CN110216777A - Dry-pressing formed Ceramic Tiles green body production technology - Google Patents
Dry-pressing formed Ceramic Tiles green body production technology Download PDFInfo
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- CN110216777A CN110216777A CN201910534221.XA CN201910534221A CN110216777A CN 110216777 A CN110216777 A CN 110216777A CN 201910534221 A CN201910534221 A CN 201910534221A CN 110216777 A CN110216777 A CN 110216777A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a kind of dry-pressing formed Ceramic Tiles green body production technologies, include the following steps S1, charging stockpiling, homogenizing；S2, ingredient；S3, grinding；S4, storage, homogenizing；S5, removal of impurities, iron is removed；S6, granulation；S7, material grain storage；S8, material grain are pressed into green body；S9, body drying.The present invention is according to above-mentioned dry-pressing formed Ceramic Tiles green body production technology, uniform moisture inside and outside the pellet after being granulated using dry method flouring technology, and the process of inside and outside uniform moisture need to be reached through aging by saving conventional wet granulation pellet；Simultaneously by being homogenized into factory, the detection of dry powder storage homogenizing cooperation weight item, feedback, solve domestic a variety of ceramic raw materials homogenizing problems, ensure that the equalization stable of subsequent production link raw material；And be granulated again through multistage granulation disc after realizing that two-fluid cross-current makes core using cross-current pelletizer, the sphericity and fluidity of non-slurry pelletizing pellet are improved, the problem of potential unsmooth flowing bring yield of subsequent green compact link reduces is reduced.
Description
Technical field
The present invention relates to a kind of ceramic tile production technology more particularly to a kind of dry-pressing formed Ceramic Tiles green body production technologies.
Background technique
Ceramic Tiles are the sheet products for covering wall and ground manufactured by clay and other inorganic non-metallic raw materials,
Ceramic Tiles are at room temperature by extruding or the molding of dry-pressing raw material, and wherein extrusion forming generally uses wet powder-making technique, dry-pressing
Molding generally uses dry method flouring technology；
Wherein, the material pulverizing equipment of wet powder-making technique uses intermittent or continous way wet process ball milling method, grinds
Slurry is aqueous up to 35% or so after mill, and spray-dried tower is dry again and is granulated for the slurry after grinding, and pellet is aqueous after granulation is
5%~7%, then pellet enters ageing tower aging 24~36 hours, enters back into forming press pressing blank；
The material pulverizing equipment of dry method flouring technology uses dry grinding equipment (such as Vertical Mill, Raymond mill), does after grinding
Powder is granulated by pellet granulation equipment (pan-type pelletizer, high speed machine stirring granulating machine), using water as binder, makes dry method powder
Dry powder after mill reunite be it is aqueous in 12% pellet below, pellet drying machine is dried to moisture after 7% or so, and laggard
Enter storage bin storing 6~24 hours, enters back into forming press pressing blank；
Dry-press brick is that mixed powder is placed in mold the compression moulding under certain pressure from the above, is had
The feature that forming speed is fast, yield is big, semi-finished product intensity is high, and dry method flouring technology is than the synthesis skill of conventional wet flouring technology
Can effect 67% or more, the operator in raw material workshop can reduce 50% even more, and the land used in raw material workshop can subtract
Few 60%, exhaust gas discharge reduces 80% or more, water-saving 80%, and fuel 80% is saved in economize on electricity 50%, and does not have to ballstone, ball lining, solution
Aqua, thus the foreseeable following wet powder-making technique that will substitute is widely used by ceramic industry.
But it was found that global ceramic tile yield in 2017 reaches about 14,400,000,000 square metres, wherein China is maximum ceramic tile
Producing country's (11,000,000,000 square meter), China removes Beijing at present, and Tianjin, outside Hong Kong, Macao and Taiwan, there are also 52 Ceramics Enterprises of Isosorbide-5-Nitrae and 3,621 lifes
Producing line, day ceramic tile production capacity is 4503.6 ten thousand square metres, but almost absolutely uses conventional wet flouring technology, every square meter pottery
Ceramic tile needs the raw material of about 20kg, therefore about 200,000,000 tons every year for the treatment of capacity of national ceramic raw material, and the molding that wet processing has
The features such as time is long, speed is slow greatly reduces production efficiency.
Meanwhile because of internal sources ingredient up to more than ten so that traditional dry method flouring technology exist in production it is following
Problem:
1) plurality of raw materials is difficult to be homogenized, and external raw material only has 2~3 kinds, but domestic feed proportioning up to more than ten,
And material composition is extremely unstable, it is very high for the stability requirement of formula；
2) accuracy of continuous metering and the accuracy of ingredient of the up to ten several raw materials in dry production are difficult to protect
Card；
3) research for lacking system process, only studies the Granulation Equipments of dry method powder, not to grinding process, makes
Bring after grain process reform except the serial link such as iron, removal of impurities, press feeding, press grinding tool, press system, body drying into
Row research；
4) mechanical stirring high speed prilling process, pellet hardness is uneven, and blank density is inconsistent after causing green body to suppress, special
When not being relatively high floor tile (Imitation Rock Porcelain Tiles, the Shi matter brick) of porcelain degree in production, caused by subsequent defective become apparent, work excellent rate
It is too big with wet production reduction amplitude, cause overall cost to go up not down；
5) pellet of suspended state granulating method haydite equipment preparation, pellet hardness is uniform, but sphericity is poor, and mobility reduces
30% or more, dusting is serious after storage, and mobility further decreases, and seriously affects press yield.
Summary of the invention
The object of the present invention is to provide a kind of dry-pressing formed Ceramic Tiles green body production technologies, through being made using dry method flouring technology
Uniform moisture inside and outside pellet after grain, the work of inside and outside uniform moisture need to be reached through aging by saving conventional wet granulation pellet
Sequence；Simultaneously by being homogenized into factory, the detection of dry powder storage homogenizing cooperation weight item, feedback, solve domestic a variety of ceramic raw materials
It is homogenized problem, ensure that the equalization stable of subsequent production link raw material；And through realizing that two-fluid intersects using cross-current pelletizer
Stream is granulated through multistage granulation disc again after making core, is improved the sphericity and fluidity of non-slurry pelletizing pellet, is reduced subsequent green compact
The problem of potential unsmooth flowing bring yield of link reduces.
To achieve the above object, the present invention provides a kind of dry-pressing formed Ceramic Tiles green body production technologies, including following step
It is rapid:
S1, charging stockpiling, homogenizing
Impurity first in pre-sifted ceramic raw material agglomerates in broken ceramic raw material, then through side formula stacker in stockpiling area heap
Material, then by side formula scraper reclaimer by stockpiling area feeding, homogenizing, and ceramic raw material is scraped to rubber conveyer, adhesive tape is defeated
It send machine that ceramic raw material is sent to feed bin top, and ceramic raw material is discharged into corresponding feed bin according to the mobility of ceramic raw material
Portion；
S2, ingredient
The transshipment acitivity discharging in bin bottom is set to constant feeder, ceramic raw material is transported to by constant feeder
It is delivered to subsequent processing after material mill conveyer belt mixing, and is set mixed in the material analyzing instrument detection on material mill conveyer belt
Ceramic raw material ingredient, the ingredient that then will test are transmitted to central controller, central controller contrasting detection signal component value and setting
Difference between signal component value, and quantitatively given after the completion of motor speed adjustment according to the motor speed of difference control constant feeder
The weighed signal receiver of weighing-up wave is fed back to central controller until detection signal component value, which is equal to, is set to score value by material machine；
S3, grinding
The ceramic raw material that finishes of compounding is transmitted to chain bucket through material mill conveyer belt, chain bucket is by ceramic raw material
It is promoted to inside Combined powder concentrator through feed inlet, and is set the hot-air mouth at feed inlet and ceramic raw material is dried,
Coarse grain diameter ceramic raw material after combined formula powder concentrator drying, which is fallen into, is ground into dry powder in roll squeezer, then again through chain bucket
It is secondary to be promoted to inside Combined powder concentrator, until the partial size of ceramic raw material reaches the setting value of Combined powder concentrator, it then will pottery
Porcelain raw material is evacuated to bag filter by Combined powder concentrator, then drops down onto screw conveyor, by screw conveyor by ceramic raw material
It is delivered to subsequent processing；
S4, dry powder storage homogenizing
The ceramic raw material of screw conveyor transmission is received by air conveyer flume, and is set and is discharged in air conveyer flume
Electric throttle valve control ceramic raw material at mouthful is recycled to be fed into four homogenizing storehouses, and controls four homogenizing through electric throttle valve
The feed time in library is identical, after ceramic raw material enters homogenizing storehouse, is evenly distributed in homogenizing storehouse through successively opening in the same time
Three inflation points in five inflatable regions of bottom in 30 inflation points are homogenized, and are set after homogenizing and are filled in each
The discharging solenoid valve of gas area bottom opens discharging in the same time, and each discharging solenoid valve is controlled in a recharge cycle
Opening time is sequentially reduced, then the ceramic raw material drawn off is delivered to subsequent processing through air conveyer flume；
S5, removal of impurities, iron is removed
Ceramic raw material is successively cleaned through strong magnetic bar type iron remover and intermediate frequency negative pressure Cloth sieve, except iron, under then entering
One process；
S6, granulation
Successively ceramic raw material is delivered to inside cross-current pelletizer through chain bucket, dry powder accelerating tube and forms parent nucleus,
Then fall into round as a ball granulation on granulation disc, then after fluid-bed drier is dried enter crushing and screening compounding machine screening, be crushed it is laggard
Enter subsequent processing；
S7, material grain storage
Ceramic raw material successively through storing feed bin, be set to storing feed bin bottom end suspended vibrating discharge cone drop down onto quantitatively to
On material machine, into subsequent processing after then compounding machine sieves, is broken after crushing and screening again；
S8, material grain are pressed into green body
Ceramic raw material enters in press die be pressed into green body after enter subsequent processing；
S9, body drying
Green body is dried through expanded letter formula drying machine.
Preferably, by impurity in wave roll screen pre-sifted ceramic raw material in step S1, it is former that crusher machine ceramics are crushed by bell formula
It agglomerates in material.
Preferably, in step S2 ceramic raw material include paste body shape ceramic raw material, powder the one kind of mobility FF value less than 2
Ceramic raw material, powder mobility FF value be more than or equal to 2 and the mobility FF values of the two class ceramic raw materials less than 4, powder is greater than
The mobility FF value of three classes ceramic raw material and powder equal to 4 and less than 10 is more than or equal to 10 four class ceramic raw materials, feed bin pair
It should include the first feed bin, the second feed bin, third feed bin, the 4th feed bin and the 5th feed bin.
Preferably, transshipment acitivity described in step S2 includes the double-shaft spiral feed for being arranged in first feed bin discharge hole
Machine, the plate-type feeding for being arranged in second feed bin discharge hole, the first rod valve for being arranged in the third feed bin discharge hole,
The activation cone for being arranged in the 4th feed bin discharge hole and the second rod valve for being arranged in the 5th feed bin discharge hole.
Preferably, Combined powder concentrator described in step S3 includes selecting powder along the broad-brimmed rain hat type static state set gradually from top to bottom
The discharge port of machine and dynamic powder concentrator, the broad-brimmed rain hat type static powder separating machine is communicated with the feed inlet of the dynamic powder concentrator, described
The discharge port of dynamic powder concentrator is communicated with the feeding inlet of the roll squeezer.
Preferably, the opening and closing that 30 inflations are put in step S4 is respectively by 30 inflation discharging solenoid valve controls.
Preferably, in step S5 ceramic raw material enter strong magnetic bar type iron remover before also successively through powder hopper, activation
Discharge cone, revolution discharger are measured into closed constant feeder.
It is preferably, arranged in a crossed manner below the feed inlet of cross-current pelletizer described in step S6 that there are two spray gun, granulation discs
Including the level-one granulation disc, second level granulation disc and three-level granulation disc set gradually from top to bottom.
Preferably, the drapery panel of press die described in step S8 is herringbone.
Therefore, the invention has the following advantages that
1, uniform moisture inside and outside the pellet after being granulated using dry method flouring technology, saving conventional wet granulation pellet needs
The process for reaching inside and outside uniform moisture through aging, can save a large amount of ageing tower without the new process of aging direct green compact,
Reduce system investments；
2, by being homogenized into factory, the detection of dry powder storage homogenizing cooperation weight item, feedback, it is former to solve domestic a variety of ceramics
Material homogenizing problem, ensure that the equalization stable of subsequent production link raw material；
3, it is granulated, improves dry through multistage granulation disc again after realizing that two-fluid cross-current makes core using cross-current pelletizer
Method is granulated the sphericity and fluidity of pellet, reduces asking for the potential unsmooth flowing bring yield reduction of subsequent green compact link
Topic；
4, the operator in raw material workshop can be reduced 50% even more, and the land used in raw material workshop can reduce 60%,
Exhaust gas discharge reduces 80% or more, water-saving 80%, and fuel 80% is saved in economize on electricity 50%.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is a kind of flow chart of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 2 is a kind of flow arrangement figure of the S1 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 3 is a kind of flow arrangement figure of the S2 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 4 is a kind of flow arrangement figure of the S3 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 5 is a kind of flow arrangement figure of the S4 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 6 is a kind of flow arrangement figure of the S5 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 7 is a kind of flow arrangement figure of the S6 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 8 is a kind of flow arrangement figure of the S7 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Fig. 9 is a kind of flow arrangement figure of the S8 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention；
Figure 10 is a kind of flow arrangement figure of the S9 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention.
Appended drawing reference: 1, wave roll screen；2, bell formula crusher；3, rubber conveyer；4, side formula stacker；5, formula scraper plate in side takes
Material machine；6, the first feed bin；7, the second feed bin；8, third feed bin；9, the 4th feed bin；10, the 5th feed bin；11, dump car；12,
Constant feeder；13, chain bucket；14, broad-brimmed rain hat type static powder separating machine；15, dynamic powder concentrator；16, roll squeezer；17, pocket type
Dust-precipitator；18, screw conveyor；19, homogenizing storehouse；20, electric throttle valve；21, air conveyer flume；22, inflatable region；23, it unloads
Expect solenoid valve；24, strong magnetic bar type iron remover；25, intermediate frequency negative pressure Cloth sieve；26, dry powder accelerating tube；27, cross-current pelletizer；
28, granulation disc；29, fluid-bed drier；30, crushing and screening compounding machine；31, storing feed bin；32, suspended vibrating discharge cone；33,
Press；34, expanded letter formula drying machine.
Specific embodiment
Below with reference to attached drawing, the invention will be further described, it should be noted that the present embodiment is with this technology side
Premised on case, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to this reality
Apply example.
Fig. 1 is a kind of flow chart of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention, and Fig. 2 is the present invention
A kind of flow arrangement figure of the S1 of dry-pressing formed Ceramic Tiles green body production technology of embodiment, Fig. 3 be the embodiment of the present invention one
The flow arrangement figure of the S2 of the dry-pressing formed Ceramic Tiles green body production technology of kind, Fig. 4 are that the embodiment of the present invention one kind is dry-pressing formed
The flow arrangement figure of the S3 of Ceramic Tiles green body production technology, Fig. 5 are a kind of dry-pressing formed Ceramic Tiles green body of the embodiment of the present invention
The flow arrangement figure of the S4 of production technology, Fig. 6 are a kind of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention
The flow arrangement figure of S5, Fig. 7 are a kind of process cloth of the S6 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention
Figure is set, Fig. 8 is a kind of flow arrangement figure of the S7 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention, and Fig. 9 is
A kind of flow arrangement figure of the S8 of dry-pressing formed Ceramic Tiles green body production technology of the embodiment of the present invention, Figure 10 are reality of the invention
A kind of flow arrangement figure of the S9 of dry-pressing formed Ceramic Tiles green body production technology of example is applied, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6,
Shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10, technique of the invention, comprising the following steps:
S1, charging stockpiling, homogenizing
Impurity first in pre-sifted ceramic raw material agglomerates in broken ceramic raw material, then through side formula stacker in stockpiling area heap
Material, then by side formula scraper reclaimer by stockpiling area feeding, homogenizing, and ceramic raw material is scraped to rubber conveyer, adhesive tape is defeated
It send machine that ceramic raw material is sent to feed bin top, and ceramic raw material is discharged into corresponding feed bin according to the mobility of ceramic raw material
Portion；
By impurity in wave roll screen pre-sifted ceramic raw material in step S1, it is crushed in crusher machine ceramic raw material and is tied by bell formula
Block is set to the dump car on rubber conveyer through corresponding feed bin feed inlet and ceramic raw material is discharged into corresponding feed bin, saves
A large amount of labours；
The rotating arm that step S1 is controlled side formula stacker rotates windrow, then again through side formula scraper reclaimer scraper,
That ceramic raw material is realized during heap feeding overturns preliminary homogenisation into factory.
S2, ingredient
The transshipment acitivity discharging in bin bottom is set to constant feeder, ceramic raw material is transported to by constant feeder
It is delivered to subsequent processing after material mill conveyer belt mixing, and is set mixed in the material analyzing instrument detection on material mill conveyer belt
Ceramic raw material ingredient, the ingredient that then will test are transmitted to central controller, central controller contrasting detection signal component value and setting
Difference between signal component value, and quantitatively given after the completion of motor speed adjustment according to the motor speed of difference control constant feeder
The weighed signal receiver of weighing-up wave is fed back to central controller until detection signal component value, which is equal to, is set to score value, phase by material machine
Than in the adjusting control (control mode are as follows: mill tail feeding-sample delivery-sample preparation-artificial chemistry analysis-of traditional hysteresis mode
Control adjustment burden balance, such analysis mode are seriously lagged, are lagged 6~24 hours under normal circumstances), herein described material point
Analyzer can online in 1~5 minute detection enter and leave mill mixture chemical component (such as CaO, SiO2, Al2O3, Fe2O3, MgO,
NaO, K2O, SO3 etc.), and then adjust through central controller each raw material blanking proportion in real time, make to obtain the SiO2 of mill ceramic raw material,
Al2O3, NaO, K2O ensure that the accurate of dry method powder raw material ingredient substantially close to setting value；
Ceramic raw material includes that one kind ceramics of the mobility FF value of paste body shape ceramic raw material, powder less than 2 are former in step S2
Material, powder mobility FF value be more than or equal to 2 and the two class ceramic raw materials less than 4, powder mobility FF value be more than or equal to 4 and
The mobility FF value of three classes ceramic raw material and powder less than 10 is more than or equal to 10 four class ceramic raw materials, and it includes that feed bin is corresponding
One feed bin, the second feed bin, third feed bin, the 4th feed bin and the 5th feed bin；Transshipment acitivity described in step S2 includes being arranged in institute
It states the double-shaft spiral batcher of the first feed bin discharge hole, the plate-type feeding for being arranged in second feed bin discharge hole, be arranged in
First rod valve of the third feed bin discharge hole, the activation cone for being arranged in the 4th feed bin discharge hole and it is arranged in described the
Second rod valve of five feed bin discharge holes；
Because of domestic dry-pressing Ceramic Tiles raw material type style are as follows: have plastic one of clay raw materials, there is non-eductive
The quartzy class (non-plastic raw material) and flux raw material of property, wherein the essential mineral in clay has kaolinite class, smectites, Erie
Stone (hydromica) class and least a portion of allophane, and clay mineral ratio in ceramic raw material ingredient is maximum；Quartzy class raw material
Mainly there are vein quartz, sandstone, quartzite, quartz sand；Flux raw material mainly has feldspar, calcite, talcum；Due to one of clay raw materials
As plastic raw material, certain consolidation strength can be generated after material feeding pressure in warehouse, mobility is deteriorated after consolidation, exports in storehouse
It is uneven that place can generate unsmooth discharging, interrupted blanking, discharging, and then not can guarantee the accuracy of continuous batching, the application according to
Different feed bins is arranged for the ceramic raw material of different mobility in flow function；
Specifically, the paste body shapes such as polishing mud, high-moisture black mud that paste body shape ceramic raw material has ceramic tile polishing link to generate
Material, the bulkhead of corresponding first feed bin is 90 ° and is vertically arranged, and discharge port is consistent with the feed inlet of double-shaft spiral batcher,
Storehouse bridging can be prevented, while double-shaft spiral batcher is by hydraulic power Packet driven, when being fed to constant feeder, Ke Yiti
For constant torque, the defect that is had using motor driven compared to traditional (torque variation wave-shaped, once the spy of material
Property change, improving torque is necessarily required to realize by improving revolving speed, and when motor driven only in a revolving speed feelings
The torque that just can achieve the hydraulic motor close to same power under condition, when being more than this revolving speed, torque declines rapidly, very
It is likely to result in the super stream of motor, motor stop jumping), constant torque can be provided when material characteristic variation using hydraulic-driven, run
It is more stable, reliable；The corresponding second feed bin warehouse of a kind of ceramic raw material of the mobility FF value of powder less than 2 is cylindrical,
Hatch Opening is set as ladder-like；The mobility FF value of powder is more than or equal to 2 and the corresponding third feed bin of two class ceramic raw materials less than 4
Hatch Opening length it is identical as warehouse diameter, bulkhead is in 90 °, and Hatch Opening is funnel type, and between Hatch Opening and bulkhead >=75 °, powder
Mobility FF value, which is more than or equal at 4 and the corresponding 4th feed bin Hatch Opening of three classes ceramic raw material less than 10, is provided with activation discharging
Cone；Four class ceramic raw materials corresponding fiveth feed bin orlop of the mobility FF value of powder more than or equal to 10 is pyramidal structure, can be prevented
Only material is built bridge in flow process, and pyramidal structure bottom is equipped with suspended vibrating discharge cone, it is ensured that feed is continuous；And it is logical
The discharge port crossed in the third feed bin, the 4th feed bin and the 5th feed bin arranges chain scraper conveyor, has rigidity by force,
The advantages that biggish material is pressed in storehouse can be born, while its surface is carrier bar, material web discharging bin in storehouse can be overcome belt feeder
Carrying roller intensity is inadequate when metering, when strip the problem of belt slippage；
S3, grinding
The ceramic raw material that finishes of compounding is transmitted to chain bucket through material mill conveyer belt, chain bucket is by ceramic raw material
It is promoted to inside Combined powder concentrator through feed inlet, and is set the hot-air mouth at feed inlet and ceramic raw material is dried,
Coarse grain diameter ceramic raw material after combined formula powder concentrator drying, which is fallen into, is ground into dry powder in roll squeezer, then again through chain bucket
It is secondary to be promoted to inside Combined powder concentrator, until the partial size of ceramic raw material reaches the setting value of Combined powder concentrator, it then will pottery
Porcelain raw material is evacuated to bag filter by Combined powder concentrator, then drops down onto screw conveyor, by screw conveyor by ceramic raw material
It is delivered to subsequent processing；
Combined powder concentrator described in step S3 includes along the broad-brimmed rain hat type static powder separating machine set gradually from top to bottom and moving
The discharge port of state powder concentrator, the broad-brimmed rain hat type static powder separating machine is communicated with the feed inlet of the dynamic powder concentrator, the dynamic choosing
The discharge port of powder machine is communicated with the feeding inlet of the roll squeezer；
It has the advantage that
Using elevator come improving material, compared with tradition is using the Vertical Mill of gas lift material, ventilation resistance is smaller, wind
Electromechanics consumption is lower；
The Combined powder concentrator of use is equipped with hot wind inlet near gating location, the material to high humidity can carry out in time
Drying solves the problems, such as materials from bonding, while strong magnetic sheet formula iron remover on the downside of the tapering of broad-brimmed rain hat type static powder separating machine, can remove
Armco magnetic iron (fe, ferroso-ferric oxide) and then protection roll surface of roller press in material after drying is not damaged.
S4, dry powder storage homogenizing
The ceramic raw material of screw conveyor transmission is received by air conveyer flume, and is set and is discharged in air conveyer flume
Electric throttle valve control ceramic raw material at mouthful is recycled to be fed into four homogenizing storehouses, and controls four homogenizing through electric throttle valve
The feed time in library is identical, after ceramic raw material enters homogenizing storehouse, is evenly distributed in homogenizing storehouse through successively opening in the same time
Three inflation points in five inflatable regions of bottom in 30 inflation points are homogenized, and are set after homogenizing and are filled in each
The discharging solenoid valve of gas area bottom opens discharging in the same time, and each discharging solenoid valve is controlled in a recharge cycle
Opening time is sequentially reduced, then the ceramic raw material drawn off is delivered to subsequent processing through air conveyer flume；
The opening and closing of 30 inflation points is respectively by 30 inflation discharging solenoid valve controls in step S4；
The cutting of dry powder layer is realized by above-mentioned control, and be set to the inflatable region of homogenizing storehouse bottom can also by library compared with
The dry powder of lower position is effectively mixed；It is sequentially reduced simultaneously through controlling the opening time of discharging solenoid valve, so that dry powder powder
The difference of retention time, improves the dry powder distribution that homogenizing storehouse enters 5 inflatable regions, and the difference of retention time causes in office
Enter the bed of material of homogenizing storehouse in the time what assumes, can be broken due to dry powder to moving under library, the bed of material of any hypothesis is all
By by a large amount of, different chemical composition dry powder blend, therefore the irregular variation of dry powder powder chemical component is significantly reduced,
Obtain be equalization stable dry powder.
S5, removal of impurities, iron is removed
Ceramic raw material is successively cleaned through strong magnetic bar type iron remover and intermediate frequency negative pressure Cloth sieve, except iron, under then entering
One process；
In step S5 ceramic raw material enter strong magnetic bar type iron remover before also successively through powder hopper, activation discharge cone,
Discharger is turned round to measure into closed constant feeder.
S6, granulation
Successively ceramic raw material is delivered to inside cross-current pelletizer through chain bucket, dry powder accelerating tube and forms parent nucleus,
Then fall into round as a ball granulation on granulation disc, then after fluid-bed drier is dried enter crushing and screening compounding machine screening, be crushed it is laggard
Enter subsequent processing；
Arranged in a crossed manner below the feed inlet of cross-current pelletizer described in step S6 there are two spray guns, and granulation disc includes by upper
Level-one granulation disc, second level granulation disc and the three-level granulation disc set gradually under；
It is had the advantage that using above-mentioned cross-current pelletizer
1, powder is accelerated through dry powder accelerating tube, the dry powder after accelerated motion and is set at the top of pelletizer
Three layers of disperser collision disperse after slowing down, and dry powder is evenly distributed in the hemispheric upper housing of pelletizer；
2, through arranged in a crossed manner there are two spray gun below the feed inlet of cross-current pelletizer, and spray gun spray nozzle is upward, can make
Intersection-type collision flowing is presented with the dry powder trickled down from top in the solution of the atomized water or grain auxiliary agent that must spray, forms parent nucleus；
3, three-level granulation disc is used below pelletizer, and round as a ball, reinforcing is carried out to the pellet of tenesmus to granulation disc, increases grain
The sphericity and intensity of material.
S7, material grain storage
Ceramic raw material successively through storing feed bin, be set to storing feed bin bottom end suspended vibrating discharge cone drop down onto quantitatively to
On material machine, into subsequent processing after then compounding machine sieves, is broken after crushing and screening again；
Above-mentioned storing feed bin has the advantage that
1, being relatively large in diameter of storing feed bin, height are lower, and are set as double outlets, reduce storehouse pressure, can be relieved pellet and exist
The problem of storehouse pressure agglomeration；
2, double exits are respectively provided with vibration activation feed cone, solve that pellet mobility is relatively poor, and discharging is unsmooth and disconnected
Continuous problem.
The characteristics of powder ball is easily formed for granulating method pellet develops the grain after a kind of suitable dry-pressing Ceramic Tiles raw material is granulated
Expect meeting requirement of the press to pellet uniformity into the screening before press, crushing process after storing simultaneously, greatly reducing
The feed back amount of powder ball reduces production cost
S8, material grain are pressed into green body
Ceramic raw material enters in press die be pressed into green body after enter subsequent processing；
The drapery panel of press die described in step S8 is herringbone, can avoid bridging phenomenon.
S9, body drying
Green body is dried through expanded letter formula drying machine.
Because the above-mentioned equipment being related to only is to realize above-mentioned function, structure and control principle can there are many forms, and simultaneously
It is not present invention point, therefore this will not be repeated here.
Therefore, the present invention is according to above-mentioned dry-pressing formed Ceramic Tiles green body production technology, through being granulated using dry method flouring technology
Uniform moisture inside and outside pellet afterwards, the process of inside and outside uniform moisture need to be reached through aging by saving conventional wet granulation pellet；
Simultaneously by being homogenized into factory, the detection of dry powder storage homogenizing cooperation weight item, feedback, solve domestic a variety of ceramic raw materials homogenizing
Problem ensure that the equalization stable of subsequent production link raw material；And through realizing that two-fluid cross-current is made using cross-current pelletizer
It is granulated again through multistage granulation disc after core, improves the sphericity and fluidity of non-slurry pelletizing pellet, reduce subsequent green compact link
The problem of potential unsmooth flowing bring yield reduces.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited,
Although the present invention is described in detail with reference to preferred embodiments, those skilled in the art should understand that: its according to
So can be with modification or equivalent replacement of the technical solution of the present invention are made, and these modifications or equivalent replacement cannot also make to repair
Technical solution after changing is detached from the spirit and scope of technical solution of the present invention.
Claims (9)
1. a kind of dry-pressing formed Ceramic Tiles green body production technology, it is characterised in that: the following steps are included:
S1, charging stockpiling, homogenizing
Impurity first in pre-sifted ceramic raw material agglomerates in broken ceramic raw material, then through side formula stacker in stockpiling area windrow, then
By side formula scraper reclaimer by stockpiling area feeding, homogenizing, and ceramic raw material is scraped to rubber conveyer, rubber conveyer will
Ceramic raw material is sent to feed bin top, and ceramic raw material is discharged into inside corresponding feed bin according to the mobility of ceramic raw material；
S2, ingredient
The transshipment acitivity discharging in bin bottom is set to constant feeder, ceramic raw material is transported to material mill by constant feeder
It is delivered to subsequent processing after conveyer belt mixing, and is set and detects mixed ceramics in the material analyzing instrument on material mill conveyer belt
Material composition, the ingredient that then will test are transmitted to central controller, central controller contrasting detection signal component value and set component
Difference between value, and according to the motor speed of difference control constant feeder, after the completion of motor speed adjustment, constant feeder
The weighed signal receiver of weighing-up wave is fed back into central controller until detection signal component value, which is equal to, is set to score value；
S3, grinding
The ceramic raw material that finishes of compounding is transmitted to chain bucket through material mill conveyer belt, chain bucket by ceramic raw material pass through into
Material mouth is promoted to inside Combined powder concentrator, and is set the hot-air mouth at feed inlet and is dried to ceramic raw material, through group
Coarse grain diameter ceramic raw material after box-like powder concentrator drying, which is fallen into, is ground into dry powder in roll squeezer, then mention again through chain bucket
It rises to inside Combined powder concentrator, until the partial size of ceramic raw material reaches the setting value of Combined powder concentrator, it then will be ceramic former
Material is evacuated to bag filter by Combined powder concentrator, then drops down onto screw conveyor, is conveyed ceramic raw material by screw conveyor
To subsequent processing；
S4, dry powder storage homogenizing
The ceramic raw material of screw conveyor transmission is received by air conveyer flume, and is set in air conveyer flume discharge outlet
Electric throttle valve control ceramic raw material recycle and fed into four homogenizing storehouses, and control four homogenizing storehouses through electric throttle valve
Feed time is identical, after ceramic raw material enters homogenizing storehouse, is evenly distributed in homogenizing storehouse bottom through successively opening in the same time
Five inflatable regions in 30 inflation point in three inflation points be homogenized, be set after homogenizing in each inflatable region
The discharging solenoid valve of bottom opens discharging in the same time, and the unlatching of each discharging solenoid valve is controlled in a recharge cycle
Time is sequentially reduced, then the ceramic raw material drawn off is delivered to subsequent processing through air conveyer flume；
S5, removal of impurities, iron is removed
Ceramic raw material is successively cleaned through strong magnetic bar type iron remover and intermediate frequency negative pressure Cloth sieve, except iron, and next work is then entered
Sequence；
S6, granulation
Successively ceramic raw material is delivered to inside cross-current pelletizer through chain bucket, dry powder accelerating tube and forms parent nucleus, then
Fall into round as a ball granulation on granulation disc, then enter after fluid-bed drier is dried the screening of crushing and screening compounding machine, it is broken after enter under
One process；
S7, material grain storage
Ceramic raw material successively drops down onto constant feeder through storing feed bin, the suspended vibrating discharge cone for being set to storing feed bin bottom end
On, into subsequent processing after then compounding machine sieves, is broken after crushing and screening again；
S8, material grain are pressed into green body
Ceramic raw material enters in press die be pressed into green body after enter subsequent processing；
S9, body drying
Green body is dried through expanded letter formula drying machine.
2. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: lead in step S1
Impurity in wave roll screen pre-sifted ceramic raw material is crossed, is crushed in crusher machine ceramic raw material and is agglomerated by bell formula.
3. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: make pottery in step S2
Porcelain raw material includes the mobility FF value of a kind of ceramic raw material of the mobility FF value of paste body shape ceramic raw material, powder less than 2, powder
The mobility FF value of two class ceramic raw materials, powder more than or equal to 2 and less than 4 is more than or equal to 4 and the three classes ceramics original less than 10
The mobility FF value of material and powder is more than or equal to 10 four class ceramic raw materials, and it includes the first feed bin, the second feed bin, that feed bin is corresponding
Three feed bins, the 4th feed bin and the 5th feed bin.
4. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 3, it is characterised in that institute in step S2
Transshipment acitivity is stated to include the double-shaft spiral batcher for being arranged in first feed bin discharge hole, be arranged in the second feed bin discharging
The plate-type feeding of mouth, is arranged in the 4th feed bin discharge hole at the first rod valve for being arranged in the third feed bin discharge hole
Activation cone and be arranged in the second rod valve of the 5th feed bin discharge hole.
5. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: institute in step S3
Stating Combined powder concentrator includes along the broad-brimmed rain hat type static powder separating machine and dynamic powder concentrator set gradually from top to bottom, the broad-brimmed rain hat type
The discharge port of static powder separating machine is communicated with the feed inlet of the dynamic powder concentrator, the discharge port of the dynamic powder concentrator and the roller
The feeding inlet of press communicates.
6. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: three in step S4
The opening and closing of ten inflation points is respectively by 30 inflation discharging solenoid valve controls.
7. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: in step S5
Ceramic raw material also successively enters through powder hopper, activation discharge cone, revolution discharger closed before entering strong magnetic bar type iron remover
The metering of formula constant feeder.
8. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: institute in step S6
State it is arranged in a crossed manner below the feed inlet of cross-current pelletizer there are two spray guns, granulation disc includes the level-one set gradually from top to bottom
Granulation disc, second level granulation disc and three-level granulation disc.
9. a kind of dry-pressing formed Ceramic Tiles green body production technology according to claim 1, it is characterised in that: institute in step S8
The drapery panel for stating press die is herringbone.
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| CN111391100A (en) * | 2020-03-22 | 2020-07-10 | 河北金汇陶瓷有限公司 | Press feeding device for ceramic dry-process powder making process |
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