CN104722387A - Discarded metal particle dry method gravity concentration separation method - Google Patents
Discarded metal particle dry method gravity concentration separation method Download PDFInfo
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- CN104722387A CN104722387A CN201410777313.8A CN201410777313A CN104722387A CN 104722387 A CN104722387 A CN 104722387A CN 201410777313 A CN201410777313 A CN 201410777313A CN 104722387 A CN104722387 A CN 104722387A
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Abstract
The invention discloses a discarded metal particle dry method gravity concentration separation method. A main method for extracting aluminum includes the steps that ball-milling is conducted on eddy current separation substances serving as raw materials, the ball-milled substances are scanned, and blocks and powder are separated; iron, copper, glass, ceramic and the like in the blocks are separated from coarse aluminum blocks; a residual aluminum separating agent composed of halide is added to a smelting furnace and heated to become fused salt, the coarse aluminum blocks are then added to be stirred, impurity slag in the coarse aluminum enters an upper-layer fused salt phase, and molten aluminum sinks to the bottom of the furnace; the molten aluminum is then rapidly drained into an iron casting die and solidified, and therefore an aluminum ingot with the aluminum content over 96% is acquired. After being used multiple times, the residual aluminum separating agent is separated from the insoluble slag through a water-dissolving method, and the residual aluminum separating agent is recycled after being dewatered. The method has the advantages that the process is simple, operation is convenient, the recovery rate of the aluminum is high, and the aluminum in waste incineration slag is reclaimed.
Description
Technical field
The present invention relates to a kind of method that metalliferous material dry method gravity preparation is separated, belong to metalliferous material physical separation processing technology field.
Background technology
First the sorting of solid material is the needs processed by mineral and the procedure proposed.Along with its development is with ripe, define gradually one ' solid material sorting subject ', and be extended to the sorting of the solid material of the required sorting such as ore, coal, construction material, chemical materials, industrial residue, house refuse.And along with the development of science and technology, the physics between defining gradually according to composition different in material and the difference of chemical property and the 5 large class method for separating that occur.The rough classification of its conventional method for separating, as shown in table 1:
Because reselecting method equipment is simple, do not expend precious materials and expensive equipment, production capacity is large, compared with other method for separating, production cost is low, and environmental pollution is little, so reselecting method is often paid the utmost attention to, and the method for separating of waste aluminium material for bulk, the application of more good reselecting method.The waste aluminium pledge material sorting that the heavy-media suspension of the two-phase fluid that namely dense medium separation method forms using high density, fine grained dense media and water is implemented as medium.Domestic at present have enterprise to adopt to be everlasting ore and gangue in mining industry to divide to choose the heavy-media suspension of the ferrosilicon powder+water of application to carry out the sorting of waste aluminium material.During application, as the ferrosilicon powder addition of dense media up to 30-40%, so many ferrosilicon powder be made in water to realize even suspension, have very large difficulty.Therefore, the stability that it suspends in water and uniformity, become the separating effect of this heavy-media suspension--and there is the principal element of fluctuation in the rate of recovery.Practice shows, although the measure such as magnetic separation and cleaning that have employed makes most of ferrosilicon powder (97-98%) obtain recovery, but due to when cleaning the aluminium material sub-elected, often be difficult to remove completely and remain in ferrosilicon powder in wet aluminium material (according to statistics, about residual quantity has 2-3%), these ferrosilicon powders are just likely along with aluminium material enters smelting furnace, and dissolve in aluminum melt, and cause the iron-holder in aluminum melt to increase (iron-holder of this point of ferrosilicon powder selected is up to more than 80%), the quality of aluminium ingot is significantly declined, also consume the ferrosilicon powder of significant proportion simultaneously, cause the low in economic efficiency of this gravity treatment, be difficult to obtain large-area popularization.
As everyone knows, water is the material abstained from most in aluminium alloy smelting.Once water enters in aluminium melting pond, will with aluminium liquid intense reaction, produce a large amount of hydrogen and aluminium oxide, the metallurgical quality of infringement aluminium liquid, also can blast time serious.But, the heavy-media suspension of the ferrosilicon powder+water of application carries out the sorting of waste aluminium material, a large amount of water is needed to participate in this sorting flow process, this not only consumes a large amount of water, the problem of water pollutions is brought to environment, and the aluminium scrap material surface adhesion sub-elected has many moisture, if do not remove these moisture just there will be above-described problem.Therefore, after sorting, usually also need increase one baking operation, dry to guarantee the aluminium scrap material adding smelting furnace, this produces to secondary aluminium again and brings extra baking operation cost and energy consumption.
The present invention is exactly for above-mentioned reselecting method Problems existing, propose a kind of dry separation method, select the solid mineral material of high density, fine grained, physics and chemistry stable in properties as high density separating medium, be aided with the active force of mechanical oscillation and air flowing, make it to seethe up and down and flow, form the Bed that gravity treatment medium moves forward.In discarded metal pellet assorting room, the discarded metal pellet that need be separated is in Bed, and high density separating medium is in suspended state together, and moves to lower exit direction.The discarded metal pellet that density is little moves up, and floats above device, together with high density separating medium, flows out from the light metal Pellet exit of top; The discarded metal pellet that density is large sinks to bottom, and together with the ore grain of high density separating medium, heavy metal Pellet exit from below flows out.Through screening, the ore grain of high density separating medium is sifted out reuse, meanwhile, achieves the separation of the discarded metal pellet of different densities.
Summary of the invention
The method that the discarded metal pellet dry method gravity preparation that the present invention relates to a kind of different densities is separated, belongs to metalliferous material physical separation processing technology field.The feature of the method is: select specific density between discarded high and low density metal pellet ore grain as separating medium, be placed on special pore plate, by setting in the tilting vibration platform apparatus of vibration frequency and amplitude, under gravity, vibration force and uniform updraft active force, high density separating medium and selected metal pellet are in suspended state, and travel forward.At the volley, the discarded metal pellet that density is little moves up, and floats above device, together with high density separating medium ore grain, flows out from the light metal Pellet exit of top; The discarded metal pellet that density is large sinks to bottom, and together with high density separating medium ore grain, heavy metal Pellet exit from below flows out.Through screening, high density separating medium ore grain is sifted out reuse, meanwhile, achieves the separation of the discarded metal pellet of different weight.
The method that a kind of metal pellet of the present invention dry method gravity preparation is separated, is characterized in that the method comprises following technical process and step:
A. by density at 3000 ~ 8000KG/M
3moisture-free, physics, stable chemical nature, Mohs' hardness >6.5, granular size is the ore grain of 50 ~ 270 orders (screen size is 0.425 ~ 0.053mm), and also referred to as high density separating medium ore grain, putting into vibration frequency range is 20 ~ 2000Hz, Oscillation Amplitude scope is 1 ~ 200mm, and range of tilt angles is in the Bed of 10 ~ 70 degree; The bottom of Bed is provided with orifice plate, and the aperture size of orifice plate is 20 ~ 2000 μm; Pressure limit is that 1 ~ 20 atmospheric compressed air enters container by orifice plate; Make mineral grain, seethe with excitement up and down, and move forward, form high density separating medium Bed;
The density that b. need be separated is greater than the low density metals granule mixture that the high desnity metal of separating medium ore grain and density is less than separating medium ore grain and puts into Bed, and high desnity metal particle is done downwards and travelled forward in Bed; Low density metals particle is done upwards and is travelled forward in Bed;
C. high desnity metal particle is limited in, below height fragmenting plate, being flowed out by heavy metal Pellet exit in company with high density separating medium ore grain; Low density metals particle is limited in, above height fragmenting plate, being flowed out by light metal Pellet exit in company with high density separating medium ore grain.
D. by the material that heavy metal Pellet exit and light metal Pellet exit flow out, screening obtains the discarded metal pellet of different densities, reaches the object of different densities metal separation, and sieving the high density separating medium ore grain stayed can direct reuse.
The special purpose device that a kind of discarded metal pellet dry method gravity separation method is used.Its critical piece includes: tilting Bed, compressed air pass into pore plate, height adjustable flow distribution plate, spring vibration device and air compressor; It is characterized in that: bottom tilting Bed, be provided with pore plate, two ends, bottom are provided with spring vibration device; Be provided with compressed air inlet in device lower end, ground level is fixed with air compressor, and be attached thereto by tracheae; Metal mixed material entrance is provided with, high-density medium entrance on device top; Light metal pellet is distributed with, heavy metal pellet, high density sorting ore grain medium in Bed; Be provided with height adjustable fragmenting plate in device front end, below front end, be provided with light metal Pellet exit and heavy metal Pellet exit.
The feature that the present invention has and advantage
1. the present invention adopts the discarded metal of physical method for separation different densities, does not relate to any liquid, does not produce any water pollutions; Only produce minute quantity dust, can be collected by conventional dust pelletizing system, avoid the pollution to environment.
2. the high density separating medium moisture-free of the present invention's employing, the mineral grain of physics, stable chemical performance, does not almost have loss in whole flow process, and recycling rate reaches more than 99%.
3. the material being drying involved in technological process of the present invention, is easy to screening; Technological process is simple, reliable; Production cost is very low, is applicable to large-scale production.
Accompanying drawing explanation
Fig. 1 is the present invention's high density sorting unit schematic diagram used.
Detailed description of the invention
After now specific embodiments of the invention being described in.
Embodiment one
Containing copper alloy and aluminium alloy two kinds of metals in a collection of discarded hybrid metal pellet.The density of copper alloy is 8900 KG/M
3, be high desnity metal; The density of aluminium alloy is 2700 KG/M
3, be low density metals, then select chromite sand, density is 4400 KG/M
3, Mohs' hardness >6.5 is as separating medium.The density of separating medium between high and low density metal, and has 1000 KG/M
3above gap.
A. by density at 4400KG/M
3moisture-free, physics, stable chemical nature, Mohs' hardness >6.5, granular size is 150 object chromite sand particles, and also referred to as high density separating medium 8, putting into vibration frequency range is 200Hz, Oscillation Amplitude scope is 5mm, and range of tilt angles is in the Bed 12 of 30 degree.The bottom of Bed is provided with orifice plate 9, and the aperture size of orifice plate is 50 μm; Pressure limit is that 5 atmospheric compressed air enter Bed 12 by orifice plate; Make high density separating medium 8, under vibration, air-flow and Action of Gravity Field, quasi-fluid seethes with excitement up and down, and the component produced due to formation inclined-plane, angle of inclination, move forward, form high density separating medium Bed.
The density that b. need be separated is greater than the mixture that the copper alloy pellet of separating medium and density is less than the aluminium alloy pellet of separating medium and puts into Bed, under the drive of high density separating medium, high desnity metal particle 5 is done downwards and is travelled forward in Bed; Low density metals particle 4 is done upwards and is travelled forward in Bed.
C. high desnity metal particle is limited in, below height adjustable fragmenting plate 3, being flowed out by heavy metal Pellet exit 1 in company with high density separating medium; Low density metals particle is limited in, above height adjustable fragmenting plate 3, being flowed out by light metal Pellet exit 2 in company with high density separating medium.
D. by the material that heavy metal Pellet exit 1 and light metal Pellet exit 2 flow out, screening obtains the discarded metal pellet of different densities, reaches the object of different densities metal separation; Sieving the high density separating medium stayed can direct reuse.
Claims (2)
1. a method for discarded metal pellet dry method gravity preparation separation, is characterized in that the method has following technical process and step:
A. by density at 3000 ~ 8000KG/M
3moisture-free, physics, stable chemical nature, Mohs' hardness >6.5, granular size is the ore grain of 50 ~ 270 orders (screen size is 0.425 ~ 0.053mm), and also referred to as high density separating medium ore grain, putting into vibration frequency range is 20 ~ 2000Hz, Oscillation Amplitude scope is 1 ~ 200mm, and range of tilt angles is in the Bed of 10 ~ 70 degree; The bottom of Bed is provided with orifice plate, and the aperture size of orifice plate is 20 ~ 2000 μm; Pressure limit is that 1 ~ 20 atmospheric compressed air enters container by orifice plate; Make mineral grain, seethe with excitement up and down, and move forward, form high density separating medium Bed;
The density that b. need be separated is greater than the low density metals granule mixture that the high desnity metal of separating medium ore grain and density is less than separating medium ore grain and puts into Bed, and high desnity metal particle is done downwards and travelled forward in Bed; Low density metals particle is done upwards and is travelled forward in Bed;
C. high desnity metal particle is limited in, below height fragmenting plate, being flowed out by heavy metal Pellet exit in company with high density separating medium ore grain; Low density metals particle is limited in, above height fragmenting plate, being flowed out by light metal Pellet exit in company with high density separating medium ore grain
D. by the material that heavy metal Pellet exit and light metal Pellet exit flow out, screening obtains the discarded metal pellet of different densities, reaches the object of different densities metal separation, and sieving the high density separating medium ore grain stayed can direct reuse
The special purpose device that discarded metal pellet dry method gravity preparation separation method is used, its critical piece includes: tilting Bed, compressed air pass into pore plate, height flow distribution plate, spring vibration device and air compressor; It is characterized in that: tilting Bed (12) bottom is provided with pore plate (9), is provided with spring vibration device (13) at two ends, bottom; Be provided with compressed air inlet (14) in device lower end, ground level (10) be fixed with air compressor (11), and be attached thereto by tracheae; Metal mixed material entrance (6) is provided with, high-density medium entrance (7) on device top; Light metal pellet (4) is distributed with, heavy metal pellet (5), high density separating medium ore grain (8) in Bed.
2. be provided with adjustment height fragmenting plate (3) in device front end, below front end, be provided with light metal Pellet exit (2) and heavy metal Pellet exit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410777313.8A CN104722387A (en) | 2014-12-17 | 2014-12-17 | Discarded metal particle dry method gravity concentration separation method |
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| CN201410777313.8A CN104722387A (en) | 2014-12-17 | 2014-12-17 | Discarded metal particle dry method gravity concentration separation method |
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| CN104722387A true CN104722387A (en) | 2015-06-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378305A (en) * | 2016-11-28 | 2017-02-08 | 吴保康 | Quartz sand filter media preparing and screening device for sewage treatment |
| CN106694204A (en) * | 2017-01-13 | 2017-05-24 | 中国矿业大学 | Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed |
| CN112058664A (en) * | 2020-09-11 | 2020-12-11 | 李尊德 | Method for dry gravity separation of mixed metals |
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| US4194917A (en) * | 1977-06-14 | 1980-03-25 | Asahi Glass Company, Ltd. | Fired ceramic having dense and low thermal expansion characteristics |
| CN1085830A (en) * | 1992-10-16 | 1994-04-27 | 中国矿业大学 | Large air fluidized bed for separating heavy solids medium |
| CN1099318A (en) * | 1993-02-15 | 1995-03-01 | 中国矿业大学 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
| CN1454718A (en) * | 2002-04-30 | 2003-11-12 | 冈山大学 | Dry sorting method and separating apparatus |
| CN104114290A (en) * | 2012-01-05 | 2014-10-22 | 永田工程株式会社 | Dry separation method and dry separation device |
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2014
- 2014-12-17 CN CN201410777313.8A patent/CN104722387A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194917A (en) * | 1977-06-14 | 1980-03-25 | Asahi Glass Company, Ltd. | Fired ceramic having dense and low thermal expansion characteristics |
| CN1085830A (en) * | 1992-10-16 | 1994-04-27 | 中国矿业大学 | Large air fluidized bed for separating heavy solids medium |
| CN1099318A (en) * | 1993-02-15 | 1995-03-01 | 中国矿业大学 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
| CN1454718A (en) * | 2002-04-30 | 2003-11-12 | 冈山大学 | Dry sorting method and separating apparatus |
| CN104114290A (en) * | 2012-01-05 | 2014-10-22 | 永田工程株式会社 | Dry separation method and dry separation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378305A (en) * | 2016-11-28 | 2017-02-08 | 吴保康 | Quartz sand filter media preparing and screening device for sewage treatment |
| CN106378305B (en) * | 2016-11-28 | 2019-04-12 | 吴保康 | A kind of sewage treatment prepares screening plant with quartz sand filter media |
| CN106694204A (en) * | 2017-01-13 | 2017-05-24 | 中国矿业大学 | Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed |
| CN112058664A (en) * | 2020-09-11 | 2020-12-11 | 李尊德 | Method for dry gravity separation of mixed metals |
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Application publication date: 20150624 |