CN106977212B - A kind of method and its recovery system of powder classification recycling and reusing - Google Patents
A kind of method and its recovery system of powder classification recycling and reusing Download PDFInfo
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Abstract
The invention discloses the methods and its recovery system of a kind of classification recycling and reusing of powder, the following steps are included: step A, classified according to the color after the chemical component and firing after drying to ceramic powder, different classes of ceramic powder classification carries out finished product base-material after spray drying and dedusting, and the ceramic powder being collected into after dedusting is stored according to category classification, defining the ceramic powder being collected into after dedusting is ceramic feed back；Step B extracts same category of ceramic feed back and slurry is made.The method of the powder classification recycling and reusing is recycled by classifying to be spray-dried and classify to ceramic powder, ceramics feed back chemical component and powder color collected by bag-type dust is avoided to have differences big problem, and then it avoids causing the ceramic firing deformation degree and strength fluctuation produced big using the big ceramic feed back of difference, it realizes to the recycling for using ceramic feed back, reduces raw material usage quantity and waste yield.
Description
Technical field
The present invention relates to the methods and its recycling system of architectural pottery field more particularly to a kind of classification recycling and reusing of powder
System.
Background technique
It is mainly crushed raw material by the way of wet ball grinding in ceramic industry, then powder is made by being spray-dried, is spraying
During mist is dry, particle tiny ceramic powder is taken away while taking tail gas away, according to statistics, the taken away ceramic powder of tail gas
The weight of material accounts for about the 5% of ceramic powder production.In order to reduce the solids particles being discharged into atmosphere, generally adopt at present
With the mode of bag-type dust, the dust-filtering in tail gas is fallen, cloth bag how is handled and filters down dust as urgently to be resolved
Problem.Enterprise produces multiple product simultaneously in practice, therefore spray dryer handles different types of ceramic powder, so that dedusting
There is biggish difference in chemical component and after burning in color in the powder being collected into, and particle is comparatively fine, if therefore straight
It connecing and ball milling, powder processed and use is carried out to the ceramic feed back after spray drying, then the percent of firing shrinkage of the ceramic burnt out is big,
It is easy to deform in firing.
Summary of the invention
It is an object of the invention to propose the method and its recovery system of a kind of powder classification recycling and reusing, by pottery
Ceramic powder classification spray drying and classification recycling avoid causing the ceramic produced firing to be received using the big ceramic feed back of difference
Contracting is big and strength fluctuation is big, effectively reduces powder loss, reduces raw material usage quantity and waste yield.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of method of powder classification recycling and reusing, comprising the following steps:
Step A classifies to ceramic powder according to the color after the chemical component and firing after drying, different classes of
Ceramic powder classification carries out spray drying and dedusting after finished product base-material, and by the ceramic powder being collected into after dedusting according to
Category classification storage, defining the ceramic powder being collected into after dedusting is ceramic feed back；
Step B extracts same category of ceramic feed back and slurry is made；
Step C will be made the ceramic feed back after slurry and carry out dispersion sieving in step B；
Step D, to through step C treated ceramic feed back carries out composition detection, and by composition detection result and corresponding
Finished product base material formulation, which compares, obtains component difference data, is carried out according to ingredient of the component difference data to ceramic feed back
Adjustment, keeps the ingredient of ceramic feed back consistent with corresponding finished product base material formulation；
Step E, to treated that ceramic feed back is spray-dried through step D, and by the ceramic feed back after spray drying
It is incorporated into finished product base-material made from step A, produces ceramic.
Preferably, in the step D, contain plastic mud material into the raw material that ceramic feed back is added when adjustment.
Preferably, the step E further includes prefabrication detection:
Ceramic feed back after spray drying is incorporated into finished product base-material made from step A by step E1, to be made prefabricated
The incorporation of product base-material, the ceramics feed back is 5%~12% by mass percentage；
Prefabrication base-material in step E1 is pressed into adobe and is burnt by step E2, and preformed bricks are made；
Step E3 detects the performance indexes of the preformed bricks, if all properties index of the preformed bricks all reaches
Production requirement can then carry out the batch production of ceramic；If the preformed bricks have one or more performance indicators not up to produce
It is required that then adjusting the incorporation of the ceramic feed back, newly formed preformed bricks of laying equal stress on carry out detection until up to standard.
Preferably, the step B specifically:
Step B1, according to mass percent: ceramic feed back 64%~67%, water 33%~36% weigh same category of
Ceramic feed back and water；
The weighed water of step B1 is added toward slurrying pond in step B2；Then according to mass percent: sodium tripolyphosphate
0.04%~0.06%, water 99.94%~99.96% is added sodium tripolyphosphate toward slurrying pond and stirs evenly；
Step B3 is added the weighed ceramic feed back of the step B1 toward slurrying pond and stirs evenly, ceramic slurry is made.
Preferably, the step C specifically:
Step C1 is added suitable quantity of water toward ceramic slurry made from step B, is reached with adjusting the flow velocity of ceramic slurry: 100ml
Volt cup delivery time 35s~45s；
Step C2 will be transported to dispersion cylinder through step C1 ceramic slurry adjusted and disperse；
Step C3, the ceramic slurry after dispersion is transported to rotate through sieves with 100 mesh sieve net in cribellum.
Preferably, the step C further include: step C4 handle except iron to the ceramic slurry after sieving.
Preferably, in the step A, according to the color after the chemical component and firing after drying, ceramic powder is divided
At polishing without toner material, polish light powder, no toner material modelled after an antique, be of little use powder and dark powder；
For powder and the dark powder of being of little use, collected ceramics feed back is directly squeezed into mud cake；
For polishing without toner material, the light powder of polishing and no toner material modelled after an antique, collected ceramics feed back is returned
It receives and recycles, that is, carry out the processing of the step B to step E.
Preferably, the recovery system of the method for the powder classification recycling and reusing, being from upstream to downstream successively includes ball
Mill unit, bag dust removal unit, recycling filler bin group, slurrying pond, dispersion cylinder, rotated cribellum and except iron at spray drying unit
Device；
The ball milling unit includes more table grinders, and the spray drying unit includes multiple spray drying units, described
Bag dust removal unit includes multiple bag filters, and the recycling filler bin group includes multiple recycling filler bins；
Multiple spray dryers in the same spray drying unit connect the same bag filter.
Preferably, the slurrying pond and the inside of dispersion cylinder are equipped with blender；
The feed inlet of the dispersion cylinder is set to the bottom of the dispersion cylinder, and the discharge port of the dispersion cylinder is set to described
The top of dispersion cylinder；
The sieve for rotating cribellum is 100 mesh screens.
The method of the powder classification recycling and reusing is recycled by classifying to be spray-dried and classify to ceramic powder, is avoided
Ceramics feed back chemical component and powder color collected by drying, dedusting have differences big problem, and then avoid utilizing difference
Big ceramic feed back leads to the ceramic produced firing contraction greatly and strength fluctuation is big, effectively reduces powder loss, reduces former
Materials'use quantity and waste yield, avoid the waste of powder, and powder reuse ratio collected by dedusting reaches 90%
More than, reduce production cost.
Detailed description of the invention
The present invention will be further described for attached drawing, but the content in attached drawing does not constitute any limitation of the invention.
Fig. 1 is the recovery system structural schematic diagram of the one of embodiment of the present invention；
Fig. 2 is the spray drying unit structure chart of the one of embodiment of the present invention.
Wherein: slurrying pond 1；Dispersion cylinder 2；Rotated cribellum 3；Ball milling unit 4；It is spray-dried unit 5；Bag dust removal unit
6；Recycle filler bin group 7；Iron remover 8；Spray dryer 51；Bag filter 61.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment one,
The method of the powder classification recycling and reusing of the present embodiment, comprising the following steps:
Step A classifies to ceramic powder according to the color after the chemical component and firing after drying, different classes of
Ceramic powder classification carries out spray drying and dedusting after finished product base-material, and by the ceramic powder being collected into after dedusting according to
Category classification storage, defining the ceramic powder being collected into after dedusting is ceramic feed back；
Step B extracts same category of ceramic feed back and slurry is made；
Step C will be made the ceramic feed back after slurry and carry out dispersion sieving in step B；
Step D, to through step C treated ceramic feed back carries out composition detection, and by composition detection result and corresponding
Finished product base material formulation, which compares, obtains component difference data, is carried out according to ingredient of the component difference data to ceramic feed back
Adjustment, keeps the ingredient of ceramic feed back consistent with corresponding finished product base material formulation；
Step E, to treated that ceramic feed back is spray-dried through step D, and by the ceramic feed back after spray drying
It is incorporated into finished product base-material made from step A, produces ceramic.
The method of powder classification recycling and reusing is spray-dried by classifying to ceramic powder, and to spray drying after
Ceramics feed back classified use collected by tails dedusting avoids ceramics feed back chemical component and powder collected by tails dedusting
Color has differences big problem, and then avoids causing the ceramic produced firing to be shunk using the big ceramic feed back of difference
Big and strength fluctuation is big, effectively reduces powder loss, reduces raw material usage quantity and waste yield.
The method of the powder classification recycling and reusing carries out slurrying according to category classification to the ceramic feed back of classification recycling
Dispersion sieving, to remove impurity；Then composition detection is carried out to obtain component difference data, convenient for by the ingredient tune of ceramic feed back
It is made into consistent with corresponding finished product base material formulation, the corresponding finished product base material formulation can be same category finished product base material formulation
In any one；Finally, deployed ceramic feed back is spray dried to graininess, it is incorporated into finished product base-material and carries out again
Ceramic tile, bathtub, toilet seat etc. can be made in subsequent Ceramic Production according to production needs.The powder classification recycling is again
The method utilized avoids the waste of powder, and powder reuse ratio collected by dedusting reaches 90% or more, reduces production cost.
Preferably, in the step D, contain plastic mud material into the raw material that ceramic feed back is added when adjustment.Add plasticity
Pug can make particle made of subsequent step E mist projection granulating have higher intensity, and rammed ceramic body intensity is high, cause
Close property is good.Meanwhile the tiny ceramic powder of particle can more preferably be reunited using plastic mud material, make sintered ceramic system
The constriction coefficient of product is stablized in controlled range.
Preferably, the step E further includes prefabrication detection:
Ceramic feed back after spray drying is incorporated into finished product base-material made from step A by step E1, to be made prefabricated
The incorporation of product base-material, the ceramics feed back is 5%~12% by mass percentage；
Prefabrication base-material in step E1 is pressed into adobe and is burnt by step E2, and preformed bricks are made；
Step E3 detects the performance indexes of the preformed bricks, if all properties index of the preformed bricks all reaches
Production requirement can then carry out the batch production of ceramic；If the preformed bricks have one or more performance indicators not up to produce
It is required that then adjusting the incorporation of the ceramic feed back, newly formed preformed bricks of laying equal stress on carry out detection until up to standard.
The tail gas that the ceramic feed back being collected into due to dedusting is generated from spray drying, the ceramic feed back particle being collected into
D50 is 4.84 μm, and the D50 of the ceramic feed back particle after ball milling is 4.29 μm, and the D50 of finished product base granule is 4.96 μm, institute
It states ceramic feed back to compare with finished product base-material, particle is comparatively fine.D50 is commonly used to indicate the average particle size of powder, i.e. a sample
Cumulative particle sizes percentile reach partial size corresponding when 50%, its physical significance is that partial size is greater than its particle and accounts for
50%, 50%, D50, which is also accounted for, less than its particle is also meso-position radius or median particle diameter.So if directly to the pottery after spray drying
Porcelain feed back carries out ball milling, powder processed and use, then the percent of firing shrinkage of the ceramic burnt out is big, is easy to become in firing
Shape.
Therefore, ceramic feed back need to be incorporated into finished product base-material and is used, and pass through the prefabrication before batch production
Detection determines the optimal mixing amount of the ceramic feed back, avoids incorporation improper and influence the quality of production of ceramic.It is described
It is 5%~12% that the method for powder classification recycling and reusing controls the incorporation of ceramic feed back by mass percentage, is both sufficiently returned
It receives using ceramic feed back, and avoids causing the percent of firing shrinkage of powder entirety excessive because ceramic feed back incorporation is excessive, according to
The firing feature of variety classes ceramic powder adjusts the incorporation of ceramic feed back, until all properties index of the preformed bricks is all
The batch production of ceramic can be carried out by reaching production requirement, improve the validity of recycling.The performance indicator may include
Water absorption rate, flexural strength, flatness, thermal shock resistance and hysteresis set situation.
Preferably, the step B specifically:
Step B1, according to mass percent: ceramic feed back 64%~67%, water 33%~36% weigh same category of
Ceramic feed back and water；
The weighed water of step B1 is added toward slurrying pond 1 in step B2；Then according to mass percent: sodium tripolyphosphate
0.04%~0.06%, water 99.94%~99.96% is added sodium tripolyphosphate toward slurrying pond 1 and stirs evenly；
Step B3 is added the weighed ceramic feed back of the step B1 toward slurrying pond 1 and stirs evenly, ceramic slurry is made.
Slurrying time control potting porcelain feed back 64%~67%, preferably 65%；Water 33%~36%, preferably 35%；To
Both it had avoided ceramic slurry water content very few and had caused ceramic slurry feeding-up, poor fluidity is unfavorable for subsequent spray drying, and keeps away
Exempting from ceramic slurry water content excessively causes subsequent spray drying time too long, increases energy consumption.The sodium tripolyphosphate, which plays, to be subtracted
The effect of aqua had not only reduced water consumption needed for slurrying, but also prevented ceramic slurry feeding-up, improved the mobility of ceramic slurry.
Preferably, the step C specifically:
Step C1 is added suitable quantity of water toward ceramic slurry made from step B, is reached with adjusting the flow velocity of ceramic slurry: 100ml
Volt cup delivery time 35s~45s；
Step C2 will be transported to dispersion cylinder 2 through step C1 ceramic slurry adjusted and disperse；
Step C3, the ceramic slurry after dispersion is transported to rotate through in cribellum 3 sieves with 100 mesh sieve net.
The flow velocity of adjustment ceramic slurry reaches before dispersion: 100ml volts of cup delivery time 35s~45s, so that flow velocity is suitable
In, dispersion and sieving are more abundant；Flow velocity is too small, causes dispersion screening efficiency low, and flow velocity is excessive, keeps jitter time short, point
It dissipates insufficient.The method of the powder classification recycling and reusing disperses ceramic slurry, further dissolves ceramic particle
Yu Shuizhong is simultaneously uniformly mixed, and avoids agglomerating；It is sieved after dispersion to ceramic slurry, has not only improved the homogeneity of ceramic slurry, but also
It can remove the impurity in ceramic slurry, avoid influence of the impurity to subsequent composition detection accuracy.
Preferably, the step C further include: step C4 handle except iron to the ceramic slurry after sieving.To ceramic slurry
Material can further remove impurity except iron, improve subsequent composition detection accuracy.
Preferably, in the step A, according to the color after the chemical component and firing after drying, ceramic powder is divided
At polishing without toner material, polish light powder, no toner material modelled after an antique, be of little use powder and dark powder；
For powder and the dark powder of being of little use, collected ceramics feed back is directly squeezed into mud cake；
For polishing without toner material, the light powder of polishing and no toner material modelled after an antique, collected ceramics feed back is returned
It receives and recycles, that is, carry out the processing of the step B to step E.
By classification, the difference because of ingredient and color is effectively avoided to lead to the ceramic strength fluctuation burnt out greatly, no
The problems such as beautiful.As the ceramics feed back negligible amounts collected by both powder and dark powder that are of little use, can not change again
Powder processed is starched, therefore directly landfill disposal is sold or carried out in squeezing at mud cake by it.And polish without toner material, polish light powder and
No toner material modelled after an antique is common powder, and collected ceramics feed back quantity is larger, can slurrying powder again, effectively reduce powder
Loss.
Preferably, the recovery system of the method for powder classification recycling and reusing, as shown in Figure 1, being from upstream to down
Trip successively includes ball milling unit 4, spray drying unit 5, bag dust removal unit 6, recycling filler bin group 7, slurrying pond 1, dispersion cylinder
2, cribellum 3 and iron remover 8 were rotated；
The ball milling unit 4 includes more table grinders, and the spray drying unit 5 includes multiple spray drying units, institute
Stating bag dust removal unit 6 includes multiple bag filters 61, and the recycling filler bin group 7 includes multiple recycling filler bins；
As shown in Fig. 2, being connected in the same multiple spray dryers 51 being spray-dried in unit same described
Bag filter 61.
The recovery system is recycled by classifying to be spray-dried and classify to ceramic powder, is avoided collected by drying, dedusting
Ceramic feed back chemical component and powder color have differences big problem, effectively reduce powder loss, reduce raw material and use
Quantity and waste yield.When production, ceramic powder is assigned to corresponding ball mill according to classification and carries out ball milling, then presses again
The ceramic feed back that corresponding spray drying unit is spray-dried, and each bag filter 61 is collected into is assigned to according to classification
It is assigned to corresponding recycling filler bin according to classification to be stored, to complete the classification of ceramic feed back.And ceramic feed back is again
It is completed using then passing through slurrying pond 1, dispersion cylinder 2, rotating cribellum 3 and iron remover 8, same category of ceramics being transported to of feed back
Stock tank 1 carries out slurrying, is then delivered to dispersion cylinder 2 and is dispersed, and is then transported to and rotated cribellum 3 and be sieved, last defeated
Iron remover 8 is sent to carry out except iron.Except the ceramic slurry after iron by composition detection and deploy to and corresponding finished product base material formulation
After consistent, then the spray drying unit being transported to for handling corresponding finished product base-material is spray-dried, and is finally mixed pari passu
Enter into finished product base-material, to complete the recycling of ceramic feed back.Due to multiple sprays in the same spray drying unit
Mist drying machine 51 can connect the same bag filter 61 and be dusted for handling same category of ceramic powder
With the collection of ceramic feed back, equipment input cost is saved.
Preferably, the slurrying pond 1 and the inside of dispersion cylinder 2 are equipped with blender；The feed inlet of the dispersion cylinder 2 is arranged
In the bottom of the dispersion cylinder 2, the discharge port of the dispersion cylinder 2 is set to the top of the dispersion cylinder 2；It is described to rotate cribellum
3 sieve is 100 mesh screens.
The slurrying pond 1 and the inside of dispersion cylinder 2 are equipped with blender, for ceramic feed back dissolution and be uniformly mixed.
The blender equipped with 4 paddle groups can be used in the slurrying pond 1, and the paddle of each paddle group is arranged at a stirring
On axis, two neighboring paddle group is mutually perpendicular to, and each paddle group installs 4 paddles in the perpendicular direction, and increase is stirred
Active area is mixed, mixing quality is improved.The motor of the settable high-speed rotation of blender of the dispersion cylinder 2, the transmission shaft of motor
Helical form flabellum is connected, dispersion intensity is improved, powder particles is avoided to be deposited on the bottom of dispersion cylinder 2.The dispersion cylinder 2 be under into
Above go out, ceramic slurry enters dispersion cylinder 2 from the bottom of dispersion cylinder 2, and flows out from the top of dispersion cylinder 2, thus in identical flow velocity
The lower decentralized processing time for extending ceramic slurry will guarantee that ceramic slurry dispersion is abundant.The sieve for rotating cribellum 3 is 100
Mesh screen, make sieving after ceramic slurry more mix it is uniform.
Embodiment two,
The quality percentage composition (%) of ceramic powder used in the present embodiment see the table below:
Less than 100%, surplus is conventional fossil impurity for the quality percentage composition of upper table ceramic powder.Ablation is mainly
Organic compound combustion amount and carbonate decomposition amount in sintering process.Above-mentioned ultrawhite formula powder, secondary white formula powder and Pu Bai match
Square powder belongs to polishing without toner material.
Step 1, above-mentioned ultrawhite formula powder, secondary white formula powder and Pu Bai formula powder carry out ball milling respectively, are made super
White formula slurry, secondary white formula slurry and Pu Bai are formulated slurry.
Ultrawhite is formulated slurry, secondary white formula slurry and Pu Bai formula slurry and is delivered to the first spray dryer by step 2
Group is spray-dried, and is then sent to the first bag filter connecting with the first spray drying unit and is dusted, is made
Ultrawhite finished product base-material, secondary white finished product base-material and Pu Bai finished product base-material.
Step 3, collects the ceramic feed back of first bag filter, and the ceramic feed back being collected into is stored in the
One recycling filler bin.
Step 4 is added 90 tons of water and 0.036 ton of sodium tripolyphosphate toward slurrying pond 1, and makes sodium tripolyphosphate by stirring
It is completely dissolved into water.
Step 5 extracts 180 tons of ceramic feed backs in the first recycling filler bin, opens the blender in the slurrying pond 1；
Then, flow is poured by the ceramic feed back of electronic scale control, the ceramic feed back speed is made to be homogeneously added into the slurrying pond
1, it is stirred continuously until the ceramic feed back is completely dissolved into water, ceramic slurry is made.
Suitable quantity of water is added toward ceramic slurry in step 6, and the flow velocity for adjusting ceramic slurry reaches: when 100ml volts of cup outflows
Between 42s；Then, ceramic slurry adjusted dispersion cylinder 2 is delivered to disperse.
Step 7, the ceramic slurry after dispersion is transported to rotate through sieves with 100 mesh sieve net in cribellum 3, then will be after sieving
Ceramic slurry be delivered to iron remover 8 carry out except iron handle.
Step 8, detection carry out composition detection except the ceramic slurry after iron, and by composition detection result and ultrawhite be formulated into
Row comparison obtains component difference data, is adjusted according to the component difference data to the ingredient of ceramic slurry, makes ceramic slurry
The ingredient of material is consistent with ultrawhite formula.
Step 9, to through step 8, treated that ceramic slurry is spray-dried, the pottery after then weighing spray drying
8 kilograms of porcelain feed back and 92 kilograms of ultrawhite finished product base-material is weighed, that is, 8% incorporation by mass percentage of the ceramic feed back after being spray-dried
Into ultrawhite finished product base-material, so that prefabrication base-material be made.
Prefabrication base-material is made adobe and is burnt by step 10, and a batch preformed bricks are made；Then it detects described prefabricated
Water absorption rate, flexural strength, flatness, thermal shock resistance and the hysteresis set situation of brick, testing result are preformed bricks surfacing, are inhaled
Water rate is 0.01~0.05, flexural strength 39.6MPa, is not split for 160 degree to 25 degree of thermal shock resistance 10 times, lag change after 48 hours
Shape is less than 0.05mm, and the performance of the preformed bricks reaches national product standard requirements, can carry out the batch production of ceramic.
Embodiment three,
The quality percentage composition (%) of ceramic powder used in the present embodiment see the table below:
Less than 100%, surplus is conventional fossil impurity for the quality percentage composition of upper table ceramic powder.Ablation is mainly
Organic compound combustion amount and carbonate decomposition amount in sintering process.The colorant is the colorant of same color.Above-mentioned color one is matched
Square powder, color two are formulated powder and color three is formulated powder and belongs to polish light powder.
Step 1, above-mentioned color one is formulated powder, color two is formulated powder and color three is formulated powder and carries out ball milling respectively, and color is made
One formula slurry, color two are formulated slurry and color three is formulated slurry.
Color one is formulated slurry by step 2, color two is formulated slurry and color three is formulated slurry and is delivered to the second spray dryer
Group is spray-dried, and is then sent to the second bag filter connecting with the second spray drying unit and is dusted, is made
Three finished product base-material of one finished product base-material of color, two finished product base-material of color and color.
Step 3, collects the ceramic feed back of second bag filter, and the ceramic feed back being collected into is stored in the
Two recycling filler bins.
Step 4 is added 66 tons of water and 0.0265 ton of sodium tripolyphosphate toward slurrying pond 1, and makes sodium tripolyphosphate by stirring
It is completely dissolved into water.
Step 5 extracts 130 tons of ceramic feed backs in the second recycling filler bin, opens the blender in the slurrying pond 1；
Then, flow is poured by the ceramic feed back of electronic scale control, the ceramic feed back speed is made to be homogeneously added into the slurrying pond
1, it is stirred continuously until the ceramic feed back is completely dissolved into water, ceramic slurry is made.
Suitable quantity of water is added toward ceramic slurry in step 6, and the flow velocity for adjusting ceramic slurry reaches: when 100ml volts of cup outflows
Between 36s；Then, ceramic slurry adjusted dispersion cylinder 2 is delivered to disperse.
Step 7, the ceramic slurry after dispersion is transported to rotate through sieves with 100 mesh sieve net in cribellum 3, then will be after sieving
Ceramic slurry be delivered to iron remover 8 carry out except iron handle.
Step 8, detection carry out composition detection except the ceramic slurry after iron, and by composition detection result and color one be formulated into
Row comparison obtains component difference data, is adjusted according to the component difference data to the ingredient of ceramic slurry, makes ceramic slurry
The ingredient of material is formulated consistent with color one.
Step 9, to through step 8, treated that ceramic slurry is spray-dried, the pottery after then weighing spray drying
5 kilograms of porcelain feed back and 95 kilograms of one finished product base-material of color is weighed, that is, 5% incorporation by mass percentage of the ceramic feed back after being spray-dried
Into one finished product base-material of color, so that prefabrication base-material be made.
Prefabrication base-material is made adobe and is burnt by step 10, and a batch preformed bricks are made；Then it detects described prefabricated
Water absorption rate, flexural strength, flatness, thermal shock resistance and the hysteresis set situation of brick, testing result are preformed bricks surfacing, are inhaled
Water rate is 0.01~0.04, flexural strength 38.8MPa, is not split for 160 degree to 25 degree of thermal shock resistance 10 times, lag change after 48 hours
Shape is less than 0.05mm, and the performance of the preformed bricks reaches national product standard requirements, can carry out the batch production of ceramic.
Example IV,
The quality percentage composition (%) of ceramic powder used in the present embodiment see the table below:
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | K2O | Na2O | Ablation | |
| Formula modelled after an antique | 66.98 | 20.63 | 0.44 | 0.15 | 0.18 | 0.87 | 1.91 | 3.47 | 5.42 |
The other compositions of upper table ceramic powder are conventional fossil impurity.The ablation mainly organic compound combustion in sintering process
Amount and carbonate decomposition amount.Above-mentioned formula powder modelled after an antique belongs to no toner material modelled after an antique.
Step 1, above-mentioned formula powder modelled after an antique carry out ball milling, formula slurry modelled after an antique are made.
Step 2, by formula slurry modelled after an antique be delivered to third spray drying unit be spray-dried, be then sent to
The third bag filter of third spray drying unit connection is dusted, and finished product base-material modelled after an antique is made.
Step 3 collects the ceramic feed back of the third bag filter, and the ceramic feed back being collected into is stored in
Three recycling filler bins.
Step 4 is added 90 tons of water and 0.036 ton of sodium tripolyphosphate toward slurrying pond 1, and makes sodium tripolyphosphate by stirring
It is completely dissolved into water.
Step 5 extracts 180 tons of ceramic feed backs in third recycling filler bin, opens the blender in the slurrying pond 1；
Then, flow is poured by the ceramic feed back of electronic scale control, the ceramic feed back speed is made to be homogeneously added into the slurrying pond
1, it is stirred continuously until the ceramic feed back is completely dissolved into water, ceramic slurry is made.
Suitable quantity of water is added toward ceramic slurry in step 6, and the flow velocity for adjusting ceramic slurry reaches: when 100ml volts of cup outflows
Between 45s；Then, ceramic slurry adjusted dispersion cylinder 2 is delivered to disperse.
Step 7, the ceramic slurry after dispersion is transported to rotate through sieves with 100 mesh sieve net in cribellum 3, then will be after sieving
Ceramic slurry be delivered to iron remover 8 carry out except iron handle.
Step 8, detection carry out composition detection except the ceramic slurry after iron, and by composition detection result and it is modelled after an antique be formulated into
Row comparison obtains component difference data, is adjusted according to the component difference data to the ingredient of ceramic slurry, makes ceramic slurry
The ingredient of material is consistent with formula modelled after an antique.
Step 9, to through step 8, treated that ceramic slurry is spray-dried, the pottery after then weighing spray drying
12 kilograms of porcelain feed back and 88 kilograms of finished product base-material modelled after an antique are weighed, that is, the ceramic feed back after being spray-dried 12% is mixed by mass percentage
Enter into finished product base-material modelled after an antique, so that prefabrication base-material be made.
Prefabrication base-material is made adobe and is burnt by step 10, and a batch preformed bricks are made；Then it detects described prefabricated
Water absorption rate, flexural strength, flatness, thermal shock resistance and the hysteresis set situation of brick, testing result are preformed bricks surfacing, are inhaled
Water rate is 0.01~0.04, flexural strength 41.8MPa, is not split for 160 degree to 25 degree of thermal shock resistance 10 times, lag change after 48 hours
Shape is less than 0.05mm, and the performance of the preformed bricks reaches national product standard requirements, can carry out the batch production of ceramic.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (8)
1. a kind of method of powder classification recycling and reusing, which comprises the following steps:
Step A classifies to ceramic powder according to the color after the chemical component and firing after drying, different classes of ceramics
Powder classification carries out finished product base-material after spray drying and dedusting, and by the ceramic powder being collected into after dedusting according to classification
It stores classifiedly, defining the ceramic powder being collected into after dedusting is ceramic feed back；
Step B extracts same category of ceramic feed back and slurry is made；
Step C will be made the ceramic feed back after slurry and carry out dispersion sieving in step B；
Step D, to through step C treated ceramic feed back carries out composition detection, and by composition detection result and corresponding finished product
Base material formulation, which compares, obtains component difference data, is adjusted according to the component difference data to the ingredient of ceramic feed back
It is whole, keep the ingredient of ceramic feed back consistent with corresponding finished product base material formulation；
Step E to through step D, treated that ceramic feed back is spray-dried, and the ceramic feed back after spray drying is mixed
Into finished product base-material made from step A, ceramic is produced；
The step E further includes prefabrication detection:
Ceramic feed back after spray drying is incorporated into finished product base-material made from step A by step E1, so that prefabrication base be made
The incorporation of material, the ceramics feed back is 5%~12% by mass percentage；
Prefabrication base-material in step E1 is pressed into adobe and is burnt by step E2, and preformed bricks are made；
Step E3 detects the performance indexes of the preformed bricks, if all properties index of the preformed bricks all reaches production
It is required that can then carry out the batch production of ceramic；If the preformed bricks have one or more performance indicators to be not up to production requirement
The incorporation of the ceramic feed back is then adjusted, newly formed preformed bricks of laying equal stress on carry out detection until up to standard.
2. the method for powder classification recycling and reusing according to claim 1, it is characterised in that: in the step D, adjustment
When contain plastic mud material into the raw material that ceramic feed back is added.
3. the method for powder classification recycling and reusing according to claim 1, which is characterized in that the step B specifically:
Step B1, according to mass percent: ceramic feed back 64%~67%, water 33%~36% weigh same category of ceramics
Feed back and water；
The weighed water of step B1 is added toward slurrying pond in step B2；Then according to mass percent: sodium tripolyphosphate 0.04%
~0.06%, water 99.94%~99.96% is added sodium tripolyphosphate toward slurrying pond and stirs evenly；
Step B3 is added the weighed ceramic feed back of the step B1 toward slurrying pond and stirs evenly, ceramic slurry is made.
4. the method for powder classification recycling and reusing according to claim 3, which is characterized in that the step C specifically:
Step C1 is added suitable quantity of water toward ceramic slurry made from step B, is reached with adjusting the flow velocity of ceramic slurry: 100ml volts
Cup delivery time 35s~45s；
Step C2 will be transported to dispersion cylinder through step C1 ceramic slurry adjusted and disperse；
Step C3, the ceramic slurry after dispersion is transported to rotate through sieves with 100 mesh sieve net in cribellum.
5. the method for powder classification recycling and reusing according to claim 4, which is characterized in that the step C further include:
Step C4 handle except iron to the ceramic slurry after sieving.
6. the method for powder classification recycling and reusing according to claim 1, it is characterised in that: in the step A, according to
Ceramic powder is divided into and polishes without toner material, polishes light powder, modelled after an antique by the color after chemical component and firing after drying
No toner material, be of little use powder and dark powder；
For powder and the dark powder of being of little use, collected ceramics feed back is directly squeezed into mud cake；
For polishing without toner material, the light powder of polishing and no toner material modelled after an antique, collected ceramics feed back is recycled again
It utilizes, that is, carries out the processing of the step B to step E.
7. the recovery system of the method for powder classification recycling and reusing according to claim 5, it is characterised in that: from upstream
Successively include to downstream ball milling unit, spray drying unit, bag dust removal unit, recycling filler bin group, slurrying pond, dispersion cylinder,
Rotated cribellum and iron remover；
The ball milling unit includes more table grinders, and the spray drying unit includes multiple spray drying units, the cloth bag
Dust removing units include multiple bag filters, and the recycling filler bin group includes multiple recycling filler bins；
Multiple spray dryers in the same spray drying unit connect the same bag filter.
8. the recovery system of the method for powder classification recycling and reusing according to claim 7, it is characterised in that: describedization
The inside of stock tank and dispersion cylinder is equipped with blender；
The feed inlet of the dispersion cylinder is set to the bottom of the dispersion cylinder, and the discharge port of the dispersion cylinder is set to the dispersion
The top of cylinder；
The sieve for rotating cribellum is 100 mesh screens.
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