CN203704649U - Crucible used for induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass andcast stones - Google Patents
Crucible used for induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass andcast stones Download PDFInfo
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- CN203704649U CN203704649U CN201320664803.8U CN201320664803U CN203704649U CN 203704649 U CN203704649 U CN 203704649U CN 201320664803 U CN201320664803 U CN 201320664803U CN 203704649 U CN203704649 U CN 203704649U
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- crucible
- induction furnace
- wool
- furnace
- devitrified glass
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Abstract
The utility model discloses a crucible used for an induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass and cast stones. The crucible is a graphite crucible, mounted on the innermost side of a combustion chamber of the induction furnace and used as a refractoryworking surface of a weld pool; and high-refractoriness and high-slag-resistance composite ramming materials are arranged and tamped between the graphite crucible and an induction furnace coil and between the graphite crucible and refractory filler prefabricated at the furnace bottom. The crucible has the advantages as follows: the power density and the electrothermal efficiency of theinduction furnace can be improved substantially, and leakage and waste of an electromagnetic field can be reduced; the crucible is faster and more even in heating as well as beneficial to the improvement on the production efficiency and the melt quality; the crucible is high in refractory performance, better in impervious performance, acidresistance and alkali resistance and capable of reducing pollution to a melt; through triple protection of mechanical sealing, nitrogen and inert gases as well as combustible gas, the crucible and a stopper rod are prevented from being burnt, and the service life of a furnace lining is longer than 1 year under thecondition of normal usage; a sand seal can ensure that the combustion chamber is sealed during rotation of a furnace lid and can meet the requirement of the melt for mechanical stirring.
Description
Technical field
The utility model belongs to the technical field of inorganic materials technique.Specifically, the utility model relates to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products.
Background technology
At present, in domestic mineral wool, rock wool production process, most of producer is used furnace cupola as melting unit, and basalt, slag, dolomite etc. are made to fiber with supplying with fibroblast equipment after coke fusing in furnace cupola.The raw materials such as fusing ore can cause a large amount of energy resource consumptions and more serious environmental pollution.
Furnace cupola leans on into furnace charge amount control composition, and reaction time is long; The control of melt temperature and quantity delivered, regulates by coke proportioning and air port, and temperature and quantity delivered exist and contact directly, and improves quantity delivered and all cannot realize when intensification while reducing quantity delivered or cooling, controls inconvenience.When the fiberizing device fabrication short time interrupts, in stove, melt must flow to accident hole by chute, can not blowing out, otherwise after cool stove again former, the fuel of blow-on and time waste very big.Use furnace cupola to prepare melt, big for environment pollution, energy consumption is high, belongs to country and eliminates technique.
Some enterprises obtain hot slag from blast furnace, use electric arc furnaces (arc resistance furnace) to heat up to hot slag, and carry out supplying with fibroblast equipment after small size composition adjustment, produce mineral wool.Arc resistance furnace can directly utilize hot slag, tumbles to control melt flow by high-precision hydraulic pressure, electric system control smelting furnace constant speed.But this type of equipment thermal efficiency is on the low side, and large electric current, that short net impedance causes electricity to damage is large, and electrical efficiency, power factor are lower, and energy loss is large.Simultaneously due to high-temperature electric arc scaling loss electrode, cause that consumption of electrode is large, residue contaminated melt.And electric arc can impel between the materials such as C, SiO2, CaO, MgO and reacts, generate the materials such as silicate, carbide, part is sneaked into slag liquid, and part is in furnace bottom deposition, contaminated melt, composition and poor temperature uniformity; Affect slag liquid quality and the working of a furnace.Plant maintenance amount is large, when black furnace or melt crust, starts and must add the material of conduction, and slag liquid quality is changed.Impact to electrical network when the starting the arc, current interruption is larger.
Due to above defect, the technique of arc resistance furnace heat hot slag fails to apply at home.
There is the method for the combustion gas tank furnace heat hot slag of the similar glass furnace of some enterprises, produce the mineral wool of low acidity coefficient, control melt flow with sideboard.But the method is limited to intensification and the modified ability of tank furnace, can only the poorest mineral wool of production quality, be not suitable for more than 1.2 mineral wool, the rock wools of acidity coefficient and produce.Composition must continuous setup in combustion gas tank furnace stove, and while producing the product that different components requires, the adjustment time is long, efficiency is low, and waste is large, and melt heats up and be difficult to exceed 1500 ℃, and in stove, melt cannot stir, and composition uniformity is poor.
Devitrified glass, cast stone are generally used cupola melting ore, then melt transfer is incubated in combustion gas tank furnace in producing, and add Nucleating Agent and make its uniform ingredients by melt natural flow, then carry out cast molding.This technique melt flow control and combustion gas tank furnace operating mine slag wool are similar.The necessary continuous setup of composition in stove, while producing the product of different components requirement, the adjustment time is long, efficiency is low, and waste is large.And melt heats up and is difficult to exceed 1450 ℃, in stove, melt cannot stir, and composition uniformity is poor.The raw materials such as fusing ore can cause a large amount of energy resource consumptions and more serious environmental pollution equally.
Utility model content
The utility model is provided for the crucible of induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products, its objective is as this production technology provides applicable technological equipment, improves electrothermal efficiency, improves its life-span.
To achieve these goals, the technical scheme that the utility model is taked is:
Crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products of the present utility model, described crucible is graphite crucible, is arranged on the inner side of described induction furnace burner hearth, as the fire-resistant working face in molten bath; Between the prefabricated fire-resistant inserts of described graphite crucible and induction furnace coil, furnace bottom, adopt the compound ramming mass of high refractoriness, high resistance to slag to fill and tamping.
Described graphite crucible is built into graphite brick, in described graphite brickwork joint, fills sintered binding agent.
The bottom of described graphite crucible is provided with the taper hole coordinating with the mouth of a river, is used for installing the mouth of a river.
The top of described graphite crucible covers with bell, and the edge of described bell seals with sand seal, to guarantee the sealing of bell when rotation burner hearth.
Described induction furnace is provided with stopper, and described stopper is through described bell, and its lower end coordinates with the taper hole at the described mouth of a river by cone.
Described bell and stopper seam crossing are provided with sealing ring; On sealing ring, be provided with nitrogen or blowing inert gas device.Use the mode of nitrogen or blowing inert gas, prevent the inside and outside gas exchange of stopper oxidation and stove.
Described bell is provided with charge door, and described charge door place is provided with fuel gas nozzle.In stove, add fuel gas, to improve furnace temperature and to prevent graphite crucible, stopper scaling loss.
The utility model adopts technique scheme, and its graphite crucible is other heater relatively, has the following advantages:
1, volume is larger, weight is higher, can significantly improve power density and the electrothermal efficiency of induction furnace, reduces leakage and the waste of electromagnetic field;
2, heating sooner, more even, be of value to and enhance productivity and melt quality;
3, fire resistance is higher, impervious, antiacid, alkali resistance is better, can reduce the pollution to melt;
4, nitrogen, inert gas and fuel gas triple protection are added in mechanical seal, guarantee crucible, stopper not burning, and in normal situation about using, lining durability exceedes 1 year;
5, when sand seal can be guaranteed bell rotation, burner hearth keeps sealing, can adapt to the churned mechanically needs of melt.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, be labeled as:
1, stopper, 2, sealing ring, 3, bell, 4, sand seal, 5, induction furnace coil, 6, compound ramming mass, 7, graphite crucible, 8, the mouth of a river, 9, fire-resistant inserts.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present utility model is described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present utility model, technical scheme.
The utility model structure as shown in Figure 1, for a kind of for the crucible of induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products.In order to solve the problem of prior art existence and to overcome its defect, realize the object of invention, the technical scheme that the utility model is taked is:
The structure of the fire-resistant working face in molten bath and protective device thereof as shown in Figure 1, crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products of the present utility model, described crucible is graphite crucible 7, be arranged on the inner side of described induction furnace burner hearth, as the fire-resistant working face in molten bath; Between the prefabricated fire-resistant inserts 9 of described graphite crucible 7 and induction furnace coil 5, furnace bottom, adopt the compound ramming mass 6 of high refractoriness, high resistance to slag to fill and tampings.
The utility model uses high power density electrode material; be processed into the graphite brick of certain size and shape; and be assembled into crucible; as the fire-resistant working face of the heater in induction furnace and molten bath; and adopt burner hearth to seal; in conjunction with the method for nitrogen, inert gas and fuel gas duplicate protection, keep the graphite material in stove not to be burnt, thereby improve crucible induction furnace furnace lining electrothermal efficiency, improve its life-span.
Crucible as the fire-resistant working face in molten bath time, in elect magnetic field induction heating, has the function of heater concurrently simultaneously.
Described graphite crucible 7 use graphite bricks are built into, and in described graphite brickwork joint, fill sintered binding agent.After high temperature sintering, the binding agent between graphite brick brickwork joint is subject to heat cure, and graphite brick is interosculated, and forms integral crucible, to prevent the melt leakage in crucible.
When crucible assembling, brickwork joint uses pitch+graphite powder+conductive agent as binding agent, guarantees that under high temperature, graphite brick sinters entirety into it, forms integral crucible; Enough solid residues and electric conductivity guarantee that brickwork joint is non-leakage, not arcing.
The bottom of described graphite crucible 7 is provided with the taper hole coordinating with the mouth of a river 8, in order to the mouth of a river 8 to be installed.
The top of described graphite crucible 7 covers with bell 3, and the edge of described bell 3 seals with sand seal 4, burner hearth sealing when guaranteeing that bell 3 rotates.
Described induction furnace is provided with stopper 1, and described stopper 1 is through described bell 3, and its lower end coordinates with the taper hole at the described mouth of a river 8 by cone.
Described bell 3 is provided with sealing ring 2 with stopper 1 seam crossing; On sealing ring 2, be provided with nitrogen or blowing inert gas device.Use the mode of nitrogen or blowing inert gas, prevent the inside and outside gas exchange of stopper 1 oxidation and stove.
Mechanical seal+nitrogen, inert gas and fuel gas triple protection, guarantee crucible, stopper not burning.
Between crucible upper end and bell 3, build compound carbon brick or the microporous corundum brick of certain altitude by laying bricks or stones, prevent electric leakage.
Described bell 3 is provided with charge door, and described charge door place is provided with fuel gas nozzle.In stove, add fuel gas, to improve furnace temperature and to prevent graphite crucible 7, stopper 1 scaling loss.
Outside crucible, stamp mass uses refractoriness to exceed the compound ramming mass of carbon-silicon carbide of 1800 ℃, prevents scorification, in the time that crucible damages, can prevent melt leakage, burns out induction coil.
Between induction furnace coil 5 and compound ramming mass 6, induction furnace coil 5 and fire-resistant inserts 9, pad fireproof thermal insulation plate, reduce furnace wall radiation loss, improve the induction furnace thermal efficiency.
Below by reference to the accompanying drawings the utility model is exemplarily described.Obviously; the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (7)
1. for the crucible of induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products, it is characterized in that: described crucible is graphite crucible (7), be arranged on the inner side of described induction furnace burner hearth, as the fire-resistant working face in molten bath; Between the prefabricated fire-resistant inserts (9) of described graphite crucible (7) and induction furnace coil (5), furnace bottom, adopt compound ramming mass (6) to fill and tamping.
2. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 1, it is characterized in that: described graphite crucible (7) is built into graphite brick, in described graphite brickwork joint, fills sintered binding agent.
3. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 1, it is characterized in that: the bottom of described graphite crucible (7) is provided with the taper hole coordinating with the mouth of a river (8), is used for installing the mouth of a river (8).
4. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 1, it is characterized in that: the bell for top (3) of described graphite crucible (7) covers sand seal for edge (4) sealing of described bell (3).
5. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 3, it is characterized in that: described induction furnace is provided with stopper (1), described stopper (1) is through described bell (3), and its lower end coordinates with the taper hole at the described mouth of a river (8) by cone.
6. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 5, it is characterized in that: described bell (3) is provided with sealing ring (2) with stopper (1) seam crossing; On sealing ring (2), be provided with nitrogen or blowing inert gas device.
7. according to the crucible for induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products claimed in claim 5, it is characterized in that: described bell (3) is provided with charge door, and described charge door place is provided with fuel gas nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664803.8U CN203704649U (en) | 2013-10-26 | 2013-10-26 | Crucible used for induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass andcast stones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664803.8U CN203704649U (en) | 2013-10-26 | 2013-10-26 | Crucible used for induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass andcast stones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704649U true CN203704649U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664803.8U Expired - Fee Related CN203704649U (en) | 2013-10-26 | 2013-10-26 | Crucible used for induction furnace to produce products such as slag wool, mineral wool, microcrystalline glass andcast stones |
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| CN (1) | CN203704649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575103A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Crucible used for producing slag wool, rock wool, glass ceramic and cast stone products in induction furnace |
| CN114303035A (en) * | 2019-08-30 | 2022-04-08 | 法国原子能源和替代能源委员会 | Induction furnace comprising an additional resonant circuit |
-
2013
- 2013-10-26 CN CN201320664803.8U patent/CN203704649U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575103A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Crucible used for producing slag wool, rock wool, glass ceramic and cast stone products in induction furnace |
| CN103575103B (en) * | 2013-10-26 | 2016-08-17 | 芜湖新兴铸管有限责任公司 | Mineral wool, rock wool, devitrified glass, the crucible of cast stone series products is produced for induction furnace |
| CN114303035A (en) * | 2019-08-30 | 2022-04-08 | 法国原子能源和替代能源委员会 | Induction furnace comprising an additional resonant circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20201026 |