CN102166781B - Method for producing attapulgite ceramic pressing process forming blank - Google Patents
Method for producing attapulgite ceramic pressing process forming blank Download PDFInfo
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- CN102166781B CN102166781B CN201010562365A CN201010562365A CN102166781B CN 102166781 B CN102166781 B CN 102166781B CN 201010562365 A CN201010562365 A CN 201010562365A CN 201010562365 A CN201010562365 A CN 201010562365A CN 102166781 B CN102166781 B CN 102166781B
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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
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 containing feldspar, quartz, mica, iron ore and other fragments as the rock in china clay source, china clay is the primary raw material of pottery, develops kaolin that high-grade household china needs 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, and base substrate is fine and close, and 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 newly developed is unstable; 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, carries 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.
The Concave-convex clay rod soil property is fine and smooth, and oily soapy is arranged, 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, and in the present invention, these compositions are the plasticity that helps regulating the ceramic pressing shaping of concavo-convex rod blank through the screening of purifying; 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; The ceramic that can avoid the use of the production of the ceramic pressing shaping of concavo-convex rod blank cracks, and also helps the plasticity and raising whiteness of regulating the ceramic pressing shaping of concavo-convex rod blank.
The kaolin outward appearance is white, light gray isochrome, compact massive or loose earthy have soapy feeling; The sticking tongue in dry back; Water imbibition is arranged, and the kaolin refractoriness is high, the pure kaolin of matter have whiteness height, matter soft, be prone to dispersion suspension 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, have quality evenly, characteristic such as compact structure, volume stability, refractory temperature high strength be big, in water, be difficult for disperseing, plasticity is lower and 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 through 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) with being 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) with carrying 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, and the grain fineness of powder is less than 0.044 millimeter, and stir adding water in the input of the powder after the deironing mixer (7); 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 said 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 said immersion sodium is handled is made up of following component by weight percentage: mixture 55~75% and water 25~45% after the pulverizing.
After the batching of the ceramic pressing shaping of concavo-convex rod blank is handled, is pressed into tablet and is squeezed into bar through the immersion sodium, its internal microstructure quilt " bulking ", and form micro-gap and crack; Thereby moisture is got into wherein easily; Cause microstructural hydration swelling, so that the dispersion of under weak dispersion condition, just can in medium, disintegrating, viscosity higher formed; Guarantee that all even structure of moisture is consistent 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 plasticity, yield value height and the extensional amount of the ceramic pressing shaping of concavo-convex rod blank.
Moisture is low in the ceramic pressing shaping of the concavo-convex rod blank; Base substrate is fine and close; 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
Below in conjunction with embodiment the present invention is done further description:
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) with being 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) with carrying 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, and the grain fineness of powder is less than 0.044 millimeter, and stir adding water in the input of the powder after the deironing mixer (7); 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 said 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 said immersion sodium is handled is made up of following component by weight percentage: mixture 60% and water 40% after the pulverizing.
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) with being 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) with carrying 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, and the grain fineness of powder is less than 0.044 millimeter, and stir adding water in the input of the powder after the deironing mixer (7); 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 said 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 said immersion sodium is handled is made up of following component by weight percentage: mixture 55~75% and water 25~45% after the pulverizing.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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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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