry; --- Part 2. Determination of the amount of nickel dimethylglyoxime spectrophotometry; --- Part 3. Determination of total iron content of dichromate method; --- Part 4. Determination of phosphorus content - Molybdenum blue spectrophotometric method; --- Part 5. Determination of cobalt content by flame atomic absorption spectrometry; --- Part 6. Determination of copper content - Flame atomic absorption spectrometry; --- Part 7. Determination of calcium and magnesium content by flame atomic absorption spectrometry; --- Part 8. Determination of the amount of silica silicon potassium fluoride titration; --- Part 9. scandium, cadmium content - Inductively Coupled Plasma - Mass Spectrometry; --- Part 10. calcium, cobalt, copper, magnesium, manganese, nickel, zinc and phosphorus content - Inductively Coupled Plasma - Atomic Emission Spectrometry; --- Part 11. Determination of the amount of fluorine and chlorine ion chromatography; --- Part 12. Determination of manganese content by flame atomic absorption spectrometry; --- Part 13. Determination of lead content by flame atomic absorption spectrometry; --- Part 14. Determination of zinc content - Flame atomic absorption spectrometry; --- Part 15. Determination of cadmium content by flame atomic absorption spectrometry; --- Part 16. carbon, sulfur content was measured by high frequency combustion infrared absorption spectroscopy; --- Part 17. arsenic, antimony, bismuth contents hydride generation - atomic fluorescence spectrometry; --- Part 18. Determination of mercury content - Cold atomic absorption spectrometry; --- Part 19. Determination of energy aluminum, chromium, iron, magnesium, manganese, nickel and silicon content dispersive X-ray fluorescence spectrometry; --- Part 20. Determination of aluminum content by EDTA titration; --- Part 21. Determination of chromium content ammonium ferrous sulfate titration; --- Part 22. Determination of magnesium content EDTA titration; --- Part 23. cobalt, iron, nickel, phosphorus, aluminum oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide volume Wavelength dispersive X-ray fluorescence spectrometry; --- Part 24. Determination of hygroscopic water weight method; --- Part 25. Determination of combined water content - Gravimetric method; --- Part 26. Determination of loss on ignition - Gravimetric method. This section YS/T 820-2012 Part 3. This method is a method of arbitration. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard by the Beijing General Research Institute of Mining and Metallurgy, People's Republic of China Bayuquan Exit Inspection and Quarantine, Jinchuan Group Ltd, Drafted. This section is drafted. Beijing Mining Research Institute, Research Institute of Nonferrous Metals, Guangzhou, Tianjin, People's Republic of China Entry-Exit Inspection and Quarantine Bureau, Inspection and Quarantine of People's Republic of China Changshu drafted. Participated in the drafting of this section. Henan Monash Technology Co., People's Republic of China Bayuquan Exit Inspection and Quarantine, Silver billion mining and metallurgy Guangxi Science and Technology Co., Ltd., Shandong Xinhai Technology Co., Ltd. The main drafters of this section. Nguyen Cinnamon, ginger seeking Tao, Gao Ying Jian, Dai Fengying, Li Yi, Hou Jian book, Liu Feng, Political Civilization Plasture Xie Hui, From Madrid, Wang Yan, Cui Anfang, Lifeng Long, more than what the king more winter Liuhong Song, Sun Fengfei. Methods for chemical analysis of nickel laterite ore Part 3. Determination of total iron content Dichromate method

1 Scope

This section YS/T 820 specifies the method for determination of total iron laterite nickel ore content. This section applies to the determination of total iron content lateritic nickel ore. Measuring range. 7.00% - 55.00%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. YS/T 820.24-2012 Methods for chemical analysis of nickel laterite Part 24. hygroscopic water - Gravimetric method

3 Method summary

Sample to fusion with sodium peroxide, leaching the cooled melt with water, and then acidified with hydrochloric acid. Most of the iron from the stannous chloride reduction of the remaining Reduction of iron from titanium trichloride. Oxidation with potassium dichromate solution excess reducing agent, sodium diphenylamine sulfonate as indicator, with drops of potassium dichromate standard Fixed titration reduced iron amount.

4 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 4.1 sodium peroxide. 4.2 hydrochloride (ρ1.19g/mL). 4.3 sulfate (ρ1.84g/mL). 4.4 phosphoric acid (ρ1.70g/mL). 4.5 Hydrogen peroxide (≥30%). 4.6 hydrochloride (11). 4.7 parathion mixed acid The 200mL phosphoric acid (4.4) injection of about 500mL of water, and then added with stirring 300mL of sulfuric acid (4.3), mix, water cooling To room temperature. 4.8 potassium dichromate solution (0.25g/L). 4.9 stannous chloride solution (100g/L). 10g of stannous chloride (SnCl2 · 2H2O) was dissolved in 20mL of hydrochloric acid (4.6), the solution was heated in a water bath Solutions diluted with water to 100mL. Using now. Titanium trichloride solution 4.10. Volume 9 with hydrochloric acid (4.2) was diluted with 1 volume of a solution of titanium trichloride (about 15% titanium trichloride solution). Using now. 4.11 potassium dichromate standard titration solution (0.008334mol/L) ......

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