CA2856790A1 - Tunnel type dual-cycle vacuum smelting furnace and method thereof - Google Patents
Tunnel type dual-cycle vacuum smelting furnace and method thereof Download PDFInfo
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- CA2856790A1 CA2856790A1 CA2856790A CA2856790A CA2856790A1 CA 2856790 A1 CA2856790 A1 CA 2856790A1 CA 2856790 A CA2856790 A CA 2856790A CA 2856790 A CA2856790 A CA 2856790A CA 2856790 A1 CA2856790 A1 CA 2856790A1
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- smelting furnace
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
- F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
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- General Engineering & Computer Science (AREA)
- Silicon Compounds (AREA)
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Abstract
Disclosed are a tunnel-type twin-circulation vacuum smelting furnace and a method therefor. The furnace comprises: a tunnel-type vacuum reaction chamber, wherein a reaction area is provided therein, an induction coil is provided in the reaction area, and a thermal insulation area is provided around the reaction area; silicon melting furnaces A and B connected to two sides of the tunnel-type vacuum reaction chamber; multiple crystals provided above the tunnel-type vacuum reaction chamber and used for collecting crystals; a forge welding flux powder and inert gas injection pipe, wherein forge welding flux powder and inert gas enter the tunnel-type vacuum reaction chamber together with liquid silicon to perform a reaction; an operation platform capable of being alternately slanted and upon which the tunnel-type vacuum reaction chamber and the silicon melting furnaces A and B are fixed; and a vacuum pump and a water pump connected to a crystallizer.
Description
TUNNEL TYPE DUAL-CYCLE VACUUM SMELTING FURNACE AND
METHOD THEREOF
FIELD OF THE INVENTION
The invention relates to a magnesium reduction device and method thereof, in particular to a tunnel type dual-cycle vacuum smelting furnace and method thereof.
BACKGROUND OF THE INVENTION
A major conventional method for manufacturing magnesium metal is the Pidgeon process.
In the method, silicoferrite is used as a reductant, and a horizontal furnace is used, the furnace body consists of refractory bricks laid on the ground, inside the furnace is horizontally provided with a plurality of reduction tanks which are internally filled with reactant pellets, coal or gas or oil is used as a fuel, a manual feeding and unloading method is used for combustion and heating, the reduction tank is heated by radiant heat from a reverberatory furnace arranged outside the reduction tank, the radiant heat is transferred by the reduction tank to the reactant pellets inside the reduction tank, and heat is mutually relay transferred among the reactant pellets. Therefore, this is a peripheral heating method.
The conventional reduction furnace has the disadvantages of low reaction rate, high energy consumption, serious pollution, short service life and extremely low safety, with deflagration or explosion accidents occurred frequently in ignition.
SUMMARY OF THE INVENTION
For the purpose of overcoming the disadvantages of the prior art, the invention provides a tunnel type dual-cycle vacuum smelting furnace and method thereof.
The technical scheme for realization of the furnace in the invention is that:
the tunnel type dual-cycle vacuum smelting furnace includes:
A tunnel type vacuum reaction chamber, which is internally provided with a reaction area, an induction coil is arranged inside the reaction area, and a heat preservation area is arranged around the reaction area;
A silicon smelting furnace A, connected to one side of the tunnel type vacuum reaction chamber via an insulating pipe A, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace A flows through the insulating pipe A into the reaction area of the tunnel type vacuum reaction chamber;
A silicon smelting furnace B, connected to the other side of the tunnel type vacuum reaction chamber via an insulating pipe B, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace B flows through the insulating pipe B into the reaction area of the tunnel type vacuum reaction chamber;
A crystallizer or a plurality of crystallizers, arranged above the tunnel type vacuum reaction chamber, communicated with the reaction area of the tunnel type vacuum reaction chamber at the lower end thereof, and used for collecting crystals;
A forging pigment and inert gas injection pipe, respectively connected to the insulating pipe A and the insulating pipe B; forging pigment and inert gas inside enter the tunnel type vacuum reaction chamber together with silicon liquid for reaction;
An inclinable work platform, on which the tunnel type vacuum reaction chamber and the silicon smelting furnaces A and B are fixed, at the center of gravity on the bottom thereof is
METHOD THEREOF
FIELD OF THE INVENTION
The invention relates to a magnesium reduction device and method thereof, in particular to a tunnel type dual-cycle vacuum smelting furnace and method thereof.
BACKGROUND OF THE INVENTION
A major conventional method for manufacturing magnesium metal is the Pidgeon process.
In the method, silicoferrite is used as a reductant, and a horizontal furnace is used, the furnace body consists of refractory bricks laid on the ground, inside the furnace is horizontally provided with a plurality of reduction tanks which are internally filled with reactant pellets, coal or gas or oil is used as a fuel, a manual feeding and unloading method is used for combustion and heating, the reduction tank is heated by radiant heat from a reverberatory furnace arranged outside the reduction tank, the radiant heat is transferred by the reduction tank to the reactant pellets inside the reduction tank, and heat is mutually relay transferred among the reactant pellets. Therefore, this is a peripheral heating method.
The conventional reduction furnace has the disadvantages of low reaction rate, high energy consumption, serious pollution, short service life and extremely low safety, with deflagration or explosion accidents occurred frequently in ignition.
SUMMARY OF THE INVENTION
For the purpose of overcoming the disadvantages of the prior art, the invention provides a tunnel type dual-cycle vacuum smelting furnace and method thereof.
The technical scheme for realization of the furnace in the invention is that:
the tunnel type dual-cycle vacuum smelting furnace includes:
A tunnel type vacuum reaction chamber, which is internally provided with a reaction area, an induction coil is arranged inside the reaction area, and a heat preservation area is arranged around the reaction area;
A silicon smelting furnace A, connected to one side of the tunnel type vacuum reaction chamber via an insulating pipe A, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace A flows through the insulating pipe A into the reaction area of the tunnel type vacuum reaction chamber;
A silicon smelting furnace B, connected to the other side of the tunnel type vacuum reaction chamber via an insulating pipe B, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace B flows through the insulating pipe B into the reaction area of the tunnel type vacuum reaction chamber;
A crystallizer or a plurality of crystallizers, arranged above the tunnel type vacuum reaction chamber, communicated with the reaction area of the tunnel type vacuum reaction chamber at the lower end thereof, and used for collecting crystals;
A forging pigment and inert gas injection pipe, respectively connected to the insulating pipe A and the insulating pipe B; forging pigment and inert gas inside enter the tunnel type vacuum reaction chamber together with silicon liquid for reaction;
An inclinable work platform, on which the tunnel type vacuum reaction chamber and the silicon smelting furnaces A and B are fixed, at the center of gravity on the bottom thereof is
2 provided with a rotating shaft stool, and at both ends on the bottom thereof is respectively provided with an ejection cylinder A and an ejection cylinder B; under the action of the ejection cylinder A and the ejection cylinder B, the work platform alternately inclines, realizes alternately circular flow of silicon liquid in the silicon smelting furnace A
and the silicon smelting furnace B, and finishes continuous reaction;
A vacuum pump, connected to the crystallizer;
And a water pump, connected to the crystallizer.
The technical scheme of the furnace also includes:
The tunnel type vacuum reaction chamber is a steel shell, whose inner lining is successively provided with a refractory coating, a thermal-protective coating and an induction coil.
The crystallizer is provided with a cooling-off sleeve inside which is provided with a tapered crystallization sleeve, on the cooling-off sleeve is respectively provided with a cool water inlet, a cool water outlet and a vacuum port, wherein the cool water inlet is connected to the water pump, the cool water outlet is connected to the water tank, the vacuum port is connected to the vacuum pump, and the cooling-off sleeve is sealed and covered with an end cover on its port.
Both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with an upper slag-drip opening on their top edge mouths.
Both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with a lower slag-drip opening on their bottom surfaces.
Both the insulating pipe A and the insulating pipe B are externally provided with a thermal insulation layer.
The reaction area of the tunnel type vacuum reaction chamber is higher than the silicon
and the silicon smelting furnace B, and finishes continuous reaction;
A vacuum pump, connected to the crystallizer;
And a water pump, connected to the crystallizer.
The technical scheme of the furnace also includes:
The tunnel type vacuum reaction chamber is a steel shell, whose inner lining is successively provided with a refractory coating, a thermal-protective coating and an induction coil.
The crystallizer is provided with a cooling-off sleeve inside which is provided with a tapered crystallization sleeve, on the cooling-off sleeve is respectively provided with a cool water inlet, a cool water outlet and a vacuum port, wherein the cool water inlet is connected to the water pump, the cool water outlet is connected to the water tank, the vacuum port is connected to the vacuum pump, and the cooling-off sleeve is sealed and covered with an end cover on its port.
Both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with an upper slag-drip opening on their top edge mouths.
Both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with a lower slag-drip opening on their bottom surfaces.
Both the insulating pipe A and the insulating pipe B are externally provided with a thermal insulation layer.
The reaction area of the tunnel type vacuum reaction chamber is higher than the silicon
3 smelting furnace A and the silicon smelting furnace B.
The method for realization of the invention is as below:
Silicon liquid melted is poured into the silicon smelting furnace A or the silicon smelting furnace B;
The silicon liquid in the silicon smelting furnace A or the silicon smelting furnace B
flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B;
Forging pigment and inert gas are blown into the injection pipe and enter into the tunnel type vacuum reaction chamber together with silicon liquid;
The tunnel type vacuum reaction chamber is heated to a temperature ranging from 1260 C to 1900 C and vacuumed, and magnesium metal gas is generated by reaction of the forging pigment and silicon liquid;
Attached to the tapered crystallization sleeve, magnesium metal gas is cooled down to form magnesium crystal;
The silicon liquid does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, silicon liquid in the silicon smelting furnace A and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystals by continuous reaction.
The invention has the advantages of prolonging the reaction chamber by adoption of tunnel type production mode, increasing the quantity of reduction tanks, realizing cyclic continuous operation, increasing the use ratio of heat energy, improving the production efficiency and reducing energy consumption.
The method for realization of the invention is as below:
Silicon liquid melted is poured into the silicon smelting furnace A or the silicon smelting furnace B;
The silicon liquid in the silicon smelting furnace A or the silicon smelting furnace B
flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B;
Forging pigment and inert gas are blown into the injection pipe and enter into the tunnel type vacuum reaction chamber together with silicon liquid;
The tunnel type vacuum reaction chamber is heated to a temperature ranging from 1260 C to 1900 C and vacuumed, and magnesium metal gas is generated by reaction of the forging pigment and silicon liquid;
Attached to the tapered crystallization sleeve, magnesium metal gas is cooled down to form magnesium crystal;
The silicon liquid does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, silicon liquid in the silicon smelting furnace A and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystals by continuous reaction.
The invention has the advantages of prolonging the reaction chamber by adoption of tunnel type production mode, increasing the quantity of reduction tanks, realizing cyclic continuous operation, increasing the use ratio of heat energy, improving the production efficiency and reducing energy consumption.
4 BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of the overall structure of the invention.
FIG. 2 is a vertical view of FIG. 1.
FIG. 3 is a B-B cutaway view of FIG. 2.
FIG. 4 is a C-C cutaway view of FIG. 2.
FIG. 5 is a side view of FIG. 1, showing the work platform, the ejection cylinder A, the ejection cylinder B and the pivot point.
FIG. 6 is a space diagram of FIG. 1 (not including the work platform).
In the Figs., I ejection cylinder A, 2 silicon smelting furnace A, 21 induction coil, 22 upper slag-drip opening, 23 lower slag-drip opening, 3 forging pigment and inert gas injection pipe, 4 crystallizer, 41 cooling-off sleeve, 42 tapered crystallization sleeve, 43 cool water inlet, 44 vacuum port, 45 cool water outlet, 5 insulating pipe B, 6 silicon smelting furnace B, 7 ejection cylinder B, 8 tunnel type vacuum reaction tank, 81 thermal-protective coating, 82 refractory coating, 83 reaction area, 9 rotating shaft stool, 10 rotating shaft, 11 insulating pipe A, 111 insulating layer, 12 work platform, and 13 safety valve.
DETAILED DESCRIPTION OF THE EMBODIMENTS
Further description of the invention is made in combination with the accompanying drawings:
Embodiment: magnesium reduction furnace As shown in FIG. 1, the reduction furnace substantially comprises a tunnel type vacuum reaction chamber 8, a silicon smelting furnace (A) 2, a silicon smelting furnace (B) 6,
FIG. 1 is a front view of the overall structure of the invention.
FIG. 2 is a vertical view of FIG. 1.
FIG. 3 is a B-B cutaway view of FIG. 2.
FIG. 4 is a C-C cutaway view of FIG. 2.
FIG. 5 is a side view of FIG. 1, showing the work platform, the ejection cylinder A, the ejection cylinder B and the pivot point.
FIG. 6 is a space diagram of FIG. 1 (not including the work platform).
In the Figs., I ejection cylinder A, 2 silicon smelting furnace A, 21 induction coil, 22 upper slag-drip opening, 23 lower slag-drip opening, 3 forging pigment and inert gas injection pipe, 4 crystallizer, 41 cooling-off sleeve, 42 tapered crystallization sleeve, 43 cool water inlet, 44 vacuum port, 45 cool water outlet, 5 insulating pipe B, 6 silicon smelting furnace B, 7 ejection cylinder B, 8 tunnel type vacuum reaction tank, 81 thermal-protective coating, 82 refractory coating, 83 reaction area, 9 rotating shaft stool, 10 rotating shaft, 11 insulating pipe A, 111 insulating layer, 12 work platform, and 13 safety valve.
DETAILED DESCRIPTION OF THE EMBODIMENTS
Further description of the invention is made in combination with the accompanying drawings:
Embodiment: magnesium reduction furnace As shown in FIG. 1, the reduction furnace substantially comprises a tunnel type vacuum reaction chamber 8, a silicon smelting furnace (A) 2, a silicon smelting furnace (B) 6,
5 crystallizers 4, a forging pigment and inert gas injection pipe 3, and a work platform 12; the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are connected to two sides of the tunnel type vacuum reaction chamber 8 via the insulating pipe (A) 11 and the insulating pipe (B) 5, a plurality of crystallizers 4 are arranged on the tunnel type vacuum reaction chamber 8; the tunnel type vacuum reaction chamber 8, the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are fixed on the work platform 12; at the center of gravity on the bottom of the work platform 12 is provided with a rotating shaft stool 9, and at both ends on the bottom of the work platform 12 are respectively connected with an ejection cylinder (A) 1 and an ejection cylinder (B) 7; each of the crystallizers 4 is internally provided with a cooling-off sleeve 41 and a tapered crystallization sleeve 42, on the crystallizers 4 is respectively provided with a cool water inlet 43, a cool water outlet 45 and a vacuum port 44, wherein the cool water inlet 43 is connected to a water pump (not drawn up in the Figs.), the cool water outlet 45 is connected to a water tank (not drawn up in the Figs.), the vacuum port 44 is connected to a vacuum pump (not drawn up in the Figs.), and the insulating pipe (A) II
and the insulating pipe (B) 5 are respectively connected with a forging pigment and inert gas injection pipe 3.
The tunnel type vacuum reaction chamber 8 is a steel shell, which is internally provided with a reaction area 83, the reaction area 83 is internally provided with a refractory coating 82 and externally provided with a thermal-protective coating 81, and an induction coil 21 is arranged between the refractory coating 82 and the thermal-protective coating 81.
The silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are internally provided with a refractory coating 82 and a thermal-protective coating 81, the refractory coating 82 is internally provided with an induction coil 21, both the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are respectively provided with an upper slag-drip
and the insulating pipe (B) 5 are respectively connected with a forging pigment and inert gas injection pipe 3.
The tunnel type vacuum reaction chamber 8 is a steel shell, which is internally provided with a reaction area 83, the reaction area 83 is internally provided with a refractory coating 82 and externally provided with a thermal-protective coating 81, and an induction coil 21 is arranged between the refractory coating 82 and the thermal-protective coating 81.
The silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are internally provided with a refractory coating 82 and a thermal-protective coating 81, the refractory coating 82 is internally provided with an induction coil 21, both the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are respectively provided with an upper slag-drip
6 opening 22 on their top edge mouths and with a lower slag-drip opening 23 on their bottom surfaces; the upper slag-drip opening 22 is used for draining dross, and the lower slag-drip opening 23 is used for draining slags remelting.
Both the insulating pipe (A) 11 and the insulating pipe (B) 5 are externally provided with a thermal insulation layer 111.
The tunnel type vacuum reaction chamber, the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are equivalent to intermediate frequency furnaces.
Working Principle Silicon liquid melted at a temperature of about 1300 C and prepared according to a certain proportion are poured into the silicon smelting furnace A or the silicon smelting furnace B; the silicon liquid is heated and flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B, forging pigment and inert gas are blown through the forging pigment and inert gas injection pipe into the tunnel type vacuum reaction chamber together with the silicon liquid when the silicon liquid flows through the insulating pipe A or the insulating pipe B; the tunnel type vacuum reaction chamber is continued to be heated to about 1600 C and vacuumized; at this time magnesium metal gas is generated by reaction of the forging pigment and the silicon liquid, the magnesium metal gas flows into crystallizers and cools down to be magnesium crystals, the silicon liquid flows into the other silicon smelting furnace from the tunnel type vacuum reaction chamber and does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, the silicon liquid in the silicon smelting furnace A
and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystals by continuous reaction.
Both the insulating pipe (A) 11 and the insulating pipe (B) 5 are externally provided with a thermal insulation layer 111.
The tunnel type vacuum reaction chamber, the silicon smelting furnace (A) 2 and the silicon smelting furnace (B) 6 are equivalent to intermediate frequency furnaces.
Working Principle Silicon liquid melted at a temperature of about 1300 C and prepared according to a certain proportion are poured into the silicon smelting furnace A or the silicon smelting furnace B; the silicon liquid is heated and flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B, forging pigment and inert gas are blown through the forging pigment and inert gas injection pipe into the tunnel type vacuum reaction chamber together with the silicon liquid when the silicon liquid flows through the insulating pipe A or the insulating pipe B; the tunnel type vacuum reaction chamber is continued to be heated to about 1600 C and vacuumized; at this time magnesium metal gas is generated by reaction of the forging pigment and the silicon liquid, the magnesium metal gas flows into crystallizers and cools down to be magnesium crystals, the silicon liquid flows into the other silicon smelting furnace from the tunnel type vacuum reaction chamber and does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, the silicon liquid in the silicon smelting furnace A
and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystals by continuous reaction.
7 The tunnel type vacuum reaction chamber is respectively provided with a pressure safety valve 13 at both sides, the pressure safety valve 13 is automatically opened when the pressure in the tunnel type vacuum reaction chamber exceeds a pressure of 5kg.
8
Claims (8)
1. A tunnel type dual-cycle vacuum smelting furnace wherein comprising:
a tunnel type vacuum reaction chamber, which is internally provided with a reaction area, an induction coil is arranged inside the reaction area, and a heat preservation area is arranged around the reaction area;
a silicon smelting furnace A, connected to one side of the tunnel type vacuum reaction chamber via an insulating pipe A, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace A flows through the insulating pipe A into the reaction area of the tunnel type vacuum reaction chamber;
a silicon smelting furnace B, connected to the other side of the tunnel type vacuum reaction chamber via an insulating pipe B, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace B flows through the insulating pipe B into the reaction area of the tunnel type vacuum reaction chamber;
a crystallizer or a plurality of crystallizers, arranged above the tunnel type vacuum reaction chamber, communicated with the reaction area of the tunnel type vacuum reaction chamber at the lower end thereof, and used for collecting crystals;
a forging pigment and inert gas injection pipe, respectively connected to the insulating pipe A and the insulating pipe B; forging pigment and inert gas inside enter the tunnel type vacuum reaction chamber together with silicon liquid for reaction;
An inclinable work platform, on which the tunnel type vacuum reaction chamber and the silicon smelting furnaces A and B are fixed, on the bottom of whose center of gravity is provided with a rotating shaft stool, and on the bottoms of both ends thereof are respectively provided with an ejection cylinder A and an ejection cylinder B; under the action of the ejection cylinder A and the ejection cylinder B, the work platform alternately inclines, realizes alternately circular flow of silicon liquid in the silicon smelting furnace A
and the silicon smelting furnace B, and finishes continuous reaction;
a vacuum pump, connected to the crystallizer; and a water pump, connected to the crystallizer.
a tunnel type vacuum reaction chamber, which is internally provided with a reaction area, an induction coil is arranged inside the reaction area, and a heat preservation area is arranged around the reaction area;
a silicon smelting furnace A, connected to one side of the tunnel type vacuum reaction chamber via an insulating pipe A, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace A flows through the insulating pipe A into the reaction area of the tunnel type vacuum reaction chamber;
a silicon smelting furnace B, connected to the other side of the tunnel type vacuum reaction chamber via an insulating pipe B, is internally provided with a refractory coating and a thermal-protective coating; the refractory coating is internally provided with the induction coil, silicon liquid in the silicon smelting furnace B flows through the insulating pipe B into the reaction area of the tunnel type vacuum reaction chamber;
a crystallizer or a plurality of crystallizers, arranged above the tunnel type vacuum reaction chamber, communicated with the reaction area of the tunnel type vacuum reaction chamber at the lower end thereof, and used for collecting crystals;
a forging pigment and inert gas injection pipe, respectively connected to the insulating pipe A and the insulating pipe B; forging pigment and inert gas inside enter the tunnel type vacuum reaction chamber together with silicon liquid for reaction;
An inclinable work platform, on which the tunnel type vacuum reaction chamber and the silicon smelting furnaces A and B are fixed, on the bottom of whose center of gravity is provided with a rotating shaft stool, and on the bottoms of both ends thereof are respectively provided with an ejection cylinder A and an ejection cylinder B; under the action of the ejection cylinder A and the ejection cylinder B, the work platform alternately inclines, realizes alternately circular flow of silicon liquid in the silicon smelting furnace A
and the silicon smelting furnace B, and finishes continuous reaction;
a vacuum pump, connected to the crystallizer; and a water pump, connected to the crystallizer.
2. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein the tunnel type vacuum reaction chamber is a steel shell, whose inner lining is successively provided with a refractory coating, a thermal-protective coating and an induction coil.
3. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein the crystallizer is provided with a cooling-off sleeve inside which is provided with a tapered crystallization sleeve, on the cooling-off sleeve is respectively provided with a cool water inlet, a cool water outlet and a vacuum port, wherein the cool water inlet is connected to the water pump, the cool water outlet is connected to the water tank, the vacuum port is connected to the vacuum pump, and the cooling-off sleeve is sealed and covered with an end cover on its port.
4. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with an upper slag-drip opening on their top edge mouths; both the silicon smelting furnace A and the silicon smelting furnace B are respectively provided with a lower slag-drip opening on their bottom surfaces.
5. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein the insulating pipe A and the insulating pipe B are externally provided with a thermal insulation layer.
6. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein the reaction area of the tunnel type vacuum reaction chamber is higher than the silicon smelting furnace A
and the silicon smelting furnace B.
and the silicon smelting furnace B.
7. The tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein the tunnel type vacuum reaction chamber is provided with a safety valve.
8. The method for magnesium reduction in the tunnel type dual-cycle vacuum smelting furnace of claim 1, wherein comprising steps as below:
silicon liquid melted is poured into the silicon smelting furnace A or the silicon smelting furnace B;
the silicon liquid in the silicon smelting furnace A or the silicon smelting furnace B flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B;
forging pigment and inert gas are blown into the injection pipe and enter into the tunnel type vacuum reaction chamber together with silicon liquid;
the tunnel type vacuum reaction chamber is heated to a temperature ranging from 1260 °C to 1900 °C and vacuumed, and magnesium metal gas is generated by reaction of the forging pigment and silicon liquid;
attached to the tapered crystallization sleeve, magnesium metal gas is cooled down to form magnesium crystal;
the silicon liquid does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, silicon liquid in the silicon smelting furnace A and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystal by continuous reaction.
silicon liquid melted is poured into the silicon smelting furnace A or the silicon smelting furnace B;
the silicon liquid in the silicon smelting furnace A or the silicon smelting furnace B flows into the tunnel type vacuum reaction chamber through the insulating pipe A or the insulating pipe B;
forging pigment and inert gas are blown into the injection pipe and enter into the tunnel type vacuum reaction chamber together with silicon liquid;
the tunnel type vacuum reaction chamber is heated to a temperature ranging from 1260 °C to 1900 °C and vacuumed, and magnesium metal gas is generated by reaction of the forging pigment and silicon liquid;
attached to the tapered crystallization sleeve, magnesium metal gas is cooled down to form magnesium crystal;
the silicon liquid does not flow any more when it reaches equilibrium in the silicon smelting furnace A and the silicon smelting furnace B; at this time, silicon liquid in the silicon smelting furnace A and the silicon smelting furnace B starts circular flow alternatively by alternatively lifting the ejection cylinder A and the ejection cylinder B, simultaneously the forging pigment and the inert gas are continuously flowed in for generating magnesium crystal by continuous reaction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100072306 | 2013-01-09 | ||
| CN201310007230.6A CN102994779B (en) | 2013-01-09 | 2013-01-09 | Tunnel type Two-way Cycle vacuum smelting furnace and its method |
| PCT/CN2014/070156 WO2014108052A1 (en) | 2013-01-09 | 2014-01-06 | Tunnel-type twin-circulation vacuum smelting furnace and method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2856790A1 true CA2856790A1 (en) | 2014-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2856790A Abandoned CA2856790A1 (en) | 2013-01-09 | 2014-01-06 | Tunnel type dual-cycle vacuum smelting furnace and method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102994779B (en) |
| CA (1) | CA2856790A1 (en) |
| WO (1) | WO2014108052A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994779B (en) * | 2013-01-09 | 2017-03-01 | 九洲资源控股集团有限公司 | Tunnel type Two-way Cycle vacuum smelting furnace and its method |
| CN106966393B (en) * | 2017-04-18 | 2019-03-19 | 中国药科大学 | A kind of vertical sodium carbonate method absorbent charcoal activation furnace system |
| CN107101497B (en) * | 2017-06-19 | 2022-07-01 | 中南大学 | High-low temperature double-body vacuum hot-pressing sintering furnace |
| CN113369099A (en) * | 2020-03-09 | 2021-09-10 | 株洲弗拉德科技有限公司 | Tunnel type vacuum continuous impregnation production system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2648655B2 (en) * | 1993-02-04 | 1997-09-03 | 日本碍子株式会社 | Method for producing electrode for producing metal beryllium pebble |
| CN1163622C (en) * | 2000-09-29 | 2004-08-25 | 于洪喜 | Internal heating method magnesium-smelting productive technology and equipment |
| CN1132710C (en) * | 2001-03-22 | 2003-12-31 | 上海交通大学 | Horizontal conticaster dedicated for Mg-alloy |
| CN101708538B (en) * | 2009-11-16 | 2014-01-15 | 王仁辉 | High-performance magnesium alloy parison continuous casting production line |
| CN102994779B (en) * | 2013-01-09 | 2017-03-01 | 九洲资源控股集团有限公司 | Tunnel type Two-way Cycle vacuum smelting furnace and its method |
-
2013
- 2013-01-09 CN CN201310007230.6A patent/CN102994779B/en not_active Expired - Fee Related
-
2014
- 2014-01-06 CA CA2856790A patent/CA2856790A1/en not_active Abandoned
- 2014-01-06 WO PCT/CN2014/070156 patent/WO2014108052A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN102994779B (en) | 2017-03-01 |
| CN102994779A (en) | 2013-03-27 |
| WO2014108052A1 (en) | 2014-07-17 |
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