CN104561591A - Directional solidification short process purification equipment and purification method of high-purity aluminum - Google Patents
Directional solidification short process purification equipment and purification method of high-purity aluminum Download PDFInfo
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Abstract
The invention discloses directional solidification short process purification equipment and purification method of high-purity aluminum. The purification equipment comprises a purification device and a heating device, which are respectively independent, wherein the purification device comprises a cooling device, a purification heat conduction layer, a purification heat preservation crucible, a stirring device, a purification furnace cover, a vacuumizing device, a first heating mechanism and a temperature measurement device; the heating device comprises a heat insulating layer, a heating heat conduction layer, a heating crucible, a heating furnace cover, a second vacuumizing device, a second heating mechanism and a second temperature measurement device, a rotating platform is arranged at the bottom of the heating crucible, and a rotating mechanism and a transmission mechanism are arranged below the rotating platform. The purification method in which a purification process and a heating process are separately operated is adopted in the invention, so that a solid-liquid interface can be accurately controlled in the purification process to keep a stable temperature gradient and higher purification efficiency and purification quality are kept; afterheat of purified solid aluminum is utilized in the heating process, so that the heating efficiency is more than twice higher than that of conventional heating. The purification equipment disclosed by the invention has the advantages of low energy consumption, large handling capacity, high purification efficiency and high product purity.
Description
Technical field:
The present invention relates to a kind of rafifinal directional freeze short route equipment for purifying, particularly relate to a kind of method of purification adopting this rafifinal directional freeze short route equipment for purifying to carry out rafifinal purification, belong to metallurgy of aluminium purification techniques field.
Background technology:
Utilize segregation method to carry out to aluminium the processing method that purifying is industrial applications, segregation method purification techniques mainly contains fractional crystallisation method, zone melting method and directional solidification method at present.Directional solidification method can be divided into again cooling tube freezing method, bottom coohng method, sidewall method of cooling, top promotes freezing method, lateral solidification method etc.; Directional solidification method has the advantage that energy consumption is low, equipment and process is relatively simple and casting yield is higher, and being applicable to the rafifinal producing 4N to 6N in enormous quantities, is the main researchdevelopment direction of rafifinal purification techniques.
Through finding prior art retrieval, one " method of directional freeze purification rafifinal and smelting furnace thereof " is described in Chinese Patent Application No.: CN 201110224938.8, the method of this directional freeze rafifinal by selecting materials with the first step, second step melting, the 3rd step solidify purification, the 4th step obtains finished product and carries out, this smelting furnace comprises furnace shell, heating unit, container, whipping appts and refrigerating unit; Be provided with container at furnace shell internal fixtion, between furnace shell and container, interval is installed with the heating unit being no less than from top to bottom; Furnace bottom below container is provided with refrigerating unit; Furnace bottom temperature measuring equipment is installed between refrigerating unit and furnace shell.This inventive method has the advantage that energy consumption is low, treatment capacity is large, efficiency is high, product purity is high, can be used for the rafifinal producing 5N to 6N in enormous quantities.But this invention in use comes with some shortcomings: 1, because all operations completes in single body of heater, it heats, cooling efficiency is lower, and the production cycle extends, and causes production capacity lower; 2, because the growth pattern of purifying crystal body is upwards piled up by bottom, be unfavorable for the gathering of impurity element at end, cause its purification efficiency not high; 3, purification post crystallization ingot is in order to meet the requirement of purity, need remove 15% ~ 70% of thickness from afterbody, causes yield rate not high.
Summary of the invention:
Technical problem to be solved by this invention is: the deficiency existed for prior art, a kind of rafifinal directional freeze short route equipment for purifying and method of purification are provided, have that flow process is short, energy consumption is low, purification efficiency and the high advantage of production efficiency, can be used for the rafifinal that 4N to 6N is produced in industrialization.
The technical scheme that the present invention takes for technical solution problem is:
A kind of rafifinal directional freeze short route equipment for purifying, comprise purifying plant and heating unit, described purifying plant and heating unit are independent separately, be co-located on a large melting furnace shell inner, described purifying plant comprises refrigerating unit from outside to inside successively, purification heat-conducting layer, purify and be incubated crucible and whipping appts, purification bell is provided with directly over described purification insulation crucible, vacuum extractor and temperature measuring equipment is respectively arranged with in described purification bell both sides, the first heating arrangements is symmetrically arranged with in the below of described purification bell, the axle center place that described whipping appts is positioned at described purification bell can horizontally rotate, described bottom of purifying insulation crucible and purification heat-conducting layer is provided with heat-eliminating medium outlet, described heat-eliminating medium outlet is connected with outer loop pond, described heating unit is positioned at the side of described purifying plant, described heating unit comprises thermal insulation layer from outside to inside successively, heating heat-conducting layer and heating crucible, heating furnace cover is provided with directly over described heating crucible, the second vacuum extractor and the second temperature measuring equipment is respectively arranged with in described heating furnace cover both sides, the second heating arrangements is provided with below described heating furnace cover, rotation platform is provided with bottom described heating crucible, rotating mechanism is provided with below described rotation platform, described rotating mechanism is by transmission rig driven rotary, and then drive heating crucible and materials inside thereof to rotate.
The pivot link of described rotating mechanism is connected with described rotation platform by screw thread; Described purification heat-conducting layer and heating heat-conducting layer are woven by high thermal conductivity graphite fibre and form, and thickness is 10 ~ 20mm; Described refrigerating unit is equidistant is surrounded on described purification heat-conducting layer surrounding.
Adopt rafifinal directional freeze short route equipment for purifying recited above to carry out the method for purification of purifying, its concrete steps are as follows:
1. poured into by the raw aluminum liquid melt after refining in the purification insulation crucible in purifying plant, closed purification bell, opens whipping appts and stirs melt, and startup vacuum extractor makes purification be incubated in crucible and forms vacuum simultaneously;
2. after raw aluminum liquid melt starts to solidify, give the first heating arrangements energising, and slowly improve power, melt temperature is controlled between 660 DEG C ~ 680 DEG C by temperature measuring equipment, by refrigerating unit, pressure cooling is carried out to purification heat-conducting layer, control the thermograde of melt solid-liquid interface in purification insulation crucible between 5 DEG C ~ 20 DEG C, crystallization 2 ~ 4 hours;
3. after crystallization terminates, close whipping appts, the first heating arrangements and refrigerating unit, open purification bell, after purification insulation crucible is shifted out purifying plant, pour out the tail aluminium liquid that in insulation crucible of purifying, grade is low, the solid of now purifying in insulation crucible is the Purification of Aluminum solid of having purified;
4. the purification insulation crucible of said temperature at 500 DEG C ~ 550 DEG C is moved into on the rotatable platform in the heating unit of thermal insulation layer, closed heating furnace cover, purification insulation crucible is now heating crucible in heating unit, and Purification of Aluminum solid is and solidifies aluminium solid in heating unit;
5. start the second vacuum extractor to make to form vacuum in heating crucible, open the second heating arrangements and described solidify aluminium solid to melt, control Heating temperature between 750 DEG C ~ 800 DEG C by the second temperature measuring equipment, make it remain on aluminium fusing point; Open transmission rig, transmission rig drives rotatable platform to rotate by rotating mechanism, makes to solidify the rotary motion in heating unit of aluminium solid, the burn-off rate of accelerated solidification aluminium solid in heating crucible, effectively reduces the oxidational losses of melting process simultaneously;
6. the rafifinal liquid after fusing is put into purifying plant again together with heating crucible, heating crucible is now insulation crucible of purifying, repeating step 1. ~ 5., meet the rafifinal solid of purity requirement until obtain.
In described purification insulation crucible, aluminium liquid holding temperature is 660 DEG C ~ 680 DEG C, and temperature of solidification is 650 DEG C ~ 660 DEG C, and the crystallization rate of freezing interface is 4 ~ 8cm/h.
Principle of the present invention is on the basis of segregation method directional freeze purification techniques, implements sidepiece and force cooling directional freeze novel process for purifying, conservative control solid-liquid interface velocity of flow, accurate adjustment Tc and crystallization velocity in purifying plant; Excreted by tail aluminium liquid with tiling arrangement after purification completes, then Purification of Aluminum solid and crucible are put into heating unit fast, again melt in the Purification of Aluminum solid short period of time of high temperature coagulation, after fusing, aluminium liquid is again purified in purifying plant; Repetitive operation, until obtain the rafifinal meeting purity requirement.
The present invention is being solidified in purification process, have employed thermostatically heating mechanism and refrigerating unit, accurate control solidi fication interface melt temperature is between 660 DEG C ~ 680 DEG C, ensure that solid-liquid interface has and stablize 5 DEG C ~ 20 DEG C suitable thermogrades, the thickness of effective minimizing freezing interface place impurity enriched layer, makes the purity of solidification layer be stablized raising.In order to obtain more highly purified aluminium solid, after being purified first time, temperature puts into heating unit with thermal insulation layer at the aluminium solid of 500 ~ 550 DEG C together with crucible, crucible is placed on rotation platform and carries out spiral rotation, second heating arrangements is positioned at the top of crucible, along with the raising of heating power, Heating temperature remains between 750 DEG C ~ 800 DEG C, aluminium solid with temperature obtains rapid melting, the aluminium liquid that simultaneously melts constantly is rinsed to brush with spiral spinning motion and is solidified aluminium solid, accelerates the burn-off rate of aluminium solid.
Directional freeze purification process of the present invention is placed on by crucible in airtight purifying plant, and vacuum extractor makes furnace inner environment keep vacuum state, thus allows whole purification process not be oxidized and to pollute.
Present invention optimizes in existing technique and Purification of Aluminum is carried out head or tail portion excises the operation that impure part obtains rafifinal afterwards, reach short route, less energy-consumption, high efficiency production effect.
Whipping appts of the present invention is mechanical stirring, and stirring rake is positioned at purification crucible, remains on 30 ~ 100mm with the distance of freezing interface; Also electromagnetic stirring system can be adopted.
First heating arrangements of the present invention and the second heating arrangements all can adopt electric heater, also can adopt gas heating system.
Refrigerating unit of the present invention is equidistant is surrounded on purification heat-conducting layer surrounding, heat-eliminating medium is seamless uniform fold purification heat-conducting layer sidepiece, heat-eliminating medium is water cooling, also can adopt gas cooling, height corresponding to melt temperature controls automatically, and the flow of water coolant is 0.5 ~ 10m per second
3.
The present invention adopts the production model of purification process and heat-processed separate operation, both Process configuration have been carried out further optimizing, the thermograde enabling purification process accurately control solid-liquid interface to keep stable, the concentration of impurity in the melt of effective reduction solid-liquid interface forward position, thus control solidi fication process, keep higher purification efficiency and purification quality; The waste heat of aluminium solid after heat-processed utilizes and purifies, coordinate the heating unit of high insulation, under the effect of rotational system, crucible does rotation movement together with aluminium solid, accelerates the fusing of aluminium solid, and heating efficiency comparatively conventional heating can improve more than twice.Present invention greatly enhances production efficiency, there is the advantage that energy consumption is low, treatment capacity is large, efficiency is high, product purity is high.
Accompanying drawing explanation
Fig. 1 is the using state structural representation of rafifinal directional freeze short route equipment for purifying in the present invention.
In Fig. 1, structure represented by each label is: 1---purifying plant, 2---heating unit, 3---purification bell, 4---whipping appts, 5---Purification of Aluminum solid, 6---purifies and is incubated crucible, 7---purification heat-conducting layer, 8---tail aluminium liquid, 9---first heating arrangements, 10---refrigerating unit, 11---vacuum extractor, 12---temperature measuring equipment, 13---heat-eliminating medium exports, 14---thermal insulation layer, 15---heating furnace cover, 16---rotation platform, 17---transmission rig, 18---rotating mechanism, 19---second heating arrangements, 20---melting furnace shell, 21---second vacuum extractor, 22---second temperature measuring equipment, 50---solidifies aluminium solid, 60---heating crucible, 70---heats heat-conducting layer.
Embodiment:
Below in conjunction with accompanying drawing, the present invention will be further explained:
Embodiment 1: see Fig. 1, a kind of rafifinal directional freeze short route equipment for purifying, comprise purifying plant 1 and heating unit 2, purifying plant 1 and heating unit 2 are independent separately, be co-located on a large melting furnace shell 20 inner, purifying plant 1 comprises refrigerating unit 10 from outside to inside successively, purification heat-conducting layer 7, purify and be incubated crucible 6 and whipping appts 4, purification bell 3 is provided with directly over purification insulation crucible 6, vacuum extractor 11 and temperature measuring equipment 12 is respectively arranged with in purification bell 3 both sides, the first heating arrangements 9 is symmetrically arranged with below purification bell 3, the axle center place that whipping appts 4 is positioned at purification bell 3 can horizontally rotate, the bottom of purify insulation crucible 6 and purification heat-conducting layer 7 is provided with heat-eliminating medium outlet 13, heat-eliminating medium outlet 13 is connected with outer loop pond, heating unit 2 is positioned at purifying plant 1 side, heating unit 2 comprises thermal insulation layer 14 from outside to inside successively, heating heat-conducting layer 70 and heating crucible 60, heating furnace cover 15 is provided with directly over heating crucible 60, the second vacuum extractor 21 and the second temperature measuring equipment 22 is respectively arranged with in heating furnace cover 15 both sides, the second heating arrangements 19 is provided with below heating furnace cover 15, rotation platform 16 is provided with bottom heating crucible 60, rotating mechanism 18 is provided with below rotation platform 16, rotating mechanism 18 is by transmission rig 17 driven rotary, and then drive heating crucible 60 and materials inside thereof to rotate.
Wherein: the pivot link of rotating mechanism 18 is connected with rotation platform 16 by screw thread; Purification heat-conducting layer 7 and heating heat-conducting layer 70 form by the braiding of high thermal conductivity graphite fibre, and thickness is 10 ~ 20mm; Refrigerating unit 10 is equidistant is surrounded on described purification heat-conducting layer 7 surrounding.
Embodiment 2: adopt the rafifinal directional freeze short route equipment for purifying described in embodiment 1 to carry out the method for purification of purifying, its concrete steps are as follows:
1. poured into by the raw aluminum liquid melt after refining in the purification insulation crucible 6 in purifying plant 1, closed purification bell 3, opens whipping appts 4 and stirs melt, and starts vacuum extractor 11 and purification is incubated in crucible 6 form vacuum;
Be energized 2. to after raw aluminum liquid melt starts to solidify the first heating arrangements 9, and slowly improve power, melt temperature is controlled between 660 DEG C ~ 680 DEG C by temperature measuring equipment 12, by refrigerating unit 10, pressure cooling is carried out to purification heat-conducting layer 7, control the thermograde of melt solid-liquid interface in purification insulation crucible 6 between 5 DEG C ~ 20 DEG C, crystallization 2 ~ 4 hours;
3. after crystallization terminates, close whipping appts 4, first heating arrangements 9 and refrigerating unit 10, open purification bell 3, after purification insulation crucible 6 is shifted out purifying plant 1, pour out the tail aluminium liquid 8 that in insulation crucible 6 of purifying, grade is low, the solid of now purifying in insulation crucible 6 is the Purification of Aluminum solid 5 of having purified;
4. by said temperature 500 DEG C ~ 550 DEG C purification insulation crucible 6 move into on the rotatable platform 16 in the heating unit 2 of thermal insulation layer 14, closed heating furnace cover 15, purification insulation crucible 6 is now heating crucible 60 in heating unit 2, and Purification of Aluminum solid 5 is and solidifies aluminium solid 50 in heating unit 2;
5. start the second vacuum extractor 21 to make to form vacuum in heating crucible 60, open the second heating arrangements (19) to melt and described solidify aluminium solid (50), control Heating temperature between 750 DEG C ~ 800 DEG C by the second temperature measuring equipment (22), make it remain on aluminium fusing point; Open transmission rig 17 simultaneously, transmission rig 17 drives rotatable platform 16 to rotate by rotating mechanism 18, make to solidify aluminium solid 50 rotary motion in heating unit 2, the burn-off rate of accelerated solidification aluminium solid 50 in heating crucible 60, effectively reduce the oxidational losses of melting process;
6. the rafifinal liquid after fusing is put into purifying plant 1 again together with heating crucible 60, heating crucible 60 is now insulation crucible 6 of purifying, repeating step 1. ~ 5., meet the rafifinal solid of purity requirement until obtain.
Wherein: in insulation crucible 6 of purifying, aluminium liquid holding temperature is 660 DEG C ~ 680 DEG C, and temperature of solidification is 650 DEG C ~ 660 DEG C, and the crystallization rate of freezing interface is 4 ~ 8cm/h.
Be detailed embodiment and the specific operation process of method of purification of the present invention below, but protection scope of the present invention is not limited to following two embodiments (all have employed the purification insulation crucible of 2.5 tons of capacity below in two embodiments):
Embodiment 3: select the refining raw aluminum liquid 2000Kg that purity is at least 99.85%, temperature is 700 DEG C to import in the purification insulation crucible of purifying plant, and purifying plant is airtight, start vacuum unit, make its vacuum tightness reach 10
-3, open whipping appts and rotate melt, revolution remains on 15 ~ 50 turns/min; Start heating unit, power remains on 10 ~ 50kw, ensures that melt temperature is at the uniform velocity lowered the temperature with the speed of 1 DEG C/min, melt temperature is made to remain on 660 DEG C, refrigerating unit starts the cooling that automatically adjusts, and maintains sidepiece crystallization velocity 5cm/h, terminates through 3 hours post crystallizations; Take out insulation crucible of purifying, pour out after wherein remaining tail aluminium liquid, then purifications is incubated crucible and puts into heating unit together with Purification of Aluminum solid and airtight, vacuumize and make its vacuum tightness reach 10
-3, then open heating unit, power remains on 80 ~ 90kw, and heating crucible is rotated in stove, and heat 1 hour temperature and reach 710 DEG C, in crucible, Purification of Aluminum solid is all molten into liquid; Then the crucible being heated to 710 DEG C is moved into purifying plant from heating unit, repeat above-mentioned crystallization and purification, topple over tail aluminium liquid step, obtain the aluminium solid after second time purification, after inspection reaches purity requirement, after smelting furnace fusing, be cast as the product required for user.
Embodiment 4: select the refining raw aluminum liquid 2000Kg that purity is at least 99.90%, temperature is 700 DEG C to import in the crucible of purifying plant, and purifying plant is airtight, start vacuum unit, make its vacuum tightness reach 10
-3, open whipping appts and rotate melt, revolution remains on 15 ~ 50 turns/min; Start heating unit, power remains on 10 ~ 50kw, ensures that melt temperature is at the uniform velocity lowered the temperature with the speed of 1 DEG C/min, melt temperature is made to remain on 660 DEG C, refrigerating unit starts the cooling that automatically adjusts, and maintains sidepiece crystallization velocity 4cm/h, terminates through 3 hours post crystallizations; Take out crucible, pour out after wherein remaining tail aluminium liquid, then crucible is put into heating unit together with Purification of Aluminum solid and airtight, vacuumize and make its vacuum tightness reach 10
-3, then open heating unit, power remains on 80 ~ 90kw, and crucible is rotated in stove, and heat 1 hour temperature and reach 710 DEG C, in crucible, Purification of Aluminum solid is all molten into liquid; Then the crucible this being heated to 710 DEG C moves into purifying plant from heating unit, repeat above-mentioned crystallization and purification, topple over tail aluminium liquid step, obtain the aluminium solid after second time purification, after inspection reaches purity requirement, after smelting furnace fusing, be cast as the product required for user.
Claims (4)
1. a rafifinal directional freeze short route equipment for purifying, comprise purifying plant (1) and heating unit (2), described purifying plant (1) and heating unit (2) are independent separately, be co-located on a large melting furnace shell (20) inner, it is characterized in that: described purifying plant (1) comprises refrigerating unit (10) from outside to inside successively, purification heat-conducting layer (7), purify and be incubated crucible (6) and whipping appts (4), purification bell (3) is provided with directly over described purification insulation crucible (6), vacuum extractor (11) and temperature measuring equipment (12) is respectively arranged with in described purification bell (3) both sides, the first heating arrangements (9) is symmetrically arranged with in the below of described purification bell (3), the axle center place that described whipping appts (4) is positioned at described purification bell (3) can horizontally rotate, described bottom of purifying insulation crucible (6) and purification heat-conducting layer (7) is provided with heat-eliminating medium outlet (13), described heat-eliminating medium outlet (13) is connected with outer loop pond, described heating unit (2) is positioned at the side of described purifying plant (1), described heating unit (2) comprises thermal insulation layer (14) from outside to inside successively, heating heat-conducting layer (70) and heating crucible (60), heating furnace cover (15) is provided with directly over described heating crucible (60), the second vacuum extractor (21) and the second temperature measuring equipment (22) is respectively arranged with in described heating furnace cover (15) both sides, described heating furnace cover (15) below is provided with the second heating arrangements (19), described heating crucible (60) bottom is provided with rotation platform (16), rotating mechanism (18) is provided with below described rotation platform (16), described rotating mechanism (18) is by transmission rig (17) driven rotary, and then drive heating crucible (60) and materials inside thereof to rotate.
2. rafifinal directional freeze short route equipment for purifying according to claim 1, is characterized in that: the pivot link of described rotating mechanism (18) is connected with described rotation platform (16) by screw thread; Described purification heat-conducting layer (7) and heating heat-conducting layer (70) form by the braiding of high thermal conductivity graphite fibre, and thickness is 10 ~ 20mm; Described refrigerating unit (10) is equidistant is surrounded on described purification heat-conducting layer (7) surrounding.
3. adopt the rafifinal directional freeze short route equipment for purifying described in claim 1 or 2 to carry out the method for purification of purifying, its concrete steps are as follows:
1. the raw aluminum liquid melt after refining is poured in purification insulation crucible (6) in purifying plant (1), closed purification bell (3), open whipping appts (4) and stir melt, start vacuum extractor (11) simultaneously and make purification be incubated formation vacuum in crucible (6);
2. after raw aluminum liquid melt starts to solidify, the first heating arrangements (9) energising is given, and slowly improve power, melt temperature is controlled between 660 DEG C ~ 680 DEG C by temperature measuring equipment (12), by refrigerating unit (10), pressure cooling is carried out to purification heat-conducting layer (7), control the thermograde of purification insulation crucible (6) interior melt solid-liquid interface between 5 DEG C ~ 20 DEG C, crystallization 2 ~ 4 hours;
3. after crystallization terminates, close whipping appts (4), the first heating arrangements (9) and refrigerating unit (10), open purification bell (3), after purifying plant (1) is shifted out in purification insulation crucible (6), pour out the tail aluminium liquid (8) that insulation crucible (6) interior grade of purifying is low, now the solid of purifying in insulation crucible (6) is the Purification of Aluminum solid (5) of having purified;
4. purification insulation crucible (6) of said temperature at 500 DEG C ~ 550 DEG C is moved into on the rotatable platform (16) in the heating unit (2) of thermal insulation layer (14), closed heating furnace cover (15), purification insulation crucible (6) is now heating crucible (60) in heating unit (2), and Purification of Aluminum solid (5) is and solidifies aluminium solid (50) in heating unit (2);
5. start the second vacuum extractor (21) to make to form vacuum in heating crucible (60), open the second heating arrangements (19) to melt and described solidify aluminium solid (50), control Heating temperature between 750 DEG C ~ 800 DEG C by the second temperature measuring equipment (22), make it remain on aluminium fusing point; Open transmission rig (17) simultaneously, transmission rig (17) drives rotatable platform (16) to rotate by rotating mechanism (18), make to solidify aluminium solid (50) rotary motion in heating unit (2) in heating crucible (60), the burn-off rate of accelerated solidification aluminium solid (50), effectively reduces the oxidational losses of melting process;
6. the high-purity fine aluminium liquid after fusing is put into purifying plant (1) again together with heating crucible (60), heating crucible (60) is now insulation crucible (6) of purifying, repeating step 1. ~ 5., meet the rafifinal solid of purity requirement until obtain.
4. method of purification according to claim 3, is characterized in that: described purification insulation crucible (6) interior aluminium liquid holding temperature is 660 DEG C ~ 680 DEG C, and temperature of solidification is 650 DEG C ~ 660 DEG C, and the crystallization rate of freezing interface is 4 ~ 8cm/h.
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| CN106152789A (en) * | 2016-08-08 | 2016-11-23 | 无锡蠡湖增压技术股份有限公司 | A kind of aluminum liquid stove vacuum heat-preserving set |
| CN106868316A (en) * | 2017-02-10 | 2017-06-20 | 上海交通大学 | A kind of polynary impurity element synchronous purification method and device of secondary aluminium |
| CN111378850A (en) * | 2020-05-08 | 2020-07-07 | 河南中孚实业股份有限公司 | Method for purifying high-purity aluminum by segregation |
| CN113699383A (en) * | 2021-09-09 | 2021-11-26 | 中国兵器工业第五九研究所 | Method for purifying aluminum alloy melt based on thermal buoyancy |
| CN115572840A (en) * | 2022-09-29 | 2023-01-06 | 吉利百矿集团有限公司 | Method for purifying electrolytic aluminum liquid by segregation method |
| CN116179870A (en) * | 2023-02-15 | 2023-05-30 | 宁波锦越新材料有限公司 | Fractional crystallization high-purity aluminum purification device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106152789A (en) * | 2016-08-08 | 2016-11-23 | 无锡蠡湖增压技术股份有限公司 | A kind of aluminum liquid stove vacuum heat-preserving set |
| CN106868316A (en) * | 2017-02-10 | 2017-06-20 | 上海交通大学 | A kind of polynary impurity element synchronous purification method and device of secondary aluminium |
| CN111378850A (en) * | 2020-05-08 | 2020-07-07 | 河南中孚实业股份有限公司 | Method for purifying high-purity aluminum by segregation |
| CN113699383A (en) * | 2021-09-09 | 2021-11-26 | 中国兵器工业第五九研究所 | Method for purifying aluminum alloy melt based on thermal buoyancy |
| CN115572840A (en) * | 2022-09-29 | 2023-01-06 | 吉利百矿集团有限公司 | Method for purifying electrolytic aluminum liquid by segregation method |
| CN115572840B (en) * | 2022-09-29 | 2024-01-16 | 吉利百矿集团有限公司 | Method for purifying electrolytic aluminum liquid by segregation method |
| CN116179870A (en) * | 2023-02-15 | 2023-05-30 | 宁波锦越新材料有限公司 | Fractional crystallization high-purity aluminum purification device |
| CN116179870B (en) * | 2023-02-15 | 2023-11-03 | 宁波锦越新材料有限公司 | Fractional crystallization high-purity aluminum purification device |
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