CN110260667A - The discharge system of rock wool electric smelter - Google Patents
The discharge system of rock wool electric smelter Download PDFInfo
- Publication number
- CN110260667A CN110260667A CN201910467669.4A CN201910467669A CN110260667A CN 110260667 A CN110260667 A CN 110260667A CN 201910467669 A CN201910467669 A CN 201910467669A CN 110260667 A CN110260667 A CN 110260667A
- Authority
- CN
- China
- Prior art keywords
- homogeneous pond
- discharge
- electric smelter
- pond
- rock wool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
- F27D2027/002—Gas stirring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
The invention discloses a kind of discharge systems of rock wool electric smelter, including electric smelter, homogeneous pond, nitrogen gas generator and movable chute；The homogeneous pond is closed, equipped with feed inlet and discharge port, homogeneous pond feed inlet is connect for accepting electric smelting furnace discharge with electric smelter discharge port, homogeneous pond discharge port is connect with movable chute to discharge for homogeneous pond, hollow graphite electrode is equipped in homogeneous pond, for heating melt in homogeneous pond, the nitrogen gas generator outside homogeneous pond is bubbled melt body by the connection of the hollow channel of nitrogen pipeline and hollow graphite electrode.The rock wool product prepared through discharge system of the invention, acidity coefficient can be stably held in 1.8~2.0, and shot content can reduce by 0.5% or so, and thermal coefficient can reduce 0.005W/ (mK) under 25 DEG C of environment, and product qualification rate can be improved 1% or more.
Description
Technical field
The present invention relates to technical field of rock wool production, and in particular to a kind of discharge system of rock wool electric smelter.
Background technique
Rock wool is with basalt etc. for primary raw material, the inorganic fiberboard being process through high-temperature fusion, have light weight,
Thermal coefficient is small, heat absorption, it is non-ignitable the features such as.Overwhelming majority rock wool production line all uses cupola melting raw material at present, and uses
Electric smelter melt raw material is a kind of emerging technology, and, process stabilization high with melting efficiency, properties of product are more excellent, production flexible
The more high significant advantage of property.
Furnace cupola puts molten iron frequency height, puts within about 4~6 hours once, can generate agitation to melt in furnace when putting molten iron and make
With, and furnace diameter is smaller, therefore does not allow to be also easy to produce buildup in furnace cupola.Electric smelter does not need frequently to put molten iron, depending on the condition of production 1~
Put within 2 months a molten iron.The discharge method of conventional electric smelter is direct current discharging, i.e. the melt that is formed of melting sources is from electric smelting furnace discharge
Mouth outflow, is imported into centrifuge into fibre through movable chute.Electric smelter furnace diameter is larger, and furnace bottom volume is larger, and it is low to put molten iron frequency, leads
It causes furnace bottom fluidity of molten poor, easily generates dead angle in furnace bottom, form buildup, cause electric smelting furnace discharge ingredient uneven, influence rock wool
The quality of product.
Summary of the invention
For this purpose, the present invention provides a kind of discharge system of rock wool electric smelter, increase between electric smelter and movable chute equal
Matter pond, electric smelting furnace discharge enter movable chute into homogeneous pond in homogeneous pond after homogeneous.The rock wool product of the system production,
Acidity coefficient can be stably held in 1.8~2.0, and shot content can reduce by 0.5% or so, and thermal coefficient can drop under 25 DEG C of environment
Low 0.005W/ (mK), product qualification rate can be improved 1% or more.
To achieve the above object, the scheme that the present invention uses is:
A kind of discharge system of rock wool electric smelter, including electric smelter, homogeneous pond, nitrogen gas generator and movable chute；It is described
Homogeneous pond be it is closed, homogeneous pond is equipped with feed inlet and discharge port, and homogeneous pond feed inlet connect with electric smelter discharge port for holding
Electric smelting furnace discharge is connect, homogeneous pond discharge port is connect with movable chute to discharge for homogeneous pond, is equipped at least one in homogeneous pond
Empty graphite electrode, hollow graphite electrode are inserted into the bottom in homogeneous pond, the nitrogen gas generator outside homogeneous pond by nitrogen pipeline with
The hollow channel of hollow graphite electrode connects, and the bottom outflow of hollow channel of the nitrogen through hollow graphite electrode is melted in homogeneous pond
Body is bubbled, and hollow graphite electrode heats melt.
Further, the feed side of the movable chute is equipped with baffle, and the side wall of baffle and movable chute surrounds accommodating cavity,
Siphon discharge nozzle is equipped in homogeneous pond, siphon discharge nozzle is in inverted U-shaped, and one end is inserted into the bottom in homogeneous pond, and the other end is inserted
Enter in the accommodating cavity of movable chute, opening of the siphon discharge nozzle in homogeneous pond is higher than its opening in movable chute, siphon
Discharge nozzle is equipped with isolating valve.Go out melt in empty pond when siphon discharge nozzle is overhauled for homogeneous pond.
Further, the electric smelter discharge port is equipped with high temperature resistant hydraulic gate valve.It can by high temperature resistant hydraulic gate valve
It adjusts the discharging speed of electric smelter and closes electric smelter discharge port in maintenance.
Further, the cross section in the homogeneous pond is shunk from lateral exit side is fed, the width and feed side of feed inlet
Equivalent width, the width and exit side equivalent width of discharge port, homogeneous pond ontology is protruded into and out of material mouth.Fluidity of molten is good,
Feed inlet and discharge outlet will not generate buildup, protrude convenient pool wall and homogeneous pond and electric smelter and movable chute into and out of material mouth
Connection, facilitate input and output material.
Further, homogeneous pond side wall is equipped with thermocouple, is used for inside the measurement end insertion homogeneous pond of thermocouple
Detect the melt temperature in homogeneous pond.According to the start-stop of the temperature control hollow graphite electrode of thermocouple detection, homogeneous pond is controlled
The temperature of interior melt.
Further, the thermocouple, hollow graphite electrode connect controller.Mating automation electric-control system, can obtain
To being accurately controlled temperature, and can be needed according to production technology by curve automatic temperature-control.
Further, melt residence time in balancing reservoir is 10~15 seconds.The residence time too short effect for not having homogeneous
Fruit, overlong time are influenced into fine quality.
Beneficial effects of the present invention:
1, by increasing homogeneous pond between electric smelter and movable chute, electric smelting furnace discharge is into homogeneous pond, in homogeneous pond
Enter movable chute after middle homogeneous.Using the rock wool product of the system production, acidity coefficient can be stably held in 1.8~2.0, slag
Ball content can reduce by 0.5% or so, and thermal coefficient can reduce 0.005W/ (mK) under 25 DEG C of environment, and product qualification rate can mention
It is high by 1% or more.
2, by hollow graphite electrode reheating melt, the electric arc which generates can cover entire homogeneous pond, can make
Melt temperature is maintained at 1350 DEG C or more in pond, ensure that the mobility of melt and the stability of quality, and electrode will not be to pond
Wall damages.
3, N is connected by the hollow channel of hollow graphite electrode2Bubbler, interruption are blown into N2, atmosphere is formed in the melt
Bubble, air pocket rise in rupture process, strongly agitation melt, and the bath composition for flowing out discharge port is uniform, performance is stablized；It is hollow
The heat radiation of graphite electrode and N2It is bubbled synergistic effect, melt in pond can be made to flow to all directions, better homogenizing effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the discharge system of the rock wool electric smelter of first embodiment of the invention.
Fig. 2 is the top view of Fig. 1, eliminates movable chute.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing and a kind of preferred reality
Mode is applied technical solution of the present invention is clearly and completely described.
Embodiment 1
Refering to fig. 1 and Fig. 2, the discharge system of rock wool electric smelter include electric smelter 10, homogeneous pond 20, nitrogen gas generator 50 and
Movable chute 30.
The outside of the discharge port 11 of electric smelter 10 is equipped with the first connecting flange 12, and the first connecting flange 12 is band neck method
It is blue.
Homogeneous pond 20 is the enclosed slot being made of roof, bottom wall and four side walls, and the side close to electric smelter discharge port is
Feed side, is exit side with the side that feed side is away from each other, and the cross section of electric smelter is shunk from lateral exit side is fed.Homogeneous pond
20 are made of steel plate 201, and the inside of steel plate 201 serves as a contrast refractory brick 202.Also settable insulating layer on the outside of steel plate, for homogeneous pond
Heat preservation and safety operation.The side wall of homogeneous pond feed side is equipped with feed inlet 21, the width and homogeneous pond feed side of feed inlet 21
Equivalent width, and feed inlet 21 protrude feed side side wall towards electric smelter 10 extend.The outside of feed inlet is equipped with the second connection
Flange 22, the second connecting flange are adapted to the first connecting flange.Homogeneous pond and electric smelter are connected by the first connecting flange 12, second
22 detachable connection of acting flange is equipped with high temperature resistant and surges gate valve between the first connecting flange 12 and the second connecting flange 22
13.The side wall of exit side is equipped with discharge port 23, the width of discharge port 23 and the equivalent width of homogeneous pond exit side, discharge port 23
Roof be homogeneous pond roof, discharge port 23 protrude exit side side wall towards movable chute 30 extend.
Homogeneous pond discharge port 23 is set to the surface of movable chute 30, when normal discharging, melt from 23 overflow of discharge port to
In movable chute 30.The feed end of movable chute 30 is equipped with partition 31, and the height of partition 31 is lower than the height of movable chute, partition
Enclosing with the side wall of piston chute is in an accommodating cavity 32.40 one end of siphon discharge nozzle of inverted U passes through discharge port 23 and is inserted into homogeneous
The bottom in pond, the other end are inserted into accommodating cavity 32, and the one end being inserted into accommodating cavity 32 is equipped with isolating valve 41.Siphon discharge nozzle 40
The preferred refractory ceramics of material.When equal homogeneous pond needs to overhaul, the isolating valve 41 on siphon discharge nozzle 40 is opened, due to being siphoned off
Opening of the expects pipe 40 in homogeneous pond is higher than its opening in movable chute, melt under the action of liquid level difference in homogeneous pond
Continuously movable chute 30 is flowed into through siphon discharge nozzle 40.
The top in homogeneous pond 20 is equipped with nitrogen pipeline 51, and the lower wall of nitrogen pipeline 51 is opened up there are two nitrogen outlet.Nitrogen
Feed channel 51 is closed at one end, and the other end is connect by one section of hose with nitrogen gas generator 50, and hose facilitates nitrogen gas generator more
It changes.Two hollow graphite electrodes 24 are equipped in homogeneous pond 20 vertically, the upper end of the hollow channel of hollow graphite electrode 24 is equipped with interior
Screw thread, internal screw thread internal screw thread connect one section of connecting tube 25, and the other end of connecting tube 25 is connect with the nitrogen outlet of nitrogen pipeline 51.
Hollow graphite electrode and nitrogen gas generator are the prior art.In the present embodiment, the nitrogen of TN-10LN model is selected to occur
Device.
The side wall in homogeneous pond 20 is equipped with thermocouple 26, and the measurement end of thermocouple 26 is deep into measurement melt temperature in homogeneous pond
Degree.Thermocouple 26 is the prior art, and in the present embodiment, thermocouple selects WRB1-430-450R250 model.
In the present embodiment, hollow graphite electrode 24 and thermocouple 26 connect with the controller of electric smelter discharge system respectively
It connects, the melt temperature parameter of measurement is sent to controller by thermocouple 26, and controller is controlled according to the temperature control curve of setting
The start and stop of hollow graphite electrode 24, thus by melt temperature control in the range of technique requires.
The volume in homogeneous pond is matched according to the yield of electric smelter, and residence time general control of the material in balancing reservoir is 10
~15S, residence time too short influence homo-effect, residence time too long influence molding are reduced into fine quality.
The working method of embodiment 1 is:
To guarantee rock wool quality, melt temperature need to be maintained at 1350 DEG C or more in balancing reservoir.Controller is according to the temperature of setting
The start and stop of line traffic control of writing music silicon-carbon bar electrode 24, by melt body temperature control in the range of technique requires；It needs to connect according to operating condition
Continuous or interruption starts nitrogen gas generator 50, and the nitrogen in nitrogen gas generator enters hollow graphite electrode 24, warp through nitrogen pipeline 51
The hollow channel bottom outflow of hollow graphite electrode is bubbled melt, in the heat radiation of hollow graphite electrode and the association of bubbling
Under same-action, melt is flowed to all directions in homogeneous pond, and bath composition is homogenized.
Claims (7)
1. a kind of discharge system of rock wool electric smelter, which is characterized in that including electric smelter, homogeneous pond, nitrogen gas generator and activity
Chute；The homogeneous pond be it is closed, homogeneous pond is equipped with feed inlet and discharge port, and homogeneous pond feed inlet and electric smelter discharge port connect
It connects for accepting electric smelting furnace discharge, homogeneous pond discharge port is connect with movable chute to discharge for homogeneous pond, is equipped with extremely in homogeneous pond
A few hollow graphite electrode, hollow graphite electrode are inserted into the bottom in homogeneous pond, and the nitrogen gas generator outside homogeneous pond passes through nitrogen
It flows out to equal the bottom of the connection of the hollow channel of feed channel and hollow graphite electrode, hollow channel of the nitrogen through hollow graphite electrode
Melt is bubbled in matter pond, and hollow graphite electrode heats melt.
2. the discharge system of rock wool electric smelter as described in claim 1, which is characterized in that the feed side of the movable chute is set
There is a baffle, the side wall of baffle and movable chute surrounds accommodating cavity, is equipped with siphon discharge nozzle in homogeneous pond, and siphon discharge nozzle is in being inverted
U-shaped, one end be inserted into homogeneous pond bottom, the other end be inserted into movable chute accommodating cavity in, siphon discharge nozzle is in homogeneous pond
Interior opening is higher than its opening in movable chute, and siphon discharge nozzle is equipped with isolating valve.
3. the discharge system of rock wool electric smelter as claimed in claim 1 or 2, which is characterized in that the electric smelter discharge port is set
There is high temperature resistant hydraulic gate valve.
4. the discharge system of rock wool electric smelter as claimed in claim 1 or 2, which is characterized in that the cross section in the homogeneous pond
It is shunk from lateral exit side is fed, the width and feed side equivalent width of feed inlet, the width and exit side width one of discharge port
It causes, homogeneous pond ontology is protruded into and out of material mouth.
5. the discharge system of rock wool electric smelter as described in claim 1, which is characterized in that homogeneous pond side wall is equipped with heat
Galvanic couple, the measurement end insertion homogeneous pond inside of thermocouple is for detecting the melt temperature in homogeneous pond.
6. the discharge system of rock wool electric smelter as claimed in claim 5, which is characterized in that thermocouple, hollow graphite electrode connect
Connect controller.
7. the discharge system of rock wool electric smelter as claimed in claim 1 or 2, which is characterized in that melt stops in balancing reservoir
Time is 10~15 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910467669.4A CN110260667B (en) | 2019-05-31 | 2019-05-31 | Discharge system of rock wool electric melting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910467669.4A CN110260667B (en) | 2019-05-31 | 2019-05-31 | Discharge system of rock wool electric melting furnace |
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| Publication Number | Publication Date |
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| CN110260667A true CN110260667A (en) | 2019-09-20 |
| CN110260667B CN110260667B (en) | 2020-09-22 |
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| CN201910467669.4A Active CN110260667B (en) | 2019-05-31 | 2019-05-31 | Discharge system of rock wool electric melting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551864A (en) * | 2020-12-11 | 2021-03-26 | 交城义望铁合金有限责任公司 | Heat-preservation homogeneous flow guide device for direct-current electric furnace |
| CN113503739A (en) * | 2021-06-21 | 2021-10-15 | 南京玻璃纤维研究设计院有限公司 | Discharge port flow control and cooling device of mineral wool electric melting furnace |
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| EP1336664A2 (en) * | 2002-02-14 | 2003-08-20 | Pyrotek Japan Limited | Inline melt degassing apparatus with rotary impeller and heater |
| CN106001528A (en) * | 2016-07-13 | 2016-10-12 | 北京麦特尔科技有限公司 | Continuous casting tundish direct-current plasma heating device using a plurality of graphite hollow bars as electrodes |
| CN106746584A (en) * | 2016-12-27 | 2017-05-31 | 中钢集团鞍山热能研究院有限公司 | A kind of utilization molten blast furnace slag one-step method produces the method and device of mineral wool |
| CN206593482U (en) * | 2017-03-07 | 2017-10-27 | 合智熔炼装备（上海）有限公司 | A kind of vaccum sensitive stove chute |
| CN108204741A (en) * | 2018-02-01 | 2018-06-26 | 江阴市蓝天工业炉窑制造有限公司 | Natural gas mineral wool heating furnace |
| CN208366064U (en) * | 2018-06-21 | 2019-01-11 | 青岛联合冶金研究院有限公司 | Handle the smelting furnace of thermal-state blast furnace slag |
-
2019
- 2019-05-31 CN CN201910467669.4A patent/CN110260667B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1336664A2 (en) * | 2002-02-14 | 2003-08-20 | Pyrotek Japan Limited | Inline melt degassing apparatus with rotary impeller and heater |
| CN106001528A (en) * | 2016-07-13 | 2016-10-12 | 北京麦特尔科技有限公司 | Continuous casting tundish direct-current plasma heating device using a plurality of graphite hollow bars as electrodes |
| CN106746584A (en) * | 2016-12-27 | 2017-05-31 | 中钢集团鞍山热能研究院有限公司 | A kind of utilization molten blast furnace slag one-step method produces the method and device of mineral wool |
| CN206593482U (en) * | 2017-03-07 | 2017-10-27 | 合智熔炼装备（上海）有限公司 | A kind of vaccum sensitive stove chute |
| CN108204741A (en) * | 2018-02-01 | 2018-06-26 | 江阴市蓝天工业炉窑制造有限公司 | Natural gas mineral wool heating furnace |
| CN208366064U (en) * | 2018-06-21 | 2019-01-11 | 青岛联合冶金研究院有限公司 | Handle the smelting furnace of thermal-state blast furnace slag |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551864A (en) * | 2020-12-11 | 2021-03-26 | 交城义望铁合金有限责任公司 | Heat-preservation homogeneous flow guide device for direct-current electric furnace |
| CN113503739A (en) * | 2021-06-21 | 2021-10-15 | 南京玻璃纤维研究设计院有限公司 | Discharge port flow control and cooling device of mineral wool electric melting furnace |
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| Publication number | Publication date |
|---|---|
| CN110260667B (en) | 2020-09-22 |
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Effective date of registration: 20200217 Address after: 210012, No. 30, Xi An Road, Yuhua West Road, Jiangsu, Nanjing Applicant after: Nanjing Glass Fibre Research and Design Institute company limited Address before: 210001 Andry 30 Yuhua West Road, Yuhuatai District, Nanjing City, Jiangsu Province Applicant before: Sinoma Science & Technology Co.,Ltd. |
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