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YS/T 953.8-2014: Methods for chemical analysis of fire smelting nickel substrate material. Part 8: Determination of iron content. Titanium trichloride reduction-potassium dichromate titrimetric method
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Methods for chemical analysis of fire smelting nickel substrate material. Part 8: Determination of iron content. Titanium trichloride reduction-potassium dichromate titrimetric method
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YS/T 953.8-2014
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Basic data | Standard ID | YS/T 953.8-2014 (YS/T953.8-2014) | | Description (Translated English) | Methods for chemical analysis of fire smelting nickel substrate material. Part 8: Determination of iron content. Titanium trichloride reduction-potassium dichromate titrimetric method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.40 | | Word Count Estimation | 7,752 | | Date of Issue | 10/14/2014 | | Date of Implementation | 4/1/2015 | | Quoted Standard | GB/T 20066 | | 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 potassium dichromate titration pyrometallurgical nickel substrate compound of iron content. This section applies to the determination of pyrometallurgical nickel substrate compound of iron content. Determination of the range of | YS/T 953.8-2014: Methods for chemical analysis of fire smelting nickel substrate material. Part 8: Determination of iron content. Titanium trichloride reduction-potassium dichromate titrimetric method
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Methods for chemical analysis of fire smelting nickel substrate material Part 8. Determination of iron content Titanium trichloride reduction-potassium dichromate titrimetric method.
ICS 77.120.40
H13
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis pyrometallurgical nickel substrate material
Part 8. Determination of iron content
Reduction of titanium trichloride - potassium dichromate titration
Part 8. 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 953 "pyro-metallurgical materials for chemical analysis of nickel substrate" is divided into 11 parts.
--- Part 1. Determination of the amount of nickel dimethylglyoxime spectrophotometry and dimethylglyoxime gravimetric method;
--- Part 2. Determination of the amount of silicon silicon molybdenum blue spectrophotometric method and perchloric acid dehydration gravimetric method;
--- Part 3. Determination of phosphorus content of bismuth phosphorus molybdenum blue spectrophotometric method;
--- Part 4. Determination of chromium content ammonium ferrous sulfate titration;
--- Part 5. Determination of manganese content - Potassium periodate spectrophotometric method;
--- Part 6. Determination of cobalt content of 5-Cl-PADAB spectrophotometry and flame atomic absorption spectrometry;
--- Part 7. Determination of copper content bicyclic cyclohexanone oxalyl Spectrophotometric Method and flame atomic absorption spectrometry;
--- Part 8. Determination of iron content of titanium trichloride reduction - potassium dichromate titration;
--- Part 9. Carbon and sulfur content was measured high-frequency combustion infrared absorption method;
--- Part 10. nickel, chromium, manganese, cobalt, copper, phosphorus content - Inductively coupled plasma atomic emission spectrometry;
--- Part 11. lead, arsenic, cadmium, mercury content - Inductively Coupled Plasma Mass Spectrometry.
This section YS/T Section 8 953.
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. Zhongbao Binhai Nickel Industry Co., Ltd.
This section is drafted. Guangdong Industrial Technology Research Institute (Guangzhou Nonferrous Metal Research Institute), Zhongbao Binhai Nickel Industry Co., Ltd.
This section involved in the drafting unit. People's Republic of China Bayuquan Exit Inspection and Quarantine, Inspection and Quarantine of People's Republic of China, Nantong.
The main drafters of this section. Dai Fengying, Xujie Yu, Xie Hui, Zhou M, Liu Xianbin, Baiyan Ru Shen Ya-hong, Liutian Ping, Wang Yan, Li Weigang,
Dingju Xiang, Zhou Lu.
Methods for chemical analysis pyrometallurgical nickel substrate material
Part 8. Determination of iron content
Reduction of titanium trichloride - potassium dichromate titration
1 Scope
YS/T of the provisions of section 953 determination pyrometallurgical nickel substrate compound iron dichromate method.
This section applies to the determination of pyrometallurgical nickel substrate compound of iron content. Determination of the range of 70.00% ~ 95.00%.
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.
GB/T 20066 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method
3 Method summary
Sample was dissolved in hydrochloric acid, nitric acid, hydrogen fluoride, ammonium perchlorate heightening smoke rush fluorine, ammonia - ammonium chloride separation. Sodium tungstate chosen as indicator,
Titanium trichloride as reducing agent, reduction of high iron, titanium trichloride with an excess of potassium dichromate oxidation. Diphenylamine sulfonate as indicator with dichromate
Potassium Standard Solution titration of iron content.
4 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity of its water.
4.1 ammonium chloride.
4.2 ammonium hydrogen fluoride.
4.3 hydrochloric acid (ρ = 1.19g/mL).
4.4 hydrochloride (11).
4.5 hydrochloric acid (595).
4.6 nitric acid (ρ = 1.42g/mL).
4.7 perchloric acid (ρ = 1.67g/mL).
4.8 sulfate (ρ = 1.84g/mL).
4.9 phosphoric acid (ρ = 1.69g/mL).
4.10 sulfuric acid - phosphoric acid mixed. A 150mL sulfuric acid (4.8) while stirring the water injection 700mL, 150mL added phosphoric acid (4.9),
Cooling, and mix.
4.11 aqueous ammonia (ρ = 0.90g/mL).
4.12 ammonia (595).
4.13 ammonium chloride solution (20g/L).
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