CN101995368A - Method for measuring roundness degree of particles - Google Patents
Method for measuring roundness degree of particles Download PDFInfo
- Publication number
- CN101995368A CN101995368A CN 201010524546 CN201010524546A CN101995368A CN 101995368 A CN101995368 A CN 101995368A CN 201010524546 CN201010524546 CN 201010524546 CN 201010524546 A CN201010524546 A CN 201010524546A CN 101995368 A CN101995368 A CN 101995368A
- Authority
- CN
- China
- Prior art keywords
- particle
- particles
- mellow
- track
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a method for measuring the roundness degree of particles, comprising: arranging a track which is provided with an inclined section and a level section in the length direction; successively putting one sample particle of the standard particles and a plurality of particles taken at random to be tested at a position with the same height of the inclined section of the track to freely flow, roll and fall along the track; measuring the horizontal moving distance of the particles to be tested after the particles to be tested stop moving; and calculating the ratio of the weighted average of the horizontal moving distance of the particles to be tested to the horizontal moving distance of the standard sample particle to obtain the roundness degree of the particles. The invention can ensure that the roundness degree of the particles can be accurately measured, and the measurement method is simple, convenient in operation, and favorable in consistency of measuring results. The method in the invention can guide the appearance quality index measurement of all particle products.
Description
Technical field
The present invention relates to the mellow and full degree measuring method of a kind of method of measuring the mellow and full degree of particle, particularly chemical fertilizer granule.
Background technology
In Production in Chemical Plant, in analytic product, in nutrient, need measure product appearance.Presentation quality comprises: grain size, uniform particles degree, the mellow and full degree of particle etc.National standard only has requirement to the grain size of chemical fertilizer product, with phosphate fertilizer is example, particle sizing to monoammonium phosphate, Diammonium phosphate (DAP) among the GB GB10205-2009 has carried out requirement, respectively the granulometric range of high-class product, Grade A, certified products product is stipulated with traditional method and two kinds of production technologies of slurry process, and clear and definite assay method (assay method of grain graininess is undertaken by GB GB/T10209.4).As, the granularity requirements of traditional method Diammonium phosphate (DAP) high-class product is: (1.00mm～4.00mm) 〉=90%.
The uniform particles degree is meant particle normal distribution situation within the specific limits, and the mellow and full degree of particle is meant the smooth situation of particle appearance.These two indexs clear and definite regulation in GB, but extensively cognitive by the user as the presentation quality of product has directly reflected the appearance of product.But do not have measurement data to compare, only observe and judge good and badly, because of light, aberration, store up various factors such as situation, add each one vision deviation, easily cause the error in the judgement with naked eyes.The invention solves the problems referred to above, particle is measured the judgement deviation of avoiding human factor that product appearance is caused by the survey instrument of invention.
Summary of the invention
The purpose of this invention is to provide a kind of method of measuring the mellow and full degree of particle, the mellow and full degree of particle is made quantitative test, to overcome the judgement deviation that human factor causes the product particle apparent mass.
The present invention is achieved in that a track that is followed successively by tilting section and horizontal segment in the longitudinal direction is set; Its measuring process comprises:
(1) the sustained height place that one in standard particle sample and the some grains of particulate samples to be measured randomly drawed is placed on successively the tilting section track flows freely along track and rolls, and treats that measuring it after the particle stop motion moves horizontally distance;
(2) ask particulate samples to be measured to move horizontally the weighted mean value of distance and the ratio of standard particle sample levels displacement, promptly obtain the mellow and full degree value of particle.
Because the mellow and full degree of particle shows as the length of rolling distance to a great extent, common mellow and full degree well, rolling distance is long; Otherwise rolling distance is short.Therefore, adopt data that said method the records external appearance characteristic of the mellow and full degree of characterizing particles preferably.
The angle of repose that the angle of inclination of above-mentioned tilting section track equals particle to be measured when stacking naturally.Can simulate particle like this and under state of nature, roll, thus the initial velocity that acquisition is rolled at the horizontal segment track.
The standard particle sample obtains as follows: in a collection of particle to be measured, choose the some grains of the mellow and full particle of smooth in appearance, by moving horizontally apart from the longest particle that above-mentioned steps (1) measures.Usually, the product appearance form of different process or same technology different batches is difference to some extent, can avoid with the standard particle sample that this method is selected? situation can reflect the actual conditions with batch products objectively.
As shown from the above technical solution, the invention provides a kind of objective means of measuring the mellow and full degree of particle, more accurately the mellow and full degree of characterizing particles, and measuring method is simple, easy to operate, the measurement result high conformity has directiveness to the quality index appearance measurement of all grain products.
Description of drawings
Fig. 1 is a measurement mechanism structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the resistance when track 1 adopts smooth surface to roll to reduce particle, track 1 is followed successively by tilting section and horizontal segment in the longitudinal direction, and horizontal segment track 12 surfaces are provided with the size scale 13 of measuring horizontal range; Tilting section track 11 belows have support 2 to support, the angle of repose that the angle of inclination of tilting section track 11 equals particle to be measured when stacking naturally, and the particle of surveying is a Diammonium phosphate (DAP) in this example, its angle of repose is between 30 °～40 °; Tilting section track 11 tops are provided with striker plate 5, striker plate 5 lower ends to the height of horizontal segment raceway surface at 300mm～500mm, its rotating mechanism is made up of bearing pin 7 and operating rod 4, striker plate 5 tops and bearing pin 7 are connected, bearing pin 7 two ends are hinged on support 6, and operating rod 4 is connected in bearing pin 7 one ends.During measurement, particle 3 to be measured is placed on striker plate 5 tops, swivel lever 4 makes striker plate 5 be rotated counterclockwise around bearing pin 7, and particle 3 promptly falls until stopping along track.Track 1 can have the width of broad, can measure several particles simultaneously at every turn, to improve efficiency of measurement.
Its measuring process is as follows:
(1) in a collection of particle, chooses the some grains of the mellow and full particle to be measured of smooth in appearance as standard particle sample to be selected;
(2) the sustained height places that the some grains of standard particle sample to be selected and the particulate samples of randomly drawing to be measured are placed on the tilting section track successively are striker plate 5 tops, open striker plate 5 and make particle flow freely to roll, treat that measuring it after the particle stop motion moves horizontally distance along track;
(3) ask particulate samples to be measured to move horizontally and move horizontally the peaked ratio of distance in the weighted mean value of distance and the standard particle sample to be selected, promptly obtain the mellow and full degree value of particle.
Claims (4)
1. measure the method for the mellow and full degree of particle, it is characterized in that being provided with a track that is followed successively by tilting section and horizontal segment in the longitudinal direction; Its measuring process comprises:
(1) the sustained height place that one in standard particle sample and the some grains of particulate samples to be measured randomly drawed is placed on successively the tilting section track flows freely along track and rolls, and treats that measuring it after the particle stop motion moves horizontally distance;
(2) ask particulate samples to be measured to move horizontally the weighted mean value of distance and the ratio of standard particle sample levels displacement, promptly obtain the mellow and full degree value of particle.
2. the method for the mellow and full degree of measurement particle according to claim 1, it is characterized in that the standard particle sample obtains as follows: in a collection of particle to be measured, choose the some grains of the mellow and full particle of smooth in appearance, by moving horizontally that above-mentioned steps (1) measures apart from the longest particle.
3. the method for the mellow and full degree of measurement particle according to claim 1, the angle of repose that the angle of inclination that it is characterized in that the tilting section track equals particle to be measured when stacking naturally.
4. according to the method for claim 1 or the mellow and full degree of 2 or 3 described measurement particles, it is characterized in that the placement of sample on the tilting section track highly is 300mm～500mm in the step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010524546 CN101995368A (en) | 2010-10-29 | 2010-10-29 | Method for measuring roundness degree of particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010524546 CN101995368A (en) | 2010-10-29 | 2010-10-29 | Method for measuring roundness degree of particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101995368A true CN101995368A (en) | 2011-03-30 |
Family
ID=43785821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010524546 Pending CN101995368A (en) | 2010-10-29 | 2010-10-29 | Method for measuring roundness degree of particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101995368A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279145A (en) * | 2011-06-30 | 2011-12-14 | 云南三环中化化肥有限公司 | Device for determining relative roundness of granular material and determination method thereof |
| CN105136630A (en) * | 2015-09-11 | 2015-12-09 | 昆明倍捷科技有限公司 | Particle roundness tester |
| CN111359723A (en) * | 2020-05-09 | 2020-07-03 | 福建工程学院 | Sandstone aggregate shaping equipment capable of detecting roundness and working method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1026643A (en) * | 1963-04-03 | 1966-04-20 | Atomic Energy Authority Uk | Improvements in or relating to apparatus for use in the production of spherical particles |
| US4059189A (en) * | 1975-04-03 | 1977-11-22 | Vacu-Blast Limited | Classification of particles |
| CN201199218Y (en) * | 2008-04-08 | 2009-02-25 | 南昌弘益科技有限公司 | Measurer for powder particle repose angle |
-
2010
- 2010-10-29 CN CN 201010524546 patent/CN101995368A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1026643A (en) * | 1963-04-03 | 1966-04-20 | Atomic Energy Authority Uk | Improvements in or relating to apparatus for use in the production of spherical particles |
| US4059189A (en) * | 1975-04-03 | 1977-11-22 | Vacu-Blast Limited | Classification of particles |
| CN201199218Y (en) * | 2008-04-08 | 2009-02-25 | 南昌弘益科技有限公司 | Measurer for powder particle repose angle |
Non-Patent Citations (2)
| Title |
|---|
| 《Georgia Tech Theses and Dissertations》 20040106 Jake Dodds PARTICLE SHAPE AND STIFFNESS , 2 * |
| 《山东理工大学学报(自然科学版)》 20030731 李永军等 颗粒和粉体混合物沿斜滑道的滑动摩擦系数 第17卷, 第4期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279145A (en) * | 2011-06-30 | 2011-12-14 | 云南三环中化化肥有限公司 | Device for determining relative roundness of granular material and determination method thereof |
| CN102279145B (en) * | 2011-06-30 | 2013-04-17 | 云南三环中化化肥有限公司 | Device for determining relative roundness of granular material and determination method thereof |
| CN105136630A (en) * | 2015-09-11 | 2015-12-09 | 昆明倍捷科技有限公司 | Particle roundness tester |
| CN105136630B (en) * | 2015-09-11 | 2017-09-19 | 昆明倍捷科技有限公司 | Granule roundness analyzer |
| CN111359723A (en) * | 2020-05-09 | 2020-07-03 | 福建工程学院 | Sandstone aggregate shaping equipment capable of detecting roundness and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wu et al. | Physical properties of solid biomass | |
| CN101126693B (en) | Method for calibrating drying box for determining tobacco moisture and method for determining tobacco moisture | |
| Yinyan et al. | Numerical simulation of spreading performance and distribution pattern of centrifugal variable-rate fertilizer applicator based on DEM software | |
| CN101995368A (en) | Method for measuring roundness degree of particles | |
| CN109085116A (en) | Friction coefficient tester and measuring method | |
| Villette et al. | Hybrid centrifugal spreading model to study the fertiliser spatial distribution and its assessment using the transverse coefficient of variation | |
| US20110208436A1 (en) | Method of performing a series of experiments, an integrated continuous pharmaceutical product processing system, and a computer program product | |
| CN107340207A (en) | The measuring method of gray haze KPT Scatter effect based on Polarization Detection | |
| Gao et al. | A protocol for the classification of wet mass in extrusion–spheronization | |
| CN104155426A (en) | Quantitative soil splash erosion power monitoring system and method | |
| CN201844963U (en) | Apparatus for measuring roundness of granules | |
| Zhou et al. | Study on key issues in the modelling of maize seeds based on the multi-sphere method | |
| CN102279145B (en) | Device for determining relative roundness of granular material and determination method thereof | |
| Grift et al. | Dynamic friction coefficient measurement of granular fertilizer particles | |
| CN104865145B (en) | A kind of method for determining catalyst antiwear property | |
| CN103439759B (en) | Speed governing rotary type precipitation particle standard device | |
| CN106872302A (en) | Feed composite particles carrier Determination of Hardness device and hardness balance's assay method | |
| Muhamad et al. | Effects of kernel hardness and moisture content on wheat breakage in the single kernel characterisation system | |
| CN104297111A (en) | Method for characterizing particle size of special-shaped particles | |
| García-Ramos et al. | Application of a 3-D laser scanner for characterising centrifugal fertiliser spreaders | |
| CN202177562U (en) | Device for measuring relative roundness of particle materials | |
| CN103591898A (en) | Method for testing average value of soluble inflation diameter of SBS modifying agents in modified pitch | |
| Cool et al. | Comparing different methods of using collecting trays to determine the spatial distribution of fertiliser particles | |
| CN206583739U (en) | A kind of feed composite particles carrier Determination of Hardness device | |
| CN206930552U (en) | Water-coal-slurry flowmeter based on Digital image technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110330 |