CN205953917U - Prepare wear -resisting attrition medium of superfine coal slurry - Google Patents
Prepare wear -resisting attrition medium of superfine coal slurry Download PDFInfo
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- CN205953917U CN205953917U CN201620790112.6U CN201620790112U CN205953917U CN 205953917 U CN205953917 U CN 205953917U CN 201620790112 U CN201620790112 U CN 201620790112U CN 205953917 U CN205953917 U CN 205953917U
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- resistant particles
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Abstract
The utility model provides a prepare wear -resisting attrition medium of superfine coal slurry, the appearance of attrition medium is globular, including wearing layer, wear resistant particles, intermediate level and sandwich layer, the intermediate level parcel is on the sandwich layer surface, and the wearing layer parcel is on the intermediate level surface, and wearing layer, intermediate level and sandwich layer are the silicic acid aluminium lamination, contain wear resistant particles in the wearing layer, and wear resistant particles increases tough ceramic particles for the low -temperature sintering microcrystalline alumina. This attrition medium can increase the area of contact in the material contact process, is favorable to ultra tinyization of material more, improves the grinding efficiency greatly to reduce particle surface's hard damage, can adjust the fraction of granule and join in marriage, improve the performance of material, reduce off -the -shelf pollution, reduce the machine of grinding and at the noise of operation in -process, fall low power consumption, be particularly useful for the wear -resisting attrition medium as superfine coal slurry.
Description
Technical field
The utility model belongs to grinding-material technical field, is related to a kind of abrasive media, more particularly, to one kind prepare ultra-fine
The wear-resisting abrasive media of water-coal-slurry.
Background technology
Coal industry is a kind of large-scale power consumption industry, and the grinding pow consumption of wherein coal accounts for very big part, therefore, reduces
Coal grinding pow consumption is the important content of environmental protection and clean manufacturing.
The factor of correct understanding impact Ball-stirring mill operation is simultaneously optimized, and to playing equipment advantage further, improves to stir
Mix the processing technology for main body for the mill, improve grinding efficiency, improve operating efficiency and all there is important function.
CN 104649654A discloses a kind of preparation method of cement grinding mill special low-density abrasive body, and methods described includes
Following steps：(1) mass fraction is respectively the bauxite of 10%-90%；The alumina powder of 10%-90%；0.0%-5%'s
Chromium oxide；0.0%-5% sintering aid and modifying agent are made into raw material；(2) raw material that step (1) is prepared, using Ball-stirring mill or
Tube mill ball milling 2-24 hour；Alumina gel and Ludox, Alumina gel and Ludox is added when grinding 1-10 hour
For the 0%-15% of alumina powder quality, grinding 10-20 is little constantly to add one or more slaine, and total dosage of slaine is
The little precipitating reagent constantly adding corresponding slaine of the 0%-15% of alumina powder quality, grinding 16-24, the addition of metal-precipitator
Measure the 0%-10% for alumina powder quality；(3) step (2) gained material mist projection granulating is become raw material powder, then adopt etc. quiet
Molded or mechanical pressing, prepared base substrate, are then dried 3-36 hour at 60-200 DEG C；(4) step (3) gained base substrate is existed
700-1600 DEG C of multi-steps sintering, temperature retention time 1-60 hour, finished product.Wherein, in step (1), sintering aid with modifying agent is
Sodium carbonate, magnesium carbonate, calcium carbonate, potassium carbonate, titanium oxide, silica, zirconium oxide, iron oxide, manganese oxide, lanthana, yittrium oxide
Deng one or more.
At present, conventional abrasive media is usually the particle of all size being made up of rigid material, adopts its shape more
Spherical, cylindricality etc., but, the contact area of existing abrasive media and material is little so as to grinding efficiency is low.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide and a kind of prepares the resistance to of ultra-thin slurries
Barreling grinding media, described abrasive media can increase the contact area in material contact process, advantageously in the ultra micro of material
Refinement, greatly improves grinding efficiency, and reduces the hard damage of particle surface；And the grain size distribution of particle can be adjusted, change
The performance of kind material, reduces the pollution to finished product, reduces noise in running for the grinder, reduces power consumption；Can extensively use
In ultra-fine grinding mill Particle size requirements be 5-10 μm or atomizer mill Particle size requirements are 15-20 μm of grinding, is particularly suited for as preparation
The wear-resisting abrasive media of ultra-thin slurries.
For reaching this purpose, the utility model employs the following technical solutions：
One of the purpose of this utility model is to provide a kind of wear-resisting abrasive media preparing ultra-thin slurries, described grinding
The pattern of medium is spherical, and described abrasive media includes wearing layer, abrasion resistant particles, intermediate layer and sandwich layer, described intermediate layer parcel
In core layer surface, described wearing layer is wrapped in interlayer surfaces, and described wearing layer, intermediate layer and sandwich layer are aluminum silicate layer, institute
State in wearing layer and comprise abrasion resistant particles, described abrasion resistant particles are low-temperature sintering microcrystalline alumina toughening ceramic particle.
Described aluminum silicate layer is preferably 1000-1400 DEG C by aluminum oxide and silica in temperature, and sintering time is 2-3h
Formed afterwards.The formula of aluminum oxide and silica, three layers of ratio in the wearing layer of described abrasive media, intermediate layer and sandwich layer
The sphere diameter of weight and abrasive media can carry out suitable adjustment according to the property of grinding material, granularity and concentration.
Described wearing layer is preferably by the SiO 2 powder of the alumina powder of 45-55 weight portion and 50-60 weight portion
The sintering nitride layer that mixture sintering is formed.The parts by weight of described alumina powder can be 46 weight portions, 48 weight portions, 50 weight
Part, 52 weight portions, 53 weight portions or 54 weight portions etc.；The parts by weight of described SiO 2 powder can be 52 weight portions, 55 weights
Amount part, 56 weight portions, 57 weight portions or 59 weight portions etc..
The composition of described low-temperature sintering microcrystalline alumina toughening ceramic particle and low-temperature sintering disclosed in CN103172353A
The composition of microcrystalline alumina toughening ceramic mill ball is identical, and it by mass percent is：10%-40% kaolin, 10%-30%
Silicon powder, the host material of 15%-40% microcrystalline alumina and mass percent are：0.5%-5% calcium carbonate, 0.5%-
5% magnesium carbonate, 0.5%-5% potassium carbonate, the sintering aid of 0.5%-5% sodium carbonate sinter after mixing and obtain.
It is 1000- in temperature that described abrasion resistant particles are alternatively the mixture such as aluminum oxide, silica, calcium carbonate, potassium carbonate
1400 DEG C, sintering time is the sinter particles of formation after 2-3h.
The abrasive media that the utility model provides can increase the contact area in material contact process, advantageously in thing
The micronization of material；Grinding efficiency can be greatly improved, reduce and grind cost, and reduce the hard damage being ground particle surface
Wound；In addition it is possible to adjust the grain size distribution of particle, improve the performance of material, reduce the pollution to finished product, reduce power consumption, fall
Noise in running for the low grinder.
Described abrasive media wearing layer, intermediate layer and sandwich layer are aluminum silicate layer, low cost, have higher wearability；
And, the abrasion resistant particles comprising in described wearing layer are so that described abrasive media will not be worn through in use.
The abrasive media smooth in appearance rounding that the utility model provides, no color differnece, crackle, Rong Dong, burning and raw burn defect.
Grinding steps be applied to water-coal-slurry product preparation process for the abrasive media that the utility model provides, including ultra-fine
Mill and fine grinding, especially can be widely used for ultra-fine grinding mill Particle size requirements is 5-10 μm or atomizer mill Particle size requirements grinding for 15-20 μm
Mill.
Hole in each body layer by layer of described wearing layer, intermediate layer and sandwich layer increases successively so that described wearing layer, intermediate layer
It is sequentially reduced with the density of sandwich layer, overall upper density assumes gradient distribution, further increases the wearability of described abrasive media.
The particle diameter of described abrasion resistant particles is 0.01-0.1mm, such as 0.02mm, 0.03mm, 0.05mm, 0.08mm or 0.09mm
Deng the particle diameter of described abrasion resistant particles can be adjusted according to ature of coal difference.
The particle size of described abrasive media is 1-10mm, such as 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm or 9mm etc.,
The particle size of described abrasive media can be adjusted according to ature of coal difference.
The ratio of the thickness of described wearing layer and the radius of abrasive media is 0.3-0.4, such as 0.31,0.32,0.33,0.35,
0.37 or 0.38 etc..This ratio ratio under same units for the thickness of wearing layer and the radius of abrasive media spheroid.
The ratio of the thickness in described intermediate layer and the radius of abrasive media is 0.3-0.4, such as 0.32,0.33,0.34,0.35,
0.37 or 0.39 etc..
Described sandwich layer is spherical, and the ratio of the radius of described sandwich layer and abrasive media radius is 0.2-0.4, such as 0.23,0.25,
0.27th, 0.29,0.32,0.35 or 0.38 etc..
Compared with prior art, the beneficial effects of the utility model are：
The abrasive media that the utility model provides can increase the contact area in material contact process, advantageously in thing
The micronization of material, greatly improves grinding efficiency, and reduces the hard damage of particle surface；In addition, the granularity of adjustable particle
Level is joined, and improves the performance of material, reduces the pollution to finished product, reduces noise in running for the grinding machine, reduces power consumption；
The abrasive media that the utility model provides can be used as the wear-resisting abrasive media of ultra-thin slurries, surpasses for water-coal-slurry product
In the crushing material grinding machine of fine grinding and fine grinding, can be widely used for ultra-fine grinding mill Particle size requirements is 5-10 μm or atomizer mill Particle size requirements
Process of lapping for 15-20 μm, makes the preparation technology of water-coal-slurry be easier to realize.
Brief description
The structural representation of the wear-resisting abrasive media of ultra-thin slurries that Fig. 1 provides for embodiment 1.
Wherein, 1, wearing layer；2, abrasion resistant particles；3, intermediate layer；4, sandwich layer.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
Embodiment 1
A kind of wear-resisting abrasive media of ultra-thin slurries, as shown in Figure 1.Described abrasive media is solid sphere, by wearing layer
1st, abrasion resistant particles 2, intermediate layer 3 and sandwich layer 4 are constituted, and intermediate layer 3 is wrapped in the surface of sandwich layer 4, and wearing layer 1 is wrapped in intermediate layer 3
Surface, comprise abrasion resistant particles 2 in wearing layer 1；The thickness of wearing layer 1 is 0.3 with the ratio of the radius of solid sphere；Abrasion resistant particles
2 particle diameter is 0.01mm；The particle size of abrasive media is 1mm；The thickness in intermediate layer 3 with the ratio of the radius of abrasive media is
0.3；Sandwich layer 4 is spherical, and the radius of sandwich layer 4 is 0.4 with the ratio of the radius of abrasive media；
Wearing layer 1, intermediate layer 3 and sandwich layer 4 are aluminum silicate layer；In wearing layer 1, intermediate layer 3 and each body layer by layer of sandwich layer 4
Hole increases successively so that the density of wearing layer 1, intermediate layer 3 and sandwich layer 4 is sequentially reduced；Abrasion resistant particles 2 are low-temperature sintering crystallite
Aluminum oxide toughening ceramic particle.
Embodiment 2
A kind of wear-resisting abrasive media of ultra-thin slurries, described abrasive media is solid sphere, by wearing layer 1, abrasion resistant particles
2nd, intermediate layer 3 and sandwich layer 4 are constituted, and intermediate layer 3 is wrapped in the surface of sandwich layer 4, and wearing layer 1 is wrapped in the surface in intermediate layer 3, wear-resisting
Abrasion resistant particles 2 are comprised in layer 1；The thickness of wearing layer 1 is 0.4 with the ratio of the radius of solid sphere；The particle diameter of abrasion resistant particles 2 is
0.1mm；The particle size of abrasive media is 10mm；The thickness in intermediate layer 3 is 0.4 with the ratio of the radius of abrasive media；Sandwich layer is
Spherical, sandwich layer 4 is spherical, and the radius of sandwich layer 4 is 0.2 with the ratio of the radius of abrasive media；
Wearing layer 1, intermediate layer 3 and sandwich layer 4 are aluminum silicate layer；In wearing layer 1, intermediate layer 3 and each body layer by layer of sandwich layer 4
Hole increases successively so that the density of wearing layer 1, intermediate layer 3 and sandwich layer 4 is sequentially reduced；Abrasion resistant particles 2 are low-temperature sintering crystallite
Aluminum oxide toughening ceramic particle.
Embodiment 3
A kind of wear-resisting abrasive media of ultra-thin slurries, described abrasive media is solid sphere, by wearing layer 1, abrasion resistant particles
2nd, intermediate layer 3 and sandwich layer 4 are constituted, and intermediate layer 3 is wrapped in the surface of sandwich layer 4, and wearing layer 1 is wrapped in the surface in intermediate layer 3, wear-resisting
Abrasion resistant particles 2 are comprised in layer 1；The thickness of wearing layer 1 is 0.35 with the ratio of the radius of solid sphere；The particle diameter of abrasion resistant particles 2 is
0.05mm；The particle size of abrasive media is 5mm；The thickness in intermediate layer 3 is 0.35 with the ratio of the radius of abrasive media；Sandwich layer 4
For spherical, the radius of sandwich layer 4 is 0.3 with the ratio of the radius of abrasive media；
Wearing layer 1, intermediate layer 3 and sandwich layer 4 are aluminum silicate layer；In wearing layer 1, intermediate layer 3 and each body layer by layer of sandwich layer 4
Hole increases successively so that the density of wearing layer 1, intermediate layer 3 and sandwich layer 4 is sequentially reduced；Abrasion resistant particles 2 are low-temperature sintering crystallite
Aluminum oxide toughening ceramic particle.
Embodiment 4
A kind of wear-resisting abrasive media of ultra-thin slurries, described abrasive media is solid sphere, by wearing layer 1, abrasion resistant particles
2nd, intermediate layer 3 and sandwich layer 4 are constituted, and intermediate layer 3 is wrapped in the surface of sandwich layer 4, and wearing layer 1 is wrapped in the surface in intermediate layer 3, wear-resisting
Abrasion resistant particles 2 are comprised in layer 1；The thickness of wearing layer 1 is 0.35 with the ratio of the radius of solid sphere；The particle diameter of abrasion resistant particles 2 is
0.05mm；The particle size of abrasive media is 5mm；The thickness in intermediate layer 3 is 0.35 with the ratio of the radius of abrasive media；Sandwich layer 4
For spherical, the radius of sandwich layer 4 is 0.3 with the ratio of the radius of abrasive media；
Wearing layer 1, intermediate layer 3 and sandwich layer 4 are 50 parts of alumina powder and the silicon dioxide powder of 55 weight portions 1400
DEG C, the aluminum silicate layer that sintering 3h is formed；Hole in each body layer by layer of wearing layer 1, intermediate layer 3 and sandwich layer 4 increases so that resistance to successively
The density of mill layer 1, intermediate layer 3 and sandwich layer 4 is sequentially reduced；Abrasion resistant particles 2 are by aluminum oxide, silica, calcium carbonate, carbonic acid
Potassium, magnesia and zirconic mixture, at 1400 DEG C, sinter the sinter particles that 3h is formed.
Embodiment 5
A kind of abrasive media, in addition to not comprising abrasion resistant particles in wearing layer, remaining is same as Example 1.
Embodiment 6
Respectively with the abrasive media described in embodiment 1, embodiment 4 and the abrasive media described in embodiment 5 and commercially available grinding
Grinding media (Zirconium silicate grinding ball), the abrasive media of atomizer mill grinds the low-order coal that particle diameter is 30 μm, and preparation average grain diameter is 5 μm
Coal dust, ratio of grinding media to material is 1:3.
Find after the completion of grinding, the milling time needed for the abrasive media being provided using embodiment 1 and embodiment 4 substantially than
Short using the milling time needed for the abrasive media described in commercially available abrasive media and embodiment 5, used by whole process of lapping
Electric energy substantially reduces by 3 percentage points, and grinds the hard damage on the pulverized coal particle surface obtaining and substantially tail off；In addition, coal dust
The pollution of grain reduces, and noise in running for the atomizer mill is low.
Applicant states, the foregoing is only specific embodiment of the present utility model, but protection model of the present utility model
Enclose and be not limited thereto, person of ordinary skill in the field is it will be clearly understood that any belong to those skilled in the art and exist
In the technical scope that the utility model discloses, the change or replacement that can readily occur in, all fall within protection domain of the present utility model
Within the scope of disclosure.
Claims (7)
1. a kind of wear-resisting abrasive media preparing ultra-thin slurries is it is characterised in that described abrasive media is spherical, described grinding
Medium includes wearing layer, abrasion resistant particles, intermediate layer and sandwich layer, and described intermediate layer is wrapped in core layer surface, described wearing layer parcel
In interlayer surfaces, described wearing layer, intermediate layer and sandwich layer are aluminum silicate layer, comprise abrasion resistant particles, institute in described wearing layer
Stating abrasion resistant particles is low-temperature sintering microcrystalline alumina toughening ceramic particle.
2. abrasive media according to claim 1 is it is characterised in that each body layer by layer of described wearing layer, intermediate layer and sandwich layer
In hole increase successively.
3. abrasive media according to claim 1 and 2 is it is characterised in that the particle diameter of described abrasion resistant particles is 0.01-
0.1mm.
4. abrasive media according to claim 1 and 2 is it is characterised in that the particle size of described abrasive media is 1-
10mm.
5. abrasive media according to claim 1 and 2 is it is characterised in that the thickness of described wearing layer and abrasive media
The ratio of radius is 0.3-0.4.
6. abrasive media according to claim 1 and 2 is it is characterised in that the thickness in described intermediate layer and abrasive media
The ratio of radius is 0.3-0.4.
7. abrasive media according to claim 1 and 2 is it is characterised in that described sandwich layer is spherical, the radius of described sandwich layer
Ratio with the radius of abrasive media is 0.2-0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620790112.6U CN205953917U (en) | 2016-07-25 | 2016-07-25 | Prepare wear -resisting attrition medium of superfine coal slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620790112.6U CN205953917U (en) | 2016-07-25 | 2016-07-25 | Prepare wear -resisting attrition medium of superfine coal slurry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832354A (en) * | 2017-02-24 | 2017-06-13 | 上海纳琳科新材料科技有限公司 | A kind of preparation method for optical thin film hardening wear-resistant plastic particle |
| CN107151549A (en) * | 2017-05-26 | 2017-09-12 | 江苏省江南新型复合研磨材料及制品工程技术研究中心有限公司 | A kind of high intensity wear-resistant anticorrosion abrasive material and preparation method thereof |
| CN116768607A (en) * | 2023-06-01 | 2023-09-19 | 广东佛山市陶瓷研究所控股集团股份有限公司 | Wear-resistant zirconium-aluminum composite ceramic ball with gradient structure and preparation method thereof |
-
2016
- 2016-07-25 CN CN201620790112.6U patent/CN205953917U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832354A (en) * | 2017-02-24 | 2017-06-13 | 上海纳琳科新材料科技有限公司 | A kind of preparation method for optical thin film hardening wear-resistant plastic particle |
| CN107151549A (en) * | 2017-05-26 | 2017-09-12 | 江苏省江南新型复合研磨材料及制品工程技术研究中心有限公司 | A kind of high intensity wear-resistant anticorrosion abrasive material and preparation method thereof |
| CN116768607A (en) * | 2023-06-01 | 2023-09-19 | 广东佛山市陶瓷研究所控股集团股份有限公司 | Wear-resistant zirconium-aluminum composite ceramic ball with gradient structure and preparation method thereof |
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