CN201003067Y

CN201003067Y - Highly pure aluminium extraction apparatus

Info

Publication number: CN201003067Y
Application number: CNU2006201524594U
Authority: CN
Inventors: 佟福斌; 张福成; 衣庆波
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-25
Filing date: 2006-11-25
Publication date: 2008-01-09
Anticipated expiration: 2016-11-25

Abstract

The utility model discloses a high purity aluminum extraction unit and the structure characteristics are that a vertical blade cylinder furnace jacket, a vertical round table furnace pipe and a lifting mechanism of the furnace pipe are adopted. The three-phase current provided for the furnace pipe flows along the furnace jacket axis direction, so the furnace jacket forms into a stator of the three-phase asynchronous motor, generating an alternating rotary magnetic field; while after the aluminum material in the furnace pipe crucible in the furnace jacket is melted, the aluminum liquid becomes the rotor rotating and stirring around the furnace pipe axis at high speed under the effect of the alternating magnetic field. Then the impurities are separated and pushed to the bottom, and the lifting mechanism lifts the furnace pipe out of the furnace jacket slowly and the high purity aluminum is extracted by slow cooling. As a whole, the model has the advantages of reasonable structure and design, energy conservation, high efficiency and high product purity.

Description

Device for extracting high pure aluminum

One, technical field

The utility model belongs to technical field of casting and metallurgy, is specifically related to a kind of device for extracting high pure aluminum.

Two, background technology

China is aspect the smelting purification of non-ferrous metal at present, general all adopt vacuum technique and electromagnetic induction heating stirring and induction areas and melting pot relative to two kinds of methods that slowly move, be so-called directional solidification method and zone melting method, and in these two kinds of Technologies, mostly adopt the structure of horizontal electromagnetic induction furnace again.And the electromagnetic induction boiler clothing of this kind horizontal chamber oven is a spirrillum, and thermo-efficiency is lower.Liquid aluminium in the crucible is half full state, stir insufficiently, inhomogeneous, purification degree is low to be 99.996% only, in extractive process, refined aluminium back and forth need be drawn through electromagnetic induction furnace and move 3-10 time, even more, the also difficult rafifinal of producing more than 99.9995%, its efficient is low, power consumption is high, yield poorly, cause the production cost height, this has just limited applying of rafifinal.

Three, summary of the invention

The purpose of this utility model provides a kind of product purity height, power consumption is low, production efficiency is high and rational in infrastructure device for extracting high pure aluminum.

For achieving the above object, the utility model adopts following technical scheme: comprise flue, the support of being made up of metal shell and plumbago crucible in electromagnetic induction boiler clothing, the boiler clothing and carry opening mechanism, be characterized in adopting vertical blade round shape boiler clothing and Qi Nei that the flue of vertical truncated cone-shaped is installed; The top of the blade round shape boiler clothing outwards blade end of turnover is the terminals of three-phase electricity, is equipped with thermal insulation layer in the outside of boiler clothing, is equipped with insulation, heat insulation ring washer respectively at upper and lower end; Vertical truncated cone-shaped flue is upper coarse and lower fine structure, and the upper end has the feed inlet and outlet of flange seal; Lifting mechanism is installed in the top of flue.

The utility model is owing to adopted the columnar electromagnetic induction boiler clothing of vertical blade, the blade end on its top inserts three-phase alternating current, this has just changed the sense of current, the electric current of originally horizontal boiler clothing is mobile along the tangential direction of boiler clothing cylinder, and the electric current of present vertical electromagnetic induction boiler clothing is mobile along the axis direction of boiler clothing, and this just makes boiler clothing become the stator of asynchronous motor.After refined aluminium in the boiler clothing in the truncated cone-shaped flue is heated by boiler clothing, being fused into liquid state is filled in the flue, aluminium liquid in the flue crucible just becomes rotor like this, when feeding three-phase alternating current, boiler clothing just forms rotatingfield, make aluminium liquid rotor in the flue crucible, all the time rotate around the flue axis, make the high speed circumferential motion, aluminium liquid is stirred, under centrifugal action, flue is upper coarse and lower fine vertical frustum cone structure in addition, slowly promotes flue this moment, because the liquidus temperature Gradient Effect of pure metal and its impurity at first freezes solidly on the truncated cone-shaped crucible wall on top the liquidus temperature metallic aluminium high than impurity.And liquidus temperature is lower than the impurity of metallic aluminium, and it still keeps liquid under criticality, and is being rotated and pushes the enrichment of flue lower end to, thereby isolates the impurity in the refined aluminium effectively, has obtained rafifinal.Owing to reasonably utilize the complex art effect of aspects such as gravity, electric field, electric heating, hydromeehanics and metallography, make when in fusion process, promoting flue, the freezing interface does not have tomography, and disposable melting was purified more horizontal purifying plant shortening of time more than 3 hours; The purity of disposable melting rafifinal reaches more than 99.9995%, is equivalent to horizontal purifying plant and draws the purity of moving melting 5-15 time; The refined aluminium utilization ratio of raw materials improves 5%; Utilize lifting mechanism that flue is pulled out boiler clothing and cool off outward, energy-conservation, structure is also simplified, and power consumption reduces 1600Kwh/t.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of vertical blade round shape electromagnetic induction boiler clothing.

Five, embodiment

As shown in the figure, electromagnetic induction boiler clothing 7 is the blade round shape, and it is terminals of three-phase electricity that there are 6 blades blade upper end 6, and three-phase electricity inserts boiler clothing 7 thus.Be equipped with refractory insulating layer 5 in boiler clothing 7 outsides, wrap up with tinsel on thermal insulation layer 5 surfaces, is equipped with annular asbestos pad 8 respectively at the upper and lower end of boiler clothing 7, in order to insulation, heat insulation; Flue 9 is upper coarse and lower fine truncated cone-shaped structure.The high-intensity stainless steel plate of flue 9 shells, 3 usefulness is made, so that crucible 1 does not have tomography in the shell when being full of aluminium liquid, during high speed rotating, can finish aluminium liquid and separate impurities and crystallization, the feed inlet and outlet of flue 9 upper flange sealing, be with flange 12, blind flange 14 and the sealing-ring between the two 13, with bolt 23 fit sealings, on blind flange 14, be provided with the endoscope 20 of observing crucible 1 internal state, watercooling jacket 21 and watercooling jacket interface 22, be equipped with watercooling jacket 16 and water jacket interface 11 and valve tube interface 24 on these flue 9 tops, the cover plate 25 that prevents that aluminium liquid from spattering outward that is provided with suitable for reading of the crucible 1 of flue 9 has a vacuum pumping hole 26 that communicates with inner chamber 2 on the cover plate 25; The lifting mechanism of flue 9 is made up of metal chain sling 17, fixed pulley 18, wireline 19 and windlass 27, and lifting mechanism also can adopt bridge overhead travelling crane; Boiler clothing 7 and flue 9 all place on the support 4, and the scantlings of the structure of boiler clothing 7 and flue 9 need and be decided according to the user.10 is supporting cup among the figure, and 15 is expanding reach.

Below with example explanation production process.

The electromagnetic induction boiler clothing 7 diameter 0.35m that this example adopts, high 0.9m, the long 0.75m of blade, wide 0.15m, thick 0.012m.Flue 9 high 1.8m, upper diameter 0.28m, lower diameter 0.20m, expanding reach 15 diameter 0.35m, high 0.2m.Working process is: earlier that normal temperature is clean down aluminium ingot, quantitatively drop in the crucible 1 of flue 9, cover graphite cover plate 25 successively, with bolt 23 clamp flanges lid 14, flue 9 is put into boiler clothing 7, the vacuum pump water pump is connected the vacuum mouth of pipe 24 on the flue 9 respectively,

water jacket interface

11,22, start the vacuum pump pump working, for boiler clothing 7 send, voltage is 3V, electric current 1600A, when 820 ℃ of crucible 1 Nei Wenduda, constant temperature 40 minutes, aluminium liquid high speed rotating stirring and segregation impurity in this moment crucible 1, start windlass 27 then, flue 9 is promoted with the 0.01m/ component velocity, this moment, voltage was adjusted to 2.5V, electric current 1100A, when flue 9 all shifts out boiler clothing 7, stop to open blind flange 14 for boiler clothing 7 power supplies thereupon, take out aluminium ingot, the aluminium ingot that its bottom small part contains impurity can remove, and all the other major parts are the rafifinal more than 99.9995%.After this device enters next production cycle.This device is through probationary certificate, and the refining time is short, and is energy-conservation, efficient, product purity is high, the aluminium that its purification degree is extracted than horizontal type device improve 6-15 doubly more than.

Claims

1, a kind of device for extracting high pure aluminum, comprise electromagnetic induction boiler clothing (7), the flue of forming by metal shell (3) and plumbago crucible (1) in the boiler clothing (7), support (4) and lifting mechanism is characterized in that adopting vertical blade round shape boiler clothing (7) and the flue (9) of vertical truncated cone-shaped have been installed in it; The top of blade round shape boiler clothing (7) the outwards blade end (6) of turnover is the terminals of three-phase electricity, is equipped with thermal insulation layer (5) in the outside of boiler clothing (7), is equipped with insulation, heat insulation ring washer (8) respectively at upper and lower end; Vertical truncated cone-shaped flue (9) is upper coarse and lower fine structure, and the upper end has the feed inlet and outlet of flange seal; Lifting mechanism is installed in the top of flue (9).

2, according to the described device for extracting high pure aluminum of claim 1, it is characterized in that the feed inlet and outlet on flue (9) top, be with the flange above it (12), blind flange (14) and the sealing-ring between the two (13), usefulness bolt (23) fit sealing.

3,, it is characterized in that on blind flange (14), being provided with endoscope (20), watercooling jacket (21) and the water coolant interface (22) of observing crucible (1) internal state according to claim 1 or 2 described device for extracting high pure aluminum.

4,, it is characterized in that being equipped with watercooling jacket (16), water jacket interface (11) and valve tube interface (24) on flue (9) top according to the described device for extracting high pure aluminum of claim 1.

5, according to the described device for extracting high pure aluminum of claim 1, it is characterized in that suitable for reading at the crucible (1) of flue (9) being provided with the cover plate (25) that anti-aluminium liquid spills, have a vacuum pumping hole (26) that communicates with inner chamber (2) on the cover plate (25).