CN102419088A - Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode - Google Patents
Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode Download PDFInfo
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- CN102419088A CN102419088A CN2011104086173A CN201110408617A CN102419088A CN 102419088 A CN102419088 A CN 102419088A CN 2011104086173 A CN2011104086173 A CN 2011104086173A CN 201110408617 A CN201110408617 A CN 201110408617A CN 102419088 A CN102419088 A CN 102419088A
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- carbon block
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Abstract
The invention relates to graphite cathode carbon block preheating equipment capable of continuously heating in a reciprocating mode. The equipment is characterized in that: the hearth of the graphite cathode carbon block preheating equipment has a tunnel shape; conveying roller tables are configured inside and outside a furnace; resistance wire heaters which are uniformly distributed and can autonomously adjust power are arranged over the hearth; a frequency adjustable axial flow fan, a high pressure nitrogen pipe, a low pressure nitrogen pipe, a circulating cooling water pipe and a smoke exhausting pipe are arranged over the hearth; a furnace door is provided with a gas locking device; and a reversible gas exhaust stopping device is arranged on a hearth side. A set of graphite cathode carbon block phosphorus pig iron cast preheating equipment is provided for aluminum electrolysis, the blank of the graphite cathode carbon block phosphorus pig iron cast preheating equipment for aluminum electrolysis cells is made up, and continuous production in a four-shift three-operation mode can be realized. According to a productivity requirement, a multi-section heating furnace can be manufactured, the graphite cathode carbon block phosphorus pig iron cast requirements for different series of aluminum electrolysis cells can be met at the same time, and the yield of a product reaches over 99 percent.
Description
Technical field
The present invention relates to the aluminium cell technical field, specifically a kind of graphite cathode carbon block preheating equipment that can back and forth heat continuously is mainly used in the preceding graphite cathode carbon block preheating of phosphorus pig iron casting.
Background technology
The twentieth century end, Norway has has successively researched and developed out two kinds of different cathode carbon pieces equipment technologies with France.Norway adopts charcoal piece and rod iron one heating means; France adopts charcoal piece and rod iron split heating means; Select full graphitized cathode carbon block for use, earlier charcoal piece and rod iron are preheating to uniform temperature, the phosphorus pig iron molten iron with fusing is an inserts again; Be cast to charcoal piece and rod iron gap, cooled and solidified forms an integral body.Up to the present, rely on full graphitization high-quality cathode carbon pieces, Norway and French equipment technology abroad, cathode carbon pieces phosphorus pig iron casting technique is used widely.Because graphite matter charcoal piece thermal conductivity is relatively poor, has only about 1/4th of full graphitization high-quality cathode carbon pieces.Never can effectively solve the oxidation of graphite matter charcoal piece both at home and abroad, can satisfy the setting of graphite matter charcoal deblocking temperature gradient, can realize the preheating equipment that continuity is produced.
Technology contents
The purpose of this invention is to provide a kind of graphite cathode carbon block preheating equipment that can back and forth heat continuously.
The present invention is according to aluminum cell graphite matter cathode carbon pieces physical and chemical index and performance parameter; In conjunction with aluminum electrolyzing cell used graphite cathode carbon block oxidation resistance, temperature field and Stress Field Distribution and Changing Pattern in heating process; Design and produce a cover voluntarily and can effectively solve the oxidation of graphite matter charcoal piece; The setting of graphite matter charcoal deblocking temperature gradient can be satisfied, the preheating equipment that continuity is produced can be realized.
Concrete technical scheme is:
The burner hearth of graphite cathode carbon block preheating equipment is a tunnel-shaped; Stove disposes rollgang outward in the stove; Be provided with even distribution directly over the burner hearth, can independently regulate the resistance heater of power, Frequency Adjustable axial flow blower, high pressure and low pressure nitrogen tracheae, circulating cooling water pipe, smoke exhaust pipe are installed directly over the burner hearth, dispose the quick qi of chong channel ascending adversely device of high-low pressure automatic/hand; Fire door disposes air-lock device, but the burner hearth side disposes the check exhaust apparatus.
Cathode carbon pieces preheating equipment of the present invention combines the design of graphite cathode carbon block thermodynamic property; Stove disposes rollgang outward in the stove; Have the heating function of moving in circles, it is low effectively to solve the graphite cathode carbon block thermal conductivity factor, temperature-rise period thermal stress concentration problem.Adopt the Frequency Adjustable axial flow blower to realize strong convection circulation heat transfer type.Can effectively control the graphite cathode carbon block thermal stress and concentrate the temperature section programming rate.The quick qi of chong channel ascending adversely device of the high-low pressure automatic/hand that is disposed, fire door dispose air-lock device, can guarantee oxygen part control in the stove, have the cathode carbon pieces of preventing heating process oxidative function.Graphite matter assembled block is in heating process; Along with temperature constantly raises, smoke discharge amount progressively strengthens, but at the check exhaust apparatus of burner hearth side configuration; When inner flue gas of the stove reaches finite concentration; Can realize that furnace gas and pressure discharge on request, can effectively solve negative pressure and the malfunctioning problem of control device in the stove, have the automatic discharge function of furnace gas and pressure.
The present invention has filled up the blank of aluminum electrolyzing cell used graphite cathode carbon block phosphorus pig iron casting preheating equipment for aluminium electroloysis provides one to overlap graphite cathode carbon block phosphorus pig iron casting preheating equipment, can realize the production of four groups working in three shifts continuity.According to the production capacity demand, can be made into the multistage heating furnace, can satisfy the casting of the aluminum electrolyzing cell used graphite cathode carbon block phosphorus of the various series pig iron simultaneously, product qualification rate reaching is more than 99%.
Description of drawings
Fig. 1 is a graphite cathode carbon block preheating equipment sketch map of the present invention.
Among the figure, 1-rollgang, 2-resistance heater, 3-frequency modulation axial flow blower, 4-elevated pressure nitrogen tracheae; 5-low pressure nitrogen tracheae, 6-circulating cooling water pipe, 7-smoke exhaust pipe, the quick qi of chong channel ascending adversely device of 8-; 9-air-lock device, but 10-check exhaust apparatus, A-heats a district, and B-heats two districts.
The specific embodiment
As shown in Figure 1; But graphite cathode carbon block preheating equipment of the present invention is made up of rollgang 1, resistance heater 2, frequency modulation axial flow blower 3, elevated pressure nitrogen tracheae 4, low pressure nitrogen tracheae 5, circulating cooling water pipe 6, smoke exhaust pipe 7, quick qi of chong channel ascending adversely device 8, air-lock device 9 check exhaust apparatus 10 etc.; Its burner hearth is a tunnel-shaped, height 1-1.2 rice, width 2.4-3 rice; Length can be made into the multistage heating furnace according to the production capacity demand.Stove disposes rollgang 1 outward in the stove, is made up of 3 systems of roller-way that move in circles in feeding roller table, discharging roller-way, the stove, can realize chain or independent operating.Be provided with the resistance heater 2 that 8 covers evenly distribute, can independently regulate power directly over the burner hearth,, can require the autonomous heating cycle of setting based on the temperature tonsure by the control of PLC control system.2 Frequency Adjustable axial flow blowers 3 are installed directly over the burner hearth, can require autonomous setting shaft flow fan rotating speed according to temperature homogeneity.Stove disposes nitrogen-making device and caisson outward, and nitrogen-making device and caisson are communicated with elevated pressure nitrogen tracheae 4 and low pressure nitrogen tracheae 5, can be according to the furnace atmosphere requirement, and automatic switchover high pressure or low pressure are towards nitrogen.Circulating cooling water pipe 6 is made up of water inlet pipe and outlet pipe, is communicated with the Frequency Adjustable axial flow blower, relies on recirculated cooling water that axial flow blower is freezed.But smoke exhaust pipe 7 is communicated with check exhaust apparatus 10, when inner flue gas of the stove reaches finite concentration, but the unidirectional non-return valve of check exhaust apparatus open automatically, can realize that furnace gas and pressure discharge on request.Stove disposes the quick qi of chong channel ascending adversely device 8 of high-low pressure automatic/hand outward, and the qi of chong channel ascending adversely device is made up of caisson, pressure valve, pipeline fast, and air inlet is arranged on the fire door position, can effectively control fire door position oxygen part concentration.Fire door disposes air-lock device 9, and air-lock device is made up of the high temperature resistant asbestos fibre of ∑ shape, fire door and hydraulic connecting rod, when door opened; Hydraulic connecting rod drives fire door and outwards moves; The high temperature resistant asbestos fibre of ∑ shape flicks, and when fire door was closed, hydraulic connecting rod drove fire door and inwardly moves; The high temperature resistant asbestos fibre of ∑ shape compresses, and reaches good lock gas effect.But check exhaust apparatus 10 is made up of 6 exhaust non-return valves and blast pipe, is evenly arranged on the burner hearth sidewall, can effectively solve negative pressure and the malfunctioning problem of control device in the stove, has the automatic discharge function of furnace gas and pressure.
Claims (1)
1. the graphite cathode carbon block preheating that can back and forth heat is continuously equipped; The burner hearth that it is characterized in that graphite cathode carbon block preheating equipment is a tunnel-shaped; Stove disposes rollgang outward in the stove, is provided with even distribution directly over the burner hearth, can independently regulates the resistance heater of power, and Frequency Adjustable axial flow blower, high pressure and low pressure nitrogen tracheae, circulating cooling water pipe, smoke exhaust pipe are installed directly over the burner hearth; Fire door disposes air-lock device, but the burner hearth side disposes the check exhaust apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104086173A CN102419088A (en) | 2011-12-09 | 2011-12-09 | Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104086173A CN102419088A (en) | 2011-12-09 | 2011-12-09 | Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode |
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| CN102419088A true CN102419088A (en) | 2012-04-18 |
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| CN2011104086173A Pending CN102419088A (en) | 2011-12-09 | 2011-12-09 | Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694958A (en) * | 2015-02-15 | 2015-06-10 | 云南云铝涌鑫铝业有限公司 | Heating device and heating method for heating cathode carbon block for aluminum pre-baking electrolytic bath |
| CN104818497A (en) * | 2015-04-17 | 2015-08-05 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode carbon block preheating device and application method thereof |
| CN105463508A (en) * | 2015-11-23 | 2016-04-06 | 中国铝业股份有限公司 | Cathode carbon block set preheating device for performing heating through fuel gas |
| CN106400054A (en) * | 2016-06-24 | 2017-02-15 | 沈阳汇丰机械有限公司 | Cathode assembling preheating station |
| CN108716857A (en) * | 2018-07-26 | 2018-10-30 | 青岛海源实业有限公司 | A kind of layering burner hearth Liftable type multilayer resistance-heated furnace |
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| JP2002156188A (en) * | 2000-11-17 | 2002-05-31 | Daido Steel Co Ltd | Roller hearth type atmospheric furnace |
| CN2627437Y (en) * | 2003-04-07 | 2004-07-21 | 张贵洲 | Continuous push-plate kiln with silicon-molybdenum rod and hydrogen-nitrogen protection |
| CN101118114A (en) * | 2007-09-14 | 2008-02-06 | 湖北三新磷酸有限公司 | Novel industrialization three-way type roll table kiln for directly preparing phosphoric acid with phosphate ore |
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2011
- 2011-12-09 CN CN2011104086173A patent/CN102419088A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| JP2002156188A (en) * | 2000-11-17 | 2002-05-31 | Daido Steel Co Ltd | Roller hearth type atmospheric furnace |
| CN2627437Y (en) * | 2003-04-07 | 2004-07-21 | 张贵洲 | Continuous push-plate kiln with silicon-molybdenum rod and hydrogen-nitrogen protection |
| CN101118114A (en) * | 2007-09-14 | 2008-02-06 | 湖北三新磷酸有限公司 | Novel industrialization three-way type roll table kiln for directly preparing phosphoric acid with phosphate ore |
Non-Patent Citations (1)
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| 张华，杨继淳: "氮基保护微分辊底式炉热处理生产线", 《轴承》, vol. 46, no. 12, 31 December 2004 (2004-12-31), pages 14 - 15 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694958A (en) * | 2015-02-15 | 2015-06-10 | 云南云铝涌鑫铝业有限公司 | Heating device and heating method for heating cathode carbon block for aluminum pre-baking electrolytic bath |
| CN104818497A (en) * | 2015-04-17 | 2015-08-05 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode carbon block preheating device and application method thereof |
| CN104818497B (en) * | 2015-04-17 | 2017-05-10 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode carbon block preheating device and application method thereof |
| CN105463508A (en) * | 2015-11-23 | 2016-04-06 | 中国铝业股份有限公司 | Cathode carbon block set preheating device for performing heating through fuel gas |
| CN105463508B (en) * | 2015-11-23 | 2017-12-12 | 中国铝业股份有限公司 | A kind of carbon cathode blocks preheating device of gas heating |
| CN106400054A (en) * | 2016-06-24 | 2017-02-15 | 沈阳汇丰机械有限公司 | Cathode assembling preheating station |
| CN108716857A (en) * | 2018-07-26 | 2018-10-30 | 青岛海源实业有限公司 | A kind of layering burner hearth Liftable type multilayer resistance-heated furnace |
| CN108716857B (en) * | 2018-07-26 | 2024-04-19 | 青岛海源碳烯铝合金新材料科技有限公司 | Layered hearth lifting type multilayer resistance heating furnace |
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Application publication date: 20120418 |