GB/T 29656-2013 English PDF

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GB/T 29656-2013: Chemical analysis methods for praseodymium neodymium dysprosium alloy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 29656-2013	759	Add to Cart	6 days	Chemical analysis methods for praseodymium neodymium dysprosium alloy	Valid

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Basic data

Standard ID: GB/T 29656-2013 (GB/T29656-2013)
Description (Translated English): Chemical analysis methods for praseodymium neodymium dysprosium alloy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 33,349
Regulation (derived from): National Standards Bulletin 2013 No. 17
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies: praseodymium, neodymium and dysprosium alloys 39 kinds of ingredients Determination. This standard applies to: praseodymium, neodymium and dysprosium total rare earth alloys, praseodymium, neodymium, dysprosium amount, 15 REE comp

GB/T 29656-2013: Chemical analysis methods for praseodymium neodymium dysprosium alloy

---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.
Chemical analysis methods for praseodymium neodymium dysprosium alloy ICS 77.120.99 H14 National Standards of People's Republic of China Alloys - praseodymium, neodymium and dysprosium Issued on. 2013-09-06 2014-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 1 2 General 3 Determination of total rare earth --- gravimetric method 1 4 Determination of praseodymium, neodymium, dysprosium amount --- inductively coupled plasma atomic emission spectrometry 3 15 REE determination of five components --- X-ray fluorescence spectrometry 6 6 Determination of rare earth impurities --- inductively coupled plasma atomic emission spectrometry [(lanthanum, cerium, samarium, europium, gadolinium, terbium, holmium, erbium, thulium, Ytterbium, lutetium and yttrium) (method a)] and inductively coupled plasma mass spectrometry [(lanthanum, cerium, samarium, europium, gadolinium, erbium, thulium, ytterbium, lutetium and yttrium) (Method II)] 11 7 non-rare earth impurities (iron, silicon, aluminum, calcium, magnesium) --- determination by inductively coupled plasma atomic emission spectrometry 19 8 Determination of the amount of carbon --- high frequency - infrared absorption method 23 Determination of the amount of oxygen --- 9 - Impulse - infrared absorption method 25 10 Determination of chlorine content --- silver nitrate turbidimetry 27

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Committee for Standardization of rare earth (SAC/TC229) centralized. This standard is drafted by. Baotou Rare Earth Research Institute, the National Quality Supervision and Inspection Center of rare earth products. Participated in the drafting of this standard. Ganzhou Qiandong Rare Earth Group Co., Ltd., Beijing Nonferrous Metal Research Institute, Ganzhou Nonferrous Metallurgy RESEARCH Studies, Beijing Iron and Steel Research ng Detection Technology Limited. The main drafters of this standard. red Zhou Kai, Zhao Changyu, Zhao Jing, high Li Zhen, Yu Yong Hai, Wang Anli, love Cui end, Nam Hung Yao Wen Bin, Liu Zhuying, Do Muoi, Wangdong Jie, Liu Pengyu, Bing, Shao Rongzhen, Li Yumei, Zhang Jie surgery, Wu Wenqi, Jiang Tianyi, Yang Ping, Chen Yun red. Alloys - praseodymium, neodymium and dysprosium Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the method for determination of praseodymium, neodymium and dysprosium alloy 39 kinds of ingredients. This standard applies to the total amount of praseodymium, neodymium and dysprosium alloys of rare earth, praseodymium, neodymium, dysprosium amount of 15 REE components, 12 kinds of rare earth impurities (lanthanum, Cerium, samarium, europium, gadolinium, terbium, holmium, erbium, thulium, ytterbium, lutetium, yttrium), 5 non-rare earth impurities (iron, silicon, aluminum, calcium, magnesium) and the amount of carbon, oxygen and chlorine Determination of the amount.

2 General

2.1 When a determination of two or more ingredients, the portion of two methods for the analysis of two overlapping ranges arbitration analysis. 2.2 Unless otherwise stated, the use of recognized analytical reagent only in the analysis; the water is distilled or deionized water or equivalent purity. 2.3 instruments shall be within the test cycle, the performance indicators should meet the technical parameters required for verification. 3 Determination of total rare earth --- gravimetric method 3.1 Determination of Range Determination of total rare earth range 95.00% ~ 99.50%. 3.2 Principle The sample is dissolved in hydrochloric acid, after the smoke off the silicon, rare earth precipitation with ammonia, separating calcium, magnesium and the like. After dissolving the precipitate with oxalic acid precipitate rare earth, will sink Lake at 900 ℃ ~ 950 ℃ burning into oxides, constant weight, weighing determination of rare earth after cooling. 3.3 Reagents and materials 3.3.1 ammonium chloride. 3.3.2 hydrochloric acid (ρ = 1.19g/mL). 3.3.3 hydrochloric acid (11). 3.3.4 hydrochloric acid (298). 3.3.5 Hydrogen peroxide (30%). 3.3.6 nitric acid (ρ = 1.42g/mL). 3.3.7 perchloric acid (ρ = 1.67g/mL). 3.3.8 ammonia water (ρ = 0.90g/mL). 3.3.9 Ammonia (11). 3.3.10 ammonium chloride solution (20g/L). 2g ammonium chloride (3.3.1) dissolved in 100mL of water [aqueous ammonia (3.3.9) the pH was adjusted to ~ 9 10]. ......

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