CN104452428A - Production method of calcining type high-voltage-resisting mica paper - Google Patents
Production method of calcining type high-voltage-resisting mica paper Download PDFInfo
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- CN104452428A CN104452428A CN201410651639.6A CN201410651639A CN104452428A CN 104452428 A CN104452428 A CN 104452428A CN 201410651639 A CN201410651639 A CN 201410651639A CN 104452428 A CN104452428 A CN 104452428A
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Abstract
The invention provides a production method of calcining type high-voltage-resisting mica paper. The production method comprises the following steps: calcining mica materials; carrying out hydraulic peeling pulping; sieving for dehydrating; carrying out cyclone graded concentration; and making pulp into the high-voltage-resisting mica paper. The production method is characterized in that after the step of calcining the mica materials and before the step of carrying out the hydraulic peeling pulping, the mica materials are steamed at a high temperature. The mica paper produced by adopting the method has the strong electric strength, great tensile strength and good air permeability; a making process flow is simple and the utilization rate of the mica is greatly increased; and equipment is not corroded, and the pollution to water and the peripheral environment is not caused.
Description
Technical field
The present invention relates to mica insulator production technical field, particularly the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type.
Background technology
Mica is a kind of laminar silicic acid salt mineral of Nature creating, there is excellent physical property and electric property and still keep excellent physical property and the characteristic of electric property at high operating temperatures, it has chemical inertness and low flammability completely, the most important thing is that it has anti-high voltage, corona-resistant and radiation-resistant characteristic, and there is the features such as nontoxic, tasteless, ageing-resistant, corrosion-resistant.
Mica paper is by the processing and manufacturing of MICA material, and mica paper maintains the premium properties of natural mica, and thickness is even, and dielectric strength fluctuation range is little, and corona inception voltage is high and stable, and heat conductivility is good.
The method of producing mica paper in prior art mainly contains two kinds: one is mechanical pulping method, and technological process is material of selecting materials, wash, waterpower divides decorticating slurry, screening and dewatering, Process by Classified Thickening, with slurryly manufacture paper with pulp, and the mica paper of production is commonly referred to as raw powder mica paper; Another kind is chemical pulping method, and the technological process of production is calcining, and the burning-off crystallization water, removes impurity, acidleach, waterpower divides decorticating to starch, screening and dewatering, Process by Classified Thickening, with slurryly to manufacture paper with pulp, the mica paper of production is commonly referred to as ripe mica paper.
The raw powder mica paper that the first mechanical pulping method is produced, electrical strength and TENSILE STRENGTH are not higher, and permeability is not strong; The ripe mica paper that the second chemical pulping method is produced, although the air permeability of mica paper, withstand voltagely to increase, but technological process is complicated, operation is loaded down with trivial details, mica utilization rate decreases, steeped not open by the mica material part of acid soak, all cannot utilize, particularly the easy etching apparatus of acid soak mica material, and have serious pollution to water and environment around.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of manufacture method of high voltage mica paper is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is as follows:
The manufacture method of the high voltage withstanding mica paper of a kind of calcinated type: first mica material is calcined, waterpower divides decorticating slurry, screening and dewatering, Process by Classified Thickening again, then with slurryly high voltage withstanding mica paper is manufactured paper with pulp into, it is characterized in that: after the calcining of mica material, mica material is carried out thermophilic digestion before dividing decorticating to starch by waterpower.
The manufacture method of the described high voltage withstanding mica paper of a kind of calcinated type: mica material is loaded calcining furnace, and every stove 10-12 kilogram, calcining heat is 750-850 DEG C, and calcination time is 1-2 hour, and mica material loses the crystallization water by calcining, obtains mica grog.
The manufacture method of the described high voltage withstanding mica paper of a kind of calcinated type, mica grog after calcining is carried out thermophilic digestion 50-60 minute at 90-100 DEG C, pass through boiling, mica material absorbs water, being easy to waterpower divides decorticating to starch, and can obtain the desirable laminar lodicule of radius-thickness ratio of more than 85%, make mica pulping rate bring up to more than 85% from original 60%, paper forming rate brings up to 95% from 80%, and greatly can improve electric property, the heat resistance of mica paper.
The manufacture method of the described high voltage withstanding mica paper of a kind of calcinated type, is divided decorticating slurry, screening and dewatering, Process by Classified Thickening by the mica material after boiling by waterpower, is with slurryly manufactured paper with pulp into high voltage withstanding mica paper.
The manufacture method of the described high voltage withstanding mica paper of a kind of calcinated type, it is characterized in that: waterpower divide decorticating starch be by boiling after mica material drop into pulper from feeding cylinder, mica material after water suction is sunken to pulper fragmentation portion, being easy to waterpower divides decorticating to starch, be under the effect of 1.5-1.8Mpa high-pressure spray water at pressure, mica material High Rotation Speed in pulper, collides, rubs, by mica raw material along separating the inside point stripping, make mica lodicule.
The cloud paper electrical strength adopting this method to produce is high, TENSILE STRENGTH large, and permeability is good, and fabrication processing is simple, and mica utilization rate has raising very greatly, does not corrode equipment, does not pollute water and environment around.
Detailed description of the invention
The present invention relates to the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type:
The first step is calcined by mica material, carry out hand sorting before calcination, weathering mica, iron rust mica, ore and impurity thereof are carried out picking up eliminating, then calcine in calcining furnace, each stove once calcines 10-12 kilogram, calcining mica carries out under 750-850 DEG C of high temperature, calcination time is 1-2 hour, after burning the crystallization water, screens out sand and soil dust with iron, after removing these impurity, obtain mica grog.
Second step be by calcining after mica grog at 90-100 DEG C, carry out thermophilic digestion 50-60 minute, pass through boiling, sandstone in further eliminating mica material and impurity, improve the purity of mica material and the voltage withstand class of mica paper, absorb water after the boiling of mica material, drop into pulper from feeding cylinder, be sunken to pulper fragmentation portion, be easy to waterpower and divide stripping.
Mica material after boiling is carried out waterpower and divides stripping, screening and dewatering, Process by Classified Thickening, with slurryly manufactures paper with pulp into high voltage withstanding mica paper by the 3rd step.
So-called waterpower divide stripping mica material be by boiling after mica material drop into pulper from feeding cylinder, pulper carries out waterpower to mica material and divides decorticating to starch, mica material is under the effect of high-pressure water jet, High Rotation Speed in pulper, collide, rub, by mica raw material along separating the inside point stripping, thus the laminar lodicule that the radius-thickness ratio of acquisition more than 85% is desirable, mica pulping rate is made to bring up to 85% from original 60%, paper forming rate brings up to 95% from 80%, and greatly can improve the stability of the electric property of mica tape, heat resistance and quality.
The manufacture method of the described high voltage withstanding mica paper of a kind of calcinated type, screening and dewatering divides the mica phosphorus sheet after stripping to send into screening and dewatering device waterpower, mica phosphorus sheet is divided into various granularity level and despumation further.
Process by Classified Thickening carries out classification process dividing the mica phosphorus sheet after stripping to send into vortrap through waterpower, by mica phosphorus sheet and large mica splitting and magazins' layout, select high-quality granulated mica phosphorus sheet as papermaking refining through twice classification process, finally carry out dehydration and concentrate.
With slurry manufacturing paper with pulp is the mica refining after concentrating that will dewater, the mica pulp that concentration is 8-10% is mixed with in stock tank, compound starching mode is finally taked to manufacture paper with pulp into mica paper, namely electrostatic interaction between mica lodicule is utilized mutually to overlap, i.e. one deck thin slice overlap joint, staggered starching filled by one deck powder slurry, improves the uniformity and compressive resistance like this under the prerequisite not reducing other performance.
Claims (8)
1. the manufacture method of the high voltage withstanding mica paper of calcinated type, first mica material is calcined, carry out waterpower again and divide decorticating slurry, screening and dewatering, Process by Classified Thickening, then with slurryly high voltage withstanding mica paper is manufactured paper with pulp into, it is characterized in that: after the calcining of mica material, mica material is carried out thermophilic digestion before dividing decorticating to starch by waterpower.
2. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1, it is characterized in that: the calcining of mica material is loaded in calcining furnace by mica material to calcine, every stove 10-12 kilogram, calcining heat is 750-850 DEG C, calcination time is 1-2 hour, mica material loses the crystallization water by calcining, obtains mica grog.
3. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1,2, is characterized in that: the mica grog after calcining is carried out thermophilic digestion 50-60 minute at 90-100 DEG C, and by boiling, mica material absorbs water, and is easy to waterpower and divides stripping slurry.
4. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1,3, is characterized in that: the mica material after boiling is divided decorticating slurry, screening and dewatering, Process by Classified Thickening by waterpower, with slurryly manufactured paper with pulp into high voltage withstanding mica paper.
5. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 4, it is characterized in that: waterpower divide decorticating starch be by boiling after mica material drop into pulper from feeding cylinder, mica material after water suction is sunken to pulper fragmentation portion, be under the effect of 1.5-1.8Mpa high-pressure spray water at pressure, mica material High Rotation Speed in pulper, colliding, rub, by mica raw material along separating the inside point stripping, making mica lodicule.
6. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1, is characterized in that: screening and dewatering divides the mica phosphorus sheet after stripping to send into screening and dewatering device waterpower, mica phosphorus sheet is divided into various granularity level and despumation further.
7. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1, it is characterized in that: Process by Classified Thickening carries out classification process dividing the mica phosphorus sheet after stripping, screening and dewatering to send into vortrap through waterpower, finally carries out dehydration and concentrate.
8. the manufacture method of the high voltage withstanding mica paper of a kind of calcinated type according to claim 1, it is characterized in that: with slurry manufacturing paper with pulp is the mica refining after concentrating that will dewater, in stock tank, be mixed with the mica pulp that concentration is 8-10%, finally take compound starching mode to manufacture paper with pulp into mica paper.
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| CN201410651639.6A CN104452428A (en) | 2014-11-17 | 2014-11-17 | Production method of calcining type high-voltage-resisting mica paper |
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| CN201410651639.6A CN104452428A (en) | 2014-11-17 | 2014-11-17 | Production method of calcining type high-voltage-resisting mica paper |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996053A (en) * | 2017-03-17 | 2017-08-01 | 湖北平安电工材料有限公司 | A kind of high heat conduction mica paper manufacture method |
| CN111648152A (en) * | 2020-05-28 | 2020-09-11 | 湖北平安电工股份有限公司 | Production method of high-density mica paper |
| CN112071530A (en) * | 2020-08-26 | 2020-12-11 | 湖北平安电工股份有限公司 | Preparation method of calcined fire-resistant mica tape |
| CN112144318A (en) * | 2020-09-24 | 2020-12-29 | 湖北中天云母制品股份有限公司 | Method for manufacturing overlong mica paper |
| CN114622437A (en) * | 2022-03-18 | 2022-06-14 | 湖南荣泰新材料科技有限公司 | Method for preparing composite mica paper by using mica paper waste |
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| US3721750A (en) * | 1970-01-27 | 1973-03-20 | Ty Lok Assembly Systems Inc | Strapping fastener |
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| CN102127882A (en) * | 2010-11-11 | 2011-07-20 | 杭州凯尔云母制品有限公司 | Manufacturing method of ultra-high voltage insulation cooked mica paper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996053A (en) * | 2017-03-17 | 2017-08-01 | 湖北平安电工材料有限公司 | A kind of high heat conduction mica paper manufacture method |
| CN111648152A (en) * | 2020-05-28 | 2020-09-11 | 湖北平安电工股份有限公司 | Production method of high-density mica paper |
| CN112071530A (en) * | 2020-08-26 | 2020-12-11 | 湖北平安电工股份有限公司 | Preparation method of calcined fire-resistant mica tape |
| CN112144318A (en) * | 2020-09-24 | 2020-12-29 | 湖北中天云母制品股份有限公司 | Method for manufacturing overlong mica paper |
| CN112144318B (en) * | 2020-09-24 | 2023-03-31 | 湖北中天云母制品股份有限公司 | Method for manufacturing overlong mica paper |
| CN114622437A (en) * | 2022-03-18 | 2022-06-14 | 湖南荣泰新材料科技有限公司 | Method for preparing composite mica paper by using mica paper waste |
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Application publication date: 20150325 |