CN108101505A - The preparation process of Nixing pottery blank - Google Patents

The preparation process of Nixing pottery blank Download PDF

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Publication number
CN108101505A
CN108101505A CN201711390186.6A CN201711390186A CN108101505A CN 108101505 A CN108101505 A CN 108101505A CN 201711390186 A CN201711390186 A CN 201711390186A CN 108101505 A CN108101505 A CN 108101505A
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CN
China
Prior art keywords
mud
nixing pottery
powder
preparation process
blank
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Pending
Application number
CN201711390186.6A
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Chinese (zh)
Inventor
秦意霞
黄海武
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Qinzhou Huaxia Taijiquan Ningxing Ceramic Art Co Ltd
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Qinzhou Huaxia Taijiquan Ningxing Ceramic Art Co Ltd
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Priority to CN201711390186.6A priority Critical patent/CN108101505A/en
Publication of CN108101505A publication Critical patent/CN108101505A/en
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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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/636—Polysaccharides or derivatives thereof
    • C04B35/6365—Cellulose or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides

Abstract

The invention discloses a kind of preparation processes of Nixing pottery blank, comprise the following steps：1) Nixing pottery mud is taken, adds in the SiC particulate of its weight 0.1 0.5%, co-grinding is first placed under 500 1000MHz and handles 20 25min, is subsequently placed under 100 200GHz and handles 1 3min, obtains clay powder；2) after sodium carboxymethylcellulose being mixed into clay powder, it is sent into dry granulating machine and carries out humidification granulation, obtains the powder that moisture content is 12 15%；3) by powder drying to moisture content for 6~7% to get.The present invention adds in SiC particulate in traditional Nixing pottery mud and with reference to microwave treatment, can obtain that surface is smooth, and regular shape, the spherical particle of good fluidity is suitble to follow-up dry-pressing formed.

Description

The preparation process of Nixing pottery blank
Technical field
The present invention relates to the manufacture crafts of Nixing pottery, and in particular to the preparation process of Nixing pottery blank.
Background technology
Qiezhou Nixing pottery ranks four big name of China with Jiangsu's purple sand ceramics, Yunnan Jian Shui potteries, Sichuan Rongchang County pottery and makes pottery, and enjoys great prestige At home and abroad.Nixing pottery conventional preparation techniques include preparing blank, blank forming, body drying and green body are fired, wherein, base Prepared by material comprises the following steps：1) mud is selected：It is raw material first to select the eastern mud for the Qin Jiang two sides for crossing Qiezhou urban district and western mud, White clay (eastern mud) is distributed mainly on Jiang Yidong areas by the emperor himself, is mostly stored in low lying areas, and external appearance characteristic is soft for compact substance, is glued to be soft Soil；Western mud is distributed in Jiang Yixi by the emperor himself, and matter is hard, and iron-holder is high, and contains micro quartz sand.2) weathering：Because eastern mud is soft and thin, So being unable to air storage after excavating, prevention heavy rain drenches, and mud is avoided to be lost in.And western mud is block hard paste, Necessary air storage, by the sunlight of 4~6 months, the effect frozen by the dissolving of rainwater and water occurred western mud broken It dissipates, dissolve and aoxidizes, achieve the effect that weathering.3) ball milling：Water is added to be put into togerther ball mill (grinding medium eastern mud and western mud in proportion Matter is cobblestone) it is ground and mixes, general 8 hours of ball milling, in order to make mud finer and smoother, Ball-milling Time can be increased.4) Press filtration：40 mesh and 100 mesh filter screens are crossed after ball milling, into sedimentation basin, stands after mud sediment, the clear water on upper strata is drained, then Mud item is made by filter press dehydration in mud；5) vacuum pugging：The air in mud item, mud warp are excluded using vacuum deairing machine After crossing application of vacuum, air content is low, improves plasticity, comprehensive and dry body hardness.6) it is aging：Mud is aging 15 in dark place It allows mud to play serial physical, chemical change in the nonventilated environment of humidity, can obtain the performance of mud up to blank To improvement, such as moisture moistening is uniform, plasticity enhances, mechanical strength increases, and dries in the shade so as to reduce in forming process and green compact Cracking in the process.Blank forming mainly uses the throwing method of forming, slip casting, moulding moulage method, roll forming method, wherein Injection forming and roll forming method are using gypsum mold, and moulding moulage method makees mold using sulphur, and roll forming method and stamp The method of forming uses plastic making blank, and injection forming uses slip casting blank.For traditional Nixing pottery manufacturing process Speech, whether blank preparation section or blank forming process, are all using wet processing, there are process cycle length, green bodies The defects of energy consumption for drying is high with the development of Nixing pottery industrialization, also seems more important to the exploration of short period production technique. It is dry-pressing formed, it is a kind of simple for process, easy to operate, the cycle is short, efficient forming method, but dry-pressing formed for mud The requirement of emerging greenwave material is high, and blank viscosity is too big made from conventional method, and the frictional force between blank is big, and mobility is very poor, Direct dry-pressing is easy to cause molding blank density unevenness one, is extremely unfavorable for being smoothed out for subsequent handling.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation process of Nixing pottery blank, which can improve base The mobility of material, it is suitable dry-pressing formed, Nixing pottery producing efficiency is greatly improved, it is inhomogenous to effectively eliminate molding blank Density Distribution The defects of, that improves molding blank burns till rate.
Technical solution provided by the invention is the preparation process of the blank of Nixing pottery, is comprised the following steps：
1) Nixing pottery mud is taken, adds in the SiC particulate of its weight 0.1-0.5%, co-grinding is first placed in 500- 20-25min is handled under 1000MHz, is subsequently placed under 100-200GHz and handles 1-3min, obtain clay powder；
2) after sodium carboxymethylcellulose being mixed into clay powder, it is sent into dry granulating machine and carries out humidification granulation, obtain Moisture content is the powder of 12-15%；
3) by powder drying to moisture content for 6~7% to get.
In step 1), SiC particulate is mixed into Nixing pottery mud, SiC particulate is handled under the microwave field of 500-1000MHz For 20-25min by phase mutual friction, collision generates substantial amounts of thermal energy, and SiC particulate temperature is made to increase, so as to cause Si-C disconnect with Al in Nixing pottery mud2O3It reacts and generates the Al of pole shape4C3Phase, under the effect of 100-200GHz microwave powers, pole The Al of shape4C3Crystal shape, which changes, becomes the spherulite of more satisfactory spherical shape.The Al of generation4C3Spherulite is attached to Mud particle surface greatly enhances the dispersiveness of Nixing pottery mud particle.And Al4C3Spherulite is very small, emerging for mud Mud of making pottery grain shape also has certain repairing effect so that the powder that dry method is made is rounder and more smooth, regular, further reduces Frictional force between powder.
In step 1), the weight ratio of eastern mud and western mud is 4~6：6~4.The eastern mud is mainly distributed on Jiang Yidong by the emperor himself Domain is mostly stored in low lying areas, and compact substance is soft, is mild-clay, for color to show slightly yellow-white in red, iron-holder is high, and contains Micro quartz sand.Eastern mud plays a part of to adjust plasticity and associativity in the production technology of Nixing pottery.The western mud is main Region to the west of river by the emperor himself is distributed in, based on hillside, compact massive is hard paste, is that a kind of iron-holder is higher on storage ground Purple mudstone, color are aubergine, and superficial layer has a small amount of irony to disseminate, and is hard paste, plasticity and associativity are poor.As excellent The weight ratio of choosing, eastern mud and western mud is 6：4.
In step 2), sodium carboxymethylcellulose belongs to anionic surfactant, mainly with R-COO- anionic forms In the presence of carbochain end absorption at this time is in silicon carbide, and hydrophilic carboxylic acid group is upward.Its molecule long-chain stretches in the solution to be played Steric hindrance acts on, and the reunion between mud particle is prevented along with the electrostatic repulsion double action between carboxylic acid group, so as to Peptizaiton is played in dry powder.
Compared with prior art, the invention has the advantages that：
1) SiC particulate is added in traditional Nixing pottery mud and with reference to microwave treatment, it is smooth to can obtain surface, shape rule Then, the spherical particle of good fluidity is suitble to follow-up dry-pressing formed.
2) addition of sodium carboxymethylcellulose can further enhance the dispersiveness of clay particle.
3) blank of the invention is very suitable for dry-pressing formed, and to can obtain blank density homogeneous into parison through dry-pressing formed Body.Since molding blank density is homogeneous, in follow-up sintering procedure, distortion and cracking are greatly reduced, improves yield rate.
Specific embodiment
The present invention is further elaborated for specific examples below, but not as a limitation of the invention.
Embodiment 1
1) it is by weight 4 to take eastern mud and western mud：6 are mixed to get Nixing pottery mud, add in SiC of its weight 0.1% Grain, co-grinding to 200 mesh are first placed under 500MHz and handle 20min, be subsequently placed under 100GHz and handle 1min, obtain clay Powder；
2) after 0.5% sodium carboxymethylcellulose of its weight being mixed into clay powder, it is sent into dry granulating machine and carries out Humidification is granulated, and obtains the powder that moisture content is 12%；
3) by powder drying to moisture content for 6% to get.
Embodiment 2
1) it is by weight 6 to take eastern mud and western mud：4 are mixed to get Nixing pottery mud, add in SiC of its weight 0.5% Grain, co-grinding to 300 mesh are first placed under 1000MHz and handle 25min, be subsequently placed under 200GHz and handle 3min, obtain clay Powder；
2) after 1% sodium carboxymethylcellulose of its weight being mixed into clay powder, it is sent into dry granulating machine and is increased Wet granulation obtains the powder that moisture content is 15%；
3) by powder drying to moisture content for 7% to get.
Embodiment 3
1) it is by weight 5 to take eastern mud and western mud：5 are mixed to get Nixing pottery mud, add in SiC of its weight 0.25% Grain, co-grinding to 250 mesh are first placed under 800MHz and handle 22min, be subsequently placed under 150GHz and handle 2min, obtain clay Powder；
2) after 0.8% sodium carboxymethylcellulose of its weight being mixed into clay powder, it is sent into dry granulating machine and carries out Humidification is granulated, and obtains the powder that moisture content is 14%；
3) by powder drying to moisture content for 6.5% to get.
Embodiment 4
1) it is by weight 6 to take eastern mud and western mud：4 are mixed to get Nixing pottery mud, add in SiC of its weight 0.1% Grain, co-grinding to 200 mesh are first placed under 1000MHz and handle 20min, be subsequently placed under 200GHz and handle 1min, obtain clay Powder；
2) after 0.5% sodium carboxymethylcellulose of its weight being mixed into clay powder, it is sent into dry granulating machine and carries out Humidification is granulated, and obtains the powder that moisture content is 12%；
3) by powder drying to moisture content for 6% to get.
Reference examples 1
1) it is by weight 6 to take eastern mud and western mud：4 are mixed to get Nixing pottery mud co-grinding to 200 mesh, obtain clay Powder；
2) clay powder is sent into dry granulating machine and carries out humidification granulation, obtain the powder that moisture content is 12%；
3) by powder drying to moisture content for 6% to get.
Reference examples 2
1) it is by weight 6 to take eastern mud and western mud：4 are mixed to get Nixing pottery mud co-grinding to 200 mesh, obtain clay Powder；
2) after 0.5% sodium carboxymethylcellulose of its weight being mixed into clay powder, it is sent into dry granulating machine and carries out Humidification is granulated, and obtains the powder that moisture content is 12%；
3) by powder drying to moisture content for 6% to get.
Reference examples 3
1) it is by weight 6 to take eastern mud and western mud：4 are mixed to get Nixing pottery mud, add in SiC of its weight 0.1% Grain, co-grinding to 200 mesh are first placed under 1000MHz and handle 20min, be subsequently placed under 200GHz and handle 1min, obtain clay Powder；
2) clay powder is sent into dry granulating machine and carries out humidification granulation, obtain the powder that moisture content is 12%；
3) by powder drying to moisture content for 6% to get.
1st, the blank of embodiment and reference examples is subjected to fluidity testing：
The property such as grain composition, shape, surface texture, the porosity of powder, density of the mobility of powder with forming powder Matter is related, in addition the complex relationships such as adhesion strength and internal friction between particle, the mobility of powder can not use single physical property Value is expressed.This experiment characterizes the mobility of blank with the slamp value of blank.The slamp value of blank is to first pass through Intelligent powder tester detects the tablet angle of blank obtained by each group experiment, angle of repose, the degree of compression, neat degree, then utilizes Carr slamp value methods are calculated.More than to survey quadrinomial parameter full marks be 25 parts, according to the size of parameters value Marking summation is carried out with reference to evaluation table and obtains the slamp value of blank, and specific evaluation method see the table below 1, the results are shown in Table 2.
Table 1
Table 2
Group Slamp value adds up to
Embodiment 1 76.5
Embodiment 2 75.6
Embodiment 3 75.4
Embodiment 4 76.3
Reference examples 1 (original powder) 47
Reference examples 2 (original powder+sodium carboxymethylcellulose) 55.8
Reference examples 3 (original powder+SiC particulate) 72.0
2nd, the green body of embodiment and reference examples is carried out burning till rate test：
Example 1~4 and the blank of reference examples 1~3 are packed into metal die cavity respectively, in positive pressure 25MPa Lower compacting 30s, obtains that the green body (a diameter of 30cm is highly 60cm) of medium-sized vase is 100 each, and above-mentioned green body is placed in 1150 Conventional firing is carried out at DEG C, statistics burns till rate respectively, and concrete outcome see the table below：

Claims (5)

1. the preparation process of Nixing pottery blank, it is characterised in that：Comprise the following steps：
1) Nixing pottery mud is taken, adds in the SiC particulate of its weight 0.1-0.5%, co-grinding is first placed under 500-1000MHz 20-25min is handled, is subsequently placed under 100-200GHz and handles 1-3min, obtain clay powder；
2) after sodium carboxymethylcellulose being mixed into clay powder, it is sent into dry granulating machine and carries out humidification granulation, obtain aqueous Rate is the powder of 12-15%；
3) by powder drying to moisture content for 6~7% to get.
2. the preparation process of Nixing pottery blank according to claim 1, it is characterised in that：In step 1), Nixing pottery mud It is made of eastern mud and western mud, weight ratio is 4~6：6~4.
3. the preparation process of Nixing pottery blank according to claim 2, it is characterised in that：The weight ratio of eastern mud and western mud is 6：4.
4. the preparation process of Nixing pottery blank according to claim 1, it is characterised in that：In step 1), co-grinding is extremely 200-300 mesh.
5. the preparation process of Nixing pottery blank according to claim 1, it is characterised in that：In step 2), carboxymethyl cellulose The dosage of plain sodium is the 0.5-1% of clay powder weight.
CN201711390186.6A 2017-12-21 2017-12-21 The preparation process of Nixing pottery blank Pending CN108101505A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110171952A (en) * 2019-04-30 2019-08-27 广西陶匠智能科技有限公司 A kind of clay formula that can improve Nixing pottery 3D printing speed
CN110171954A (en) * 2019-04-30 2019-08-27 北部湾大学 A kind of clay formula of the fine Nixing pottery device of 3D printing
CN110204303A (en) * 2019-04-30 2019-09-06 广西陶匠智能科技有限公司 A kind of clay formula of 3D printing large size Nixing pottery device
CN112358277A (en) * 2020-11-10 2021-02-12 云南省红河哈尼族彝族自治州民族师范学校 Earthenware clay material capable of firing foam jade-like texture and firing method of earthenware thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110171952A (en) * 2019-04-30 2019-08-27 广西陶匠智能科技有限公司 A kind of clay formula that can improve Nixing pottery 3D printing speed
CN110171954A (en) * 2019-04-30 2019-08-27 北部湾大学 A kind of clay formula of the fine Nixing pottery device of 3D printing
CN110204303A (en) * 2019-04-30 2019-09-06 广西陶匠智能科技有限公司 A kind of clay formula of 3D printing large size Nixing pottery device
CN112358277A (en) * 2020-11-10 2021-02-12 云南省红河哈尼族彝族自治州民族师范学校 Earthenware clay material capable of firing foam jade-like texture and firing method of earthenware thereof
CN112358277B (en) * 2020-11-10 2022-09-06 云南省红河哈尼族彝族自治州民族师范学校 Earthenware clay material capable of firing foam jade-like texture and firing method of earthenware thereof

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