CN106478123A - A kind of oxidation fused alumina zirconia composite ceramic body and its production technology for cement grinding mill - Google Patents
A kind of oxidation fused alumina zirconia composite ceramic body and its production technology for cement grinding mill Download PDFInfo
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Abstract
The invention discloses a kind of oxidation fused alumina zirconia composite ceramic body and its production technology for cement grinding mill.The raw material of the ceramic body is made up of alumina powder, alumina whisker, zirconium oxide and bonding agent；Its production technology is comprised the following steps：Above-mentioned raw materials and water are put into ball mill carries out wet-milling, and it is old to be put into mud pit stirring after sieving, then through except powder by spraying is carried out in input spray drying tower after iron, being then delivered to old in big material bin；Powder after will be old becomes base using extrusion molding or injection molding method, sends into temperature-gradient method sintering in hyperthermia tunnel Kiln therewith, finally sintered products, water and boron nitride is put into ball mill and is ground, and then goes out after mill dries and packs.The invention provides a kind of spherical ceramic body has smooth surface, with hardness is big, the excellent properties such as wearability is strong, impact resistance is big, equivalent abrasion are little, while the service life of ceramic body is extended, production cost reduced, improve production efficiency.
Description
Technical field
The present invention relates to category Inorganic Non-metallic Materials（Pottery）Field, specifically a kind of oxidation for cement grinding mill
Zirconium-corundum composite ceramic body and its production technology.
Background technology
Ball mill is widely used in the fields such as metallurgy, mineral products, building materials, chemical industry, is a kind of using extremely wide disintegrating apparatus.
Abrasive media is the key of ball mill comminuting matter, relies on rolling of the abrasive media in ball mill, shock, extruding, friction etc.
Various complicated motions, by crushing material.Therefore, the quality of abrasive media, not only directly influences the height of production efficiency, and
And also affect the quality of product.Abrasive media is mainly：Ceramic material and metal steel ball, but metal steel ball quality is big, work
When making, power consumption is high, and the carbon emission that brings is big, affects energy efficiency and environmental protection；In addition, steel abrading-ball is yielding, easy to stick each other
Even, the uniformity of cement particle mean size is affected, and strength of cement fluctuation is big, the later stage easily occurs irregular deformation；And ceramic material because
High-melting-point, high rigidity and the excellent properties such as heat-resisting are widely used in the industries such as mineral products, metallurgy, chemical industry, food, building materials.
At present, advanced ceramic material is broadly divided into function ceramics material according to the difference of its range and the characteristic of material
Material and structural ceramic material.Structural ceramic material referred to high temperature resistant antiwear characteristic, can be used as high-performance mechanical structure zero
The pottery of part new material, quartz, glass, aluminium oxide ceramics, zirconia ceramics, aluminosilicate pottery, composite ceramics etc. belong to structure
Ceramic material.As zirconia ceramics mill ball, Zirconium silicate ceramic mill ball these belong to high-end grinding-material than great, performance
Good, but cost is higher；And other conventional ceramic mill balls, glass marble grinding efficiency are low, abrasion are high, low intensity.Therefore need
Want a kind of have the advantages that hardness is big, density is big, pollution-free to material or pollution very little, wearability is strong, production efficiency is high answers
Ceramic body is closed, so that composite ceramic body is more widely applied.
Content of the invention
The purpose of invention is to solve the deficiency of above-mentioned technical problem, provides a kind of zirconium oxide for cement grinding mill-just
Beautiful composite ceramic body and its production technology, improve the wearability of composite ceramic body, hardness, impact resistance, extend which and use the longevity
Life, while reduce production cost, improve production efficiency and environmental protection.
The present invention is that the technical scheme that the deficiency of solution above-mentioned technical problem is adopted is：A kind of oxygen for cement grinding mill
Change zirconium-corundum composite ceramic body, with smooth surface, be shaped as spherical, 3.7 g/cm of bulk density ＞3, Mohs' hardness is
9, water absorption ＜ 0.01%, equivalent wear away ＜ 0.05%, and the raw material of zirconium oxide-corundum composite ceramic body is by alumina powder, oxygen
Change al whisker, zirconium oxide and bonding agent composition, the parts by weight of each material and additional proportion are：Alumina powder 97-99 part, oxygen
Change al whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent 0.05-0.1 part.
The present invention, described alumina powder particle diameter are 0.1-2 μm.
The present invention, described zirconium oxide are nano particle, and particle diameter is 4-60nm.
The present invention, described alumina whisker average diameter are 0.5-2 μm, and average length is 8-100 μm.
The present invention, described bonding agent are La2O3、Y2O3、SiO2、TiO2, CaO, MgO, in talcum any one or many
Plant mixture.
A kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill, comprises the following steps：
Step one：By alumina powder 97-99 part, alumina whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent
0.05-0.1 part is put into ball mill, adds water to carry out wet-milling, during operation 30-45, crosses 0.063mm and sifts out mill and be put in mud pit and stir
Old 36-50h is mixed, then carries out the slip of water content 60% being obtained except iron, standby；
Step 2：Powder by spraying is carried out in the slip input spray drying tower that step one is obtained, by dried powder carry
The powder that old 2-4 days obtain water content 1.5-3% in big material bin, standby；
Step 3：The powder that step 2 is obtained becomes base using extrusion molding or injection molding method, obtains water content 0.5-
1% spherical base substrate；
Step 4：The spherical base substrate that step 3 is obtained is placed in room temperature in advance, makes spherical base substrate temperature be down to 10-150 DEG C, so
Send in hyperthermia tunnel Kiln afterwards and sinter, through sintered products being in 1300-1380 DEG C of insulation 5.5-8h；
Step 5：The sintered products that step 4 is obtained, place into ball mill, add water and boron nitride to be ground, grind 5-
Go out after 24h after mill dries and pack.
The present invention, slip fineness D50≤1.2 μm obtained in described step one.
The present invention, in described step four, sintering temperature-rise period is divided into three sections：
a:Spherical base substrate is preheating to 500 DEG C, heating rate is 11-20 DEG C/min, temperature retention time is 0.5-2h；
b:Spherical base substrate is warmed up to 1000 DEG C from 500 DEG C, heating rate is 6-10 DEG C/min, temperature retention time is 1-3h；
c:Spherical base substrate is warmed up to 1300-1380 DEG C from 1000 DEG C, heating rate is 1-5 DEG C/min, temperature retention time is 5.5-
8h.
The present invention, when grinding in described step five, the ratio that adds by weight of sintered products, water and boron nitride is：
100 parts of sintered products, 10 parts of water, 1 part of boron nitride.
The present invention, the granularity of described boron nitride is 20-200nm.
The invention has the beneficial effects as follows：
1. raw material employs average diameter for the alumina whisker that 0.5-2 μm, average length are 8-100 μm, has in ceramic body
There are bridging, pinning, deflection etc. to act on, not only significantly improve ceramic body intensity, wearability, heat resistance and thermal fatigue property；With
When, alumina whisker light weight, ceramic body lighter in weight is made, is consumed energy relatively low, reduces production cost.
2. nano-particulate zirconium oxide is adopted in raw material so that the pore in ceramic body or flaw size greatly reduce, and improve
The fracture toughness of ceramic body；The intercrystalline sliding of nano-particulate zirconium oxide causes ceramic body to show the superplasticity of uniqueness；With
When nano particle be pressed into type after, the presence of nanoscale disperse phase causes ceramic body to produce excellent Strengthening and Toughening effect, relatively low
At a temperature of sinter the purpose that can just reach compactness, and excellent performance.
3. in the ceramic body production technology, sintering temperature-rise period takes temperature-gradient method, and mates not in different temperature sections
Same heating rate, while all certain temperature retention times of precise control after heating up at each section；For example in sintering process, by ball
Shape base substrate is preheating to 500 DEG C, and heating rate is 11-20 DEG C/min, and spherical base substrate is warmed up to 1000 DEG C from 500 DEG C, and heat up speed
Rate is 6-10 DEG C/min, and spherical base substrate is warmed up to 1300-1380 DEG C from 1000 DEG C, and heating rate is 1-5 DEG C/min, applicant
Found by many experiments：The most reasonable using above-mentioned three-stage heating mode；Secondly all apply after heating up each time certain
Temperature retention time, above-mentioned steps cause ceramic body to obtain preferably densified effect, so as to improve ceramic body hardness, wear-resisting
The performances such as property, impact resistance.
4. after sintering, sintered products are placed again into ball mill, add water and boron nitride to be ground, herein, added
The boron nitride for entering realizes two kinds of effects：Firstly, since the hardness of boron nitride itself is higher, there is defect or table to some surfaces
The internal defective sintered ceramic body of layer has certain destruction, for such surface defect larger, hardness is little, anti-pressure ability
As abrasion is larger and screened out during post forming, this is used for cement to follow-up ceramic body to little ceramic body
Improve production efficiency, ensureing that product quality has a great impact, if now do not screened, subsequently preparing cement process
In, surface has the ceramic body that defect, hardness are little, anti-pressure ability is little and is just deteriorated in a short period of time, not only accelerates
The breaking-up speed of other normal ceramic bodies, so as to reduce the service life of ceramic body, and the ceramic body for fracturing or break up can also
The quality of impact cement, has certain pollution to cement, affects production efficiency, wastes financial resources and manpower；Secondly, using harder
Boron nitride, while limit its granularity as 20-200nm, it is achieved that in process of lapping in the presence of TRANSIENT HIGH TEMPERATURE high pressure, coarse
There is the contact between solid on the contact on surface, and solid friction is produced, boron nitride has fabulous greasy property and high temperature
Stability, even boron nitride still can keep its lubricity and inertia at very high temperatures, boron nitride in process of lapping
Surface of ceramic body contact can be reduced, formation and the extension adhesion of crystal boundary micro-crack is prevented, reduces micro-crack interconnected
Big crackle is formed together to cause the dial-out of crystal grain or rupture so as to the life-span for reducing ceramic body, improve the table of ceramic body product
Face cleanliness makes which obtain good surface quality.
5. the ceramic body hardness that prepared by the present invention is high, has efficiently controlled the fineness of cement flour, has prepared fineness uniform
The same batch of cement flour for causing, and the cement performance for preparing is stable, scattered error is less, strength fluctuation is less, cleanliness is high so as to the later stage is not
Irregular deformation, safety and quality can be occurred to be ensured；Ceramic body is high temperature resistant, will not soften under the high temperature conditions,
Deformation or adhesion, can adapt to long-time, the working environment of high intensity；Lightweight, bulk density is more than 3.7g/cm3, equivalent mill
Consumption is little, and less than 0.05%, life-span length, replacement cycle are long, and material consumption is low, reduce cost；Additionally, during cement flour grinds
Will not there is contamination phenomenon because adding chromium, be a kind of green material, meet national industrial policies；The ceramic body is nonmetallic
Material, in grinding operation, rate of heat transfer is slow, significantly reduce temperature and cement products temperature in cement grinding mill, it is to avoid cement
The dehydration problem of middle gypsum.Therefore the ceramic body property indices of the invention effectively improve, with very high value and
Create meaning.
Specific embodiment
The present invention is a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill and its production technology, and which is specifically real
The mode of applying is：
A kind of zirconium oxide-corundum composite ceramic body for cement grinding mill, with smooth surface, is shaped as spherical, bulk density
3.7 g/cm of ＞3, Mohs' hardness is 9, and water absorption ＜ 0.01%, equivalent wear away ＜ 0.05%, zirconium oxide-corundum composite ceramic body
Raw material be made up of alumina powder, alumina whisker, zirconium oxide and bonding agent, the parts by weight of each material and additional proportion
It is：Alumina powder 97-99 part, alumina whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent 0.05-0.1 part.
The present invention, described alumina powder particle diameter are 0.1-2 μm.
The present invention, described zirconium oxide are nano particle, and particle diameter is 4-60nm.
The present invention, described alumina whisker average diameter are 0.5-2 μm, and average length is 8-100 μm.
The present invention, described bonding agent are La2O3、Y2O3、SiO2、TiO2, CaO, MgO, in talcum any one or many
Plant mixture.
A kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill, comprises the following steps：
Step one：By alumina powder 97-99 part, alumina whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent
0.05-0.1 part is put into ball mill, adds water to carry out wet-milling, during operation 30-45, crosses 0.063mm and sifts out mill and be put in mud pit and stir
Old 36-50h is mixed, then carries out the slip of water content 60% being obtained except iron, standby；
Step 2：Powder by spraying is carried out in the slip input spray drying tower that step one is obtained, by dried powder carry
The powder that old 2-4 days obtain water content 1.5-3% in big material bin, standby；
Step 3：The powder that step 2 is obtained becomes base using extrusion molding or injection molding method, obtains water content 0.5-
1% spherical base substrate；
Step 4：The spherical base substrate that step 3 is obtained is placed in room temperature in advance, makes spherical base substrate temperature be down to 10-150 DEG C, so
Send in hyperthermia tunnel Kiln afterwards and sinter, through sintered products being in 1300-1380 DEG C of insulation 5.5-8h；
Step 5：The sintered products that step 4 is obtained, place into ball mill, add water and boron nitride to be ground, grind 5-
Go out after 24h after mill dries and pack.
The present invention, slip fineness D50≤1.2 μm obtained in described step one.
The present invention, in described step four, sintering temperature-rise period is divided into three sections：
a:Spherical base substrate is preheating to 500 DEG C, heating rate is 11-20 DEG C/min, temperature retention time is 0.5-2h；
b:Spherical base substrate is warmed up to 1000 DEG C from 500 DEG C, heating rate is 6-10 DEG C/min, temperature retention time is 1-3h；
c:Spherical base substrate is warmed up to 1300-1380 DEG C from 1000 DEG C, heating rate is 1-5 DEG C/min, temperature retention time is 5.5-
8h.
The present invention, when grinding in described step five, the ratio that adds by weight of sintered products, water and boron nitride is：
100 parts of sintered products, 10 parts of water, 1 part of boron nitride.
The present invention, the granularity of described boron nitride is 20-200nm.
Ceramic body as herein described has smooth surface and refers to that the surface of ceramic body for preparing is bright and clean, zero defect and draws
Trace, the surface roughness Ra=3-5nm of ceramic body after testing.
Embodiment 1
The parts by weight of each material of the raw material of zirconium oxide-corundum composite ceramic body and additional proportion are：Particle diameter is 0.1 μm of oxidation
97 parts of aluminium micro mist, alumina whisker 0.1-0.5 part that average diameter is 0.5 μm, average length is 8 μm, particle diameter are the nanometer of 4nm
Zirconium oxide 0.4-2.5 part, talcum and Y2O30.05-0.1 part（Talcum：Y2O3=1:1）.
It is 97 parts of the alumina powder that particle diameter is 0.1 μm first by particle diameter, average diameter is 0.5 μm, average length is 8 μm
Alumina whisker 0.1-0.5 part, particle diameter is nano zircite 0.4-2.5 part of 4nm, talcum and Y2O30.05-0.1 part（Sliding
Stone：Y2O3=1:1）Ball mill is put into, adds water that wet-milling is carried out, during operation 30-45,0.063mm sifts out mill and is put in mud pit excessively
Old 36-50h is stirred, then carries out the slip of water content 60% being obtained except iron, then carry out spraying system in input spray drying tower
Powder, by the dried powder carry powder that old 2-4 days obtain water content 1.5-3% in big material bin, by powder using extruding
Shaping or injection molding method become base, obtain the spherical base substrate of water content 0.5-1%；In advance spherical base substrate is placed in room temperature,
Make spherical base substrate temperature that 10-150 DEG C is down to, be then fed into sintering in hyperthermia tunnel Kiln, first spherical base substrate be preheating to 500 DEG C,
Heating rate is 13 DEG C/min, and temperature retention time is 1h；Then its heating rate is set to 8 DEG C/min, temperature is warmed up to 1000 DEG C,
Temperature retention time is 2h；Finally by temperature with the ramp of 3 DEG C/min to 1350 DEG C, temperature retention time is sintered products for 6h；
Then again 100 parts of sintered products, 10 parts of water, granularity are put into ball mill for 1 part of the boron nitride of 20nm and are ground, after grinding 5h
Go out after mill dries and pack.
Embodiment 2
The parts by weight of each material of the raw material of zirconium oxide-corundum composite ceramic body and additional proportion are：Particle diameter is 2 μm of aluminum oxide
99 parts of micro mist, 0.3 part of the alumina whisker that average diameter is 2 μm, average length is 100 μm, particle diameter are nano oxidized for 60nm's
0.6 part of zirconium, Y2O30.1 part.
First by 99 parts of the alumina powder that particle diameter is 2 μm, the aluminum oxide that average diameter is 2 μm, average length is 100 μm
0.3 part of whisker, particle diameter are 0.6 part of the nano zircite of 60nm, Y2O30.1 part is put into ball mill, adds water to carry out wet-milling, operation
During 30-45, cross 0.063mm and sift out mill and be put in mud pit and old 36h is stirred, then carry out the slip of water content 60% being obtained except iron,
Then powder by spraying is carried out in input spray drying tower, dried powder carry is transported to old 2-4 days in big material bin and is obtained
To the powder of water content 3%, powder is become base using extrusion molding or injection molding method, obtains the spherical of water content 0.5%
Base substrate；In advance spherical base substrate is placed in room temperature, make spherical base substrate temperature that 10-150 DEG C is down to, be then fed in hyperthermia tunnel Kiln
Spherical base substrate is first preheating to 500 DEG C by sintering, and heating rate is 11 DEG C/min, and temperature retention time is 0.5h；Then heated up speed
Calibration is 6 DEG C/min, and temperature is warmed up to 1000 DEG C, and temperature retention time is 3h；Finally temperature is arrived with the ramp of 4 DEG C/min
1350 DEG C, temperature retention time is 5.5h, as sintered products；Then again by 100 parts of sintered products, 10 parts of water, granularity for 40nm's
1 part of boron nitride is put into ball mill and is ground, and goes out after mill dries to pack after grinding 24h.
Embodiment 3
The parts by weight of each material of the raw material of zirconium oxide-corundum composite ceramic body and additional proportion are：Particle diameter is 1 μm of aluminum oxide
98 parts of micro mist, 0.1 part of the alumina whisker that average diameter is 1 μm, average length is 60 μm, particle diameter are the nano zircite of 10nm
1.8 parts, SiO2, CaO, MgO0.1 part（SiO2: CaO: MgO =1:1:2）.
First above-mentioned dispensing is put into ball mill, adds water that wet-milling is carried out, during operation 40,0.063mm sifts out mill and is put into excessively
Old 50h is stirred in mud pit, then carries out obtaining the slip of water content 60% except iron, then sprayed in input spray drying tower
Mist powder, by dried powder carry in big material bin the old powder for obtaining water content 2% for 4 days, by powder using being squeezed into
The method of type becomes base, obtains the spherical base substrate of water content 1%；In advance spherical base substrate is placed in room temperature, drop spherical base substrate temperature
To 10-150 DEG C, be then fed in hyperthermia tunnel Kiln sinter, first spherical base substrate is preheating to 500 DEG C, heating rate be 15 DEG C/
Min, temperature retention time are 1.5h；Then its heating rate is set to 10 DEG C/min, temperature is warmed up to 1000 DEG C, temperature retention time is
3h；Finally by temperature with the ramp of 5 DEG C/min to 1300 DEG C, temperature retention time is sintered products for 8h；Then will burn again
100 parts of product of knot, 10 parts of water, granularity are put into ball mill for 1 part of the boron nitride of 100nm and are ground, and go out to grind drying after grinding 16h
After pack.
Embodiment 4
The parts by weight of each material of the raw material of zirconium oxide-corundum composite ceramic body and additional proportion are：Particle diameter is 0.8 μm of oxidation
97.5 parts of aluminium micro mist, 0.5 part of the alumina whisker that average diameter is 1.5 μm, average length is 100 μm, particle diameter are 20nm nanometer
1.92 parts of zirconium oxide, Y2O3、SiO2, 0.08 part of CaO, MgO（Y2O3:SiO2: CaO: MgO =1:1:1:1）.
First above-mentioned dispensing is put into ball mill, adds water that wet-milling is carried out, during operation 30-45,0.063mm sifts out mill and puts excessively
Enter in mud pit to stir old 48h, then carry out the slip of water content 60% being obtained except iron, then carry out in input spray drying tower
Powder by spraying, by dried powder carry in big material bin the old powder for obtaining water content 1.5% for 3 days, will powder using squeeze
Molded or injection molding method becomes base, obtains the spherical base substrate of water content 0.7%；In advance spherical base substrate is placed in room temperature,
Make spherical base substrate temperature that 10-150 DEG C is down to, be then fed into sintering in hyperthermia tunnel Kiln, first spherical base substrate be preheating to 500 DEG C,
Heating rate is 20 DEG C/min, and temperature retention time is 2h；Then its heating rate is set to 7 DEG C/min, temperature is warmed up to 1000 DEG C,
Temperature retention time is 1h；Finally by temperature with the ramp of 2 DEG C/min to 1380 DEG C, temperature retention time is to sinter for 6.5h and produces
Product；Then again 100 parts of sintered products, 10 parts of water, granularity are put into ball mill for 1 part of the boron nitride of 200nm and are ground, grinding
Go out after 18h after mill dries and pack.
Embodiment 5
The parts by weight of each material of the raw material of zirconium oxide-corundum composite ceramic body and additional proportion are：Particle diameter is 0.5 μm of oxidation
97.3 parts of aluminium micro mist, 0.1 part of the alumina whisker that average diameter is 1 μm, average length is 40 μm, particle diameter are the nano oxygen of 30nm
Change 2.5 parts of zirconium, La2O3、SiO2、TiO2, 0.1 part of CaO, MgO（La2O3:SiO2:TiO2:CaO: MgO =1:1:1:1:1）.
First above-mentioned dispensing is put into ball mill, adds water that wet-milling is carried out, during operation 30-45,0.063mm sifts out mill and puts excessively
Enter in mud pit to stir old 48h, then carry out the slip of water content 60% being obtained except iron, then carry out in input spray drying tower
Powder by spraying, by dried powder carry in big material bin the old powder for obtaining water content 1.5% for 2 days, will powder using squeeze
Molded or injection molding method becomes base, obtains the spherical base substrate of water content 0.5-1%；In advance spherical base substrate is put in room temperature
Put, make spherical base substrate temperature that 10-150 DEG C is down to, be then fed into sintering in hyperthermia tunnel Kiln, first spherical base substrate be preheating to 500
DEG C, heating rate is 12 DEG C/min, and temperature retention time is 2h；Then its heating rate is set to 9 DEG C/min, temperature is warmed up to 1000
DEG C, temperature retention time is 2.5h；Finally by temperature with the ramp of 1 DEG C/min to 1360 DEG C, temperature retention time is for 6h and sinters
Product；Then again 100 parts of sintered products, 10 parts of water, granularity are put into ball mill for 1 part of the boron nitride of 150nm and are ground, grind
Go out after mill dries after mill 5h and pack.
In order to further illustrate the present invention, according to industrial ceramics professional standard, by ceramic body or Ceramic Balls in the bar for specifying
It is ground under part, examines or check the anti-wear performance of ceramic body or Ceramic Balls, the anti-wear performance test data values of ceramic body or Ceramic Balls
See the table below：
From the above results：The equivalent abrasion of the ceramic body prepared using the present invention are less, prepare than market regular convention formula
Ceramic Balls anti-wear performance preferably, while not adding the ceramic body and do not add nanometer that alumina whisker prepares in the feed
The ceramic body wearability that zirconium oxide is prepared is relatively low；In secondary process of lapping, the pottery that boron nitride is prepared also is not added
Body wearability, impact resistance are relatively low, and this shows alumina whisker, the addition of nano zircite and nitrogen in secondary process of lapping
The addition for changing boron all significantly enhances intensity, wearability and the impact resistance of ceramic body, so as to improve grinding efficiency, extends
The service life of ceramic body, reduces enterprise's production capacity, improve production efficiency.
Explanation to above-mentioned disclosed embodiment, only for enabling professional and technical personnel in the field to realize or using this
Bright.The present invention will be not restricted to the embodiments shown herein, and be to fit to consistent with disclosure herein
Most wide scope.
Claims (10)
1. a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill, with smooth surface, is shaped as spherical, and volume is close
Degree 3.7 g/cm of ＞3, Mohs' hardness is 9, and water absorption ＜ 0.01%, equivalent wear away ＜ 0.05%, it is characterised in that and zirconium oxide-
The raw material of corundum composite ceramic body is made up of alumina powder, alumina whisker, zirconium oxide and bonding agent, the weight portion of each material
Number and additional proportion are：Alumina powder 97-99 part, alumina whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent
0.05-0.1 part.
2. a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 1, it is characterised in that：Described
Alumina powder particle diameter be 0.1-2 μm.
3. a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 1, it is characterised in that：Described
Zirconium oxide be nano particle, particle diameter be 4-60nm.
4. a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 1, it is characterised in that：Described
Alumina whisker average diameter be 0.5-2 μm, average length be 8-100 μm.
5. a kind of zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 1, it is characterised in that：Described
Bonding agent be La2O3、Y2O3、SiO2、TiO2, CaO, MgO, any one or more mixture in talcum.
6. a kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill, it is characterised in that comprise the following steps：
Step one：By alumina powder 97-99 part, alumina whisker 0.1-0.5 part, zirconium oxide 0.4-2.5 part and bonding agent
0.05-0.1 part is put into ball mill, adds water to carry out wet-milling, during operation 30-45, crosses 0.063mm and sifts out mill and be put in mud pit and stir
Old 36-50h is mixed, then carries out the slip of water content 60% being obtained except iron, standby；
Step 2：Powder by spraying is carried out in the slip input spray drying tower that step one is obtained, by dried powder carry
The powder that old 2-4 days obtain water content 1.5-3% in big material bin, standby；
Step 3：The powder that step 2 is obtained becomes base using extrusion molding or injection molding method, obtains water content 0.5-
1% spherical base substrate；
Step 4：The spherical base substrate that step 3 is obtained is placed in room temperature in advance, makes spherical base substrate temperature be down to 10-150 DEG C, so
Send in hyperthermia tunnel Kiln afterwards and sinter, through sintered products being in 1300-1380 DEG C of insulation 5.5-8h；
Step 5：The sintered products that step 4 is obtained, place into ball mill, add water and boron nitride to be ground, grind 5-
Go out after 24h after mill dries and pack.
7. a kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 6, its feature
It is, slip fineness D50≤1.2 μm obtained in described step one.
8. a kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 6, its feature
It is, in described step four, sintering temperature-rise period is divided into three sections：
a:Spherical base substrate is preheating to 500 DEG C, heating rate is 11-20 DEG C/min, temperature retention time is 0.5-2h；
b:Spherical base substrate is warmed up to 1000 DEG C from 500 DEG C, heating rate is 6-10 DEG C/min, temperature retention time is 1-3h；
c:Spherical base substrate is warmed up to 1300-1380 DEG C from 1000 DEG C, heating rate is 1-5 DEG C/min, temperature retention time is 5.5-
8h.
9. a kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 6, its feature
It is, the ratio that sintered products, water and boron nitride are added by weight when grinding in described step five is：Sintered products
100 parts, 10 parts of water, 1 part of boron nitride.
10. a kind of production technology of the zirconium oxide-corundum composite ceramic body for cement grinding mill as claimed in claim 6, which is special
Levy and be, the granularity of described boron nitride is 20-200nm.
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| CN115340369A (en) * | 2022-10-18 | 2022-11-15 | 山东合创明业精细陶瓷有限公司 | Ternary complex phase wear-resistant ceramic ball and preparation method thereof |
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