KR20150011074A - Method and apparatus for manufacturing basalt continuous fibers - Google Patents

Abstract

The present invention relates to a method and an apparatus for manufacturing basalt continuous fibers, which have uniform and excellent quality and can reduce manufacturing costs by using basalt suitable for manufacturing continuous fibers. According to an embodiment of the present invention, the method for manufacturing basalt continuous fibers comprises: a raw material supply step of pulverizing basalt to basalt powder of less than or equal to 3 μm and supplying the same; a foreign substance removal step of heating foreign substances included in the basalt powder to be removed by oxidizing or precipitating the foreign substances at 1,200-1,400°C; a fusion step of heating and melting the basalt powder in which the foreign substances are removed at 1,350-1,600°C; a stabilization step of regulating and maintaining viscosity of a fusion liquid of basalt at 1,350-1,450°C to be stabilized; an imprint step of maintaining the stabilized fusion liquid of basalt at 960-1,150°C, imprinting and slowly cooling the same, and manufacturing initial fibers; and a finish step of spraying a surface treatment agent on the initial fibers, performing surface treatment, drying the same, and producing basalt continuous fibers.

Description

[0001] METHOD AND APPARATUS FOR MANUFACTURING BASALT CONTINUOUS FIBERS [0002]

The present invention relates to a method and an apparatus for producing continuous fibers using basalt, and more particularly, to a method and apparatus for producing continuous fibers using basalt, which is basically suitable for continuous fiber production, To a method and apparatus for manufacturing a fiber.

Basalt is a kind of granite, formed by discharge of volcanic lava into the surface of the earth. It is an inexpensive natural material that is buried in Jeju Island, Cheorwon, and Pohang Youngilman in Korea and occupies about 25% of the surface of the earth.

Basalt fiber is an environmentally friendly fiber made from basalt which has been weathered for more than tens of millions years and has undergone stabilization process. It is excellent in heat resistance, alkali resistance and mechanical properties.

Therefore, the basalt fiber is used in various fields such as plastic reinforcing fiber, concrete structure repairing reinforcing fiber, automobile soundproofing material, heat resistant fiber for fireproof material, reinforcing fiber of composite material.

In particular, it can be used as a material for lightening to improve energy efficiency, and is an environmentally friendly material using only natural rock.

These basalt fibers are generally divided into continuous fibers and short fibers (staple fibers), and continuous fibers are characterized by long lengths and horizontal arrangements, which are unrestricted. Short fibers are characterized by long, irregular and irregular arrangements .

Conventionally, an apparatus for producing continuous fibers using basalt is specifically known in "a basalt production apparatus (Patent Document 10-2003-0075660) ".

According to the method, the basalt continuous fiber is obtained by crushing basalt with a basalt rock having a thickness of 20 mm or less and supplying the same; Melting the basalt rock at 1,440 ° C to 1,480 ° C; Drawing the molten basalt stone while maintaining the molten basalt at 1,380 ° C to 1,480 ° C; Gradually cooling the continuous fibers to 960 ° C to 1,150 ° C; Applying a surface treatment agent to the surface of the continuous fiber; And drying and winding the surface treatment agent applied to the continuous fibers.

However, in order to melt the basalt, a gas burner was used, and it was difficult to control the heat energy inside the melting furnace. When the basalt powder was supplied, basalt powder scattered near the burner, So that it is difficult to inject the powder material.

In addition, depending on the position of the burner, there is a problem that the quality of the continuous fiber produced is uneven due to a temperature difference in the molten material in the melting furnace.

[Patent document 10] 2003-0075660 (September 29, 2003)

The present invention provides a method and an apparatus for producing basalt continuous fibers capable of improving the quality of fibers by using only basalt rocks from which impurities have been removed.

The present invention also provides a method and an apparatus for producing continuous basalt fiber using the electric furnace in place of the melting method using the conventional gas burner, which can easily control the melting process and stabilize the production efficiency and the melting furnace.

Also provided is a method and apparatus for producing basalt continuous fibers capable of homogenizing the quality of produced fibers.

The method of producing basalt continuous fiber according to one embodiment of the present invention includes: a raw material supplying step of pulverizing basalt rock into basalt powder having a diameter of 3 μm or less; An impurity removing step of heating the material to 1,200 to 1,400 ° C so that the impurities contained in the basalt powder can be removed by oxidation or precipitation; A melting step of heating the basalt powder from which the impurities have been removed to 1,350 to 1,600 캜 for melting; A stabilization step of maintaining the temperature of the basalt melt at 1,350 to 1,450 캜 so as to be stabilized by controlling the viscosity of the basalt melt; A drawing step of drawing the stabilized basalt melt while maintaining the melt at 960 to 1,150 DEG C, and slowly cooling the same to produce an initial fiber; And a finishing step of spraying a surface treatment agent on the initial fiber, surface treatment, and drying to produce basalt continuous fibers.

The basalt rock is composed of 47 to 56 wt% of SiO2, 14 to 19 wt% of Al2O3, 7.0 to 15 wt% of FeO + Fe2O3, 8 to 11 wt% of CaO, 3.5 to 10.0 wt% of MgO, 2.5 to 6.0 wt% of K2O + Na2O, 0.2 to 2.0% by weight of TiO2, and the balance of other residues.

The raw material supply step may include a raw material standardization process for analyzing the components of the basalt powder, adding a natural organic material and an inorganic material to make the composition and size of the raw material uniform; And a preheating step of preheating the basalt powder.

The finishing step is characterized in that the surface treatment agent is sprayed to perform surface treatment while cooling the initial fiber.

The surface treatment agent is sprayed at 580 to 820 ° C and sprayed with 0.1 to 3.0% by weight of the initial fiber.

An apparatus for producing continuous basalt continuous fiber according to one embodiment of the present invention includes: a crusher for crushing basalt; A raw material storage for storing and pulverizing the ground basalt powder pulverized by the pulverizer; An electric furnace for receiving and melting the basalt powder in the raw material storage section; An inner space formed in the discharge hole formed in the bottom of the electric furnace to receive the melted basalt supplied through the discharge hole and formed of a plurality of nozzles for discharging the molten basalt to form basalt fiber, Forming portion; And a winder for winding up the basalt fiber produced in the fiber forming part.

The electric furnace is supplied with the basalt powder, removes impurities, firstly melts the basalt powder, and secondarily melts the first molten basalt powder supplied from the first chamber to melt second molten basalt rock, And a third chamber for supplying the molten basalt to the fiber forming unit in the second chamber, wherein the third chamber is installed to be separated from the ceiling and the floor so that the molten basalt can be moved overflow And a pair of barrier ribs.

The raw material storage unit further includes preheating means for preheating the basalt powder.

Preferably, the apparatus for producing continuous basalt fiber according to the embodiment of the present invention further comprises cooling means for slowly cooling the basalt fiber produced in the fiber forming portion, and spraying the surface treating agent onto the basalt fiber produced in the fiber forming portion At least one surface treatment means; And drying means for drying the surface treatment agent applied to the basalt fiber.

According to one embodiment of the present invention, it is possible to produce a basalt continuous fiber excellent in heat resistance, alkali resistance, mechanical properties, and the like.

Further, it is possible to homogenize the quality of the produced basalt continuous fiber and to improve the quality by melting the basalt using an electric furnace in which the basalt is melted using the conventional burner.

In addition, since impurities are removed to produce basalt continuous fibers, the quality of the produced basalt continuous fibers can be improved.

In addition, when basalt melt is melted in three stages, the basalt melt is optimized by optimizing the viscosity of the basalt melt, thereby preventing defects such as breakage of continuous basalt continuous fibers during production, and improving productivity have.

1 is a block diagram schematically showing a basalt continuous fiber manufacturing process according to an embodiment of the present invention,
FIG. 2 is a schematic structural view of an apparatus for producing continuous basalt continuous fiber according to an embodiment of the present invention,
3 is a detailed view of the portion "A" of Fig. 2,
4 is a view for explaining a fiber forming portion according to an embodiment of the present invention,
5 is a schematic view showing a state where a plurality of fiber forming units are provided in an electric furnace according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under these rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

1 is a block diagram schematically illustrating a basalt continuous fiber manufacturing process according to an embodiment of the present invention.

1, a basalt continuous fiber manufacturing method according to an embodiment of the present invention includes a raw material supplying step of pulverizing and supplying a basalt ore S to a basalt powder P, A step of melting the basalt powder (P) to produce a basalt melt (M), a step of drawing the basalt melt (M) to produce an initial fiber, and a step And a finishing step of spraying a surface treatment agent on the surface of the initial fiber and drying the same to produce basalt continuous fibers.

The composition of the basalt rock used in the present invention is 47 to 56 wt% of SiO2, 14 to 19 wt% of Al2O3, 7.0 to 15 wt% of FeO + Fe2O3, 8 to 11 wt% of CaO, 3.5 to 10.0 wt% of MgO, K2O + Na2O 2.5 To 6.0 wt%, TiO2 0.2 to 2.0 wt%, and other balance. However, the composition of the basalt rock used in the production of the basalt continuous fiber may be adjusted so that the upper limit and / or the lower limit value of the optional composition have a wider range than that of the basalt used in the production of the basalt continuous fiber.

If the chemical composition of the basalt rock used in the production of the basalt continuous fiber is not constant, the composition of the basalt melt may not be constant and the viscosity may be changed to break the fibers or the quality of the produced basalt continuous fibers may not be homogenized It is important to keep the chemical composition of the basalt constant.

Accordingly, the impurity removing step may be performed by heating the slurry to 1,200 to 1,400 ° C to remove the impurities contained in the basalt powder, thereby oxidizing or precipitating the impurities to prevent the composition of the basalt melt from being changed.

In addition, the conditions for the basalt to be suitable for producing the basalt continuous fiber are that the homogeneous melt can be formed when the basalt is melted, the temperature range in which the viscosity capable of producing the fiber can be maintained is sufficiently large, When these requirements are satisfied, an excellent product having homogeneous physical properties can be produced in large quantities.

Particularly, since rocks such as basalt rock have a tendency of temperature dependency such as crystallization and viscosity, in order to produce continuous fibers using basalt, the temperature range capable of maintaining the viscosity capable of producing continuous fibers is 70 ° C or higher, and it is difficult to continuously produce fibers in a temperature range of 70 ° C or lower, and even if production is feasible, the manufacturing conditions are complicated, resulting in a remarkable decrease in productivity and a low economic efficiency.

In the above, SiO ₂ is a component related to the viscosity, melting temperature, chemical resistance, fiber production temperature range, recrystallization tendency and the like of the melt, and when the component is less than 47% by weight, the viscosity capable of producing fibers, And the temperature is maintained at 70 ° C or less, which is problematic in terms of productivity and economy. When the content is higher than 56% by weight, the melting temperature is high, fuel consumption is high and viscosity is high, have.

Al ₂ O ₃ is a component related to viscosity, crystallization temperature, heat resistance and the like. When the content of the component is less than 14% by weight, crystal formation is slowed down and strength is lowered. The crystallization temperature is increased and the melting temperature must be increased.

FeO + Fe ₂ O ₃ is a component related to viscosity, melting temperature, crystallization tendency and the like. When this component is less than 7.0% by weight, viscosity is low and fiber production is difficult. When the content is more than 15% by weight, The reaction rate with platinum is rapidly increased to shorten the lifetime of the expensive bushing and to block the nozzle of the bushing easily, which makes it difficult to produce fibers having a uniform diameter.

CaO is a component related to strength, heat resistance, and chemical resistance. When the content is less than 8% by weight, the chemical resistance is deteriorated. When the content is more than 11% by weight, the strength and heat resistance are deteriorated.

MgO is a component related to swelling, heat resistance, chemical resistance and the like. When the content is less than 3.5% by weight, the chemical resistance and heat resistance are deteriorated. When the content is more than 10.0% by weight, the hot expandability becomes large, There is a problem that the surface cracks are generated in a large amount and the strength is lowered.

K ₂ O + Na ₂ O is a component related to the melting temperature, alkali resistance, acid resistance and the like. When the content is less than 2.5% by weight, the alkali resistance is lowered. When the content is more than 6.0% by weight, .

In addition, TiO ₂ , P ₂ O ₅ , Cr ₂ O ₃ , MnO and SO ₃ , which are trace components, are contained in excessive amounts as components related to strength, melting temperature, surface properties, and crystallization rate, It is difficult to obtain homogeneous physical properties due to local crystallization, and it is difficult to homogenize the melt, which makes it difficult to manufacture due to a difficult manufacturing condition.

The basalt rock P is crushed to produce the basalt powder P and the components of the basalt powder P are analyzed so that the basalt fiber is most easily formed, And a preheating step of preheating the basalt powder (P) by standardizing the material to make the composition of the material uniform by mixing the natural organic material and the inorganic material to make the material have the above composition, and making the material into a basalt grain size suitable for the input.

The above-mentioned inorganic material normalizes the basalt powder P by analyzing the components of the basalt powder P to make the composition uniform and the natural organic material to make the size of the basalt powder P constant.

At this time, the organic solvent in the basalt powder (P), that is, the natural organic material, is burned and removed in the preheating process.

In addition, the basalt grains preferably have a size of 7 to 15 mm. This is because, when the size of the basalt grains is less than 7 mm, quenching phenomenon occurs, and when the size of the basalt grains is more than 15 mm, temperature disturbance is generated to hinder the stabilization of the melting furnace.

It is preferable that the natural organic material does not chemically react with the basalt powder. This is because the quality of the produced basalt continuous fibers should not be deteriorated by changing the composition of the basalt melt (M).

Also, it is preferable that the basalt powder P is pulverized to a diameter of 3 탆 or less and preheated. This is because when the basalt powder exceeding 3 탆 is exposed to high temperature, the air inside the basalt can be rapidly expanded and exploded.

The impurity removing step may include the step of putting the basalt powder P into the first chamber 310 of the electric furnace 300 divided into the first chamber 310, the second chamber 320 and the third chamber 330 And heated to 1,200 to 1,400 ° C. to oxidize the impurities E introduced together with the basalt powder P and to melt the basalt powder P first. At this time, if the temperature is set too low, the basalt powder (P) is not dissolved properly, and if it is set too high, energy consumption is excessive, which is not preferable.

In the melting step, the basalt powder P is first melted in the first chamber 310 and overflowed to the second chamber 320, and reheated to 1,350 to 1,600 ° C to be completely melted in the second chambers Thereby producing the basalt melt (M).

The stabilization step stabilizes the basalt melt (M) overflowed in the second chamber (320) while maintaining the viscosity and the composition of the basalt melt (M) uniform to 1,350 to 1,450 ° C. When the basalt melt (M) is withdrawn in a state in which the viscosity and composition of the basalt melt (M) are not adjusted, the composition and viscosity of the drawn fibers in the longitudinal direction are not uniform.

The drawing step draws out the basalt melt (M) and cools it to produce initial fibers. At this time, it is preferable to withdraw while keeping the temperature at 960 to 1,150 占 폚, thereby suppressing a sudden change in temperature upon cooling. This is because when the temperature of the initial fiber is rapidly changed, cracks are generated on the surface of the initial fiber and the productivity is deteriorated.

The finishing step applies the surface treatment agent to the surface of the drawn fiber. The surface treatment agent is selected according to the use of the fiber, and has an effect of improving the lubricity of the fiber surface, decreasing the frictional force, protecting the surface, increasing the tensile strength, surface adhesion and the like.

The surface treatment agent may be an organic surface treatment agent or an inorganic surface treatment agent, and the surface treatment agent may be sprayed onto the initial fiber by spraying method. Thus, it has an effect of cooling the initial fiber simultaneously with the surface treatment of the initial fiber.

At this time, the surface treatment agent is preferably treated at 0.1 to 3.0 wt% with respect to the initial fiber at 580 to 820 ° C. If the content of the surface treatment agent is less than 0.1% by weight, the effect of surface treatment can not be expected. If it exceeds 3% by weight, it takes a long time for drying and curing to lower the productivity, Because.

When the surface treatment agent is completely dried, the basalt continuous fibers are wound and the basalt continuous fiber production process is terminated.

FIG. 2 is a schematic structural view of a basalt continuous fiber production apparatus according to an embodiment of the present invention, and FIG. 3 is a detailed view of the "A" FIG. 5 is a schematic diagram showing a state where a plurality of fiber forming units are provided in an electric furnace according to an embodiment of the present invention. FIG.

2 to 5, an apparatus for producing continuous basalt continuous fiber according to an embodiment of the present invention includes a crusher 100 for crushing the basalt ore S to produce the basalt powder P, A raw material storage part 200 for storing the basalt powder P pulverized in the raw material storage part 100 and discharging the stored basalt powder P in a fixed amount to the electric furnace 300 and a raw material storage part 200 for storing the basalt powder P, (300) which melts and produces the basalt melt (M) and a discharge hole (370) spaced upward from the bottom surface of the electric furnace (300) A fiber forming part 400 for producing the initial fiber with the basalt melt M and a take-up winder 800 for winding up the initial fiber produced in the fiber forming part 400.

The crusher 100 crushes the basalt ore S to 3 μm or less and supplies the crushed basalt powder P to the raw material storage 200. At this time, And a preheating means (not shown) for preheating the basalt powder P. This is because it is possible to prevent the basalt powder P from exploding due to a rapid temperature change when the basalt powder P is supplied into the electric furnace 300 maintained at a high temperature.

The electric furnace 300 receives and melts the basalt powder P. At this time, the electric furnace 300 is installed in the first chamber 310, the second chamber 320, and the third chamber 320 sequentially along the moving direction of the basalt powder P or the basalt melt M, And a pair of partitions 340 are installed to face the inner ceiling and the floor of the electric furnace 300 so as to partition the inside of the electric furnace 300.

The first chamber 310, the second chamber 320, and the third chamber 330 may be controlled at different temperatures. The impurities E may be deposited on the bottom surface of each chamber, (M) overflows the partition wall (340) and the impurities (E) of the third chamber are minimized.

At this time, at least one electric heating element 350 is installed in each chamber of the electric furnace 300. Accordingly, the temperature can be adjusted for each chamber, the temperature of the basalt melt M is sequentially increased, and the viscosity of the basalt melt M is controlled to be supplied to the fiber forming part 400 to improve the quality of the initial fiber It is effective.

Also, it is preferable that the electric furnace 300 is provided with a check hole 360 passing through each chamber. Thus, there is an effect that it is easy to determine whether there is an abnormality in each chamber.

3 to 4, the fiber forming part 400 according to an embodiment of the present invention is provided at a predetermined position of the melt moving path 380 of the electric furnace 300, So as to be approximately at the same height as the bottom of the melt transport passage 380.

The fiber forming part 400 is formed in a box shape having an inner space 420 in which the edge portion and the upper and lower ends are blocked by a plate material and the basalt melt M is received therein, It is separated up and down by a horizontal screen plate. A plurality of melt holes are formed on the screen plate. At least one nozzle 410 having a diameter of 2 to 3 mm (more preferably, 1.7 to 2.3 mm) is installed at a lower portion of the fiber forming portion 400.

At this time, the fiber forming part 400 is made of a platinum-rhodium alloy which is chemically stable at high temperatures while preventing all portions of the fiber forming part 400 contacting with the basalt melt M from being bonded with iron oxide and being corroded. Therefore, in order to minimize the use of the expensive platinum-rhodium alloy, it is desirable to minimize the volume of the fiber forming portion 400 and to form the layer to a thickness of about 0.7 mm to 1.7 mm.

In addition, a cooling and heating means may be further provided around the fiber forming portion 400 to maintain the fiber forming portion 400 at a proper temperature and viscosity.

5, a plurality of melt moving passages 380 are formed on one side of the electric furnace 300, and the fiber forming portions 400 are installed in correspondence with the respective melt moving passages 380, A plurality of the melt moving passages 380 are formed on opposite sides of the electric furnace 300 so that the fiber forming portions 400 correspond to the respective melt moving passages 380, .

Thus, productivity can be improved by producing the initial fibers at a plurality of the fiber forming portions at the same time.

The electric furnace 300 further includes a raw material supply pipe 370 for temporarily preheating the basalt powder P supplied from the raw material storage unit 100 and extending into the raw material supply pipe, And a raw material supply means 380 for gradually supplying the basalt powder P deposited in the raw material supply pipe 370 to the first chamber 310.

At this time, it is preferable that the raw material supply pipe 370 is formed adjacent to the water surface of the basalt melt M, and the raw material supply means 380 may be, for example, a hydraulic cylinder. The basalt powder P may be pre-heated to reduce the temperature difference between the basalt powder P and the basalt melt M, thereby reducing the trouble due to the temperature difference. By using the raw material supply means 380, The supply amount of the basalt powder P may be adjusted according to the production rate of the basalt powder P.

The basalt continuous fiber production apparatus according to an embodiment of the present invention further includes a cooling unit 500 installed below the fiber forming unit 400 for slowly cooling the initial fiber drawn from the fiber forming unit 400 .

The cooling means 500 slowly softens the initial fiber so that the initial fiber dropped from the fiber forming portion 400 can be dropped at a predetermined temperature and an optimum viscosity, The productivity can be improved.

In addition, the basalt continuous fiber production apparatus according to an embodiment of the present invention includes surface treatment means 600 for spraying the surface treatment agent onto the surface of the initial fiber that is first cooled in the cooling means 500, And drying means (700) for drying the applied surface treatment agent.

Preferably, the surface treatment means 600 adjusts the surface treatment agent to 580 to 820 ° C and injects the surface treatment agent onto the initial fibers. This has the effect of applying the surface treatment agent to the surface of the initial fiber and cooling the initial fiber.

The surface treatment means 600 includes a first surface treatment means 610 for spraying the surface treatment agent onto the surface of the initial fiber, And a second surface treatment means 620 for subjecting the fiber and the surface treatment agent to a second surface treatment in direct contact with each other.

Thus, there is an effect of improving the productivity by improving the quality of the initial fiber while cooling the initial fiber.

The drying means (700) completely dries the surface treatment agent applied to the surface of the initial fiber and supplies the surface treatment agent to the winder (800).

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

S: Basalt Ore P: Basalt Powder
M: Basalt melt E: Impurities
100: crusher 200: raw material storage part
300: Electric furnace 310: First chamber
320: second chamber 330: third chamber
340: partition wall 350: electric heating element
360: Check hole 370: Exhaust hole
400: fiber forming part 410: nozzle
420: internal space 500: cooling means
600: Surface treatment means 610: First surface treatment means
620: second surface treatment means 700: drying means
800: Winder

Claims (10)

A raw material supplying step of pulverizing basalt rock into basalt rock having a particle size of 3 탆 or less;
An impurity removing step of heating the material to 1,200 to 1,400 ° C so that the impurities contained in the basalt powder can be removed by oxidation or precipitation;
A melting step of heating the basalt powder from which the impurities have been removed to 1,350 to 1,600 캜 for melting;
A stabilization step of maintaining the temperature of the basalt melt at 1,350 to 1,450 캜 so as to be stabilized by controlling the viscosity of the basalt melt;
A drawing step of drawing the stabilized basalt melt while maintaining the melt at 960 to 1,150 DEG C, and slowly cooling the same to produce an initial fiber; And
A finishing step of spraying a surface treating agent on the initial fibers, surface treatment, and drying to produce basalt continuous fibers.
The method according to claim 1,
The basalt rock is composed of 47 to 56 wt% of SiO2, 14 to 19 wt% of Al2O3, 7.0 to 15 wt% of FeO + Fe2O3, 8 to 11 wt% of CaO, 3.5 to 10.0 wt% of MgO, 2.5 to 6.0 wt% of K2O + Na2O, 0.2 to 2.0% by weight of TiO2, and the balance of other residues. The method according to claim 1,
The raw material supply step may include:
A raw material standardization process for analyzing the components of the basalt powder, adding natural organic materials and minerals, and making the composition and size of the raw materials uniform; And
Further comprising a preheating step of preheating the basalt powder.
The method according to claim 1,
Wherein the finishing step comprises:
Characterized in that the surface treatment agent is sprayed and the initial fiber is subjected to a surface treatment while being cooled.
The method of claim 4,
Wherein the surface treatment agent is sprayed at 580 to 820 占 폚 and sprayed with 0.1 to 3.0% by weight of the initial fiber.
A crusher for crushing basalt;
A raw material storage for storing and pulverizing the ground basalt powder pulverized by the pulverizer;
An electric furnace for receiving and melting the basalt powder in the raw material storage section;
An inner space formed in the discharge hole formed in the bottom of the electric furnace to receive the melted basalt supplied through the discharge hole and formed of a plurality of nozzles for discharging the molten basalt to form basalt fiber, Forming portion; And
And a winder for winding up the basalt fiber produced in the fiber forming portion.
The method of claim 6,
The electric furnace is supplied with the basalt powder, removes impurities, firstly melts the basalt powder, and first melts the basalt powder supplied from the first chamber to secondarily melt the melted basalt rock, And a third chamber for supplying the molten basalt to the fiber forming unit in the second chamber, wherein the third chamber is installed to be separated from the ceiling and the floor so that the molten basalt can be moved overflow And a pair of barrier ribs. The method of claim 6,
The raw-
Further comprising preheating means for preheating the basalt powder.
The method of claim 6,
Further comprising cooling means for slowly cooling the basalt fiber produced in the fiber forming portion.
The method of claim 6,
At least one surface treatment means for spraying the surface treatment agent onto the basalt fiber produced in the fiber formation portion; And
And drying means for drying the surface treatment agent applied to the basalt fiber.

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