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YS/T 273.2-2006 PDF English

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YS/T 273.2-2006: Chemical analysis methods and physical properties of cryolite. Part 2: Determination of ignition loss
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Standard ID	USD	BUY PDF	Delivery	Standard Title (Description)	Status
YS/T 273.2-2006	115	Add to Cart	Auto, 9 seconds.	Chemical analysis methods and physical properties of cryolite. Part 2: Determination of ignition loss

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GB/T 1425 GB/T 351 YS/T 273.5

YS/T 273.2-2006: Chemical analysis methods and physical properties of cryolite. Part 2: Determination of ignition loss

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YST273.2-2006
YS NONFERROUS METAL INDUSTRY STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 71.100.10 H 21 Replacing YS/T 273.2-1994 Chemical analysis methods and physical properties of cryolite - Part 2: Determination of ignition loss ISSUED ON: MAY 25, 2006 IMPLEMENTED ON: DECEMBER 1, 2006 Issued by: National Development and Reform Commission of PRC

Foreword ... 3 1 Scope ... 5 2 Method summary ... 5 3 Apparatus ... 5 4 Test sample ... 5 5 Analysis procedure ... 5 6 Calculation of analysis results ... 6 7 Precision ... 6 8 Quality assurance and control ... 7

Foreword

YS/T 273 "Chemical analysis methods and physical properties of cryolite" is divided into 13 parts: -- Part 1: Determination of moisture content - Gravimetric method; -- Part 2: Determination of ignition loss; -- Part 3: Determination of fluoride content; -- Part 4: Determination of aluminum content - EDTA titration method; -- Part 5: Determination of sodium by flame atomic absorption spectrometric method; -- Part 6: Determination of silica content by the molybdenum blue photometric; -- Part 7: Determination of iron content by orthophenantholine photometric method; -- Part 8: Determination of sulfate content - Barium sulfate gravimetric method; -- Part 9: Determination of phosphorus pentoxide content - Molybdenum blue photometric method; -- Part 10: Determination of alumina content by gravimetric method; -- Part 11: Determination of sulphur content by X-ray fluorescence spectrometric method; -- Part 12: The atomic absorption spectrophotometric method for the determination of calcium oxide content; -- Part 13: Preparation and storage of test samples. This Part is Part 2. YS/T 273.2-1994 was rarely used because the method is cumbersome; furthermore, the current trade requires the ignition loss at 550 °C, so this method was redrafted. This Part replaced YS/T 273.2-1994. This Part was proposed by and shall be under the jurisdiction of the National Technical Committee on Nonferrous Metals of Standardization Administration of China. Fushun Aluminium Plant AND China National Nonferrous Metals Industry Standard & Metrology & Quality Research Institute are responsible for the drafting of this Part. Chemical analysis methods and physical properties of cryolite - Part 2: Determination of ignition loss

1 Scope

This Part specifies the method for determination of cryolite ignition loss. This Part applies to the determination of cryolite ignition loss. Determination range: ≤6.00%.

2 Method summary

The sample is burned at 550 °C±5 °C for 30 minutes. The amount of mass reduction after burning is the ignition loss.

3 Apparatus

3.1 High-temperature furnace: The temperature can be controlled at 550 °C±5 °C. 3.2 Platinum crucible: The diameter is 30 mm, the height is 40 mm, and it has a lid.

4 Test sample

The sample shall comply with the requirements of 3.2 in YS/T 273.13.

5 Analysis procedure

5.1 Test portion Weigh 2.5 g of dry test sample (4), accurate to 0.0001 g. 5.2 Number of determinations Two determinations shall be carried out independently and the average value shall be taken. 5.3 Determination 5.3.1 Turn on the high-temperature furnace (3.1), adjust the furnace temperature to ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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