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YS/T 990.9-2014: Methods for chemical analysis of copper matte． Part 9: Determination of iron content Potassium dichromate titration method
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Methods for chemical analysis of copper matte． Part 9: Determination of iron content Potassium dichromate titration method
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YS/T 990.9-2014
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Basic data | Standard ID | YS/T 990.9-2014 (YS/T990.9-2014) | | Description (Translated English) | Methods for chemical analysis of copper matte�� Part 9: Determination of iron content Potassium dichromate titration method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 6,678 | | Date of Issue | 10/14/2014 | | Date of Implementation | 4/1/2015 | | Regulation (derived from) | People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180) | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This Standard specifies the method for determination of copper matte iron content. This section applies to the determination of copper ice iron content in the range of 10.0% -48.0 measured%. | YS/T 990.9-2014: Methods for chemical analysis of copper matte． Part 9: Determination of iron content Potassium dichromate titration method
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Methods for chemical analysis of copper matte. Part 9. Determination of iron content Potassium dichromate titration method
ICS 77.120.30
H13
People's Republic of China Nonferrous Metals Industry Standard
Matte chemical analysis
Part 9. Determination of iron content
Dichromate method
Part 9. Determinationofironcontent-
Issued on. 2014-10-14
2015-04-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 990 "Methods for chemical analysis of copper matte" is divided into 18 parts.
--- Part 1. Determination of copper content iodometry;
--- Part 2. Determination of gold and silver atomic absorption spectroscopy and fire assay;
--- Part 3. Determination of sulfur content - Gravimetric method and combustion titration method;
--- Part 4. Determination of the amount of bismuth atomic absorption spectrometry;
--- Part 5. Determination of the amount of fluorine ion selective electrode method;
--- Part 6. Determination of lead content - Atomic absorption spectrometry and Na2EDTA titration;
--- Part 7. Determination of cadmium content - Atomic absorption spectrometry;
--- Part 8. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry, diethyl dithiocarbamate spectrophotometry silver
And potassium bromate titration;
--- Part 9. Determination of iron content dichromate method;
--- Part 10. Determination of silicon dioxide content molybdenum blue spectrophotometric method and silicon potassium fluoride titration;
--- Part 11. Determination of the amount of nickel atom absorption spectrometry;
--- Part 12. Determination of the amount of chromium oxide of aluminum Azure S Spectrophotometry;
--- Part 13. Determination of magnesium oxide content - Atomic absorption spectrometry;
--- Part 14. Determination of the amount of zinc atomic absorption spectrometry and Na2EDTA titration;
--- Part 15. Determination of antimony content - Atomic absorption spectrometry;
--- Part 16. Determination of mercury content - Cold atomic absorption spectrometry;
--- Part 17. Determination of the amount of cobalt atomic absorption spectrometry;
--- Part 18. lead, zinc, nickel, arsenic, bismuth, antimony, calcium, magnesium, cadmium, cobalt content - Inductively coupled plasma atomic emission spectrometry.
This section YS/T Section 9990 of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is responsible for drafting unit. Zhongtiaoshan Nonferrous Metals Group Co., Ltd. Daye Nonferrous Metals Group Holdings Limited.
This section is drafted. Zhongtiaoshan Nonferrous Metals Group Co., Ltd.
It participated in the drafting of this section. Baiyin Nonferrous Metals Group Co., Ltd., Yunnan Copper Co., Ltd., Beijing Mining and Metallurgy Research Total
Hospital, Fujian Zijin Mining Testing Technology Co., Ltd., Shandong constant state Smelting Co., Ltd., Tongling Nonferrous Metals Group Holdings Co., Ltd.,
Exit Inspection and Quarantine of the People's Republic of Tianjin, Zhejiang Huayou Cobalt Co., Ltd., Guangzhou Nonferrous Metal Research Institute.
The main drafters of this section. TRANSACTIONS Ma Lijun, Li Jing, Lim Huiping, Qin Yuying, Wangdong Zhen, Chen Jinxia, Zheng Wenying, Li Ruiling, Chen Yan,
Feng advanced Zhanghong Xian, Zhangyue Lin, Magofuku red, Houhui Nan, Wang Jinping, Fu Yuxia, Shiyan, Xie Bohua, Han Jie, Dai Fengying, Zhang Jin.
Matte chemical analysis
Part 9. Determination of iron content
Dichromate method
1 Scope
This section YS/T 990 specifies the method for determination of copper matte iron content.
This section applies to the determination of copper in ice iron content was measured in the range of 10.0% ~ 48.0%.
2 Method summary
Samples with hydrochloric acid, nitric acid decomposition of sulfur mixed with ammonia precipitation of iron, so that separation of copper and the substrate, in hydrochloric acid medium, large reduction with stannous chloride
Part of the iron, leaving a small amount of sodium tungstate as an indicator of iron, titanium trichloride reduction, parathion mixed acid was added to diphenylamine 4-sulfonate as indicator
Titration with potassium dichromate standard titration solution.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 ammonium chloride.
3.2 hydrochloric acid (ρ = 1.19g/mL).
3.3 hydrochloride (11).
3.4 hydrochloride (15).
3.5 hydrochloric acid (595).
3.6 nitric acid (ρ = 1.42g/mL).
3.7 sulfate (ρ = 1.84g/mL).
3.8 phosphoric acid (ρ = 1.69g/mL).
3.9 sulfur nitrate mixed acid (73). A 30mL sulfuric acid (3.7) with constant stirring slowly inject 70mL of nitric acid (3.6), cooled to room temperature.
3.10 parathion mixed acid. A 150mL sulfuric acid (3.7) with constant stirring slowly into 700mL of water, cooled to room temperature, 150mL P
Acid (3.8), mix, cool to room temperature.
3.11 aqueous ammonia (ρ = 0.88g/mL).
3.12 ammonia - ammonium chloride solution. 2mL ammonia diluted with water (3.11) to 100mL, plus 2g of ammonium chloride (3.1) and shake.
3.13 stannous chloride solution (60g/L). Weigh 6g stannous chloride dissolved in 20mL hot hydrochloric acid (3.2), diluted with water to 100mL,
Mix well.
3.14 titanium trichloride solution (114). Pipette solution of titanium trichloride 2mL 15% to 20% (mass concentration), diluted with hydrochloric acid (3.4) to
30mL, mix well. The time is now equipped with.
3.15 copper sulphate solution (5g/L). Weigh 0.78g of copper sulfate pentahydrate dissolved in 100mL of water, and mix.
3.16 sodium tungstate solution (250g/L). Weigh 25g of sodium tungstate dissolved in an appropriate amount of water, was added 5mL phosphate (3.8), diluted with water to
100mL, and mix.
3.17 potassium dichromate standard titration solution [c (1/6K2Cr2O7 = 0.0500mol/L)]. Weigh 2.4517g baseline potassium dichromate (previously
At 150 ℃ baking 1h), placed in 250mL beaker, add a small amount of water to dissolve moved 1000mL volumetric flask, diluted with water to the mark,
Mix well.
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