KR20160035321A - Continuous melting furnace using magnetron and Black SiC powder - Google Patents

Abstract

The present invention relates to a continuous melting furnace using a magnetron and silicon carbide powder, more specifically, which comprises: a sealing type chamber having a cylindrical or polygonal shape; an insulation case fixedly installed for a hollow portion to be formed within the chamber; a plurality of magnetrons discharging a microwave to the hollow portion within the chamber; a plurality of induction heating type heating pipes; an insulation plate for upper and lower stoppers individually installed in an upper and a lower end portion of the insulation case; a magnetron drive unit; a hopper installed in an upper portion of the insulation case; a melting liquid outlet formed by integrally extending in a bottom portion of the insulation case; and a melting furnace support enabling a melting furnace to be fixedly installed to be inclined at a predetermined angle. Therefore, workability and safety can be secured without a leak of gas or the like generated when dissolving various minerals.

Description

[0001] The present invention relates to a continuous melting furnace using a magnetron and a silicon carbide powder,

The present invention relates to a continuous melting furnace using a magnetron and a silicon carbide powder. More specifically, the present invention relates to a continuous melting furnace using a magnetron and a silicon carbide powder, in which a plurality of magnetrons are arranged outside a chamber having a cylindrical or polygonal shape, The inner tube having a small diameter formed by stainless steel and passing through the central portion of the heat insulating case in the chamber and the outer tube formed with a ceramic fiber so as to have a relatively large diameter are doubly joined / Heated by a microwave (microwave) at a space portion formed between the outer surface of the inner tube and the inner surface of the outer tube formed by the ceramic fiber and filled with black SiC powder, A heating pipe is installed to be inclined in a predetermined angle range, The microwave irradiated from the magnetron is supplied to the upper portion of the heat case through a hopper which can continuously feed various kinds of materials to be melted and a melt outlet provided with a valve is provided in the bottom opening. (For example, various mineral powders, glass, or salt) passing through the induction heating type heating tube by continuously heating it to an ultra-high temperature in the shortest time through an indirect heating method in which the powder is applied to the induction- It is possible to ensure workability and safety, and it is possible to continuously dissolve, thereby remarkably improving the productivity and production efficiency, and it is possible to reduce the production cost and increase the energy saving effect because there is no heat loss Free at the dissolution rate through the control of the inclination angle of the chamber or the control of the driving number of the magnetrons The invention can be easily adjusted.

In general, a melting furnace is a furnace manufactured for melting and melting a solid material at a melting point or more. There are various types and types of furnaces, It can be divided into four types such as furnace, electric furnace and furnace furnace.

In this case, the reflow furnace is easy to adjust the furnace component used for the smelting of metal and the melting process for manufacturing alloy, and the fuel is used as coal, gas or oil, and does not come into direct contact with the heated product, heats the metal or ore with flame, The flat furnace is representative of this type.

A crucible furnace is a relatively simple furnace used for melting non-ferrous alloys, steel and glass. It is made of graphite or cast iron and divided into coke, gas and heavy oil according to the fuel used. And is heated and melted from the outside, so that the oxidation of the metal is small and the impregnation of the impurities due to the fuel and air blowing is reduced and a high-quality molten body can be obtained.

In addition, the electric furnace is a furnace which does not use fuel and is heated and melted by electrothermal. It does not need a combustion chamber and combustion air, there is no loss of heat due to exhaust gas, temperature control is easy, There are arcs using heat, arcs using high heat generated by arc, induction furnaces for inducing current in a vessel and heating.

In addition, a charcoal furnace is an upright furnace in which refractory clay is laid inside a cylinder made of steel plate and refractory clay is applied. It is also called a cupola. It is usually used for melting cast iron. There are two kinds of hot and cold type Since the heat efficiency is good, and it is economical and the dissolving time is fast, it is advantageous to make a large amount of waste continuously.

On the other hand, in recent years, various melting furnaces and dryers using an induction furnace, such as a magnetron, which induces a current in a container or a heating device among the above melting furnaces have been developed and widely used in various fields.

For example, in Korean Patent Laid-Open Publication No. 10-2014-0010559, "a device and a method for processing a salt using a microwave or carbon nano heater, and a salt prepared using the same" are proposed.

In one embodiment of the present invention, there is provided a salt processing apparatus using a microwave, comprising: a body case; A heating chamber mounted in the body case to apply heat thereto; A heating tube which is disposed transversely to the central portion in the heating chamber and is made of a metallic material; A heating element which surrounds the outer surface of the heating tube and conducts the heated heat; A heat insulating material which surrounds the heating body to prevent the heat transmitted through the microwave and being heated from flowing out to the outside; A plurality of magnetrons installed on upper and lower surfaces of the body case to guide microwaves to the heating tube inside the body case through a waveguide to radiate the microwaves; A salt injecting means installed above one side of the body case for injecting salt into the heating tube; And discharging means for discharging the salt discharged from the heating tube while surrounding the other side of the body case.

In another embodiment, the body case is rectangular or rectangular; A heating chamber forming an interior of the body case; An air inlet and a gas outlet respectively installed from the left and right sides of the body case to the heating chamber; A plurality of magnetrons installed on the body case to radiate microwaves toward the heating chamber through waveguides; A crucible provided on the bottom surface of the heating chamber and composed of a plurality of quadrangular SiC-based materials arranged in a plurality of openings so as to contain and process the salt; And a plurality of nano carbon heaters installed to emit far-infrared rays from the upper surface in the heating chamber toward the crucible.

In addition, a "dissolving device" is also disclosed in Japanese Patent Application Laid-Open No. 10-1227382, which is a melting furnace in which a molten material is charged and formed into a blast furnace; And a microwave application type heating unit provided in the melting furnace and provided to melt the molten material generated through the applied microwave to generate molten solder, A gas curtain forming means provided for the gas curtain; And gate means connected to a discharge port provided at a lower portion of the furnace to control discharge of the melted material; And at least a gate means.

However, most of the dissolution apparatuses have such a complicated structure that the melting furnace itself is fixed in the horizontal direction or the vertical direction, so that the inclination angle of the melting furnace can not be controlled depending on the object to be melted, In addition, since it is impossible to control the melting temperature and the production rate of the product, the yield is low, the production efficiency is lowered, the workability and safety can not be ensured, the heat cost is lost, And the like.

Particularly, most melting furnaces have been used for melting only a specific substance, and various types of mineral powders having a melting point of 1,300 DEG C or lower, general glass having a melting point of 600 to 700 DEG C or salts having a melting point of 800 to 900 DEG C It is impossible to dissolve them using a melting furnace (that is, the compatibility of melting furnaces is lacking).

Korean Patent Publication No. 10-2012-0052780 (May 24, 2012) Korean Patent Publication No. 10-2014-0010559 (Jan. 27, 2014) Korean Registered Patent No. 10-1227382 (Jan. 23, 2013)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a magnetron in which a plurality of magnetrons are provided outside a cylindrical or polygonal chamber having a hollow portion by a heat- A method of manufacturing a ceramic heat sink, comprising the steps of: joining / molding an inner tube and an outer tube having different diameters to penetrate the heat insulating case at a predetermined distance, A plurality of induction heating type heating pipes having a shape filled with silicon carbide powder and heated to a high temperature by a microwave (microwave (for example, 2,450 MHz / sec) generated from the magnetron) are installed, And a plurality of magnetrons and induction heating type heating tubes A chamber is provided on the melting furnace so as to be inclined within a predetermined angle range and a hopper capable of continuously injecting various objects to be melted such as glass or salt is installed in the upper inlet of the heat insulating case And a heater for preventing the coagulation of the molten metal from being installed at the bottom of the furnace, and the microwave irradiated from the magnetron is applied to the induction heating type heating pipes, Since various kinds of heated materials passing through the inside of the pipe can be continuously discharged as a solution, it is possible to ensure workability and safety because there is no outflow of gas generated in dissolving various objects to be heated, and continuous dissolution is possible Thereby greatly improving the productivity and the production efficiency. Further, It is possible to reduce the production cost of the product as well as to increase the effect of sensitivity and to control the melting speed and temperature by adjusting the inclination angle of the chamber or the driving number of the magnetron, And to provide a continuous melting furnace using a magnetron and silicon carbide powder which can be greatly improved.

It is another object of the present invention to provide a continuous melting furnace using a magnetron and silicon carbide powder which are harmless to the human body by preventing the outflow of electromagnetic waves or microwaves due to the operation of the melting furnace.

Another object of the present invention is to provide an induction heating type heating pipe which is made of stainless steel having excellent corrosion resistance and high resistance to refractory and heat resistance and is made of chlorine (Cl ₂ The present invention also provides a continuous melting furnace using a magnetron and silicon carbide powder that can greatly prevent the induction heating type heating tube from being damaged by a chemical reaction such as a chemical reaction and the like, and can significantly extend the lifetime of the induction heating type heating pipe itself.

It is a further object of the present invention to provide a heating tube for induction heating in which heat generated in a silicon carbide powder heated by a magnetron is formed by a ceramic fiber having a characteristic of passing microwaves and shutting off heat, And a continuous melting furnace using the magnetron and silicon carbide powder capable of significantly reducing the melting effect of the object to be heated using the heat generated from the black silicon carbide powder.

According to an aspect of the present invention, there is provided a method of manufacturing a magnetron, the method comprising: forming a cylindrical or polygonal shape having a predetermined diameter, length, and volume using a metal plate; forming a plurality of magnetron- The lower opening having a closed configuration; A plurality of supporting members having a cylindrical or polygonal shape corresponding to the shape of the chamber and partially protruding upward and downward and inserted at a predetermined interval in a state of being inserted into the chamber, A heat insulating case for allowing the microwaves emitted through the waveguide of the magnetrons to pass through the induction heating type heating pipe and minimizing the heat transferred from the induction heating type heating pipe to the chamber side; And an end of the waveguide is detachably attached to the magnetron mounting hole of the chamber. When a high voltage is applied from the high-voltage transformer of the magnetron driving unit, a high frequency is generated to generate microwaves of a predetermined band from the inner surface of the chamber and the hollow of the outer surface of the heat insulating case (For example, 2,450 MHz / sec) to induce heating of the black silicon carbide powder filled in the induction heating type heating pipes to a predetermined temperature; The space between the outer surface of the inner tube and the inner surface of the outer tube has a specific gravity of 3.12, a melting point of 2,600 to 2,800 ° C and a hardness of not higher than that of the diamond When the microwaves of a predetermined band are emitted from the magnetrons in a state in which the silicon powder is filled in the heat insulating case at a predetermined interval, the black silicon carbide powder is heated by induction heating within the predetermined temperature range, A plurality of induction heating type heating pipes for melting the object to be heated; Upper and lower heat insulating plates respectively installed at upper and lower ends of the heat insulating case to prevent the object and the melt from flowing into the space formed between the induction heating type heating tubes in the heat insulating case; A magnetron driving unit for applying a high voltage to the magnetrons when the power is supplied to allow the magnetrons to oscillate at a high frequency; A hopper which is provided at an upper portion of the heat insulating case and uniformly supplies the object to be heated into the inner pipe of the induction heating type heating pipes; A melt discharge port which is provided integrally with and extends from the bottom of the heat insulating case so as to have a manual or automatic valve and controls the discharge of the melted matter to be discharged through the respective induction heating type heating tubes; And a melting furnace which is fixedly installed on the ground and fixes the melting furnace to be inclined at a predetermined angle.

At this time, the inner tube of the induction heating type heating pipe is formed to have a relatively high melting point of 1,400 to 1,510 ° C., excellent corrosion resistance, and a relatively small diameter of the inner diameter of the outer tube using stainless steel having high fire resistance and heat resistance.

In addition, the outer appearance of the induction heating type heating tube is formed by using a ceramic fiber having a melting point as high as 1,700 to 1,815 DEG C, a microwave passing therethrough and a heat dissipation blocking function, and having a relatively larger diameter than the inner diameter of the inner tube .

In addition, a hinge shaft is provided at the contact portion between the melting furnace support and the outer surface of the chamber, and between the melting furnace support and one side of the chamber, the melting furnace operator passes through the induction heating type heating pipes and the number of operations of the magnetron It is preferable to further include an inclination angle adjusting means for adjusting the inclination angle of the melting furnace itself in order to adjust the passing speed of the object to be heated passing through the induction heating type heating pipes.

In this case, the inclination angle adjusting means may include a hydraulic cylinder disposed between one side of the melting column and one side of the chamber.

Further, the chamber may further include a chamber pressure check valve that automatically opens when the air in the hollow portion expands to a predetermined pressure or higher by heat to lower the pressure in the chamber, and prevents leakage of the microwave to the inlet of the chamber pressure check valve. A mesh net of 3 mm or less mesh is provided.

Further, the melt outlet port is further provided with a melt outlet port pressure check valve that automatically opens when the internal pressure expands to a predetermined pressure or more, thereby lowering the pressure in the melt outlet.

In addition, a temperature sensor for detecting the temperature of the melted material in real time and transmitting the detected temperature to the magnetron driving unit is further provided inside the melt discharge port, and a heater for preventing the coagulation of the molten liquid is further provided on the outer surface of the melt discharge port, When the temperature detected through the temperature sensor drops below a predetermined temperature, the molten liquid in the molten liquid discharge port is prevented from solidifying by operating the heater for preventing solidification of the molten liquid.

The heat insulating case, the support, and the heat insulating plate for the upper and lower caps are formed of an alumina fiber board having a high melting point of 1,000 to 1,800 ° C. and a density (kg / m 3) of 300 to 600 .

The input terminal of the magnetron driving unit is further provided with a heating temperature setting key of a silicon carbide heating pipe and a setting key of operating numbers of magnetrons.

As described above, according to the continuous melting furnace using the magnetron and the silicon carbide powder of the present invention, a plurality of magnetrons are provided outside the chamber of a cylindrical or polygonal shape having a hollow portion by a heat insulating case provided inside, A space formed between the outer surface of the inner tube formed of stainless steel and the inner surface of the outer tube formed by the ceramic fiber is formed by doubly joining / molding the inner tube and the outer tube having different diameters so as to penetrate the heat insulating case in the chamber, A plurality of induction heating type heating pipes each having a shape filled with black SiC powder and heated at a high temperature by a microwave (microwave (for example, 2,450 MHz / sec)) are installed, A plurality of magnetron and induction heating type heating chambers, A hopper capable of continuously injecting various mineral powders (slag or the like), glass or salt into the upper entrance of the heat insulating case, and a valve A heater for preventing the solidification of the melt, and the like, and the microwave irradiated from the magnetron is applied to the induction heating type heating pipes to heat the ultra-high temperature in the shortest time, It is possible to discharge various kinds of mineral powders, glass or salt continuously as a dissolving liquid, thereby preventing the outflow of gases generated during dissolution of various minerals, ensuring workability and safety, and enabling continuous dissolution, The production efficiency can be greatly improved.

In addition, since there is little heat loss, it is possible to increase the energy saving effect, reduce the production cost of the product, and adjust the inclination angle of the chamber or the driving number of the magnetron to freely adjust the dissolution speed and temperature, It is possible to greatly improve the reliability of its own merchantability and operation.

In addition, it is possible to prevent leakage of electromagnetic waves or microwaves due to the operation of the melting furnace, and in particular, an inner pipe of an induction heating type heating pipe is made of stainless steel having excellent corrosion resistance and high resistance to fire and heat, It is possible to prevent the induction heating type heating pipe from being damaged by a chemical reaction such as chlorine (Cl ₂ ) generated when it is molten by the use of a molten salt, and the lifetime of the induction heating type heating pipe itself can be greatly extended.

The heat generated in the silicon carbide powder filled in the space portion between the inner tube and the outer tube is formed in the space in the heat insulating case by forming the outer tube of the induction heating type heating tube with the ceramic fiber having the characteristic of passing the microwave and cutting off the heat. And the melting effect of the object to be heated using heat generated from the black silicon carbide powder can be greatly increased.

1 is a partially exploded front perspective view of a multi-function continuous melting furnace to which the present invention is applied.
2 is a front sectional view of a multipurpose continuous melting furnace to which the present invention is applied.
3 is a side cross-sectional view of a versatile continuous melting furnace to which the present invention is applied.
Fig. 4 is an installation view of a multi-function continuous melting furnace to which the present invention is applied. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially exploded front perspective view of a multipurpose continuous melting furnace to which the present invention is applied, FIG. 2 is a front sectional view of a multipurpose continuous melting furnace to which the present invention is applied, and FIG. 3 is a side sectional view of a multipurpose continuous melting furnace to which the present invention is applied. And FIG. 4 shows an installation state of the multi-function continuous melting furnace to which the present invention is applied.

According to the present invention, there is provided a multi-

A plurality of magnetron mounting holes 1a are formed at predetermined intervals on the outer side, and a plurality of magnetron mounting holes 1a are formed on the outer side of the magnetron mounting holes 1a, An enclosed chamber (1);

(3) having a cylindrical or polygonal shape corresponding to the shape of the chamber (1) and partially protruding upward and downward and being installed at a predetermined interval in a state of being inserted into the chamber (1) The microwave that is fixedly installed in the chamber 1 so as to form the hollow portion 1b and is emitted through the waveguide 4a of the magnetron 4 and then diffracted in the hollow portion 1b is introduced into the induction heating type heating pipe 5, The heat insulating case 2 for allowing the heat generated by the induction heating type heating pipe 5 to pass to the chamber 1 side is minimized;

When the high voltage is applied from the high voltage transformer of the magnetron driving unit 8 to the chamber 1, the high frequency is oscillated and the chamber 1 is opened, And a microwave of a predetermined band is emitted to the hollow portion 1b of the outer surface of the heat insulating case 2 so that the black silicon carbide powder 5c filled in the induction heating type heating pipes 5 is guided to a predetermined temperature A plurality of magnetrons (4) to be heated;

The space between the outer surface of the inner tube 5a and the inner surface of the outer tube 5b had a specific gravity of 3.12 and a melting point of 2,600 To 2800 ° C. and the hardness of which is higher than that of the diamond and is filled with a black carbonized silicon carbide powder 5c. The microwaves of a predetermined band are emitted from the magnetrons 4 in a state where they are installed at predetermined intervals in the heat insulating case 2 A plurality of induction heating type heating pipes (5) which are induction-heated to generate heat within a predetermined temperature range and allow the objects to be passed therethrough to melt;

The upper and lower ends of the heat insulating case 2 are respectively provided at the upper and lower ends of the heat insulating case 2 so as to prevent the object and the melt from flowing into the space formed between the induction heating type heating pipes 5 in the heat insulating case 2. [ Insulating plates (6) and (7);

A magnetron driving unit 8 for applying a high voltage to the magnetrons 4 when the power is supplied to cause the magnetrons to oscillate at a high frequency;

And a screw 9b which is driven by a motor 9a in the interior of the heat insulating case 5 and is provided on the upper part of the heat insulating case 2 so that the object to be heated is uniformly distributed inside the inner pipe 5a of the induction heating type heating pipes 5 A hopper (9);

(10a) and integrally extending from the bottom of the heat insulating case (2) so as to form an elongate shape, and is arranged to discharge the molten heated object discharged through each of the induction heating type heating pipes (5) A melt outlet 10 for controlling the melt flow rate;

And a melting furnace support (11) fixedly installed on the ground to fix and install the melting furnace at a predetermined angle.

The inner pipe 5a of the induction heating type heating pipe 5 is made of stainless steel having a high melting point of 1,400 to 1,510 DEG C and excellent corrosion resistance and high resistance to fire and heat, Is formed.

The outer tube 5b of the induction heating type heating tube 5 is made of ceramic fiber having a melting point as high as 1,700 to 1,815 DEG C and capable of passing microwaves and blocking heat emission, And is shaped so as to have a relatively larger diameter.

A hinge shaft 12a is provided at a contact portion between the melting furnace support 11 and the outer surface of the chamber 1. Between the melting furnace support 11 and one side of the chamber 1, Type heating pipes 5 in consideration of the characteristics of the object to be heated and the number of operation of the magnetrons 4 through the heating pipes 5 and to control the passing speed of the object to be heated through the induction heating type heating pipes 5, And an inclination angle adjusting means (12) for adjusting the inclination angle.

The inclination angle adjusting means 12 may include a hydraulic cylinder 12b disposed between one side of the melting furnace 11 and one side of the chamber 1.

The chamber 1 further includes a chamber pressure check valve 1c that is automatically opened to lower the pressure in the chamber 1 when the air in the hollow portion 1b expands to a predetermined pressure or higher by heat, The chamber pressure check valve 1c is provided with a mesh net 1d having a mesh of 3 mm or less to prevent the microwave from flowing out.

Further, the melt outlet 10 is further provided with a melt outlet pressure check valve 10b which automatically opens when the internal pressure expands to a predetermined pressure or more, thereby lowering the internal pressure of the melt outlet.

A temperature sensor 10c for detecting the temperature of the molten object in real time and delivering it to the magnetron driver 8 is further provided in the melt outlet 10,

A heater 10d for preventing the coagulation of the molten metal is further provided on the outer surface of the melt discharge port 10 and when the temperature detected by the magnetron driving unit 8 through the temperature sensor 10c falls below a predetermined temperature, The molten liquid coagulation prevention heater 10d is operated to prevent the molten liquid in the molten liquid discharge port 10 from solidifying.

The heat insulating case 2 and the supporting base 3 and the heat insulating plates 6 and 7 for the upper and lower caps are made of alumina fiber board having a high point of 1,000 to 1,800 ° C. and a density of 300 to 600 kg / (Alumina Fiber Board).

A heating temperature setting key 8a of the silicon carbide heating pipe 5 and an operation number setting key 8b of the magnetron 4 are further provided at the input terminal of the magnetron driving unit 8. [

The function and effect of the thus configured multi-use continuous melting furnace of the present invention will be described as follows.

1 to 4, a multi-function continuous melting furnace according to the present invention includes a closed chamber 1, a heat insulating case 2, a plurality of magnetrons 4, a plurality of induction heating type heating pipes 5, The main technical components are the heat insulating plates 6 and 7 for the upper and lower stoppers, the magnetron drive unit 8, the hopper 9, the melt discharge opening 10 and the melting furnace support 11.

At this time, the closed chamber 1 is formed into a cylindrical or polygonal shape having a predetermined diameter, length and volume by using a metal plate (for example, a stainless plate or the like) having a predetermined thickness, A plurality of magnetron mounting holes 1a are bored at intervals, and the upper and lower openings have a clogged shape to prevent microwave leakage.

In the present invention, the chamber 1 is further provided with a chamber pressure check valve 1c so that air in the hollow portion 1b formed between the inner surface of the chamber 1 and the outer surface of the heat insulating case 2 described later The chamber pressure check valve 1c is automatically opened to lower the pressure in the chamber 1 when the chamber 1 is inflated to a predetermined pressure set on the chamber pressure check valve 1c by the heat, It is possible to prevent damage and breakage of the battery pack.

In addition, at the entrance of the chamber pressure check valve 1c, a mesh net 1d having a mesh of 3 mm or less, which prevents microwaves from flowing out, is provided so that internal air is discharged through the chamber pressure check valve 1c It is possible to prevent the microwave diffracting the hollow portion 1b from being blocked by the mesh net 1d of the mesh of 3 mm or less and to prevent the microwave from leaking to the outside, .

The heat insulating case 2 is shaped to have a cylindrical or polygonal shape corresponding to the shape of the chamber 1 and has an outer diameter smaller than the inner diameter of the chamber 1, ). ≪ / RTI >

Such a heat insulating case 2 is inserted into the chamber 1 so as to have a shape in which a part of the upper and lower ends protrude to the outside in a state of incorporating a plurality of induction heating type heating pipes 5 to be described later, A hollow portion 1b having a predetermined height is formed between the inner surface of the chamber 1 and the outer surface of the heat insulating case 2 because the fixing portion 3 is fixedly installed in the chamber 1 through a plurality of spaced support rods 3 .

The heat insulating case 2 having the above-described structure is formed by a microwave which is emitted through the waveguide 4a of the magnetron 4 and then diffracted in the hollow portion 1b, So that the heat generated in the induction heating type heating pipe 5 is not transmitted to the chamber 1, so that the temperature rise of the chamber 1 can be minimized.

As a special vacuum tube for controlling the flow of electrons by applying a magnetic field, the magnetrons 4, which are used for strongly outputting microwaves, are provided with waveguides 4a for emitting microwaves, And end portions thereof are detachably attached to the magnetron mounting holes 1a of the chamber 1, respectively.

When a high voltage is applied from the high voltage transformer of the magnetron driving unit 8, the magnetron 4 oscillates a high frequency to generate a predetermined frequency band of a predetermined frequency band (e.g., a predetermined frequency band) to the inner surface of the chamber 1 and the hollow portion 1b of the outer surface of the heat insulating case 2 The microwaves emitted from the magnetrons 4 are emitted from the hollow portion 1b formed between the inner surface of the chamber 1 and the outer surface of the heat insulating case 2 ) And diffuses the black carbonized silicon powder 5c filled in the induction heating type heating pipes 5 described later at a predetermined temperature (for example, sufficient to melt glass or salt, etc., Temperature lower than 600 deg. C and less than 1,000 deg. C).

Since the ends of the waveguide 4a are detachably attached to the magnetron mounting holes 1a of the chamber 1 as described above, the magnetrons 4 can be easily replaced .

On the other hand, the plurality of induction heating type heating pipes 5 have an inner pipe 5a and an outer pipe 5b formed to have the same length as different diameters in accordance with the melting capacity of the melting furnace, the material to be melted, The space portion formed between the outer surface of the inner tube 5a having a relatively small diameter and the inner surface of the outer tube 5b having a large diameter has a specific gravity of 3.12, a melting point of 2,600 to 2,800 ° C, And has a configuration filled with a high black silicon carbide powder 5c and is provided inside the heat insulating case 2 at a predetermined interval.

A plurality of induction heating type heating pipes 5 having the above-described configuration are arranged such that when microwaves of a predetermined band are emitted from the magnetrons 4 operated in response to the output signal of the magnetron driving unit 8, The black silicon carbide powder 5c filled between the outer surface of the inner pipe 5a and the inner surface of the outer pipe 5b is heated (that is, induction heating) within a predetermined temperature range and passes through the inner space portion of the inner pipe 5a And functions to continuously supply molten material (that is, powder raw material) continuously to the melt discharge port 10 side.

In the present invention, in order to accommodate various materials having different melting points (melting temperatures) of objects to be melted using one melting furnace to which the present invention is applied, the induction heating type heating The materials of the outer tube 5b and the inner tube 5a among the components of the tube 5 were produced under the following conditions.

That is, the inner pipe 5a having a relatively smaller diameter than the inner diameter of the outer pipe 5b among the constituent elements of the induction heating type heating pipe 5 has a high melting point of 1,400 to 1,510 DEG C and excellent corrosion resistance, As well as stainless steels having high abrasion resistance and high strength were used.

The outer tube 5b having a relatively larger diameter than the outer diameter of the inner tube 5a among the constituent elements of the induction heating type heating tube 5 has a melting point as high as 1,700 to 1,815 DEG C, (That is, excellent in heat insulation) was used as a ceramic fiber.

Therefore, the object to be melted using the melting furnace to which the present invention is applied is characterized in that it contains various kinds of mineral powders having a melting point of 1,300 DEG C or lower and has a melting point of 600 to 700 DEG C and a melting point of 800 to 900 DEG C, .

In other words, the stainless steel which is the raw material for the production of the inner pipe 5a among the induction heating type heating pipes 5 has a high melting point of 1,400 to 1,510 占 폚 and the melting point of the ceramic fiber as the raw material for the appearance 5b is 1,700 to 1,815 占 폚 The temperature of the glass is in the range of 600 to 700 ° C. and the temperature of the salt is in the range of 800 to 900 ° C. Therefore, Or more at a temperature of 600 占 폚 or more and 1,300 占 폚 or less at a temperature sufficient to melt various mineral powders, glass or salt as the material to be heated in the black silicon carbide powder 5c having a melting point of 2,600-2,800 占 폚, The inner tube 5a and the outer tube 5b do not melt and maintain the original shape and the microwave can smoothly transmit the outer tube 5b So that the heat generated in the black silicon carbide powder 5c is blocked by the outer tube 5b performing the heat insulating function and is not discharged toward the heat insulating case 2, And is smoothly transferred to the object to be heated through the heater 5a, so that the objects to be continuously supplied can be continuously melted.

In addition, the inner pipe 5a formed of stainless steel and the outer pipe 5b formed of ceramic fiber can be freely formed in any shape, and the charging degree of the black silicon carbide powder 5c can be adjusted to the inner pipe 5a and the outer pipe 5b. Therefore, the induction heating type heating pipe 5 can be freely manufactured without being affected by shape, length, or the like.

Particularly, since the inner pipe 5a itself formed of stainless steel is very excellent in corrosion resistance, it is possible to prevent gas such as gas containing various kinds of waste which may be generated when the various objects to be heated are melted, So that it can be used for a long period of time without cleaning and the like.

In addition, the outer tube 5b is formed of a ceramic fiber having a function of passing microwaves and cutting off the heat, so that heat including heat generated in the black silicon carbide powder 5c flows into the induction heating type heating tube 5 can be prevented from being discharged to the space portion in the heat insulating case 2 through the outer surface 5b of the black silicon carbide powder 5c and the melting effect of the object to be heated using the heat generated from the black silicon carbide powder 5c can be increased.

In addition, in the present invention, the black silicon carbide raw material is melted and directly molded into a tubular shape to form a particulate powder rather than being provided with the induction heating type heating pipe 5, The microwave is emitted from the magnetron 4 to induce heating of the black silicon carbide powder 5c through the outer tube 5b formed by the ceramic fiber, The heat generation amount can be further increased as compared with the tube shape, and the power consumption can be greatly reduced.

That is, in the case of a tube formed by melting black silicon carbide, there is a fixed pore generated in the firing process, but there is no fluid pore. On the other hand, since the fine pores formed between the black silicon carbide powder of the fine particles are all fluid, Since the heating time of the microwave is very short and the heating time of the black carbonized silicon powder particles is heated by the microwave, the fine particles contact with each other and generate sparks. The amount of heat generated by the black powder of silicon carbide is further increased, and the power consumption can be greatly reduced.

Meanwhile, in the present invention, when manufacturing the induction heating type heating pipe 5, as described above, a space defined between the inner pipe 5a and the outer pipe 5b having the same length as the diameters of different diameters, The microwave emitted from the magnetrons 4 is filled with the black silicon carbide powder 5c between the outer surface of the inner tube 5a and the inner surface of the outer tube 5b, 5b so as to smoothly reach the black silicon carbide powder 5c without any trouble, so that a desired calorific value can be accurately obtained.

In addition, since the object to be melted which passes through the inner pipe 5a is not directly contacted with the black silicon carbide powder 5c but is formed of stainless steel having high corrosion resistance and high abrasion resistance, When the object of the object to be heated into the heating type heating pipe 5 is, for example, salt, the inner tube 5a is not corroded by the chlorine (Cl ₂ ) component generated in the process of melting the salt, The black silicon carbide powder 5c does not directly contact the black silicon carbide powder 5c because of the inner pipe 5a and therefore the black silicon carbide powder 5c is chemically reacted by the chemical substance (for example, chlorine (Cl ₂ ) It is possible to prevent damage to the induction heating type heating pipe 5 which may be caused by the induction heating type heating pipe itself.

The heat insulating plates 6 and 7 for the upper and lower caps are provided at the upper and lower ends of the heat insulating case 2 and are respectively provided in the spaces formed between the induction heating type heating pipes 5 in the heat insulating case 2, And the function of preventing the inflow of the heated object and the melt.

In this case, when the heat insulating plates 6 and 7 for the upper and lower caps are provided so as to directly contact the upper and lower ends of the induction heating type heating pipe 5 in the heat insulating case 2, There is a fear that the heat insulating plates 6 and 7 for the upper and lower plugs may be separated from the upper and lower ends of the heat insulating case 2. In this case,

Therefore, when the upper and lower ends of the induction heating type heating pipes 5 in the heat insulating case 2 are positioned, the raw material inlet holes 6a are formed at the positions where the upper and lower ends of the heat insulating plates 6, The heating pipe insertion rods 6b and 7b are protruded and formed on the rear surfaces of the raw material inflow holes 6a and 7a without drilling holes 7a of the induction heating type pipes 5a and 5b, When the heat insulating plates 6 and 7 for the upper and lower plugs are provided, the respective heating tube insertion rods 6b and 7b are partially inserted into the induction heating type heating pipes 5, It is preferable that a gap is formed between the inner surfaces of the heat insulating plates 6 and 7 for the lower stopper and the upper and lower ends of the induction heating type heating pipes 5 so that air can flow.

On the other hand, considering that the heat insulating plates 6 and 7 for the upper and lower caps including the heat insulating case 2 and the support base 3 are in direct or indirect contact with the induction heating type heating pipes 5, The induction heating type heating pipes 5 are heated to 600 to 1,000 ° C. by induction heating by heating them to an alumina fiber board having a high density of 1,000 to 1,800 ° C. and a density of 300 to 600 kg / The heat insulating case 2 and the support base 3 and the heat insulating plates 6 and 7 for the upper and lower caps are not melted or thermally deformed to maintain their own shape.

The magnetron driving unit 8 applies a high voltage to the magnetrons 4 through a high voltage transformer when a power voltage is supplied from a solar cell or the like including a commercial power supply voltage, thereby causing the magnetrons to perform high frequency oscillation.

In addition, in the present invention, a heating temperature setting key 8a for setting the heating temperature of the induction heating type heating pipes 5 to the input terminal of the magnetron driving unit 8, and a heating temperature setting key 8b for arbitrarily adjusting the driving number of the magnetrons 4 The operation number setting key 8b is provided.

Therefore, the operator of the melting furnace is required to heat the induction heating type heating pipes 5 in consideration of the characteristics of raw materials such as various mineral powders, glass, or salt, etc. which are dissolved through the induction heating type heating pipes 5, The temperature can be set through the heating temperature setting key 8a and the number of the magnetrons 4 can be adjusted and set through the operating number setting key 8b to greatly improve the compatibility of the melting furnace itself .

The hopper 9 is provided with a screw 9b which is driven by a motor 9a and in the state that the hopper 9 is installed on the upper part of the heat insulating case 2, Shaped heating pipes 5 to the inside of the inner pipe 5a.

The melt discharge port 10 is provided with a manual or automatic valve 10a for controlling the amount of melt discharge as well as for controlling the amount of the melt discharged from the melt discharge port 10. The melt discharge port 10 is integrally formed with a bottom portion of the heat insulating case 2, Heating and heating pipe 5, and then the object to be continuously discharged is kept temporarily stagnated, and then the object to be heated is discharged through the manual or automatic valve 10a It functions to discharge continuously.

At this time, when the melt outlet port 10 is further provided with a melt outlet port pressure check valve 10b so that the inner pressure of the melt outlet port 10 is expanded to a predetermined pressure set by the melt outlet port pressure check valve 10b , The melt outlet port pressure check valve 10b is automatically opened to lower the pressure in the melt outlet 10 so that the melt outlet 10 can be prevented from being damaged or damaged by the expansion pressure of the melt.

In the present invention, a temperature sensor 10c is additionally provided in the melt discharge port 10 to detect the temperature of the molten liquid collected at the melt discharge port 10 side in real time by the temperature sensor 10c, Further, a heater 10d for preventing solidification of the molten liquid, which is under the control of the magnetron drive unit 8, is further provided on the outer surface of the melt discharge opening 10.

Therefore, when the melting furnace to which the present invention is applied operates in the magnetron driving unit 8, the melt temperature and the predetermined temperature in the melt discharge opening 10 detected in real time through the temperature sensor 10c are compared with each other, It is possible to operate the heater 10d for preventing the coagulation of the molten metal when the temperature of the molten liquid collected in the discharge port 10 is lowered to a predetermined temperature or lower and the molten liquid stagnated in the molten liquid discharge port 10 is lowered in temperature It can be prevented in advance that it is solidified.

The melting furnace 11 is basically fixed in the form of a steel tower on the ground, and functions to make the melting furnace to which the present invention is applied can be inclined at a predetermined angle desired by the operator.

In the present invention, a hinge shaft 12a is provided between the melting point support 11 and the contact portion between the outer surface of the chamber 1 and the melting point support 11 and one side of the chamber 1 And further includes an inclination angle adjusting means 12 including a hydraulic cylinder 12b and the like.

Accordingly, in consideration of the characteristics of the raw material to be melted and passed through the induction heating type heating pipes 5 and the number of operation of the magnetrons 4, the operator of the melting furnace can control the inclination angle of the melting furnace itself through the inclination angle adjusting means 12 So that the passing speed of the raw material passing through the induction heating type heating pipes 5 can be controlled.

The hydraulic cylinder 12b installed at the inclination angle adjusting means 12 is installed between one side of the melting furnace support 11 and one side of the chamber 1 so that the rod length of the hydraulic cylinder 12b It is possible to smoothly rotate the melting furnace itself about the hinge shaft 12a by a relatively heavy chain to adjust it to a desired angle of inclination.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Which will be apparent to those skilled in the art.

1: chamber
1a: Magnetron mounting hole 1b: Hollow portion
1c: Chamber pressure check valve 1d: Net mesh
2: Insulation case
3: Support
4: Magnetron 4a: Waveguide
5: Induction heating type heating pipe 5a: Inner pipe
5b: Appearance 5c: Black silicon carbide powder
6, 7: Insulating plate for upper and lower caps
6a, 7a: raw material inflow hole 6b, 7b: heating pipe insertion rod
8: Magnetron drive section
8a: Heat generation temperature setting key 8b: Operation number setting key
9: Hopper
9a: Motor 9b: Screw
10: melt outlet
10a: manual or automatic valve 10b: melt outlet pressure check valve
10c: Temperature sensor 10d: Heater for preventing coagulation of melt
11: melting zone
12: inclination angle adjusting means
12a: Hinge shaft 12b: Hydraulic cylinder

Claims (9)

A chamber having a cylindrical shape or a polygonal shape having a diameter, a length and a volume, a plurality of magnetron mounting holes perforated outside at a predetermined interval, and upper and lower openings having a closed shape;
A plurality of supporting members having a cylindrical or polygonal shape corresponding to the shape of the chamber and partially protruding upward and downward and inserted at a predetermined interval in a state of being inserted into the chamber, ;
When a high voltage is applied from the magnetron driving unit, a high frequency is generated to emit a microwave of a predetermined band into the inner surface of the chamber and the hollow portion of the outer surface of the heat insulating case to induce the black silicon carbide powder filled in the induction heating type heating pipes, A plurality of magnetrons to be heated;
Wherein a space between the outer surface of the inner tube and the inner surface of the outer tube is filled with black silicon carbide powder so that a space portion is formed between the inner tube and the outer tube having different diameters, A plurality of induction heating type heating tubes for inducing heating of the black silicon carbide powder when the microwaves of a predetermined band are emitted from the magnetrons to generate heat within a predetermined temperature range, ;
Upper and lower heat insulating plates respectively installed at upper and lower ends of the heat insulating case to prevent the object and the melt from flowing into the space formed between the induction heating type heating tubes in the heat insulating case;
A magnetron driving unit for applying a high voltage to the magnetrons when the power is supplied to allow the magnetrons to oscillate at a high frequency;
A hopper installed at an upper portion of the heat insulating case to uniformly supply the object to be heated into the inner pipe of the induction heating type heating pipes;
A melt discharge port integrally formed and extended from the bottom of the heat insulating case to form a molten object to be discharged through each of the induction heating type heat pipes;
And a melting furnace which is fixedly installed on the ground and fixes the melting furnace to be inclined at a predetermined angle; and a continuous melting furnace using the magnetron and the silicon carbide powder.
The method according to claim 1,
The inner tube of the induction heating type heating tube is formed of stainless steel having a melting point of 1,400 to 1,510 ° C. and the outer tube is formed of a ceramic fiber having a high melting point of 1,700 to 1,815 ° C. and passing microwaves and blocking heat emission Continuous melting furnace using magnetron and silicon carbide powder.
The method according to claim 1,
And a tilt angle adjusting means for adjusting a tilt angle of the melting furnace between the melting furnace support and one side of the chamber so as to adjust the tilt angle of the melting furnace and the silicon carbide Continuous melting furnace using powder.
The method of claim 3,
Wherein the inclination angle adjusting means comprises:
And a hydraulic cylinder is provided between one side of the chamber and one side of the melting furnace, and a continuous melting furnace using the magnetron and the silicon carbide powder.
The method according to claim 1,
The chamber pressure check valve is further provided with a chamber pressure check valve that automatically opens when the air in the hollow portion expands to a predetermined pressure or more by heat to lower the pressure in the chamber. And a mesh net of ㎜ or less is provided on the surface of the continuous melting furnace, and a continuous melting furnace using the magnetron and silicon carbide powder.
The method according to claim 1,
Wherein the melt outlet port is further provided with a melt outlet pressure check valve that automatically opens when the internal pressure expands to a predetermined pressure or more to lower the pressure in the melt outlet.
The method according to claim 1,
A temperature sensor for detecting the temperature of the molten raw material in real time and transmitting the detected temperature to the magnetron driving unit is further provided in the melt discharge port and a heater for preventing the coagulation of the molten liquid is further provided on the outer surface of the melt discharge port, Wherein when the temperature detected by the sensor is lowered to a predetermined temperature or less, the molten liquid in the molten liquid discharge port is prevented from solidifying by operating the heater for preventing the coagulation of the molten liquid. Continuous melting furnace used.
The method according to claim 1,
The heat insulating case, the support base, and the heat insulating plate for the upper and lower caps,
Characterized in that the crucible is formed of an alumina fiber board having a high melting point of 1,000 to 1,800 DEG C and a density of 300 to 600 in kg / m < 3 >, and a continuous melting furnace using the magnetron and silicon carbide powder.
The method according to claim 1,
Wherein the magnetron driving unit further comprises an input terminal for setting a heating temperature of the silicon carbide heating pipe and a setting key for operating the magnetrons.

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