CN109609763A - Metal aluminium production process - Google Patents
Metal aluminium production process Download PDFInfo
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- CN109609763A CN109609763A CN201811347690.2A CN201811347690A CN109609763A CN 109609763 A CN109609763 A CN 109609763A CN 201811347690 A CN201811347690 A CN 201811347690A CN 109609763 A CN109609763 A CN 109609763A
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- aluminium
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
- C22B21/0092—Remelting scrap, skimmings or any secondary source aluminium
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- 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
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- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ceramic Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses the methods of a kind of production of metallic aluminium and the processing of aluminium ash, the following steps are included: metallic aluminium produces the first stage, metallic aluminium is obtained from the raw material containing metallic aluminium and/or the raw material containing aluminium element, and aluminium ash generated during this is collected, aluminium ash includes ash content and the viscous metallic aluminium that is attached on ash content；Metallic aluminium produces second stage, handles aluminium ash, the ash content and viscous metallic aluminium in separation aluminium ash, and collects respectively；In the ash treatment stage, ash content is handled, sub-elects the target components in ash content；The masonry structure production phase prepares compound material by raw material of target components, and compound material is processed as the masonry structure with fixed form.The method of the embodiment of the present invention can largely recycle the viscous metallic aluminium in aluminium ash, improve the production efficiency of metallic aluminium.Further, it is possible to avoid the ash content Collection utilization in aluminium ash from improving economic benefit while environmental pollution.
Description
Technical field
The invention belongs to metallic aluminium production field more particularly to a kind of metal aluminium production process.
Background technique
Aluminium scrap ash is the waste of aluminium manufacturer and the waste that various aluminium product industries generate, and again passes by the recycling of aluminium
The remaining secondary trade waste of operation.The appearance of aluminium ash is silver gray, powdered, main component be metallic aluminium, aluminium oxide,
The chloride of silica, iron oxide and potassium sodium calcium and magnesium.Therefore, by aluminium ash in useful component carry out recycling have it is very heavy
The meaning wanted.
Summary of the invention
The embodiment of the present invention provides a kind of metal aluminium production process, can largely recycle the metallic aluminium in aluminium ash,
Improve the production efficiency of metallic aluminium.Further, it is possible to which the ash content Collection utilization in aluminium ash is avoided improving while environmental pollution
Economic benefit.
On the one hand, the embodiment of the present invention provides a kind of metal aluminium production process, comprising the following steps:
Metallic aluminium produces the first stage, and metallic aluminium is obtained from the raw material containing metallic aluminium, and collects and should generate in the process
Aluminium ash, the aluminium ash includes ash content and the viscous metallic aluminium that is attached on the ash content；
Metallic aluminium produces second stage, handles the aluminium ash, obtains ash content and viscous metal in the aluminium ash
Aluminium, and collect respectively；
The ash treatment stage handles the ash content, sub-elects the target components in the ash content；
The masonry structure production phase prepares compound material using the target components as one of raw material, the compound material is added
Work is the masonry structure with fixed form.
The one aspect of the embodiment of the present invention, the method that metallic aluminium is obtained in the metallic aluminium production first stage is melting
Method.
The one aspect of the embodiment of the present invention, metallic aluminium production second stage the following steps are included:
Mixture preparation is added a certain amount of cold burden in the aluminium ash, forms mixture；
It is sirred and separated, the mixture is stirred, until the temperature of the mixture is down to first object temperature, stop
It only stirs, the range of the first object temperature is 680 DEG C~700 DEG C；
The mixture after stirring is stood the predetermined time by settle and separate, or stands the mixture until described mixed
The temperature for closing material drops to predetermined temperature, oozes out in liquid form to the viscous metallic aluminium with ash separation, collects remaining ash
Point.
The one aspect of the embodiment of the present invention, the ash treatment stage the following steps are included:
Ash content is cooling, the temperature of the ash content is down to the second target temperature, the range of second target temperature is 50
DEG C~60 DEG C, and the ash content is stirred in this process；
Target components sorting, the ash content after cooling is sorted by granularity, obtains first object component and second
Target components, the granularity of the first object component are less than the granularity of second target components.
The one aspect of the embodiment of the present invention, the particle size range of the first object component are as follows: 0.2mm~5mm.
The one aspect of the embodiment of the present invention, the particle size range of second target components are as follows: 5mm~8mm.
Third target components, institute are also obtained in the step of one aspect of the embodiment of the present invention, the target components separate
The granularity for stating third target components is greater than 8mm, and the third target components are as the original in the metallic aluminium production first stage
Material is at least partly.
The one aspect of the embodiment of the present invention, at least partially described second target components of the cold burden.
The one aspect of the embodiment of the present invention, the masonry structure production phase the following steps are included:
The first object component and the second target components are mixed in proportion and obtain grey matter component by compound material preparation,
Dry type bonding agent is added in the grey matter component and obtains the compound material, the quality percentage of the dry type bonding agent in conjunction with powder
Content is 0.7wt%~2.5wt%, and the mass percentage of the combination powder is 5wt%~30wt%, remaining is the ash
Matter component；
The compound material is added in mold for compression moulding, obtains parison；
Sintering is sintered the parison, and then obtains the masonry structure.
The one aspect of the embodiment of the present invention, in the grey matter component, the first object component and the second target group
The mass ratio divided is 1:5~12:1.
The metallic aluminium of introduction of the embodiment of the present invention produces and the method for aluminium ash processing, by the processing of metallic aluminium production and aluminium ash
It combines, the two is made to be unified for an entirety.The various materials that each stage generates during method is implemented are subject to respectively
It utilizes, reduces the amount of the waste material of the generation in metallic aluminium production process, and improve the output capacity of metallic aluminium, while can also reach
To energy-saving and environment-friendly purpose.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the flow diagram of the method for metallic aluminium production and the processing of aluminium ash of the embodiment of the present invention；
Fig. 2 is the flow diagram of the metallic aluminium production second stage of the embodiment of the present invention；
Fig. 3 is the flow diagram in the ash treatment stage of the embodiment of the present invention；
Fig. 4 is the flow diagram of the masonry structure production phase of the embodiment of the present invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, below in conjunction with drawings and the specific embodiments, the present invention is carried out further detailed
Description.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting this hair
It is bright.To those skilled in the art, the present invention can be in the case where not needing some details in these details
Implement.The description of embodiment is preferably managed just for the sake of being provided by showing example of the invention of the invention below
Solution.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
To solve the above-mentioned problems, the embodiment of the invention provides a kind of metal aluminium production process.Fig. 1 shows the present invention
The flow diagram for the metal aluminium production process that embodiment provides.As shown in Figure 1, the metallic aluminium producer in the embodiment of the present invention
The step of method are as follows:
S1: metallic aluminium produces the first stage, obtains gold from the raw material containing metallic aluminium and/or the raw material containing aluminium element
Belong to aluminium, and collect aluminium ash generated during this, the aluminium ash includes ash content and the viscous metallic aluminium that is attached on the ash content.
This stage is the Main Stage of metallic aluminium production.The raw material sources in the stage can be a variety of and plurality of raw materials mixed
It closes.For example, the raw material containing metallic aluminium can be the aluminum products or recycling aluminium, secondary that are recycled by other technical process
Aluminium, aluminium mainly exists in the form of elemental metals or alloy in such raw material.The raw material containing aluminium element can be ice crystal
Stone-aluminium oxide melts salt.Alternatively, above two raw material can be mixed according to a certain percentage, the first stage is produced as metallic aluminium
Raw material.Stringent limitation, preferably smelting process are not done as the metallic aluminium production technology of metallic aluminium production first stage.
As it can be seen that the product in this stage are as follows: metallic aluminium and aluminium ash.Metallic aluminium is collected as him and uses, and aluminium ash is as in next step
Rapid raw material.That is, this stage no waste mine generates, all output objects are utilized.
S2: metallic aluminium produces second stage, handles the aluminium ash, separates ash content and viscous gold in the aluminium ash
Belong to aluminium, and collects respectively.
The main purpose in this stage is to improve the output of metallic aluminium.The aluminium ash obtained from the aforementioned metallic aluminium production first stage
In contain a certain amount of viscous metallic aluminium.The viscous metallic aluminium includes aluminium simple substance and low melting point aluminium alloy.The viscous metal in the part
Aluminium economic value with higher, is extracted the output capacity that can be improved metallic aluminium.
Since there is likely to be other low-melting-point metals in addition to aluminium in viscous metallic aluminium, though the part low-melting-point metal
So there are the value of recycling, but also a degree of impurity being defined as in metallic aluminium.So metallic aluminium production second
After the viscous metallic aluminium of output is collected in stage, it can be added into the metallic aluminium production first stage as raw material.
Further, the liquid aluminium content in viscous metallic aluminium is higher, is added into the metallic aluminium production first stage, energy
The eduction rate of metallic aluminium, reduces the content of viscous metallic aluminium in aluminium ash enough during raising smelting technology, so that most of metal
Aluminium in the metallic aluminium production first stage can either higher degree be separated.While improving the efficiency of melting,
Alleviate the pressure of the corresponding steps of subsequent aluminium ash processing.
As it can be seen that the product in this stage are as follows: viscous metallic aluminium and ash content.Viscous metallic aluminium is collected as him and uses, and ash is allocated as
For the raw material of next step.That is, this stage no waste mine generates, all output objects are utilized.
S3: the ash treatment stage handles the ash content, sub-elects the target components in the ash content.
The processing material in this stage is the ash content that metallic aluminium produces output in second stage.The purpose of this phase process is will
Ash content is classified according to certain standard, so that the ash content after classification is used as him.The standard of classification can be the granularity of ash content,
Using the moderate component of granularity as target components, other components are used by other collect as him.
As it can be seen that the product in this stage are as follows: the ash content of the ash content of a variety of ranks, each rank has utility value, it is seen then that
This stage contamination-free generates.
S4: the masonry structure production phase prepares compound material using the target components as raw material, the compound material is processed as
Masonry structure with fixed form.
This stage is the main recycling stage of ash content.By the target components of output in S3 step in terms of ingredient and/
Or be adjusted in terms of blending powder, it can be used to produce masonry structure.
Masonry structure in the embodiment of the present invention is generalized concept, can be the main structural masonry knot for playing structural behaviour
Structure can also be to be mainly used for playing a certain or multiple functions functional masonry structures.
Structural masonry structure includes: brick masonry structure, watt masonry structure, axis masonry structure, beam masonry structure etc..Function
Property masonry structure includes: refractory masonry structure, high elastic modulus masonry structure, wear-resisting masonry structure, porous masonry structure etc..
As shown in Fig. 2, in the embodiment of the present invention metallic aluminium production second stage the following steps are included:
S201: mixture preparation is added a certain amount of cold burden in the aluminium ash, forms mixture.
There are two the purpose that cold burden in this step is added is main: first, in the premise for not influencing viscous metallic aluminium separation
Under, improve the cooling rate of aluminium ash；Second, when guaranteeing that viscous metallic aluminium is separated, the mobility of liquid aluminium.
So the cold burden in the embodiment of the present invention requires have following characteristics: first, the temperature of cold burden is lower than the temperature of aluminium ash
Degree；Second, the average particle size of cold burden is greater than the average particle size of aluminium ash.
Preferably, the temperature of the cold burden is 0.1 times~0.4 times of the temperature of corresponding aluminium ash.For example, working as the temperature of aluminium ash
When degree is 700 DEG C, the temperature range of corresponding cold burden are as follows: 28 DEG C~70 DEG C.
It is further preferred that the average particle size of the cold burden is 1.1 times~2 times of the average particle size of the aluminium ash.
When technical solution in embodiments of the present invention is implemented, the viscous metallic aluminium in aluminium ash is contacted with cold burden, viscous gold
The temperature for belonging to aluminium reduces, and being detached from from ash content surface becomes liquid aluminium, and liquid aluminium has certain mobility at this time.Also, due to
Average particle size of the average particle size of cold burden relative to aluminium ash, so that having biggish gap between cold burden particle, which can
Channel is provided for the outflow of liquid aluminium, improves the extraction efficiency of viscous metallic aluminium, reduces the content of the viscous metallic aluminium in grey matter.
It is further preferred that the quality of cold burden is the 5%~25% of the quality of aluminium ash.Such material proportion can improve viscous
While the separating effect of stagnant metallic aluminium, the time required to shortening metallic aluminium production second stage.
In an embodiment of the present invention, the mass range of cold burden is depending on the mass range of aluminium ash.If the quality of aluminium ash
Range ∈ [0.3t, 0.8t), then the mass range for the cold burden being added is the 5%~12% of the quality of aluminium ash.
If the mass range ∈ [0.8t, 1.5t] of aluminium ash, then the mass range for the cold burden being added is the quality of aluminium ash
15%~25%.
S202: being sirred and separated, be stirred to the mixture, until the temperature of the mixture is down to first object temperature
Degree, stops stirring, and the range of the first object temperature is 680 DEG C~700 DEG C.
Technical solution in this step is stirred mixture in viscous metallic aluminium separation process, so that mixture
Entirety has preferable temperature uniformity, and in agitating device, more enough guarantees under the conditions of each spot temperature uniformity is higher
Viscous metallic aluminium in aluminium ash is uniformly separated, and guarantees that the viscous metallic aluminium in grey matter is largely separated.
The design of the target temperature, in 0.1 times~0.4 times of the temperature that the temperature of the cold burden is corresponding aluminium ash,
Time control is in the range of 12min~17min needed for step being sirred and separated.Further, in the temperature of the cold burden
When being 0.1 times~0.4 times of the temperature of corresponding aluminium ash, and when the quality of cold burden is the 5%~25% of the quality of aluminium ash, general
Time needed for being sirred and separated step, control was in the range of 13min~15min.
S203: the mixture after stirring is stood the predetermined time by settle and separate, or stands the mixture until institute
The temperature for stating mixture drops to predetermined temperature, oozes out in liquid form to the viscous metallic aluminium with ash separation, collects remaining
Ash content.
Technical solution in this step, the viscous metallic aluminium to isolate provide the sufficient delivery time.Also, stop
After stirring, destroyed by the operation that the channel that the cold burden that particle increases takes the liquid aluminium constituted outflow will not be stirred, and at this time
Viscous metal aluminum content in mixture is seldom, and the precipitation power of viscous metallic aluminium reduces, then keeps the smooth of the channel
The logical discharge rate that can be improved liquid aluminium.
It preferably, is 2min~15min the time required to settle and separate step.When the quality that the quality of cold burden is the aluminium ash
10%~20% when, which can be controlled in 10min or so.
It is further preferred that the range of predetermined time is depending on the mass range of aluminium ash.
If aluminium ash mass range ∈ [0.3t, 0.8t), then the range of predetermined time be 8min~10min.If aluminium ash
Mass range ∈ [0.8t, 1.5t], then the range of predetermined time is 5min~8min.
As shown in figure 3, ash treatment stage in the embodiment of the present invention the following steps are included:
S301: ash content is cooling, and the temperature of the ash content is down to the second target temperature, the range of second target temperature
It is 50 DEG C~60 DEG C, and the ash content is stirred in this process.
The type of cooling of the present embodiment is cooled down preferably by horizontal drum cooler, then cooling and whipping step can
It carries out simultaneously.The operation of stirring enables to come into full contact with the uniformity for guaranteeing cooling degree between aluminium ash particle.Also, it stirs
Operation can be avoided ash content and reunite together in temperature-fall period, and then avoid increasing the work load of follow-up separation step.
The type of cooling of the present embodiment is when the particle size range of aluminium ash is between 0.2mm~20mm, by the second target temperature
Range be set to 50 DEG C~60 DEG C, then can guarantee in subsequent sorting step phenomena such as being not in fugitive dust.
S302: target components sorting is sorted the ash content after cooling by granularity, and obtain multiple components, institute
Stating multiple components includes first object component and the second target components, and the granularity of the first object component is less than second mesh
Mark the granularity of component.
The sorting means of the present embodiment are preferably sieved.The equipment of sorting is preferably horizontal screening machine, and then can will be grey
Dividing disposable sorting is multiple components without multi-pass operation.Ash content is collected according to different grain size, and the product of collection is not only
The first object component and the second target components are limited only to, may also include other components.
Preferably, the particle size range of first object component are as follows: 0.2mm~5mm, the particle size range of the second target components are as follows:
5mm~8mm.It also can get third target components in the step of target components separate, the granularity of the third target components is greater than
8mm, the third target components produce the raw material in the first stage at least partly as the metallic aluminium.In ash content if it exists
Granularity is greater than the component of 8mm, then shows that the comparision contents of the viscous metallic aluminium in the component are high, also have recovery value.And it is somebody's turn to do
Ash content in step has already been through cooling technique, and temperature is lower, and then viscous metallic aluminium therein is caused to be not easy to extract
Out.So the biggish component of the partial particulate was added in the metallic aluminium production first stage, the techniques such as melting behaviour is re-started
Make, extracts viscous metallic aluminium therein, avoid the waste of metallic aluminium.
Second target components granularity of the middle acquisition of the present embodiment is relatively large, temperature is lower, can be used as mixture preparation
Cold burden in step.Also, the granularity of the second target components is larger, but is less than the granularity of third target components, illustrates the second mesh
It marks and contains a certain amount of viscous metallic aluminium in component, but the content of the viscous metallic aluminium in the part is seldom, even if being carried out again to it
Smelting operation is also difficult to extract the viscous metallic aluminium in the part.If using the second target components as cold burden, viscous gold therein
Belonging to aluminium for liquid aluminium can provide good wellability when liquid aluminium flows out, will not because of surface tension effect so that liquid
Aluminium is attached on cold burden/aluminium ash and can not trickle in droplet shape.
As shown in figure 4, masonry structure production phase in the embodiment of the present invention the following steps are included:
S401: the first object component and the second target components are mixed in proportion and obtain grey matter group by compound material preparation
Point, dry type bonding agent is added in the grey matter component and obtains the compound material, the matter of the dry type bonding agent in conjunction with powder
Amount percentage composition is 0.7wt%~2.5wt%, and the mass percentage of the combination powder is 5wt%~30wt%, remaining is
The grey matter component.
In an embodiment of the present invention, in the grey matter component, the first object component and the second target components
The range of mass ratio is 1:5~12:1.Grey matter component chooses the property for capableing of a degree of masonry structure for determining to obtain
Energy.If the mass ratio of the first object component and the second target components is 2~12:1, the masonry structure obtained has more
Good wear-resisting property, but the size of masonry structure should not be too large.If the quality of the first object component and the second target components
The ratio between for 1:5~4 item obtain masonry structure have better structural behaviour so that being obtained as material, also, within this range
The masonry structure obtained has good fire resistance, is suitable as fireproof construction material, such as refractory brick.
Wherein, there are many preparation methods of dry type bonding agent, in some alternative embodiments, dry type bonding agent is by drying
Wood pulp waste liquor is made, and wood pulp waste liquor is the waste liquid generated when preparing wood pulp.By drying preparation dry type bonding agent to wood pulp waste liquor,
It can also realize that secondary recovery is recycled to wood pulp waste liquor, reduce wood pulp waste liquor pollution on the environment.
In some alternative embodiments, the mass percentage of dry type bonding agent is 1wt%~2wt%；In compound material
The mass percentage of grey matter is 80wt%~90wt%, and the mass percentage in conjunction with powder is 10wt%~20wt%.It is logical
Cross the 65 type masonry structures that alumina composition content is 65% or so in masonry structure made from the formula.
In other optional embodiments, the mass percentage of dry type bonding agent is 1wt%~2wt%, compound material
The mass percentage of central gray is 85wt%~95wt%, and the mass percentage in conjunction with powder is 5wt%~15wt%.It is logical
Cross the 70 type masonry structures that alumina composition content is 70% or so in masonry structure made from the formula.
Further include in compound material to prepare the higher masonry structure of salic amount in some alternative embodiments
The mass percentage of alumina powder, compound material central gray is 70wt%~85wt%, and the mass percentage in conjunction with powder is
5wt%~20wt%, the mass percentage of alumina powder are 2wt%~15wt%.The masonry structure as made from the formula
Middle alumina composition content is the masonry structure greater than 70%.
In some alternative embodiments, the mass percentage of dry type bonding agent is 1wt%~2wt%, in compound material
The mass percentage of grey matter is 75wt%~85wt%, and the mass percentage in conjunction with powder is 10wt%~20wt%, oxygen
The mass percentage for changing aluminium powder is 2wt%~10wt%.Alumina composition content in the masonry structure as made from the formula
For 75% or so 75 type masonry structures.
In some alternative embodiments, the mass percentage of dry type bonding agent is 1.5wt%~2.5wt%, compound
Expect central gray mass percentage be 70wt%~80wt%, in conjunction with powder mass percentage be 10wt%~
20wt%, the mass percentage of alumina powder are 5wt%~15wt%.Aluminium oxide in the masonry structure as made from the formula
The 80 type masonry structures that component content is 80% or so.
In some alternative embodiments, the mass percentage of dry type bonding agent is 1.5wt%~2.5wt%, compound
The mass percentage for expecting central gray is 75wt%~85wt%, and the mass percentage in conjunction with powder is 5wt%~15wt%,
The mass percentage of alumina powder is 5wt%~15wt%.Alumina composition contains in the masonry structure as made from the formula
The 85 type masonry structures that amount is 85% or so.
S402: the compound material is added in mold for compression moulding, obtains parison.
Wherein, parison can be arbitrary character, such as rectangular, spherical, cylindricality, abnormity etc., and the present invention is with no restriction.It can
With using press machine, by mixed material compression moulding, preferably 8000 tons of model of hydraulic press is pressed.The shape of parison
Shape size is controlled by mold.
S403: sintering is sintered the parison, and then obtains the masonry structure.
In some alternative embodiments, step S403 further include:
Step S1031: baking step dries parison 20~26 hours at 60 DEG C~160 DEG C, to obtain drying type
Base.
Step S1032: forming step is sintered dry parison 6~16 hours at a temperature of 1300 DEG C~1700 DEG C, with
To masonry structure.
In these optional embodiments, also parison is dried before the sintering step, dry parison is formed, passes through
Parison is dried 20~26 hours at 60~160 DEG C, so that moisture content is lower in the drying parison formed, is prevented higher
At a temperature of sintering processes when, the masonry structure that higher moisture makes cracks, and influences the intensity of masonry structure.Its
In, parison can be dried in tunnel oven, aqueous mass percentage is preferably 1% hereinafter, more in dry parison
Preferably 0.5% or less.
Wherein, the temperature in forming step can be selected according to the formula of mixed material, it is preferred that in forming step
Temperature it is directly proportional to the mass percentage of mixed material central gray so that while guaranteeing that sintering is abundant, additionally it is possible to anti-
Only energy waste.Sintering processing it is not limited here, when parison is spherical in shape, selects rotary kiln to be sintered；When parison is in brick
When shape, hyperthermia tunnel Kiln is selected to be sintered.
In some alternative embodiments, in mixed material, the mass percentage of dry type bonding agent be 1wt%~
The mass percentage of 2wt%, compound material central gray are 80wt%~90wt%, and the mass percentage in conjunction with powder is
10wt%~20wt%, the temperature in forming step are 1350 DEG C~1390 DEG C.
In some alternative embodiments, in mixed material, the mass percentage of dry type bonding agent be 1wt%~
The mass percentage of 2wt%, compound material central gray are 85wt%~95wt%, and the mass percentage in conjunction with powder is
5wt%~15wt%, the temperature in forming step are 1390~1410 DEG C.
In some alternative embodiments, in mixed material, the mass percentage of dry type bonding agent be 1wt%~
The mass percentage of 2wt%, compound material central gray are 75wt%~85wt%, and the mass percentage in conjunction with powder is
10wt%~20wt%, the mass percentage of alumina powder are 2wt%~10wt%, the temperature in forming step is 1410~
1450℃。
In some alternative embodiments, in mixed material, the mass percentage of dry type bonding agent be 1.5wt%~
The mass percentage of 2.5wt%, compound material central gray are 70wt%~80wt%, and the mass percentage in conjunction with powder is
10wt%~20wt%, the mass percentage of alumina powder are 5wt%~15wt%, the temperature in forming step is 1450~
1500℃。
In some alternative embodiments, in mixed material, the mass percentage of dry type bonding agent be 1.5wt%~
The mass percentage of 2.5wt%, compound material central gray are 75wt%~85wt%, and the mass percentage in conjunction with powder is
5wt%~15wt%, the mass percentage of alumina powder are 5wt%~15wt%, and the temperature in forming step is 1500 DEG C
~1600 DEG C.
It should be clear that the invention is not limited to specific configuration described above and shown in figure and processing.
For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, several tools have been described and illustrated
The step of body, is as example.But method process of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified, modification and addition after understanding spirit of the invention, or suitable between changing the step
Sequence.
It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device
State certain methods or system.But the present invention is not limited to the sequence of above-mentioned steps, that is to say, that can be according in embodiment
The sequence referred to executes step, may also be distinct from that the sequence in embodiment or several steps are performed simultaneously.
The above description is merely a specific embodiment, it is apparent to those skilled in the art that,
For convenience of description and succinctly, the system, module of foregoing description and the specific work process of unit can refer to preceding method
Corresponding process in embodiment, details are not described herein.It should be understood that scope of protection of the present invention is not limited thereto, it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of metal aluminium production process, which comprises the following steps:
Metallic aluminium produces the first stage, and metallic aluminium is obtained from the raw material containing metallic aluminium, and collects the aluminium generated during this
Ash, the aluminium ash include ash content and the viscous metallic aluminium that is attached on the ash content；
Metallic aluminium produces second stage, handles the aluminium ash, obtains ash content and viscous metallic aluminium in the aluminium ash, and
It collects respectively；
The ash treatment stage handles the ash content, sub-elects the target components in the ash content；
The masonry structure production phase prepares compound material using the target components as one of raw material, the compound material is processed as
Masonry structure with fixed form.
2. the method according to claim 1, wherein obtaining metallic aluminium in the metallic aluminium production first stage
Method is smelting process.
3. the method according to claim 1, wherein the metallic aluminium production second stage the following steps are included:
The cold burden of predetermined amount is added in the aluminium ash, forms mixture for mixture preparation；
It is sirred and separated, the mixture is stirred, until the temperature of the mixture is down to first object temperature, stop stirring
It mixes, the range of the first object temperature is 680 DEG C~700 DEG C；
The mixture after stirring is stood the predetermined time by settle and separate, or stands the mixture until the mixture
Temperature drop to predetermined temperature, oozed out in liquid form to the viscous metallic aluminium with ash separation, collect remaining ash content.
4. method according to any one of claims 1 to 3, which is characterized in that the ash treatment stage includes following step
It is rapid:
Ash content is cooling, and the temperature of the ash content is down to the second target temperature, and the range of second target temperature is 50 DEG C~
60 DEG C, and the ash content is stirred in this process；
Target components sorting, the ash content after cooling is sorted by granularity, and obtain multiple components, the multiple component
Including first object component and the second target components, the granularity of the first object component is less than the grain of second target components
Degree.
5. according to the method described in claim 4, it is characterized in that, the particle size range of the first object component are as follows: 0.2mm~
5mm。
6. according to the method described in claim 4, it is characterized in that, the particle size range of second target components are as follows: 5mm~
8mm。
7. according to the method described in claim 4, it is characterized in that, also obtaining third mesh in the step of target components separate
Component is marked, the granularity of the third target components is greater than 8mm, and the third target components produce the first rank as the metallic aluminium
Raw material in section is at least partly.
8. according to the method described in claim 4, it is characterized in that, at least partially described second target group of the cold burden
Point.
9. according to the method described in claim 4, it is characterized in that, the masonry structure production phase the following steps are included:
The first object component and the second target components are mixed in proportion and obtain grey matter component, described by compound material preparation
Dry type bonding agent is added in grey matter component and obtains the compound material, the mass percentage of the dry type bonding agent in conjunction with powder
For 0.7wt%~2.5wt%, the mass percentage of the combination powder is 5wt%~30wt%, remaining is the grey matter group
Point；
The compound material is added in mold for compression moulding, obtains parison；
Sintering is sintered the parison, and then obtains the masonry structure.
10. according to the method described in claim 9, it is characterized in that, in the grey matter component, the first object component and
The range of the mass ratio of second target components is 1:5~12:1.
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