CN105859261A - Ceramic grinding section for cement ball mill, and preparation method thereof - Google Patents
Ceramic grinding section for cement ball mill, and preparation method thereof Download PDFInfo
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- CN105859261A CN105859261A CN201610199245.0A CN201610199245A CN105859261A CN 105859261 A CN105859261 A CN 105859261A CN 201610199245 A CN201610199245 A CN 201610199245A CN 105859261 A CN105859261 A CN 105859261A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/3817—Carbides
- C04B2235/3821—Boron carbides
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- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
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Abstract
The invention discloses a ceramic grinding section for a cement ball mill, and a preparation method thereof. The ceramic grinding section for the cement ball mill comprises the following raw materials in weight percentage: 92-95% of alumina, 0.5%-2% of silicon nitride, 0.8-3% of kaolin, 0.2-2% of titanium carbide, 1.5-2% of nano boron carbide, 0.8-1% of titanium nitride, and 0.3-2% of tantalum carbide. The ceramic grinding section is in the shape of a ball-column combination body, a corner-rounded cylinder or an up-and-down symmetrical type regular square pyramid. The ceramic grinding section is prepared through the compression moulding and high-temperature sintering process. The preparation method comprises the steps of burdening, ball-milling, spray granulation, ageing in a stock bin, compression processing, high-temperature sintering, powder removing, polishing, finished product drying, and the like. The ceramic grinding section for the cement ball mill has the advantages of high hardness, high wear resistance, high temperature resistance and the like. Meanwhile, the ceramic grinding section is extremely excellent in shock resistance, wear resistance and anti-impact performance.
Description
Technical field
The present invention relates to cement manufacture field, particularly relate to a kind of cement mill ceramic grinding section and preparation side thereof
Method.
Background technology
Cement mill have to material strong adaptability, can produce continuously, broken thin than ground prod big, easily controllable
The features such as degree.The operation principle of conventional cement mill is that material is entered through pan feeding quill shaft spiral equably by feed arrangement
Entering in grinding machine storehouse, have ladder lining board or corrugated liner, built-in different size steel ball or steel section in this storehouse, barrel body rotation produces centrifugal
Power falls after taking steel ball or steel section to certain altitude, and material is produced impact and abrasive action.Cement mill ground section is
Cement machine equipment grinding material medium, produces mill by the collision friction between cement mill ground section, material, liner plate
Cut effect, thus the particle diameter of material is reduced further.Therefore, ground section hardness in use and wearability are that impact is ground
One of principal element of shaping effect, simultaneously as ceaselessly clashed into for a long time, the shock resistance for mill ball has pole
High request.
In prior art, the material of cement mill ground section mostly is tool steel or high carbon stainless steel, material mutually it
Between and material between wear and tear relatively big, surface is easily degraded, and the proportion of goods damageds are big, changes fast；Meanwhile, the mill section quality of steel is big, during work
Power consumption is high, and the carbon emission brought is big, and the pollution of chromium in stainless steel simultaneously is the most disadvantageous for cement, affects energy
Amount efficiency and environmental protection；Additionally some uses hard alloy or ceramic material, and such material can adapt to cement mill very well
Applying working condition, but its cost is high, and during broken, molding, size is wayward, molding rear surface is irregular unanimously.
In sum, how to improve the hardness of cement mill ground section, wearability is the emphasis studied, cement grinding skill
Art is also to efficient, economize on electricity direction fast development.
Pottery, as a kind of novel cement ball mill ceramic grinding ball material, possesses high rigidity, high temperature resistant, corrosion-resistant
Etc. obvious advantage, can substantially overcome disadvantages mentioned above.
In the patent that the present inventor applies on the same day, disclosing a kind of cement mill ceramic grinding section, its formula is passing
The additives such as tungsten carbide, titanium nitride, zirconium oxide have been increased newly, its tool on the basis of the Al2O3-CaO-MgO-SiO2 quaternary system of system
There is relatively low cost and energy consumption is low, material consumption is low, reduce carbon emission, high rigidity, high temperature resistant, high life, easy-formation, good toughness, life
The combination property of a series of excellences such as the cement degree of purity that produces is high, but its antidetonation under limit condition of operation, wear-resisting, shock resistance
Aspect also a bit deficient in.
Summary of the invention
For drawbacks described above present in prior art, it is desirable to provide a kind of, energy consumption is low, material consumption is low, reduce carbon row
Put, high rigidity, high temperature resistant, high life, easy-formation, good toughness, the cement high purity of production and having than traditional ceramics material
More excellent antidetonation, wear-resisting, the cement mill ceramic grinding section of shock resistance.
To achieve these goals, the present invention by the following technical solutions: a kind of cement mill ceramic grinding section, its
Contain aluminium oxide 92-95%, silicon nitride 0.5-2%, Kaolin 0.8-3%, titanium carbide 0.2-2%, nano-sized carbon by weight percentage
Change boron 1.5-2%, titanium nitride 0.8-1%, ramet 0.3-2%.
Above-mentioned cement mill ceramic grinding section, it is shaped as intermediate cross-section and amasss positive four ribs maximum, laterally zygomorphic
Platform, edge rounding.
Above-mentioned cement mill ceramic grinding section, it is shaped as cylinder, and edge rounding, sectional dimension is preferably
10mm × 10mm, 15mm × 15mm, the one in 20mm × 20mm, 25mm × 25mm.
Above-mentioned cement mill ceramic grinding section, it is shaped as goalpost coalition, and centre is cylinder, and two is respectively
Spherical.
The preparation method of above-mentioned cement mill ceramic grinding section, comprises the following steps:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=(7-10): 100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:(0.7-0.75), stop mill to slurry fineness D90≤8 micron, cross 40 mesh sieves and go out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:(2-3): (0.7-0.75), to slurry fineness D50≤1.5 micron, D90≤3.2 micron, stop mill；
(b3) mix grinding: is added in the slurry that step (b2) is obtained PVA solution 9-12% of configuration by weight in step (a), mixed
Mill 0.5-1h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a), and squeezes into height
Position slurry tank, controls the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, selects suitably spraying spray sheet diameter, sprays
Mist pelletize, pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
(e) Profile procoess: powder step (d) obtained becomes base by mould die mould, forming powders moisture control 0.5% with
Under；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles parting sand, send in high temperature kiln, temperature
1350-1700 DEG C, firing period 24-36h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
The preparation method of above-mentioned cement mill ceramic grinding section, wherein: step (c) adds the same of PVA solution
Time, it is additionally added appropriate defoamer.
The preparation method of above-mentioned cement mill ceramic grinding section, wherein: step (e) becomes the powder of base for die mould
Granular size controls as 30-80 mesh.
The preparation method of above-mentioned cement mill ceramic grinding section, wherein: parting sand described in step (f) is 40 mesh
Following white fused alumina.
The preparation method of above-mentioned cement mill ceramic grinding section, wherein: high temperature kiln described in step (f) is tunnel
Kiln, temperature is 1350-1550 DEG C, and firing period is 24-30h.
The preparation method of above-mentioned cement mill ceramic grinding section, wherein: high temperature kiln described in step (f) is shuttle-type
Kiln, temperature is 1450-1700 DEG C, and firing period is 30-36h.
Compared with the prior art, the cement mill of present invention ceramic grinding section, owing to have employed such scheme, difference
In traditional Al2O3-CaO-MgO-SiO2 quaternary system, based on aluminium oxide, it is strong that aluminium oxide series ceramic innately has machinery
The advantages such as degree is high, hardness is high, lightweight, high temperature resistant, resistance to chemical attack, excellent insulating property.Add silicon nitride, titanium carbide, receive
Rice boron carbide, titanium nitride, ramet etc. are as additive, using Kaolin as bonding agent, and wherein silicon nitride hardness height, wearability
Good, heat shock resistance big, titanium nitride fusing point is high, density is relatively low, thermal-shock resistance good, and nano boron carbide Mohs' hardness is high to be reached
9.3, density is low, intensity is big, high temperature and chemical stability good, ramet, titanium carbide hardness close to diamond, resistance to extreme high heat,
Titanium nitride fusing point is high, density is relatively low, thermal-shock resistance good, and Kaolin has excellent cementability and provides SiO2, these materials
Comprehensive function make the advantage that the finished product prepared both had traditional ceramic material: density is low, high rigidity, high temperature resistant, corrosion-resistant,
Operating power consumption is low, material consumption is low, adhesion is good, jolt capacity is strong, shock resistance Ulva Pertusa, the cement fineness of production and later strength high
Deng, the material such as nano boron carbide, titanium nitride, titanium carbide, ramet is under kaolinic adhesive effect simultaneously, has more excellent
Antidetonation, wear-resisting, shock resistance.Shape can use the cylinder of the conventional corner rounding of industry, it is possible to uses goalpost coalition
Or laterally zygomorphic positive truncated rectangular pyramids, there is no stress concentration point, be difficult to be crashed, the life-span is longer.
Meanwhile, compared with the prior art, the preparation method of ceramic grinding section of the cement mill in the present invention, owing to adopting
With preliminary grinding, fine grinding, the ball milling of mix grinding three process and step-sizing, make slurry fineness uniformity；Carry out iron removal step, energy
Effectively remove the impurity in slurry, improve ceramic degree of purity；Because aluminium oxide ceramics powder belongs to non-plastic raw material, in order to suppress
The needs of molding, need add bonding agent, as the Kaolin in formula and in mist projection granulating add PVA solution, addition disappears
Infusion is to suppress foam to produce, and improves production capacity, reduces production cost；The old operation of feed bin can effectively remove pelletizing
In moisture；Profile procoess operation makes powder molding, and dry-pressing formed blank moisture is few, pressure is big, base substrate is fine and close, therefore can obtain
Must shrink little, shape accurately, be prone to dry green compact；High temperature sintering operation is sprinkled into parting sand, can effectively prevent product adhesion,
Burnt product is made to can be easily separated with high temperature sagger；Clear powder polishing process removes parting sand and the burr adhered in sintering process,
Make product bright and clean；Last drying process makes product be fully achieved index of dispatching from the factory.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of several typical structures of the present invention.
In figure: symmetrical above and below and the positive truncated rectangular pyramids 1 of edge rounding, the cylinder 2 of edge rounding, goalpost coalition 3.
Detailed description of the invention
Embodiment 1:
This cement mill with ceramic grinding section contain by weight percentage aluminium oxide 92%, silicon nitride 0.5%, Kaolin 1%,
Titanium carbide 2%, nano boron carbide 1.5%, titanium nitride 1%, ramet 2%, adopt and prepare with the following method:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=8:100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing that takes of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and (preliminary grinding ballstone can to add ballstone and water
Use the 92-high alumina isostatic pressed ball of Φ 30-Φ 50mm, lower same), ratio is material: ball: water=1:2.5:0.7, to slurry fineness D90
≤ 8 microns are stopped mill, cross 40 mesh sieves and go out mill；
(b2) fine grinding: the slurry that step (b1) obtained adds fine grinding milling apparatus, and (fine grinding ballstone can be adopted to add ballstone and water
With the 92-high alumina isostatic pressed ball of Φ 15-Φ 25mm, lower with), ratio is material: ball: water=1:2:0.7, to slurry fineness D50≤
1.5 microns, stop mill behind D90≤3.2 micron；
(b3) mix grinding: is added in the slurry that step (b2) is obtained the PVA solution 9% of configuration, mix grinding by weight in step (a)
1h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a), and squeezes into height
Position slurry tank, controls the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, selects suitably spraying spray sheet diameter, sprays
Mist pelletize, pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
E () Profile procoess: powder step (d) obtained becomes base by mould die mould, is shaped as the cylinder of corner rounding, cut
Face is preferably dimensioned to be 10mm × 10mm, 15mm × 15mm, 20mm × 20mm, the one in 25mm × 25mm；Forming powders moisture content
Control below 0.5%；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles 40 whitish eye corundum parting sands, send into tunnel
In kiln, temperature 1550 DEG C, firing period 24h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
Embodiment 2:
This cement mill ceramic grinding section contains aluminium oxide 95%, silicon nitride 0.5%, Kaolin by weight percentage
0.8%, titanium carbide 0.6%, nano boron carbide 2%, titanium nitride 0.8%, ramet 0.3%, adopts and prepares with the following method:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=7:100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:0.75, stops mill to slurry fineness D90≤8 micron, crosses 40 mesh sieves and goes out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:3:0.75, stops mill to slurry fineness D50≤1.5 micron, D90≤3.2 micron；
(b3) mix grinding: is added in the slurry that step (b2) is obtained the PVA solution 12% of configuration, mix grinding by weight in step (a)
0.5h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a) and appropriate
Defoamer, and squeeze into high-order slurry tank, control the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, select suitably spraying
Spray sheet diameter, carries out mist projection granulating, and pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
E () Profile procoess: powder step (d) obtained becomes base by mould die mould, is shaped as goalpost coalition, middle for circle
Post, two is the most spherical；Forming powders moisture control is below 0.5%；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles 60 whitish eye corundum parting sands, send into shuttle-type
In kiln, temperature 1450 DEG C, firing period 36h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
Embodiment 3:
This cement mill ceramic grinding section contains aluminium oxide 92%, silicon nitride 2%, Kaolin 3%, carbon by weight percentage
Change titanium 0.2%, nano boron carbide 1.5%, titanium nitride 0.8%, ramet 0.5%, adopt and prepare with the following method:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=10:100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:0.72, stops mill to slurry fineness D90≤8 micron, crosses 40 mesh sieves and goes out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:2.5:0.75, stops mill to slurry fineness D50≤1.5 micron, D90≤3.2 micron；
(b3) mix grinding: is added in the slurry that step (b2) is obtained the PVA solution 9% of configuration, mix grinding by weight in step (a)
0.5h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a) and appropriate
Defoamer, and squeeze into high-order slurry tank, control the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, select suitably spraying
Spray sheet diameter, carries out mist projection granulating, and pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
(e) Profile procoess: powder step (d) obtained becomes base by mould die mould, forming powders moisture control 0.5% with
Under；It is shaped as intermediate cross-section and amasss positive truncated rectangular pyramids maximum, laterally zygomorphic, edge rounding；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles 80 whitish eye corundum parting sands, send into tunnel
In kiln, temperature 1350 DEG C, firing period 30h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
Embodiment 4:
This cement mill with ceramic grinding section contain by weight percentage aluminium oxide 93%, silicon nitride 1.2%, Kaolin 2%,
Titanium carbide 1%, nano boron carbide 1.6%, titanium nitride 0.9%, ramet 0.3%, adopt and prepare with the following method:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=9:100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:0.7, stops mill to slurry fineness D90≤8 micron, crosses 40 mesh sieves and goes out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:2:0.7, stops mill to slurry fineness D50≤1.5 micron, D90≤3.2 micron；
(b3) mix grinding: is added in the slurry that step (b2) is obtained the PVA solution 11% of configuration, mix grinding by weight in step (a)
0.7h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a) and appropriate
Defoamer, and squeeze into high-order slurry tank, control the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, select suitably spraying
Spray sheet diameter, carries out mist projection granulating, and pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
E () Profile procoess: powder step (d) obtained becomes base by mould die mould, is shaped as goalpost coalition, middle for circle
Post, two is the most spherical；Forming powders moisture control is below 0.5%；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles 60 whitish eye corundum parting sands, send into shuttle-type
In kiln, temperature 1700 DEG C, firing period 30h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
Embodiment 5:
This cement mill ceramic grinding section contains aluminium oxide 94%, silicon nitride 0.6%, Kaolin by weight percentage
1.1%, titanium carbide 0.5%, nano boron carbide 1.8%, titanium nitride 1%, ramet 1%, adopts and prepares with the following method:
(a) dispensing: take all the components by weight percentage；Configuring PVA solution, proportioning is PVA: water=8:100 simultaneously；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:0.75, stops mill to slurry fineness D90≤8 micron, crosses 40 mesh sieves and goes out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:2.5:0.75, stops mill to slurry fineness D50≤1.5 micron, D90≤3.2 micron；
(b3) mix grinding: is added in the slurry that step (b2) is obtained the PVA solution 12% of configuration, mix grinding by weight in step (a)
0.6h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a) and appropriate
Defoamer, and squeeze into high-order slurry tank, control the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, select suitably spraying
Spray sheet diameter, carries out mist projection granulating, and pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
(e) Profile procoess: powder step (d) obtained becomes base by mould die mould, forming powders moisture control 0.5% with
Under；It is shaped as intermediate cross-section and amasss positive truncated rectangular pyramids maximum, laterally zygomorphic, edge rounding；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles 40 whitish eye corundum parting sands, send into shuttle-type
In kiln, temperature 1550 DEG C, firing period 34h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
Described above to the disclosed embodiments, only for making professional and technical personnel in the field be capable of or using this
Invention.Multiple amendment to these embodiments will be apparent from for those skilled in the art, herein institute
The General Principle of definition can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore,
The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The widest scope that point is consistent.
Claims (10)
1. a cement mill ceramic grinding section, it is characterised in that: its contain by weight percentage aluminium oxide 92-95%,
Silicon nitride 0.5-2%, Kaolin 0.8-3%, titanium carbide 0.2-2%, nano boron carbide 1.5-2%, titanium nitride 0.8-1%, ramet
0.3-2%。
A kind of cement mill ceramic grinding section the most according to claim 1, it is characterised in that: it is shaped as middle cutting
Area positive truncated rectangular pyramids maximum, laterally zygomorphic, edge rounding.
A kind of cement mill ceramic grinding section the most according to claim 1, it is characterised in that: it is shaped as cylinder
Body, edge rounding, sectional dimension is preferably 10mm × 10mm, 15mm × 15mm, 20mm × 20mm, in 25mm × 25mm
Kind.
A kind of cement mill ceramic grinding section the most according to claim 1, it is characterised in that: it is shaped as goalpost knot
Zoarium, centre is cylinder, and two is the most spherical.
5., according to the preparation method of a kind of cement mill ceramic grinding section described in any of the above-described claim, its feature exists
In, comprise the following steps:
A () dispensing: take all the components by weight percentage, is mixed and stirred for uniformly, preparing mixed material；Configure PVA simultaneously
Solution, proportioning is PVA: water=(7-10): 100；
(b) ball milling:
(b1) preliminary grinding: the dispensing taken of step (a) being fallen into a trap adds preliminary grinding milling apparatus, and adds ballstone and water, ratio is material:
Ball: water=1:2.5:(0.7-0.75), stop mill to slurry fineness D90≤8 micron, cross 40 mesh sieves and go out mill；
(b2) fine grinding: slurry step (b1) obtained adds fine grinding milling apparatus, and adds ballstone and water, ratio is material: ball:
Water=1:(2-3): (0.7-0.75), to slurry fineness D50≤1.5 micron, D90≤3.2 micron, stop mill；
(b3) mix grinding: is added in the slurry that step (b2) is obtained PVA solution 9-12% of configuration by weight in step (a), mixed
Mill 0.5-1h, crosses 150 mesh sieves and goes out mill, and carry out except ferrum；
(c) mist projection granulating: is added in the slurry that step (b3) is obtained the PVA solution of configuration in appropriate step (a), and squeezes into height
Position slurry tank, controls the hot blast temperature of spray drying tower, leaving air temp and pressure reduction, selects suitably spraying spray sheet diameter, sprays
Mist pelletize, pelletizing crosses 20 mesh sieves；
D () feed bin is old: pelletizing step (c) obtained carries out old, and the old time is no less than 48h；
(e) Profile procoess: powder step (d) obtained becomes base by mould die mould, forming powders moisture control 0.5% with
Under；
F () high temperature sintering: high temperature sagger put into by green compact step (e) obtained, sprinkles parting sand, send in high temperature kiln, temperature
1350-1700 DEG C, firing period 24-36h；
(g) clear powder polishing: parting sand and the burr of product adhesion in sintering process are removed；
H () finished product is dried: be dried product, obtains finished product.
The preparation method of a kind of cement mill ceramic grinding section the most according to claim 5, it is characterised in that step
C () adds PVA solution while, it is additionally added appropriate defoamer.
The preparation method of a kind of cement mill ceramic grinding section the most according to claim 6, it is characterised in that step
E () becomes the powder particles size of base to control as 30-80 mesh for die mould.
The preparation method of a kind of cement mill ceramic grinding section the most according to claim 7, it is characterised in that step
F parting sand described in () is the white fused alumina of below 40 mesh.
9., according to the preparation method of a kind of cement mill ceramic grinding section described in claim 6 or 7 or 8, its feature exists
In, high temperature kiln described in step (f) is tunnel cave, and temperature is 1350-1550 DEG C, and firing period is 24-30h.
10., according to the preparation method of a kind of cement mill ceramic grinding section described in claim 6 or 7 or 8, its feature exists
In, high temperature kiln described in step (f) is shuttle kiln, and temperature is 1450-1700 DEG C, and firing period is 30-36h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110590340A (en) * | 2019-10-29 | 2019-12-20 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
| CN112041084A (en) * | 2018-04-23 | 2020-12-04 | 萨克萨格雷斯通股份有限公司 | Ceramic stoneware product |
| CN115466105A (en) * | 2022-11-14 | 2022-12-13 | 北京利尔高温材料股份有限公司 | Blast furnace iron tap channel main channel castable and preparation method thereof |
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| CN101565316A (en) * | 2009-06-03 | 2009-10-28 | 重庆罗曼科技有限公司 | Preparation method of high-temperature abrasion proof ceramic wafer |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
| CN104926291A (en) * | 2015-06-02 | 2015-09-23 | 东营市鑫博陶瓷科技有限公司 | Preparation method of special grinding body for dry powder grinding mill |
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| CN1261093A (en) * | 1999-01-15 | 2000-07-26 | 李霞 | Grinding body of brown corundum and preparing process thereof |
| CN101565316A (en) * | 2009-06-03 | 2009-10-28 | 重庆罗曼科技有限公司 | Preparation method of high-temperature abrasion proof ceramic wafer |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112041084A (en) * | 2018-04-23 | 2020-12-04 | 萨克萨格雷斯通股份有限公司 | Ceramic stoneware product |
| CN112041084B (en) * | 2018-04-23 | 2022-06-03 | 萨克萨格雷斯通股份有限公司 | Ceramic stoneware product |
| CN110590340A (en) * | 2019-10-29 | 2019-12-20 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
| CN110590340B (en) * | 2019-10-29 | 2022-04-01 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
| CN115466105A (en) * | 2022-11-14 | 2022-12-13 | 北京利尔高温材料股份有限公司 | Blast furnace iron tap channel main channel castable and preparation method thereof |
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