CN106396643A - Method for recycling and reusing aluminum oxide ceramic waste - Google Patents
Method for recycling and reusing aluminum oxide ceramic waste Download PDFInfo
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- CN106396643A CN106396643A CN201610823263.1A CN201610823263A CN106396643A CN 106396643 A CN106396643 A CN 106396643A CN 201610823263 A CN201610823263 A CN 201610823263A CN 106396643 A CN106396643 A CN 106396643A
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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
- C04B35/01—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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- 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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- 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
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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
- C04B35/62615—High energy or reactive ball milling
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- 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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- 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
Abstract
The invention discloses a method for recycling and reusing aluminum oxide ceramic waste. The method comprises the following steps: 1), recycling, cleaning, classifying and crushing the ceramic waste; 2), conducting physical and chemical testing and modified treatment on the ceramic waste: quantificationally sampling different batches of crushed ceramic waste powder in proportion, mixing samples of the same batch of ceramic waste powder, performing physical and chemical testing analysis, adding a modifier with the weight being 6 to 8 percent w/w of that of the ceramic waste powder according to a test result, and adding the same amount of a modifier into different batches of ceramic waste powder; performing mixing and secondary ball milling for 24h or above; 3), sieving the ceramic waste powder, and taking the ceramic waste powder as a standby raw material required for forming ceramic products. The aluminum oxide ceramic waste treated through the method is good in physical and chemical properties, can serve as a material for manufacturing new aluminum oxide ceramic, is low in sintering temperature when being used for processing new aluminum oxide ceramic products, shortens the processing period, ensures that the products are high in volume density, and is low in processing cost.
Description
Technical field
The present invention relates to a kind of shraff recovery method, especially relate to a kind of aluminium oxide ceramics scrap concrete sharp again
Method.
Background technology
Aluminium oxide ceramics, as most widely used a kind of material in advanced ceramics, inevitably occurs one in production process
Quantitative scrap products, due to carrying out large-scale production, its production quantity is big, and correspondingly rejection number is more, total after directly scrapping
It is worth also higher；The production discarded object of aluminium oxide ceramics is mainly used in the recycling of refractory material producer, utilization rate at present
Low, and added value is low.
CN 102153362 A discloses a kind of method for reclaiming aluminum oxide foamed ceramic wastes, and its step first will be scrapped
Alumina Foam Ceramics product ball mill grinding, to micron order powdery, is then pressed proportioning and is weighed；Wherein waste material 10% ~ 20%, a- aoxidizes
Aluminium 50% ~ 60%, water-washed kaoline 7% ~ 15%, calcined kaolin 7% ~ 15%, silicon powder 1% ~ 8%, potassium feldspar 5% ~ 10%；Press again and add
Measure for stock quality percentage 22% ~ 32% ratio add phosphate dihydrogen aluminum solution, make slurry；Then slurry is made uniformly to divide
It is dispersed on foam volume grid, make base substrate；Again base substrate is dried and sinter, that is, obtain new Alumina Foam Ceramics filter.
This recovery method complex operation, and the poor-performing of the Alumina Foam Ceramics of its recovery.
CN 103693998 A discloses a kind of recovery method of metallized ceramic waste product, comprises the following steps that：Work
Industry is alcohol-pickled, clear water immersion, ultrasonic wave cleaning, soda boiling, salt acid soak, drying and two-step sintering operation.This recovery method master
Reclaim after coating metallised paint, ceramic waste product when before sintering, it is not suitable for returning of the ceramic waste product after high temperature sintering
Receive and utilize.
CN 1517191A discloses and has been obtained, using the waste material producing in cordierite ceramic preparation, the pottery reclaiming
Porcelain raw material, described waste material is produced unnecessary portion in the cutting step being cut to predetermine sizes dry ceramic moulded goods
Point, or the defective dry ceramic moulded goods producing in the drying steps of ceramic material of extrusion are dried, by waste powder
Broken；By at least remove described by pulverizing the particle less than preliminary dimension in the powder obtaining, be obtained by preliminary dimension
The recovery powder of grain composition.Gained is reclaimed the ceramic raw material that powder is used as to reclaim.This shraff recovery method is used for aoxidizing
When aluminium shraff reclaims, its rate of recovery is low, and the electric property of the aluminium oxide ceramics that recycling makes is poor.
Content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, a kind of easy and simple to handle, recycling is provided
The method that rate is high, recycle the good aluminium oxide ceramics scrap concrete recycling of the Alumina Ceramics making.
The technical solution adopted for the present invention to solve the technical problems is：A kind of aluminium oxide ceramics scrap concrete recycles
Method, comprise the following steps：
1）Reclaim cleaning, classification, pulverization process pottery discarded object：Aluminium oxide ceramics scrap concrete is cleared up and divides by color
Class, then, puts into ball mill grinding in tumbling ball mill in batches；
2）The Physico-chemical tests of ceramic discarded object and modification：Ceramic discarded object powder after different batches are pulverized in proportion
Quantitative sampling, carries out Physico-chemical tests analysis again by after the sample mix of same batch pottery discarded object powder, according to testing result, presses
6 ~ 8%w/w of ceramic discarded object powder weight adds modifying agent, the interpolation of modifying agent in the ceramic discarded object powder of different batches
Amount is identical；And carry out more than secondary ball milling 24h after adding sintering aid mixing；
3）The ceramic discarded object powder of screening：With the sieve of 60 ~ 100 mesh by step 2）Ceramic discarded object powder after ball-milling treatment enters
Row screening, standby as ceramic shaping needed raw material.
Further improvement of the present invention scheme, the method that described aluminium oxide ceramics scrap concrete recycles, also include, profit
Prepare aluminium oxide ceramic products with discarded object powder, its concrete operations is：
4）The making of ceramic body：By Chinese wax and beeswax in mass ratio 8 ~ 10:1（I.e. the weight of Chinese wax is ceramic discarded object powder
11.25%, the weight of beeswax is the 1.25% of ceramic discarded object powder）Carry out mixing to melt, add step 3）The pottery of screening
Porcelain discarded object powder, stirring mixes to ceramic discarded object powder surface no dry particl, after putting into cooling in aluminium dish, further takes out and makes
Wax stone；Wax stone is placed to break into pieces again after a period of time and puts into the thawing of melt agitator, after stirring 8 hours, put into hot injection moulding machine,
Make different aluminium oxide ceramics base substrates by different moulds；
5）The sintering of aluminium oxide ceramics base substrate：By aluminium oxide ceramics base substrate with ceramic discarded object powder encapsulation, vibrate closely, put into
Fire more than 24h for 1200 DEG C in moderate oven kiln, remove the organic matter in ceramic powders, take out and clean out base substrate, place into
Sinter and be incubated 2 ~ 4h in 1600 DEG C in high temperature sagger, after cooling, obtain aluminium oxide ceramic products.
Further, step 2）In, described modifying agent is that nanoscale calcined kaolin, nanometer grade silica and nanoscale are forged
Burn talcous mixture, the quality of described nanoscale calcined kaolin, nanometer grade silica and nanoscale calcinated talc powder
Than for 1.5 ~ 2:1~1.35:1, preferably：The matter of nanoscale calcined kaolin, nanometer grade silica and nanoscale calcinated talc powder
Amount ratio is 1.75:1.17:1, i.e. three is respectively 3.15%, 2.1%, 1.8% with the mass ratio of discarded object ceramic powder.
Further, step 2）In, during secondary ball milling, ceramic discarded object powder and sintering aid（As MgO-Al2O3-SiO2,
Potassium feldspar, please supplement several conventional sintering aids）It is 100 in mass ratio:5 ~ 8 mixing, add while adding sintering aid
Enter the 0.4 ~ 0.6% of ceramic discarded object powder weight vegetable oil acid, as grinding aid and surfactant.
Further, step 2）In, during secondary ball milling, the mass ratio of ceramic discarded object powder and alumina lap spheroid is 1:
1.2 ~ 1.5 it is preferable that mass ratio is 1:1.5.
Further, described aluminium oxide ceramics discarded object is alumina content >=90%（w/w）Aluminium oxide ceramics discarded object.
The present invention be under existing Production Technique of Alumina Ceramics it is achieved that a kind of to existing production process in produce
The processing recycling and being applied to new aluminium oxide ceramic products of aluminium oxide ceramics discarded object, its recovery method is using pottery
The characteristic of discarded object itself, and using nanoscale calcined kaolin, nanometer grade silica and the mixing of nanoscale calcinated talc powder
Modifying agent, aluminium oxide ceramics discarded object is modified process, improves and be subsequently used for new aluminium oxide ceramic products and add
Condition of molding in work, and then improve its performance such as electric, mechanical, and reduce sintering temperature it is ensured that on the premise of ceramic performance
Reduce processing cost, and reduce the discharge of discarded object.
Because aluminium oxide ceramics discarded object is to process through high temperature sintering, high mechanical properties, but poor impact toughness, structure phase
To single, by the way of ball mill grinding, it is allowed to form good granular-grade ratio, and then there is excellent mobility, after being easy to
Continuous blank forming.In aluminium oxide ceramics discarded object, alkali metal content is extremely low, stable components, is conducive to reusing double sintering
When size be precisely controlled the lifting with insulating properties.
Modifying agent can fill interstitial void in sintering, forms low melting point oxide；Low melting point oxide is in sintering
The liquid phase being formed, has very strong penetrating power, and generates the stabilization of solid of the nano-scale of nascent state in sintering process
Particle, has good activity, distributing homogeneity, the growth of crystal grain when its dispersivity efficiently hinders double sintering.Modifying agent
The liquid phase being formed in sintering stage, reduces the sintering activation energy of aluminium oxide ceramics discarded object powder in larger degree, thus
In acceleration of sintering, the transmission of material and product is densified, and then improves the bulk density of product, reduces the sintering temperature of product
Degree.
Nanoscale calcined kaolin in the modifying agent of the present invention, can meet the requirement of composition and size performance, and having can
To reduce contraction in sintering process for the aluminium oxide ceramics discarded object, and then it is prevented effectively from product and the defect such as cracks；Nanometer
Grade silicon dioxide is combined with alumina high temperature liquid phase, generates mullite crystalline phase, thus improving product elevated temperature strength；Nanoscale is forged
Burn the growth that talcum powder can efficiently suppress aluminium oxide ceramics discarded object powder alumina grain in sintering process, be that pottery is brilliant
Grain fine uniform, compact structure is it is ensured that pottery has higher performance and fineness, and effectively can improve life by shortening forming time
Force of labor.
The beneficial effect of the method that a kind of present invention aluminium oxide ceramics scrap concrete recycles：
1）After aluminium oxide ceramics discarded object is processed by the inventive method, its size of microcrystal is 3 ~ 5 μm, its thermal conductivity >=21.9W/
（m·K）, surface roughness be 0.3 ~ 0.5 μm；And it is up to 100% as the utilization rate of new aluminium oxide ceramics making raw material, that is,
All using the aluminium oxide ceramics discarded object powder of recycling, new alumina powder need not be supplemented, for making new oxidation
Aluminium ceramic.
2）The modification being mixed using nanoscale calcined kaolin, nanometer grade silica and nanoscale calcinated talc powder
Agent, is modified to aluminium oxide ceramics discarded object processing, and improves the shaping being subsequently used in new aluminium oxide ceramic products processing
Condition, and then improve its performance such as electric, mechanical, and reduce sintering temperature and be processed into it is ensured that reducing on the premise of ceramic performance
This, and reduce the discharge of discarded object；
3）Aluminium oxide ceramics discarded object after being processed using the present invention, for being processed as new aluminium oxide ceramic products, its sintering
Temperature is low, shortens the process-cycle, and the bulk density of product is high, and processing cost is low.
Brief description
Fig. 1 is the process chart of a kind of method that aluminium oxide ceramics scrap concrete recycles in embodiment 1；
Fig. 2 is the process chart of a kind of method that aluminium oxide ceramics scrap concrete recycles in embodiment 2.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
With reference to Fig. 1, a kind of method of aluminium oxide ceramics scrap concrete recycling of the present embodiment, comprise the following steps：
1）Reclaim cleaning, classification, pulverization process pottery discarded object：The aluminium oxide ceramics discarded object that alumina content is 90% returns
Receipts are cleared up and by color classification, then, are put into ball mill grinding in tumbling ball mill in batches；
2）The Physico-chemical tests of ceramic discarded object and modification：Ceramic discarded object powder after different batches are pulverized in proportion
Quantitative sampling, carries out Physico-chemical tests analysis again by after the sample mix of same batch pottery discarded object powder, according to testing result, presses
The 7.05%w/w of ceramic discarded object powder weight adds modifying agent, and modifying agent is 1.75 for mass ratio:1.17:1 nanoscale is forged
Burn the mixture of kaolin, nanometer grade silica and nanoscale calcinated talc powder, i.e. nanoscale calcined kaolin, nanoscale
Silica and nanoscale calcinated talc powder are respectively 3.15%, 2.1%, 1.8% with the mass ratio of discarded object ceramic powder；Meanwhile, plus
Enter the 0.4% of ceramic discarded object powder weight vegetable oil acid, as grinding aid and surfactant；The waste ceramic of different batches
In gurry powder, the addition of modifying agent is identical；And carry out secondary ball milling 24h, wherein, waste ceramic after adding sintering aid mixing
The mass ratio of gurry powder and sintering aid is 100:6.25, sintering aid is MgO-Al2O3-SiO2, ceramic discarded object powder and
The mass ratio of alumina lap spheroid is 1:1.5；
3）The ceramic discarded object powder of screening：With the sieve of 60 mesh by step 2）Ceramic discarded object powder after ball-milling treatment is sieved
Point, standby as ceramic shaping needed raw material.
Embodiment 2
With reference to Fig. 2, a kind of method of aluminium oxide ceramics scrap concrete recycling of the present embodiment, comprise the following steps：
1）Reclaim cleaning, classification, pulverization process pottery discarded object：The aluminium oxide ceramics discarded object that alumina content is 92.5%
Recovery is cleared up and by color classification, then, is put into ball mill grinding in tumbling ball mill in batches；
2）The Physico-chemical tests of ceramic discarded object and modification：Ceramic discarded object powder after different batches are pulverized in proportion
Quantitative sampling, carries out Physico-chemical tests analysis again by after the sample mix of same batch pottery discarded object powder, according to testing result, presses
The 8.0%w/w of ceramic discarded object powder weight adds modifying agent, and modifying agent is 2 for mass ratio:1:1 nanoscale calcining kaolinite
The mixture of soil, nanometer grade silica and nanoscale calcinated talc powder, i.e. nanoscale calcined kaolin, nanoscale titanium dioxide
Silicon and nanoscale calcinated talc powder are respectively 4.0%, 2.0%, 2.0% with the mass ratio of discarded object ceramic powder；Meanwhile, add pottery
The vegetable oil acid of the 0.5% of discarded object powder weight, as grinding aid and surfactant；The ceramic discarded object powder of different batches
In end, the addition of modifying agent is identical；And carry out secondary ball milling 24h after adding sintering aid mixing, and wherein, ceramic discarded object powder
The mass ratio of end and sintering aid is 100:7.5, sintering aid is MgO-Al2O3-SiO2, ceramic discarded object powder and aluminum oxide
The mass ratio grinding spheroid is 1:1.2；
3）The ceramic discarded object powder of screening：With the sieve of 100 mesh by step 2）Ceramic discarded object powder after ball-milling treatment is carried out
Screening, standby as ceramic shaping needed raw material.
4）The making of ceramic body：By Chinese wax and beeswax in mass ratio 9:1（I.e. the weight of Chinese wax is ceramic discarded object powder
11.25%, the weight of beeswax is the 1.25% of ceramic discarded object powder）Carry out mixing to melt, add step 3）The pottery of screening
Porcelain discarded object powder, stirring mixes to ceramic discarded object powder surface no dry particl, after putting into cooling in aluminium dish, further takes out and makes
Wax stone；Wax stone is placed to break into pieces again after a period of time and puts into the thawing of melt agitator, after stirring 8 hours, put into hot injection moulding machine,
Make different aluminium oxide ceramics base substrates by different moulds；
5）The sintering of aluminium oxide ceramics base substrate：By aluminium oxide ceramics base substrate with ceramic discarded object powder encapsulation, vibrate closely, put into
In moderate oven kiln, it is to slowly warm up to 500 DEG C with the speed of 50 DEG C/h, then is rapidly heated to 1000 with the speed of 120 DEG C/h
DEG C, it is warming up to 1200 DEG C with the speed of 100 DEG C/h, and is incubated and fires 24h, remove the organic matter in ceramic powders, take out and clear
Manage clean base substrate；Place in high temperature sagger, 1600 DEG C, and sintered heat insulating 2h are warming up to the speed of 150 DEG C/h, after cooling
Obtain aluminium oxide ceramic products.
The method that a kind of present invention aluminium oxide ceramics scrap concrete recycles, step 2）In, can also be discarded by pottery
6.0%w/w, 6.5%w/w or 7.5%w/w of thing powder weight adds modifying agent；Described nanoscale calcined kaolin, nanoscale two
Silica and nanoscale calcinated talc powder are respectively 1.5 with the mass ratio of discarded object ceramic powder:1.2:1、1.9:1.35:1 or
1.6:1.1:1；The mass ratio of ceramic discarded object powder and sintering aid can also be 100:8 or 100:6, sintering aid is
MgO-Al2O3-SiO2, the mass ratio of ceramic discarded object powder and alumina lap spheroid can also be 1:1.35；Step 3）In,
The mesh number of sieve can also be 80 mesh；The change of above technical characteristic, those skilled in the art can be managed by word description
Solve and implement, therefore be no longer separately illustrated as accompanying drawing.
Claims (9)
1. a kind of method that aluminium oxide ceramics scrap concrete recycles is it is characterised in that comprise the following steps：
1）Reclaim cleaning, classification, pulverization process pottery discarded object：Aluminium oxide ceramics scrap concrete is cleared up and divides by color
Class, then, puts into ball mill grinding in tumbling ball mill in batches；
2）The Physico-chemical tests of ceramic discarded object and modification：Ceramic discarded object powder after different batches are pulverized in proportion
Quantitative sampling, carries out Physico-chemical tests analysis again by after the sample mix of same batch pottery discarded object powder, according to testing result, presses
6 ~ 8%w/w of ceramic discarded object powder weight adds modifying agent, the interpolation of modifying agent in the ceramic discarded object powder of different batches
Amount is identical；And carry out more than secondary ball milling 24h after adding sintering aid mixing；
3）The ceramic discarded object powder of screening：With sieve by step 2）Ceramic discarded object powder after ball-milling treatment is sieved, and makees
Standby for ceramic shaping needed raw material.
2. the method that aluminium oxide ceramics scrap concrete as claimed in claim 1 recycles is it is characterised in that the method is also wrapped
Include：Prepare aluminium oxide ceramic products using discarded object powder, its concrete operations is：
4）The making of ceramic body：By Chinese wax and beeswax in mass ratio 8 ~ 10:1 carries out mixing melts, and adds step 3）Screening
Ceramic discarded object powder, stirring mixes to ceramic discarded object powder surface no dry particl, after putting in aluminium dish cooling, further takes out
Make wax stone；Wax stone is placed to break into pieces again after a period of time and puts into the thawing of melt agitator, after stirring 8 hours, put into hot pressing
Casting machine, makes different aluminium oxide ceramics base substrates by different moulds；
5）The sintering of aluminium oxide ceramics base substrate：By aluminium oxide ceramics base substrate with ceramic discarded object powder end encapsulation, vibrate closely, put
Enter in moderate oven kiln 1200 DEG C and fire more than 24h, remove the organic matter in ceramic powders, take out and clean out base substrate, then put
Enter in high temperature sagger and sinter and be incubated 2 ~ 4h in 1600 DEG C, after cooling, obtain aluminium oxide ceramic products.
3. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that step 2）In,
Described modifying agent is the mixture of nanoscale calcined kaolin, nanometer grade silica and nanoscale calcinated talc powder, described receives
The mass ratio of meter level calcined kaolin, nanometer grade silica and nanoscale calcinated talc powder is 1.5 ~ 2:1~1.35:1.
4. the method that aluminium oxide ceramics scrap concrete as claimed in claim 3 recycles is it is characterised in that nanoscale calcining is high
Ridge soil, the mass ratio respectively 3.15% of nanometer grade silica and nanoscale calcinated talc powder and discarded object ceramic powder, 2.1%,
1.8%.
5. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that step 2）In,
During secondary ball milling, ceramic discarded object powder and sintering aid are 100 in mass ratio:5 ~ 8 mixing, while adding sintering aid
Add the 0.4 ~ 0.6% of ceramic discarded object powder weight vegetable oil acid, as grinding aid and surfactant.
6. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that step 2）In,
During secondary ball milling, the mass ratio of ceramic discarded object powder and alumina lap spheroid is 1:1.2~1.5.
7. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that step 3）In,
The mesh number of described sieve is 60 ~ 100 mesh.
8. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that described Chinese wax
Weight be the 11.25% of ceramic discarded object powder, the weight of beeswax is the 1.25% of ceramic discarded object powder.
9. aluminium oxide ceramics scrap concrete as claimed in claim 1 or 2 recycles method is it is characterised in that described oxidation
Aluminium pottery discarded object is alumina content >=90%（w/w）Aluminium oxide ceramics discarded object.
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| CN111410522A (en) * | 2020-03-19 | 2020-07-14 | 雅安沃克林环保科技有限公司 | Comprehensive utilization method of spherical aluminum production waste |
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| CN111763078A (en) * | 2020-07-15 | 2020-10-13 | 朱建良 | Method for manufacturing regenerated alumina ceramic balls by using waste alumina material |
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| CN111410522A (en) * | 2020-03-19 | 2020-07-14 | 雅安沃克林环保科技有限公司 | Comprehensive utilization method of spherical aluminum production waste |
| CN111420562A (en) * | 2020-03-19 | 2020-07-17 | 雅安沃克林环保科技有限公司 | Hollow flat ceramic membrane and preparation method thereof |
| CN111410543A (en) * | 2020-04-24 | 2020-07-14 | 朔州西廊煤炭科技有限公司 | Method for preparing functional ceramic engineering material combustion-supporting catalyst by utilizing coal solid waste or bauxite solid waste |
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| CN114671666A (en) * | 2022-04-13 | 2022-06-28 | 许昌学院 | Jun porcelain waste recycling method |
| CN115849881A (en) * | 2022-12-13 | 2023-03-28 | 潍柴火炬科技股份有限公司 | Ceramic powder prepared from aluminum oxide waste, aluminum oxide ceramic and preparation method of aluminum oxide ceramic |
| CN115849881B (en) * | 2022-12-13 | 2024-03-12 | 潍柴火炬科技股份有限公司 | Ceramic powder prepared from alumina waste, alumina ceramic and preparation method thereof |
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