CN102166782B - Method for producing attapulgite ceramic slurry - Google Patents

Abstract

The invention discloses a method for producing attapulgite ceramic slurry. The key point of the technical scheme is that: the method comprises the following steps of: mixing ingredients of the attapulgite ceramic slurry, grinding, soaking the ground mixture in water, performing sodium treatment to obtain a wet mixture, pressing the wet mixture into a sheet, extruding into a strip, airing, pulverizing, and deironing powder to obtain a semi-finished product; and putting the semi-finished product into a vacuum stirrer, adding water, and stirring to obtain slurry, namely the finished product of the attapulgite ceramic slurry. The attapulgite ceramic slurry consists of attapulgite clay, white bentonite, calcined clay, sodium humate and sodium carbonate. The attapulgite ceramic slurry produced by the method has high caking property, plasticity, fluidity, thixotropy, suspension property, stability, water content and permeability; a ceramic product prepared from the attapulgite ceramic slurry has the characteristics of low shrinkage, no deformation, high strength and uniform texture; the method for producing the attapulgite ceramic slurry is simple, and low in cost; and the attapulgite ceramic slurry is suitable for forming and producing the ceramic product by a grouting method.

Description

The production method of concavo-convex excellent ceramic size

Technical field

The present invention relates to ceramic size, be specifically related to a kind of production method of concavo-convex excellent ceramic size.

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.

The slurry of casting requires to have good flowability, thixotropy, suspension, stability, moisture content and permeability, but some china clay raw material newly developed are difficult to the condition that reaches above-mentioned, 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, a kind of production method of concavo-convex excellent ceramic size is provided.

The production method of concavo-convex excellent ceramic size is: pulverize after the batch mixes with concavo-convex excellent ceramic size earlier; Mixture water after the pulverizing soaks sodium and is treated to moistening shape mixture, and moistening shape mixture is pressed into tablet, is squeezed into bar again; Carry out abrasive dust after the airing; Powder is carried out being after the deironing semi-finished product, semi-finished product are imported is added water in the de-airing mixer and stir that the slurry after the stirring is the finished product of concavo-convex excellent ceramic size.

Concavo-convex excellent ceramic size is made up of Concave-convex clay rod, white bentonite, ripe flint clay, sodium humate 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 concavo-convex excellent ceramic size 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 concavo-convex excellent ceramic size production cracks, and also helps the plasticity and raising whiteness of regulating concavo-convex excellent ceramic size.

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 concavo-convex excellent ceramic size; It is low to avoid into the porcelain temperature, reduces distortion and raising whiteness that ceramic produces when burning till.

Sodium humate has effects such as plasticising, enhancing, dilution and absorption bonding, can improve plasticity, flowability and the suspension of concavo-convex excellent ceramic size, and can increase green body strength.

Sodium carbonate is used for that in the present invention concavo-convex excellent ceramic size batching is carried out sodium modification to be handled, and can improve the plasticity and the adhesive property of concavo-convex excellent ceramic size.

The present invention is achieved through following technical proposals:

1, the production method of concavo-convex excellent ceramic size is: (1) with the batch mixes of concavo-convex excellent ceramic size 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 being semi-finished product after the deironing, and half-finished grain fineness is less than 0.044 millimeter, and stir adding water in the input of the semi-finished product after the deironing de-airing mixer (7); The moisture content of concavo-convex excellent ceramic size finished product is controlled at 25%～50%, and the slurry that stirs back output is the finished product of concavo-convex excellent ceramic size.

Concavo-convex excellent ceramic size evenly stirs under vacuum state and drains the bubble in the slurry, has guaranteed the quality of concavo-convex excellent ceramic size.

The batching of said concavo-convex excellent ceramic size is made up of following component by weight percentage: Concave-convex clay rod 35～60%, white bentonite 10～35%, ripe flint clay 5～30%, sodium carbonate 0.1～3% and sodium humate 0.1～2%.

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 concavo-convex excellent ceramic size 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; Thixotropy also obviously strengthens; Can also strengthen the old effect of concavo-convex excellent ceramic size, improve the osmotic pressure of ion between pulp particle, improve the plasticity and the thixotropy of concavo-convex excellent ceramic size.

The concavo-convex excellent ceramic size that the present invention produces has good preferably caking property, plasticity, flowability, thixotropy, suspension, stability, moisture content and permeability; The ceramic that uses concavo-convex excellent ceramic size 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 concavo-convex excellent ceramic size.

The production method technology of concavo-convex excellent ceramic size is simple, low production cost.

Concavo-convex excellent ceramic size is applicable to slip casting method shaping production ceramic.

The specific embodiment

Below in conjunction with embodiment the present invention is done further description:

1, the production method of concavo-convex excellent ceramic size is: (1) with the batch mixes of concavo-convex excellent ceramic size 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 3 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 4 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 being semi-finished product after the deironing, and half-finished grain fineness is less than 0.044 millimeter, and stir adding water in the input of the semi-finished product after the deironing de-airing mixer (7); The moisture content of concavo-convex excellent ceramic size finished product is controlled at 30%～35%, and the slurry that stirs back output is the finished product of concavo-convex excellent ceramic size.

The batching of said concavo-convex excellent ceramic size is made up of following component by weight percentage: Concave-convex clay rod 55%, white bentonite 25%, ripe flint clay 18.6%, sodium carbonate 1% and sodium humate 0.4%.

The batching that said immersion sodium is handled is made up of following component by weight percentage: mixture 66% and water 34% after the pulverizing.

Claims (1)

1. the production method of a concavo-convex excellent ceramic size is characterized in that, (1) with the batch mixes of concavo-convex excellent ceramic size 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 being semi-finished product after the deironing, and half-finished grain fineness is less than 0.044 millimeter, and stir adding water in the input of the semi-finished product after the deironing de-airing mixer (7); The moisture content of concavo-convex excellent ceramic size finished product is controlled at 25%～50%, and the slurry that stirs back output is the finished product of concavo-convex excellent ceramic size;

The batching of said concavo-convex excellent ceramic size is made up of following component by weight percentage: Concave-convex clay rod 35～60%, white bentonite 10～35%, ripe flint clay 5～30%, sodium carbonate 0.1～3% and sodium humate 0.1～2%;

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.