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GB/T 31057.3-2018 English PDF

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GB/T 31057.3-2018: Granular materials -- Physical properties -- Part 3: Fluidity index
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Basic data

Standard ID GB/T 31057.3-2018 (GB/T31057.3-2018)
Description (Translated English) Granular materials -- Physical properties -- Part 3: Fluidity index
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A28
Classification of International Standard 19.120
Word Count Estimation 18,154
Date of Issue 2018-12-28
Date of Implementation 2019-07-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 31057.3-2018: Granular materials -- Physical properties -- Part 3: Fluidity index

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Granular materials--Physical properties--Part 3. Fluidity index ICS 19.120 A28 National Standards of People's Republic of China Physical properties test of granular materials Part 3. Measurement of the fluidity index Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test Method 2 5 Results Presentation 6 6 Test Report 7 Appendix A (informative) Liquidity Index Table 8 Appendix B (informative) Jenike Shearing 9 Reference 13

Foreword

GB/T 31057 "Physical Properties Testing of Granular Materials" is divided into three parts. --- Part 1. Measurement of bulk density; --- Part 2. Measurement of tap density; --- Part 3. Measurement of the liquidity index. This part is the third part of GB/T 31057. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is proposed and managed by the National Technical Committee for Particle Characterization and Separation and Screen Standardization (SAC/TC168). This section drafted by. Beijing Powder Technology Association, Anhui Guotai Zhongxin Testing Technology Co., Ltd., Mechanical Science Research Institute Qingdao Branch Institute Co., Ltd., Chizhou Daheng Biochemical Co., Ltd., Beijing Physical and Chemical Analysis and Testing Center, National Non-metallic Mineral Deep Processing Product Quality Supervision Inspection Center, Dandong Baite Instrument Co., Ltd., Guangzhou Bolerfei Viscometer Texturer Technology Service Co., Ltd., Chinese Academy of Sciences Engineering Research Institute, China Institute of Metrology, Zhejiang Ruitang Plastic Technology Co., Ltd., China Machine Productivity Promotion Center. The main drafters of this section. Zhou Suhong, Plateau, Zhang Lixin, Chen Hongzhou, Sun Zhentian, Ma Fei, Song Zhengqi, Dong Qingyun, Ding Xiaotong, Jiang Nan, Pan Junjie, Zhang Wenge, Liu Junjie, Li Zhaojun, Fang Rong, Wang Qifeng, Wen Yuan, Yu Fang, Xu Yimin, Hou Changge. Physical properties test of granular materials Part 3. Measurement of the fluidity index

1 Scope

This part of GB/T 31057 specifies the terms, definitions, measuring instruments and test methods for the flowability index of granular materials. This section applies to the measurement of the fluidity index of powder materials with an average particle size of 5μm~5mm.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6003.1 Test sieves - Technical requirements and testing - Part 1 GB/T 16418 particle system terminology GB/T 19627 particle size analysis photon correlation spectroscopy GB/T 31057.1 Physical properties of granular materials - Part 1 . Measurement of bulk density GB/T 31057.2 Physical properties of granular materials - Part 2. Measurement of tap density

3 Terms and definitions

The following terms and definitions as defined in GB/T 16418 apply to this document. 3.1 Liquidity index flowindex Considering the factors affecting the fluidity of the powder, the parameters used to determine the fluidity of the powder. [GB/T 16418-2008, definition 2.2.5.3] 3.2 Spatula angle angleofspatula Lifting the plate buried in the powder up vertically, the angle between the free surface (bevel) attached to the vertical plate and the plate The average value of the angle after being subjected to vibration, also called the plate angle. 3.3 Angle of repose angleofrepose The maximum angle formed by the free surface of the powder accumulation layer with the horizontal plane in a static equilibrium state, also called the angle of repose. [GB/T 16418-2008, definition 2.2.5.4] 3.4 Compressibility The ability of the powder to be compressed is expressed by the compression ratio obtained under certain test conditions. [GB/T 16418-2008, definition 2.2.5.12] 3.5 Uniformity The width of the particle size distribution of the particulate material.

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