CN110128110A - A kind of method of drying in the shade of large scale electric porcelain blank - Google Patents
A kind of method of drying in the shade of large scale electric porcelain blank Download PDFInfo
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- CN110128110A CN110128110A CN201910320549.1A CN201910320549A CN110128110A CN 110128110 A CN110128110 A CN 110128110A CN 201910320549 A CN201910320549 A CN 201910320549A CN 110128110 A CN110128110 A CN 110128110A
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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
- C04B33/24—Manufacture of porcelain or white ware
- C04B33/26—Manufacture of porcelain or white ware of porcelain for electrical insulation
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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
- C04B33/30—Drying methods
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Dispersion Chemistry (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Inorganic Chemistry (AREA)
- Insulating Bodies (AREA)
Abstract
The present invention relates to a kind of methods of drying in the shade of large scale electric porcelain blank, it is the following steps are included: progress mixing and ball milling obtains slurry after (a) weighs raw material components by formula rate；(b) it is sieved to the slurry, except iron is handled, obtains blank after then passing through compacting, repaired biscuit molding；(c) it is powered the both ends of the blank to remove moisture.The production cycle is substantially reduced, material cycling is accelerated, the time of drying in the shade only needs 2 ~ 3 days, improves production efficiency；The internal moisture of blank is highly uniform, bakes more controllable so that subsequent, while the time that bakes in later period can shorten 1 ~ 2 day, reduce the consumption of natural gas energy resource, and product qualified rate promotion can reach 20% or more.
Description
Technical field
The invention belongs to porcelain insulation subdomains, are related to a kind of production method of electric porcelain blank, and in particular to a kind of big ruler
The method of drying in the shade of very little electric porcelain blank.
Background technique
Insulator is usually made of glass or ceramics, it typically serves to two effects in overhead transmission lines: support is led
Line and prevent electric current return ground.Porcelain insulator (i.e. electroceramics) classification is numerous, can be divided into pillar insulator (i.e. bar type), suspension type by structure
Insulator, pin insulator, shackle insulator, strain insulator, anti-pollution type insulator and bushing insulator etc..
With the promotion that power construction department requires porcelain insulator, the performance direction high intensity of porcelain insulator, high voltage
The directions such as grade, high resistance to filth are developed；And solid core post insulator form equal static pressure dry process production gradually occupy it is leading
The status of status.The process route of the static pressure dry method such as conventional are as follows: ingredient ball milling-mistake screens out the static pressure suppressions-such as iron-mist projection granulating-
Repaired biscuit form-preheat the secondary glaze spraying-secondary drying-of-glaze spraying-first drying-of base enter kiln firing-cutting and grinding-mucilage binding support
It protects-is packed and stored.And preheat base and generally use the mode that nature dries in the shade and carry out, carrying out natural gas after drying in the shade naturally again bakes, this
There are following technical problems for sample: period for drying in the shade naturally needs 8 ~ 10 days, and bad (this is for big for the uniformity of blank moisture
The influence of size electric porcelain blank is contained especially, and large scale typically refers to blank diameter having a size of 180mm or more)；Naturally it dries in the shade by ring
Border factor is affected, and quality fluctuation easily occurs.
Summary of the invention
A kind of method of drying in the shade of large scale electric porcelain blank is provided the invention aims to overcome the deficiencies in the prior art.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of method of drying in the shade of large scale electric porcelain blank, it
The following steps are included:
(a) progress mixing and ball milling obtains slurry after weighing raw material components by formula rate；
(b) it is sieved to the slurry, except iron is handled, obtains blank after then passing through compacting, repaired biscuit molding；
(c) it is powered the both ends of the blank to remove moisture.
Optimally, in step (c), the process of the energization are as follows: the electric current of the blank is increased to 0.1A with 1h, then
The electric current of the blank is increased to 0.26A with the speed of 0.04A/h, with the speed of 0.03A/h by the electric current liter of the blank
Up to 0.38A, the electric current of the blank is increased to by 0.52A with the speed of 0.02A/h, with the speed of 0.04A/h by the base
The electric current of part is increased to 0.68A, then is kept for 4 hours under the current condition of 0.68A.
Further, in step (b), the slurry imports progress filters pressing in filter press and obtains filter cake after except iron processing,
Then filter cake is transferred to and carries out suppressing to obtain blank in isostatic pressing machine.
Optimally, in step (a), the mass ratio of raw material components, mill ball and water is 1:1.5 ~ 2:0.5 ~ 0.8；When ball milling
Between be 8 ~ 10h.
Due to the above technical solutions, the present invention has the following advantages over the prior art: large scale electricity of the present invention
The method of drying in the shade of porcelain billet part substantially reduces the production cycle to remove moisture in such a way that energization is taken at the both ends to blank,
Material cycling is accelerated, the time of drying in the shade only needs 2 ~ 3 days, improves production efficiency；The internal moisture of blank is highly uniform, so that after
Continuous baking is more controllable, while the time that bakes in later period can shorten 1 ~ 2 day, reduces the consumption of natural gas energy resource, and finished product closes
The promotion of lattice rate can reach 20% or more.
Detailed description of the invention
Fig. 1 is the curve graph that is powered in the method for drying in the shade of large scale electric porcelain blank of the present invention.
Specific embodiment
The method of drying in the shade of large scale electric porcelain blank of the present invention, it is the following steps are included: (a) weighs raw material group by formula rate
Mixing and ball milling is carried out after point obtains slurry；(b) it is sieved to the slurry, except iron is handled, after then passing through compacting, repaired biscuit molding
Obtain blank；(c) it is powered the both ends of the blank to remove moisture.The side of energization is taken by the both ends to blank
Formula substantially reduces the production cycle to remove moisture, accelerates material cycling, and the time of drying in the shade only needs 2 ~ 3 days, improves production effect
Rate；The internal moisture of blank is highly uniform, bakes more controllable so that subsequent, while the time that bakes in later period can shorten 1 ~ 2
It, reduces the consumption of natural gas energy resource, and product qualified rate promotion can reach 20% or more.
In step (c), the process of the energization is preferred are as follows: the electric current of the blank is increased to 0.1A with 1h, then with
The electric current of the blank is increased to 0.26A, is increased the electric current of the blank with the speed of 0.03A/h by the speed of 0.04A/h
The electric current of the blank is increased to 0.52A to 0.38A, with the speed of 0.02A/h, with the speed of 0.04A/h by the blank
Electric current be increased to 0.68A, then keep 4 hours under the current condition of 0.68A, at this time product qualified rate highest.Step
(b) in, the slurry imports in filter press after except iron processing and carries out filters pressing and obtain filter cake, be then transferred to filter cake etc. quiet
It carries out suppressing to obtain blank in press.In step (a), the mass ratio of raw material components, mill ball and water is 1:1.5 ~ 2:0.5 ~ 0.8；
As long as Ball-milling Time is the granular size that 8 ~ 10h(is milled to needs).
The preferred embodiment of the invention is described in detail below in conjunction with attached drawing:
Embodiment 1
The present embodiment provides a kind of method of drying in the shade of large scale electric porcelain blank, it the following steps are included:
(a) progress mixing and ball milling obtains slurry after weighing raw material components by formula rate；Raw material components are using routine, such as application number
It (can certainly be used other existing) disclosed in Chinese invention patent embodiment 1 for 201711365521 .7；Ball milling
When raw material components (whole raw materials), mill ball and water mass ratio be 1:2:0.5, Ball-milling Time 10h enables material to lead to
Cross the sieve (tailing over 0.2 ~ 0.5wt%) of 250 mesh；
(b) sieve that slurry is carried out to 200 ~ 220 mesh removes biggish particle (repeating 3 ~ 5 times)；Using permanent magnet and electricity
The concatenated wet process magnetic separator of magnet (repeat 3 ~ 5 times) except iron；It will be pressed except the slurry after iron imports in filter press
It filters to obtain filter cake, filter cake is then transferred to isostatic pressing machine (pressure set is 110MPa in isostatic pressing machine, and uses three-level release)
In carry out suppressing to obtain crude green body part, then cooperate numerical control trimming machine carry out repaired biscuit molding after blank (diameter is about 200mm)；
(c) be powered the both ends of blank to remove moisture: the electric current of blank being increased to 0.1A with 1h, then with
The electric current of blank is increased to 0.26A by the speed of 0.04A/h, then is increased to the electric current of blank with the speed of 0.03A/h
The electric current of blank is then increased to 0.52A with the speed of 0.02A/h by 0.38A, finally with the speed of 0.04A/h by blank
Electric current is increased to 0.68A, kept under the current condition of 0.68A 4 hours can (as shown in Figure 1, abscissa be conduction time,
Ordinate is electrical current).
Embodiment 2
The present embodiment provides a kind of method of drying in the shade of large scale electric porcelain blank, it with it is almost the same in embodiment 1, it is different
It is: in step (c), galvanization are as follows: the electric current of blank is uniformly increased to 0.68A by 0 A with 20h, then in the electricity of 0.68A
It is kept for 4 hours under the conditions of stream.
Embodiment 3
The present embodiment provides a kind of method of drying in the shade of large scale electric porcelain blank, it with it is almost the same in embodiment 1, it is different
It is: in step (c), galvanization are as follows: the electric current of blank is uniformly increased to by 0 A by 0.68A with the speed of 0.04A/h, then
It is kept for 4 hours under the current condition of 0.68A.
Embodiment 4
The present embodiment provides a kind of method of drying in the shade of large scale electric porcelain blank, it with it is almost the same in embodiment 1, it is different
Be: in step (c), galvanization are as follows: the electric current of blank is uniformly increased by 0 A by 0.38A with the speed of 0.02A/h, then with
The electric current of blank is increased to 0.68A by the speed of 0.04A/h.
Comparative example 1
This example provides a kind of method of drying in the shade of large scale electric porcelain blank, it with it is almost the same in embodiment 1, unlike: step
Suddenly it is not powered in (c), and is placed in warehouse and dries in the shade naturally, under conditions of well-ventilated, time 200h.
Large scale electric porcelain blank obtained in embodiment 1-4, comparative example 1 is continued into identical following steps: will be each
Blank in example (100 blanks of every production) is put into semiautomatic showering glaze machine and carries out glaze pouring, the blank after obtaining glazing: glaze
50 DEG C of pulp-water part 40wt%, glaze temperature, the glaze layer average thickness of blank are 0.25mm.Blank is put into shuttle kiln, and in blank
Blank bottom is leveled up with alumina powder when kiln loading vehicle, is burnt into: 200 DEG C are risen to from room temperature with the rate of 10 DEG C/h, from 200
DEG C 500 DEG C are risen to 10 DEG C/h rate, rises to 800 DEG C from 500 DEG C with 10 DEG C/h, rise to 1000 DEG C from 800 DEG C with 10 DEG C/h, so
Maximum temperature is risen to as 1200 DEG C (whole process is lasting for about 5 days) with 10 DEG C/h afterwards, room temperature is cooled to (about with air cooling way
20 ~ 30 DEG C/h) up to electric porcelain insulator.To electric porcelain insulator according to the relevant criterion of GB/T 772 and GB/T 8287 carry out at
Product appearance detects (mainly crackle etc.), qualification rate are as follows: 95%, 90%, 88%, 84% and 70%.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of method of drying in the shade of large scale electric porcelain blank, which is characterized in that it the following steps are included:
(a) progress mixing and ball milling obtains slurry after weighing raw material components by formula rate；
(b) it is sieved to the slurry, except iron is handled, obtains blank after then passing through compacting, repaired biscuit molding；
(c) it is powered the both ends of the blank to remove moisture.
2. the method for drying in the shade of large scale electric porcelain blank according to claim 1, which is characterized in that in step (c), the energization
Process are as follows: the electric current of the blank is increased to 0.1A with 1h, then with the speed of 0.04A/h by the electric current liter of the blank
Up to 0.26A, the electric current of the blank is increased to by 0.38A with the speed of 0.03A/h, with the speed of 0.02A/h by the base
The electric current of part is increased to 0.52A, the electric current of the blank is increased to 0.68A, then the electricity in 0.68A with the speed of 0.04A/h
It is kept for 4 hours under the conditions of stream.
3. the method for drying in the shade of large scale electric porcelain blank according to claim 1 or claim 2, it is characterised in that: described in step (b)
Slurry imports progress filters pressing in filter press and obtains filter cake, then filter cake is transferred in isostatic pressing machine and is carried out after except iron processing
Suppress to obtain blank.
4. the method for drying in the shade of large scale electric porcelain blank according to claim 1, it is characterised in that: in step (a), raw material group
Point, the mass ratio of mill ball and water be 1:1.5 ~ 2:0.5 ~ 0.8；Ball-milling Time is 8 ~ 10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320549.1A CN110128110A (en) | 2019-04-20 | 2019-04-20 | A kind of method of drying in the shade of large scale electric porcelain blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320549.1A CN110128110A (en) | 2019-04-20 | 2019-04-20 | A kind of method of drying in the shade of large scale electric porcelain blank |
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| Publication Number | Publication Date |
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| CN110128110A true CN110128110A (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910320549.1A Withdrawn CN110128110A (en) | 2019-04-20 | 2019-04-20 | A kind of method of drying in the shade of large scale electric porcelain blank |
Country Status (1)
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| CN (1) | CN110128110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762950A (en) * | 2019-09-18 | 2020-02-07 | 宁波大学 | Method, simulation method and device for dehumidifying porous graphene by high voltage |
-
2019
- 2019-04-20 CN CN201910320549.1A patent/CN110128110A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762950A (en) * | 2019-09-18 | 2020-02-07 | 宁波大学 | Method, simulation method and device for dehumidifying porous graphene by high voltage |
| CN110762950B (en) * | 2019-09-18 | 2020-08-14 | 宁波大学 | Method, simulation method and device for dehumidifying porous graphene by high voltage |
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Application publication date: 20190816 |
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