CN114397315B - Method for influencing three-dimensional morphological characteristics of coal crushed products by grinding medium - Google Patents
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- 238000000227 grinding Methods 0.000 title claims abstract description 75
- 239000003245 coal Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000000877 morphologic effect Effects 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000002245 particle Substances 0.000 claims abstract description 36
- 238000005242 forging Methods 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000012216 screening Methods 0.000 claims abstract description 14
- 230000011218 segmentation Effects 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims abstract description 6
- 238000009659 non-destructive testing Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 abstract description 61
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 239000013589 supplement Substances 0.000 abstract description 4
- 230000006399 behavior Effects 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 20
- 239000011707 mineral Substances 0.000 description 20
- 238000010494 dissociation reaction Methods 0.000 description 8
- 230000005593 dissociations Effects 0.000 description 8
- 238000011160 research Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005188 flotation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
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- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/04—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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Abstract
The invention discloses a method for researching the influence of grinding media on the three-dimensional morphological characteristics of coal crushing products, and belongs to a method for researching coal crushing behaviors. And respectively selecting steel balls and steel forgings with the same total volume and diameter as media to carry out multi-time batch grinding on the narrow-size-fraction coal, and carrying out micron CT test of the same voxel after screening coarse-size-fraction products under various crushing conditions. And analyzing micrometer CT test data by utilizing three-dimensional reconstruction software, completing the segmentation and extraction of each particle in the crushed product by means of a watershed algorithm, calculating the volume, the surface area, the sphericity, the length-diameter ratio and the like of the particles, and further comparing and exploring the influence of the grinding medium type on the three-dimensional morphological characteristics of the crushed product. The method is an important supplement for comparing the coal crushing speed and the energy consumption difference under the action of different grinding media from the perspective of analyzing the three-dimensional morphological characteristics of the crushed products, and can more comprehensively and systematically reveal the influence of the grinding media on the coal crushing process.
Description
Technical Field
The invention relates to a method for influencing three-dimensional morphological characteristics of a coal crushing product by a grinding medium, which is based on comparison content (namely coal crushing rate and energy consumption) of traditional grinding medium crushing effect, and adds three-dimensional morphological analysis of the crushing product by means of modern instrument analysis means, so that the method has an important supporting effect on the influence of the grinding medium on the coal crushing process in a comprehensive system.
Background
The embedded granularity of the target mineral in natural mineral products is generally low, so that grinding and crushing are indispensable important links in the mineral sorting process. In general, the primary function of grinding is to promote mineral dissociation and to simultaneously act as a particle size reduction. The energy utilization efficiency of ball mills (fine grinding), stirring mills (ultra-fine grinding) and the like used in the grinding process is low, namely, most of energy is used for equipment operation, medium movement and heat loss, and only a small part of energy can act on particles to achieve the aim. In situ statistics show that about 70% of the energy consumption in a concentrating mill is derived from mineral grinding; in addition, the coal preparation plant is added with a middling grinding flotation process for improving the recovery rate of the clean coal, and most of grinding links are ball mills, so that the energy consumption is relatively high in the middling grinding flotation process.
To increase the degree of dissociation of the ground product and the yield of fine fraction, methods of optimizing the grinding medium sphere diameter ratio and changing the type of medium are generally employed. In the latter, more grinding media are used, steel balls and steel forgings, and the difference in geometry between the two results in different contact surfaces and acting forces with minerals during grinding, thereby producing different dissociation degrees, fine fraction yields and energy consumption after grinding of minerals. The use of steel forgings as grinding media has been shown to avoid excessive comminution while maintaining a high degree of mineral dissociation, reducing the pressure for subsequent flotation recovery. However, the difference of the crushing effect of different grinding media on minerals is not only limited to three aspects of dissociation degree, fine fraction yield and energy consumption, but also the difference of geometric structures among the grinding media can act on the contact and force application modes of the grinding media and mineral particles, so that the three-dimensional morphological characteristics of grinding products are affected, and finally, the mineralization efficiency of bubbles in a flotation stage and the strength of action force between mineralized bubbles and the products are changed.
Because the embedding granularity of the target mineral in the metal mineral product is relatively low, the granularity of the target mineral is reduced by adopting a grinding method, and the dissociation of the target mineral is promoted. At present, the ball mill is widely applied to dressing and smelting systems of various metal minerals, steel balls, steel forgings or steel bars and the like are mainly used as grinding media, and mineral dissociation effects are improved by optimizing ball diameter proportion and the like. Although the related literature compares and analyzes the differences of product fineness, dissociation degree and grinding energy consumption of steel balls and steel forgings after the ball mill processes metal minerals, the research on the three-dimensional morphology of particles is rarely reported.
Disclosure of Invention
Technical problems: the invention aims to overcome the defects in the prior art, provides a method for influencing the three-dimensional morphological characteristics of coal crushing products by grinding media, increases the representation and comparison of the three-dimensional morphological characteristics of the materials on the basis of comparing the difference of the material crushing rate and the energy consumption under the action of different grinding media in a conventional way, and provides data support for comprehensively researching the influence of the research media on the coal crushing process by a system.
The technical scheme is as follows: in order to achieve the aim, the method for influencing the three-dimensional morphological characteristics of the coal crushed products by the grinding medium comprises the steps of adopting a ball mill, a vibrating screen, a sleeve screen, steel balls with the same diameter and steel forgings; accurately measuring the volume of each steel ball and each steel forging by using a drainage method, and calculating the number of the required steel balls and steel forging on the premise that the total volume is the same; after crushing in batches for multiple times, taking out crushed coal products in the ball mill, putting the crushed coal products into a vibrating screen machine for screening, and screening each narrow-size-fraction coal product for micrometer CT test; respectively carrying out micron CT test of the same voxel on each narrow-size-fraction coal product, utilizing a watershed algorithm in three-dimensional reconstruction software to segment and extract each particle in a particle group, further analyzing three-dimensional morphological characteristic parameters such as volume, surface area, sphericity, length-diameter ratio and the like of each particle, and exploring the influence of grinding medium types on the three-dimensional morphological characteristic parameters of the crushed products; the method comprises the following specific steps:
Step one: before a crushing experiment, accurately measuring the volumes of steel balls and steel forgings with the same diameter by using a drainage method, calculating the total volume of grinding media required by a ball mill when the filling rate of the ball mill is 35%, and calculating the number of the required steel balls and steel forgings;
Step two: placing steel balls and steel forgings with the same total volume and raw materials of narrow-size-fraction coal into a ball mill, and crushing for multiple time batches;
Step three: screening narrow-size-fraction coal products in each batch of crushed products after crushing experiments are completed, and carrying out nondestructive testing on the same voxels on different narrow-size-fraction coal products in each batch by adopting micron CT;
Step four: analyzing each CT data by using a watershed algorithm in three-dimensional reconstruction software, completing the segmentation and extraction of each particle in each batch of particle-grade coal particle groups, and calculating three-dimensional morphological characteristic parameters;
step five: comparing the three-dimensional morphological characteristic parameters of the narrow-size-fraction coal in the crushed products of different grinding media under the condition of crushing time of each batch, and analyzing the change condition of the particle content of the different three-dimensional morphological characteristic parameters along with the crushing time and the grinding media by combining the yield of the narrow-size-fraction coal to reveal the influence of the grinding media on the coal crushing process.
The method is characterized in that crushed products of each batch after screening and grinding are obtained through a vibrating screen and a cover screen, and the screen ratio of the cover screen is root number 2.
The ratio of the maximum value to the minimum value of the granularity of the raw material of the narrow-size-fraction coal is root number 2.
In the multi-time batch crushing, each crushing time is gradually accumulated at intervals of 1min, and the longest crushing time is 10min.
The lower limit of the granularity of the micron CT nondestructive testing of the narrow-size-fraction coal products in each batch of crushed products after screening and grinding is 0.125mm.
The test of the different narrow-size-fraction coal products is that each narrow-size-fraction coal is placed in a plastic pipe with the inner diameter of 15mm, and CT test with the voxel of 15 microns is carried out under the same test conditions.
The beneficial effects are that: the method for combining nondestructive testing and three-dimensional data analysis provided by the invention is used for dividing and extracting each particle in the grinding product, calculating the information such as the volume, the surface area, the sphericity, the length-diameter ratio and the like of the particles, and comparing and analyzing the influence of the grinding medium on the three-dimensional morphological characteristics of the product. The related content is derived from a complex grinding system of metal mineral products, a method of combining micron CT nondestructive testing and three-dimensional reconstruction software data analysis is adopted, the three-dimensional morphology feature difference of particles under the action of different grinding time and mediums is researched, the defect of the existing research in the aspect is made up, and a technical support is provided for comprehensively and systematically revealing the influence of research mediums on the mineral grinding process. The nondestructive testing of coarse fraction in the crushed product and the calculation of three-dimensional morphological characteristic parameters are completed by using micron CT and three-dimensional reconstruction software, and then the particle size composition of the crushed product under different grinding time and medium conditions is combined, and the evolution rule of the three-dimensional morphological characteristic parameters of the crushed product with narrow fraction along with the change of the crushing conditions is compared and analyzed. The method is incorporated into a modern analysis detection technology, can realize accurate segmentation and extraction of particle swarm and analysis and calculation of three-dimensional morphological feature parameters, is an important supplement to the existing research on the influence of grinding media on the coal crushing process, is also an important supplement to the comparison of the coal crushing rate and energy consumption difference under the action of different grinding media, and can more comprehensively and systematically reveal the influence of the grinding media on the coal crushing process. The method is based on three-dimensional morphological feature differences of crushed products caused by differences of force application and action modes of two different grinding media (steel balls and steel forgings) and coal in the ball milling crushing process, utilizes micron CT and three-dimensional reconstruction software to carry out nondestructive testing, three-dimensional reconstruction and particle segmentation extraction of coarse-grain products under different crushing conditions, and counts three-dimensional morphological feature parameters such as volume, specific surface area, sphericity, length-diameter ratio and the like. Based on the comparison content of the crushing effect of the traditional grinding medium (namely the crushing rate and the energy consumption of coal), the research method adds the three-dimensional morphology analysis of the crushing product by means of modern instrument analysis means, and has an important supporting effect on the comprehensive and systematic disclosure of the influence of the grinding medium on the coal crushing process. The method is an important supplement for comparing the coal crushing speed and the energy consumption difference under the action of different grinding media from the perspective of analyzing the three-dimensional morphological characteristics of the crushed products, and can more comprehensively and systematically reveal the influence of the grinding media on the coal crushing process. The related method is also suitable for researching the three-dimensional morphological characteristics of the metal mineral grinding product by using a research medium.
Drawings
FIG. 1 is a flow chart of a method of the invention for grinding media effect on the three-dimensional topographical features of coal breakage products.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
The method for influencing the three-dimensional morphological characteristics of the coal crushed products by the grinding medium comprises the steps of adopting a ball mill, a vibrating screen, a sleeve screen, steel balls with the same diameter and steel forgings; accurately measuring the volume of each steel ball and each steel forging by using a drainage method, and calculating the number of the required steel balls and steel forging on the premise that the total volume is the same; after crushing in batches for multiple times, taking out crushed coal products in the ball mill, putting the crushed coal products into a vibrating screen machine for screening, and screening each narrow-size-fraction coal product for micrometer CT test; respectively carrying out micron CT test of the same voxel on each narrow-size-fraction coal product, utilizing a watershed algorithm in three-dimensional reconstruction software to segment and extract each particle in a particle group, further analyzing three-dimensional morphological characteristic parameters such as volume, surface area, sphericity, length-diameter ratio and the like of each particle, and exploring the influence of grinding medium types on the three-dimensional morphological characteristic parameters of the crushed products; the method comprises the following specific steps:
Step one: before a crushing experiment, accurately measuring the volumes of steel balls and steel forgings with the same diameter by using a drainage method, calculating the total volume of grinding media required by a ball mill when the filling rate of the ball mill is 35%, and calculating the number of the required steel balls and steel forgings;
Step two: placing steel balls and steel forgings with the same total volume and raw materials of narrow-size-fraction coal into a ball mill, and crushing for multiple time batches; in the multi-time batch crushing, each crushing time is gradually accumulated at intervals of 1min, and the longest crushing time is 10min.
Step three: screening out narrow-size-fraction coal products in various batches of crushed products after crushing experiments are completed, wherein the lower limit of the granularity of the narrow-size-fraction coal products for carrying out micron CT nondestructive testing in various batches of crushed products is 0.125mm, and carrying out nondestructive testing on the same voxels on different narrow-size-fraction coal products in various batches by adopting micron CT, wherein the testing of the different narrow-size-fraction coal products is to place various narrow-size-fraction coals in a plastic pipe with the inner diameter of 15mm, and carry out CT testing with the voxels of 15 microns under the same testing conditions; the crushed products of each batch after the grinding are sieved and obtained through a vibrating screen and a cover screen, and the screen ratio of the cover screen is root number 2; the ratio of the maximum value to the minimum value of the granularity of the raw material of the narrow-size-fraction coal is root number 2.
Step four: analyzing each CT data by using a watershed algorithm in three-dimensional reconstruction software, completing the segmentation and extraction of each particle in each batch of particle-grade coal particle groups, and calculating three-dimensional morphological characteristic parameters;
step five: comparing the three-dimensional morphological characteristic parameters of the narrow-size-fraction coal in the crushed products of different grinding media under the condition of crushing time of each batch, and analyzing the change condition of the particle content of the different three-dimensional morphological characteristic parameters along with the crushing time and the grinding media by combining the yield of the narrow-size-fraction coal to reveal the influence of the grinding media on the coal crushing process.
Embodiment 1,
As shown in fig. 1, the method for researching crushing behavior of each component in coal mixing roll grinding crushing comprises three steps:
Step one: selecting steel balls and steel forgings with the same total volume and diameter as grinding media, and carrying out multi-time batch narrow-size-fraction coal ball milling experiments; screening the ground product by taking root number 2 as a screen sequence to obtain the granularity composition of the ground product; collecting materials with the particle size of +0.125mm, and placing the materials in a plastic pipe with the inner diameter of 15 mm;
Step two: carrying out 15-micrometer voxel nondestructive testing on narrow-size-fraction coal products larger than 0.125mm under each crushing condition by utilizing micrometer CT; analyzing the data of each body through three-dimensional reconstruction software, and counting the three-dimensional morphological characteristic parameters of the volume, the surface area, the sphericity and the length-diameter ratio of each particle in the narrow-size-fraction product after the particles are extracted by segmentation through a watershed algorithm;
Step three: and (3) comparing and analyzing the evolution rule of the three-dimensional morphological characteristic parameters of the crushed products with the narrow particle size fractions along with the change of the crushing conditions by utilizing the granularity composition of the products under the crushing conditions obtained in the step (I) and the three-dimensional morphological characteristic parameters of the particle groups under the conditions obtained in the step (II), and providing data support for comprehensively revealing the influence of the grinding medium on the coal crushing process.
Claims (2)
1. A method for influencing three-dimensional morphological characteristics of a coal crushed product by a grinding medium comprises the steps of adopting a ball mill, a vibrating screen, a sleeve screen, steel balls with the same diameter and steel forgings; the method is characterized in that: accurately measuring the volume of each steel ball and each steel forging by using a drainage method, and calculating the number of the required steel balls and steel forging on the premise that the total volume is the same; after crushing in batches for multiple times, taking out crushed coal products in the ball mill, putting the crushed coal products into a vibrating screen machine for screening, and screening each narrow-size-fraction coal product for micrometer CT test; respectively carrying out micron CT test of the same voxel on each narrow-size-fraction coal product, utilizing a watershed algorithm in three-dimensional reconstruction software to segment and extract each particle in a particle group, further analyzing three-dimensional morphological characteristic parameters such as volume, surface area, sphericity, length-diameter ratio and the like of each particle, and exploring the influence of grinding medium types on the three-dimensional morphological characteristic parameters of the crushed products; the method comprises the following specific steps:
step one: before a crushing experiment, accurately measuring the volumes of steel balls and steel forgings with the same diameter by using a drainage method, calculating the total volume of grinding media required by a ball mill when the filling rate of the ball mill is 35%, and calculating the number of the required steel balls and steel forgings;
Step two: placing steel balls and steel forgings with the same total volume and raw materials of narrow-size-fraction coal into a ball mill, and crushing for multiple time batches;
Step three: screening narrow-size-fraction coal products in each batch of crushed products after crushing experiments are completed, and carrying out nondestructive testing on the same voxels on different narrow-size-fraction coal products in each batch by adopting micron CT;
Step four: analyzing each CT data by using a watershed algorithm in three-dimensional reconstruction software, completing the segmentation and extraction of each particle in each batch of particle-grade coal particle groups, and calculating three-dimensional morphological characteristic parameters;
step five: comparing three-dimensional morphological characteristic parameters of narrow-size-fraction coals in crushed products of different grinding media under the condition of crushing time of each batch, analyzing the variation condition of the particle content of the different three-dimensional morphological characteristic parameters along with the crushing time and the grinding media by combining the yield of each narrow-size-fraction coal, and revealing the influence of the grinding media on the coal crushing process;
The lower limit of the granularity of the micron CT nondestructive testing of the narrow-size-fraction coal products in each batch of crushed products after the screening is 0.125mm;
the test of the coal products with different narrow particle sizes is to put each narrow particle size coal into a plastic pipe with the inner diameter of 15mm, and CT test with the voxel of 15 microns is carried out under the same test condition;
The crushed products of each batch after the grinding are sieved and obtained through a vibrating screen and a cover screen, and the screen ratio of the cover screen is root number 2;
the ratio of the maximum value to the minimum value of the granularity of the raw material of the narrow-size-fraction coal is root number 2.
2. The method for influencing the three-dimensional morphological characteristics of the crushed coal products by the grinding medium according to claim 1, which is characterized in that: in the multi-time batch crushing, each crushing time is gradually accumulated at intervals of 1min, and the longest crushing time is 10min.
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730607A (en) * | 2005-09-01 | 2006-02-08 | 太原理工大学 | Cerium, gadolinium activated yttrium aluminium garnet fluorescent powder and preparation method |
| CN101116952A (en) * | 2006-08-01 | 2008-02-06 | 上海华虹Nec电子有限公司 | Chemical mechanism grinding duration control method |
| CN102980902A (en) * | 2012-12-03 | 2013-03-20 | 山西大学 | Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample |
| WO2015173376A1 (en) * | 2014-05-15 | 2015-11-19 | Imerys Minerals Limited | Grinding method and grinding medium |
| CN106442187A (en) * | 2016-04-28 | 2017-02-22 | 内蒙古工业大学 | Impacting ball-pressure testing and evaluation method of engineering material |
| CL2017001741A1 (en) * | 2017-06-23 | 2018-01-05 | Anglo American Services Uk Ltd | Maximization of the value of a source of iron sulphide through a sequential rejection of waste. |
| EP3318862A1 (en) * | 2016-11-04 | 2018-05-09 | FEI Company | Tomography sample preparation systems and methods with improved speed, automation, and reliability |
| CN108896590A (en) * | 2018-06-26 | 2018-11-27 | 中国矿业大学 | Study the method and system of the broken middle each component crushing behavior of coal mixing |
| CN110405218A (en) * | 2018-04-26 | 2019-11-05 | 广东正德材料表面科技有限公司 | A kind of high sphericity nanostructure powder of stainless steel and preparation method thereof |
| CN110441146A (en) * | 2019-08-30 | 2019-11-12 | 中国矿业大学 | A kind of CT scan is crushed the side pressure restraint-type compaction apparatus and method of rock sample hole in situ |
| CN111582164A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation method based on fracture characteristic criterion |
| CN111582162A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation degree obtaining method based on particle fracture characteristics |
| CN111582161A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation system based on fracture characteristic criterion |
| CN112483090A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and controlling rock burst under three-dimensional coal pillar |
| CN112560254A (en) * | 2020-12-09 | 2021-03-26 | 西安电子科技大学 | Short fiber reinforced composite material mechanical property prediction method based on CT scanning |
| WO2021062312A1 (en) * | 2019-09-27 | 2021-04-01 | Nature Coatings, Inc. | Plant char carbon pigments and liquid dispersions thereof |
| CN113866197A (en) * | 2021-12-06 | 2021-12-31 | 中国科学院地质与地球物理研究所 | Method for determining main quantity elements of sample with non-uniform mineral composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6882956B2 (en) * | 2002-10-30 | 2005-04-19 | International Business Machines Corporation | Lapping plate topography system |
| US20070098803A1 (en) * | 2005-10-27 | 2007-05-03 | Primet Precision Materials, Inc. | Small particle compositions and associated methods |
-
2022
- 2022-01-11 CN CN202210025440.7A patent/CN114397315B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730607A (en) * | 2005-09-01 | 2006-02-08 | 太原理工大学 | Cerium, gadolinium activated yttrium aluminium garnet fluorescent powder and preparation method |
| CN101116952A (en) * | 2006-08-01 | 2008-02-06 | 上海华虹Nec电子有限公司 | Chemical mechanism grinding duration control method |
| CN102980902A (en) * | 2012-12-03 | 2013-03-20 | 山西大学 | Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample |
| WO2015173376A1 (en) * | 2014-05-15 | 2015-11-19 | Imerys Minerals Limited | Grinding method and grinding medium |
| CN106442187A (en) * | 2016-04-28 | 2017-02-22 | 内蒙古工业大学 | Impacting ball-pressure testing and evaluation method of engineering material |
| EP3318862A1 (en) * | 2016-11-04 | 2018-05-09 | FEI Company | Tomography sample preparation systems and methods with improved speed, automation, and reliability |
| CL2017001741A1 (en) * | 2017-06-23 | 2018-01-05 | Anglo American Services Uk Ltd | Maximization of the value of a source of iron sulphide through a sequential rejection of waste. |
| CN110405218A (en) * | 2018-04-26 | 2019-11-05 | 广东正德材料表面科技有限公司 | A kind of high sphericity nanostructure powder of stainless steel and preparation method thereof |
| CN108896590A (en) * | 2018-06-26 | 2018-11-27 | 中国矿业大学 | Study the method and system of the broken middle each component crushing behavior of coal mixing |
| CN110441146A (en) * | 2019-08-30 | 2019-11-12 | 中国矿业大学 | A kind of CT scan is crushed the side pressure restraint-type compaction apparatus and method of rock sample hole in situ |
| WO2021062312A1 (en) * | 2019-09-27 | 2021-04-01 | Nature Coatings, Inc. | Plant char carbon pigments and liquid dispersions thereof |
| CN111582164A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation method based on fracture characteristic criterion |
| CN111582162A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation degree obtaining method based on particle fracture characteristics |
| CN111582161A (en) * | 2020-05-07 | 2020-08-25 | 中国矿业大学 | Mineral dissociation system based on fracture characteristic criterion |
| CN112560254A (en) * | 2020-12-09 | 2021-03-26 | 西安电子科技大学 | Short fiber reinforced composite material mechanical property prediction method based on CT scanning |
| CN112483090A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and controlling rock burst under three-dimensional coal pillar |
| CN113866197A (en) * | 2021-12-06 | 2021-12-31 | 中国科学院地质与地球物理研究所 | Method for determining main quantity elements of sample with non-uniform mineral composition |
Non-Patent Citations (4)
| Title |
|---|
| Effect of particle properties on the energy-size reduction of coal in the ball-and-race mill;Weining Xie et，;《Powder Technology》;20181231;第333卷;第404-409页 * |
| 杨甘生 等.《页岩气勘探装备》.上海：华东理工大学出版社,2017,(第第一版版),第15-20页. * |
| 球磨机细磨阶段钢段与钢球磨矿效果对比;王旭东 等，;《黄金科学技术》;20201031;第28卷(第5期);第771-779页 * |
| 磨矿方式对方解石颗粒形貌及浮选行为的影响;宁江峰 等;《矿产保护与利用》(第2期);第51-55页 * |
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