CN1544667A - Method for purifying molten non-ferrous metal and equipment therefor - Google Patents
Method for purifying molten non-ferrous metal and equipment therefor Download PDFInfo
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- CN1544667A CN1544667A CNA2003101123528A CN200310112352A CN1544667A CN 1544667 A CN1544667 A CN 1544667A CN A2003101123528 A CNA2003101123528 A CN A2003101123528A CN 200310112352 A CN200310112352 A CN 200310112352A CN 1544667 A CN1544667 A CN 1544667A
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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
- C22B9/04—Refining by applying a vacuum
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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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Abstract
The invention is a non-ferrous metal melt purifying method and device, the method mainly including: using the purifying bubbles of nitrogen gas as main purifying gas to pass through the non-ferrous melt from bottom to top, so as to absorb hydrogen and harmful impurities on the way and carry them to the top of the metal melt, and its characteristic: the method also includes the steps as follows: a, the purifying bubbles form seething spoondrift on the top of the metal melt; b, vacuumize the top of the metal melt to form 0.1-10 torr vacuum negative pressure, by the seething surface of the metal melt, making dynamical vacuum purification on the hydrogen and impurities; c, controlling the flowing direction of the metal melt to make dynamical vacuum purification on all the metal melt in the top seething spoondrift. It also includes the device using the method. It can enhance purifying efficiency and by a large margin reduces the production cost, easy to operate and apply to industry.
Description
Technical field
The present invention relates to the method for purification and the equipment of molten non-ferrous metal, particularly relate to vacuum purification method and equipment that a kind of main dependence dynamic vacuum purifying treatment realizes that molten non-ferrous metal purifies.
Background technology
Up to last century end, non-ferrous metal purifying method and equipment, no matter be at home or abroad, no matter be the U.S., still Europe; No matter be ALPUR, or SNIF or nearest ACD, the method that mostly adopts bubbles of purge gas to adsorb.When using these methods or equipment to carry out purifying treatment, because the molten metal headspace is not a vacuum, contain aerobic and comprise hydrogen at interior waste gas, be covered with on the molten metal surface and produce in the melting process, or purify oxidation sludge and other detrimental impurity that bubble is brought up in the scavenging process, and, because the airtight or semi closed in its space, along with proceeding of purifying treatment, its concentration is more and more higher, and pressure is also increasing.If molten metal surface produces the spray, just make the molten metal surface that has enlarged must increase the chance that contacts with the above-mentioned waste gas that comprises hydrogen, make their counter dissolving in the molten metal; Its disruptive oxidized surface makes molten metal itself contact with oxygen, continues oxidation, produces new oxidation sludge; And the spray that rolls, also will inevitably be suspended in the molten metal surface be mingled with and the molten metal headspace comprises hydrogen and is involved in the molten metal at interior waste gas, not only worsen decontamination effect improving, metal loss also can be very serious, this is by experiment with detect and confirmed.So traditional purifying method all requires the molten metal surface steadily, prevents the spray.
The rotor-injection method of purification that last century Mo occurs, as above-mentioned ALPUR, SNIF, ACD etc., no matter its rotor shapes is how, they all have a common characteristic, be exactly in scavenging process, its molten metal surface is all very steady, does not have the spray.The rotor-injection method has improved the purification level of Purge gas absorption method, this is because no matter the jet power of the purification bubble of rotor-injection method has much, also all can consume on the Plane of rotation of the rotor that is horizontal, even its bubble is big again, also all can be cut into atomic little rill, when they go up the Metal Melting liquid level, be tending towards tranquil by rotor, so, the surface of molten metal does not steadily have wave naturally, has only slight rocking.This method is all as main points, and is popular for the America and Europe.
But in order to improve purification efficiency, aforesaid method requires to add chlorine in purified gas, or contains the chemical agent of chlorine or fluorine, carries out chemisorption.These methods also require to sprinkle the insulating covering agent that one deck contains chlorine or fluorine on the molten metal surface, and its purpose is exactly to think contacting of surface that isolated molten metal rocks and oxygen, prevents to reoxidize the minimizing metal loss.But these chemical agents and chlorine all are harmful to human health and environment, do not meet environmental protection requirement.
Someone uses the method for vacuum to carry out purifying treatment, has staticly, also has dynamically, and its advantage is compliance with environmental protection requirements.Though the vacuum purification method is splendid to the purification efficiency of molten metal upper layer, and to the deep layer molten metal what for little, so static vacuum-treat also fails to use in industry so far.A kind of dynamic vacuum processing method is reach certain vacuum in the vacuum-treat stove after, and metal injection liquation in vacuum oven forms fine drop, and institute's hydrogen and oxidation impurities are separated out rapidly, and sodium wherein is combustion by evaporation also.But this kind method is still failed industrialization so far.
Last century end, the beginning of this century, the America and Europe has the people to use the method that vacuumizes when using purified gas that molten metal is carried out purifying treatment.As the patent No. is US5340379A, and name is called the disclosed method of purification of Jet flow devicefor injecting gas into molten metal and process, and this method has added in the program of spraying purified gas and cleaning of substances and vacuumizes.But, it vacuumizes and only is used for transporting molten metal to storing chamber (reservoir chamber) from smelting furnace (furnace chamber), and then with positive pressure (positive pressure), molten metal is sent into smelting furnace from storing chamber, each cycle 10-15 second.When being pressed into smelting furnace from storing chamber through carrying the duct under the effect of molten metal in positive pressure, be loaded on and carry the pyramid type ozzle of cell ends to eject Purge gas and cleaning of substances, this molten metal is carried out purifying treatment.In the reason process, do not vacuumize and directly have an effect herein, promptly this purifying treatment itself in fact only finish by being loaded on by Purge gas that the pyramid type ozzle of carrying the duct ejects and cleaning of substances, vacuumizes and do not participate in this purifying treatment directly.
The patent No. is EP1081240A1, and name is called the disclosed method of purification of Stirrer equipment for the continuoustreatment of liquid metal patent and has adopted in the decontamination chamber and vacuumize.The special emphasis of this purifying treatment is at agitator (stirrer), when this method uses rotor (ROTOR) to spray Purge gas and purification particulate, its spraying pressure is very big, be about 200bar, but all consume on the Plane of rotation of rotor, be cut into microvesicle and purify bubble, when going up the molten metal top, they have been tending towards tranquil, the molten metal top does not steadily have wave, has only slight rocking, and the purifying treatment that the vacuum of its decontamination chamber is carried out belongs to static vacuum-treat.Its decontamination effect improving is that bubbles of purge gas purifies and the addition of static vacuum purification effect.One of advantage of this method is, when the decontamination chamber is in vacuum, will influence the balance of molten metal and upper space vapour pressure, makes that sodium and the hydrogen in the molten metal is separated out easily; Two of advantage is, the molten metal water level in the reaction chamber is improved, and purifies distance thereby increase, and Purge gas is filled part to be utilized; Three of advantage is to vacuumize and can reduce slag; Four of advantage is to vacuumize and can reduce dust.Yet above-mentioned advantage is general vacuum-treat or static treatment all to be had, and they fail to bring into play the vacuum purification advantage special good to top layer molten metal effect, and the negative pressure of vacuum of this method is minimum to be 0.2bar (at least 0.2bar).In order to improve its detergent power, this method also will be used the purification particulate except that using purified gas, carry out chemisorption, improves purification efficiency, and obviously, this method also has its tangible limitation.
Summary of the invention
When the present invention is intended to solve in traditional molten non-ferrous metal method of purification existing environmental issue, further improve the purification efficiency of molten metal, reduce production costs significantly, and easy handling and in industrial application, and the molten non-ferrous metal method of purification that provides a kind of new dynamic vacuum to handle.
The present invention also aims to provide the equipment of this method of realization.
For achieving the above object, the invention provides a kind of molten non-ferrous metal method of purification, this method comprises that use is that the purification bubble of main purified gas from bottom to top passes molten non-ferrous metal with nitrogen, adsorb hydrogen and detrimental impurity in the molten metal on the way, they are taken to the top of molten metal, it is characterized in that this method also comprises the steps:
A, form the spray that rolls up and down and jump at the molten metal top with the purification bubble of hydrogen and detrimental impurity;
B, vacuumize, form the negative pressure of vacuum of 0.1～10 holder, turn over the molten metal top layer that jumps, the hydrogen in the molten metal and detrimental impurity are carried out dynamic vacuum purification handle by the spray at the molten metal headspace;
The flow direction of c, control molten metal makes all molten metals can both carry out dynamic vacuum purification in the spray at molten metal top and handles.
The flow direction control of molten metal is that molten metal is flowed into the round tube type decontamination chamber from the inlet of being located on decontamination chamber's cylindrical wall tangent line, at first inhaled high by negative pressure of vacuum, in the spray that the purification bubble evokes, carry out the dynamic vacuum purifying treatment, along the rotation of the cylindrical wall of decontamination chamber and descend, carry out the purifying treatment that eddy current is centrifugal and the purification bubble absorption combines then.
The control of the flow direction of molten metal be with molten metal under the high-order flashboard and the control of low level flashboard for the treatment of plant, heaving and dipping, undulate flows to forward, makes all molten metals can both be raised to low level flashboard top, carries out the dynamic vacuum purifying treatment in the spray that the purification bubble evokes.
The flow direction control of molten metal is by circulative convection about the two-way agitator for the treatment of plant with molten metal, purified gas is injected in the molten metal by pipeline, along with the molten metal of convection current, swash the foam of breaking waves at the molten metal top, carry out dynamic vacuum purification and handle.
Treating plant is made of decontamination chamber and cleaning chamber, the decontamination chamber is round tube type, on its cylindrical wall tangential direction, be provided with the molten metal inlet, the bottom, decontamination chamber is provided with the purified gas scatterer, cylindrical wall bottom one side links to each other with cleaning chamber by secret tunnel, and cylindrical wall bottom opposite side is provided with upper and lower two tap holes.
Treating plant is made of purification tank and purification cover, wherein, is circular-arc at the bottom of the purification tank, the fixedly embedded bar-shaped purified gas scatterer in the cell body both sides; The purification cover bottom articulates a plurality of high-order flashboards and low level flashboard, and purification cover is provided with vacuum cap, by it treating plant is linked to each other with vacuum unit.
Treating plant is by the molten tool or the carrier of molten metal and place the purification cover at molten tool or carrier top to constitute, purification cover then comprises two-way agitator and vacuum cap, wherein two-way agitator is contained in the agitator cover body, vacuum cap is connected in two-way whip topping, and treating plant links to each other with vacuum unit by vacuum cap.
It is cylindric that agitator is, and it comprises stirs pump and following stirring pump, and the pawl of two stirring pumps is on the contrary, and link to each other by pipe core, on stir the sprocket hole that pump is provided with the conveying purified gas.
Contribution of the present invention is that it provides a kind of dynamic vacuum purification method that molten metal purifies that is used for.Visibly different with traditional purifying treatment method is that method of the present invention requires to produce the spray on the molten metal surface in decontamination process.Because in this decontamination process, the molten metal headspace vacuumizes, and the there does not have oxygen, can not make liquid metal continue oxidation, also can make the oxidation sludge that is mixed with hydrogen restore pure metal.The waste gas that contains hydrogen is just separated out from molten metal, promptly taken away, so, needn't worry that they can instead dissolve in the molten metal.When the molten metal surface has the spray to roll, needn't worry to have hydrogenous waste gas and oxide inclusion to be involved in the molten metal.On the contrary, according to the solubleness principle, hydrogen is inevitable to be transferred in the lower vacuum of solubleness by the high molten metal of solubleness.The more important thing is, the negative pressure of vacuum of molten metal headspace not only can siphon away the waste gas that comprises hydrogen and oxidation sludge in this space, hydrogen and oxide inclusion in also can the sucking-off molten metal, those countless big and small sprays weaken or destroy the surface tension and the formed resistance thereof of molten metal, make molten metal Central Plains existing, and it is easier of the negative pressure of vacuum sucking-off to purify bubble adsorbed detrimental impurity and hydrogen on the way.
The most important thing is that because vacuum purification is handled a very important characteristic is arranged, promptly it is splendid to the purification efficiency on molten metal top layer, but to the purification efficiency of molten metal deep layer extreme difference then, distance is big more, effect is little more.Method of the present invention requires to produce the spray and has given full play to the vacuum attraction advantage good to the purification efficiency on molten metal top layer.Because the spray has shortened hydrogen in the molten metal and the various detrimental impurity distance to the molten metal surface, under vacuum condition, promptly is to shorten it by the distance of negative pressure of vacuum sucking-off; The surface-area of spray enlarged metal liquation, under vacuum condition, be exactly the enlarged metal liquation in a vacuum by the surface-area of negative pressure of vacuum sucking-off, increase the passage that it is sucked out.Hydrogen in the deep layer molten metal and various harmful being mingled with when then being risen in molten metal by the purification bubble, absorption on the way is in their sprays with last molten metal top.In scavenging process, vacuum purification attracts and purifies bubble absorption both to divide the work, and cooperates again, and there have the master to have to be auxilliary, supplements and complements each other, and carries out dynamic vacuum purification and handle, and makes the purification efficiency of purifying treatment and decontamination effect improving produce qualitative leap.Can affirm that if there is not the spray, its purification efficiency will be had a greatly reduced quality.This also is the place of vacuum treated feature of the present invention and marrow, also is that it and the general Purge gas of using simultaneously stir and the method for purification of static vacuum such as the difference place of US5340379 and EP1081240A1.
Because top that the purification function of this method mainly relies on molten metal to be full of the spray is carried out dynamic vacuum purification and is handled and finish, the purification bubble that the diffusion rod of bottom, decontamination chamber ejects is in order to adsorb the hydrogen in the deep layer molten metal and to be mingled with, with swash the foam of breaking waves at the molten metal top, needed Purge gas supply pressure needn't be too big, generally only be 4bar, and EP1081240A carries out purifying treatment because of the main rotor-injection purification bubble that relies on, thereby needing the supply pressure of use up to 200bar, the two differs 50 times.In this decontamination process, its vacuum negative pressure is 10 holders-0.1 holders, and 1 holder is for good.This enough promotes the molten metal in the decontamination chamber, hydrogen in the spray of sucking-off molten metal top and harmful being mingled with.And the required negative pressure of vacuum of the patented method of EP1081240A1 minimum be 0.2bar, method more of the present invention exceeds more than hundred times.Lower negative pressure of vacuum and lower purified gas supply pressure make the making of method of the present invention and production cost to reduce significantly, also easy handling.Therefore the method for purification of the present invention is more competitive.
But it still is not enough only producing the spray at the molten metal top, also must make all molten metals all be subjected to negative pressure of vacuum equally and closely purify and attract just meaningfully, just can be converted into productivity, is put to industrial application.Because if do not control the flow direction of molten metal well, have only just partly that molten metal obtains the dynamic vacuum purifying treatment, most molten metal then can not get this processing.The special emphasis of the method for purification of the present invention carried out orderly control to the flow direction of molten metal, can both be subjected to purifying treatment equably in the spray on molten metal top to guarantee all molten metals.The control method that flows to of multiple molten metal of the present invention makes the molten metal each several part can both obtain dynamic vacuum purifying treatment comprehensively and uniformly in the molten metal surface and the spray thereof.
Description of drawings
Fig. 1 is the treating plant structural representation of embodiments of the invention 1, and wherein Figure 1A is an elevational cross-sectional view, and Figure 1B is a vertical view, and Fig. 1 C is a side view cutaway drawing.
Fig. 2 is treating plant structural representation under non-purification state of embodiments of the invention 2, and wherein Fig. 2 A is a side view cutaway drawing, and Fig. 2 B is an elevational cross-sectional view.
Fig. 3 is treating plant structural representation under the purification state of embodiments of the invention 2, and wherein Fig. 3 A is a side view cutaway drawing, and Fig. 3 B is an elevational cross-sectional view.
Fig. 4 is the treating plant structural representation of embodiments of the invention 3, and wherein Fig. 4 A is the two-way agitator structure synoptic diagram for the treatment of plant, and Fig. 4 B is that agitator clockwise rotates view, and Fig. 4 C is that agitator rotates counterclockwise view.
Embodiment
Embodiment 1
This embodiment is the example of the vortex centrifugal method of purification of the present invention.
Generally must be in device when non-purification state the storage molten metal.When molten metal purifies, molten metal flows into the decontamination chamber from decontamination chamber's inlet 111, when in molten metal, rising, adsorb oxidation impurities and hydrogen in the molten metal on the way, and swash the foam of breaking waves at the molten metal top by the bottom purified gas diffusion rod 113 purification bubbles that eject.When vacuum pump started, molten metal was taken out height, and negative pressure of vacuum is carried out dynamic purifying treatment to the spray, impurity in the sucking-off molten metal and hydrogen.Spiral and descend along cylinder inner wall through the spray vacuum treated molten metal, produce eddy current centrifugal force, the molten metal that quality is bigger is fallen to the periphery, the hydrogen of lighter weight and oxide inclusion then are pressed against the center of eddy current, and the purification bubble that is ejected by bottom diffusion rod is with the molten metal top to them again.Through purifying treatment, centrifugal through the eddy current again molten metal with the cleaning that purifies the bubble absorption combination treatment then enters cleaning chamber by bottom, decontamination chamber secret tunnel, and the outlet through cleaning chamber enters casting system again.Another effect of the eddy current that spirals of molten metal is the purification distance that has prolonged molten metal, and the vortex sheet of the eddy current that spirals and the nitrogen bubble ascent direction is several meets at right angles has all strengthened purification efficiency and decontamination effect improving.
The equipment of realizing aforesaid method is illustrated by Fig. 1, Fig. 2, the vortex centrifugal treating plant is made of decontamination chamber 11 and cleaning chamber 12, the decontamination chamber is a round tube type, molten metal inlet 111 is located on the tangent line of decontamination chamber's top cylinder wall, the cylindrical wall bottom is provided with secret tunnel 112 and links to each other with cleaning chamber 12, and cylindrical wall bottom opposite side is provided with dewatering outlet 114 up and down.The bottom, decontamination chamber is embedded with purified gas diffusion rod 113, and the diffusion rod is made with graphite or other refractory materials, and there is a slotted hole at excellent center, and excellent body is full of thickly dotted fine aperture.The top, decontamination chamber has purification cover 13, purification cover to be provided with vacuum cap 131, calrod 132, sight glass 133, vacuum meter 134, links to each other with vacuum extractor by vacuum cap.Cleaning chamber top is provided with liquid outlet 121, and the molten metal that purified flows into casting device by this liquid outlet.Cleaning chamber top has cleaning chamber cover 14, cleaning chamber to be covered with calrod 141, sight glass 143, vacuum meter 144, can also load onto vacuum cap 142 link to each other with vacuum unit (depending on the needs).
Embodiment 2
This embodiment is the example of the wave method of purification of the present invention.
This method needn't store molten metal in device when the non-purification of molten metal, when molten metal purifies, because the liquation inlet is close to bottom land, the oxide inclusion of lighter weight and hydrogen have the tendency of come-up, when molten metal flows in chute, before these oxide inclusions promptly are blocked in the flashboard 212 of inlet top.After molten metal enters first storehouse, upwards climb along first road flashboard-low level flashboard 225, oxide inclusion in the molten metal and hydrogen have the tendency that is extruded, when the purification bubble that two bottom sides purified gas diffuser tube comes out rises, adsorb these hydrogen on the way and be mingled with, they are with the molten metal top, and evoke the countless big and small sprays there, carry out dynamic purification and handle.Processed molten metal descends in second storehouse, flow into the foot passage of the second road flashboard-high flashboard 224, and oxidation sludge in the aluminium liquid and hydrogen, because the relation of buoyancy, the tendency of separating out is dorsad arranged, the purification bubble of being climbed sharply up by the bottom again is adsorbed, is with aluminium liquid top to carry out dynamic purification and handles.Molten metal is in the 3rd storehouse and the 4th storehouse, and purifying treatment as in first storehouse and second storehouse, is carried out in the 5th storehouse and the 6th storehouse.On these four times three, the absorption of the nitrogen bubble of six road different directions, three dynamic vacuum vacuum suctions must make its purification efficiency and decontamination effect improving produce qualitative leap.
The equipment of realizing this method is illustrated by Fig. 3, and this treating plant is made of purification tank 21 and purification cover 22.The purification tank bottom is circular-arc, and both sides are embedded with Purge gas diffusion rod 211 at the bottom of the arc, and spreading excellent center has a slotted hole, and excellent body is full of fine and closely woven micropore.The two ends of groove are respectively the entrance and exit of molten metal, and bottom land is close in the gangway, are surrounded by the bottom land of circular arc type and the flashboard 212 on top.Sight glass 222, vacuum pressure gauge 22 3, vacuum cap 221 are housed on the purification cover, and the purification cover bottom hangs high-order flashboard 224 and low level flashboard 225.The flashboard number be decided on the length and concrete needs of groove, and minimum one (low level flashboard) is generally 5, and be certainly more.This treating plant links to each other with vacuum extractor by vacuum cap.
Embodiment 3
This embodiment is the example of the convection type method of purification of the present invention.
This method is by circulative convection about the two-way agitator for the treatment of plant with molten metal.Shown in Fig. 4 B, when agitator clockwise rotated, molten metal flowed into from last stirring pump 311, and the molten metal outside pipe core 313,312 ejections of following stirring pump and agitator forms circulation.Shown in Fig. 4 C, when agitator rotated counterclockwise, molten metal flowed into from bottom agitator 312, through pipe core 313, on the molten metal that stirs outside pump 311 ejections and the agitator form another circulation.Molten metal produces convection current up and down in circulation.There is the pore 314 of a thin diameter at agitator head center, links to each other with last agitator.Purified gas enters from this tubule hole, injects in the molten metal through stirring pump again, produces bubble, and oxide inclusion and hydrogen in the absorption molten metal are with the molten metal top, along with the molten metal of convection current, produce the countless big and small sprays.When space formation vacuum was gone up on the molten metal top, this negative pressure of vacuum was promptly carried out dynamic purifying treatment to these sprays.
The equipment of realizing this method is shown in Fig. 4 A-Fig. 4 C, and this treating plant is the pole type, is made by refractory materials, it comprises stirs pump 311 and following stirring pump 312, the pawl of two stirring pumps is on the contrary, and links to each other by pipe core 313, on stir pump and be provided with the sprocket hole 314 of carrying purified gas.Two-way agitator and vacuum cap constitute vacuum (-tight) housing, and agitator connects the purified gas feeding mechanism by the head thin diameter tube, and vacuum cap links to each other with vacuum extractor.Sight glass is housed, calrod on the vacuum (-tight) housing.Vacuum (-tight) housing can cover on various stove and accessory and the molten metal carrier, forms enclosed space, carries out purifying treatment.The array configuration of vacuum (-tight) housing and stove and accessory or carrier is varied.Can the two be combined into one, also can be separately independent separately; The molten metal stove and accessory is fixed, and mobile vacuum (-tight) housing goes with regard to stove and accessory, and vacuum (-tight) housing is fixed, and mobile carrier goes with regard to vacuum (-tight) housing.These combinations are mainly used in discontinuous casting, but also can be used for continuous casting.
Claims (8)
1, a kind of molten non-ferrous metal method of purification, comprise that use is that the purification bubble of main purified gas from bottom to top passes molten non-ferrous metal with nitrogen, adsorb hydrogen and detrimental impurity in the molten metal on the way, they are taken to the top of molten metal, it is characterized in that this method also comprises the steps:
A, form the spray that rolls up and down and jump at the molten metal top with the purification bubble of hydrogen and detrimental impurity;
B, vacuumize, form the negative pressure of vacuum of 0.1～10 holder, turn over the molten metal top layer that jumps, the hydrogen in the molten metal and detrimental impurity are carried out dynamic vacuum purification handle by the spray at the molten metal headspace;
The flow direction of c, control molten metal makes all molten metals can both carry out dynamic vacuum purification in the spray at molten metal top and handles.
2, the molten non-ferrous metal method of purification according to claim 1, it is characterized in that, the flow direction control of molten metal is that molten metal is flowed into the round tube type decontamination chamber from the inlet of being located on decontamination chamber's cylindrical wall tangent line, at first inhaled high by negative pressure of vacuum, in the spray that the purification bubble evokes, carry out the dynamic vacuum purifying treatment, along the rotation of the cylindrical wall of decontamination chamber and descend, carry out the purifying treatment that eddy current is centrifugal and the purification bubble absorption combines then.
3, the molten non-ferrous metal method of purification according to claim 1, it is characterized in that, the control of the flow direction of molten metal be with molten metal under the high-order flashboard and the control of low level flashboard for the treatment of plant, heaving and dipping, undulate flows to forward, make all molten metals can both be raised to low level flashboard top, in the spray that the purification bubble evokes, carry out the dynamic vacuum purifying treatment.
4, the molten non-ferrous metal method of purification according to claim 1, it is characterized in that, the flow direction control of molten metal is by circulative convection about the two-way agitator for the treatment of plant with molten metal, purified gas is injected in the molten metal by pipeline, molten metal along with convection current, swash the foam of breaking waves at the molten metal top, carry out dynamic vacuum purification and handle.
5, a kind of equipment of realizing the described method of purification of claim 1, it is characterized in that, treating plant (10) is made of decontamination chamber (11) and cleaning chamber (12), the decontamination chamber is round tube type, on its cylindrical wall tangential direction, be provided with molten metal inlet (111), the bottom, decontamination chamber is provided with purified gas scatterer (113), and cylindrical wall bottom one side links to each other with cleaning chamber (12) by secret tunnel (112), and cylindrical wall bottom opposite side is provided with upper and lower two tap holes (114).
6, a kind of equipment of realizing the described method of purification of claim 1 is characterized in that, treating plant (20) is made of purification tank (21) and purification cover (22), wherein, is circular-arc at the bottom of the purification tank, the fixedly embedded bar-shaped purified gas scatterer (211) in the cell body both sides; The purification cover bottom articulates a plurality of high-order flashboards (224) and low level flashboard (225), and purification cover is provided with vacuum cap (221), by it treating plant is linked to each other with vacuum unit.
7, a kind of equipment of realizing the described method of purification of claim 1, it is characterized in that, treating plant is by the molten tool or the carrier (40) of molten metal and place the purification cover (30) at molten tool or carrier top to constitute, purification cover then comprises two-way agitator (31) and vacuum cap (32), wherein two-way agitator is contained in the agitator cover body, vacuum cap is connected in two-way whip topping, and treating plant links to each other with vacuum unit by vacuum cap.
8, equipment according to claim 7, it is characterized in that, described agitator (31) is cylindric, it comprises stirs pump (311) and following stirring pump (312), the pawl of two stirring pumps is on the contrary, and link to each other by pipe core (313), on stir pump and be provided with the sprocket hole (314) of carrying purified gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101123528A CN100374591C (en) | 2003-11-24 | 2003-11-24 | Method for purifying molten non-ferrous metal and equipment therefor |
| PCT/CN2004/001291 WO2005049874A1 (en) | 2003-11-24 | 2004-11-12 | A method for vacuum purifying molten non-ferrous metal are described |
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| CNB2003101123528A CN100374591C (en) | 2003-11-24 | 2003-11-24 | Method for purifying molten non-ferrous metal and equipment therefor |
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| CN1544667A true CN1544667A (en) | 2004-11-10 |
| CN100374591C CN100374591C (en) | 2008-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108165757A (en) * | 2018-02-08 | 2018-06-15 | 黄德盛 | A kind of modified molten non-ferrous metal purifier and purification method |
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| US8030082B2 (en) | 2006-01-13 | 2011-10-04 | Honeywell International Inc. | Liquid-particle analysis of metal materials |
| CN102719680A (en) * | 2012-06-21 | 2012-10-10 | 重庆硕龙科技有限公司 | Purification method for light metal and alloy melt thereof |
| CN115094188A (en) * | 2022-08-25 | 2022-09-23 | 大峘集团有限公司 | Molten iron desulphurization slag removing machine transformation device and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5091000A (en) * | 1987-12-25 | 1992-02-25 | Nkk Corporation | Method for cleaning molten metal and apparatus therefor |
| RU2139363C1 (en) * | 1998-03-25 | 1999-10-10 | Открытое акционерное общество "Новосибирский завод химконцентратов" | Method and installation for refining lithium |
| JP2001294949A (en) * | 2000-04-07 | 2001-10-26 | Kobe Steel Ltd | Continuous method for vacuum refining molten metal and apparatus therefor |
| CN1224724C (en) * | 2001-10-30 | 2005-10-26 | 黄德盛 | Method for cleaning molten non-ferrous metal and its equipment |
-
2003
- 2003-11-24 CN CNB2003101123528A patent/CN100374591C/en not_active Expired - Fee Related
-
2004
- 2004-11-12 WO PCT/CN2004/001291 patent/WO2005049874A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165757A (en) * | 2018-02-08 | 2018-06-15 | 黄德盛 | A kind of modified molten non-ferrous metal purifier and purification method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005049874A1 (en) | 2005-06-02 |
| CN100374591C (en) | 2008-03-12 |
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