CN1986482A - Preparing process of granular material for industrial ceramic blank - Google Patents
Preparing process of granular material for industrial ceramic blank Download PDFInfo
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- CN1986482A CN1986482A CN 200510120655 CN200510120655A CN1986482A CN 1986482 A CN1986482 A CN 1986482A CN 200510120655 CN200510120655 CN 200510120655 CN 200510120655 A CN200510120655 A CN 200510120655A CN 1986482 A CN1986482 A CN 1986482A
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Abstract
The present invention is preparation process of granular material for industrial ceramic biscuit of feldspar ceramic, talcum ceramic and heat resisting ceramic and features the adoption of adhesive. The preparation process includes the main steps of preparing material, dry ball milling, regulating material and ageing, sieving and pelletizing. The material includes potash feldspar, quartz, kaolin, zinc oxide, calcined talcum powder, raw talcum, barium carbonate, cordierite, adhesive of yellow dextrin and methyl cellulose aqua, and demolding agent compounded with tallow and kerosene. The granular material has high plasticity and homogeneous aggregate structure, and is suitable for making ceramic biscuit mechanically and manually.
Description
Technical field:
The present invention relates to a kind of preparation method of industrial ceramic blank pellet, specifically relate to the preparation method of the industrial ceramic blank pellet of the half-dried wet moulding of a kind of usefulness.
Technical background:
As everyone knows, ceramic has very long production history, its manufacturing process is of a great variety, forming method to blank also is varied, and industrial ceramics make blank technology, normally select according to the factors such as performance requriements, shape, size, thickness, output and economic benefit of goods.At present, the blank forming method of widely used industrial ceramics roughly can reduce dry-press process, moulds the method moulding, the moulding of stream method, half-dried wet moulding, hot pressing injection molding be several.The product of number hot pressing injection molding manufacturing is best in quality among them, it is good to have product appearance smooth finish, the characteristics that dimensional precision is high, but its cost of manufacture also is the highest in this several method, be dry method, mould method, stream 1～2 times of method, be 3～5 times of half-dried wet method, adopt when often only being suitable for making high-precision goods.And half-dried wet moulding is minimum a kind of of cost of manufacture in this several method, but its product surface slickness and dimensional precision relatively poor also be that everybody generally acknowledges, so be difficult to be widely used.Three kinds of forming methods in addition exist that manufacturing process is numerous and diverse, the production cycle is long, need the big shortcoming of double sintering consumption fuel, at quality and cost, the various contradiction days that industrial development and natural energy resources distribute show outstanding today, and its too high production cost has made each Production of Ceramics enterprise be faced with huge survival pressure.
In order to reduce the manufacturing cost that grows to even greater heights, each Production of Ceramics enterprise strengthens research and development capabilities one after another, so that in the preparation of making the base pellet, ask for the cheap material of a kind of employing, preparation section is simple, be fit to again disposable sinter finished product into make base pellet preparation method, with the alleviation world fuel immense pressure of bringing to enterprise in short supply.
Summary of the invention:
The invention reside in the preparation method of the industrial ceramic blank pellet that the half-dried wet moulding of a kind of usefulness is provided, it is compared with the base pellet technology of preparing of making that existing half-dried wet moulding is adopted, have and make the porcelain making material that the base raw material all adopts standard, adopted the interpolation adhesive techniques, institute's product surface smooth finish of making is good, the dimensional precision height, quite near the quality product made from the hot pressing injection, the yield rate height, qualification rate can reach (qualification rate of prior art can only reach about 70% usually) more than 90%, and has only 30% of hot pressing injection with the cost that this manufactured goes out industrial ceramics, cost than conventional semi wet method only exceeds about 30%, and the physical strength of goods, electrical property also can reach the industry standard requirement.
In order to achieve the above object, the present invention has adopted potassium felspar sand, quartz, kaolin, zinc oxide, calcinated talc powder, talcum, wilkinite, barium carbonate, trichroite for making the base raw material, selecting yellow starch gum solution or methylated cellulose aqueous solution, the xylogen aqueous solution for use is cakingagent, with the mixed solution of butter (oil of animal) and kerosene is releasing agent when making base, make base raw material configuration according to the characteristic of feldspathic china, steatite ceramic, heat resisting porcelain, old by dry ball milling, condiment again, the granulating working procedure of sieving makes that plasticity-is good, a uniformity make the base pellet.
Technical scheme of the present invention is as follows:
A kind of preparation method of granular material for industrial ceramic blank, it makes the base raw material is potassium felspar sand, quartz, kaolin, zinc oxide, calcinated talc powder, wilkinite, talcum, barium carbonate, trichroite.Wherein, the porcelain making raw material and the weight proportion of manufacturing feldspathic china are: potassium felspar sand 28～35%, quartz 20～25%, kaolin 42～45%, zinc oxide 1～2%; Porcelain making raw material and the weight proportion of making steatite ceramic are: calcinated talc powder 55～75%, first feldspar 8～13%, kaolin 5～20%, wilkinite 3～4%, barium carbonate 3～10%; Porcelain making raw material and the weight proportion of making heat resisting porcelain are: kaolin 23～35%, first feldspar 10～15%, talcum 8～12%, trichroite 38～59%.The fineness of potassium felspar sand and quartz powder materials requires between 150～200 orders, kaolin employing burn decrement rate is 9～14% smart mud powder, zinc oxide adopts calcining content at the zinc oxide powder more than 98%, trichroite adopts fineness at 60～100 purpose powders, adopt yellow starch gum solution or methocel solution as cakingagent in addition, with the mixed solution of butter and kerosene as releasing agent.
Moulding process of the present invention comprises batching, dry ball milling, old, four operations of granulation of sieving of condiment.
Above-mentioned burden process comprises preparation and makes base raw material, preparation cakingagent, prepares to take off and touch three kinds of preparation works of agent.Wherein preparation is made the base raw material and is meant according to waiting that the characteristic of making industrial ceramics carries out proportioning raw materials (which kind of in feldspathic china, steatite ceramic, the heat resisting porcelain pottery promptly to be made belong to), the process that the starting material of choosing are mixed, evenly stir, here mandatory declaration be, when preparing the material of heat resisting porcelain, because trichroite do not need the goal ball milling, thus during its preparing materials with other three kinds of starting material uniform mixing; The preparation binding agent is meant and gets yellow starch gum or methylcellulose gum, makes concentration and be 5%～12% the yellow starch gum aqueous solution, perhaps the process of 4.8%～5.6% methylated cellulose aqueous solution; The preparation releasing agent is meant but butter are put into to heat in the container of iron pan or other calcination and only dissolves, and adds kerosene then and stirs, and allows the well-mixed process of butter and kerosene, and the weight ratio of butter and kerosene is 3: 7.
The above dry ball milling operation is meant to be made base raw material dry method goal, goes out ball what prepared, the ball egg is 1.5: 1 with the part by weight of making the base raw material, the ball milling time is determined according to the requirement and the fineness of product, conventional products usually needs 15～18 hours, and the fineness of raw material reaches 100g and crosses and remain 1～2g behind 250 mesh sieves and be advisable in addition.
The old operation of the above condiment is meant and is sealed in the container after stirring through adding cakingagent in the powder of ball milling, and deposits in shady and cool place and allow binding agent fully permeate process in powder.Working concentration is that 5%～12% the yellow starch gum aqueous solution or 4.8%～5.6% methylated cellulose aqueous solution are cakingagent, add-on is to contain 1.5～3 parts of solute substances in 100 parts of powders, sealing time of depositing is not less than 48 hours, makes that the content of moisture content is controlled between 15～25% in the powder.
The above granulating working procedure of sieving is meant the process of old good powder being crossed the mesh screen choosing, and the order number of mesh screen is looked shape, the size of waiting to make product and decided bulky employing 4 mesh sieves, employing 8 mesh sieves that small product size is little.
Above-described releasing agent is to use when the press ceramic blank, spreads upon during use on that surface of shaping steel die, so that blank and the smooth of punching block separate.
Embodiment:
The invention provides a kind of preparation method of granular material for industrial ceramic blank, its moulding process comprises batching, dry ball milling, old, four operations of granulation of sieving of condiment; Adopting potassium felspar sand, quartz, kaolin, zinc oxide, calcinated talc powder, wilkinite, talcum, barium carbonate, trichroite is the raw material of making base.Wherein, the porcelain making raw material and the weight proportion of manufacturing feldspathic china are: potassium felspar sand 28～35%, quartz 20～25%, kaolin 42～45%, zinc oxide 1～2%; Porcelain making raw material and the weight proportion of making steatite ceramic are: calcinated talc powder 55～75%, first feldspar 8～13%, kaolin 5～20%, wilkinite 3～4%, barium carbonate 3～10%; Porcelain making raw material and the weight proportion of making heat resisting porcelain are: kaolin 23～35%, first feldspar 10～15%, talcum 8～12%, trichroite 38～59%.The fineness of potassium felspar sand and quartz powder materials requires between 150～200 orders, and kaolin employing burn decrement rate is 9～14% smart mud powder, and zinc oxide adopts calcining content at the zinc oxide powder more than 98%, and trichroite adopts fineness at 60～100 purpose powders.In addition, adopt yellow starch gum solution or methocel solution as cakingagent, with the mixed solution of butter and kerosene as releasing agent.
The specific embodiment of the present invention is as follows:
Embodiment 1:(preparation feldspathic china is made the base pellet)
The first step: batching
The base raw material is made in a, preparation: preparation 500kg makes the base raw material, its way is to stir after the zinc oxide of getting the kaolin of the quartz of the potassium felspar sand of 140kg, 125kg, 225kg, 10kg respectively in meeting the stand-by starting material of selecting condition for use mixes, and is standby then.
B, preparation cakingagent: cakingagent, its way of preparation 1000kg is that the methylcellulose gum of getting 48kg is earlier put in the water of 952kg fully after the stirring and dissolving standby.
C, preparation releasing agent: releasing agent, its way of preparation 100kg is that the butter of getting 30kg are put into and heated in the iron pan to the butter fusing, and it is standby that the kerosene of adding 70kg then evenly mixes the back.
Second step: dry ball milling
Get and prepare the standby base raw material of making among the 200kg the first step a and put in the abrading-ball, the ball egg is to be 1.5: 1 with the part by weight of making the base raw material, the time of ball milling, visual requirement and the fineness of making product waited determined, usually in 6～9 hours, finish, if that waits to make product requires time that the higher position adds the long ball mould for well, it is standby that the material after ball milling is good is deposited in shady and cool place.
The 3rd step: condiment is old
Getting 200kg was placed in the utensil through the good material of ball milling in second step, add again among the 50kg the first step b and prepare standby cakingagent, firmly they are stirred, then they all are placed in the airtight container, and good seal leaves shady and cool place in, contains out material standby from airtight container after 48 hours.
The 4th step: the granulation of sieving
The old good material of the 3rd step material is wiped sieve on 4 eye mesh screens, to be placed in the utensil through the pellet of screen cloth screening, blank is the blank that available these pellets are suppressed feldspathic china, must on mould, coats releasing agent during slug press, so that can separate smoothly with mould.
Embodiment 2:(preparation feldspathic china is made the base pellet)
The first step: batching
A. the base raw material is made in preparation: preparation 1000kg makes the base raw material, its way be stir after the zinc oxide of getting the kaolin of the quartz of the potassium felspar sand of 330kg, 200kg, 450kg, 20kg respectively in meeting the stand-by starting material of selecting condition for use mixes, standby then.
B. prepare cakingagent: the cakingagent of preparation 3000kg, way are that the methylcellulose gum of getting 150kg is earlier put in the water of 2850kg fully after the stirring and dissolving standby.
C. prepare releasing agent: releasing agent, its way of preparation 150kg is that the butter of getting 45kg are put into and heated in the iron pan to the butter fusing, and it is standby that the kerosene of adding 105kg then evenly mixes the back.
Second step: ball milling
Get and prepare the standby base raw material of making among the 1000kg the first step a and put in the abrading-ball, the ball egg is to be 1.5: 1 with the part by weight of making the base raw material, the time of ball milling, visual requirement and the fineness of making product waited determined, usually in 6～9 hours, finish, if wait to make product require time that the higher position adds the long ball mould for well.It is standby that material after ball milling is good is deposited in shady and cool place.
The 3rd step: condiment is old
Getting 1000kg was placed in the utensil through the good material of ball milling in second step, add again among the 230kg the first step b and prepare standby cakingagent, firmly they are stirred, then they all are placed in the airtight container, and good seal leaves shady and cool place in, contains out material standby from airtight container after 48 hours.
Repeating among the embodiment 1 the 4th one then gets final product.
Embodiment 3:(preparation feldspathic china is made the base pellet)
The first step: batching
The base raw material is made in a, preparation: preparation 500kg makes the base raw material, its way be stir after the zinc oxide of getting the kaolin of the quartz of the potassium felspar sand of 140kg, 125kg, 225kg, 10kg respectively in meeting the stand-by starting material of selecting condition for use mixes, standby then.
B, system cakingagent: the cakingagent of preparation 1000kg, its way are that the methylcellulose gum of getting 56kg is earlier put in the water of 944kg fully after the stirring and dissolving standby.
C, preparation releasing agent: the releasing agent of preparation 80kg, its way are that the butter of getting 30kg are put into and heated in the iron pan to the butter fusing, and it is standby that the kerosene of adding 70kg then evenly mixes the back.
Repeat then among the embodiment 1 second, third, the 4th one get final product.
Embodiment 4:(preparation steatite ceramic is made the base pellet)
The first step: batching
A. prepare steatite ceramic and make the base raw material: preparation 500kg makes the base raw material, its way is to stir get calcinated talc powder 375kg, first feldspar 40kg, kaolin 40kg, wilkinite (XH-60) 20kg, barium carbonate 25kg mixing respectively in meeting the stand-by starting material of selecting condition for use after, and is standby then; Stir after perhaps getting calcinated talc powder 305kg, first feldspar 65kg, kaolin 100kg, wilkinite 15kg, barium carbonate 15kg mixing, standby then; Stir after perhaps getting calcinated talc powder 275kg, first feldspar 65kg, kaolin 90kg, wilkinite 20kg, barium carbonate 50kg mixing, standby then.
B. prepare cakingagent: it is 5%～12% yellow starch gum aqueous solution 1000kg that concentration is satisfied in preparation, and its way is that the yellow starch gum of getting 60kg is earlier put in the water of 940kg fully after the stirring and dissolving standby.
C. prepare releasing agent: releasing agent, its way of preparation 100kg is that the butter of getting 30kg are put into and heated in the iron pan to the butter fusing, and it is standby that the kerosene of adding 70kg then evenly mixes the back.
Second step: dry ball milling
Get and prepare the standby base raw material of making among the 300kg the first step a and put in the abrading-ball, the ball egg is to be 1.5: 1 with the part by weight of making the base raw material, the time of ball milling, visual requirement and the fineness of making product waited determined, usually in 15～18 hours, finish, if wait to make the little time that just adds the long ball mould of the geomery of product for well, in addition the fineness of material reaches 100g and crosses 250 mesh sieves residue, 1～2g and be advisable behind the ball milling, the material after ball milling is good deposit in shady and cool locate standby.
The 3rd step: condiment is old
Getting 250kg was placed in the utensil through the good material of ball milling in second step, add again among the 50kg the first step b and prepare standby cakingagent, firmly they are stirred, then they all are placed in the airtight container, and good seal leaves shady and cool place in, contains out material standby from airtight container after 48 hours.
The 4th step: the granulation of sieving
The old good material of the 3rd step material is wiped sieve on 4 eye mesh screens, to be placed in the utensil through the pellet of screen cloth screening, blank is the blank that available these pellets come the compressed talc porcelain, must on mould, coats releasing agent during slug press, so that can separate smoothly with mould.
Embodiment 5:(preparation heat resisting porcelain is made the base pellet)
The first step: batching
A. prepare heat resisting porcelain and make the base raw material: preparation 300kg makes the base raw material, its way be in meeting the stand-by starting material of selecting condition for use, get kaolin 105kg respectively, first feldspar 36kg, talcum 30k stir after mixing, and be standby then.
B. prepare cakingagent: it is 5%～12% yellow starch gum aqueous solution 100kg that concentration is satisfied in preparation, and it is standby that its way is that the yellow starch gum of getting 8kg earlier advances to put in the water of 92kg fully after the stirring and dissolving.
C. prepare releasing agent: releasing agent, its way of preparation 50kg is that the butter of getting 15kg are put into and heated in the iron pan to the butter fusing, and it is standby that the kerosene of adding 35kg then evenly mixes the back.
Second step: dry ball milling
Get and prepare the standby base raw material of making among the 200kg the first step a and put in the abrading-ball, the ball egg is to be 1.5: 1 with the part by weight of making the base raw material, the time of ball milling, visual requirement and the shape size of making product waited determined, usually in 6～9 hours, finish, if wait to make the little time that just adds the long ball mould of requirement height, the shape of product for well, the fineness of material reaches 100g and crosses 250 mesh sieves residue, 3～5g and be advisable behind the ball milling in addition.After the trichroite that goes out material ball milling is good behind the ball and 129kg is put stirrer into and evenly stirred, contain out that to deposit in shady and cool place standby.
The 3rd step: condiment is old
Getting 150kg was placed in the utensil through the good material of ball milling in second step, add again among the 40kg the first step b and prepare standby cakingagent, all be placed in the airtight container after they are stirred, and good seal leaves shady and cool place in, contains out material standby from airtight container after 48 hours.
The 4th step: the granulation of sieving
The old good material of the 3rd step material is wiped sieve on 4 eye mesh screens, to be placed in the utensil through the pellet of screen cloth screening, blank is the blank that available these pellets are suppressed heat resisting porcelain, must on mould, coats releasing agent during slug press, so that can separate smoothly with mould.
More than prepared among the five routine embodiment make the blank that base produces with pellet, can be through the disposable finished product that sinters into, and the surface flatness of product, dimensional precision, physical strength, electrical property can both reach purpose of the present invention.
Below be the finished product sampling inspection data of being prepared among the embodiment 5 that the base pellet is made of making:
1. size deviation sampling results:
Randomly draw ten za samples that compacting is burnt till, the data of measurement are as follows:
(unit: mm)
| Sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Mean value | Specification | Deviation |
| External diameter | 280.1 | 280.1 | 280.2 | 280.1 | 280.2 | 280.2 | 280.1 | 280.3 | 280.1 | 280.3 | 280.2 | 280±0.5 | +0.2 |
| Thickness | 8.7 | 8.6 | 8.6 | 8.5 | 8.7 | 8.7 | 8.6 | 8.5 | 8.5 | 8.6 | 8.6 | 9±0.5 | -0.4 |
2. surface flatness sampling results:
Randomly draw 30 za samples that compacting is burnt till, visual observation is as follows:
| Range estimation surface item | Salient point is arranged | Have＞concave point of 1mm | The concave point that 2-4＜1mm is arranged | The concave point that 4-8＜1mm is arranged | Have more than 8＜concave point of 1mm |
| Visual observation | 0 | 0 | 4 | 1 | 0 |
Claims (8)
1, a kind of preparation method of granular material for industrial ceramic blank, it is characterized in that being fit to preparation feldspathic china, steatite ceramic, heat resisting porcelain make base with pellet the time use, the porcelain making raw material that adopts has: potassium felspar sand, quartz, kaolin, zinc oxide, calcinated talc powder, wilkinite, talcum, barium carbonate, trichroite, adopted binding agent, binding agent is the methylated cellulose aqueous solution or the yellow starch gum aqueous solution, the releasing agent that adopts is the mixed solution of butter and kerosene, and preparation technology mainly comprises batching, dry ball milling, old, the granulating working procedure of sieving of condiment.
2, according to claims 1 described preparation method, the selection of its porcelain making raw material requires: the fineness of potassium felspar sand, quartz powder materials requires between 150～200 orders, kaolin employing burn decrement rate is 9～14% smart mud powder, zinc oxide adopts calcining content at the zinc oxide powder more than 98%, and trichroite adopts fineness at 60～100 purpose powders.
3, according to the claims 1 described preparation method who makes base with pellet, described cakingagent is that concentration is 5%～12% the yellow starch gum aqueous solution, perhaps 4.8%～5.6% methylated cellulose aqueous solution.
4, according to claims 1 described preparation method, described releasing agent adopts the mixed solution of butter and kerosene, and the weight ratio of butter and kerosene is 3: 7, and the two mixes by heating, and releasing agent uses when the press ceramic blank.
5, according to claims 1 described preparation method, the porcelain making raw material and the weight proportion that are suitable for the manufacturing feldspathic china are: potassium felspar sand 28～35%, quartz 20～25%, kaolin 42～45%, zinc oxide 1～2%.
6, according to claims 1 described preparation method, the porcelain making raw material and the weight proportion that are suitable for the manufacturing steatite ceramic are: calcinated talc powder 55～75%, first feldspar 8～13%, kaolin 5～20%, wilkinite 3～4%, barium carbonate 3～10%.
7, according to claims 1 described preparation method, the porcelain making raw material and the weight proportion that are suitable for the manufacturing heat resisting porcelain are: kaolin 23～35%, first feldspar 10～15%, talcum 8～12%, trichroite 38～59%.
8, according to claims 1 and claims 4 described releasing agents, butter wherein are a kind of animal oil.
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| CN 200510120655 CN1986482A (en) | 2005-12-21 | 2005-12-21 | Preparing process of granular material for industrial ceramic blank |
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| CN 200510120655 CN1986482A (en) | 2005-12-21 | 2005-12-21 | Preparing process of granular material for industrial ceramic blank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121282B (en) * | 2007-09-26 | 2010-05-19 | 中国地质大学（武汉） | Technology for preparing blank for constructive ceramic with semi-drying method |
| CN105294053A (en) * | 2015-10-26 | 2016-02-03 | 郭任彬 | Ceramic floor drain and manufacturing method thereof |
| CN106113220A (en) * | 2016-07-06 | 2016-11-16 | 无锡市华东电力设备有限公司 | A kind of method producing ceramic particles |
| CN106167726A (en) * | 2016-06-30 | 2016-11-30 | 安徽智博新材料科技有限公司 | A kind of ceramic bowl rotates base releasing agent |
| WO2017101269A1 (en) * | 2015-12-16 | 2017-06-22 | 佛山市博晖机电有限公司 | Ceramic powder formula and manufacturing process therefor |
| CN114315313A (en) * | 2021-12-31 | 2022-04-12 | 湖南英捷高科技有限责任公司 | Injection molding method of steatite porcelain |
-
2005
- 2005-12-21 CN CN 200510120655 patent/CN1986482A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121282B (en) * | 2007-09-26 | 2010-05-19 | 中国地质大学（武汉） | Technology for preparing blank for constructive ceramic with semi-drying method |
| CN105294053A (en) * | 2015-10-26 | 2016-02-03 | 郭任彬 | Ceramic floor drain and manufacturing method thereof |
| WO2017101269A1 (en) * | 2015-12-16 | 2017-06-22 | 佛山市博晖机电有限公司 | Ceramic powder formula and manufacturing process therefor |
| CN106167726A (en) * | 2016-06-30 | 2016-11-30 | 安徽智博新材料科技有限公司 | A kind of ceramic bowl rotates base releasing agent |
| CN106113220A (en) * | 2016-07-06 | 2016-11-16 | 无锡市华东电力设备有限公司 | A kind of method producing ceramic particles |
| CN114315313A (en) * | 2021-12-31 | 2022-04-12 | 湖南英捷高科技有限责任公司 | Injection molding method of steatite porcelain |
| CN114315313B (en) * | 2021-12-31 | 2023-08-22 | 湖南英捷高科技有限责任公司 | Injection molding method of talcum porcelain |
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