CN110590128A - Production method of basalt continuous fibers - Google Patents
Production method of basalt continuous fibers Download PDFInfo
- Publication number
- CN110590128A CN110590128A CN201910945505.8A CN201910945505A CN110590128A CN 110590128 A CN110590128 A CN 110590128A CN 201910945505 A CN201910945505 A CN 201910945505A CN 110590128 A CN110590128 A CN 110590128A
- Authority
- CN
- China
- Prior art keywords
- basalt
- melt
- inert gas
- production method
- continuous filament
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/193—Stirring devices; Homogenisation using gas, e.g. bubblers
-
- 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
Abstract
The application discloses a production method of basalt continuous fibers, which comprises the following steps: adding basalt raw materials from a feed inlet of a kiln; heating by heat source radiation, and melting the basalt raw material into basalt melt; and introducing inert gas into the basalt melt from the lower part of the feeding hole to stir the basalt melt. One technical effect of the invention is to ensure that the melt is fully stirred.
Description
Technical Field
The application belongs to the technical field of industrial production, and particularly relates to a production method of basalt continuous fibers.
Background
The continuous basalt fiber (CBF for short) is a high-technology fiber which is purely natural and is not synthesized artificially. The CBF is a continuous fiber which is prepared by melting pure natural volcanic rock (basalt) serving as a raw material at 1450-1500 ℃, and drawing the molten basalt through a platinum-rhodium alloy wire drawing bushing at a high speed, the pure natural CBF is golden in color, and the CBF serving as a reinforcement can be prepared into various composite materials. The current typical basalt fiber production process comprises the following steps: firstly, selecting proper basalt ore raw materials, crushing, storing the cleaned basalt raw materials in a bin for later use, feeding the basalt raw materials into a unit melting furnace through a feeder, melting the basalt raw materials at a high temperature of about 1500 ℃, enabling the molten basalt melt to flow into a drawing forehearth, and generally properly increasing the melting temperature in the drawing forehearth and simultaneously ensuring the long retention time of the melt in the forehearth in order to ensure the sufficient melting of the basalt melt, the sufficient homogenization of chemical components and the sufficient volatilization of bubbles in the melt. Drawing qualified basalt melt from a forming area into fibers through a platinum-rhodium alloy bushing, applying a proper impregnating compound to the drawn basalt fibers, then passing the basalt fibers through a buncher and a fiber tensioner, and finally reaching an automatic filament winder. At present, three types of smelting furnaces for producing basalt fibers are mainly used, one type is an all-gas melting furnace body heated by burning of a natural gas nozzle, the other type is an all-gas melting furnace body, and the other type is a furnace body structure combining gas and electricity. The three melting modes are that a heating source is arranged at the top of the furnace body, and energy is transferred to the basalt raw material in a heat radiation mode. The three furnace bodies finish the processes of melting raw materials, homogenizing melt and clarifying the melt by heat radiation. At present, the mode of the basalt fiber production process also has certain limitations, in particular to the melting process thereof. Compared with the common glass fiber tank furnace melting process, the conventional basalt melting process has the main defects of low melting efficiency and insufficient melting and homogenization.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a production method of basalt continuous fibers.
The invention provides a production method of basalt continuous fibers, which comprises the following steps:
adding basalt raw materials from a feed inlet of a kiln;
heating by heat source radiation, and melting the basalt raw material into basalt melt;
and introducing inert gas into the basalt melt from the lower part of the feeding hole to stir the basalt melt.
Alternatively, the drop point of the basalt raw material fed from the feed port of the kiln is located within the stirring range of the inert gas.
Optionally, the method further comprises the following steps:
and before the inert gas enters the basalt melt, heating the basalt melt.
Optionally, the inert gas is heated to 400-800 ℃ before being subjected to the basalt melt
Optionally, the method further comprises the following steps:
and collecting waste heat radiated by a heat source in the kiln, and heating the inert gas before the inert gas enters the basalt melt.
Optionally, the method further comprises the following steps:
and before the inert gas enters the basalt melt, pressurizing the basalt melt.
Optionally, the inert gas is pressurized to 0.3MPa-0.8MPa before being subjected to the basalt melt
Optionally, the inert gas is added 45 ° down.
Optionally, the height of the inert gas addition position is located at one half of the height of the basalt melt level.
Optionally, the inert gas comprises one of helium, neon, argon, krypton and xenon.
One technical effect of the invention is to ensure that the melt is fully stirred. Under the drive of inert gas, the unmelted raw materials and the melt can be fully stirred. Thereby accelerating the melting of the raw materials and simultaneously playing a good role in homogenizing the melted melt.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is an embodiment of the present application;
FIG. 2 is an embodiment of the present application;
in the figure: 1, a furnace body; 11 a feed wall; 2, a feeding hole; 3, air bricks; 4, a waste heat collector; 5 air intake assembly, 51 air intake pipe, 52 heater; 53 a booster pump; 6 electrodes; 7, gas motion track; 8 melt level; 9 basalt fiber.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
The invention provides a production method of basalt continuous fibers, which comprises the following steps:
adding basalt raw materials from a feed inlet of a kiln;
heating by heat source radiation, and melting the basalt raw material into basalt melt;
introducing inert gas into the basalt melt from the lower part of the feeding hole to stir the basalt melt;
under the drive of inert gas, the unmelted raw materials and the melt can be fully stirred. Thereby accelerating the melting of the raw materials and simultaneously playing a good role in homogenizing the melted melt. Improves the melting efficiency and leads the melting and the homogenization to be more sufficient.
Optionally, the drop point of the basalt raw material fed from the feed port of the kiln is located within the stirring range of the inert gas, so that the basalt raw material fed is sufficiently homogenized in the basalt melt to prevent accumulation.
Optionally, the method further comprises the following steps: and before the inert gas enters the basalt melt, heating the basalt melt. The normal of basalt melt is ensured, and the phenomenon that the local temperature is too low to cause condensation in a short time, influence the temperature in the furnace and cause the fluctuation of product quality is prevented.
Optionally, the inert gas is heated to 400 ℃ to 800 ℃ before being subjected to the basalt melt. The heating temperature is equivalent to the temperature of the basalt melt.
Optionally, the method further comprises the following steps: the waste heat radiated by the heat source in the kiln is collected and used for heating the inert gas before entering the basalt melt, so that the waste of energy is reduced, and the utilization rate is improved.
Optionally, the method further comprises the following steps: before the inert gas enters the basalt melt, the inert gas is pressurized to ensure the stirring capacity after the inert gas enters, so that the basalt melt can be fully stirred.
Optionally, the inert gas is pressurized to 0.3Mpa to 0.8Mpa prior to subjecting the basalt melt to the inert gas. So that the basalt melt can be sufficiently stirred.
Optionally, the inert gas is added 45 ° down. The high-temperature and high-pressure inert gas can form a vortex-shaped stirring effect, so that the basalt melt in the furnace body and the raw materials entering the melt are fully stirred, and the homogenization effect is achieved.
Optionally, the height of the inert gas addition position is located at one half of the height of the basalt melt level. So that the high-temperature and high-pressure inert gas can fully stir the basalt melt in the furnace body 1 and the raw materials entering the melt, thereby playing a role in homogenization.
Optionally, the inert gas comprises one of helium, neon, argon, krypton and xenon.
The invention does not change the three existing heating modes, a row of inert gas inlets preheated by a heat exchanger are designed on the side wall of the furnace body, the heated inert gas is continuously introduced into the furnace body, the gas is blown into the melt at a certain angle, and further the gas stirring of the melt is formed. Thereby achieving the purposes of improving the production efficiency and reducing the unit energy consumption.
The present invention also provides a basalt continuous filament production furnace with a forced agitation system, in some embodiments, referring to fig. 1 and 2, comprising a furnace body 1 and an air intake assembly 5.
The furnace body 1 is provided with an inner cavity for containing basalt melt. The lateral wall of one side of furnace body 1 is feed wall 11, be provided with feed inlet 2 on feed wall 11. The basalt raw material is added into the furnace body 1 from the feed inlet 2 and is heated and melted into basalt melt, and the melted basalt melt can form a basalt melt liquid level 8 in the furnace body 1. The basalt fiber 9 is produced from the basalt melt by a process, which is the prior art and is not described herein again. And the gas permeable brick 3 is arranged on the feeding wall 11, and the gas permeable brick 3 is arranged below the feeding hole 2 and submerged below the liquid level 8 of the basalt melt.
The intake assembly 5 includes an intake pipe 51, and a heater 52 and a booster pump 53 sequentially disposed along a gas flow direction of the intake pipe 51. The heater 52 is used for heating the gas in the inlet pipe 51. The booster pump 53 is used to pressurize gas. The tail end of the air inlet pipe 51 is connected to the feeding wall 11, and the tail end of the air inlet pipe 51 is communicated with the inner cavity of the furnace body 1 through the air brick 3, so that the heated and pressurized air can enter the furnace body 1 through the air brick 3 to stir the basalt melt. The gas in the gas inlet pipe 51 is inert gas.
The inert gas is heated to high temperature by the heater 52, and is pressurized by the booster pump 53, enters the furnace body 1 through the air brick 3 in a high-pressure and high-temperature mode, and is fully cut into the melt, so that the melt is fully stirred. Under the drive of inert gas, the unmelted raw materials and the melt can be fully stirred. Thereby accelerating the melting of the raw materials and simultaneously playing a good role in homogenizing the melted melt.
Optionally, referring to fig. 1, a waste heat collector 4 is further disposed on the furnace body 1, and the waste heat collector 4 is connected to the heater 52. The heater 52 may be a heat exchanger in the form of a plate heat exchanger or the like. The waste heat collector 4 is used for transferring heat in the furnace body 1 to the heater 52, so that energy is recycled, and energy consumption is reduced.
Alternatively, referring to fig. 1, the waste heat collector 4 comprises an air duct connected to the heater 52. The air pipe can be provided with a one-way valve to prevent backflow.
Optionally, referring to fig. 1 and 2, a standard liquid level height of the molten metal is arranged in the furnace body 1, and the height of the air brick 3 is set at a half of the standard liquid level height. So that the high-temperature and high-pressure inert gas can fully stir the basalt melt in the furnace body 1 and the raw materials entering the melt, thereby playing a role in homogenization.
Optionally, referring to fig. 1, the air outlet direction of the air brick 3 forms an included angle of 45 ° with the horizontal direction. Further, the air outlet direction of the air brick 3 is downward relative to the horizontal direction. Therefore, high-temperature and high-pressure gas can be ensured to be fully cut into the melt, and the melt is further ensured to be fully stirred.
Optionally, a refractory material cushion layer is arranged on the inner wall of the furnace body 1, and the material of the air brick 3 is the same as that of the refractory material cushion layer. The air brick has the same performance as the refractory material, so that the heat preservation effect of the furnace body is not greatly influenced.
Alternatively, referring to fig. 1, the furnace body 1 has a discharge port provided at an end of the furnace body 1 opposite to the feed wall 11, and the produced basalt fibers 9 are discharged from the discharge port.
Optionally, the inert gas comprises one of helium, neon, argon, krypton and xenon.
In the invention, a row of air bricks are arranged right below the wall of a charging side furnace of a smelting furnace, and the positions of the air bricks are positioned at one half of the liquid level of a melt in the furnace. High-pressure high-temperature inert gas is blown into the melt in the furnace through the air brick, and the method has the following effects on the whole melting process: the high-temperature high-pressure gas is introduced to fully stir the unmelted basalt raw material entering the melt from the feeding hole, so that the added basalt raw material is prevented from sinking into the furnace bottom to generate accumulation after being too late to be melted. Meanwhile, the impact effect of unmelted raw materials on the bottom of the furnace body is avoided, the erosion effect of basalt raw materials on the furnace bottom is reduced, and the refractory materials at the bottom of the furnace body are well protected. The high-temperature high-pressure gas cuts into the melt in the direction of the furnace bottom at a certain angle, so that shearing force can be generated on the melt, the melt is fully stirred, the melt is driven by the gas to generate transverse and longitudinal movement of the melt, the unmelted raw materials are stirred, the unmelted raw materials are continuously contacted with new high-temperature melt, and the melting state is kept. In the case of a molten melt, the internal temperature field is well homogenized by the transverse and longitudinal movements. The gas that lets in the furnace body is inert gas, and to gas furnace, the gas field in the improvement stove that can be better can guarantee that the furnace body is inside to be inert state, consequently can avoid oxidizing combustion atmosphere to the influence of fuse-element composition, and inert atmosphere can also delay the inside refractory material's of furnace body erosion rate simultaneously, prolongs the life of furnace body. For an all-electric melting furnace, the inert atmosphere can avoid the erosion of the electrode, the electrode is protected, and the service life of the electrode is prolonged.
As used in the specification and claims, certain terms are used to refer to particular components or methods. As one skilled in the art will appreciate, different regions may refer to a component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not in name. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A production method of basalt continuous fibers is characterized by comprising the following steps:
adding basalt raw materials from a feed inlet of a kiln;
heating by heat source radiation, and melting the basalt raw material into basalt melt;
and introducing inert gas into the basalt melt from the lower part of the feeding hole to stir the basalt melt.
2. The basalt continuous filament production method according to claim 1, wherein a drop point of the basalt raw material fed from the feed port of the kiln is located within an agitation range of the inert gas.
3. The basalt continuous filament production method according to claim 1, further comprising the steps of:
and before the inert gas enters the basalt melt, heating the basalt melt.
4. The basalt continuous filament production method according to claim 3, wherein the inert gas is heated to 400 ℃ -800 ℃ before being subjected to the basalt melt.
5. The basalt continuous filament production method of claim 3, further comprising the steps of:
and collecting waste heat radiated by a heat source in the kiln, and heating the inert gas before the inert gas enters the basalt melt.
6. The basalt continuous filament production method according to claim 1, further comprising the steps of:
and before the inert gas enters the basalt melt, pressurizing the basalt melt.
7. The basalt continuous filament production method of claim 6, wherein the inert gas is pressurized to 0.3Mpa to 0.8Mpa before being subjected to the basalt melt.
8. The basalt continuous filament production method according to claim 1, wherein the inert gas is added in a downward 45 °.
9. The basalt continuous filament production method of claim 1, wherein the inert gas addition position is at a height that is one-half of the height of the basalt melt level.
10. The basalt continuous filament production method of claim 1, wherein the inert gas comprises one of helium, neon, argon, krypton and xenon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910945505.8A CN110590128A (en) | 2019-09-30 | 2019-09-30 | Production method of basalt continuous fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910945505.8A CN110590128A (en) | 2019-09-30 | 2019-09-30 | Production method of basalt continuous fibers |
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| CN110590128A true CN110590128A (en) | 2019-12-20 |
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| CN201910945505.8A Pending CN110590128A (en) | 2019-09-30 | 2019-09-30 | Production method of basalt continuous fibers |
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|---|---|---|---|---|
| US4617045A (en) * | 1985-04-05 | 1986-10-14 | Boris Bronshtein | Controlled process for making a chemically homogeneous melt for producing mineral wool insulation |
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| CN203033871U (en) * | 2013-01-06 | 2013-07-03 | 四川航天拓鑫玄武岩实业有限公司 | Multi-bushing kiln for producing basalt fibers |
| CN104418484A (en) * | 2013-09-06 | 2015-03-18 | 邢韫韬 | Fuel-gas double-preheating high-temperature oxygen-enriched hydrocarbon heat circulation nitrogen-free unidirectional radiation combustion system |
| CN104684853A (en) * | 2012-02-27 | 2015-06-03 | 考斯曼技术有限公司 | Glass fining method using physical bubbler |
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| CN108439767A (en) * | 2018-04-24 | 2018-08-24 | 清远忠信世纪玻纤有限公司 | A technique for it is melted for glass fibre |
| US20180273416A1 (en) * | 2015-08-26 | 2018-09-27 | Corning Incorporated | Glass melting system and method for increased homogeneity |
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2019
- 2019-09-30 CN CN201910945505.8A patent/CN110590128A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617045A (en) * | 1985-04-05 | 1986-10-14 | Boris Bronshtein | Controlled process for making a chemically homogeneous melt for producing mineral wool insulation |
| US20060101859A1 (en) * | 2002-11-29 | 2006-05-18 | Masataka Takagi | Glass melting gurnace and method for producing glass |
| US20070022780A1 (en) * | 2005-07-28 | 2007-02-01 | House Keith L | Method of increasing the effectiveness of a fining agent in a glass melt |
| CN102076618A (en) * | 2008-06-26 | 2011-05-25 | 康宁股份有限公司 | Method of bubbling a gas into a glass melt |
| CN104684853A (en) * | 2012-02-27 | 2015-06-03 | 考斯曼技术有限公司 | Glass fining method using physical bubbler |
| CN203033871U (en) * | 2013-01-06 | 2013-07-03 | 四川航天拓鑫玄武岩实业有限公司 | Multi-bushing kiln for producing basalt fibers |
| CN104418484A (en) * | 2013-09-06 | 2015-03-18 | 邢韫韬 | Fuel-gas double-preheating high-temperature oxygen-enriched hydrocarbon heat circulation nitrogen-free unidirectional radiation combustion system |
| US20180273416A1 (en) * | 2015-08-26 | 2018-09-27 | Corning Incorporated | Glass melting system and method for increased homogeneity |
| CN107651857A (en) * | 2017-09-08 | 2018-02-02 | 山西太钢不锈钢股份有限公司 | One kind makes silica sand and the bauxite rapidly-soluble technique in slag liquid |
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| CN108439767A (en) * | 2018-04-24 | 2018-08-24 | 清远忠信世纪玻纤有限公司 | A technique for it is melted for glass fibre |
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Application publication date: 20191220 |