CN109182773A - A kind of aluminium ingot slagging-off nitrogen cooling treatment method - Google Patents
A kind of aluminium ingot slagging-off nitrogen cooling treatment method Download PDFInfo
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- CN109182773A CN109182773A CN201811217824.9A CN201811217824A CN109182773A CN 109182773 A CN109182773 A CN 109182773A CN 201811217824 A CN201811217824 A CN 201811217824A CN 109182773 A CN109182773 A CN 109182773A
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- slag
- aluminium
- nitrogen
- cooling treatment
- aluminium slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
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- Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to aluminum alloy processing technology field and disclose a kind of aluminium ingot slagging-off nitrogen cooling treatment method; the following steps are included: in melting casting ladle molten aluminum; slag-cleaning agent is blown to molten aluminum using nitrogen first; continue 12 minutes; then it reuses hydrogen and is blown slag-cleaning agent to molten aluminum; continue 3 minutes; melting melting aluminium slag after coming out of the stove enters in the porous turning barrel of turning barrel granulator; with the high-speed rotation of porous turning barrel; melting aluminium slag is thrown out of from hole; then it is granulated into particle in nitrogen atmosphere, obtains granulation aluminium slag.The present invention saves slag basin or slag ladle preparation in conventional processes, hangs slag and the processes such as clinker is broken, greatly simplifie the process flow after aluminium slag is come out of the stove, save the aluminium slag cooling treatment time, improve 3~4 times of cooling efficiency, aluminium slag cooling cost is reduced, provides a kind of high-efficient, easy to operate, economical and practical new method to melt the cooling treatment of aluminium slag.
Description
Technical field
Present invention relates particularly to a kind of aluminium ingot slagging-off nitrogen cooling treatment methods, belong to aluminum alloy processing technology field.
Background technique
Currently, as aluminum profile is more and more wider in the application of industrial circle, to aluminum profile shape, dimensional accuracy and surface matter
The requirement of amount is higher and higher, and market competition is also more and more fierce, and each manufacturing enterprise reduces cost, mention to reach product requirement
High efficiency improves in the transformation process of extrusion line to extrusion line, assists except reduction extruder is tried
Outside time, also using speed-raising extrusion, at home, the conventional method for improving extrusion speed is using low-temp. extrusion technology, in state
Outside, advanced extrusion line often uses mold or extrusion cylinder cooling, to disperse and offset flow of metal and extrusion process
Partial heat caused by rubbing, prevents mold temperature from increasing with the raising of extrusion speed, guarantees profile size and shape
Stabilization, and prevent surface from mass defect occur.
Currently, there are mainly three types of the modes of aluminum profile Isothermal Extrusion: first is that the heat gradient of ingot casting adjusts form, i.e., to casting
Ingot carries out gradient-heated or gradient is cooling, and the Isothermal Extrusion for realizing profile is adjusted by the gradient to ingot casting heat;Second is that setting
The closed-loop control system of temperature and speed adjusts control extrusion speed by obtaining the outlet temperature information of profile to realize
Warm Extrusion;Third is that closing emulation technology using misfortune, the speed and temperature parameter to extrusion process carry out hot power misfortune and close emulation, pass through
Misfortune closes one speed curve diagram of temperature of emulation, is controlled extrusion speed to reach Isothermal Extrusion.
In the practical extrusion process of profile, extrusion speed is not improved and is difficult to improve production efficiency and improve extrusion speed,
The outlet temperature of profile rises with it, and squeezing outlet temperature is a key parameter, not only influences the mechanical performance of profile, Er Qieying
The surface quality and dimensional accuracy for ringing profile, when extruding outlet temperature is too high, profile just will appear various appearance qualities
And dimensional accuracy problem, especially coarse-grain phenomenon is inevitable, and nitrogen cooling technology is introduced during profile extrusion, can incite somebody to action
The waste heat generated by speed-raising is shunted, it is ensured that and ingot casting squeezes under Isothermal Condition, and control profile goes out die temperature,
Guarantee the stabilization of section quality, environment is harmful.Current nitrogen cooling treatment method haves the shortcomings that complicated for operation, cost is high,
Therefore, developing aluminium ingot slagging-off nitrogen cooling treatment method just has particularly important meaning.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of aluminium ingot slagging-off nitrogen cooling treatment side
Method, saves in conventional processes slag basin or slag ladle prepares, hangs slag and the processes such as clinker is broken, greatly simplifies after aluminium slag comes out of the stove
Process flow saves the aluminium slag cooling treatment time, improves 3~4 times of cooling efficiency, reduces aluminium slag cooling cost, for melting
The cooling treatment of aluminium slag provides a kind of high-efficient, easy to operate, economical and practical new method, can effectively solve background technique
The problems in.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of aluminium ingot slagging-off nitrogen cooling treatment method, comprising the following steps:
Step 1: being blown slag-cleaning agent in melting casting ladle molten aluminum to molten aluminum using nitrogen first, continuing 12 minutes, then make again
It is blown slag-cleaning agent to molten aluminum with hydrogen, continues 3 minutes, the melting melting aluminium slag after coming out of the stove enters the porous turning barrel of turning barrel granulator
In, with the high-speed rotation of porous turning barrel, melts aluminium slag and be thrown out of from hole, particle is then granulated into nitrogen atmosphere, is obtained
To granulation aluminium slag；
Step 2: above-mentioned granulation aluminium slag is sent into the feed bin that nitrogen flow is 1000~1500L/min, it is cooled to 100~
150℃；
Step 3: granulation aluminium slag after cooling to step 2 is sieved, is crushed, finished product aluminium slag is obtained.
As a preferred technical solution of the present invention, in step 1, the revolving speed of the porous turning barrel is 400~500r/
Min, bore dia are 15~40mm.
As a preferred technical solution of the present invention, in step 1, the temperature of the molten aluminum is 600~700 DEG C.
As a preferred technical solution of the present invention, in step 2, the nitrogen pressure is 0.2~0.4Mpa.
As a preferred technical solution of the present invention, in step 3, the screening referred to 20 mesh and 30 mesh double deck screens.
The beneficial effects obtained by the present invention are as follows being: saving in conventional processes slag basin or slag ladle prepares, hangs slag and clinker is broken
Etc. processes, greatly simplifie the process flow after aluminium slag is come out of the stove, save the aluminium slag cooling treatment time, improve cooling efficiency 3
~4 times, aluminium slag cooling cost is reduced, provides a kind of high-efficient, easy to operate, economic reality to melt the cooling treatment of aluminium slag
The new method of favour.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1:
A kind of aluminium ingot slagging-off nitrogen cooling treatment method of the present invention, comprising the following steps:
Step 1: being blown slag-cleaning agent in melting casting ladle molten aluminum to molten aluminum using nitrogen first, continuing 12 minutes, then make again
It is blown slag-cleaning agent to molten aluminum with hydrogen, continues 3 minutes, the melting melting aluminium slag after coming out of the stove enters the porous turning barrel of turning barrel granulator
In, with the high-speed rotation of porous turning barrel, melts aluminium slag and be thrown out of from hole, particle is then granulated into nitrogen atmosphere, is obtained
To granulation aluminium slag；
Step 2: above-mentioned granulation aluminium slag is sent into the feed bin that nitrogen flow is 1300L/min, it is cooled to 130 DEG C；
Step 3: granulation aluminium slag after cooling to step 2 is sieved, is crushed, finished product aluminium slag is obtained.
Further, in step 1, the revolving speed of the porous turning barrel is 450r/min, bore dia 30mm.
Further, in step 1, the temperature of the molten aluminum is 650 DEG C.
Further, in step 2, the nitrogen pressure is 0.23Mpa.
As a preferred technical solution of the present invention, in step 3, the screening referred to 20 mesh and 30 mesh double deck screens.
Embodiment 2:
A kind of aluminium ingot slagging-off nitrogen cooling treatment method of the present invention, comprising the following steps:
Step 1: being blown slag-cleaning agent in melting casting ladle molten aluminum to molten aluminum using nitrogen first, continuing 12 minutes, then make again
It is blown slag-cleaning agent to molten aluminum with hydrogen, continues 3 minutes, the melting melting aluminium slag after coming out of the stove enters the porous turning barrel of turning barrel granulator
In, with the high-speed rotation of porous turning barrel, melts aluminium slag and be thrown out of from hole, particle is then granulated into nitrogen atmosphere, is obtained
To granulation aluminium slag；
Step 2: above-mentioned granulation aluminium slag is sent into the feed bin that nitrogen flow is 1500L/min, it is cooled to 150 DEG C；
Step 3: granulation aluminium slag after cooling to step 2 is sieved, is crushed, finished product aluminium slag is obtained.
Further, in step 1, the revolving speed of the porous turning barrel is 500r/min, bore dia 40mm.
Further, in step 1, the temperature of the molten aluminum is 700 DEG C.
Further, in step 2, the nitrogen pressure is 0.4Mpa.
Further, in step 3, the screening referred to 20 mesh and 30 mesh double deck screens.
Embodiment 3:
A kind of aluminium ingot slagging-off nitrogen cooling treatment method of the present invention, comprising the following steps:
Step 1: being blown slag-cleaning agent in melting casting ladle molten aluminum to molten aluminum using nitrogen first, continuing 12 minutes, then make again
It is blown slag-cleaning agent to molten aluminum with hydrogen, continues 3 minutes, the melting melting aluminium slag after coming out of the stove enters the porous turning barrel of turning barrel granulator
In, with the high-speed rotation of porous turning barrel, melts aluminium slag and be thrown out of from hole, particle is then granulated into nitrogen atmosphere, is obtained
To granulation aluminium slag；
Step 2: above-mentioned granulation aluminium slag is sent into the feed bin that nitrogen flow is 1000L/min, it is cooled to 100~150 DEG C；
Step 3: granulation aluminium slag after cooling to step 2 is sieved, is crushed, finished product aluminium slag is obtained.
Further, in step 1, the revolving speed of the porous turning barrel is 400r/min, bore dia 15mm.
Further, in step 1, the temperature of the molten aluminum is 600 DEG C.
Further, in step 2, the nitrogen pressure is 0.2Mpa.
Further, in step 3, the screening referred to 20 mesh and 30 mesh double deck screens.
It should be noted that the present invention is a kind of aluminium ingot slagging-off nitrogen cooling treatment method, slag basin in conventional processes is saved
Or slag ladle prepares, hangs the processes such as slag and clinker be broken, greatly simplifies the process flow after aluminium slag is come out of the stove, it is cold to save aluminium slag
But the time is handled, 3~4 times of cooling efficiency is improved, reduces aluminium slag cooling cost, provides one to melt the cooling treatment of aluminium slag
High-efficient, easy to operate, the economical and practical new method of kind.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
- The nitrogen cooling treatment method 1. a kind of aluminium ingot removes the gred, it is characterised in that: the following steps are included:Step 1: being blown slag-cleaning agent in melting casting ladle molten aluminum to molten aluminum using nitrogen first, continuing 12 minutes, then make again It is blown slag-cleaning agent to molten aluminum with hydrogen, continues 3 minutes, the melting melting aluminium slag after coming out of the stove enters the porous turning barrel of turning barrel granulator In, with the high-speed rotation of porous turning barrel, melts aluminium slag and be thrown out of from hole, particle is then granulated into nitrogen atmosphere, is obtained To granulation aluminium slag；Step 2: above-mentioned granulation aluminium slag is sent into the feed bin that nitrogen flow is 1000~1500L/min, it is cooled to 100~ 150℃；Step 3: granulation aluminium slag after cooling to step 2 is sieved, is crushed, finished product aluminium slag is obtained.
- The nitrogen cooling treatment method 2. a kind of aluminium ingot as described in claim 1 removes the gred, which is characterized in that described in step 1 The revolving speed of porous turning barrel is 400~500r/min, and bore dia is 15~40mm.
- The nitrogen cooling treatment method 3. a kind of aluminium ingot as described in claim 1 removes the gred, it is characterised in that: described in step 1 The temperature of molten aluminum is 600~700 DEG C.
- The nitrogen cooling treatment method 4. a kind of aluminium ingot as described in benefit requires 1 removes the gred, it is characterised in that: in step 2, the nitrogen Atmospheric pressure is 0.2~0.4Mpa.
- The nitrogen cooling treatment method 5. a kind of aluminium ingot as described in benefit requires 1 removes the gred, it is characterised in that: in step 3, the sieve Divide and referred to 20 mesh and 30 mesh double deck screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811217824.9A CN109182773A (en) | 2018-10-18 | 2018-10-18 | A kind of aluminium ingot slagging-off nitrogen cooling treatment method |
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| CN201811217824.9A CN109182773A (en) | 2018-10-18 | 2018-10-18 | A kind of aluminium ingot slagging-off nitrogen cooling treatment method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020972A (en) * | 2007-03-16 | 2007-08-22 | 魏勇 | Slag remover for aluminum or aluminum alloy |
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| CN105002368A (en) * | 2015-08-12 | 2015-10-28 | 滨州盟威戴卡轮毂有限公司 | Deslagging method and device of molten aluminum |
| CN106011491A (en) * | 2016-06-12 | 2016-10-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving cooling efficiency of titanium slag |
-
2018
- 2018-10-18 CN CN201811217824.9A patent/CN109182773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020972A (en) * | 2007-03-16 | 2007-08-22 | 魏勇 | Slag remover for aluminum or aluminum alloy |
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| CN105002368A (en) * | 2015-08-12 | 2015-10-28 | 滨州盟威戴卡轮毂有限公司 | Deslagging method and device of molten aluminum |
| CN106011491A (en) * | 2016-06-12 | 2016-10-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving cooling efficiency of titanium slag |
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