CN200974860Y - Molten aluminum refining equipment - Google Patents
Molten aluminum refining equipment Download PDFInfo
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- CN200974860Y CN200974860Y CN 200620129435 CN200620129435U CN200974860Y CN 200974860 Y CN200974860 Y CN 200974860Y CN 200620129435 CN200620129435 CN 200620129435 CN 200620129435 U CN200620129435 U CN 200620129435U CN 200974860 Y CN200974860 Y CN 200974860Y
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Abstract
The utility model is the improvement of a molten aluminum refining equipment. The equipment includes a container maintaining the molten aluminum during refining process, an air distribution gear equipped in the container and including: a rotatable shaft extending through a cylindrical sleeve; the top end of the shaft is combined to a drive gear, the bottom end of the shaft is connected to a rotor, and a gear is restricted to deliver the refined air into the rotor channel. According to one aspect of the improvement, the gear restricting the refined air channel includes a shaft above forming a groove, which restricts the airflow path; the airflow path is longer than the shaft, and the inner surface of the cylindrical sleeve restricts the refined air channel. When the rotor shaft forms at least a spiral groove and a straight groove on the periphery to restrict the refined air channel, a convenient structure will be provided. The straight groove parallels to the axial line and consists of two plain faces.
Description
Technical field
The utility model is the improvement of equipment that molten aluminum refining is used, and described molten aluminum is used to make original aluminum and secondary aluminum or partial regeneration aluminium and alloy thereof.
Background technology
Derive from such as primary metal, waste material and the molten aluminum in modal source such as melted ingot again, before being cast into ingot, thin plate or rod, must purify usually.This can by with rare gas element, be that nitrogen or argon form bubble, its aluminium by the fusion form is carried out.In certain embodiments,, add halogen gas, be generally chlorine, perhaps can only utilize halogen gas in order to purify.Such processing can be removed dissolved hydrogen, such as basic metal such as sodium, potassium and lithiums, and such as alkaline-earth metal such as calcium, and as the little solia particle of the oxide compound of aluminium and other non-metallic inclusions etc.In this processing, thereby the size by reducing the bubble in the molten aluminum, and increase the area of total gas-metallic surface, increase the efficient of the gas of given volume.By described bubble being distributed in the whole body of processed molten aluminum, also can increase the efficient of bubble.Make little bubble and be, adopt to be arranged on the intravital swivel nozzle of molten aluminum (spinning nozzle) very effective method of its dispersive.Can obtain to be used for the business system of this purpose.Can increase the refining speed of this swivel nozzle by the speed that increases employed production air-flow here.Usually also must increase the speed of rotation of nozzle, so that continue to make required small bubbles and spread all over whole molten aluminum at the fining cell of system and disperse described small bubbles.The increase of this air-flow and nozzle speed of rotation is accompanied by the eddy current and the turbulent flow that increase usually on the surface of molten aluminum.But the maximum refining speed of giving fixed system is subjected to the restriction of its maximum eddy current that can tolerate and surface turbulence or roughness.
Basically, Xiang Guan technology involves the gas that disperses injection with the form of minimum bubble in whole melt.Be drawn onto in the bubble by separating, hydrogen is removed from melt, other nonmetallic impurity then is thus lifted in the scum layer by flotation.Hydrogen is driven by partial pressure difference from the transfer of melt to rare gas element bubble inside.Hydrogen has high diffusibility in molten aluminium, and transport reaction is basically by interface control.Interfacial area is big more, and it is short more to reach given needed time of the degree of degassing.In addition, interfacial area is big more, and bubble is run into and to capture the chance of inclusion also high more.Therefore, surface area is big more, and refining efficiency is high more.The dispersion of jet flow stream utilizes the gas distributor of rotation to realize that described divider produces a large amount of turbulent flows in melt.Turbulent flow makes little non-metal particle be condensed into big particulate aggregate, and described particulate aggregate is floated to bath surface by bubble.Turbulent flow also causes little bubble hit and grows up.This turbulent flow guarantees also that in metal jet flow stream mixes fully with melt, and the inside that remains on container does not have the assembly of settling and oxide compound.Floating nonmetallic impurity and the scum silica frost that comes out takes out from system together from metal, then left system together with the exhausted jet flow stream by the hydrogen of desorb from metal.
Except other constitutional features, the rotation gas distributor has an axle and blade rotor (joining on the described axle) and vane-type stator, and they interact so that required bubble form is provided in melt.In when operation, this device causes flow pattern near this device in metal, makes formed bubble move along the flow vector that is generated, and described flow vector towards foreign side, and has the component downward with respect to the vertical axes of injection member along radial direction.These flow patterns have several favourable effects.At first, in melt, provide vertical basically stirring, by this, combine with the blade of rotation, cause gas is subdivided into little discrete bubble along the air-flow that installs directed downwards.The second, apace bubble is transported from importing to molten intravital point, prevent that bubble is flocked on the highest zone of bubble concentration.The 3rd, prolong by the gas of dispersive bubble well in the molten intravital residence time, because under the influence of gravity, bubble can just not rise on the surface once forming immediately.
The equipment of the above-mentioned type generally comprises the container that is provided with the inlet that is used for aluminium and is used for the outlet of molten metal, and at least one is arranged on the rotation gas distribution mechanism in the described container.Although have a lot of distortion, described gas distribution mechanism generally comprises rotatable shaft, joins in the top on the driving mechanism, is connected in its lower end on the round rotor of vane-type.Thereby being installed, rotor is used for rotation, and the rotation of next-door neighbour's stator, a little gap is provided between rotor and stator.Passage from the refinery gas body and function to rotor that carry is set.Via the little gap between rotor and the stator refining gas is discharged in the melt of aluminium.Under enough pressure, refining gas is fed to the upper end of passage, so that be ejected in the container.Carried out in such device United States Patent (USP) below describing and explanation, the associated viscera that these patents disclosed, by reference, here in addition combination is used to illustrate in greater detail background of the present utility model.
| U.S.Pat.No. | Inventor(s) | Date |
| 3,743,262 4,040,610 5,158,737 4,203,581 4,290,588 5,234,202 5,846,481 | Szekely Szekely Stein Pelton Pelton Pelton Tilak | 07/03/1973 08/09/1997 10/27/1992 05/20/1980 09/22/1981 08/10/1993 12/08/1998 |
For some reason, in rectification systems, undue surface turbulence is undesirable.Cause that metal surface area increases, thus the higher speed of response of any reactive gas that causes and may exist.For example, the oxygen that the comes from air formation aluminum oxide film that will react, the water vapour that comes from air will react, and forms hydrogen and sull in metal.And then when solia particle was carried on the surface of molten metal by the refining bubble, surface turbulence can be disturbed their combinations in desirable separation and the buoyant scum layer on being formed on the aluminium molten mass from bubble.Undue turbulent flow also can cause the buoyant scum silica frost to be distributed to again in the fused aluminium.Except surface turbulence, in reaction vessel, surperficial and subsurface eddy current does not meet needs yet.The existence of eddy current particularly along the eddy current of center vertical axes, is tended to scum silica frost and slag captured absorption is got back in the melt, thereby increase the load that is added on the refining unit inherently.This problem is very serious, and particularly for " array " formula treatment system with high flow rate of metal, this system is provided in the reaction vessel nominal metal residence time less than 5 minutes.Although be difficult to measure the quantitative effect of undue surface eddy and turbulent flow, generally acknowledge that as everyone knows and generally high eddy current and surface turbulence do not meet needs, the personnel that are familiar with the ability city attempt to limit this surface eddy and turbulent flow.
A result of the gas flow rate in the refining unit of increase intravital speed of rotation of molten metal and/or increase prior art is, in the molten aluminum body, usually only some molten aluminum forms limited well circulation, and a sizable part that stays molten aluminium is not stirred and is not processed basically.The United States Patent (USP) U.S.Pat.No.3 that is formed on Szekely of circulation carried out in 743,263 discussing and describing.In one type of prior art syringe, the formation of circulation always tends to cause flowing downward of aluminium, thereby causes downward the flowing near near slag the stator or scum silica frost.Therefore, because in fact impurity can be introduced into or is incorporated into once more in the molten aluminum, equipment is on certain degree, to I haven't seen you for ages self defeating.The comprehensive action of eddy current and circulation only can cause being limited in the refining efficiency in the one type of prior art syringe.In all one type of prior art syringe, unique means that can reduce the deleterious effect of eddy current and circulation are the speed of rotation that reduces rotor.But at lower spinner velocity, it is not best that airflow crash is become bubble, therefore, utilizes big surface area can not reach fine bubbles dispersion.
By noted earlier and can clearly be seen that by research to prior art, need to improve molten aluminum refining equipment, so that with the purifying reaction maximization of gas, and prevent to be formed on the top slag or impurity is introduced or introduced once more to scum silica frost.At USPatentNo.5, proposed by Tilak in 946,481 before this needs, still, because metal alloy constantly becomes most advanced and sophisticated more, so the requirement of efficient of purification system that improves molten metal is very strong.
The utility model content
Therefore, technical task to be solved in the utility model is an efficient of further improving the purification system of molten metal.
The purpose of this utility model provides a kind of equipment that is used for molten aluminum refining, this equipment is for the device of " batch-type " and " straight-line type continuously ", with the refining efficiency maximization of known gas injection purifying method, and the introducing of impurity in molten aluminium in elimination scum silica frost or the slag.
The utility model is the improvement in the molten aluminum refining equipment, and described equipment comprises: the container that is used for keeping at refining process molten aluminum; At least one is arranged on the gas distribution mechanism in this container, described distributor gears comprises the rotatable shaft that extends by cylinder-shaped sleeve, described axle is attached on the driving mechanism in the top, is connected on the rotor in its lower end, and limits the mechanism that refining gas is transported to the passage of rotor.According to this improved aspect, the mechanism that limits the refining gas passage comprises the described axle that forms groove in its surface, described groove limits gas flow path, and the length of described gas flow path is longer than the length of axle, and the internal surface of cylinder-shaped sleeve further limits described refining gas passage.When rotor spindle forms at least one spiral slot of limiting the refining gas passage and at least one straight trough on its periphery, a kind of structure very easily is provided, and described straight trough is parallel to the axis of axle, and is formed by two planes, wherein, a plane and another planar shaped are at an angle.This angle is preferably in 70 ° to 120 ° scope.One of plane preferably has the width at about 0mm to 3.0mm, more preferably, and in the scope of 0.8mm to 2.6mm, most preferably in the scope of 1.0mm to 1.5mm.Another one planar width is preferably than at least 15 times greatly of the width of a described face.Preferably, on axle, form two described straight troughs.
On the other hand, the utility model is the improvement to the molten aluminum refining equipment of top described type, wherein, described improvement comprise around sleeve pipe and occupy molten aluminum the surface a part fall Frusto-conical stator, wherein, the diameter of this stator is the twice of telescopic diameter at least.Easily and preferably, when rotor did not move, stator swam on the aluminium, and during the nitrogen rotor motion, stator reaches an equilibrated levitation position on sleeve pipe.The equilibrium theory of tide of stator is positioned on the trim point that the eddy current of the buoyancy that makes progress that is applied on the stator and liquid aluminium and the downward power on the stator that is applied to that circulation produces is complementary, and described two power all influence the metal velocity vector of directed downwards.
Aspect another, the improvement of equipment is comprised such configuration, wherein, container has base plate and wall, and wherein, the wall of a container face is dispersed from the bottom surface straight up at least in part.Preferably, the clean angle of divergence that wall of a container makes progress is spent about 16 degree, preferably about 10-11 degree from about 5 or 6.
The invention has the beneficial effects as follows: can be with the purifying reaction of gas maximization, prevent to be formed on top slag or scum silica frost and introduce or introduce impurity once more, make the efficient of purification system of molten metal more improve.
Description of drawings
Fig. 1 is the schematic synoptic diagram of the vertical section of equipment of the present utility model, is used to illustrate feature of the present utility model and advantage thereof.Clearly do not express the well heater of the temperature that is used to keep molten aluminum among the figure, but if necessary, can be included in the equipment; But these well heaters are not parts of the present utility model.
The synoptic diagram of the bottom surface of the container of this equipment of Fig. 2 and a wall is used to illustrate the angular relation that exists between bottom surface and the wall.
Fig. 3 is the vertical cross section of amplification of the improved gas Supply Structure of improved gas dispersion of the present utility model mechanism.
Fig. 4 is the horizontal sectional drawing of the improved gas Supply Structure of improved gas dispersion of the present utility model mechanism, the parallel groove of expression gas flow path.
Embodiment
With reference to Fig. 1, the outside 20 of smelting furnace typically is formed from steel.In the inside of wall 20, be the impervious refractory container 22 of casting alumina of low-thermal conductivity insulation block and molten aluminum.Can certainly use other refractory materials, be 60% Al but typically can cast alumina
2O
3, 0.2% Fe
2O
3, surplus is other material.The refractory walls of container 22 all is a low-thermal conductivity, and provides heat insulation, and the needs of this heat insulation aluminium heating that will be in container minimize or eliminate this needs.External structure constitutes with the superstructure (not shown) of bell or furnace roof 24 and supporting gas distributor and electric motor 26.Refining operation is from by 30 molten metals that enter container that enter the mouth, and described inlet can be inlaid with silicon carbide bulk or other refractory materials.
The refinery gas body of the rotation gas distributor that the molten aluminium utilization is represented by general usefulness 50 stirs at full tilt and sprays.The rotor 52 of divider is rotated counterclockwise; But, be assigned with the circulation pattern that device causes and have vertical component in melt.Typically, in the prior art, by the symmetry of skew work area, the general formation that causes eddy current at the center of container.The formation of eddy current is reduced in the minimal effort, also adopted baffle plate.
The metal of refining enters the schematically outlet pipe 40 of expression of Fig. 1 left side, and imports in the downstream chamber 42.Chamber 42 by the body portion of the aluminium in the refractory walls of graphite block and/or silicon carbide bulk and the container 22 from.Furnace bottom can be inlaid with graphite cake.
The scum silica frost d that swims on the metal is played on the surface of the scraper of baffle plate and skimmer effect or the melt that close inlet 30 was caught and focused on to piece 32, can be removed at an easy rate from this.The exhausted jet flow stream 30 is left system by entering the mouth.By will such as rare gas elementes such as argon gas via inlet tube or and jet flow stream introduce together, provide protection with respect to melt to headspace.
Provide heat in any traditional or common mode to smelting furnace.Typically nickel-chromium resistance heating element is inserted in dual-use function (lining+heating) graphite block, this graphite block be maintained at the molten aluminum position contacting on.
In Fig. 1, express motor 26.With this motor together, temperature regulator is set, transformer and other traditional equipment so that drive divider and the described equipment of operation, as in the bonded prior art of here pressurizeing by reference quite detailed as described in.The sealing of entrance and exit, tubing system and the miscellaneous equipment of protecting the integrity of a closed system also are legacy equipments, do not illustrate in the drawings.
Although in described equipment, express a rotation gas distribution mechanism 50,, as long as equipment increases pro rata, also can use two or more gas distribution mechanisms.Shown in gas distributor or gas injection apparatus, comprise the rotor 52 of the passage 56 that has between blade 54 and the blade.Rotor 52 rotates by the axle 60 that connects thereon by motor 26.The hollow stator 58 of utilizing hollow sleeve 56 and described sleeve pipe to be fixed thereon is kept apart axle 60 and melt.58 outside surface of stator can be slick or vaned.Between rotor 52 and stator 58, have enough gaps, outwards flow so that allow rotor 52 to rotate freely and permitted the process gas freedom.The indoor design of device, make it to have a helical channel 62, described helical channel is formed on one or more spiral slots on axle 60 the outside surface and the internal surface of sleeve pipe 56 limits, by this helical channel, gas can be imported or is forced in the gap between rotor 52 and the stator 58.As shown in Figure 4, except helical channel 62, the enhanced design is provided with two straight troughs 120 along the length direction of axle 60.Each groove is formed by at least two angled planes that process on the periphery of axle 60 (120a, 120b).The angle that two planes (120a, 120b) form is preferably in 70 ° to 120 ° scope.A plane (120a) preferably has the width in 0mm to the 3.0mm scope, more preferably has the width in the scope of 0.8mm to 2.6mm, most preferably has the width in the scope of 1.0mm to 1.5mm.The width on another one plane (120b) is preferably big 15 times than a described planar width at least.The number of straight trough 120 is not limited to two.Axle 60 also can be provided with a groove or more than two groove.Axle 60 has identical axis with sleeve pipe 56 with stator 58, thereby two passages are all around this axis.Axle 60 and rotor have and stator and the axial co-axial axis of telescopic.Be provided under enough pressure to the upper end of passage supply gas and be ejected into container and molten intravital any traditional mechanism, but not shown.Along with the length of gas along rotor moves downward, gas molecule closely contacts with the telescopic internal surface.Because the temperature that is involved typically surpasses 600 degrees centigrade, the telescopic heat is given gas molecule by intensive turbulent flow convection current and by radiation delivery.Therefore, when gas when rotor flows, extraordinarily hot by contact with sleeve pipe, feasible in being ejected into melt the time, the temperature of gas is in close proximity to the temperature of melt.As will be described, this is one of very important feature of the present utility model.
Typical container can form from about 4 feet to the about 6 feet diameter and the degree of depth.Typical gas injection mechanism can have or not have tapering from about 4 to 8 inches diameter between rotor and sleeve pipe.For rotor, typical speed is 400 to 600 revolutions/per minute, has the gas throughput of per minute 2 to 5 standard cubic foots.
Now get back to Fig. 1, will be noted that, wall of a container is tapered to foreign side from the bottom surface.This also is a key concept of the present utility model and feature.
One of serious restriction of prior art is because after they are injected in the melt of aluminium, and bubble is coalescent to be caused.Along with bubble rises to the surface, coalescently cause less and bigger bubble.Big bubble increases the turbulent flow at the interface between molten aluminum and scum layer, causes some backflows or the impurity of scum silica frost drawn to get back in the aluminium.The less bubble that reaches the top of aluminium is reduced to bottom line with this source of pollution.The more important thing is that when bubble was agglomerated into bigger bubble, the surface area of gas-molten metal was greatly diminished.This causes the reduction of the highly significant of purifying reaction speed, because reaction only occurs on gas-melt interface.As previously described, be drawn onto in the bubble, hydrogen is removed, and other nonmetallic impurity be thus lifted in the scum layer by flotation by in melt, separating.Hydrogen is from the migration of melt to rare gas element bubble inside, by the dividing potential drop pressure differential.Hydrogen has high diffusivity in molten aluminium, transport reaction is mainly by interface control.Interfacial area is big more, and it is short more to arrive the required time of degassing of given degree.And interfacial area is big more, is run into the captive chance of inclusion also big more by bubble.Therefore, surface area is big more, and refining efficiency is high more.And then when the reduced number of bubble, given extrinsic region is contacted and adheres to by bubble on the bubble or can reduce rapidly with the probability of bubble reaction, and the interfacial area between gas and metal reduces.
In whole notion of the present utility model, comprise two kinds of mechanisms, be used to reduce and significantly eliminate the problem coalescent and that produced thus of this gas.
At first, as previously described, before being ejected into it in molten metal, with the preheating of refining gas.Although can adopt other heater pocket structure,, adopting foregoing spiral air flow stream is very favourable as the primary heater unit of process gas.According to this notion, this air flow path is limited by the outside surface of axle and telescopic internal surface, and limits its length air flow path longer than the length of axle.When cold gas was injected in the molten metal as thin gas, the perfect gas law that gas is similar to as previously described immediately expanded, and formed bigger bubble.The temperature of 1325 Fahrenheit degrees from room temperature to typical molten aluminum, under identical pressure, gas expansion is to three times of the volume of its initial room temperature.If gas is identical with the temperature of melt, then can avoid this expansion, a large amount of gas can be incorporated in the melt, and the upper surface of melt or melt is worsened.
The second, as shown in Figure 1, wall of a container, perhaps the part of wall of a container face is at least dispersed with angle [alpha] shown in Figure 3 straight up from the bottom surface.For the purpose of easier explanation notion of the present utility model, represented bottom surface is flat and level in illustrative embodiment shown in Figure 1, and still, the shape of bottom surface is not very crucial.Crucial is, exist a described wall from the bottom surface dispersing only straight up.In concept, can simply container be described as frustum; But described wall needs not be arciform.As previously described, although wall any significantly disperses the processing that will improve aluminium,, described wall or be approximately 11 ± 0.5 degree to the best angle of divergence from the bottom surface of some wall.
In theory, wall leaves the angle of divergence that makes progress of container bottoms, should be 10.5 degree; But, it is believed that the container that the clean angle of divergence of utilizing described wall to make progress from the bottom surface is approximately 7 to 8 degree can obtain near optimal results.Here, " the clean angle that makes progress of described wall " is used for describing a kind of like this container, in this container, not all wall is all dispersed from the imaginary vertical axes at the center by container, perhaps and unequally disperses, still, wherein, at least some wall is sufficiently dispersed, so that the upper surface of amplification is provided, and the upper surface of the container of the identical volume of the size of described upper surface and the wall of dispersing that has the clean angle of divergence that has upwards or the equal wall of dispersing big or small substantially the same.Therefore, has the wall that some is upwards dispersed, and with having the angle of upwards dispersing is that the containers of falling the truncated cone of 10 degree have identical volume and identical upper surface area with respect to the rectangular vessel of the ratio of base area, will have the 10 clean angles of divergence of spending that make progress.
The clean angle of divergence that makes progress of wall of container is very important, because along with bubble upwards moves in melt, the metallostatic pressure that is applied on each bubble reduces, it allows air bubble expansion.In the prior art, air bubble expansion under the less pressure on the top of melt, because the size that their increase, bubble is forced to draw close.Bubble is drawn close, and molten aluminum between bubble stream is few more, and two or more bubbles are coalescent, and to become the possibility of bigger bubble big more, causes problem as previously described thus.
By the aluminium refining unit of described type is provided, promptly, refining vessel, the inlet that is used for aluminium, be used for the outlet of molten aluminum, be used for bubble flow is ejected into the molten intravital gas introducing mechanism of container, wherein wall of container has clean dispersing of making progress, bubble tends to upwards and outwards move, thereby reduces the coalescent possibility of bubble.
Recited above near the scum silica frost of stator or the problem that slag layer imports impurity once more, as shown in Figure 1, solve by floating stator 70.Floating stator can and easily with rotor have approximately identical diameter and and submerged stator 58 about identical height, perhaps it also can be very big.The proportion of stator is enough lower than the proportion of molten aluminum, even so that described in front down vector when existing, also provides buoyancy.Its overall consistency is preferably selected like this, makes stator swim on the immobilized molten aluminum, and because the downward vector of being discussed, when rotor was in the speed of rotation of operation, stator was suspended in the molten aluminum.Can be easy to determine optimum density for given container by simple experiment.What usually, the density of stator was total will be in 2.0 to 2.5gm/cm3 scope.Must be provided for collecting the scum silica frost on the upper surface and remove enough surface areas of the gas of injection, still, can utilize bigger floating stator, for example, its diameter is 2 to 5 times of diameter of submerged stator and rotor.Floating stator 70 hinders as the foregoing eddy current that the annular round-robin result of aluminium forms inherently in melt, thereby, eliminate in the prior art from scum layer and be introduced in little trash flow the melt near stator.
Three kinds of structures described above, gas preheater, the container that has the wall of upwards dispersing only, and floating stator have been eliminated described above in fact and by with reference to being attached to the most serious problem that the user faced of the device of the prior art in the utility model.
Because requirement for the complexity of the soundness of the internal structure of the purity of molten metal and molten aluminum and alloy thereof, the present device that has the problems referred to above, the affinability that lacks aluminium, particularly, for for example aluminium foil, the aluminium sheet of the anodic oxidation treatment of space flight and other cast aluminium of defence level and extruding light, the application of the aluminium that the aluminium engine group in the automotive industry etc. are final.Come from specification of quality and the pressure of the final user of aluminium to the producer of aluminium, the instrument together with being easy to obtain to be used to detect the impurity level of metal guarantees that the utility model obtains the coml exploitation soon.
Industrial application
The utility model is used for metallurgical industry, more particularly, is used for casting and casting primary aluminium and secondary aluminium and device alloy.
Example 1: when at aluminium alloy AA6063 test equipment of the present utility model as described herein, observe for the efficient of degassing and improve significantly. For 11.3 hundred ten thousand tons the flow velocity of motlten metal per hour, the temperature of 720 degrees centigrade average motlten metal, and the hydrogen input concentration of per 100 gram alloy 0.39cc; The hydrogen output concentration of the per 100 gram alloy 0.09cc of the output of measuring. Significantly up to 76.9% the efficient of degassing, this has not heard in the prior art in this representative.
Example 2: similarly, for the processing of alloy A A7075, measure the very high efficient numerical value that degass. Except the efficient of degassing was modified, equipment of the present utility model had also increased the efficient of removing of removing efficient and alkali and alkaline earth metal ions of inclusion. And observe, when utilize making the axle that helicla flute and flat finished surface are arranged and cast, motlten metal will be easy to the ceramic foam filter by very thin 60PPI level, and the loss that can not produce any pressure head level (head level) of passing filter. This has directly proved the very refining of motlten metal of the device processes of utilizing preferred embodiment and pure condition. In the test that another alloy A A2024 is carried out, the result of the ultrasonic test of casting and blank sample homogeneous shows that low-down background noise in checked metal shows the high-purity of metal and purer internal structure.
Claims (23)
1. a molten aluminum refining equipment comprises: the container that is used for keeping at refining process molten aluminum; At least one is arranged on the gas distribution mechanism in the container, and described distributor gears comprises the rotatable shaft that extends through cylinder-shaped sleeve, and described axle is attached on the driving mechanism in the top, is connected on the rotor in its lower end; And the mechanism of the passage of refining gas is carried in qualification to rotor, wherein, the mechanism that limits the refining gas passage comprises the described axle that forms groove in its surface, described groove limits gas flow path, the length of this gas flow path is greater than the length of axle, the internal surface of cylinder-shaped sleeve further limits described refining gas passage, dispose and make described rotor and sleeve pipe like this, that is: make it to limit described passage, be used for when the gas flow rotor by contacting with sleeve pipe gas heating to temperature near melt;
Further comprise the stator around the telescopic shape of falling the frustum, this stator has the diameter that is at least the casing diameter twice, and occupies the part on the surface of molten aluminum; And
Wherein, dispose and make this container like this, that is: make it to limit bottom surface and sidewall, described sidewall is spent to the angles of 16 degree with about 5 and is upwards dispersed, so that allow air bubble expansion, can not reduce metallostatic pressure and coalescent significantly along with bubble upwards moves in melt,
Described molten aluminum refining equipment is characterized in that:
Described axle further is provided with at least one straight trough in its surface, and this straight trough is parallel with the axis of described axle, and is formed by two flat surfaces, and wherein, a plane and another plane are provided with angledly.
2. equipment as claimed in claim 1, wherein, described axle forms a spiral slot that limits the refining gas passage at least therein.
3. equipment as claimed in claim 2, wherein, described stator swims on the immobilized molten aluminum, and when rotor was in the operation speed of rotation, described stator was suspended in the molten aluminum.
4. equipment as claimed in claim 3, wherein, wall of a container is upwards dispersed with the clean angle of divergence that makes progress of about 11 degree.
5. equipment as claimed in claim 2, wherein, wall of a container is upwards dispersed with the clean angle of divergence that makes progress of about 11 degree.
6. equipment as claimed in claim 1, wherein, stator swims on the immobilized molten aluminum, and when rotor was in the operation speed of rotation, described stator was suspended in the molten aluminum.
7. equipment as claimed in claim 6, wherein, wall of a container is upwards dispersed with the clean angle of divergence that makes progress of about 11 degree.
8. equipment as claimed in claim 1, wherein, wall of a container is upwards dispersed with the clean angle of divergence that makes progress of about 11 degree.
9. equipment as claimed in claim 1, wherein, described angle is in 70 ° to 120 ° scope.
10. equipment as claimed in claim 9, wherein, plane has the width in 0mm to the 3.0mm scope, and another planar width is bigger 15 times than a described planar width at least.
11. equipment as claimed in claim 10, wherein, one of described plane has the width in the scope of 0.8mm to 2.6mm.
12. equipment as claimed in claim 10, wherein, one of described plane has the width in the scope of 1mm to 1.5mm.
13., wherein, on the surface of described axle, two described straight troughs are set as any one described equipment among claim 1, the 9-12.
14. a molten aluminum refining equipment comprises: the container that is used for keeping molten aluminum at refining process; At least one is arranged on the gas distribution mechanism in the container, and described distributor gears comprises the rotatable shaft that extends through cylinder-shaped sleeve, and described axle is attached on the driving mechanism in the top, is connected on the rotor in its lower end; And the mechanism of the passage of refining gas is carried in qualification to rotor, it is characterized in that, the floating stator shape of falling the frustum, reeded, that can move freely that described molten aluminum refining equipment comprises, it is the diameter of described casing diameter twice at least that described stator has, and this stator centers on described sleeve pipe and occupies the part on the surface of molten aluminum.
15. equipment as claimed in claim 14, wherein, described stator swims in aluminium in the immobilized fusion, and when rotor was in operating speed, described stator was suspended in the molten aluminum.
16. a molten aluminum refining equipment comprises: the container that is used for keeping molten aluminum at refining process; At least one is arranged on the gas distribution mechanism in the container, described distributor gears comprises the rotatable shaft that extends through cylinder-shaped sleeve, described axle is attached on the driving mechanism in the top, be connected on the rotor in its lower end, described distributor gears also comprises the mechanism of qualification to the passage of rotor conveying refining gas, wherein, the mechanism that limits the refining gas passage comprises the described axle that forms groove in its surface, described groove limits gas flow path, the length of this gas flow path is greater than the length of axle, the internal surface of cylinder-shaped sleeve further limits described refining gas passage, the structure of this passage is, make processing gas and cylinder-shaped sleeve expose bigger surface area mutually, thereby allow bigger heat passage, dispose and make described rotor and sleeve pipe like this, that is: make it to limit described passage, be used for when the gas flow rotor by contacting gas heating to temperature near melt with sleeve pipe; And, the floating stator of the shape of falling the frustum that have groove, can move freely, this stator has the diameter that is at least the casing diameter twice, and occupies the part on the surface of molten aluminum,
Described molten aluminum refining equipment is characterized in that,
Described axle further is provided with at least one straight trough in its surface, and this straight trough is parallel with the axis of described axle, and is formed by two flat surfaces, and wherein, a plane and another plane are provided with angledly.
17. equipment as claimed in claim 16, wherein, stator swims on the immobilized molten aluminum, and when rotor was in the operation speed of rotation, described stator was suspended in the molten aluminum.
18. equipment as claimed in claim 16, wherein, dispose and make this container like this, that is: make it to limit bottom surface and sidewall, described sidewall is upwards dispersed with the angle of about 11 degree, so that the permission air bubble expansion, and can not reduce metallostatic pressure and coalescent significantly in melt along with bubble upwards moves
19. equipment as claimed in claim 16, wherein, described angle is in 70 ° to 120 ° scope.
20. equipment as claimed in claim 16, wherein, plane has the width in 0mm to the 3.0mm scope, and another planar width is bigger 15 times than a described planar width at least.
21. equipment as claimed in claim 20, wherein, one of described plane has the width in the scope of 0.8mm to 2.6mm.
22. equipment as claimed in claim 20, wherein, one of described plane has the width in the scope of 1mm to 1.5mm.
23., wherein, on the surface of described axle, two described straight troughs are set as any one described equipment among claim 16, the 19-22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129435 CN200974860Y (en) | 2006-07-10 | 2006-07-10 | Molten aluminum refining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129435 CN200974860Y (en) | 2006-07-10 | 2006-07-10 | Molten aluminum refining equipment |
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| Publication Number | Publication Date |
|---|---|
| CN200974860Y true CN200974860Y (en) | 2007-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620129435 Expired - Lifetime CN200974860Y (en) | 2006-07-10 | 2006-07-10 | Molten aluminum refining equipment |
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| CN (1) | CN200974860Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104888B (en) * | 2006-07-10 | 2011-03-30 | R·V·提拉克 | Molten aluminum refining equipment |
| CN105940125A (en) * | 2013-11-18 | 2016-09-14 | 南线有限责任公司 | Ultrasonic probes with gas outlets for degassing of molten metals |
| US10640846B2 (en) | 2010-04-09 | 2020-05-05 | Southwire Company, Llc | Ultrasonic degassing of molten metals |
| CN115074536A (en) * | 2022-07-06 | 2022-09-20 | 栋梁铝业有限公司 | A high-efficient adsorption purification equipment for regenerating aluminum alloy fuse-element |
-
2006
- 2006-07-10 CN CN 200620129435 patent/CN200974860Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104888B (en) * | 2006-07-10 | 2011-03-30 | R·V·提拉克 | Molten aluminum refining equipment |
| US10640846B2 (en) | 2010-04-09 | 2020-05-05 | Southwire Company, Llc | Ultrasonic degassing of molten metals |
| CN105940125A (en) * | 2013-11-18 | 2016-09-14 | 南线有限责任公司 | Ultrasonic probes with gas outlets for degassing of molten metals |
| US10316387B2 (en) | 2013-11-18 | 2019-06-11 | Southwire Company, Llc | Ultrasonic probes with gas outlets for degassing of molten metals |
| CN115074536A (en) * | 2022-07-06 | 2022-09-20 | 栋梁铝业有限公司 | A high-efficient adsorption purification equipment for regenerating aluminum alloy fuse-element |
| CN115074536B (en) * | 2022-07-06 | 2023-10-27 | 栋梁铝业有限公司 | A high-efficient adsorption clarification plant for regenerating aluminum alloy fuse-element |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20071114 Effective date of abandoning: 20060710 |