CN102912156B - System and method for recycling magnesium and magnesium alloy waste - Google Patents
System and method for recycling magnesium and magnesium alloy waste Download PDFInfo
- Publication number
- CN102912156B CN102912156B CN201210459074.2A CN201210459074A CN102912156B CN 102912156 B CN102912156 B CN 102912156B CN 201210459074 A CN201210459074 A CN 201210459074A CN 102912156 B CN102912156 B CN 102912156B
- Authority
- CN
- China
- Prior art keywords
- crucible
- melt
- furnace
- smelting furnace
- magnesium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a system and method for recycling magnesium and magnesium alloy waste. The system comprises at least one melting furnace, wherein an air intake device is communicated to the bottom of a first crucible, inert gas is blown in from the bottom of a melt, and bubbles carry impurities in the melt to a liquid level; when a melting furnace inputs the melt into a thermal insulation casting furnace, and a first liquid outlet pipe is communicated to the part, close to the bottom, of the first crucible so as to ensure that the melt can not carry over the impurities; and a small amount of impurities are still contained in the melt after the impurities are removed, and the impurities are settled at a position, close to a feeding hole, inside the thermal insulation casting furnace, so as to ensure that the impurities settled at the bottom of a second crucible can not be carried over when the melt is transferred toward an ingot casting device, so that the impurity removing effect and efficiency are guaranteed. When the thermal insulation casting furnace transfers the melt toward the ingot casting device, at least one melting furnace completes impurity removing treatment, the melt is transferred toward the thermal insulation casting furnace, feeding to the ingot casting device is guaranteed, a continuous recycling process is realized, and the production efficiency is improved.
Description
Technical field
The present invention relates to recovery system and the method for a kind of magnesium and magnesium alloy waste material.
Background technology
Magnesium and Magnesium Alloys Components by Die Casting accounts for the more than 90% of whole Magnesium Alloys Components at present, and in Die Casting process, melt filling die cavity, causes producing a large amount of magnesium and magnesium alloy waste material, and scrap rate can reach 40～60% of total metal input amount.Yet the waste material overwhelming majority that above-mentioned press casting procedure produces is all clean high-level waste, the control that this part waste material is reclaimed for the total cost of product has extremely crucial effect.
General Die Casting Enterprise has the processing mode of waste material: sell, reclaim outside factory or factory in reclaim.First two situation causes very large burden to enterprise, and the factor of external influence is excessive.
The removal process of waste material is normally with discontinuous or semicontinuous smelting furnace, to melt, then cover or prevent that with suitable shielding gas bath surface and air from reacting with flux; After fusing, the oxide compound forming when Die Casting just can adopt corresponding method of refining to remove; And then utilize through the melt of removal of impurities and cast.The method of refining of waste material has two kinds: have flux method and without flux method.
Having flux method is mainly for impure content many magnesium and alloyed scrap thereof.In melt, add flux, flux is reacted with impurity element and oxide compound in waste material, form slag, thereby reach the object that purifies waste material.The shortcoming of this technology is: flux mostly is muriate, easily causes in product content of Cl element higher; And during melting, can produce the corrosive gasess such as HCL, serious to equipment corrosion; Impurity element in flux and waste material and the reaction product of oxide compound easily remain in alloy, destroy mechanical property and the corrosion resistance of product, need long standing this kind that could reduce to be mingled with; The proportion of flux needs well to adjust; Whole removal process is discontinuous or semi-continuous, and production efficiency is not high.
Without flux method employing, being blown into rare gas element and taking the oxide compound in waste material out of, reach deimpurity object, is the prefered method that in city, factory reclaims.With respect to there being flux method, simple without flux method operating process, do not need to add flux, reduce and pollute.But still there is many problems in the method: whole removal process is discontinuous or semi-continuous, production efficiency is not high, existing purification and impurity removal carries out in a smelting furnace, purification and impurity removal process comprises scrap melting, removal of impurities and impurity sedimentation, the whole long time of purification and impurity removal process need, smelting furnace is directly connected with ingot casting device, ingot casting device ingot casting also needs certain hour, but the time that ingot casting device ingot casting consumes than the time of the purification and impurity removal process in smelting furnace is wanted much shorter, in this case, just there is the interruption of producing, affect production efficiency, the impurity sedimentation of purification and impurity removal process is the bottom that the impurity that makes to float up to melt liquid level is deposited to melt again, this process can adopt the standing mode of melt, in order to improve the interruption situation of production, the time that shortens purification and impurity removal, can change the standing mode of melt into dynamic settling, after removal of impurities completes, at smelting furnace, to ingot casting device, shift in the process of melt, be accompanied by the sedimentation of impurity, but so just cause the effect of removal of impurities to be difficult to control, a large amount of impurity is taken in ingot casting device, purification and impurity removal is limited in one's ability, the simple rare gas element bubble that leans on is taken the inclusion in melt out of, for some, be mingled with the waste material that content is higher, as thin-wall part, waste material that oxide content is higher etc., alloy after recovery is difficult to reach relevant criterion requirement, has limited the use without flux online recycling production line, in purification and impurity removal process, melt transfer goes out crucible when carrying out ingot casting, and in crucible, melt liquid level declines to a great extent, and shielding gas can not supplement timely, be very easy to cause the melt burning in crucible, but slow down melt liquid level, decline and can bring the consequences such as production efficiency is too low.
Summary of the invention
The object of the present invention is to provide a kind of recovery ability strong, continuous, the continual magnesium of production process and magnesium alloy waste material few/without flux online recycling system.
Another object of the present invention is to provide a kind of recovery ability strong, continuous, the continual magnesium of production process and magnesium alloy waste material few/without flux online recycling method.
Technical scheme provided by the invention is:
A recovery system for magnesium and magnesium alloy waste material, comprising:
At least one smelting furnace, the first drain pipe of arbitrary smelting furnace is communicated to the inner position near bottom of the first crucible of this smelting furnace, arbitrary smelting furnace has to the diffuser that passes into rare gas element in the first crucible of this smelting furnace, and this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace;
Insulation casting furnace, the second crucible bottom of described insulation casting furnace is with respect to the horizontal plane inclined, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe of the opening for feed near described insulation casting furnace gradually with respect to same level the bottom of described the second crucible; ; And
Ingot casting device;
Wherein, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device selectivity, the first drain pipe of described at least one smelting furnace is optionally communicated with described insulation casting furnace, when the second drain pipe of described insulation casting furnace and described ingot casting device are in connected state, the first drain pipe of one of them smelting furnace and described insulation casting furnace are in connected state.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, the inside of the second crucible of described insulation casting furnace is provided with n the second partition longitudinally arranging, wherein, n >=2, a described n second partition becomes n+1 part of fluid connection each other by the interior separation of described the second crucible, and a described n second partition staggers each other, wherein has at least a second partition to be arranged at the inner position near bottom of described the second crucible.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, n=3, one of them in described three second partitions is arranged at the inner position near bottom of described the second crucible, and wherein two are arranged at the inner position near liquid level of described the second crucible.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, the inside of the first crucible of described arbitrary smelting furnace is provided with first dividing plate of longitudinal setting, and described the first dividing plate becomes two portions of fluid connection each other by the interior separation of the first crucible of this smelting furnace.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, described diffuser includes an inlet pipe and a rotary drive mechanism, described inlet pipe has first part and second section, described first part vertically arranges, and its one end is connected to described rotary drive mechanism, and the other end is communicated with a plurality of second sections, described a plurality of second section radially distributes with respect to the other end of described first part, and one end of described first part is also connected to source of the gas.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, described a plurality of second sections are four, and are uniformly distributed with respect to described first part.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, the first dividing plate of the inside of the first crucible of described arbitrary smelting furnace is extended to the middle part of this first crucible by the top of this first crucible.
Preferably, in described magnesium and the recovery system of magnesium alloy waste material, described at least one smelting furnace is two.
Apply described system recoveries magnesium and a method for magnesium alloy waste material, it is characterized in that, comprise the following steps:
Step 1, in the first crucible of at least one smelting furnace, respectively magnesium and/or magnesium alloy waste material are fused into melt, and the melt in the first crucible of each smelting furnace is carried out to removal of impurities processing, the process that removal of impurities is processed is: by diffuser, to melt, continue to pass into the rare gas element of certain hour, make impurity in melt at the effect float downward of bubble to liquid level, this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace
When described insulation casting furnace and described ingot casting device are in connected state, in described at least one smelting furnace, have at least a smelting furnace to complete the removal of impurities of its melt is processed;
Step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, the melt that is passed through removal of impurities processing inputs in the second crucible of described insulation casting furnace, make the contained residual impurity of melt of processing through removal of impurities, in the second crucible of insulation casting furnace, sedimentation occur, described the second crucible bottom is inclined with respect to same level, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe of the opening for feed near described insulation casting furnace gradually with respect to same level the bottom of described the second crucible,
Step 3, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device, the melt that is passed through sedimentation inputs to described ingot casting device, and described ingot casting device is cast magnesium ingot by the melt through sedimentation.
Preferably, in described method, in described step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, while being passed through in the second crucible that melt that removal of impurities processes inputs to described insulation casting furnace, in this smelting furnace, retain the melt of certain volume.
Preferably, in described method, in described step 1, the process that removal of impurities is processed also comprises: to melt inside, pass into the aerosol of flux, melt is stirred simultaneously, described aerosol is disperseed in rare gas element by flux to form.
The recovery system of magnesium of the present invention and magnesium alloy waste material includes at least one smelting furnace, diffuser is communicated to the bottom of the first crucible, rare gas element is from the bottom of melt is blown into, form a large amount of equally distributed bubbles, bubble is carried into melt liquid level by the impurity in melt in uphill process, thereby realize the separated of melt and impurity, separated impurity is positioned at melt liquid level; When smelting furnace is inputted melt to insulation casting furnace, the first drain pipe of smelting furnace is communicated to the position of the close bottom of the first crucible, and in guarantee transfer process, melt can not brought impurity in insulation casting furnace again like this; Melt enters insulation casting furnace, in the melt of processing through removal of impurities, still contain a small amount of residual impurity, can in insulation casting furnace, there is sedimentation in these impurity, and deposit in the position near opening for feed along the slope of the second crucible bottom, described the second drain pipe is communicated to the inner position near bottom of the second crucible of this insulation casting furnace, when guaranteeing that melt shifts to ingot casting device, the impurity that falls to the second crucible bottom can not brought in ingot casting device.Said process has improved the dust removal rate of magnesium and magnesium alloy waste material.
When being incubated the second drain pipe of casting furnace, be communicated with ingot casting device, while shifting melt by insulation casting furnace to ingot casting device, having at least a smelting furnace to complete processes the removal of impurities of melt, and shift melt to insulation casting furnace, said process has guaranteed the supply for the melt of ingot casting device, realize carrying out continuously of whole removal process, improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of smelting furnace of the recovery system of magnesium of the present invention and magnesium alloy waste material;
Fig. 2 is the structural representation of insulation casting furnace of the recovery system of magnesium of the present invention and magnesium alloy waste material;
Fig. 3 is the process flow sheet of the recovery method of magnesium of the present invention and magnesium alloy waste material.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to specification sheets word.
As depicted in figs. 1 and 2, the invention provides the recovery system of a kind of magnesium and magnesium alloy waste material, comprise: at least one smelting furnace 1, the first drain pipe 5 of arbitrary smelting furnace is communicated to the first inner position near bottom of crucible 3 of this smelting furnace, arbitrary smelting furnace has to the diffuser that passes into rare gas element in the first crucible of this smelting furnace, and this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace; Insulation casting furnace 11, the second crucible bottom of described insulation casting furnace is with respect to the horizontal plane inclined, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe 6 of the opening for feed 12 of described insulation casting furnace gradually with respect to same level the bottom of described the second crucible; And ingot casting device; Wherein, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device selectivity, the first drain pipe of described at least one smelting furnace is optionally communicated with described insulation casting furnace, when the second drain pipe of described insulation casting furnace and described ingot casting device are in connected state, the first drain pipe of one of them smelting furnace and described insulation casting furnace are in connected state.
In described magnesium and the recovery system of magnesium alloy waste material, the inside of the second crucible of described insulation casting furnace is provided with n the second partition longitudinally arranging, wherein, n >=2, a described n second partition becomes n+1 part of fluid connection each other by the interior separation of described the second crucible, a described n second partition staggers each other, wherein has at least a second partition to be arranged at the inner position near bottom of described the second crucible.
In described magnesium and the recovery system of magnesium alloy waste material, one of them in described three second partitions is arranged at the inner position near bottom of described the second crucible, and wherein two are arranged at the inner position near liquid level of described the second crucible.
In described magnesium and the recovery system of magnesium alloy waste material, the second drain pipe of described insulation casting furnace is communicated to the inner position near bottom of the second crucible of this insulation casting furnace.
In described magnesium and the recovery system of magnesium alloy waste material, the inside of the first crucible of described arbitrary smelting furnace is provided with first dividing plate 2 of longitudinal setting, and described the first dividing plate becomes two portions of fluid connection each other by the interior separation of the first crucible of this smelting furnace.
In described magnesium and the recovery system of magnesium alloy waste material, the first dividing plate of the inside of the first crucible of described arbitrary smelting furnace is extended to the middle part of this first crucible by the top of this first crucible.
In described magnesium and the recovery system of magnesium alloy waste material, described diffuser includes an inlet pipe and a rotary drive mechanism, described inlet pipe has first part and second section, described first part vertically arranges, its one end is connected to described rotary drive mechanism, the other end is communicated with a plurality of second sections, and described a plurality of second sections radially distribute with respect to the other end of described first part, and one end of described first part is also connected to source of the gas.
In described magnesium and the recovery system of magnesium alloy waste material, described a plurality of second sections are four, and are uniformly distributed with respect to described first part.
In described magnesium and the recovery system of magnesium alloy waste material, described at least one smelting furnace is two.
The system recoveries magnesium that application is described and the method for magnesium alloy waste material, comprise the following steps:
Step 1, in the first crucible of at least one smelting furnace, respectively magnesium and/or magnesium alloy waste material are fused into melt, and the melt in the first crucible of each smelting furnace is carried out to removal of impurities processing, the process that removal of impurities is processed is: by diffuser, to melt, continue to pass into the rare gas element of certain hour, make impurity in melt at the effect float downward of bubble to liquid level, this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace, when described insulation casting furnace and described ingot casting device are in connected state, in described at least one smelting furnace, having at least a smelting furnace to complete processes the removal of impurities of its melt,
Step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, the melt that is passed through removal of impurities processing inputs in the second crucible of described insulation casting furnace, make the contained residual impurity of melt of processing through removal of impurities, in the second crucible of insulation casting furnace, sedimentation occur, described the second crucible bottom is inclined with respect to same level, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe away from described the second drain pipe gradually with respect to same level the bottom of described the second crucible,
Step 3, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device, the melt that is passed through sedimentation inputs to described ingot casting device, and described ingot casting device is cast magnesium ingot by the melt through sedimentation.
In described method, in described step 1, in the process that removal of impurities is processed, in described step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, when the melt that pass through removal of impurities processing inputs in the second crucible of described insulation casting furnace, retains the melt of certain volume in this smelting furnace.
In described method, in described step 1, the process that removal of impurities is processed also comprises: to melt inside, pass into the aerosol of flux, melt is stirred simultaneously, described aerosol is disperseed in rare gas element by flux to form.
When to magnesium and magnesium alloy waste material recovery, can select the waste materials such as the less running channel of impurities, rising head to reclaim, this type of waste material accounts for totally very large proportion of waste material, has larger recovery value, reduces recovery difficult simultaneously.The present invention has reserved the opening that sprays flux simultaneously, can be by there being flux method to process the larger waste material of foreign matter content, and also can obtain good impurity-eliminating effect.
The waste material of choosing packs into and specifies in charging hopper through sorting, has accumulation, preheating that 4-6 hopper carries out waste material, and hopper can weight of loading be 100kg, and hopper can be determined according to the actual needs of recovery system by weight of loading.General preheating temperature is 150 ℃, and this preheating method is static preheating.Just the waste material through preheating is dropped in smelting furnace afterwards, carry out follow-up fusing and removal of impurities and process.
The present invention includes at least one smelting furnace.In a smelting furnace, first in smelting furnace, drop into magnesium and magnesium alloy waste material, scrap melting is become to melt.The capacity of smelting furnace is 800kg, in smelting furnace, retain in advance the melt that does not contain impurity (composition of the melt for the treatment of removal of impurities that this melt that does not contain impurity obtains with the present invention is consistent) of the 200kg that has an appointment, burner hearth is warmed up to 680 ℃～710 ℃, and waste material is melted.
Removal of impurities is treated to and by diffuser, to melt, continues to pass into the rare gas element of certain hour, diffuser is communicated to the position of the close bottom of the first crucible, make bubble rise to liquid level from the bottom of melt always, in the uphill process of bubble, the impurity of melt is carried into liquid level, thereby realized the separated of impurity and melt.When removal of impurities is processed, the first part of inlet pipe vertically arranges, second section is positioned at the other end of first part, inlet pipe, in motor effect rotation, exports by rotary jet, reaches rare gas element bubble and can be evenly distributed on as much as possible in magnesium liquid, inlet pipe can be a plurality of, and the outlet side of inlet pipe is uniformly distributed in the position of the close bottom of the first crucible, so that the formed bubble of rare gas element is uniformly distributed in melt, the effect of removal of impurities is tried one's best.Rare gas element is generally argon gas, and pressure is 0.2MPa～0.4MPa.Passing into the rare gas element time length is generally 10～20min, and the time length need to be determined according to the effect of removal of impurities.
In removal of impurities treating processes, can in melt, add the alloying element of adjusting bath composition, to supply the alloying constituent lacking in waste material.
The melt of processing through removal of impurities need to carry out sample examination, the impurity in confirmation melt and the content of alloying constituent.If the content of the impurity in melt is lower than setting numerical value, this smelting furnace completes the removal of impurities of melt is processed, can be by the melt transfer in this smelting furnace to being incubated in casting furnace; Otherwise, continue to pass into rare gas element in melt.If the alloying constituent in melt does not reach requirement, to supplementing the alloying element of appropriate amount in melt.
For the lower waste material of foreign matter content, only adopt the way that passes into rare gas element just can realize removal of impurities, obtain good impurity-eliminating effect.Relatively high for foreign matter content, by not realizing the waste material of impurity-eliminating effect without flux method, can adopt the mode of the aerosol rare gas element that adds a small amount of flux to carry out secondary removal of impurities.After passing into rare gas element removal of impurities, detect the undesirable magnesium liquid of magnesium liquid foreign matter content, continue to pass into a small amount of aerosol and carry out secondary removal of impurities, improve the removal of impurities ability of recovery system.The aerosol of above-mentioned flux is by flux, in rare gas element, to be disperseed to form.
In prior art, normally flux is sprinkling upon to the surface of melt, but the impurity-eliminating effect of this mode is poor, is unfavorable for fully contacting and reacting of flux and the interior impurity of melt.Of the present invention while passing into the aerosol of flux, be that the inside to melt passes into this aerosol, follow the stirring of melt simultaneously, flux is contacted fully with melt, improve the reaction process of flux and impurity, improve dust removal rate.
The general 12h of the smelting furnace processing of once skimming, disposes the waste material impurity of melt liquid level, can process according to field condition.
The present invention preferably arranges two smelting furnace, and two smelting furnace melt respectively, removal of impurities process, to realize the continuous feeding to insulation casting furnace.Particularly, when the fusing, removal of impurities of carrying out waste material when a smelting furnace exactly processed, another smelting furnace has completed to be processed the removal of impurities of waste material, is communicated with insulation casting furnace, to being incubated in casting furnace, inputs melt; Two smelting furnace are alternately to insulation casting furnace feed.Each smelting furnace capacity is 800kg, and generalized case shifts the amount of melt in 500kg left and right at every turn, and be 10min～20min transfer time.When two smelting furnace are worked simultaneously; reduced once shifting the requirement of the amount of melt; for any smelting furnace; the amplitude that the liquid level of the melt in its first crucible declines has all reduced; shielding gas can add in the first crucible timely, has reduced the probability that melt is exposed in air atmosphere and occurs to burn.
The smelting furnace that completes removal of impurities processing exports melt in insulation casting furnace to by the first drain pipe, the first drain pipe is communicated to the position of close bottom of the first crucible of smelting furnace, because the impurity with melt extraction all floats on the liquid level of melt, when the bottom from melt starts to shift, isolated impurity can be brought into again in insulation casting furnace.When a melt transfer, preferably in smelting furnace, retain the melt of certain volume, and whole melts are not produced.If this time whole melts are produced, the time that follow-up waste material melts will increase greatly, and with the Impurity deposition of melt extraction in the bottom of the first crucible, when carrying out the waste material of next round when dropping into and melting, the impurity that part is deposited on the first crucible bottom has been mixed into again in melt, when removal of impurities is processed, not only to remove the impurity itself containing in this waste material of taking turns, also to remove after that part is deposited on the first crucible bottom and mix again the impurity of coming in, this has obviously increased the difficulty of removal of impurities, and can have influence on effect and the efficiency of removal of impurities.
Complete the melt transfer of removal of impurities processing to being incubated in casting furnace, in melt, also can contain a small amount of residual impurity, this part impurity can further sedimentation in insulation casting furnace.Melt enters from a side of insulation casting furnace, from the opposite side output (i.e. the liquid outlet position of the second drain pipe) of the length direction along insulation casting furnace.When being incubated casting furnace to ingot casting device continuous wave output melt, melt for entering with what go out, still can flow through the distance of the length of insulation casting furnace in insulation casting furnace due to melt, can realize the sedimentation of impurity in this process.If insulation casting furnace is not to input continuously melt, but according to ingot casting device need the output of interval certain hour, melt have certain hour in insulation casting furnace in static condition, static condition is more conducive to the sedimentation of impurity.Because prior art is, in smelting furnace, impurity is carried out to sedimentation, the settling time is longer, and final impurity-eliminating effect is also better, but simultaneously also more can have influence on subsequent production the carrying out continuously of---ingot casting---.By the design of insulation casting furnace, avoided the generation of above-mentioned situation, when obtaining equally even better impurity-eliminating effect, the present invention has better dust removal rate, has guaranteed carrying out continuously of subsequent production, has improved greatly production efficiency.
In the second crucible of insulation casting furnace, be provided with three second partitions that longitudinally arrange, the second crucible is separated into four parts of fluid connection each other, and three second partitions stagger each other.Second partition is not that the top from the second crucible is coherent to bottom, and it up or below or offer opening with below up can flow along the length direction of insulation casting furnace melt simultaneously.While shifting melt by smelting furnace to insulation casting furnace; melt liquid level in insulation casting furnace can fluctuate; can make the impurity of the sedimentation of the second crucible bottom float on the one hand; shielding gas is just difficult to well cover melt liquid level on the other hand, and above-mentioned design is in order to suppress to be incubated the fluctuation of the melt liquid level in casting furnace.
Preferably, in three second partitions, first second partition 9 and the 3rd second partition 7 are positioned at the position near the close liquid level of the second crucible, the position of the 3rd second partition is near the fluid inlet of the second drain pipe, the upper limb of the 3rd second partition is connected with the top of the second crucible, and near the liquid level fluid inlet that can reasonable inhibition the second drain pipe fluctuates.First second partition is positioned at the side away from the second drain pipe, and its above and below is not all connected with the second crucible.Second second partition 8 between first second partition and the 3rd second partition is positioned at the position near the bottom of the second crucible, can play the effect that stops the impurity that falls to the second crucible bottom.
In smelting furnace, be also provided with similar structure, the inside of the first crucible of smelting furnace is provided with first dividing plate of longitudinal setting, and the first dividing plate becomes two portions of fluid connection each other by the interior separation of the first crucible of this smelting furnace.The first dividing plate extends to the middle part of this first crucible from the top of the first crucible.Smelting furnace shifts in the process of melt in casting furnace to insulation, or when dropping into waste material in smelting furnace, all can cause that the melt liquid level in smelting furnace fluctuates, and the first dividing plate is also in order to suppress this fluctuation.
The bottom of the second crucible of insulation casting furnace is what be obliquely installed, and increase gradually from a side extended height of laterally closer second drain pipe away from the second drain pipe with respect to same level, when migrating out melt by the second drain pipe from insulation casting furnace, impurity is not easy to be taken out of.
Melt enters in ingot casting device, is cast magnesium ingot.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification sheets and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (10)
1. a recovery system for magnesium and magnesium alloy waste material, is characterized in that, comprising:
At least one smelting furnace, the first drain pipe of arbitrary smelting furnace is communicated to the inner position near bottom of the first crucible of this smelting furnace, arbitrary smelting furnace has to the diffuser that passes into rare gas element in the first crucible of this smelting furnace, and this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace; Insulation casting furnace, the second crucible bottom of described insulation casting furnace is with respect to the horizontal plane inclined, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe of the opening for feed near described insulation casting furnace gradually with respect to same level the bottom of described the second crucible; And
Ingot casting device;
Wherein, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device selectivity, the first drain pipe of described at least one smelting furnace is optionally communicated with described insulation casting furnace, when the second drain pipe of described insulation casting furnace and described ingot casting device are in connected state, the first drain pipe of one of them smelting furnace and described insulation casting furnace are in connected state.
2. the recovery system of magnesium as claimed in claim 1 and magnesium alloy waste material, it is characterized in that, the inside of the second crucible of described insulation casting furnace is provided with n the second partition longitudinally arranging, wherein, n >=2, a described n second partition becomes n+1 part of fluid connection each other by the interior separation of described the second crucible, and a described n second partition staggers each other, wherein has at least a second partition to be arranged at the inner position near bottom of described the second crucible.
3. the recovery system of magnesium as claimed in claim 2 and magnesium alloy waste material, it is characterized in that, n=3, one of them in three second partitions is arranged at the inner position near bottom of described the second crucible, and wherein two are arranged at the inner position near liquid level of described the second crucible.
4. the recovery system of magnesium as claimed in claim 2 and magnesium alloy waste material, it is characterized in that, the inside of the first crucible of described arbitrary smelting furnace is provided with first dividing plate of longitudinal setting, and described the first dividing plate becomes two portions of fluid connection each other by the interior separation of the first crucible of this smelting furnace.
5. the recovery system of magnesium as claimed in claim 1 and magnesium alloy waste material, it is characterized in that, described diffuser includes an inlet pipe and a rotary drive mechanism, described inlet pipe has first part and second section, described first part vertically arranges, and its one end is connected to described rotary drive mechanism, and the other end is communicated with a plurality of second sections, described a plurality of second section radially distributes with respect to the other end of described first part, and one end of described first part is also connected to source of the gas.
6. the recovery system of magnesium as claimed in claim 5 and magnesium alloy waste material, is characterized in that, described a plurality of second sections are four, and is uniformly distributed with respect to described first part.
7. the recovery system of magnesium as claimed in claim 1 and magnesium alloy waste material, is characterized in that, described at least one smelting furnace is two.
8. the system recoveries magnesium of application as described in any one in claim 1～7 and a method for magnesium alloy waste material, is characterized in that, comprises the following steps:
Step 1, in the first crucible of at least one smelting furnace, respectively magnesium and/or magnesium alloy waste material are fused into melt, and the melt in the first crucible of each smelting furnace is carried out to removal of impurities processing, the process that removal of impurities is processed is: by diffuser, to melt, continue to pass into the rare gas element of certain hour, make impurity in melt at the effect float downward of bubble to liquid level, this diffuser is communicated to the position of close bottom of the first crucible of this smelting furnace
When described insulation casting furnace and described ingot casting device are in connected state, in described at least one smelting furnace, have at least a smelting furnace to complete the removal of impurities of its melt is processed;
Step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, the melt that is passed through removal of impurities processing inputs in the second crucible of described insulation casting furnace, make the contained residual impurity of melt of processing through removal of impurities, in the second crucible of insulation casting furnace, sedimentation occur, described the second crucible bottom is inclined with respect to same level, and the vergence direction of the bottom of described the second crucible is: increase from a side extended height of laterally closer described second drain pipe of the opening for feed near described insulation casting furnace gradually with respect to same level the bottom of described the second crucible,
Step 3, the second drain pipe of described insulation casting furnace is communicated with described ingot casting device, the melt that is passed through sedimentation inputs to described ingot casting device, and described ingot casting device is cast magnesium ingot by the melt through sedimentation.
9. method as claimed in claim 8, it is characterized in that, in described step 2, the first drain pipe that one of them is completed to the smelting furnace that the removal of impurities of its melt is processed is communicated with described insulation casting furnace, the first drain pipe is communicated to the inner position near bottom of the first crucible of this smelting furnace, while being passed through in the second crucible that melt that removal of impurities processes inputs to described insulation casting furnace, in this smelting furnace, retain the melt of certain volume.
10. method as claimed in claim 8, is characterized in that, in described step 1, the process that removal of impurities is processed also comprises: to melt inside, pass into the aerosol of flux, melt is stirred simultaneously, described aerosol is disperseed in rare gas element by flux to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459074.2A CN102912156B (en) | 2012-11-14 | 2012-11-14 | System and method for recycling magnesium and magnesium alloy waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459074.2A CN102912156B (en) | 2012-11-14 | 2012-11-14 | System and method for recycling magnesium and magnesium alloy waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102912156A CN102912156A (en) | 2013-02-06 |
| CN102912156B true CN102912156B (en) | 2014-05-07 |
Family
ID=47610729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210459074.2A Expired - Fee Related CN102912156B (en) | 2012-11-14 | 2012-11-14 | System and method for recycling magnesium and magnesium alloy waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102912156B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886816B (en) * | 2014-05-09 | 2017-10-13 | 重庆硕龙科技有限公司 | The continuous flux method of smelting and device of a kind of magnesium and magnesium alloy |
| CN107429318A (en) * | 2015-02-16 | 2017-12-01 | 湖南斯瑞摩科技有限公司 | Method based on magnesium alloy waste material production national standard magnesium alloy ingot |
| CN107976063A (en) * | 2017-11-29 | 2018-05-01 | 天津镁特威科技有限公司 | A kind of magnesium alloy melting and heat preservation stove with recycling |
| CN108746560A (en) * | 2018-08-14 | 2018-11-06 | 广州德志金属制品有限公司 | A kind of magnesium stove processing unit (plant) |
| CN108994266A (en) * | 2018-09-26 | 2018-12-14 | 东北大学 | A kind of magnesium lithium alloy ingot casting preparation facilities and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050920A (en) * | 2007-04-18 | 2007-10-10 | 天津镁特威科技有限公司 | Gas type magnesium alloy quantitative melting heat insulation furnace |
| CN101368236A (en) * | 2008-09-01 | 2009-02-18 | 李扬德 | Solvent-free waste magnesium on-site remelting refining reutilization process |
| CN202254798U (en) * | 2011-07-29 | 2012-05-30 | 天津镁特威科技有限公司 | Structure of crucible for smelting magnesium liquid |
| CN102586605A (en) * | 2011-01-18 | 2012-07-18 | 华孚精密金属科技(常熟)有限公司 | Method for recovering aluminum-containing magnesium alloy waste material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004225069A (en) * | 2003-01-20 | 2004-08-12 | Aisin Seiki Co Ltd | Regeneration dissolving and retaining furnace for magnesium alloy |
-
2012
- 2012-11-14 CN CN201210459074.2A patent/CN102912156B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050920A (en) * | 2007-04-18 | 2007-10-10 | 天津镁特威科技有限公司 | Gas type magnesium alloy quantitative melting heat insulation furnace |
| CN101368236A (en) * | 2008-09-01 | 2009-02-18 | 李扬德 | Solvent-free waste magnesium on-site remelting refining reutilization process |
| CN102586605A (en) * | 2011-01-18 | 2012-07-18 | 华孚精密金属科技(常熟)有限公司 | Method for recovering aluminum-containing magnesium alloy waste material |
| CN202254798U (en) * | 2011-07-29 | 2012-05-30 | 天津镁特威科技有限公司 | Structure of crucible for smelting magnesium liquid |
Non-Patent Citations (4)
| Title |
|---|
| 王晓强等.镁合金再生技术综述.《铸造》.2001,第50卷(第8期),第446-449页. |
| 邹钢.镁合金废料的回收及熔炼技术的研究.《材料导报》.2004,第18卷(第8A期),第210-212页. |
| 镁合金再生技术综述;王晓强等;《铸造》;20010831;第50卷(第8期);第446-449页 * |
| 镁合金废料的回收及熔炼技术的研究;邹钢;《材料导报》;20040831;第18卷(第8A期);第210-212页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102912156A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102912156B (en) | System and method for recycling magnesium and magnesium alloy waste | |
| CN102212705B (en) | Combined furnace system for fire refining of red copper scrap | |
| CN102492852B (en) | Alloy melt purifier and its method | |
| CN103555889B (en) | Device and method for quickly removing occluded foreign substances in molten steel | |
| CN104120213B (en) | A kind of method of blowing magnesium steam external desulfurization of hot metal refine and device | |
| CN103896275A (en) | Plasma refining and purifying furnace for producing solar energy polysilicon through metallurgy method | |
| CN1221470C (en) | High purity silicon and productive method thereof | |
| WO2010068140A1 (en) | Method and apparatus for electron-beam or plasma-jet melting of metal from a crystallizer into a crystallizer | |
| CN109022826A (en) | Reduction refining integration smelting system | |
| CN101845556B (en) | Shaft furnace and rotary furnace combined type fire refining process for raw red copper | |
| CN202380061U (en) | Secondary aluminium recovery device | |
| CN111876619A (en) | Aluminum alloy melt refining treatment device and method for obtaining ultralow hydrogen and slag content | |
| CN201778090U (en) | Remelting and refining furnace for recovered magnesium alloy materials | |
| CN104548647B (en) | The reciprocating continuous crystalizer of multiple spot | |
| EP2586745B1 (en) | A vacuum recycling apparatus and method for refining solar grade polysilicon | |
| CN104145034A (en) | Aluminum refining apparatus and aluminum refining method | |
| CN2789694Y (en) | High-temperature molten slag continuous reduction copper-smelting slag separating furnace | |
| CN1976773A (en) | Casting method and installation for casting aluminium or aluminium alloys | |
| CN107245592A (en) | A kind of founding of aluminium ingot | |
| CN85104036A (en) | Directly produce the production method of sodium stannate from the tin concentrate | |
| CN104145033A (en) | Aluminum refining apparatus and aluminum refining method | |
| CN203908287U (en) | Swirling smelting furnace | |
| CN113005244A (en) | Metal smelting liquid recovery device for steel smelting and processing and use method thereof | |
| US4349381A (en) | Recovery of heavy metals from spent alumina | |
| US1733419A (en) | Continuous copper-melting furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20191114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |