CN1224724C - Method for cleaning molten non-ferrous metal and its equipment - Google Patents
Method for cleaning molten non-ferrous metal and its equipment Download PDFInfo
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- CN1224724C CN1224724C CN 01129841 CN01129841A CN1224724C CN 1224724 C CN1224724 C CN 1224724C CN 01129841 CN01129841 CN 01129841 CN 01129841 A CN01129841 A CN 01129841A CN 1224724 C CN1224724 C CN 1224724C
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Abstract
The present invention relates to a method for cleaning molten non-ferrous metal and equipment for the method. The method comprises: enabling cleaning gas to penetrate through molten non-ferrous metal from bottom to top for adsorption cleaning; the method is characterized in that vacuum is pumped above the molten non-ferrous metal in the adsorption cleaning process of the gas so as to carry out the negative pressure suction of the molten non-ferrous metal; the equipment is composed of a non-ferrous metal cleaning device and a vacuum device, wherein the vacuum device is connected with the space above the molten non-ferrous metal in the non-ferrous metal cleaning device, and the non-ferrous metal cleaning device can be in a single-chamber structure, a multichamber structure or a non-chamber structure. The cleaning method of the present invention not only enables the cleaning treatment of molten non-ferrous metal to meet the requirements for environmental protection but also achieves the purpose of high efficiency, energy saving and low consumption, and the cleaning equipment of the present invention realizes the easy implement of the method.
Description
Technical field
The present invention relates to the purifying method of molten non-ferrous metal, particularly relate to a kind of for removing impurity such as the objectionable impuritiess such as hydrogen and oxide compound in the aluminium liquid melted, aluminium liquid is purified, make the quality of foundry goods and the purification of the guaranteed aluminum metal liquation of performance refine method, and the equipment for realizing that this method of purification designs.
Background technology
Aluminium alloy can suck hydrogen in melting process, also can oxidation generate the aluminum oxide slag, if these hydrogen and aluminum oxide slag will not be removed, defect such as pore, slag inclusion may appear in foundry goods, must be to the performance of goods, and intensity, even outward appearance produces adverse influence.Therefore, behind the aluminum alloy melting, must carry out purifying treatment, remove deleterious impurity, reduce hydrogen richness, could obtain purified molten metal, the quality of foundry goods and performance are just guaranteed.
Traditional treatment process is that directly the bottom of the aluminium liquid in smelting furnace feeds Purge gas such as nitrogen, argon gas, chlorine or refining agent, when the purification bubble that produces makes progress buoyance lift, the impurity in the aluminium liquid is caught in absorption on the way, comprise hydrogen and oxidation sludge, they are with aluminium liquid surface, hydrogen is overflowed from aluminium liquid surface, and oxidation sludge is raked off outside the stove.This method efficient is low, inhomogeneous, and labour intensity is also very big.In order to improve decontamination effect improving, make aluminium liquid obtain handling thoroughly and uniformly, relevant treating plant arises at the historic moment.More famous, there is FILD in Britain, and there is ALPUR in France, and there is HM-MAXIJET in Germany, and there is ALCOA in the U.S., SNIF, PAL or the like.
No matter be FILD or SNIF, also no matter be HM-MAXIJET, ALPUR or PAL, they have a common ground, are exactly all to adopt traditional treatment process, feed nitrogen to aluminium liquid bottom, chlorine, gases such as argon form big and small bubble, absorption is suspended in hydrogen and the impurity in the aluminium liquid, and they are with aluminium liquid surface.It does not exist together and only is that the sprinkler design and the method that spray Purge gas have nothing in common with each other.FILD adopts the graphite nitrogen diffuser tube that is embedded in furnace bottom, and other adds oxidation pill of aluminium adsorption filtration impurity; HM-MAXIJET, SNIF, ALPUR and PAL adopt rotor.The purification efficiency of rotor is than point-blank height.But if Purge gas is a nitrogen, so, its purification efficiency is also all undesirable.
In order to reach predetermined decontamination effect improving, on the one hand, must increase plant capacity, this causes structure huge, and associated cost and loss are also all very big.On the other hand, as SNIF and ALPUR, then require to add activated gas chlorine (Cl).HM-MAXIJET, SNIF and PAL more require to inject the scavenging agent that contains chlorine (Cl) or fluorine (F) etc.; These all are harmful to HUMAN HEALTH and environment.In addition, for the aluminium liquid oxidation that prevents to roll, reduce aluminium consumption and impurity, these equipment also will use the insulating covering agent that contains chlorine (Cl) or fluorine (F) etc., and environmental issue is arranged equally.FILD uses the petroleum gas insulation, burns a large amount of petroleum gas every year, and sprays a large amount of CO
2, produce serious Greenhouse effect, also very not environmental protection.
Summary of the invention
The present invention is exactly for addressing the above problem, and a kind of purifying method of molten non-ferrous metal is provided, and the purifying treatment that makes molten non-ferrous metal is compliance with environmental protection requirements both, reaches efficient again, and is energy-conservation, the low consumption purpose; The present invention also aims to be provided as and realize the required treating plant of aforesaid method, make that aforesaid method is easier to implement.
For achieving the above object, the invention provides a kind of purifying method of molten non-ferrous metal, this method comprises to be made Purge gas from bottom to top pass molten non-ferrous metal and carries out adsorption cleaning, it is characterized in that, purify simultaneously in gas adsorption, above molten non-ferrous metal, vacuumize, form vacuum suction liquation.
Described Purge gas is a rare gas element, is preferably nitrogen.
The present invention further provides the equipment of realizing aforesaid method, it is characterized in that, this equipment is made of non-ferrous metal melting and treatment unit and vacuum unit, and wherein vacuum unit links to each other with the space of non-ferrous metal melting and treatment unit inner melt top.
Non-ferrous metal melting and treatment unit can be single cell structure, multicell structure or not have cell structure.
Single cell structure non-ferrous metal melting and treatment unit are provided with shell, the space constitutes treatment chamber in the shell, shell upper is equipped with the vacuum (-tight) housing that is connected with the vacuum machine, outer casing bottom is equipped with the purified gas diffuser plate, outer casing bottom is equipped with flashboard, its both sides are provided with molten metal inlet and molten metal outlet, and sight glass is housed on the vacuum (-tight) housing.
Single cell structure non-ferrous metal melting and treatment unit are provided with outer cover, and vacuum cover and sight glass are equipped with in the outer cover top, and base is equipped with in its bottom, and crucible is housed in the outer cover, and bell purified gas diffuser tube is equipped with in the crucible bottom, and well heater also is housed in the crucible.
Multicell structure non-ferrous metal melting and treatment unit are provided with shell, the space is become cleaning chamber and treatment chamber by longitudinal subdivision in the shell, the treatment chamber top is provided with vacuum chamber, in treatment chamber and the cleaning chamber well heater is housed, the shell inner bottom part is provided with the purified gas diffuser plate, shell is provided with molten metal inlet and molten metal outlet, and sight glass is housed on the vacuum chamber.
No cell structure non-ferrous metal melting and treatment unit are to be provided with vacuum cover and sight glass on smelting furnace top, and bell purified gas diffuser tube is housed in stove.
Contribution of the present invention is that this method of purification organically combines nitrogen (N) bubble absorption and such two the original incoherent methods of purification of vacuum (V) vacuum suction, and has realized this method by an equipment.In the method, gas adsorption and vacuum attraction one are on next, and one pushes away one draws, and brings out one's strengths to make up for one's weaknesses mutually.Efficiently solve environmental protection, efficient, energy-conservation, the problem that people in the industry such as low consumption dream of.
Of the present inventionly efficiently show the horizontal area 63 of this treating plant " * 43 ", FILD is 75 " and * 118 ", promptly 1/3rd of the not enough FILD of the horizontal area of present device; Only half ton of the aluminium liquid of this treating plant treatment chamber, about 2 tons of FILD, semicontinuous casting speed per minute 400kg.Be aluminium liquid when this equipment, the treatment time is clock more than 1 minute only, then is 5 minutes when the FILD,, through the aluminium liquid of this device processes, its decontamination effect improving still is better than FILD.The aluminium alloy that particularly contains magnesium (Mg), we adopt vacuum to survey bubble method, vacuum tightness 29InHg, the result upwards heaves without the aluminium liquid sample top of this device processes, and as hamburger, after the incision, its section is riddled with gaping wounds; And the aluminium liquid sample that wherethrough was managed, the top is the rule depression to central authorities, and section is closely knit.The two forms obviously contrast.FILD has so tangible contrast with regard to difficulty.The performance of France ALPUR is poorer than FILD, and its decontamination effect improving of handling 40 minutes be it would be better 5 minutes of FILD.
Environment protecting of the present invention shows that at first, the present invention does not use the deleterious chlorine of HUMAN HEALTH (Cl), or the scavenging agent of chloride (Cl) fluorine-containing (F), and use is to HUMAN HEALTH and environmentally friendly and cheap nitrogen.The present invention mainly relies on the combination of the method for complete physics such as nitrogen (N) bubble absorption and vacuum (V) vacuum suction to remove to purify aluminium liquid.Secondly, in the scavenging process of aluminium liquid, the treatment chamber top vacuum anaerobic of present device, the aluminium liquid that rolls is had no way of and oxygen generation oxidizing reaction, therefore, needn't need to sprinkle the insulating covering agent of one deck chloride (Cl) or fluorine (F) as other type treating plant, can prevent effectively that also the aluminium liquid oxidation from producing the aluminum oxide slag on aluminium liquid surface.Above-mentioned FILD in use, and is annual expensive bigger, and produces a large amount of CO
2, severe contamination Working environment, very not environmental protection.The present invention adopts the calrod of immerseable, and the heat that is produced can be absorbed by aluminium liquid fully, and not only conserve energy has also been improved environment greatly.When other treating plant uses, be full of the oxidation granulated slag around equipment reaches, it is clean that this equipment then remains cleaning.This shows that the present invention thoroughly solves the existing environmental issue of other treating plant, thereby definitely be the treating plant of environment-friendly type.
Low consumption of the present invention shows, this equipment clean efficient height, and for reaching same decontamination effect improving, used volume is less, with the calrod heating of three 8kw, the annual electricity charge tens0000.FILD heats with LPG, annual more than 120 ten thousand Hongkong dollars.This equipment of use than using FILD, can be saved the energy every year and pay more than 100 ten thousand Hongkong dollars.This equipment also belongs to vacuum-treat, because treatment chamber headspace anaerobic, so, during purifying treatment, not only can not produce new oxidation sludge, also can make the aluminum oxide that has produced be reduced to aluminium, significantly reduce metal loss.This is FILD, SNIF, and ALPUR, equipment such as PAL are definitely out of the question.When each casting finishes, be full of the aluminum oxide slag in the equipment unlike miscellaneous equipment, what can see is the particle of brown, scrapes in the aluminium liquid, in real time fusing; Stir the silvering that promptly glimmers after the taking-up slightly.This explanation, the aluminum oxide that is sucked out in the aluminium liquid is reduced to aluminium.
The present invention also is applicable to the particularly purifying treatment of copper alloy of other non-ferrous metal.Copper alloy is in melting process, and it is air-breathing and oxidation is also more serious than aluminium, and passing purifying treatment is generally used nitrogen, carries out purifying treatment with NSV equipment, and significant efficient and effect must be arranged.
Description of drawings
Fig. 1 is multicell structure non-ferrous metal melting of the present invention and treatment unit structure sectional view.
Fig. 2 is the side-view of Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is multicell structure non-ferrous metal melting of the present invention and another structure sectional view of treatment unit.
Fig. 5 is single cell structure non-ferrous metal melting of the present invention and treatment unit structure sectional view.
Fig. 6 is the side-view of Fig. 5.
Fig. 7 is single cell structure non-ferrous metal melting of the present invention and another structure sectional view of treatment unit.
Fig. 8 is no cell structure non-ferrous metal melting of the present invention and treatment unit structure sectional view.
Embodiment
Embodiment 1
Bubble absorption of Purge gas (N) and negative pressure of vacuum (V) combine, thereby produce efficient and the purification function of environmental protection is a technical foundation of the present invention, and technological core also is the technical characterictic that the present invention is different from other kind purification style.
The treatment chamber of the treating plant of general bubble absorption all is sealing or semi-enclosed, so, rise from the bottom when purifying bubble, impurity in the Al adsorption liquid, comprise hydrogen and oxidation sludge, the emersion liquid level, enter the treatment chamber headspace after, just accumulate in the there, form state of saturation soon, produce pressure, this just forms resistance to continuing by the impurity of running out in the aluminium liquid, the concentration of the impurity of upper strata aluminium liquid also along with increasing, certainly will weaken purification efficiency.In order to improve purification efficiency, American-European expert often works hard on chemical process and chemical agent, so that the efficient raising is few, but such-and-such environmental issue occurs.
If the pressure of treatment chamber headspace is replied normal, so, just the purification resistance that it produced can be eliminated.If the pressure of treatment chamber headspace will produce bigger magnetism for negative, and then improve the detergent power that purifies bubble.When carrying out the bubbles of vacuum test, can see contained hydrogen in vacuum (V) the negative pressure meeting sucking-off aluminium liquid.And, know that from the principle of vacuum heat treatment vacuum-treat not only can prevent the thermometal oxidation, can also the metallic reducing in the metal oxide be come out.
But, also not all right iff the method for using negative pressure of vacuum, because on the one hand, its effect to the molten metal upper epidermis is bigger, and is very little to the effect of bottom; Efficient is poorer under static situation; On the other hand, concrete operations also have a lot of problems, are difficult in the actual production and use.So, still can not find so far and in actual production, use vacuum method to carry out the successful example of purifying treatment.
In the method for the present invention, after molten non-ferrous metal (being aluminium liquid in this example) enters the treatment chamber of non-ferrous metal refining plant, start vacuum pump, aluminium liquid is just pulled height by negative pressure of vacuum; Meanwhile, Purge gas (being nitrogen in this example) enters liquation through the purified gas diffuser plate of bottom of device.The aluminium wave rolls because of the nitrogen bubble of climbing sharply up from the bottom on aluminium liquid surface.When nitrogen bubble was climbed sharply in treatment chamber aluminium liquid, the impurity in the aluminium liquid was caught in absorption on the way, comprises hydrogen and oxide compound.Aluminium liquid surface tension weakens owing to the aluminium wave rolls, and nitrogen bubble is carried hydrogen and oxide compound secretly, breaks through aluminium liquid surface rapidly, is inhaled into the treatment chamber headspace, through vacuum (-tight) housing, and pump-line, water cooler is outside the vacuum pump device for transferring.Aluminium liquid is through after taking out high the processing, along the round wall formation eddy current of treatment chamber (
SPiral), spiral regularly and descend, on the one hand since the eddy current plane with go up several one-tenth of nitrogen burble that come from the bottom and contact for 90 °, make this contact, both comprehensively and evenly.On the other hand, also because action of centrifugal force, the aluminium molecule that density is bigger is fallen the periphery to eddy current, lighter impurity, comprise hydrogen and aluminum oxide slag, then pressed to the central authorities of eddy current by the bigger aluminium molecule of quality, aluminium liquid surface further strengthens decontamination effect improving on the nitrogen bubble band of being climbed sharply up by the bottom again.
In the method for the present invention with nitrogen (N) as purifying carrier, this is not only because it is cheap, main is because its healthy harmless to environment and operator is environmental protection.This equipment also can adopt chlorine (Cl) gas, and argon (Ar) gas is Purge gas, even adds fluorine-containing chloride scavenging agent, it can improve purification efficiency, but this or cost are too high, perhaps have serious environmental issue, so this equipment is not advocated use, and oppose to use chlorine.The planner believes that as long as use nitrogen (N) for purifying carrier, needs only and vacuum (V) negative pressure combines, can having reached very, ideal purifies boundary.If still dislike not enough, the user can increase plant capacity, or slow down casting speed as required, with the increase treatment time, or increases dress chute type equipment on chute, can improve purification efficiency and decontamination effect improving.
It is to make the purification efficiency of equipment produce qualitative leap that nitrogen (N) bubble absorption combines with vacuum (V) negative pressure.And, also solve the environmental issue that other treating plant can't overcome, and saved metal loss and production cost widely, also make purification more comprehensively, more even, efficient is better.
The equipment of realizing aforesaid method can have multiple structure formation, Fig. 1-Fig. 3 has provided the structure formation of an optimum, it is a kind of multicell structure, as shown, multicell structure non-ferrous metal refining plant 12 is provided with shell 1201, and building on the outer casing inner wall has refractory mortar liner 1210, and the space is become cleaning chamber 1202 and treatment chamber 1203 by longitudinal subdivision in the shell, cleaning chamber is used to deposit the liquation after the cleaning, is connected with cleaning chamber bell 1211 by hinge 1212 on the hinge frame 1214 on its top.Treatment chamber is used for molten metal is carried out purifying treatment, water-cooled bell 1218 is equipped with by the hinge 1217 that is contained on the hinge frame 1216 in its top, and transmission chain 1225 and the chain sling 1226 that is connected with the water-cooled bell is housed by being contained in the hanging the lid axle 1220, bearing 1221, sprocket wheel 1222,1223,1224 that hang on the lid support 1219, the water-cooled bell can be opened by above-mentioned chain gear apparatus, also can be by being contained in manual pivoted arm 1213 manual unlocking on the bell.In the water-cooled furnace portion of covering vacuum chamber 1204 is housed, it is used for forming vacuum above liquation.The vacuum chamber outside is equipped with and is used for vacuum vacuum unit 20, and it can be vacuum pump or other vacuum machine.Vacuum chamber communicates with treatment chamber, and vacuum (-tight) housing 1215 is equipped with at the vacuum chamber top.A well heater 1205 respectively is housed in treatment chamber and the cleaning chamber, and well heater is a calrod in this example, and this calrod can adopt direct hanging type as shown in Figure 1, is about to its upper end and is connected on two bells, and the direct screening of calrod part is in treatment chamber and cleaning chamber; Also can adopt horizontal as shown in Figure 4 embedding formula, be about to the horizontal on demand embedding furnace chamber of the extending part refractory lining of calrod.No matter be which kind of form, this calrod belongs to internal heat type, or direet-heating type because its diameter has only 30mm, and directly is inserted in the molten metal, thereby easy to use, full the heat that it sent absorbed by aluminium liquid again, so this calrod is used in preferential promotion.Build the bottom in the enclosure refractory brick 1227 and refractory slab 1228, purified gas diffuser plate 1206 is equipped with on refractory brick top, it is connected with air pump, be covered with pore on this diffuser plate, be used for gas is evenly fed molten metal, diffuser plate also can adopt as the bell diffuser tube among the embodiment 2 or other various gyrators.Shell is provided with molten metal inlet 1207 and molten metal outlet 1208, and sight glass 1209 is housed on the vacuum chamber, in order to observe aluminium liquid surface level, reference during for adjustment vacuum tightness.
This equipment can also be spread alumina bead at treatment chamber and cleaning chamber, and alumina bead has the effect of adsorption filtration impurity.The strumbox of can also be in a cleaning chamber exit plug-in band ceramic filter plate is with the impurity in the aluminum filtration liquid.These no doubt have positive effect to the quality of aluminium liquid, but they are accessory to entire equipment.Whether the user can be necessary to install additional according to concrete needs decision.
This equipment work principle can be referring to Fig. 1, and aluminium liquid is driven vacuum machine 20 after entering treatment chamber 1203 by treatment chamber tangent line inlet 1207, and aluminium liquid is pulled height and carries out vacuum-treat, forms eddy current along circumferential wall then, spirals and descends.Aluminium liquid after the purification enters cleaning chamber 1202 through the passageway, bottom, flows into the casting groove by cleaning chamber liquid outlet 1208 again and casts.
Embodiment 2
The equipment of realizing purifying method of the present invention also can be Fig. 5～single cell structure shown in Figure 7, as Fig. 5, shown in Figure 6, single cell structure non-ferrous metal melting and treatment unit 11a are provided with shell 11a1, post refractory slab 11a8 on the outer casing inner wall, the space constitutes treatment chamber 11a2 in the shell, shell upper is equipped with the vacuum (-tight) housing 11a3 that is connected with the vacuum machine, outer casing bottom is equipped with purified gas diffuser plate 11a4, outer casing bottom is equipped with flashboard 11a9, its both sides are provided with molten metal inlet 11a5 and molten metal outlet 11a6, and sight glass 11a7 is housed on the vacuum (-tight) housing.
This device is to be used for continuously or the easier device of semicontinuous casting.If the condition permission, chute type NSV device also can add the eddy current function.If condition disapproves, can not arrange; But after being taken out height for fear of aluminium liquid, aluminium liquid short circuit is afterwards just directly flowed out without vacuum-treat, installs the planted agent flashboard is set.
Aluminium liquid is flowed into by the molten metal inlet, rises flashboard, flows to the molten metal outlet, and input nitrogen starts evacuator and carries out purifying treatment.Sight glass is in order to observe aluminium liquid surface water level, to adjust vacuum tightness.For improving decontamination effect improving, should increase the length of device as far as possible.
Another structure formation of single cell structure non-ferrous metal melting and treatment unit as shown in Figure 7, this device can be used for discontinuous castingprocesses.This device 11b is provided with outer cover 11b
1, vacuum cover 11b is equipped with at the outer cover top
2And sight glass 11b
3, base 11b is equipped with in its bottom
4, crucible 11b is housed in the outer cover
5, bell purified gas diffuser tube 11b is equipped with in the crucible bottom
6, well heater 11b also is housed in the crucible
7
Pending aluminium liquid with the appliances loading of crucible, is put into outer cover and is handled.This device generally is not subject to processing time limitation, can make decontamination effect improving reach best.This device must be installed electric heating device, solidifies because of the treatment time is oversize to prevent aluminium liquid.It adopts the bell purified gas diffuser tube that is connected in the outer cover, also can adopt various dissimilar rotors to improve degassing efficiency.Sight glass is in order to observe aluminium liquid surface water level, to adjust vacuum tightness.
Embodiment 3
Further, realize that the equipment of purifying method of the present invention can also be single cell structure shown in Figure 8, it is to be provided with vacuum cover 121 and sight glass 122 on smelting furnace top, and bell purified gas diffuser tube 123 is housed in stove.
This device is directly used on various stove and accessorys such as electro-induction smelting furnace or the holding furnace, covers bell purified gas diffuser tube is housed, with ejection nitrogen (N) gas; Also can adopt various dissimilar rotors to improve degassing efficiency.Do not need to install additional calrod, because of the existing heating function (being equivalent to external-heat) of stove and accessory itself.Vacuum cover (V) then is necessary, could combine with nitrogen bubble like this, and molten metal is carried out purifying treatment.
This device is the same with device 11b, is not subject to processing time limitation, and treatment effect is comparatively desirable.
The present invention is not limited to above-mentioned embodiment, anyly carries out the method for molten non-ferrous metal purification and relevant device and relevant with it equivalent transformation mode with purified gas absorption and the mode that vacuum attraction combines and all will fall within the scope of the present invention.
Claims (3)
1, a kind of purifying method of molten non-ferrous metal, comprise and make Purge gas from bottom to top pass molten non-ferrous metal and carry out adsorption cleaning, it is characterized in that, when molten non-ferrous metal is flowed through the treatment chamber for the treatment of plant, it is the purification bubble of purified gas that the purified gas diffuser plate of treatment chamber molten metal bottom ejects with nitrogen or argon gas, molten metal is purified the bubble adsorption cleaning handle, and the top, decontamination chamber vacuumizes, take out high molten metal, the metal surface that the liquid wave is rolled carries out the vacuum purification processing.
2, a kind for the treatment of plant of realizing the molten non-ferrous metal of the described method of claim 1 is characterized in that, this treating plant (11a) is provided with shell (11a
1), the space constitutes treatment chamber (11a in the shell
2), shell upper is equipped with the vacuum (-tight) housing (11a that is connected with the vacuum machine
3), outer casing bottom is equipped with purified gas diffuser plate (11a
4), outer casing bottom is equipped with flashboard (11a
9), its both sides are provided with molten metal inlet (11a
5) and molten metal outlet (11a
6), sight glass (11a is housed on the vacuum (-tight) housing
7).
3, a kind for the treatment of plant of realizing the molten non-ferrous metal of the described method of claim 1, it is characterized in that, this treating plant (12) is provided with shell (1201), the space is become cleaning chamber (1202) and treatment chamber (1203) by longitudinal subdivision in the shell, the treatment chamber top is provided with vacuum chamber (1204), well heater (1205) is housed in treatment chamber and the cleaning chamber, the shell inner bottom part is provided with purified gas diffuser plate (1206), shell is provided with molten metal inlet (1207) and molten metal outlet (1208), and sight glass (1209) is housed on the vacuum chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129841 CN1224724C (en) | 2001-10-30 | 2001-10-30 | Method for cleaning molten non-ferrous metal and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129841 CN1224724C (en) | 2001-10-30 | 2001-10-30 | Method for cleaning molten non-ferrous metal and its equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1354268A CN1354268A (en) | 2002-06-19 |
| CN1224724C true CN1224724C (en) | 2005-10-26 |
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| CN 01129841 Expired - Fee Related CN1224724C (en) | 2001-10-30 | 2001-10-30 | Method for cleaning molten non-ferrous metal and its equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374591C (en) * | 2003-11-24 | 2008-03-12 | 黄德盛 | Method for purifying molten non-ferrous metal and equipment therefor |
| CN101880776A (en) * | 2010-06-01 | 2010-11-10 | 鹤壁地恩地新材料科技有限公司 | Novel metallic magnesium refining method |
| CN103173629A (en) * | 2011-12-23 | 2013-06-26 | 秦皇岛开发区美铝合金有限公司 | Aluminum alloy cleanliness treatment process special for hub forging |
| 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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