CN101514098A - Method for selection and proportioning of raw materials of 300,420kN grades suspension porcelain insulator blank - Google Patents
Method for selection and proportioning of raw materials of 300,420kN grades suspension porcelain insulator blank Download PDFInfo
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- CN101514098A CN101514098A CNA2009101024888A CN200910102488A CN101514098A CN 101514098 A CN101514098 A CN 101514098A CN A2009101024888 A CNA2009101024888 A CN A2009101024888A CN 200910102488 A CN200910102488 A CN 200910102488A CN 101514098 A CN101514098 A CN 101514098A
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Abstract
Raw materials of the porcelain insulator blank comprise kaolinite type clay, kaolinite type crucible clay, quartz type clay, kaolinite and sericite type clay and the like. 15 to 25 % of kaolinite type clay, 10 to 25 % of kaolinite type crucible clay, 20 to 30% of quartz type clay, 5 to 10%of kaolinite and sericite type clay, 15 to 25% of feldspar, 30 to 45% of calcined alumina, 1 to 2% of plasticizer are mixed uniformly, wherein the particle size of each clay raw material is 20 to 40 mushes. The 300,420kN grades suspension porcelain insulator is prepared by mixing, ball-milling, blank-producing and sintering at the temperature of 1200 to 1350 DEG C, the qualified rate of the porcelain insulator is more than 80%, which completely accords with the international and IEC standard.
Description
Technical field
The present invention relates to a kind of alumino-silicate materials, be specially adapted to 300,420kN (thousand newton) grade transmission line of alternation current is with suspended porcelain insulator blank raw material selection and matching method.
Background technology
Strategy implementation along with China's " transferring electricity from the west to the east, interconnected, north and south, the whole nation supply mutually ", country is to the great attention of ultra-high voltage, extra-high voltage technical development and the home-made equipment that matches, the high tonnage of following China, large vol long-distance transmission circuit are more and more, and 300, the demand in 420kN grade suspended porcelain insulator future also increases thereupon.According to the statistics made by the departments concerned: domestic annual requirement to high-strength suspension porcelain insulator is about ten million ton.
Suspended porcelain insulator is that a kind of porcelain body is based on glassy phase by multiple clay class starting material mixing, nearly 20 kinds of mineral compositions, through the alumino-silicate materials that the prepared and the sintering of complexity forms, and crystallization phases has corundum, mullite, quartz and feldspar etc.It is high pressure resistant, acidproof, anticorrosive and high transmitting line that is used to of intensity with it, is referred to as " lifeline " of transmitting line.
Its core of porcelain insulator is insulation and supports, no matter is organic or its task of the insulator of inorganic materials is all identical.The insulation task is to finish jointly with transmitting line ambient air basically.So what be concerned about most when in GB and International Power committee (IEC) the insulator pattern being checked is that some strength grades can how play insulating effect under the condition, i.e. insulation breakdown.Porcelain insulator is in the transmitting line operational process, and insulation will be destroyed when strength of electric field was raised to some values, is referred to as to insulate breakdown or discharge.Its porcelain of porcelain insulator is a hard brittle material, and the intensity of bearing stress in transmitting line is to bear tens of times of tensile stress, and stressed be many-sided, weight, tension force, regelation weight, wind-force, vibration and the electric power etc. of transmission pressure are arranged.For porcelain insulator, must possess higher intensity as bending strength, tensile strength and electromechanical failure load or the like, more intensity is to act on simultaneously with electromechanical properties, normally examine the intensity of porcelain insulator with dynamo-electric rupture test, the porcelain performance of insulator depends on the selection and the technology of raw material types.
In the existing porcelain insulator manufacturing process, to the high-strength porcelain insulator blank choices of raw materials, usually Zuoyun, the Shanxi clay (accompanying drawing 1) of following or recommending with reference to industry, this clay X-ray diffraction (XRD) detects and shows: based on kaolinite, quartz, small amounts of mineral has montmorillonite, illite, hornblende, anatase octahedrite, feldspar, iron mineral etc., host kaolinite and quartzy total content have reached 85～90%, and quartz content is higher, and content is 20～40%.Kaolinite and quartzy principal constituent SiO
2And Al
2O
3It is the main component of producing electric porcelain insulator.And poor mineral are except that illite and feldspar, other mineral especially the content of montmorillonite, chlorite, iron mineral etc. less than 5%.But from the mineral origin cause of formation, mineral species and content difference are bigger in the different raw clay in the place of production.Though the Zuoyun clay is good but reserves are limited, if the strange land seek with the identical thing of Zuoyun clay mutually, the clay of composition and overall target is impossible.With the up to ten million ton estimations of the annual requirement of electric porcelain insulator, only use the Zuoyun clay far can not satisfy the demand of domestic each electroceramics producer, and this raw material has been tending towards exhausted at present.Also have the industry personage to know very well, enterprise was once arranged at home, cause heavy economic losses for the electricity consumption zone at country and place owing to uncomfortable product antipollution and the insulating property difference generation serious accident in many transmitting line of causing of choices of raw materials.
Therefore, rationally select for use raw material and strange land to solve high strength electroceramice insulator blank starting material possessionization, become the manufacturing task of top priority of electroceramics.
Summary of the invention
The technical problem to be solved in the present invention is raw-material in short supply at high-strength electroceramics blank, selects for use kaolinite type clay (accompanying drawing 2), kaolinite type earthenware soil (accompanying drawing 3), quartz type clay (accompanying drawing 4) and kaolinite to add sericite type clay raw materials such as (accompanying drawings 5).Wherein kaolinite type clay (or earthenware soil) is different from the Zuoyun clay, and quartz content is lower, only has 10～20%.Can satisfy the electromechanical properties of its porcelain insulator with these clays as high-strength electroceramics blank starting material, sintering goes out 300,420kN grade transmission line of alternation current suspended porcelain insulator.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
At first, selecting principal constituent for use is SiO
2And Al
2O
3Kaolinite type clay, kaolinite type earthenware soil, quartz type clay, kaolinite add the sericite type clay as 300,420kN grade transmission line of alternation current is with suspended porcelain insulator blank starting material.Learn with the XRD detection: the thing phase composite of kaolinite type clay: based on kaolinite, kaolinite content 85～90%, quartz content only have 5～10%, sericite content 5～10%.Small amounts of mineral has montmorillonite, hornblende, anatase octahedrite, feldspar, gibbsite, calcite, iron mineral and amorphousness etc.; The thing phase composite of kaolinite type earthenware soil: based on kaolinite, kaolinite content is more than 90%, and quartz content only has 1～5%, sericite content 1～5%.Small amounts of mineral has montmorillonite, chlorite, hornblende, anatase octahedrite, iron mineral and amorphousness etc.; The thing phase composite of quartz type clay: host is quartzy, and quartz content accounts for more than 95%, anatase octahedrite 1～3%, and small amounts of mineral has montmorillonite, sericite, feldspar and amorphousness etc.; Kaolinite adds the thing phase composite of sericite type clay: host is a kaolinite, content 80～0%, sericite content 10～20%.Small amounts of mineral has montmorillonite, anatase octahedrite, feldspar, iron mineral and amorphousness etc.
Secondly, select for use kaolinite type clay 10～25%, kaolinite type earthenware soil 10～25%, quartz type clay 20～30%, kaolinite to add sericite type clay 5～10%, feldspar 15～25%, calcining bauxitic clay 30～45%, softening agent 1～2%.The granularity of various raw clay is 20～40 orders, granularity 180～200 orders of other raw material.Through mix, ball milling and base, carry out analysis of components again.The following expression of its analysis of components data:
Chemical ingredients is calculated (%)
| SiO 2 | Al 2O 3 | Fe 2O3 | K 2O | Na 2O | CaO | MgO | TiO 2 | IL |
| 40～50 | 45～55 | 0.5～1.0 | 2.0～3.5 | 1.0～1.5 | 0.1～0.5 | 0.1～0.5 | 0.5～2.5 | 4.0～5.5 |
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention 300,420kN grade transmission line of alternation current be with the appearance of suspended porcelain insulator blank raw material selection and matching method, solved the high-strength electric porcelain insulator blank of domestic production raw material and selected a difficult problem with the strange land possessionization for use.Adopt kaolinite type clay, kaolinite type earthenware soil, quartz type clay, kaolinite to add sericite type clay etc. and carry out reasonable proportioning, produce 300,420kN grade transmission line of alternation current suspended porcelain insulator, porcelain insulator whole process qualification rate satisfies GB and International Power committee standard fully more than 80%.
Description of drawings:
Fig. 1 is Zuoyun, a Shanxi clay XRD spectra
Fig. 2 is a kaolinite type clay XRD spectra
Fig. 3 is a kaolinite type earthenware soil XRD spectra
Fig. 4 is a quartz type clay XRD spectra
Fig. 5 adds sericite type clay XRD spectra for kaolinite
Embodiment
Below for implementing concrete processing step of the present invention:
At first select for use kaolinite type clay 10～25%, kaolinite type earthenware soil 10～25%, quartz type clay 20～30%, kaolinite to add sericite type clay 5～10%, feldspar 15～25%, calcining bauxitic clay 30～45%, softening agent 1～2%.The granularity of various raw clay is 20～40 orders, granularity 180～200 orders of other raw material.Through mix, ball milling and base.Carry out analysis of components then, its analysis of components data are as representing:
Chemical ingredients is calculated (%)
| SiO 2 | Al 2O 3 | Fe 2O3 | K 2O | Na 2O | CaO | MgO | TiO 2 | IL |
| 40～50 | 45～60 | 0.5～1.0 | 2.0～3.5 | 1.0～1.5 | 0.1～0.5 | 0.1～0.5 | 0.5～2.5 | 4.0～5.5 |
Specifically be prepared by following processing step, the first step: preparation of raw material, kaolinite type clay 10～25%, kaolinite type earthenware soil 10～25%, quartz type clay 20～30%, kaolinite add sericite type clay 5～10%, feldspar 15～25%, calcining bauxitic clay 30～45%, softening agent 1～2%.The granularity of various raw clay is 20～40 orders, and granularity 180～200 orders of other raw material mix.Second step: ball milling, the mixing raw material that above-mentioned outfit is the good ball mill of packing into, material: ball: water=0.8～1.3: 1～2.5: 1～3 carries out ball milling, and the time is 10～20 hours.The 3rd step: the fineness screening, fineness requirement is at 180～320 mesh screen residues 0.1～1.0%.The 4th step: raw material is old, and the mud section after will extruding through pug mill enters Ni Ku, the old process of beginning pug.Because kaolinite type clay content is higher, runs into the higher or on the low side excessive pug of moisture and will pile the storehouse separately, to pick out as the excessive pug of moisture deviation in the mud extraction process, the mud storehouse temperature is about 15 degree, and the pug shelf-time is not less than 48 hours.The 5th step: moulding, at first according to GB and International Power committee (IEC) standard fabrication 300,420kN grade porcelain insulator mould, then that vacuum pugging is good mud Duan Sheng goes into mould and carries out pressed compact, repaired biscuit.The 6th step: glazing, to the green compact glazing of making.The 8th step: sintering sinters porcelain in 1200～1350 ℃ of scopes of temperature.
Claims (3)
1, a kind of 300,420kN grade suspended porcelain insulator blank raw material selection and matching method, utilize kaolinite type clay, kaolinite type earthenware soil, quartz type clay, kaolinite to add the sericite type raw clay, according to certain thing mutually and composition proportion, sintering go out 300,420kN grade transmission line of alternation current suspended porcelain insulator.It is characterized in that selecting for use kaolinite type clay 10～25%, kaolinite type earthenware soil 10～25%, quartz type clay 20～30%, kaolinite to add sericite type clay 5～10%, feldspar 15～25%, calcining bauxitic clay 30～45%, softening agent 1～2%, the granularity of various raw clay is 20～40 orders.
2, according to a kind of 300,420kN grade suspended porcelain insulator blank raw material selection under the claim 1 and matching method, it is as shown in the table to it is characterized in that the analysis of components data:
Chemical ingredients is calculated (%)
3, according to a kind of 300,420kN grade suspended porcelain insulator blank raw material selection under claim 1 and 2 and matching method, it is characterized in that this grade porcelain insulator sintering temperature is at 1200～1350 ℃.
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| CNA2009101024888A CN101514098A (en) | 2009-03-26 | 2009-03-26 | Method for selection and proportioning of raw materials of 300,420kN grades suspension porcelain insulator blank |
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|---|---|---|---|
| CNA2009101024888A CN101514098A (en) | 2009-03-26 | 2009-03-26 | Method for selection and proportioning of raw materials of 300,420kN grades suspension porcelain insulator blank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857424A (en) * | 2010-05-27 | 2010-10-13 | 中国科学院地球化学研究所 | Method for selecting and proportioning blank raw materials of 550kN grade suspension type porcelain insulator |
| CN102674814A (en) * | 2011-10-12 | 2012-09-19 | 中材高新材料股份有限公司 | 1100KV rod post porcelain insulator |
| CN102924048A (en) * | 2012-11-14 | 2013-02-13 | 陈启军 | Moderate-strength electric porcelain product and manufacturing method thereof |
| CN108996996A (en) * | 2018-09-29 | 2018-12-14 | 中博信（大连）新能源科技有限公司 | A kind of power promotes the silicate electroceramics ball and preparation method thereof of fuel-economizing |
| CN110194656A (en) * | 2019-04-30 | 2019-09-03 | 江西新龙电瓷电器制造有限公司 | A kind of middle high strength insulator material prescription and preparation method thereof |
-
2009
- 2009-03-26 CN CNA2009101024888A patent/CN101514098A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857424A (en) * | 2010-05-27 | 2010-10-13 | 中国科学院地球化学研究所 | Method for selecting and proportioning blank raw materials of 550kN grade suspension type porcelain insulator |
| CN102674814A (en) * | 2011-10-12 | 2012-09-19 | 中材高新材料股份有限公司 | 1100KV rod post porcelain insulator |
| CN102924048A (en) * | 2012-11-14 | 2013-02-13 | 陈启军 | Moderate-strength electric porcelain product and manufacturing method thereof |
| CN102924048B (en) * | 2012-11-14 | 2013-12-11 | 陈启军 | Moderate-strength electric porcelain product and manufacturing method thereof |
| CN108996996A (en) * | 2018-09-29 | 2018-12-14 | 中博信（大连）新能源科技有限公司 | A kind of power promotes the silicate electroceramics ball and preparation method thereof of fuel-economizing |
| CN110194656A (en) * | 2019-04-30 | 2019-09-03 | 江西新龙电瓷电器制造有限公司 | A kind of middle high strength insulator material prescription and preparation method thereof |
| CN110194656B (en) * | 2019-04-30 | 2021-12-03 | 江西新龙电瓷电器制造有限公司 | Medium-high strength insulator material formula and preparation method thereof |
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Open date: 20090826 |