CN202141340U - Liquid slag discharge device of high-temperature silicon steel heating furnace - Google Patents
Liquid slag discharge device of high-temperature silicon steel heating furnace Download PDFInfo
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- CN202141340U CN202141340U CN201120216405U CN201120216405U CN202141340U CN 202141340 U CN202141340 U CN 202141340U CN 201120216405 U CN201120216405 U CN 201120216405U CN 201120216405 U CN201120216405 U CN 201120216405U CN 202141340 U CN202141340 U CN 202141340U
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- slag
- slag notch
- slag discharge
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Abstract
Provided are a liquid slag discharge device and method of a high-temperature silicon steel heating furnace, which belong to the technical field of industrial furnaces. The liquid slag discharge device comprises a slope furnace bottom, a slag discharge port burner nozzle, a slag discharge port channel, a slag discharge port furnace door, a pelletization device and a slag flushing device. The slope furnace bottom is in an upper triangle slope structure and is composed of a furnace bottom steel structure and fire resistant materials on the furnace steel structure. The slag discharge port burner nozzle is a short-flame high flame temperature burner nozzle. The slag discharge port channel is a 230 by 300 rectangular slope channel structure, and the gradient ranges from 10 degrees to 20 degrees. The slag discharge port furnace door is in a structure that a heat resistant steel plate is lined with the fire resistant materials. The pelletization device is in a semi-cylindrical double-layer cylinder body structure, the outer wall of the pelletization device is connected with pelletization impure circulation water, and the inner wall of the pelletization device is provided with a plurality of spouts. The slag flushing device is in a U-shaped groove structure. The head-tail gradient of the groove body ranges from 3% to 6%, the slag flushing device is connected with slag flushing water on the outside to flush pelletization slag produced by pelletization of the pelletization device into a slag discharge ditch under a discharge roller bed so as to achieve uniform recycling of steel slag of the whole factory. The liquid slag discharge device has the advantages of achieving heating of the silicon steel, reducing furnace-stopping maintenance, prolonging production time, and improving the production utilization rate of a high-temperature heating furnace.
Description
Technical field
The utility model belongs to the industrial furnace technology field, provides a kind of high temperature silicon steel heater liquid deslagging device especially, and the raising high temperature silicon steel heater cycle adds heat, and a large amount of energy savings and service material reduce labor strength.
Background technology
The traditional heating stove is not produced orientation silicon steel, and its heating furnace high-temperature section furnace temperature generally has only about 1300 ℃, and the iron scale that generates in the stove is less, does slag when therefore can wait stove to repair, general 6～September clear primary slag.And the heating process of directional silicon steel slab wants seeking time length, heating furnace high-temperature section furnace temperature up to 1380～1400 ℃; Therefore the iron scale of steel slab surface is fused into liquid steel slag in stove; Produce a period of time when slag in the stove reach a certain amount of after; Need blowing out to carry out manual work and go into the stove scarfing cinder, generally call " cycle adds heat " to the slab total amount of stove heating during the twice blowing out scarfing cinder in front and back, weigh the level of production of high temperature silicon steel heater with this.Data shows according to investigations, does not have the high temperature silicon steel heater of liquid deslagging device, the liquid steel slag that produces when dischargeable capacity can only be held the heating of 5000t directional silicon steel slab in the stove, and promptly to add heat be 5000t the cycle.This has seriously restricted the raising of hot rolling mill orientation silicon steel output; And adding heat, the cycle with high temperature silicon steel heater of liquid slag-tapping function can reach 10000～12000t ability; Significant to heating measurer the annual period of improving heating furnace; Reduce the workload that cooling, stove are repaiied and heated up simultaneously, reduced energy resource consumption.
Summary of the invention:
The purpose of the utility model is to provide a kind of high temperature silicon steel heater liquid deslagging device; Not doing under the big change prerequisite of original body of heater and other structure; Original heating furnace side wall and bottom construction are carried out innovative design; Neither can influence the heating quality of slab, can carry out online liquid state again and slag tap, the cycle that has increased the high temperature silicon steel heater adds heat.
The utility model comprises slope furnace bottom 1, slag notch burner 2, slag notch passage 3, slag notch fire door 4, granulating device 5, slag flushing device 6; Slag notch burner 2 is installed in the top of slag notch passage 3; Slag notch fire door 4 is installed in the slag notch channel end; Granular device 5 is installed under the slag notch, slag flushing device 6 be installed in granulating device 5 under, form three-dimensional liquid slag-tapping system; Slope furnace bottom 1 is last triangle ramp structure, is made by furnace bottom steel construction and the refractory material on it, and slag notch burner 2 is short flame, high flame temperature burner, and slag notch passage 3 is 230 * 300 rectangular slope channel designs, and its gradient is between 10～20 °; Slag notch fire door 4 is a heat-resisting steel sheet and plate inner lining refractory structure, adopts hinged mounting means; Granulating device 5 is semicircular cylinder double-layer barrel structures, and outer wall connects the granulation turbid circulating water, and inwall is provided with several spouts; Slag flushing device 6 is " U " type bathtub construction, cell body end to end the gradient 3%～6%, external flushing cinder water, the grain slag that granulating device 5 granulations are produced is flushed to the discharging slag runner the discharging roller-way under, realizes the unified recovery of full factory slag.
The gradient of the said slope of the utility model furnace bottom 1 is between 4 °～10 °; The anti-slag of working lining ramming is moldable; And smear the anti-slag pours of 50mm chromium magnesium at its working lining, and improve the service life of slope bottom refractory, also be convenient to the repairing of anti-material after the blowing out scarfing cinder.
The said cinder notch burner 2 of the utility model is short flame, high flame temperature burner, employing>=2600Kcal/Nm
3The coal gas of calorific value acts as a fuel, and combustion air is preheating to more than 550 ℃, guarantees that the slag notch channel temperature can reach more than 1400 ℃, thereby makes the iron scale slag fluidity good, and its burner block adopts anti-slag property and durothermic chromium magnesium pours.
The said liquid slag notch 3 of the utility model is in order to guarantee iron scale slag good fluidity; Its gradient is between 10 °～20 °; The passage refractory material selects for use chromium and magnesium brick to build by laying bricks or stones, and chromium and magnesium brick not only has high temperature tolerance and anti-slag corrosion property, also is convenient to simultaneously safeguard change.
The said slag notch fire door 4 of the utility model adopts the anti-slag pours of heat-resisting steel sheet and plate liner chromium magnesium, adopts hinged mounting means, guarantees that high temperature silicon steel heater process furnace gas leaks or cinder notch is inhaled cold wind, guarantees the operating temperature of slag notch passage 3.
Granulating device 5 outer walls according to the invention connect the granulation turbid circulating water, and inwall is provided with some water jets, from slag notch passage 3 flow out slags dropping and, spraying water through the process of granulating device, granulation, cooling, accomplish whole molten steel slag granulation.
The graininess solid slag that said granulating device 5 granulations of the utility model produce drops to slag flushing device 6, and slag flushing device 6 external flushing cinder water are flushed to the slag runner of production line with granulation attitude slag, unify to reclaim.
The utility model had both satisfied the heating of silicon steel not influencing under the situation that steel billet heats in stove, reduced the shutdown maintenance number of times again, had increased the production time, and the cycle of improving the high temperature silicon steel heater adds heat.
The liquid deslagging device structural shape of simultaneously this high temperature silicon steel heater is simple, operation and maintenance is convenient, scarfing cinder easily, reduce equipment investment, being well suited for being applied in high-temperature heater has oxidizing slag to need the liquid occasion that slag tap.
Description of drawings
Fig. 1 is the liquid deslagging device front view of the silicon steel heating furnace of the utility model, wherein, and slag notch burner 2, slag notch fire door 4, granulating device 5, slag flushing device 6;
Fig. 2 is the liquid deslagging device A-A of the silicon steel heating furnace profile of the utility model, wherein, and slope furnace bottom 1, slag notch burner 2, slag notch passage 3, slag notch fire door 4, granulating device 5, slag flushing device 6;
Fig. 3 is the liquid deslagging device B-B of the silicon steel heating furnace profile of the utility model, wherein, and slag notch passage 3, granulating device 5, slag flushing device 6;
Fig. 4 is the silicon steel heating furnace type of furnace structure chart of the utility model, wherein, and heat-recovery section 7, preheating section 8, bringing-up section 9, second bringing-up section 10 and soaking zone 11.
The specific embodiment:
The utility model comprises slope furnace bottom 1, slag notch burner 2, slag notch passage 3, slag notch fire door 4, granulating device 5, slag flushing device 6; Slag notch burner 2 is installed in the top of slag notch passage 3; Slag notch fire door 4 is installed in the slag notch channel end; Granular device 5 is installed under the slag notch, slag flushing device 6 be installed in granulating device 5 under, form three-dimensional liquid slag-tapping system; Slope furnace bottom 1 is last triangle ramp structure, is made by furnace bottom steel construction and the refractory material on it, and slag notch burner 2 is short flame, high flame temperature burner, and slag notch passage 3 is 230 * 300 rectangular slope channel designs, and its gradient is between 10～20 °; Slag notch fire door 4 is a heat-resisting steel sheet and plate inner lining refractory structure, adopts hinged mounting means; Granulating device 5 is semicircular cylinder double-layer barrel structures, and outer wall connects the granulation turbid circulating water, and inwall is provided with several spouts; Slag flushing device 6 is " U " type bathtub construction, cell body end to end the gradient 3%～6%, external flushing cinder water, the grain slag that granulating device 5 granulations are produced is flushed to the discharging slag runner the discharging roller-way under, realizes the unified recovery of full factory slag.
For large-scale multi-zone reheating furnace, can be divided into heat-recovery section 7, preheating section 8, first bringing-up section 9, second bringing-up section 10 and soaking zone 11 like Fig. 4 from the furnace temperature system.Its heat-recovery section of high temperature silicon steel heater, preheating section, the highest furnace temperature of the first bringing-up section furnace temperature are at 1330 ℃, and steel billet is relatively low in these three section furnace temperature, and billet oxidization burning loss is little; The stove both sides need not be provided with liquid deslagging device, and in second bringing-up section and soaking zone furnace temperature up to 1380～1400 ℃, steel billet is in these two high temperature section heating; Billet surface produces a large amount of liquid molten slags, and the oxidization burning loss rate drops to furnace bottom up to 4% and produce liquid steel slag thereupon; Along with the accumulation of liquid steel slag, reduce thereupon in the lower hearth space, and heating furnace operating mode condition is more and more abominable; Cause heating furnace heating 5000t left-right orientation silicon steel steel billet, just need the blowing out scarfing cinder.Therefore; Need liquid deslagging device be set corresponding side wall bottom at water beam column middle part, different according to the length of heating furnace high-temperature section, the heating furnace both sides respectively are provided with 4～6 slag notches; Flow to the slag that produces in the steel billet heating process outside the stove in real time through liquid deslagging device; Reduce the slag amount of piling up in the stove, the raising silicon steel heating furnace cycle adds heat to 10000～12000t, has huge economic benefit and production capacity benefit.
Like Fig. 1, Fig. 2, shown in Figure 3, steel billet heats with 1380～1400 ℃ of furnace temperature in second bringing-up section and soaking zone, and a large amount of liquid steel slag that steel billet produces in heating process in the stove drops on the slope furnace bottom 1; Furnace bottom 1 upper surface flows to slag notch 3 to molten steel slag along the slope, in the slag notch channel roof cinder notch burner 2 is set, cinder notch burner 2 burning high heating value gases; Guarantee slag notch passage～1400 ℃ of working temperatures; Guarantee the meltbility of liquid steel slag,, strengthen the gradient of slag notch channel bottom in order to increase the flowability of liquid steel slag; Between 10 °～20 ° of the gradients; Simultaneously set out cinder notch fire door 4 in the slag notch end, slag notch fire door 4 prevents leaking of furnace high-temperature flue gas and the outer cold air of stove gets in the stove, covers the radiant heat of slag notch passage; Improve the ascent of slag notch passage, keep the working temperature of slag notch passage～1400 ℃.Granulating device 5 is a double-decker, and its outer wall connects granulation water, and inwall is provided with several spouts, and slag is dropping and through the process of granulating device, whole molten steel slag granulation is accomplished in the granulation of spraying water, cooling when flowing out from slag notch passage 3.Grain slag after granulation and water flow in the cinder-flushing groove 6 of granulating device 5 bottoms, and the external flushing cinder water in cinder-flushing groove 6 ends is flushed to the discharging slag runner of discharging roller-way below to grain slag, realize that full factory slag is unified to recycle, and turn waste into wealth.
Claims (4)
1. the liquid deslagging device of high temperature silicon steel heater is characterized in that, comprises slope furnace bottom (1), slag notch burner (2), slag notch passage (3), slag notch fire door (4), granulating device (5), slag flushing device (6); Slope furnace bottom down-hill end sets out cinder notch passage (3); Slag notch burner (2) is installed in the top of slag notch passage (3); Slag notch fire door (4) is installed in the slag notch channel end, and granular device (5) is installed under the slag notch, slag flushing device (6) be installed in granulating device (5) under; Slope furnace bottom (1) is last triangle ramp structure; Make by furnace bottom steel construction and the refractory material on it; Slag notch burner (2) is short flame, high flame temperature burner, and slag notch passage (3) is 230 * 300 rectangular slope channel designs, and its gradient is between 10～20 °; Slag notch fire door (4) is a heat-resisting steel sheet and plate inner lining refractory structure, adopts hinged mounting means; Granulating device (5) is a semicircular cylinder double-layer barrel structure, and outer wall connects the granulation turbid circulating water, and inwall is provided with several spouts; Slag flushing device (6) is " U " type bathtub construction, cell body end to end the gradient 3%～6%, external flushing cinder water.
2. the liquid deslagging device of high temperature silicon steel heater according to claim 1 is characterized in that the gradient of said slope furnace bottom (1) is between 4 °～10 °, and the anti-slag of working lining ramming is moldable, and smears the anti-slag pours of 50mm chromium magnesium at its working lining.
3. the liquid deslagging device of high temperature silicon steel heater according to claim 1 is characterized in that said cinder notch burner (2) employing>=2600Kcal/Nm
3The coal gas of calorific value acts as a fuel, and its burner block adopts anti-slag property and durothermic chromium magnesium pours.
4. the liquid deslagging device of high temperature silicon steel heater according to claim 1 is characterized in that said slag notch passage (3) passage refractory material selects for use chromium and magnesium brick to build by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120216405U CN202141340U (en) | 2011-06-24 | 2011-06-24 | Liquid slag discharge device of high-temperature silicon steel heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120216405U CN202141340U (en) | 2011-06-24 | 2011-06-24 | Liquid slag discharge device of high-temperature silicon steel heating furnace |
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| CN202141340U true CN202141340U (en) | 2012-02-08 |
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| CN201120216405U Expired - Lifetime CN202141340U (en) | 2011-06-24 | 2011-06-24 | Liquid slag discharge device of high-temperature silicon steel heating furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017516A (en) * | 2013-01-06 | 2013-04-03 | 莱芜钢铁集团有限公司 | Walking beam reheating furnace |
| CN103484650A (en) * | 2013-09-24 | 2014-01-01 | 武汉钢铁(集团)公司 | On-line slagging method and device of continuous heating furnace |
| CN104344722A (en) * | 2014-10-10 | 2015-02-11 | 武汉钢铁(集团)公司 | Method for preventing slag accumulation for soil fence of high-temperature heating furnace |
| CN111664710A (en) * | 2020-06-19 | 2020-09-15 | 安徽工业大学 | Metal oxidation waste online cleaning system and control method thereof |
-
2011
- 2011-06-24 CN CN201120216405U patent/CN202141340U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017516A (en) * | 2013-01-06 | 2013-04-03 | 莱芜钢铁集团有限公司 | Walking beam reheating furnace |
| CN103017516B (en) * | 2013-01-06 | 2015-04-15 | 莱芜钢铁集团有限公司 | Walking beam reheating furnace |
| CN103484650A (en) * | 2013-09-24 | 2014-01-01 | 武汉钢铁(集团)公司 | On-line slagging method and device of continuous heating furnace |
| CN104344722A (en) * | 2014-10-10 | 2015-02-11 | 武汉钢铁(集团)公司 | Method for preventing slag accumulation for soil fence of high-temperature heating furnace |
| CN104344722B (en) * | 2014-10-10 | 2016-06-29 | 武汉钢铁(集团)公司 | High-temperature heater fortifield village preventing deposit method |
| CN111664710A (en) * | 2020-06-19 | 2020-09-15 | 安徽工业大学 | Metal oxidation waste online cleaning system and control method thereof |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |