CN204224679U - Rafifinal directional freeze short route equipment for purifying - Google Patents
Rafifinal directional freeze short route equipment for purifying Download PDFInfo
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- CN204224679U CN204224679U CN201420728053.0U CN201420728053U CN204224679U CN 204224679 U CN204224679 U CN 204224679U CN 201420728053 U CN201420728053 U CN 201420728053U CN 204224679 U CN204224679 U CN 204224679U
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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
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Abstract
The utility model discloses a kind of rafifinal directional freeze short route equipment for purifying, comprise respective independently purifying plant and heating unit, described purifying plant comprises refrigerating unit, purification heat-conducting layer, purify insulation crucible and whipping appts, purification bell is provided with directly over purification insulation crucible, be respectively equipped with vacuum extractor and temperature measuring equipment in purification bell both sides, below purification bell, be provided with the first heating arrangements; Described heating unit comprises thermal insulation layer, heating heat-conducting layer and heating crucible, heating furnace cover is provided with directly over heating crucible, vacuum extractor and temperature measuring equipment is respectively equipped with in heating furnace cover both sides, the second heating arrangements is provided with below heating furnace cover, rotation platform and rotating mechanism is provided with bottom heating crucible, rotating mechanism by transmission rig driven rotary, and then drives heating crucible and materials inside to rotate.Adopt the utility model greatly can improve the purification efficiency of rafifinal, there is the advantage that energy consumption is low, treatment capacity is large, efficiency is high, product purity is high.
Description
Technical field:
The utility model relates to a kind of fine aluminium equipment for purifying, particularly relates to a kind of rafifinal directional freeze short route equipment for purifying, belongs 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, quantity of material 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.
Utility model content:
Technical problem to be solved in the utility model is: the deficiency existed for prior art, a kind of rafifinal directional freeze short route equipment for purifying is provided, this equipment is adopted to carry out the purifying technique of rafifinal, 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 utility model is taked 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.
Purifying plant and heating unit are arranged to separate two portions by the utility model, 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.Adopt the utility model greatly can improve the purification efficiency of rafifinal, there is the advantage that energy consumption is low, treatment capacity is large, efficiency is high, product purity is high.
Whipping appts of the present utility model 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 utility model and the second heating arrangements all can adopt electric heater, also can adopt gas heating system.
Refrigerating unit of the present utility model 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.
Accompanying drawing explanation
Fig. 1 is using state structural representation of the present utility model.
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 utility model is made further explanation:
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.
Adopt above-mentioned rafifinal directional freeze short route equipment for purifying 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 650 DEG C ~ 660 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 and described solidify aluminium solid 50 to melt, 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.
The utility model is by being arranged to separate two portions by purifying plant 1 and heating unit 2, 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 2 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.Adopt the utility model greatly can improve the purification efficiency of rafifinal, there is the advantage that energy consumption is low, treatment capacity is large, efficiency is high, product purity is high.
Claims (2)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728053.0U CN204224679U (en) | 2014-11-28 | 2014-11-28 | Rafifinal directional freeze short route equipment for purifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728053.0U CN204224679U (en) | 2014-11-28 | 2014-11-28 | Rafifinal directional freeze short route equipment for purifying |
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| Publication Number | Publication Date |
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| CN204224679U true CN204224679U (en) | 2015-03-25 |
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| CN201420728053.0U Withdrawn - After Issue CN204224679U (en) | 2014-11-28 | 2014-11-28 | Rafifinal directional freeze short route equipment for purifying |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561591A (en) * | 2014-11-28 | 2015-04-29 | 河南中孚实业股份有限公司 | Directional solidification short process purification equipment and purification method of high-purity aluminum |
| CN105716419A (en) * | 2016-02-26 | 2016-06-29 | 铜陵安东铸钢有限责任公司 | Aluminum alloy steel smelting device |
| 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 |
-
2014
- 2014-11-28 CN CN201420728053.0U patent/CN204224679U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561591A (en) * | 2014-11-28 | 2015-04-29 | 河南中孚实业股份有限公司 | Directional solidification short process purification equipment and purification method of high-purity aluminum |
| CN104561591B (en) * | 2014-11-28 | 2016-08-24 | 河南中孚实业股份有限公司 | Rafifinal directional solidification short route equipment for purifying and method of purification |
| CN105716419A (en) * | 2016-02-26 | 2016-06-29 | 铜陵安东铸钢有限责任公司 | Aluminum alloy steel smelting device |
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20160824 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |