CN201857420U - Device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum - Google Patents
Device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum Download PDFInfo
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- CN201857420U CN201857420U CN2010205771224U CN201020577122U CN201857420U CN 201857420 U CN201857420 U CN 201857420U CN 2010205771224 U CN2010205771224 U CN 2010205771224U CN 201020577122 U CN201020577122 U CN 201020577122U CN 201857420 U CN201857420 U CN 201857420U
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Abstract
The utility model relates to the technical field of hot-dip galvanizing, in particular to a device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum. The adopted technical scheme is as follows: the side of a galvanized zinc pot is additionally provided with a low-temperature standing zinc pot which drives zinc-aluminum melt to be led out of the galvanized zinc pot through a pipeline, so as to enable liquid zinc to flow into the low-temperature standing zinc pot, and deironing process for the liquid zinc is conducted in the low-temperature standing zinc pot. The low-temperature standing zinc pot is heated by adopting an electric resistance belt, and temperature difference between the low-temperature standing zinc pot and the galvanized zinc pot is reasonably controlled. By utilizing different solubility of iron at different temperatures and density difference between iron-containing zinc slag and the zinc-aluminum melt, iron in the zinc-aluminum melt is separated out in the low-temperature standing zinc pot by standing and cooling to produce the iron-containing zinc slag which is precipitated to the bottom of the zinc-aluminum melt; and the purified zinc-aluminum melt after standing flows back to the galvanized zinc pot through the pipeline connected with the galvanized zinc pot, so as to complete the deironing process for the zinc-aluminum melt. The device can be used inside or outside a hot-dip galvanized aluminum wire, but iron content in the liquid zinc in the galvanized zinc pot is significantly reduced, the quality of coating is improved, and zinc-aluminum loss is reduced.
Description
Technical field
The utility model relates to the device in a kind of continuous zinc coating field, specifically is the device that the cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium.
Background technology
Galvanizing is a kind of comparatively effectively and easily steel anti-corrosive method, and galvanizing is a kind of comparatively effectively and easily steel anti-corrosive method, and its coating has good sacrifice preservative activity; Hot dip alumin(i)um coating densification, durability period are long.And zinc aluminum alloy coating is used widely because of its performance that has had galvanic protection characteristic, the coating of the durable protection feature of aluminium and zinc concurrently will exceed several times than superior performance, the antiseptic property of single-element coating than pure zinc coating.Because zinc-plated aluminium sheet, have excellent comprehensive performance and beautiful appearance such as the Galvalume Coated Steel, the trend of alclad sheet and part steel plate galvanized has abroad appearred replacing with this coated sheet, formed one zinc aluminum alloy coating heat, its product is mainly used in building industry, automotive industry, household electrical appliance and agricultural etc.
At present, a serious problem on the hot dip process production line is exactly the cadmia problem, because zinc aluminum alloy coating aluminium content is higher, compare with the zinc pond of hot pure zinc plating, the composition in zinc pond changes a lot, especially when elements such as adding silicon in the zinc-aluminium pond, will make facies relationship wherein become more complicated.Cadmia in zinc-aluminium zinc pond is mutually for containing the FeAl of zinc
L3With the Fe-Al-Si intermetallic compound.The density in density zinc-aluminium pond, zinc pond of comparing hot pure zinc plating is little, and 55%Al-Zn zinc-aluminium pond approximately is 1/2 of a hot pure zinc plating.Therefore, will be easier to form suspension slag and end slag in the zinc-aluminium pond, the origin cause of formation of cadmia and influence factor are wanted much complicated in the specific heat pure zinc plating zinc pond.Typical zinc-plated aluminium Galvalume production line much all exists puzzlement people's cadmia problem at present, for example Australian Bluescope Steel has three Galvalume production lines to have serious cadmia problem, and equally also there is the cadmia problem in domestic many Galvalume production line.
Iron is the arch-criminal who causes cadmia, source for iron in the zinc pond, have research to think that they may come from the iron filings and the hardware facility that is submerged in the zinc pond of surface of steel plate, yet a large amount of plant produced experience, breadboard experiment and theoretical analysis show that all the dissolving of iron is the main source of iron in the zinc pond in the steel plate.Steel plate has just entered the moment in zinc pond, and steel plate and zinc pond are in the metastable equilibrium state, and this moment, steel plate and zinc pond iron level at the interface will be higher than the solubleness of iron in the zinc pond far away.Therefore, iron at the interface generates the part of alloy layer except participating in reaction, the remaining zinc pond that all entered.The generation of cadmia is because the iron level in the zinc pond has surpassed its saturation solubility in the zinc pond.Reduce the production of zinc pond cadmia, the content of iron is crucial in the control zinc pond, if can reduce the content of iron in zinc pond, the cadmia generation in zinc pond will be reduced greatly, to improving zinc-plated aluminium quality product, enlarging the product application scope and have very important meaning by certain device.
Summary of the invention
The purpose of this utility model provides a kind of deironing apparatus in the continuous zinc coating production zinc-aluminium molten bath that is used for, the zinc-aluminium melt is imported in this device, utilize the different solubility of iron under the differing temps and the density difference between iron content cadmia and the zinc-aluminium melt, making in the zinc-aluminium melt iron leave standstill cooling in stand at low temperature zinc pot separates out, generate the iron content cadmia and be settled down to zinc-aluminium melt bottom, can reduce to continuous and effective the solubleness of iron in the zinc pond, thereby reduce the cadmia growing amount in the zinc pond, and then improve production efficiency and product quality, reduce the loss of aluminium zinc, reduce production costs.
For reaching above purpose, a kind of deironing apparatus in the continuous zinc coating production zinc-aluminium molten bath that is used for described in the utility model comprises:
One stand at low temperature zinc pot is arranged on the continuous zinc coating zinc pot outside, and level attitude exceeds zinc-plated zinc pot distance and is H.
One heating unit, heating unit are used for stand at low temperature zinc pot heat tracing.
Preferably, around described stand at low temperature zinc pot is the same with zinc-plated zinc pot and bottom inside all adopt fire-resistant corrosion-resistant material, outer use steel plate layer.
Preferably, stand at low temperature zinc pot and zinc-plated zinc pot difference of altitude are 30～50cm
Preferably, during this device used, stand at low temperature zinc pot zinc-aluminium melt liquid level was higher than zinc-plated zinc pot zinc melt liquid aluminum.
Preferably, heating unit adopts around the resistive band type of heating, reduces the stirring to zinc-aluminium melt in the stand at low temperature zinc pot.
Preferably, the zinc melt temperature is lower than 15～30 ℃ of zinc-plated zinc pot temperatures in the control stand at low temperature zinc pot.
One derives pipeline, derives zinc-plated zinc pot of pipe connection and stand at low temperature zinc pot, between zinc-plated zinc pot bottom and stand at low temperature zinc pot bottom, apart from stand at low temperature zinc pot bottom 1/3 position.
One reflux line, reflux line connects stand at low temperature zinc pot and zinc-plated zinc pot, between zinc-plated zinc pot top and stand at low temperature zinc pot top.
One zinc-aluminium melt drive unit, being arranged on derives on the pipeline, is used for driving zinc-aluminium liquid from zinc-plated zinc pot to stand at low temperature zinc pot.
Reflux zinc-plated zinc pot of described reflux line zinc-aluminium melt adopts natural back flow.
Preferably, described derivation pipeline and reflux line all adopt fire-resistant anti-corrosion graphite pipeline.
Preferably, derive pipeline and reflux line and adopt circle or square structure, cross-sectional area 3～15cm
2
Preferably, described derivation pipeline connects zinc-plated zinc pot inlet water mean place and is higher than connection stand at low temperature zinc pot outlet level attitude.
Preferably, described reflux line connects stand at low temperature zinc pot inlet water mean place and is higher than the zinc-plated zinc pot outlet of connection level attitude.
Preferably, zinc-aluminium liquid drive unit adopts the adjustable control setting, can regulate and control the zinc-aluminium melt flow in the derivation pipeline that drives.
Preferably, leading to the interior zinc melt flow rate of stand at low temperature zinc pot derivation pipeline is 100～300kg/min.
The device of cooling deironing is left standstill in extracorporeal circulation of the present utility model, is the method that the continuous hot-dipping zinc-aluminium provides a kind of deironing to subtract slag, and iron removal is external the finishing of continuous zinc coating zinc pot.Under motivating force effects such as electromagnetic drive, make the zinc-aluminium melt-flow enter stand at low temperature zinc pot through deriving pipeline, during slowly rising, finishes the zinc-aluminium melt process of cooling deironing in stand at low temperature zinc pot, the iron of separating out generates the iron content cadmia and is settled down to zinc-aluminium melt bottom and removes, and flow back to zinc-plated zinc pot naturally by the reflux line that links to each other with zinc-plated zinc pot through the zinc-aluminium melt of stand at low temperature removal iron, reduce zinc-aluminium melt dissolved ferric iron amount in the zinc-plated zinc pot, fundamentally reducing the cadmia growing amount in zinc-aluminium pond, provide clean zinc pool environment for producing high-quality hot dip process steel plate, reduce cadmia defective the hot-dip aluminum zinc steel plate from the source, stablize the quality product of hot-dip galvanized steel sheet, for being provided, high hot dip process steel plate quality gives security, enlarge hot dip process steel sheet product range of application, reduce the loss of zinc-aluminium in the production process, can bring considerable social benefit and economic benefit.
Description of drawings
Shuo Ming accompanying drawing is used for the present invention is further explained herein, constitutes the application's a part, and indicative icon of the present invention is used to explain the present invention, does not constitute improper qualification of the present invention, and protection scope of the present invention is not limited to following synoptic diagram.
Fig. 1 carries out steel plate galvanizing process synoptic diagram for traditional galvanizing pot.
Fig. 2 leaves standstill the device synoptic diagram of cooling deironing for extracorporeal circulation in the utility model continuous hot-dipping zinc-aluminium.
Fig. 3 leaves standstill the device delivery line place sectional top view of cooling deironing for extracorporeal circulation in the utility model continuous hot-dipping zinc-aluminium.
Fig. 4 leaves standstill cooling deironing synoptic diagram for the utility model extracorporeal circulation.
Wherein: [1] zinc-plated zinc pot, [2] zinc-plated zinc pot liquid level, [3] reflux line, [4] stand at low temperature zinc pot liquid level, [5] stand at low temperature zinc pot, [6] heating resistor band, [7] iron content cadmia deposition, [8] iron content cadmia, [9] zinc-aluminium melt, [10] drive unit, [11] derive pipeline, [12] band steel, [13] stablize roller, [14] sinking roller.
Embodiment
Specifically introducing present embodiment below in conjunction with accompanying drawing elaborates: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, has provided detailed embodiment and process, but protection scope of the present invention is not limited to following embodiment.
In conjunction with Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, in the continuous hot-dipping zinc-aluminium of the present invention extracorporeal circulation leave standstill the cooling deironing method comprise zinc-plated zinc pot 1 and stand at low temperature zinc pot 5.Stand at low temperature zinc pot 5 placement locations exceed zinc-plated zinc pot 1 and highly are H, and difference of altitude is 30～50cm.Steel plate galvanizing process is finished at zinc-plated zinc pot, and stand at low temperature zinc pot is used for leaving standstill the cooling deironing.Link to each other by derivation pipeline 11, reflux line 3 between zinc-plated zinc pot 1 and the stand at low temperature zinc pot 5, device has drive unit 10 in order to the zinc-aluminium melt is exported to stand at low temperature zinc pot from zinc-plated zinc pot on derivation pipeline 11.
Described zinc-plated zinc pot 1 adopts the electromagnetic induction heating mode to heat, stand at low temperature zinc pot 5 adopts 6 heating of heating resistor bands that it is carried out heat tracing, and the purpose that adopts 6 heating of heating resistor band is to prevent that type of heating such as electromagnetic induction from producing the sedimentation of separating out with the iron content cadmia of stirring and influence iron to the zinc-aluminium melt and accumulating.
The zinc-aluminium melt is under the driving of drive unit 10, flow into stand at low temperature zinc aluminum pot 5 bottoms via deriving pipeline 11, can derive zinc-aluminium melt flow in the pipeline 11 by regulating the motivating force size of drive unit 10, adjusting, zinc-aluminium melt 9 slowly rises in stand at low temperature zinc pot 5.Temperature control by heating resistor band 6, make stand at low temperature zinc pot 5 interior zinc melt temperatures be lower than 15～30 ℃ of zinc-plated zinc pot 1 temperature, because the reduction of temperature makes the solubleness of iron in zinc-aluminium melt 9 reduce, separate out thereby make in the zinc-aluminium melt 9 of iron from rise, generate iron content cadmia 8 and grow up and progressively be settled down to stand at low temperature zinc pot 5 bottoms and form iron content cadmia deposition 7.Zinc-aluminium melt 9 by the cooling deironing after be back to zinc-plated zinc pot 1 by reflux line 3.Zinc-aluminium is carried out circulation deferrization, and about 20～40% Fe has formed iron containing compounds and has separated out in the zinc melt.
From above-mentioned embodiment as seen, the device utilization that the cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium of the utility model is left standstill cooling and is analysed the method for iron, effectively remove the iron in the zinc-aluminium melt, reduce the growing amount of cadmia by the iron level in the reduction zinc-aluminium melt, provide clean zinc pool environment for producing high-quality hot dip process steel plate, fundamentally avoid cadmia generation of defects in the hot-dip aluminum zinc steel plate, stablize the quality product of hot-dip galvanized steel sheet, for being provided, high hot dip process steel plate quality gives security, enlarge the product application scope, the loss of zinc-aluminium be can reduce simultaneously, considerable social benefit and economic benefit brought.
Claims (7)
1. the device of cooling deironing is left standstill in extracorporeal circulation in the continuous hot-dipping zinc-aluminium, comprise zinc-plated zinc pot (1), it is characterized in that: be provided with a stand at low temperature zinc pot (5) on zinc-plated zinc pot (1) next door, being provided with between zinc-plated zinc pot (1) bottom and stand at low temperature zinc pot (5) bottom derives pipeline (11), on derivation pipeline (11), be provided with drive unit (10) in order to zinc-aluminium melt (9) is exported to stand at low temperature zinc pot (5) from zinc-plated zinc pot (1), be provided with reflux line (3) between zinc-plated zinc pot (1) top and stand at low temperature zinc pot (5) top, be used for the zinc-aluminium melt (9) after the cooling deironing is back to zinc-plated zinc pot (1).
2. the device of cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium as claimed in claim 1, it is characterized in that: the position of stand at low temperature zinc pot (5) is higher than the position of zinc-plated zinc pot (1), height difference H is 30～50cm, and the zinc-aluminium melt liquid level in the stand at low temperature zinc pot (5) is higher than the zinc-aluminium melt liquid level in the zinc-plated zinc pot (1).
3. the device of cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium as claimed in claim 1, it is characterized in that: described zinc-plated zinc pot (1) adopts the electromagnetic induction heating mode to heat, described stand at low temperature zinc pot (5) adopts around resistive band (6) heating carrying out heat tracing, reduces zinc-aluminium melt (9) is produced the sedimentation of separating out with the iron content cadmia of stirring and influence iron to accumulate.
4. the device of cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium as claimed in claim 1, it is characterized in that: described derivation pipeline (11) adopts fire-resistant anti-corrosion graphite pipeline, derive pipeline (11) and adopt circle or square structure, cross-section of pipeline is long-pending to be 3～15cm
2, the inlet water mean place of deriving pipeline (10) the zinc-plated zinc pot of connection (1) is higher than and connects stand at low temperature zinc pot (5) outlet level position, and difference of altitude can flow into stand at low temperature zinc pot (5) smoothly with zinc-aluminium melt (9) and be as the criterion.
5. the device of cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium as claimed in claim 1, it is characterized in that: described reflux line (3) adopts fire-resistant anti-corrosion graphite pipeline, reflux line (3) adopts circle or square structure, and cross-section of pipeline is long-pending to be 3～15cm
2The inlet water mean place that reflux line (3) connects stand at low temperature zinc pot (5) is higher than the outlet level attitude that connects zinc-plated zinc pot (1), and difference of altitude can flow into zinc-plated zinc pot (1) smoothly with zinc-aluminium melt (9) and be as the criterion.
6. the device of cooling deironing is left standstill in extracorporeal circulation in a kind of continuous hot-dipping zinc-aluminium as claimed in claim 1, it is characterized in that: around stand at low temperature zinc pot (5) and the zinc-plated zinc pot (1) and bottom inside all adopt fire-resistant corrosion-resistant material, outer use steel plate layer.
7. leave standstill the device of cooling deironing as extracorporeal circulation in claim 1 or the 4 described a kind of continuous hot-dipping zinc-aluminiums, it is characterized in that: described derivation pipeline (11) is apart from 1/3 position, stand at low temperature zinc pot (5) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205771224U CN201857420U (en) | 2010-10-26 | 2010-10-26 | Device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205771224U CN201857420U (en) | 2010-10-26 | 2010-10-26 | Device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum |
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| Publication Number | Publication Date |
|---|---|
| CN201857420U true CN201857420U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205771224U Expired - Fee Related CN201857420U (en) | 2010-10-26 | 2010-10-26 | Device for deironing by standing and cooling through extracorporeal circulation in continuous hot-dip galvanized aluminum |
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| CN (1) | CN201857420U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967616A (en) * | 2010-10-26 | 2011-02-09 | 常州大学 | Extracorporeal circulation standing cooling iron removal device for continuous hot dip galvanized aluminum |
| CN106191729A (en) * | 2016-08-15 | 2016-12-07 | 常州大学 | A kind of device reducing the formation of continuous hot-dipping galvanizing zinc of zinc pot slag |
| CN106191732A (en) * | 2016-08-15 | 2016-12-07 | 常州大学 | A kind of method reducing continuous hot-dipping galvanizing zinc pot key position cadmia |
-
2010
- 2010-10-26 CN CN2010205771224U patent/CN201857420U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967616A (en) * | 2010-10-26 | 2011-02-09 | 常州大学 | Extracorporeal circulation standing cooling iron removal device for continuous hot dip galvanized aluminum |
| CN101967616B (en) * | 2010-10-26 | 2013-10-23 | 常州大学 | Extracorporeal circulation standing cooling iron removal device for continuous hot dip galvanized aluminum |
| CN106191729A (en) * | 2016-08-15 | 2016-12-07 | 常州大学 | A kind of device reducing the formation of continuous hot-dipping galvanizing zinc of zinc pot slag |
| CN106191732A (en) * | 2016-08-15 | 2016-12-07 | 常州大学 | A kind of method reducing continuous hot-dipping galvanizing zinc pot key position cadmia |
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Granted publication date: 20110608 Termination date: 20131026 |