GB/T 29526-2013 General Technical Terms for Powder Processing GB/T29526-2013 Standard compression package decompression password: www.bzxz.net
This standard specifies the basic concepts, basic characteristics and detection, processing and treatment related to powder processing and their definitions. This standard is applicable to the technical fields related to powder processing. ||
tt||This standard was drafted in accordance with the rules given in GB/T1.1-2009 and GB/T20001.1-2001.
This standard was proposed and managed by the National Technical Committee for Particle Characterization and Sorting and Screen Standardization (SAC/TC168).
The responsible drafting unit of this standard: Tsinghua University.
The drafting organizations of this standard include: Southeast New Materials Co., Ltd., Hefei Cement Research and Design Institute, Wuhan University of Technology, China Machinery Productivity Promotion Center, Changxing Tsinghua Powder and New Materials Engineering Center Co., Ltd., Xuzhou Yichuang Chemical Technology Co., Ltd., Mianyang Xijin Technology Development Co., Ltd., Jinan Luxin New Building Materials Co., Ltd., Guangxi Guilin Jinshan Chemical Co., Ltd., Shanghai Dagong New Materials Co., Ltd., Bengbu Huayang Powder Technology Co., Ltd., China Kaolin Company, Beijing Huanya Tianyuan Machinery Technology Co., Ltd., Shandong Golden Sun Zirconium Co., Ltd., Southwest University of Science and Technology, China National Materials International Engineering Co., Ltd. Tianjin Branch, Hebei Huabo Fine Chemical Co., Ltd., Shanxi Tianyi Nanomaterials Technology Co., Ltd., Guilin Shengxing Machinery Manufacturing Co., Ltd., Zhejiang Fengli Crushing Equipment Co., Ltd., University of Jinan, Wuxi Tsinghua Lvfeng Technology Development Co., Ltd., and Hefei University.
The main drafters of this standard are: Gai Guosheng, Yang Yufen, Li Leng, Ye Jing, Bao Wei, Wu Xihai, Yu Fang, Hou Changge, Xing Zheng, Chen Mengbo, Ren Chaofu, Li Peiyan, Li Shiling, Gong Jijiang, Su Xianjun, Wang Wei, Sun Wei, Liu Biao, Ding Ming, Li Shuangyue, Yu Weimin, Hao Jianzhong, Guo Xiujuan, Xiao Xiancheng, Yu Shaohuo, Li Wancai, Wu Chengbao, He Zhenquan, Shang Zhixin, Weng Xingxing.
The following documents are indispensable for the application of this document. For any dated referenced document, only the dated version applies to this
document. For any undated referenced document, the latest version (including all amendments) applies to this document.
GB/T16418—2008 Terminology of particle systems
ISO/TS27687 Nanotechnologies—Terminology and definitions for nano-objects, nanoparticles, nanofibre and nanoplate
Foreword
III
1 Scope1
2 Normative references1 3
Terms and definitions1
3.1 Basic terms1
3.2 Basic characteristics and detection2
3.3 Processing and treatment4
3.4 Other links12
Appendix A (Normative Appendix) Fault and handling, auxiliary links, process measurement and control, etc.13
References15
Index16

ICS 19.120
National Standard of the People's Republic of China
GB/T29526—-2013
Powder processing techniques-General terminologyPublished on June 9, 2013
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
Implementation on March 1, 2014
Normative references
Terms and definitions
Basic terms
Basic characteristics and detection
3.3 Processing and treatment
3.4 ​​Other links
Appendix A (Normative Appendix)
Reference Wen Lin
Fault and handling, auxiliary links, process measurement and control, etc. GB/T 29526--2013
This standard starts with the rules given in GB/T 1.12009 and GB/T 20001.1--2001. GB/T29526—2013
This standard is proposed and managed by the National Technical Committee for Particle Characterization and Sorting and Screen Standardization (SAC/TC168). The responsible drafting unit of this standard: Tsinghua University. The participating drafting units of this standard: Southeast New Materials Co., Ltd., Hefei Cement Research and Design Institute, Wuhan University of Technology, China Machinery Productivity Promotion Center, Changxing Tsinghua Powder and New Materials Engineering Center Co., Ltd. Xuzhou Yichuang Chemical Technology Co., Ltd., Mianyang Xijin Technology Development Co., Ltd., Jinan Luxin New Building Materials Co., Ltd., Guangxi Gua Lin Jinshan Chemical Co., Ltd., Shanghai Dagong New Materials Co., Ltd., Banghuayang Powder Technology Co., Ltd., China Kaolin Company, Beijing Huanya Tianyuan Machinery Technology Co., Ltd., Shandong Jintaiyang Zirconium Co., Ltd., Southwest University of Science and Technology, China National Materials International Engineering Co., Ltd. Dajin Branch, Hebei Huabo Fine Chemical Co., Ltd., Shanxi Dayi Nanomaterials Technology Co., Ltd., Guilin Shengxing Machinery Manufacturing Co., Ltd., Zhejiang Fengli Crushing Equipment Co., Ltd., Jinan University, Wuxi Tsinghua University Lvfeng Technology Development Co., Ltd., Hefei University. The main drafters of this standard are: Gai Guosheng, Yang Yufen, Li Leng, Ye Jing, Bao Wei, Wu Xihai, Yu Fang, Hou Changge, Xing Zheng, Chen Mengbo, Ren Chao, Li Ta, Ji Shiling, Gong Jijiang, Su Xiankan, Yu Wei, Sun Wei, Liu Biao, Ding Ming, Ji Yanyue, Yu Weimin, Hao Jianzhong, Guo Juan, Qiao Xiancheng, Yu Shaohuo, Li Wancai, Hao Chengbao, He Zhenquan, Shang Zhixin, Weng Lixing
General technical terms for powder processing
GB/T29526—2013
This standard specifies the basic concepts, basic characteristics and tests closely related to powder processing, and the general technical terms and definitions involved in processing and treatment
This standard is applicable to the technical fields related to powder processing. 2 Normative references
The following documents are indispensable for the application of this document. For all referenced documents with a date, only the version with the date is applicable to this document. For any undated referenced document, the latest version (including all amendments) applies to this document. GB/T16418—2008 Particle system terminology
ISO/TS 27687 NanotechnologiesTerminology and definitions for nanomaterials, nanoparticles, nanofibre and nanoplate
Terms and definitions
The following terms and definitions apply to this document. 3.1 Basic terms
Terms for the basic range and categories of powders.
Powder
A collection of solid particles of a certain size,
Standard powder
A powder with stable and uniform physical and chemical properties within the validity period and with detectable characteristic values. 3.1.3
Micron powder
micrometcr powder
aggregate of particles with a size of less than 100 μm. 3.1.4
sub-micron powder
aggregate of particles with a size of less than 1 um. 3.1.5
nano powder
nanomcter powder
aggregate of particles with a size of less than 100 nm. :3.1.6
Ⅱnatural powder
natural body
aggregate of naturally formed particles.
GB/T 29526-—2013
biological powder
aggregate of biomass particles.
Composite powdercarnpositepowden
A collection of multi-component particles. From the perspective of particles, composite is orderly and uniform. 3. 1.9
Mixed powdermixedpowder
A mixture of multiple powders.
Powder with uniformityPowder with small and similar shapes. 3. 1. 11
Functional powderfunctiuaal powder
Powder with or endowed with a certain function. 3. 2Basic characteristics and detection
Basic terms indicating powder performance and detection. 3.2.1
Particle size distribution particlesizedistribution The percentage of particles in different particle size intervals to the total amount of powder. There are two ways to express it: frequency distribution and cumulative distribution. Note: Particle size distribution has several ways of expression, such as number particle size distribution, area particle size distribution, volume particle size distribution and mass particle size distribution. They are related to material characteristics, detection and data processing methods. 3.2.2
Characteristic particle sizesizeofspecificity
The characteristic size that describes the size and grade of powder particles is expressed by the symbol, where I refers to the cumulative distribution percentage of particles less than or equal to a certain size; that is, D refers to the particle size corresponding to when the cumulative distribution fraction of particles in the powder reaches %. Example 1: Powder with characteristic particle size Ds, = 10.μm, means that 97% of the particles in the powder have a particle size of less than or equal to 10μm; Example 2: Powder with characteristic particle size D = 10μm, means that 75% of the particles in the powder have a particle size of less than or equal to 10m; Example 3: Powder with characteristic particle size D1s-10μm, means that 10% of the particles in the powder have a particle size of less than or equal to 10μm.
Note: The particle size to be characterized can be expressed by number characteristic particle size, length characteristic particle size, area characteristic particle size, volume characteristic particle size, mass characteristic particle size, etc., which is related to material characteristics, detection and data processing methods. 3.2. 3
Median size
The particle size corresponding to the characteristic particle size Dsa, that is, the particle size corresponding to the white fraction of the cumulative distribution of particles reaches 50%. If De=10μm, it means that the amount of particles greater than or equal to 10μm in the powder accounts for 50% of the total amount of powder, and the amount of particles with a diameter of 10μtn also accounts for 50% of the total amount of powder.
Average particle size
The average particle size calculated by mathematical simulation based on the particle size analysis results. Ds is also a way to express the average particle size. 2
GB/T 29526—2013
Note: The average particle size can be expressed in terms of length average particle size, area average particle size, volume average particle size, and mass average particle size, which are related to the detection and data processing methods; the main mathematical simulation calculation methods include arithmetic mean method, geometric mean method, harmonic mean method, volume average method, and mass average method. 3.2.5
Voidage/vold fraction
The sum of the volume of the voids between particles in the powder layer (empty volume) and the volume of the measurable pores (openings) on the surface of the particles as a percentage of the bulk volume of the powder.
Bulk density/apparent densityThe ratio of the mass of the powder to its free bulk volume, that is, the mass of the powder freely filled per unit volume under specified conditions. 3.2.7
Tap density
The ratio of the mass of the powder after vibration to its bulk volume, that is, the mass of the powder per unit volume measured after vibration under specified conditions.
Flowability
The ability of the powder to move under the action of force, 3.2.9
angle of repose
The angle between the slope of the pyramid and the horizontal plane after the powder is naturally accumulated. 3.2.10
dispersibility
The ability of a single particle to be evenly distributed in the continuous phase in a dispersion medium. 3.2.11
coefficient of internal friction
The ratio of the shear force to the hammer force acting on the sliding layer when the powder layer is about to slide and fail. 3.2.12
angle of internal friction
The tangent of the internal friction angle is equal to the internal friction coefficient. 3.2.13
sampling
sampling
The process of obtaining representative samples.
Splitting sample
The process of dividing a representative sample into smaller samples for testing. 3.2.15
Sample preparation
The process of preparing the sample to be tested according to the requirements of the testing equipment and characterization method. 3.2.16
Density characterizationdensity characterizationThe process of determining the mass and volume of a powder. 3.2.17
Size analysis
The process of detecting the particle size distribution and determining the characteristic particle size. 3
GB/T 29526-—2013
Particle image analysisThe process of analyzing the particle size, shape and surface roughness based on a two-dimensional projection image. 3.3 Processing and treatment
The process of preparing materials into powder products and other related processing. 3.3. 1
storage
The process of storing powder materials in a specific place. 3.31.1
inventorystorage
Inventory storage
The process of storing powder materials for a long time, mostly in silos. 3.3.1.2
Buffer storage
The process of storing powder materials for a short time, with a certain impact and homogenization effect, mostly in small silos. 3.3.1.3
Feed storage
The process of storing powder materials for a short time in a specific place, for the purpose of feeding, mostly in hoppers. 3.3.2
Feeding
The process of feeding materials into the receiving device. 3. 3.2.1
continuns feeding
the process of feeding materials uniformly and continuously into a receiving device. 3. 3. 2. 2
batch feeding
the process of feeding materials intermittently into a receiving device. 3.3.2.3
metering feeding
the process of feeding materials obliquely into a receiving device and measuring their mass, volume or concentration. 3. 3. 2. 4
vibration feeding
the process of feeding materials uniformly and continuously into a receiving device with the help of the driving effect of vibration. 3.3.2.5
screw feeding
the process of feeding powder materials uniformly and continuously into a receiving device with the help of the driving effect of the rotating screw. 3.3.3
conveying
The process of conveying by mechanical means or fluid power. 3.3.3, 1
belt conveying
The process of conveying by rotating a ring belt driven by a wheel. 4
elevating conveying
The process of conveying by driving a rotating wheel to lift a bucket. 3.3.3.3
hydraulic conveying
The process of conveying by using a solid-liquid two-phase flow. 3. 3. 3. 4
pneumatic conveying
pneumatic conveying
The process of conveying by using a gas-solid two-phase flow. 3.3.3.5
screw conveying
screw convcying
screw convcying
screw convcying
screw convcying 3.3.3.6
Conveying scalebzxZ.net
conveying scale
The product of conveying volume and conveying distance.
Erushing/grinding/pulverizingThe process of reducing particle size.
Wet grinding
The process of grinding in water or other liquid media. 3.3.4.2
Dry grinding
The process of grinding in air or other gaseous media. 3.3.4.3
Continuous grinding
GB/T 29526—2013
The process of continuously feeding the material to be processed into the grinding device (or system) and at the same time, the pulverized material is discharged in time.
Batch grinding
A certain amount of material to be processed is sent into the grinding device (or system) at one time, and the crushed material is discharged after a certain period of time, that is, the material input and discharge are not carried out at the same time.
Open-circuit grindingOpen-circuit grindingThe material to be processed is processed by the grinding device (or system) at one time and then discharged as a product. 3.3.4.6
Closed-circuit grindingThe material after grinding is sent to the classification device outside the grinding device for classification, and the particles smaller than the specified size are discharged from the grinding system as products, and the particles larger than the specified size are returned for further processing. 3.3.4.7
Low-temperature grindingThe process of using the lifting method to ensure the effective grinding process. 5
GB/T 29526—2013
Surface grinding
The grinding process mainly based on surface grinding under the action of external forces such as friction and shear. 3.3. 4.9
Volume grinding
The grinding process mainly based on overall rupture under the action of external forces such as extrusion and impact. 3. 3. 4. 10
Pressurized grindingThe process of crushing by using the working parts of the crushing equipment to pressurize the material. 3. 3. 4. 11
Shear grinding
The process of crushing the material under the action of shear force. 3. 3. 4. 12
Impact grinding
The grinding process is realized by using the high-speed moving working parts of the grinding equipment to impact the material or the high-speed moving material to collide with the wall.
Jet pulverizing
The high-speed jet formed by the expansion and acceleration of compressed gas through the nozzle: the particles are impacted, collided and rubbed with each other and with the wall, thus realizing the grinding process. 3.3.4.14
Ratio of size reduction The ratio of the characteristic particle size of the feed and the material in the grinding operation, indicating the degree of particle size reduction after the material is ground. 3,3.4,15
Grinding efficiency
The output rate of the unit energy consumption and product per unit time. 3.3.4.16
Grinding balance
During the grinding process, the particle size of the powder material no longer continues to decrease and the specific surface area no longer continues to increase. 3.3.4.17
Mechano-chemistry
Structural or physicochemical changes induced by mechanical forces during the material pulverization process. 3. 3. 4. 18
Grinding media
An object that is loaded into the mill and uses the impact, collision, shearing, and grinding effects generated during its movement to achieve material pulverization. 3. 3. 4. 19
Grinding aid
An external additive that improves the efficiency of pulverization. 3, 3. 4.20
Dispersant/dispersingagcntAn additive that is directional adsorbed on the surface of the treated particles to prevent them from aggregating with each other and keep the particles stable for a certain period of time. 6
Classification
The process of dividing the material into two or more particle size distribution levels. [GB/T 164182008, definition 2.1.1] 3.3.5.1
sieving
The process of classification using a sieve.
fluid classificationfluid elassificationThe process of classification in a liquid or gaseous medium3.3.5.3
dry classification
The process of classification in air or other gaseous medium. 3.3.5.4
wet classification
The process of classification in water or other liquid medium. 3.3.5.5
gravity classificationgravity classificationThe process of classification using the difference in the sedimentation of particles in a liquid or gaseous medium. 3. 3. 5. 6
centrifugal classification
Centrifugal classification
The process of classification by using the different trajectories of the particles in the centrifugal field. 3. 3. 5.7
sut size
Cut size
The separation boundary size of materials into coarse and fine particle products according to the particle size. 3.3.5.8
Classification efficiency GB/T 29526—2013
The degree of separation of coarse and fine particle products in the classification process is usually expressed by the ratio of the mass of the fine particle material after classification to the mass of the particle size smaller than the cut size in the classified material. It is an important indicator for measuring the quality of classification work. 3.3.6
surface treatment
Surface treatment
The general term for processes such as particle shaping, surface modification, and surface coating. 3.3.6.1
Particle design
Particle functional design
The process of changing the morphology, structure and characteristics of particles for the purpose of material functionalization. 3.3.6.2
Particle shape modification
Particle shaping
The process of processing particles to change their shape.
3. 3. 6. 2. 1
sphericity
Sphericity
The process of processing irregularly shaped particles into spherical or nearly spherical particles. 7
GB/T 29526--2013
3. 3. 6. 2. 2
degree of sphericity
The degree to which the shape of particles approaches that of a sphere.
[GB/T16418--2008, definition 2.2.2.16] 3. 3.6.3
Surface modification
The process of changing the surface properties of particles by means of adsorption, reaction, coating or coating of surface modifiers on the surface of particles. 3. 3. 6. 3. 1
Wet modification
The process of modifying the surface of materials in a slurry with a certain solid-liquid ratio or solid content. 3. 3. 6. 3. 2
Dry modification
The process of modifying the surface of powdered materials in a state or after drying. 3. 3. 6. 3. 3
Physical coating
The process of modifying the surface by physical methods. 3. 3. 6. 3. 4
Mechano-chemical modificationMechano-chemical modificationThe process of surface modification by means of strong mechanical forces during the pulverization process. 3. 3. 6. 3. 5
Encapsulation modificationEncapsulation modificationThe process of surface modification by covering the surface of the particles with a uniform and certain thickness of film. 3. 3. 6. 3. 6
High energy surface modificationHigh energy surface modificationThe process of surface modification by means of irradiation or radiation. 3, 3. 6. 3. 7
dSurface modifying agentSurface modifierSubstances used to modify the surface of particles. 3. 3. 6. 4
Surface coatingThe process of forming an inorganic coating on the surface of particles. 3. 3. 6. 4. 1
Chemical deposition coatingThe process of forming an inorganic coating on the surface of a particle by chemical reaction. 3. 3. 6. 4. 2
Mechanically impacted coatingThe process of forming an inorganic coating on the surface of a particle by mechanical impact. 3. 3. 6. 4. 3
Surface nano-structure
Surface nano-structure
The process of giving the particle surface nanostructure characteristics. 3. 3. 6. 4. 4
Core-shell struclure particleThe double-layer or multi-layer particle with a distinct internal core particle and an external shell structure. 8
3. 3. 6. 4. 5
fguest particle/shell particle
The outer layer of a core-shell particle, i.e., the small particle wrapped around the surface of a larger particle. 3.3.6.4.6
host particle/coreparticleThe inner particle of a core-shell particle.
3. 3. 6. 4. 7
micron-nano particle composite
micron-nano particle compositeThe process of nanometer-sized sub-particles coating the surface of micrometer-sized disk particles to form core-shell particles. 3.3.7
solid-solid separationThe process of separating solid particles with different physical and chemical properties. 3. 3. 7. 1
electrostatic sezaratios
The process of separation under the action of an electric field by utilizing the difference in the electrical properties of the particles. 3. 3. 7. 2
magaetic separation
and using the magnetic difference of particles: the process of separation under the action of a magnetic field. 3. 3.7. 3
oscillating table
GB/T 29526--2013
The process of separation by using the density difference of particles, the asymmetric reciprocating motion of the bed surface and the thin layer of inclined water flow. 3. 3. 7. 4
flotation
The process of separation based on the different physical and chemical properties of the particle surface. 3.3.8
Liquid-solid separation The process of separating solid particles from water or other liquids. 3. 3. 8. 1
Centrifugal dewatering The process of separating solid particles from water under the action of centrifugal force. 3. 3. 8.2
Centrifugal filtration The process of separating solid particles from liquids by using the difference between centrifugal pressure and atmospheric pressure as the driving force. 3.3.8.3
Vacuum filtration
The process of separating solid particles from liquids by using the pressure difference formed by vacuum on both sides of the filter medium. 3.3.8.4
Pressure filtration The process of separating solid particles from liquids by using the pressure difference formed by pressurization on both sides of the filter medium. 3.3.8.5
Membrane filtration
The process of separation using membrane materials with selective permeability.
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