CN1325407C - Synthesis of wollastonite fibre and method for preparing same - Google Patents
Synthesis of wollastonite fibre and method for preparing same Download PDFInfo
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- CN1325407C CN1325407C CNB2005100066508A CN200510006650A CN1325407C CN 1325407 C CN1325407 C CN 1325407C CN B2005100066508 A CNB2005100066508 A CN B2005100066508A CN 200510006650 A CN200510006650 A CN 200510006650A CN 1325407 C CN1325407 C CN 1325407C
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- wollastonite
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- 239000000835 fiber Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000010456 wollastonite Substances 0.000 title claims description 37
- 229910052882 wollastonite Inorganic materials 0.000 title claims description 37
- 230000015572 biosynthetic process Effects 0.000 title description 3
- 238000003786 synthesis reaction Methods 0.000 title description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 16
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 16
- 239000010703 silicon Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 230000004927 fusion Effects 0.000 claims description 15
- 239000006004 Quartz sand Substances 0.000 claims description 14
- 239000011044 quartzite Substances 0.000 claims description 14
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 12
- 238000010891 electric arc Methods 0.000 claims description 9
- 239000005995 Aluminium silicate Substances 0.000 claims description 8
- 235000012211 aluminium silicate Nutrition 0.000 claims description 8
- 239000010433 feldspar Substances 0.000 claims description 8
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 abstract description 7
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 235000012241 calcium silicate Nutrition 0.000 abstract 5
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 5
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 235000019402 calcium peroxide Nutrition 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 239000012779 reinforcing material Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 5
- 239000000391 magnesium silicate Substances 0.000 description 5
- 229910052919 magnesium silicate Inorganic materials 0.000 description 5
- 235000019792 magnesium silicate Nutrition 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 241000024287 Areas Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Inorganic Fibers (AREA)
Abstract
The present invention discloses a synthetic grammite fiber, which is made by using the process: limestone and natural grammite or material containing silicon which are used as raw material are molten by heating at 1300 to 1800 DEG C under the action of a fluxing medium, and then the molten raw material is blown into the fiber by using high pressure air, or is flung into the fiber by using the centrifugal action of a fiber flinging machine. The grammite fiber comprises components shown in type of oxides as follows: 25.8 to 54.9 wt% of CaO2, 44.5 to 72.1 wt% of SiO2, and 1.0 to 5.0 wt% of impurity oxides. The synthetic grammite fiber has the characteristics of tensile strength of 25*10<2>MPa to 35*10<2>MPa, fiber diameter of 2 to 15 micrometers, fiber length of 10 to 15 millimeters, apparent density of 0.06 to 0.14 g/cm<3>, and heat conductivity of 13 to 14 W/m*K at 300 DEG C. Products of the synthetic grammite fiber which can be used as heat insulation and refractory material, brake sheet material and filling and reinforcing material of building, are ideal products for replacing asbestos.
Description
Technical field
The present invention relates to a kind of asbestos equivalent material, particularly a kind of synthesis of wollastonite fibre that contains the wollastonite composition.
Background technology
Fibrous magnesium silicate is harmful, and many countries ban use of, and now partly substitutes with natural wollastonite, still, because the fiber of natural wollastonite is short, has limited its application in some aspects, thereby can not replace asbestos fully.As a kind of equipment of making needle shape wollastonite powder is provided among the Chinese patent ZL01211905.9, though natural wollastonite can be processed into the wollastonite powder with certain limit length-to-diameter ratio, but the wollastonite powder that this method that only depends on physical pulverization is processed into, its limited length-to-diameter ratio has limited its application in some aspects; Chinese patent 87108257 discloses a kind of method for making alkali-resisting glass fiber preparation method, be with material mixed meltings such as wollastonite and magnesium oxide, aluminum oxide, make glass fibre, because this fiber has only been considered its alkali resistance, its heat conductance is poor, tensile strength is low, can not satisfy the requirement of aspects such as replacing asbestos are used to be incubated, fire-resistant and brake pad material, therefore this fiber also only limits the use of in cement, increases cement intensity as supporting material; Exist cost height, shortcoming that the scope of application is little simultaneously.Chinese patent 89102037.3 alkali resisting glass fibers are formed, and it exists the shortcoming of above-mentioned patent equally.Therefore, seek and produce harmless, as to have better tensile strength and higher heat-conductivity macrofiber mineral and replace fibrous magnesium silicate fully, extremely urgent.
Summary of the invention
The present invention blows to pull into and meets the wollastonite macrofiber that the asbestos purposes requires index by fused wollastonite or fused being contained siliceous raw material and Wingdale, reaches the purpose that replaces asbestos fully.
The technical solution adopted for the present invention to solve the technical problems is: a kind of synthetic wollastonite fibre is provided, and the chemical constitution that contains 95-99 weight % in the fiber is (CaO)
1.2-2.0(SiO
2)
1.5-2.5Calucium Silicate powder, each component in oxide compound (wt%) is in the wollastonite fibre:
CaO 25.8～54.9
SiO
2 42.3～72.1
Oxide impurity 1.0～5.0
Wherein oxide impurity is Fe
2O
3, MgO, B
2O
3, Na
2O and Al
2O
3In at least a;
The performance index of wollastonite fibre are as follows:
Fibre diameter: 2～15 microns;
Staple length: 10～150 millimeters;
Apparent density: 0.06～0.14g/cm
3
Tensile strength: 25 * 10
2MPa～35 * 10
2MPa;
300 ℃ of following thermal conductivity: 13～14W/mK.
The method of this wollastonite fibre is to be raw material with natural wollastonite and fusing assistant, or is raw material with silicon-containing material, Wingdale and fusing assistant, and may further comprise the steps:
5) raw material powder is broken into particle;
6) particle is put in tank furnace or electric arc furnace or the resistance furnace melted;
7), utilize the air blown melt of 2-8 standard atmospheric pressure to become silk or become silk by centrifugation with tumbling machine in the fusion exit;
8) fiber that becomes silk to obtain enters collector and promptly gets the wollastonite fibre finished product;
Wherein the part by weight of fusing assistant is 1～5% in the raw material, and fusing assistant is selected from CaF
2, B
2O
3And Na
2At least a among the O, silicon-containing material is selected from least a in quartzite, quartz sand, feldspar, kaolin and the diatomite, for example can be quartz sand,, quartzite, quartz sand and kaolin mixture, quartz sand and diatomaceous mixture, quartzite and feldspar mixture, quartzite and diatomite mixture; Also can be quartzite, feldspar and diatomite mixture, or quartz sand, diatomite and kaolin mixture.Temperature of fusion during fusing is 1300～1800 ℃, and particle is when putting in the tank furnace, and raw material is crushed to below 0.5 millimeter, when being put in electric arc furnace or the resistance furnace, is crushed to below 10 millimeters.
In the method for making of above-mentioned wollastonite fibre, process furnace can be to be the tank furnace of fuel with Sweet natural gas, coal gas or heavy oil; Also can be to be resistance furnace, electricity frequency stove or the electric arc furnace of heating energy source with the electricity.When preparing wollastonite fibre with tank furnace, the aspect ratio of control tank furnace is 1-3; Feed way behind the heating and melting, flows out into silk for once filling up tank furnace then.When preparing wollastonite fibre with resistance furnace, electricity frequency stove or electric arc furnace, the aspect ratio of control electric furnace is 3-6; Feed way is for to fill up 1/3rd of stove earlier, and heating and melting along with after molten materials flows out into silk, adds then gradually, can carry out continuous production; Also can once fill up stove, behind the heating and melting, flow out into silk then.When being raw material with Wingdale, should be heated rapidly to 800 ℃ earlier after, slowly be heated to the temperature fusion that needs then, with the material ejection that prevents that carbonic acid gas from may cause when overflowing.The proportioning of silicon-containing material is little to the performance impact of product, when the product of preparation specific composition, and each components contents in the various silicon-containing materials of first analytical calculation, the consumption of silicon-containing material is determined in the requirement of each component concentration in the bonded products.
Every technical indicator of wollastonite fibre of the present invention, all reach or be better than the index of fibrous magnesium silicate, compare with other asbestos substitute products such as rock wool, tensile strength and thermal conductivity height, can be used for all Application Areass that fibrous magnesium silicate can relate to, and better effects if, can satisfy the needs that substitute fibrous magnesium silicate fully, have good economic benefit and social benefit, have promotional value.
Below the present invention will be further described with example.
Embodiment
Be expressed as (weight percent): CaO25.8～54.9, SiO for composition of the present invention with the form of oxide compound
242.3～72.1, the wollastonite fibre of oxide impurity 1.0～5.0 can be produced with different production technique with different starting material.
Embodiment 1: produce with tank furnace.A, get natural wollastonite 950kg, CaF
230kg, B
2O
320kg is broken into powder below 0.5 millimeter with these raw material powder; B, raw material powder is dropped in the tank furnace, be heated to 1350-1500 ℃ of fusion; C, in the fusion exit, utilize the high-pressure air of 6-8 standard atmospheric pressure to jet into silk; The fiber of d, Cheng Sihou enters collector, then compression packing.The main component of product is expressed as (weight percent): CaO39.2, SiO with the form of oxide compound
257.6, MgO0.9, B in the oxide impurity
2O
31.7, Fe
2O
30.6.The product technology parameter is: tensile strength: 28 * 10
2Mpa, Fibre diameter: 2～4 microns, staple length: 130～150 millimeters; Apparent density: 0.12g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Embodiment 2: produce with resistance furnace.A, get natural wollastonite 990kg, CaF
210kg is broken into particle below 10 millimeters with these raw material powder; B, raw material powder is dropped in the resistance furnace, be heated to 1500-1600 ℃ of fusion; C, in the fusion exit, get rid of into silk with tumbling machine by centrifugation; The fiber of d, Cheng Sihou enters collector, then compression packing.The main component of product is expressed as (weight percent): CaO40.9, SiO with the form of oxide compound
257.9, oxide impurity MgO0.7, Fe
2O
30.5.The product technology parameter is: tensile strength: 29 * 10
2Mpa, Fibre diameter: 12～15 microns, staple length: 120～140 millimeters; Apparent density: 0.12g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Embodiment 3: produce with tank furnace.A, get quartz sand 720kg, Wingdale 470kg, CaF
220kg, Na
2O10kg is broken into powder below 0.5 millimeter with these raw material powder; B, raw material powder is dropped in the tank furnace, be heated to 1400-1500 ℃ of fusion; C, in the fusion exit, get rid of into silk with tumbling machine by centrifugation; The fiber of d, Cheng Sihou enters collector, then compression packing.The main component of product is expressed as (weight percent): CaO26.0, SiO with the form of oxide compound
272.0, MgO1.0, Na in the oxide impurity
2O1.2, Fe
2O
30.7.The product technology parameter is: tensile strength: 35 * 10
2Mpa, Fibre diameter: 2～4 microns, staple length: 70～90 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 14W/mK.
Embodiment 4: produce with tank furnace.A, get quartz sand 320kg, kaolin 200kg, Wingdale 980kg, CaF
220kg is broken into powder below 0.5 millimeter with these raw material powder; B, raw material powder is dropped in the tank furnace, be heated to 1500-1600 ℃ of fusion; C, in the fusion exit, utilize the high-pressure air of 2-4 standard atmospheric pressure to jet into silk; The fiber of d, Cheng Sihou enters collector, then compression packing.The main component of product is expressed as (weight percent): CaO54.8, SiO with the form of oxide compound
243.0, MgO0.4, Al in the oxide impurity
2O
31.2, Fe
2O
30.6.The product technology parameter is: tensile strength: 35 * 10
2Mpa, Fibre diameter: 4～5 microns, staple length: 90～100 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 14W/mK.
Embodiment 5: produce with electric arc furnace.A, get quartzite 420kg, diatomite 300kg, feldspar 50kg, Wingdale 660kg, CaF
220kg is broken into powder below 10 millimeters with these raw material powder; B, raw material powder is dropped in the electric arc furnace, be heated to 1700-1800 ℃ of fusion; C, in the fusion exit, utilize the high-pressure air of 4-6 standard atmospheric pressure to jet into silk; The fiber of d, Cheng Sihou enters collector, then compression packing.The main component of product is expressed as (weight percent): CaO38.8, SiO with the form of oxide compound
256.3, MgO0.8, Al in the oxide impurity
2O
32.4, Fe
2O
30.2, Na
2O1.5.The product technology parameter is: tensile strength: 32 * 10
2Mpa, Fibre diameter: 4～5 microns, staple length: 130～150 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Embodiment 6: produce with electric arc furnace.Get quartzite 620kg, feldspar 100kg, Wingdale 650kg, CaF
220kg makes wollastonite fibre as embodiment 5, and the main component of product is expressed as (weight percent): CaO39.2, SiO with the form of oxide compound
254.6, MgO0.2, Al in the oxide impurity
2O
31.1, Fe
2O
30.7, Na
2O2.7, Al
2O
31.5.The product technology parameter is: tensile strength: 32 * 10
2Mpa, Fibre diameter: 2～4 microns, staple length: 130～150 millimeters; Apparent density: 0.06g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Embodiment 7: produce with tank furnace.Get quartzite 320kg, diatomite 200kg, Wingdale 940kg, CaF
220kg makes wollastonite fibre as embodiment 4, and the main component of product is expressed as (weight percent): CaO54.2, SiO with the form of oxide compound
243.8, MgO0.5, Al in the oxide impurity
2O
31.2, Fe
2O
30.5.The product technology parameter is: tensile strength: 35 * 10
2Mpa, Fibre diameter: 4～5 microns, staple length: 90～100 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 14W/mK.
Embodiment 8: produce with tank furnace.Get quartzite 720kg, Wingdale 470kg, CaF
220kg, Na
2O10kg makes wollastonite fibre as embodiment 3, and the main component of product is expressed as (weight percent): CaO36.0, SiO with the form of oxide compound
260.1, MgO1.6, Na in the oxide impurity
2O1.4, Fe
2O
30.9.The product technology parameter is: tensile strength: 35 * 10
2Mpa, Fibre diameter: 2～4 microns, staple length: 70～90 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 14W/mK.
Embodiment 9: produce with resistance furnace.Get quartz sand 390kg, diatomite 200kg, Wingdale 720kg, CaF
210kg, embodiment 2 makes wollastonite fibre.The main component of product is expressed as (weight percent): CaO40.9, SiO with the form of oxide compound
257.3, oxide impurity MgO0.7, Fe
2O
30.5, Na
2O0.6.The product technology parameter is: tensile strength: 29 * 10
2Mpa, Fibre diameter: 5～7 microns, staple length: 130～150 millimeters; Apparent density: 0.07g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Embodiment 10: produce with resistance furnace.Get quartz sand 380kg, diatomite 220kg, kaolin 60kg, Wingdale 720kg, CaF
210kg, embodiment 2 makes wollastonite fibre.The main component of product is expressed as (weight percent): CaO40.2, SiO with the form of oxide compound
258.0, oxide impurity MgO0.8, Fe
2O
30.5, Na
2O0.5.The product technology parameter is: tensile strength: 35 * 10
2Mpa, Fibre diameter: 7～8 microns, staple length: 130～150 millimeters; Apparent density: 0.14g/cm
3300 ℃ of following thermal conductivity: 13W/mK.
Claims (10)
1. synthetic wollastonite fibre is characterized in that: the chemical constitution that contains 95-99 weight % in the fiber is (CaO)
1.0-2.0(SiO
2)
1.5-2.5Calucium Silicate powder, each component is counted with oxide weight percentage ratio in the wollastonite fibre:
CaO 25.8～54.9
SiO
2 42.3～72.1
Oxide impurity 1.0～5.0
Wherein oxide impurity is Fe
2O
3, MgO, B
2O
3, Na
2O and Al
2O
3In at least a;
The performance index of wollastonite fibre are as follows:
Fibre diameter: 2～15 microns;
Staple length: 10～50 millimeters;
Apparent density: 0.06～0.14g/cm
3
Tensile strength: 25 * 10
2MPa～35 * 10
2MPa;
300 ℃ of following thermal conductivity: 13～4W/mK.
2. method for preparing the wollastonite fibre of claim 1 is to be raw material with natural wollastonite and fusing assistant, or is raw material with silicon-containing material, Wingdale and fusing assistant, and may further comprise the steps:
1) raw material powder is broken into particle;
2) particle is put in tank furnace or electric arc furnace or the resistance furnace melted;
3), utilize the air blown melt of 2-8 standard atmospheric pressure to become silk or become silk by centrifugation with tumbling machine in the fusion exit;
4) fiber that becomes silk to obtain enters collector and promptly gets the wollastonite fibre finished product;
Wherein the part by weight of fusing assistant is 1～5% in the raw material, and fusing assistant is selected from CaF
2, B
2O
3And Na
2At least a among the O, silicon-containing material is selected from least a in quartzite, quartz sand, feldspar, kaolin and the diatomite, temperature of fusion during fusing is 1300～1800 ℃, and when particle is put in the tank furnace, raw material is crushed to below 0.5 millimeter, when being put in electric arc furnace or the resistance furnace, be crushed to below 10 millimeters.
3. method as claimed in claim 2, wherein silicon-containing material is a quartz sand.
4. method as claimed in claim 2, wherein silicon-containing material is quartz sand and kaolin.
5. method as claimed in claim 2, wherein silicon-containing material is quartzite, feldspar and diatomite.
6. method as claimed in claim 2, wherein silicon-containing material is quartz sand and diatomite.
7. method as claimed in claim 2, wherein silicon-containing material is quartzite and feldspar.
8. method as claimed in claim 2, wherein silicon-containing material is quartzite and diatomite.
9. method as claimed in claim 2, wherein silicon-containing material is quartz sand, diatomite and kaolin.
10. method as claimed in claim 2, wherein silicon-containing material is a quartzite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100066508A CN1325407C (en) | 2005-01-16 | 2005-01-16 | Synthesis of wollastonite fibre and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100066508A CN1325407C (en) | 2005-01-16 | 2005-01-16 | Synthesis of wollastonite fibre and method for preparing same |
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| Publication Number | Publication Date |
|---|---|
| CN1654386A CN1654386A (en) | 2005-08-17 |
| CN1325407C true CN1325407C (en) | 2007-07-11 |
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| CNB2005100066508A Expired - Fee Related CN1325407C (en) | 2005-01-16 | 2005-01-16 | Synthesis of wollastonite fibre and method for preparing same |
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| GB2083017A (en) * | 1980-09-01 | 1982-03-17 | Nippon Sheet Glass Co Ltd | Glass composition suitable for production of fibrous wollastonite method for producing said wollastonite and wollastonite obtained thereby |
| JPS5820714A (en) * | 1981-07-22 | 1983-02-07 | Nippon Sheet Glass Co Ltd | Preparation of fibrous wollatonite crystal |
| CN1301677A (en) * | 1999-12-29 | 2001-07-04 | 张梦里 | Artificial wollastonite and its preparation method |
| CN1413949A (en) * | 2001-10-25 | 2003-04-30 | 张梦显 | Fusing of natural tabular spar and its using method |
| CN1515739A (en) * | 2003-01-08 | 2004-07-28 | 云南省非金属矿产应用研究所 | Modified wollastonite mineral composite fiber for papermaking and papermaking method using same |
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| GB2083017A (en) * | 1980-09-01 | 1982-03-17 | Nippon Sheet Glass Co Ltd | Glass composition suitable for production of fibrous wollastonite method for producing said wollastonite and wollastonite obtained thereby |
| JPS5820714A (en) * | 1981-07-22 | 1983-02-07 | Nippon Sheet Glass Co Ltd | Preparation of fibrous wollatonite crystal |
| CN1301677A (en) * | 1999-12-29 | 2001-07-04 | 张梦里 | Artificial wollastonite and its preparation method |
| CN1413949A (en) * | 2001-10-25 | 2003-04-30 | 张梦显 | Fusing of natural tabular spar and its using method |
| CN1515739A (en) * | 2003-01-08 | 2004-07-28 | 云南省非金属矿产应用研究所 | Modified wollastonite mineral composite fiber for papermaking and papermaking method using same |
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| 硅灰石深加工及应用进展 陈德良，中国粉体技术，第8卷第2期 2002 * |
Also Published As
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|---|---|
| CN1654386A (en) | 2005-08-17 |
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