CN108249897A - A kind of method that red mud prepares cement mill ball - Google Patents
A kind of method that red mud prepares cement mill ball Download PDFInfo
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- CN108249897A CN108249897A CN201810007570.1A CN201810007570A CN108249897A CN 108249897 A CN108249897 A CN 108249897A CN 201810007570 A CN201810007570 A CN 201810007570A CN 108249897 A CN108249897 A CN 108249897A
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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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- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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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
- C04B35/622—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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- 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
- C04B35/622—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
- C04B35/62695—Granulation or pelletising
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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
- C04B35/622—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
- C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method that red mud prepares cement mill ball, raw material is by weight ratio：62 75% aluminium oxide, 25 38% red muds.Preparation method is：（1）Batch mixing, wet grinding, mist projection granulating；（2）Rolling is molded；（3）Body drying；（4）Easy fired.Preparation method proposed by the present invention, using red mud and small former brilliant high temperature alumina, raw material is commonly easy to get, cheap, and preparation product operation is simple, and mild condition is conducive to recovery and reuse of waste and environmental protection for raw material；Ceramic Balls compact structure, intensity height by production method preparation, wearability are good.
Description
Technical field
The invention belongs to inorganic non-metallic materials（Ceramics）Field is related to a kind of method that red mud prepares cement mill ball.
Background technology
The main component of red mud is aragonite, calcite and opal, gibbsite, goethite etc..It is aluminium industry
The pollution waste residue discharged during aluminium oxide is extracted, average often produces 1 ton of aluminium oxide, incidentally generates 1.0~2.0 tons of red muds.
A large amount of red mud quickly cannot be utilized directly, and the stockyard of large area can only be relied on to stack, a large amount of soils are occupied, also to environment
Cause serious pollution.
In manufacture of cement, " two mills " process grinding machine ball loss accounts for the overwhelming majority of entire cement production process energy consumption.
Reduce the wear rate of the crucial mill ball in ball mill is reduced of " two mills " energy consumption.Under the conditions of current technology, cement mill
Mostly using steel ball as mill ball, and steel ball is of high cost, and abrasion are larger, and needs frequently to replace and add, and both increases
The operation cost of the enterprises such as cement, ore grinding, and reduce working efficiency.Ceramic Balls are due to good hardness, density, resistance to
Mill, corrosion-resistant and low-cost feature, therefore be considered as the optimal selection for replacing steel ball.But the preparation skill of Ceramic Balls
There are certain difficulty, difficult points to be for art：（1）The uniformity of green body entirety is difficult to control during molding；（2）Sintering process is fine and close
Change difficulty, stomata and defect and sintered even grain size are difficult to control.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of method that red mud prepares cement mill ball,
It is related to a kind of new ball thinking processed and ball making method, solves the problems, such as that the molding Ceramic Balls intensity of existing rolling is generally relatively low, carry
High intensity, the wearability of grinding machine ball.Preparation method of the present invention uses industrial solid castoff-red mud as raw material, cost-effective
Mitigate environmental protection pressure.
The technical solution adopted by the present invention is：
A kind of method that red mud prepares cement mill ball is to be by 62-75% aluminium oxide and 25-38% red muds of mass percentage
Raw material adds rolling balling-up after ammonium polyacrylate.
The ammonium polyacrylate, addition are aluminium oxide and the 1-2% of red mud gross mass.
The small former brilliant high temperature alumina that the aluminium oxide is 0.6-0.9 μm.
Further, the method that the red mud prepares cement mill ball, step include：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium with ball mill wet-milling, is then spray-dried, obtains spray powder；
Further, step（1）In, ball mill wet-milling to laser particle size analyzer detection Slurry Granularity is D50 0.6-0.9 μm,
D90 1.0-1.8μm。
Further, step（1）In, the spray drying, the solid content of slurry is 55-65% when spray drying tower works, import
Temperature is 250 DEG C, and outlet temperature is 80-95 DEG C.
（2）Rolling is molded：The spray powder of gross mass 3-5% is sieved, takes the spray powder after the sieving of 180-200 mesh as kind
Son, the spray powder stick pin crusher in crushing to 200 of spray powder and residue 95-97% after sieving except 180-200 mesh range
Mesh is hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, rolling balling-up is made
Green compact ball；
Further, step（2）In, it is smashed twice with stick pin crusher, then crosses 200 mesh sieve.
（3）Body drying：Green compact ball air-dries dry or drying of drying in the shade with residual heat from kiln furnace；
Further, step（3）In, drying to moisture is down to less than 0.5%；
Further, step（3）In, the drying, temperature is 25-40 DEG C, time 26-34h.
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1320-1380 DEG C of klining 24-36h, obtains
Cement mill ball.
Compared with prior art, advantageous effect of the present invention：Red mud waste material is recycled, reduces pollution of the red mud to environment,
And by technical measure, ensure that the even structure of green compact ball is fine and close, effectively improve the intensity of green body, and eliminate common rolling
The problem of ball center's intensity processed is low.Using small former crystal alumina as raw material, the mill ball crystal grain for making firing is tiny, microstructure
Uniformly；So as to greatly improve the mechanical performances such as its wearability, shock resistance.
Description of the drawings
Fig. 1 is the appearance picture of 5 cement mill ball of embodiment.
Specific embodiment
By describing the present invention in conjunction with specific embodiments, without departing from the idea case in the present invention described above, according to this
The various replacements or change that field ordinary technical knowledge and customary means are made, are included within the scope of the present invention.
Embodiment 1：
A kind of method that red mud prepares cement mill ball is using mass percentage as 75%0.6-0.9 μm of small former brilliant high temperature oxygen
It is raw material to change aluminium powder and 25% red mud, and ammonium polyacrylate addition is the 1.2% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detection Slurry Granularity is 0.9 μm of D50,1.8 μm of D90.
Then it is spray-dried, the solid content of slurry is 65% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 88 DEG C, is obtained
Spray powder；
（2）Rolling is molded：The spray powder of gross mass 4% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 96% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：Green compact ball air-dries dry, 25-40 DEG C of dry 34h, until moisture is down to less than 0.5% with residual heat from kiln furnace；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1310 DEG C of klining 36h, obtains cement mill ball.
Embodiment 2：
A kind of method that red mud prepares cement mill ball is using mass percentage as 73% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder aluminium oxide and 27% red mud are raw material, and ammonium polyacrylate addition is the 1.3% of aluminium oxide and red mud gross mass；Step
For：
Preparation method, step are：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detection Slurry Granularity is 0.8 μm of D50,1.6 μm of D90.
Then it is spray-dried, the solid content of slurry is 62% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 90 DEG C, is obtained
Spray powder；
（2）Rolling is molded：The spray powder of gross mass 5% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 95% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：Green compact ball dries in the shade drying, 25-40 DEG C of dry 34h, until moisture is down to less than 0.5%；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1320 DEG C of klining 34h, obtains cement mill ball.
Embodiment 3：
A kind of method that red mud prepares cement mill ball is using mass percentage as 71% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder and 29% red mud are raw material, and ammonium polyacrylate addition is the 1.2% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detection Slurry Granularity is 0.9 μm of D50,1.8 μm of D90.
Then it is spray-dried, the solid content of slurry is 60% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 92 DEG C, is obtained
Spray powder；
（2）Rolling is molded：The spray powder of gross mass 3% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 97% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：Green compact ball air-dries dry, 25-40 DEG C of dry 26h, until moisture is down to less than 0.5% with residual heat from kiln furnace；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1330 DEG C of klining 32h, obtains cement mill ball.
Embodiment 4：
A kind of method that red mud prepares cement mill ball is using mass percentage as 69% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder and 31% red mud are raw material, and ammonium polyacrylate addition is the 1.5% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detection Slurry Granularity is 0.8 μm of D50,1.8 μm of D90.
Then it is spray-dried, the solid content of slurry is 58% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 91 DEG C, is obtained
Spray powder；
（2）Rolling is molded：The spray powder of gross mass 3% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 97% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：Green compact ball dries in the shade drying, 25-40 DEG C of dry 26h, until moisture is down to less than 0.5%；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1340 DEG C of klining 30h, obtains cement mill ball.
Embodiment 5：
A kind of method that red mud prepares cement mill ball is using mass percentage as 67% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder and 33% red mud are raw material, and ammonium polyacrylate addition is the 1.1% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detects Slurry Granularity as 0.9 μm of D50,1.8 μm of D90,
Then it is spray-dried, the solid content of slurry is 57% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 93 DEG C, is obtained
Spray powder；
（2）Rolling is molded：By gross mass, 5% spray powder sieving takes the spray powder after the sieving of 180-200 mesh as seed, mistake
Spray powder after sieve less than the spray powder of 180 mesh and residue 95% with stick pin crusher in crushing be screened to 200 mesh twice hereinafter,
Then it is mixed with being more than the spray powder of 200 mesh after sieving as powder；It adds in seed into bowling machine, after water spray, adds in powder,
Powder wraps up seed, and green compact ball is made in rolling balling-up；
（3）Body drying：Green compact ball air-dries dry, 25-40 DEG C of dry 30h, until moisture is down to less than 0.5% with residual heat from kiln furnace；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1350 DEG C of klining 28h, obtains cement mill ball
（See Fig. 1）.
Embodiment 6：
A kind of method that red mud prepares cement mill ball is using mass percentage as 65% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder and 35% red mud are raw material, and ammonium polyacrylate addition is the 1.4% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detects Slurry Granularity as 0.7 μm of D50,1.4 μm of D90,
Then it being spray-dried, the solid content of slurry is 55-65% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 90 DEG C,
Obtain spray powder；
（2）Rolling is molded：The spray powder of gross mass 5% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 95% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：Green compact ball air-dries dry, 25-40 DEG C of dry 26h, until moisture is down to less than 0.5% with residual heat from kiln furnace；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1360 DEG C of klining 26h, obtains cement mill ball.
Embodiment 7：
A kind of method that red mud prepares cement mill ball is using mass percentage as 62% 0.6-0.9 μm of small former brilliant high temperature
Alumina powder and 38% red mud are raw material, and ammonium polyacrylate addition is the 1.2% of aluminium oxide and red mud gross mass；Step is：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium, with ball mill wet-milling, ball mill wet-milling to laser particle size analyzer detects Slurry Granularity as 0.9 μm of D50,1.7 μm of D90,
Then it is spray-dried, the solid content of slurry is 55% when spray drying tower works, and inlet temperature is 250 DEG C, and outlet temperature is 90 DEG C.
Spray powder；
（2）Rolling is molded：The spray powder of gross mass 5% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, sieving
The spray powder except 180-200 mesh range and the spray powder of residue 95% are screened to 200 mesh twice with stick pin crusher in crushing afterwards
Hereinafter, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, life is made in rolling balling-up
Base ball；
（3）Body drying：The drying of drying in the shade of green compact ball, 25-40 DEG C of dry 34h, until moisture is down to less than 0.5%；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1370 DEG C of klining for 24 hours, obtains cement mill ball.
The present invention is made comparison by performance in order to further illustrate the present invention with existing ball mill with wear-resistant ball, as follows
Table 1：
Table 1
Wear test method：
Take 1.8-2.0mm balls, 1000g or so, drying to constant weight at 110 DEG C.It is placed in drier and is cooled to room temperature, with analysis day
It is flat to weigh, it is denoted as M1；Add 500ml distilled water, rotating speed 500rpm, milling time 1h；Bead, 110 DEG C of bakings are cleaned in grinding after stopping
It does to constant weight, room temperature is then cooled in drier, weigh, be denoted as M2。
Wearing away calculation formula is：（M1-M2）/M1*100%。
Claims (9)
1. a kind of method that red mud prepares cement mill ball, it is characterised in that：It is using mass percentage as 62-75% aluminium oxide
It is raw material with 25-38% red muds, adds rolling balling-up after ammonium polyacrylate.
2. according to the method described in claim 1, it is characterized in that：The ammonium polyacrylate, addition are aluminium oxide and red mud
The 1-2% of gross mass.
3. according to the method described in claim 1, it is characterized in that：The small former brilliant high temperature oxygen that the aluminium oxide is 0.6-0.9 μm
Change aluminium.
4. according to the method described in claim 1, it is characterized in that, step includes：
（1）Batch mixing, wet grinding, mist projection granulating：Aluminium oxide and red mud are taken by proportioning, distilled water and polyacrylic acid are added in after mixing
Ammonium with ball mill wet-milling, is then spray-dried, obtains spray powder；
（2）Rolling is molded：The spray powder of gross mass 3-5% is sieved, takes the spray powder after the sieving of 180-200 mesh as seed, mistake
The spray powder of spray powder after sieve except 180-200 mesh range and residue 95-97% with stick pin crusher in crushing to 200 mesh with
Under, as powder；It adds in seed into bowling machine, after water spray, adds in powder, powder package seed, green compact are made in rolling balling-up
Ball；
（3）Body drying：Green compact ball air-dries dry or drying of drying in the shade with residual heat from kiln furnace；
（4）Easy fired：Dried green body, which is put into saggar, is pushed into kiln, in 1320-1380 DEG C of klining 24-36h, obtains cement
Grinding machine ball.
5. according to the method described in claim 4, it is characterized in that：Step（1）In, ball mill wet-milling to laser particle size analysis
Instrument detection Slurry Granularity is D50 0.6-0.9 μm, D90 1.0-1.8 μm.
6. according to the method described in claim 4, it is characterized in that：Step（1）In, the spray drying, when spray drying tower works
The solid content of slurry is 55-65%, and inlet temperature is 250 DEG C, and outlet temperature is 80-95 DEG C.
7. according to the method described in claim 4, it is characterized in that：Step（2）In, it is smashed twice with stick pin crusher, so
200 mesh sieve is crossed afterwards.
8. according to the method described in claim 4, it is characterized in that：Step（3）In, drying to moisture is down to less than 0.5%.
9. according to the method described in claim 4, it is characterized in that：Step（3）In, the drying, temperature is 25-40 DEG C,
Time is 26-34h.
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- 2018-01-04 CN CN201810007570.1A patent/CN108249897B/en active Active
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| CN101475365A (en) * | 2009-01-13 | 2009-07-08 | 宜兴市科力耐火材料有限公司 | Ceramic ball for cokeless furnace cupola and preparation thereof |
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| CN103360105A (en) * | 2013-07-15 | 2013-10-23 | 北京工业大学 | Preparation method of coal gangue-red mud lightweight pottery sand with core-shell structure |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
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