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XB/T 612.1-2019 English PDF

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XB/T 612.1-2019: (Methods for chemical analysis of ferrous iron-boron waste - Part 1)
Status: Valid

XB/T 612.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
XB/T 612.1-2019English209 Add to Cart 3 days [Need to translate] (Methods for chemical analysis of ferrous iron-boron waste - Part 1) Valid XB/T 612.1-2019
XB/T 612.1-2009English279 Add to Cart 3 days [Need to translate] Chemical analysis methods of scraps of neodymium iron boron—Part 1: Determination of total rare earth oxides content—Gravimetry Obsolete XB/T 612.1-2009

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Standard similar to XB/T 612.1-2019

XB/T 619   YS/T 1006.1   YS/T 555.11   XB/T 612.4   XB/T 612.2   XB/T 612.3   

Basic data

Standard ID XB/T 612.1-2019 (XB/T612.1-2019)
Description (Translated English) (Methods for chemical analysis of ferrous iron-boron waste - Part 1)
Sector / Industry Rare Earth Metal Industry Standard (Recommended)
Classification of Chinese Standard H14
Word Count Estimation 9,972
Date of Issue 2019-08-02
Date of Implementation 2020-01-01
Older Standard (superseded by this standard) XB/T 612.1-2009
Regulation (derived from) Natural Resources Department Announcement No. 7 of 2019
Issuing agency(ies) Ministry of Industry and Information Technology

XB/T 612.1-2009: Chemical analysis methods of scraps of neodymium iron boron—Part 1: Determination of total rare earth oxides content—Gravimetry


---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 of scraps of neodymium iron boron-Part 1.Determination of total rare earth oxides content-Gravimetry ICS 77.120.99 H14 Rare Earth Industry Standard of the People's Republic of China XB/T 612.1-2009 Chemical analysis method of NdFeB waste Part 1.Determination of the total amount of rare earth oxides Weight method 2009-12-04 released Implementation of.2010-06-01 Issued by the Ministry of Industry and Information Technology of the People's Republic of China

Foreword

XB/T 612 "NdFeB Waste Chemical Analysis Method" is divided into the following two parts. Part 1.XB/T 612.1-2009 Determination of the total amount of rare earth oxides gravimetric method; Part 2.XB/T 612.2-2009 Determination of 15 rare earth element oxides inductively coupled plasma light Spectrum method. This part is part 1 of XB/T 612. This part was proposed and managed by the National Rare Earth Standardization Technical Committee. The organization responsible for drafting this section. Ganzhou Qiandong Rare Earth Group Co., Ltd. Participated in the drafting of this section. Ganzhou Nonferrous Metal Research Institute, Baotou Rare Earth Research Institute. The main drafters of this section. Yao Nanhong and Chen Jie. Participating drafters of this section. Shan Limei, Hao Qian. XB/T 612.1-2009 Chemical analysis method of NdFeB waste Part 1.Determination of the total amount of rare earth oxides Weight method

1 scope

This part of XB/T 612 specifies the method for determining the total amount of rare earth oxides in NdFeB waste. This section applies to the determination of the total amount of rare earth oxides in NdFeB waste. Measurement range. 5.00% to 70.00%.

2 Principles of the method

The sample is decomposed by acid, and a large amount of iron is pre-separated by oxalic acid precipitation under the condition of pH=2, and the precipitate is burnt to oxidation at 950°C Things. Then use acid to decompose rare earth oxides, precipitate the rare earths in ammonia water, and separate calcium and magnesium. Under the condition of pH=2, use oxalic acid to precipitate and separate the remaining little The amount of iron, aluminum, etc. After ashing, burn the precipitate into oxide at 950°C, weigh its mass, and calculate the total amount of rare earth oxides.

3 Reagents

3.1 Perchloric acid (ρ1.67g/mL). 3.2 Hydrogen peroxide (30%). 3.3 Hydrochloric acid (1+1). 3.4 Nitric acid (1+1). 3.5 Ammonia (1+1). 3.6 Hydrochloric acid lotion. add 4mL hydrochloric acid (3.3) to 100mL water. 3.7 Ammonium chloride-ammonia water lotion. add 2g ammonium chloride and 4ml ammonia water (3.5) to 100ml water. 3.8 Oxalic acid solution (100g/L). 3.9 Oxalic acid lotion (2g/L).

4 Instruments

4.1 High-temperature furnace. temperature >1000℃. 4.2 Platinum crucible. 4.3 Porcelain evaporating dish.

5 Sample

5.1 Slag material, block material. weighed immediately after crushing, grinding and mixing. 5.2 Dry powder. Weigh the sample directly. 5.3 Oily sludge and wet powder. Weigh about 30g sample in a 100ml porcelain evaporating dish, heat it at low temperature to dryness, and burn out the surface oil of the sample Distribute water, cool, and grind immediately.

6 Analysis steps

6.1 Sample Weigh the sample according to Table 1 to the nearest 0.0001g. XB/T 612.1-2009

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