CN102295471A - Foaming ceramics material prepared through adopting polishing ceramic slags as main raw material, and preparation method thereof - Google Patents
Foaming ceramics material prepared through adopting polishing ceramic slags as main raw material, and preparation method thereof Download PDFInfo
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- CN102295471A CN102295471A CN2011101646686A CN201110164668A CN102295471A CN 102295471 A CN102295471 A CN 102295471A CN 2011101646686 A CN2011101646686 A CN 2011101646686A CN 201110164668 A CN201110164668 A CN 201110164668A CN 102295471 A CN102295471 A CN 102295471A
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Abstract
The invention discloses a foaming ceramics material prepared through adopting polishing ceramic slags as a main raw material. The material is prepared through the following steps: mixing the following raw materials and water, wherein the raw materials comprise, by weight, 60-100% of polishing ceramic slags and 0-40% of an admixture; then carrying out compacting and forming, high temperature forming and puffing. The invention further discloses a preparation method for the foaming ceramics material. The foaming ceramics material provided by the present invention can replace the existing forming material, and has good fireproof performance and good heat insulation performance. In addition, the preparation cost is low.
Description
Technical field
The present invention relates to a kind of foam material, relating in particular to a kind of polishing pitchers that adopts is foamed ceramic material of making of major ingredient and preparation method thereof.
Background technology
During producing, ceramic industry can produce a large amount of solid ceramic waste residues, wherein, and the amount maximum of the polishing pitchers of in the ceramic brick polishing process, discharging with building ceramics factory.For example: there are more than 300 families of heavy construction ceramics factory in area, Foshan, Guangdong Province, and all kinds of production lines have more than 2000, and the pitchers annual emissions is more than 4,000,000 tons.Wherein, porcelain plate polishing about 6～8 ton per days of waste residue amount that production line produced were handled these pitchers in the past and were adopted the mode of stacking landfill more.At present, the polishing pitchers of accumulation surpasses 1,000 ten thousand tons, has not only taken a large amount of stacking places, pollutes, and also influences the expanded reproduction of enterprise.This polishing pitchers that produces in the grinding and buffing operation of porcelain brick adopts flowing water to dash row, contain large quantity of moisture in the polishing pitchers, in considerable time, can not obtain drying, not only destroy and stack geographic edatope, cause the soil can't obtain for a long time utilizing, and flowed into the farmland in the rainy day by rain drop erosion and destroy crop growth, perhaps flow into river, pond, farmland and irrigation canals and ditches, cause the long-pending hole of country fair to bury and stop up.Even the polishing pitchers obtains drying, but, be the bulky powder shape after the drying, cause dust from flying polluted air and environment easily because the particle of these polishing pitchers is quite little.
Development along with ceramic industry, in the Qingyuan City in Guangdong, three water, ground such as brilliant and Shandong, Fujian, Hunan, Jiangxi etc. have economized ceramics factory much newly-built, polishing pitchers quantity discharged increases day by day, to take and destroy more soil, therefore polishing the processing of pitchers and utilizing has become the problem of needing solution badly.
Foam material is the material that contains countless small pores, at present, and the following lightweight foam material of normal employing in construction work and the heat insulating engineering:
1. organic foam material: as polyphenyl foam plate, foam polyvinyl chloride warming plate, polyurethane foam glue etc.There is easy firing in this class foam material, and problem such as at high temperature give off poisonous gas.
2. inorganic foamed material, inorganic foamed material is divided into following several:
1. high temperature inorganic foamed material: as leca, multicellular glass and foamed ceramics etc., this type high temp inorganic foamed material is to utilize iron powder, silicon carbide etc. as whipping agent, and the foam materials with intensity that forms under 1000 ℃ of left and right sides high temperature.
2. pearlstone, heaving shales etc.: the foam material that utilizes natural matters such as perlite and shale to be prepared from through calcining is to utilize to discharge crystal water in the natural matter such as perlite and shale or emit gas such as CO2 and form pore in natural matter when calcining;
3. foamed cement and foamed gypsum: be to be that base-material adds foam and forms foamed cement and foamed gypsum with cement, gypsum isogel material at normal temperatures;
4. gas concrete etc.: utilizing lime, cement, sand, slag powders etc. is that base-material adds aluminium powder releasing hydrogen gas under alkaline condition and forms pore, and solidifies under 180～200 ℃ of autoclaved conditions and produce that intensity forms.
Above-mentioned inorganic foamed material consumes more valuable natural resource, as perlite, pitchstone, and makes the cost height of product.
Summary of the invention
One of purpose of the present invention provide a kind of adopt the polishing pitchers be the foamed ceramic material that major ingredient is made, this foamed ceramic material not only can be as the substitute of existing foam materials, and it can also have fire resistance and heat-proof quality preferably, and low cost of manufacture.
It is the foamed ceramic preparation methods that major ingredient is made that two of purpose of the present invention provides above-mentioned employing polishing pitchers.
First purpose of the present invention realizes by following technical measures: a kind of adopt the polishing pitchers be the foamed ceramic material that major ingredient is made, it is characterized in that, after it is added water and is mixed by following raw materials by weight percent, through pressed compact moulding, expanded the forming of high temperature foaming:
Polishing pitchers 60%～100% adulterant 0%～40%.
Recommend the weight of added water to account for 6%～12% of described raw material siccative gross weight in the present invention.
The polishing pitchers that the present invention adopts is to adopt the diamond polishing bistrique to carry out the powdery waste residue that glossing is discharged in the ceramic industry production line, and the granularity of polishing pitchers is 0.15～50 μ m, the about 10 μ m of its mean particle size, and middle granularity is about 8.8 μ m.Its main chemical ingredients sees Table 1, and the inventor finds after deliberation, comprises ceramic plate and the polishing composition with the silicon carbide bistrique in the polishing pitchers, and the composition that wherein polishes the silicon carbide bistrique of usefulness is magnesia oxychloride cement (MgO, MgCl
2), Resins, epoxy, filler and silicon carbide (SiC).Only utilize the SiC in the polishing pitchers to be whipping agent among the present invention, need not to add other whipping agent in addition again and can satisfy the demand that the present invention polishes the pitchers foaming, the SiC in the polishing pitchers emits CO under the outside melting state of hot conditions
2, in molten materials, form a large amount of independent, micro-bubble, and be not communicated with between the bubble, make the foamed ceramic material of gained have the performance of low density, low water absorption and high heat-insulation and heat-preservation.Because the magnesium elements in the bistrique composition that the polishing pitchers contains at high temperature makes material form composite ceramics, can improve the toughness of foam material simultaneously, make the foamed ceramic material have the advantage of higher-strength and cutting processing etc.
Table 1: the main component (%) of polishing pitchers
| Al 2O 3 | SiO 2 | Fe 2O 3 | CaO | MgO | Na 2O | K 2O | Loss on ignition | Cl - | SiC | |
| Scope | 15～18 | 65～69 | 0.6～1.2 | 0.5～0.8 | 3～4 | 1.5～3 | 1～1.5 | 5～8 | 0.02～0.12 | Trace |
Adulterant of the present invention can select to adopt one or more the mixture in china clay in powder (or claiming ceramic industry waste residue), ceramic broken powder and the slag ash, be used for dilute Si C content, adjust the swelling temperature and the expanded time of foamed ceramic material, so that adjust the density of hole size and foamed ceramic material in the foamed ceramic material.Show that by test adulterant contains Fe
2O
3Be not more than 2% for well, excessively be prone to inhomogeneous gross blow hole phenomenon.China clay in powder, ceramic broken powder volume are big more, and the density of foamed ceramic material, intensity increase; The slag ash volume is big more, and the expanded time of foamed ceramic material is short, and abscess is big, distortion is big.
China clay in powder of the present invention is by the china clay waste residue in the ceramic industry is removed impurity, the homogenizing powdering obtains, its granularity is in 0.0625mm, and the china clay waste residue is meant porcelain mud off-specification material or washes the mud of discharging in the mud process etc. without incinerating porcelain mud waste material in the described ceramic industry.The broken powder of described pottery is by ceramic product or half-finished broken waste residue, and through removing foreign material, grinding forms, and its particle diameter is in 0.01～0.125mm scope.
Second purpose of the present invention is achieved through the following technical solutions: the above-mentioned employing polishing of a kind of the present invention pitchers is the foamed ceramic preparation methods that major ingredient is made, and may further comprise the steps:
(1) pitchers pre-treatment: collect and adopt the diamond polishing bistrique to carry out the polishing pitchers slurry that glossing is discharged in the ceramic industry production line, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes the polishing pitchers form fine powder material;
(2) raw material metering: the weight percent by above-mentioned each raw material of the present invention carries out the raw material computation weigh;
(3) batching: with each raw material that has measured in the step (2) mix mixed material, add entry then and mix, make it to form loose, the wet mixed material uniformly of certain humidity;
(4) blank moulding: the wet mixed material of step (3) is delivered to shaper compression moulding, gets shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed at that to carry out drying, preheating, roasting in the tunnel furnace expanded, kiln discharge cools then, obtains the foamed ceramic material.
Water consumption during batching is bigger to the blank shaping influence, and base was easily broken when the water yield was lacked moulding, and the many mixed materials of the water yield easily lump, base is easy to crack.And water consumption is often decided according to factors such as raw material, proportioning, weather and forming pressures, and therefore the best water consumption of step of the present invention (3) adding accounts for 6～12% of raw material siccative gross weight.
The pressure of blank moulding is influential to the performances such as density, intensity and expansion homogeneity of final foamed products, in actually operating, can adjust forming pressure, to adapt to different product requirements, but consider processing condition stable of the firing process that keeps follow-up, the pressure of blank moulding is recommended as 5～15MPa in the described in the present invention step (4).
Shaping blank should be beneficial to stable stacking in the step described in the present invention (4), thickness is advisable to be not more than 50mm, for make blank in roasting process in external enwergy comparatively fast reach consistent temperature, blank inside can be provided with cavity, so that be the expansion reserving space of blank, help heat passage and expansion.Therefore, blank of the present invention is recommended to make hollow blank or porous blank, for example adopts the hollow brick shape or the tabular blank of bar of forcing machine moulding; Perhaps adopt perforated brick, blocks shape or the plate of press compression moulding, blocky blank.
In the step described in the present invention (5) roasting of blank expanded is preheating in 200～950 ℃ of preheating zones earlier in tunnel furnace, entering roast area again, to carry out roasting at 950～1100 ℃ expanded, total time is in 2～12 hours scopes.Warm up time, when being the breaking type light-weight aggregate for last product, can quicken warm up time, shortens to 1～2 hour; When being the big product of regular profile or size, should be noted that to prevent craze and transfiguration that be to be advisable in 5～11 hours warm up time for last product.The expanded time of roasting, about 8～30 minutes.
The shape of gained foamed ceramic material is decided by blank shape, bulk, sheet, brick shape, vesicular etc. is arranged or through being processed into desired shape; The processing of foamed ceramic material fragmentation can also be obtained the light-weight aggregate of rubble shape, sand shape.
The present invention compared with prior art has following beneficial effect:
(1) turn waste into wealth: the main component of the polishing pitchers that the present invention adopts is the oxide compound of silicon and aluminium, stable performance, can replace sand, clay, sand-lime, potter's clay etc. as main raw material, the various plates of making, block foamed ceramic material and light-weight aggregate can be used for heat-insulation and heat-preservation, light weight concrete, walling field.Again the utilization of polishing pitchers, can solve the soil and the various problem of environmental pollution that take because of its landfill stacking effectively, particularly a large amount of polishing pitchers that use are made the foamed ceramic material, can eliminate the pollution of polishing pitchers in a short time effectively, not only needn't drop into the expense of handling the polishing pitchers, and can also make it produce economic benefit, kill two birds with one stone.
(2) foamed ceramic material light weight, fire resistance height, thermal insulation is good, intensity is high: the present invention utilizes the SiC of polishing in the pitchers to be whipping agent, and SiC emits CO under high temperature exterior melting state
2, form independent, micro-bubble, and be not communicated with between the bubble, make the foamed ceramic material internal have a large amount of small disconnected holes, thereby greatly reduce the density of foamed ceramic material, its density is at 300～800kg/m
3Foamed ceramic material of the present invention has that water-intake rate is low, heat preservation and insulation good, the characteristic of nonflammable, acid-alkali-corrosive-resisting thereby make according to above-mentioned principle, is ideal insulation material and light-weight aggregate for building.Owing to contain magnesium elements in the polishing pitchers, at high temperature form composite ceramics, thereby improved the toughness of foamed ceramic material, make the foamed ceramic material have advantages such as higher-strength and cutting processing.The foamed ceramic material can replace organic heat-insulating lagging materials such as EPS, and replaces pearlstone, glass bead, and inorganic materials such as leca are used for fields such as heat insulating, building energy conservation, lightweight concrete and light mortar.
(3) energy efficient, reduce cost: the polishing pitchers be the ceramic industry waste residue, amount is easy to get more, be loose powdery, only need a common stirrer to stir and to pulverize, do not need ball mill to carry out levigate or pulverizer is broken, saved power consumption of polymer processing, adopt the Processes and apparatus of tunnel furnace production to carry out continuous production, the utilization rate of waste heat height, output is big, environment protection treating is effective, saves investment.And, also reduced production cost because residue doping quantity is big.
(4) save natural resource: owing to can replace inorganic materials such as pearlstone, glass bead, leca, be used for heat insulating and lightweight concrete, light mortar can be saved natural resource such as perlite and pitchstone.
Embodiment
Below in conjunction with embodiment and Comparative Examples the present invention is set forth, yet protection scope of the present invention is not only to be confined to following examples.The person of an ordinary skill in the technical field all can realize purpose of the present invention according to content disclosed by the invention.
Below among each embodiment the production line of foamed ceramic material adopt the production line of tunnel furnace get final product, the blank shaper adopts punching press or extruding type shaper, stirrer adopts biaxial rneader or planetary stirring machine, carries employing worm conveyor or conveyor.
Embodiment one
Raw material siccative (weight percent):
Polishing pitchers 100%.
The preparation method:
(1) pitchers pre-treatment: collect and adopt the diamond polishing bistrique to carry out the polishing pitchers slurry that glossing is discharged in the ceramic industry production line, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes the polishing pitchers form fine powder material;
(2) raw material metering: the computation weigh that polishes pitchers by the weight percent of above-mentioned raw materials;
(3) batching: the polishing pitchers in step (2), 7% the water that adds consumption then and be raw material siccative gross weight mixes, and makes it to form loose, uniform water content and be 7% wet mixed material;
(4) blank moulding: the wet mixed material of step (3) sent in the stirrer stir, be dispersed into loose material after, be delivered to shaper with worm conveyor or conveyor, with the pressure compression moulding of about 5Mpa, must shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed in the tunnel furnace earlier in 200～950 ℃ of preheating zones preheating 2.5 hours, enter roast area again and carry out roasting, expanded 30 minutes at 950～1050 ℃, be about 3 hours total time, kiln discharge nature or artificial cooling cooling at once obtains the foamed ceramic material then.
The foamed ceramic material is broken into broken shape light-weight aggregate: maximum particle diameter is 15mm, and density is 380kg/m
3, thermal conductivity 0.10w/mk, cylindrical compress strength 1.2MPa.
Embodiment two
Raw material (weight percent):
Polishing pitchers 80% pulverized slag 20%.
The preparation method:
(1) raw materials pretreatment:
1. polish the pre-treatment of pitchers: collect and adopt the diamond polishing bistrique to carry out the polishing pitchers slurry that glossing is discharged in the ceramic industry production line, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes the polishing pitchers form fine powder material;
2. the pre-treatment of pulverized slag: it is pulverized slag about 0.125～0.5mm that pulverized slag is broken into particle diameter, and described slag is the slag that coal furnace or coal gas furnace are discharged, and contains coal amount about 12%;
(2) raw material metering: the computation weigh that polishes pitchers by the weight percent of above-mentioned raw materials;
(3) batching: the polishing pitchers in step (2), 6% the water that adds consumption then and be raw material siccative gross weight mixes, and makes it to form loose, uniform water content and be 6% wet mixed material;
(4) blank moulding: the wet mixed material of step (3) sent in the stirrer stir, be dispersed into loose material after, be delivered to shaper with conveyor, with the pressure compression moulding of about 5Mpa, must shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed in the tunnel furnace earlier in 200～950 ℃ of preheating zones preheating 1.5 hours, enter roast area again and carry out roasting, expanded 30 minutes at 950～1100 ℃, total time is about 2 hours, kiln discharge nature or artificial cooling cooling then obtains the foamed ceramic material.
The foamed ceramic material is broken into broken shape foamed ceramic light-weight aggregate: maximum particle diameter is 25mm, and density is 280kg/m
3, thermal conductivity 0.08w/mk, cylindrical compress strength 0.8MPa.
Embodiment three
Raw material (weight percent):
Polishing pitchers 70% china clay in powder 30%.
The preparation method:
(1) pre-treatment of raw material:
1. polish the pre-treatment of pitchers: collect the polishing pitchers slurry that glossing link that the silicon carbide bistrique that adopts polishing usefulness in the ceramic industry production line carries out is discharged, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes polishing pitchers formation fine powder material;
2. the pre-treatment of china clay in powder: china clay waste residue in the ceramic industry of collecting is removed sand grains or impurity, the homogenizing powdering obtains china clay in powder, and the china clay waste residue is meant porcelain mud off-specification material or washes the mud of discharging in the mud process etc. without incinerating porcelain mud waste material in the described ceramic industry;
(2) raw material metering: the computation weigh that polishes pitchers and adulterant by the weight percent of above-mentioned raw materials;
(3) batching: with each raw material that has measured in the step (2) mix mixed material, 12% the water that adds consumption then and be raw material siccative gross weight mixes, and makes it to form loose, uniform water content and be 12% wet mixed material;
(4) blank moulding: the wet mixed material of step (3) sent in the stirrer stir, be dispersed into loose material after, be delivered to shaper with conveyor, with the pressure compression moulding of about 10Mpa, must shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed in the tunnel furnace earlier in 200～950 ℃ of preheating zones preheating 7.5 hours, enter roast area again and carry out roasting, expanded 30 minutes at 950～1100 ℃, total time is 8 hours, kiln discharge nature or artificial cooling cooling at once obtains the foamed ceramic material then.
The materials processing of gained foamed ceramic is cut into foamed ceramic plate (300mm * 300mm * 30mm): density 450kg/m
3, thermal conductivity 0.13w/mk, 30mm cubic compressive strength 2.5MPa.
Embodiment four
Raw material (weight part):
Polishing pitchers 80% ceramic broken powder 20%.
The preparation method:
(1) pre-treatment of raw material:
1. collect in the ceramic industry production line polishing pitchers slurry that glossing link that the silicon carbide bistrique that adopts polishing usefulness carries out is discharged, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes polishing pitchers formation fine powder material;
2. ceramic broken powder is ceramic product or half-finished broken waste residue, and through removing foreign material, grinding is the powder of 0.01～0.125mm to particle diameter;
(2) raw material metering: the computation weigh that polishes pitchers and adulterant by the weight percent of above-mentioned raw materials;
(3) batching: with each raw material that has measured in the step (2) mix mixed material, 8% the water that adds consumption then and be raw material siccative gross weight mixes, and makes it to form loose, uniform water content and be 8% wet mixed material;
(4) blank moulding: the wet mixed material of step (3) sent in the stirrer stir, be dispersed into loose material after, be delivered to shaper with worm conveyor, with the pressure compression moulding of about 10Mpa, must shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed in the tunnel furnace earlier in 200～950 ℃ of preheating zones preheating 9.5 hours, enter roast area again and carry out roasting, expanded 30 minutes at 950～1100 ℃, be about 10 hours total time, kiln discharge nature or artificial cooling cooling at once obtains the foamed ceramic material then.
The materials processing of gained foamed ceramic is cut into 300mm * 300mm * 30mm foamed ceramic plate: density 400kg/m
3, thermal conductivity 0.11w/mk, 30mm cubic compressive strength 2.0MPa.
Embodiment five
Raw material (weight percent):
Polishing pitchers 60% pulverized slag 15% china clay in powder 25%.
The preparation method:
(1) pitchers pre-treatment: collect and adopt the diamond polishing bistrique to carry out the polishing pitchers slurry that glossing is discharged in the ceramic industry production line, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes the polishing pitchers form fine powder material;
(2) raw material metering: the computation weigh that polishes pitchers and adulterant by the weight percent of above-mentioned raw materials;
(3) batching: with each raw material that has measured in the step (2) mix mixed material, 10% the water that adds consumption then and be raw material siccative gross weight mixes, and makes it to form loose, uniform water content and be 10% wet mixed material;
(4) blank moulding: the wet mixed material of step (3) sent in the stirrer stir, be dispersed into loose material after, be delivered to shaper with conveyor, with the pressure compression moulding of about 15Mpa, must shaping blank;
(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed in the tunnel furnace earlier in 200～950 ℃ of preheating zones preheating 11.5 hours, enter roast area again and carry out roasting, expanded 30 minutes at 950～1100 ℃, total time is 12 hours, kiln discharge nature or artificial cooling cooling at once obtains the foamed ceramic material then.
It is 30mm foamed ceramic plate: density 550kg/m that the materials processing of gained foamed ceramic is cut into thickness
3, thermal conductivity 0.14w/mk, 30mm cubic compressive strength 4.0MPa.
Claims (10)
- One kind to adopt the polishing pitchers be the foamed ceramic material that major ingredient is made, it is characterized in that, after it is added water and is mixed by following raw materials by weight percent, through pressed compact moulding, expanded the forming of high temperature foaming:Polishing pitchers 60%～100% adulterant 0%～40%.
- 2. employing polishing pitchers according to claim 1 is the foamed ceramic material that major ingredient is made, and it is characterized in that the weight of described water accounts for 6%～12% of described raw material siccative gross weight.
- 3. employing polishing pitchers according to claim 1 and 2 is the foamed ceramic material that major ingredient is made, and it is characterized in that, the mixture of one or more in described adulterant selection employing china clay in powder, ceramic broken powder and the slag ash.
- 4. to adopt the polishing pitchers be the foamed ceramic preparation methods that major ingredient is made to a claim 1 or 2 or 3, it is characterized in that, may further comprise the steps:(1) pitchers pre-treatment: collect and adopt the diamond polishing bistrique to carry out the polishing pitchers slurry that glossing is discharged in the ceramic industry production line, the processing of carrying out impurity elimination, dehydration, drying then and pulverizing makes the polishing pitchers form fine powder material;(2) raw material metering: the weight percent by described each raw material carries out the raw material computation weigh;(3) batching: with each raw material that has measured in the step (2) mix mixed material, add entry then and mix, make it to form loose, wet mixed material uniformly;(4) blank moulding: the wet mixed material of step (3) is delivered to shaper compression moulding, gets shaping blank;(5) burn till: the shaping blank of step (4) is piled up neatly sign indicating number on the pile dolly, be placed at that to carry out drying, preheating, roasting in the tunnel furnace expanded, kiln discharge cools then, obtains the foamed ceramic material.
- 5. employing polishing pitchers according to claim 4 is the foamed ceramic preparation methods that major ingredient is made, and it is characterized in that the best water consumption that described step (3) adds accounts for 6～12% of raw material siccative gross weight.
- 6. employing polishing pitchers according to claim 4 is the foamed ceramic preparation methods that major ingredient is made, and it is characterized in that the pressure of blank moulding is 5～15MPa in the described step (4).
- 7. employing polishing pitchers according to claim 4 is the foamed ceramic preparation methods that major ingredient is made, it is characterized in that, the roasting of the middle blank of described step (5) is expanded to be preheating in 200～950 ℃ of preheating zones earlier in tunnel furnace, entering roast area again, to carry out roasting at 950～1100 ℃ expanded, and total time is in 2～12 hours scopes.
- 8. be the foamed ceramic preparation methods that major ingredient is made according to claim 4 or 5 or 6 or 7 described employing polishing pitchers, it is characterized in that the thickness of blank is in 50mm in the described step (4).
- 9. employing polishing pitchers according to claim 8 is the foamed ceramic preparation methods that major ingredient is made, and it is characterized in that blank inside is provided with cavity in the described step (4), so that be the expansion reserving space of blank, helps heat passage and expansion.
- 10. employing polishing pitchers according to claim 9 is the foamed ceramic preparation methods that major ingredient is made, and it is characterized in that described blank is hollow blank or porous blank.
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| CN103626517A (en) * | 2013-11-06 | 2014-03-12 | 中国科学院广州能源研究所 | Porous ceramsite and preparation method thereof |
| CN103626517B (en) * | 2013-11-06 | 2015-10-28 | 中国科学院广州能源研究所 | A kind of preparation method of porous ceramic grain |
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| CN106278365A (en) * | 2016-07-27 | 2017-01-04 | 北京大学 | With sintering brick permeable to water that shraff is prepared for major ingredient and preparation method thereof |
| CN110950558A (en) * | 2018-09-26 | 2020-04-03 | 广东清大同科环保技术有限公司 | Application of ceramic waste in preparation of high-strength lightweight aggregate and high-strength lightweight aggregate prepared from ceramic waste |
| CN109704725A (en) * | 2019-02-25 | 2019-05-03 | 广州大学 | Ceramic polished dregs porcelain granule of urban wastewater treatment sludge and preparation method thereof |
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| CN110014511A (en) * | 2019-05-08 | 2019-07-16 | 辽宁罕王绿色建材有限公司 | A kind of distributing method producing light foamed ceramic partition plate |
| CN112209734A (en) * | 2019-07-11 | 2021-01-12 | 内蒙古建能兴辉陶瓷有限公司 | Method for preparing foamed ceramic material by completely utilizing industrial solid waste |
| CN112209621A (en) * | 2019-07-11 | 2021-01-12 | 内蒙古建能兴辉陶瓷有限公司 | Novel composite sintered plate and preparation method thereof |
| CN110655385A (en) * | 2019-09-30 | 2020-01-07 | 湖南中邦再生资源科技有限公司 | Light environment-friendly ceramsite and preparation method and application thereof |
| CN110698099A (en) * | 2019-10-18 | 2020-01-17 | 邝文辉 | Secondary utilization method of ceramic industrial polishing slag in concrete and mortar |
| CN113413837A (en) * | 2021-06-02 | 2021-09-21 | 杨建容 | Advanced inorganic non-metallic material aquogel zeolite preparation preprocessing device |
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