CN102166781A - Method for producing attapulgite ceramic pressing process forming blank - Google Patents

Method for producing attapulgite ceramic pressing process forming blank Download PDF

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Publication number
CN102166781A
CN102166781A CN 201010562365 CN201010562365A CN102166781A CN 102166781 A CN102166781 A CN 102166781A CN 201010562365 CN201010562365 CN 201010562365 CN 201010562365 A CN201010562365 A CN 201010562365A CN 102166781 A CN102166781 A CN 102166781A
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China
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ceramic pressing
concavo
sodium
pressing process
ceramic
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CN 201010562365
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CN102166781B (en
Inventor
林光霞
许庆华
柏正基
许盛英
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XUYI COUNTY KEYUAN NEW MATERIAL FACTORY
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XUYI COUNTY KEYUAN NEW MATERIAL FACTORY
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Abstract

The invention discloses a method for producing an attapulgite ceramic pressing process forming blank, which is technically characterized by comprising the steps of: mixing ingredients of the attapulgite ceramic pressing process forming blank and then crushing, adding the crushed mixture in a soaking tank for soaking with water and carrying out sodium treatment, pressing the mixture subjected to soaking and sodium treatment into a sheet, extruding the sheet into a strip, airing and then grinding, removing iron from powder, inputting the powder in a stirrer, adding water for stirring, and uniformly stirring to form a finished product of the attapulgite ceramic pressing process forming blank. The attapulgite ceramic pressing process forming blank comprises attapulgite clay, white bentonite, kaolin, calcined clay, sodium metasilicate and sodium carbonate. The attapulgite ceramic pressing process forming blank has low water content and is compact, has the advantages of better caking property, plasticity, high yield value and large extension deformation, and is suitable for forming and producing ceramic products by adopting a pressing process.

Description

The production method of the ceramic pressing shaping of concavo-convex rod blank
Technical field
The present invention relates to ceramic batch, be specifically related to the producer of the ceramic pressing shaping of a kind of concavo-convex rod blank
Method.
Background technology
The composition of china clay mainly is a kaolin, and contain feldspar, quartz, mica, iron ore and other fragments as the rock in china clay source, china clay is the primary raw material of pottery, developing high-grade household china needs the kaolin of high-quality as raw material, the high speed development of domestic ceramic industry in recent years, kaolinic consumption is also increased severely thereupon, but along with the exhaustion of high grade kaolinite mineral ore, the price of china clay skyrockets day by day.
Under the prerequisite that guarantees the china clay quality, develop new china clay raw material and replace kaolin or reduce kaolinic consumption, to protect our ecological environment,, the high-grade household china of future development guarantees for providing more sufficient raw material.
Pottery pressing forming requirements base substrate moisture is low, the base substrate densification, dry contraction is little, the geomery of product is accurate, and output is big, is convenient to the large-scale production of mechanization, but the raw-material base substrate moisture of some china clay instability newly developed, dry after-contraction is bigger, is easy to generate crackle, directly has influence on the quality of ceramic product.
Summary of the invention
The objective of the invention is to overcome weak point in the prior art, the production method of the ceramic pressing shaping of a kind of concavo-convex rod blank is provided.
The production method of the ceramic pressing shaping of concavo-convex rod blank is: pulverize after the batch mixes with the ceramic pressing shaping of concavo-convex rod blank earlier, and the mixture after will pulverizing adds, and water soaks the sodium processing in the fermentation vat, mixture after the immersion sodium is pressed into tablet, tablet is squeezed into bar, carry out abrasive dust after the airing, powder is carried out deironing, powder imported add water in the mixer and stir, the back that stirs is the finished product of the ceramic pressing shaping of concavo-convex rod blank.
The ceramic pressing shaping of concavo-convex rod blank is made up of Concave-convex clay rod, white bentonite, kaolin, ripe flint clay, sodium metasilicate and sodium carbonate.
Concave-convex clay rod be a kind of layer of chain structure contain Shuifu County's zeopan clay mineral, color is white in color, canescence, cinerous, celadon or weak silky luster, magnesia in the Concave-convex clay rod can weaken in the ceramic base substrate because the yellow that Fe and Ti compound are produced, promote the translucence of porcelain base, improve the mechanical strength of base substrate, the Concave-convex clay rod color that the present invention selects for use is white in color.
Concave-convex clay rod soil property exquisiteness has oily soapy, and light weight, property are crisp, and fracture is conchoidal or irregular shape, and water imbibition is strong, tool viscosity and plasticity when wet, and its viscosity can reach more than the 3000mPas, helps the bonding between the raw material;
Concave-convex clay rod has unique dispersive property, suspension is met dielectric and do not produced flocculation sediment, and dry after-contraction is little, does not produce be full of cracks, and has good, the high temperature resistant and anti-good properties such as saline and alkaline of thixotropy;
Also contain a spot of hydromica, quartz, feldspar, kaolinite, sepiolite and opal in the Concave-convex clay rod, these compositions are used for developing concavo-convex excellent expensive goods and belong to the impurity class, be to need to get rid of through the screening of purifying, and in the present invention, these compositions are the plasticity that helps regulating the ceramic pressing shaping of concavo-convex rod blank, reduce the drying of base substrate and shrink, shorten drying time and prevent blank deformation.
The bentonitic Main Ingredients and Appearance of white is a montmorillonite, be the mineral of the hydrous alumino silicates formation of a kind of layer structure, flaky crystal, the content of iron is less, has the flight of colors of going out and absorption property, also have plasticity and good caking property, in the aqueous solution, be suspension and as a form of gel; Be easy to generate crackle after the bentonite drying, after soaking the sodium modification processing jointly with Concave-convex clay rod in the present invention, can avoid using the ceramic of the ceramic pressing shaping of concavo-convex rod blank production to crack, also help the plasticity of regulating the ceramic pressing shaping of concavo-convex rod blank and improve whiteness.
The kaolin outward appearance is white, light gray isochrome, compact massive or loose earthy, soapy feeling is arranged, the sticking tongue in dry back, water imbibition is arranged, kaolin refractoriness height, the pure kaolin of matter have whiteness height, soft, the easy dispersion suspension of matter in water, good plasticity and caking property, kaolin calcined back look white, and whiteness can reach more than 80%.
Flint clay is the multiple mixture that contains aluminosilicate, main chemical compositions is silica and two kinds of oxides of alundum (Al, ripe flint clay is that the flint clay raw ore forms after high-temperature calcination, ripe flint clay whiteness and luminosity are good, it is even to have quality, compact structure, volume stability, refractory temperature high strength is big, in water, be difficult for disperseing, plasticity is hanged down and characteristics such as water absorption rate is little, ripe in the present invention flint clay is used for improving the content of the alundum (Al of the ceramic pressing shaping of concavo-convex rod blank, it is low to avoid into the porcelain temperature, reduces distortion and raising whiteness that ceramic produces when burning till.
Sodium metasilicate is white powder or crystalline particle, and is soluble in water, and the aqueous solution is alkalescence, can improve the stability of plastic mass in the present invention, prevents to shrink when green compact are dry and the modification cracking, increases green body strength, reduces the green compact breakage rate.
Sodium carbonate is used for that in the present invention the ceramic pressing shaping of concavo-convex rod blank batching is carried out sodium modification to be handled, and can improve the plasticity and the adhesive property of the ceramic pressing shaping of concavo-convex rod blank.
The present invention is achieved by following technical proposals:
1, the production method of the ceramic pressing shaping of concavo-convex rod blank is: (1) with the batch mixes of the ceramic pressing shaping of concavo-convex rod blank after input pulverize in the pulverizer, the compound particles fineness after the pulverizing is less than 0.25 millimeter; (2) mixture after will pulverizing adds in the fermentation vat water and soaks sodium and be treated to moistening shape mixture, soaks the sodium time to be controlled at 1~10 day; (3) will be pressed into tablet in the moistening shape mixture input twin rollers, the thickness of tablet is less than 3 millimeters; (4) tablet is imported be squeezed into cylindrical strip thing in the extruder, the diameter of cylindrical strip thing is controlled at 2~10 millimeters, and (5) are input to the cement threshing ground with cylindrical strip thing and carry out airing, and the cylindrical strip thing water content after the airing is less than 15%; (6) will carry out abrasive dust in the cylindrical strip thing input grinding machine after the airing, and in the meal outlet access pipeline self-tipping type permanent-magnetic iron expeller with grinding machine, powder to abrasive dust output carries out deironing, the grain fineness of powder is less than 0.044 millimeter, (7) stir adding water in the input of the powder after the deironing mixer, be the finished product of the ceramic pressing shaping of concavo-convex rod blank after stirring, the finished product moisture content is controlled at 5%~18%.
The batching of the ceramic pressing shaping of described concavo-convex rod blank is made up of following component by weight percentage: Concave-convex clay rod 45~65%, white bentonite 10~30%, kaolin 5~20%, ripe flint clay 5~20%, sodium carbonate 0.1~3% and sodium metasilicate 0.1~3%.
The batching that described immersion sodium is handled is made up of following component by weight percentage: mixture 55~75% after the pulverizing and water 25~45%.
The batching of the ceramic pressing shaping of concavo-convex rod blank is handled through soaking sodium, after being pressed into tablet and being squeezed into bar, its internal microstructure is by " bulking ", and form micro-gap and crack, thereby moisture is entered wherein easily, cause microstructural hydration swelling, so that the dispersion of under weak dispersion condition, just can in medium, disintegrating, form viscosity higher, guarantee all even structure unanimity of moisture in the blank, can also strengthen the old effect of the ceramic pressing shaping of concavo-convex rod blank, improve the osmotic pressure of ion between porcelain mud particle, improve the plasticity of the ceramic pressing shaping of concavo-convex rod blank, high and the extensional amount of yield value.
Moisture is low in the ceramic pressing shaping of the concavo-convex rod blank, the base substrate densification, have good caking property, plasticity, yield value height and the big characteristics of extensional amount, the ceramic that uses the ceramic pressing shaping of concavo-convex rod blank to produce has that shrinkage factor is little, indeformable, intensity is good and the characteristics of quality homogeneous.
Adopt pipeline self-tipping type permanent-magnetic iron expeller that powder is carried out deironing, can effectively improve the whiteness of the ceramic pressing shaping of concavo-convex rod blank.
The production method technology of the ceramic pressing shaping of concavo-convex rod blank is simple, low production cost, and product quality reaches the relevant technologies standard,
The ceramic pressing shaping of concavo-convex rod blank is applicable to pressing shaping production ceramic.
The specific embodiment
The invention will be further described below in conjunction with embodiment:
1, the production method of the ceramic pressing shaping of concavo-convex rod blank is: (1) with the batch mixes of the ceramic pressing shaping of concavo-convex rod blank after input pulverize in the pulverizer, the compound particles fineness after the pulverizing is less than 0.25 millimeter; (2) mixture after will pulverizing adds in the fermentation vat water and soaks sodium and be treated to moistening shape mixture, soaks the sodium time to be controlled at 6 days; (3) will be pressed into tablet in the moistening shape mixture input twin rollers, the thickness of tablet is less than 3 millimeters; (4) tablet is imported be squeezed into cylindrical strip thing in the extruder, the diameter of cylindrical strip thing is controlled at 3 millimeters, and (5) are input to the cement threshing ground with cylindrical strip thing and carry out airing, and the cylindrical strip thing water content after the airing is less than 15%; (6) will carry out abrasive dust in the cylindrical strip thing input grinding machine after the airing, and in the meal outlet access pipeline self-tipping type permanent-magnetic iron expeller with grinding machine, powder to abrasive dust output carries out deironing, the grain fineness of powder is less than 0.044 millimeter, (7) stir adding water in the input of the powder after the deironing mixer, be the finished product of the ceramic pressing shaping of concavo-convex rod blank after stirring, the finished product moisture content is controlled at 6%~14%.
The batching of the ceramic pressing shaping of described concavo-convex rod blank is made up of following component by weight percentage: Concave-convex clay rod 52%, white bentonite 22%, kaolin 16%, ripe flint clay 8%, sodium carbonate 1.2% and sodium metasilicate 0.8%.
The batching that described immersion sodium is handled is made up of following component by weight percentage: mixture 60% after the pulverizing and water 40%.

Claims (1)

1. the production method of the ceramic pressing shaping of a concavo-convex rod blank is characterized in that, (1) with the batch mixes of the ceramic pressing shaping of concavo-convex rod blank after input pulverize in the pulverizer, the compound particles fineness after the pulverizing is less than 0.25 millimeter; (2) mixture after will pulverizing adds in the fermentation vat water and soaks sodium and be treated to moistening shape mixture, soaks the sodium time to be controlled at 1~10 day; (3) will be pressed into tablet in the moistening shape mixture input twin rollers, the thickness of tablet is less than 3 millimeters; (4) tablet is imported be squeezed into cylindrical strip thing in the extruder, the diameter of cylindrical strip thing is controlled at 2~10 millimeters, and (5) are input to the cement threshing ground with cylindrical strip thing and carry out airing, and the cylindrical strip thing water content after the airing is less than 15%; (6) will carry out abrasive dust in the cylindrical strip thing input grinding machine after the airing, and in the meal outlet access pipeline self-tipping type permanent-magnetic iron expeller with grinding machine, powder to abrasive dust output carries out deironing, the grain fineness of powder is less than 0.044 millimeter, (7) stir adding water in the input of the powder after the deironing mixer, be the finished product of the ceramic pressing shaping of concavo-convex rod blank after stirring, the finished product moisture content is controlled at 5%~18%;
The batching of the ceramic pressing shaping of described concavo-convex rod blank is made up of following component by weight percentage: Concave-convex clay rod 45~65%, white bentonite 10~30%, kaolin 5~20%, ripe flint clay 5~20%, sodium carbonate 0.1~3% and sodium metasilicate 0.1~3%;
The batching that described immersion sodium is handled is made up of following component by weight percentage: mixture 55~75% after the pulverizing and water 25~45%.
CN201010562365A 2010-11-29 2010-11-29 Method for producing attapulgite ceramic pressing process forming blank Expired - Fee Related CN102166781B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101284735A (en) * 2008-05-16 2008-10-15 中国科学技术大学 Porous heat transfer element
CN101498395A (en) * 2009-03-06 2009-08-05 江苏华伟佳建材科技有限公司 Expansion vitrification micro-bead thermal insulation pipe case and production method thereof
US7752804B2 (en) * 2007-02-26 2010-07-13 Profile Products L.L.C. Porous and non-porous particle reinforcement for viscous hydraulic matrices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7752804B2 (en) * 2007-02-26 2010-07-13 Profile Products L.L.C. Porous and non-porous particle reinforcement for viscous hydraulic matrices
CN101284735A (en) * 2008-05-16 2008-10-15 中国科学技术大学 Porous heat transfer element
CN101498395A (en) * 2009-03-06 2009-08-05 江苏华伟佳建材科技有限公司 Expansion vitrification micro-bead thermal insulation pipe case and production method thereof

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