CN206986257U - A kind of system that aluminum oxide is extracted from hot metallurgical slag - Google Patents
A kind of system that aluminum oxide is extracted from hot metallurgical slag Download PDFInfo
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- CN206986257U CN206986257U CN201720608743.6U CN201720608743U CN206986257U CN 206986257 U CN206986257 U CN 206986257U CN 201720608743 U CN201720608743 U CN 201720608743U CN 206986257 U CN206986257 U CN 206986257U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
A kind of system that aluminum oxide is extracted from hot metallurgical slag is the utility model is related to, comprising：Attemperator, blowing device, cooling device, fine mill and leaching device.By system of the present utility model, the utility model can realize making full use of for the energy, so as to significantly reduce energy consumption, and directly can be used powder, and then save raw material shaping cost, so as to significantly reduce production cost.
Description
Technical field
Resource regeneration field is the utility model is related to, and relates more specifically to one kind and is extracted from hot metallurgical slag
The system of aluminum oxide.
Background technology
China's iron ore deposit has " poor ", " thin ", the main feature of " miscellaneous ", average Iron grade 32%, iron average than the world
Grade is low 11 percentage points.Primary raw material of the iron ore as steel industry, it usually needs could enter after beneficiation enrichment
Blast furnace process.With the fast development of steel and iron industry, some easily select iron ore and the higher rich ore of Iron grade constantly to consume.Therefore such as
What effective exploitation is given up using some Low-grade and hard-to-separate iron ores (such as bauxite, high-phosphor oolitic hematite etc.) and some industrial solids
Gurry (such as the iron-containing resource such as Bayer process red mud, copper ashes, nickel slag, lead and zinc smelting dreg) turns into main research direction.
By retrieving existing literature and patent, these iron content are handled by tunnel cave, rotary kiln, shaft furnace or rotary hearth furnace
Resource produces metallized pellet, and then the technique of molten mitogenetic production molten iron.Temperature needed for these techniques is higher, can only be provided from iron content
Ferro element is reclaimed in source, and is not made full use of by hot melting slag caused by this flow, is become a kind of secondary
Solid waste.
The temperature of this hot metallurgical slag is at 1500 DEG C or so, self-contained substantial amounts of physical thermal, but in cooling procedure
In these heats be not utilized effectively, cause wasting for the energy.It is assumed that these a large amount of waste heats are utilized, then
Conversion is gone back equivalent to saving considerable chemical fuel and reducing agent, you can has been reached energy-saving purpose, can also have been dropped
Low production cost.
Accordingly, it is desirable to propose a kind of new system to handle hot metallurgical slag, aluminium element is reclaimed, realizes resource
Comprehensive utilization.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of system that aluminum oxide is extracted from hot metallurgical slag.
According to one side of the present utility model, there is provided a kind of system that aluminum oxide is extracted from hot metallurgical slag, comprising：
Attemperator, attemperator are provided with hot metallurgical slag entrance, calcium system additive and sodium carbonate entrance and mixing
Material outlet；
Blowing device, blowing device is arranged on calcium system additive and sodium carbonate porch, and the injection mouth of blowing device is just
To calcium system additive and sodium carbonate entrance, calcium system additive and sodium carbonate are added to insulation dress by blowing device in a manner of being blown
In putting；
Cooling device, cooling device be provided with mixed material entrance and cooling material outlet, mixed material entrance with it is described
Mixed material outlet；
Fine mill, fine mill are provided with cooling material inlet and levigate material outlet, cooling material inlet with it is described
Cool down material outlet；And
Leaching device, leaching device are provided with levigate material inlet, leachate outlet and leached mud outlet, levigate material and entered
Mouth connects with levigate material outlet.
According to one embodiment of the present utility model, mixing rabbling mechanism is provided with attemperator.
According to one embodiment of the present utility model, cooling device includes thing accommodating cavity to be cooled and cooling medium loop,
Cooling medium loop is arranged in thing accommodating cavity to be cooled.
According to one embodiment of the present utility model, cooling medium loop is set in the shape of a spiral in thing accommodating cavity to be cooled
Put.
According to one embodiment of the present utility model, cooling device includes thing accommodating cavity to be cooled and cooling medium loop,
Cooling medium loop is arranged in the cavity wall of thing accommodating cavity to be cooled.
In addition, the method for extracting aluminum oxide from hot metallurgical slag using said system is generally：First by hot smelting
Golden slag and additive (calcium system additive and sodium carbonate) mix by a certain percentage, and are incubated 60min-90min and obtain mixed material,
Then mixed material is cooled down, it is levigate to use alkali lye dissolution, you can aluminum oxide is molten after material to be mixed is cooled to room temperature
Go out, so as to realize the recycling of aluminium element.
Specifically, a kind of method that aluminum oxide is extracted from hot metallurgical slag, comprising：
Hot metallurgical slag, calcium system additive and sodium carbonate are mixed and are incubated in proportion, obtains mixed material；
Mixed material is cooled down, obtains cooling down material；
Cooling material is worn into fine powder, obtains levigate material；
Levigate material is leached with base extraction, obtains the leachate containing aluminum oxide.
According to one embodiment of the present utility model, the hot temperature of hot metallurgical slag is 1300 DEG C -1500 DEG C.
According to one embodiment of the present utility model, by hot metallurgical slag, calcium system additive and sodium carbonate according to hot smelting
The ratio mixing of the golden parts by weight of slag 70, calcium system additive 35-49 parts by weight and sodium carbonate 17.5-35 parts by weight.
According to one embodiment of the present utility model, in mixed material, n (Na2O)/n(Al2O3)=1；And n (CaO)/n
(SiO2)=2.
According to one embodiment of the present utility model, full weight of iron fraction is 1%-3% in hot metallurgical slag.
According to one embodiment of the present utility model, calcium system additive is in quick lime, lime stone, calcium carbonate and dolomite
One or more, granularity is in below 0.074mm.
According to one embodiment of the present utility model, the time of insulation is 60min-90min.
According to one embodiment of the present utility model, the granularity of levigate material accounts for 70%-90% in below 0.074mm.
According to one embodiment of the present utility model, alkali lye composition is NaOH and/or KOH.
According to one embodiment of the present utility model, NaOH or KOH concentration are 30-50g/L.
By using above-mentioned technical proposal, the utility model has the following advantages that compared to prior art：
1) the utility model proposes system added by the way that the heat of hot metallurgical slag is used for into hot metallurgical slag and calcium system
Agent and the reaction of sodium carbonate, it is possible to achieve the energy makes full use of, so as to significantly reduce energy consumption.
2) by system of the present utility model, the utility model directly can be used powder, and then save original
Material shaping cost, so as to significantly reduce production cost.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage are in the description carried out to embodiment is combined with accompanying drawing
It will be apparent from and be readily appreciated that, wherein：
Fig. 1 shows the schematic diagram of the system of the present utility model that aluminum oxide is extracted from hot metallurgical slag.
Description of reference numerals
1 attemperator, 11 hot metallurgical entrances, 12 calcium system additives and sodium carbonate entrance, the outlet of 13 mixed materials, 2 sprays
Blowing apparatus, 3 cooling devices, 31 mixed material entrances, 32 cooling material outlets, 4 fine mills, 41 cooling material inlets, 42 mills
Thin material outlet, 5 leaching devices, 51 levigate material inlets, the outlet of 52 leachates, the outlet of 53 leached muds.
Embodiment
It should be appreciated that shown embodiment of the present utility model is merely illustrative in the exemplary embodiment.Although
Only a small number of embodiments are described in detail in the utility model, but those skilled in the art are readily appreciated that and taken off in not essence
In the case of teaching from the utility model theme, a variety of modifications are feasible.Correspondingly, all such modifications should all be wrapped
Include in the scope of the utility model.In the case where not departing from purport of the present utility model, following exemplary can be implemented
Design, operating condition and parameter of example etc. make others and replace, change, change and delete.
Reference picture 1, the utility model provide a kind of system that aluminum oxide is extracted from hot metallurgical slag, comprising：Insulation dress
1 is put, attemperator 1 is provided with hot metallurgical slag entrance 11, calcium system additive and sodium carbonate entrance 12 and mixed material outlet
13；Blowing device 2, blowing device 2 connect with calcium system additive and sodium carbonate entrance 12, blowing device 2 by calcium system additive and
Sodium carbonate is added in a manner of being blown in attemperator 1；Cooling device 3, cooling device 3 are provided with the He of mixed material entrance 31
Material outlet 32 is cooled down, mixed material entrance 31 connects with mixed material outlet 13；Fine mill 4, fine mill 4 are provided with cold
But material inlet 41 and levigate material outlet 42, cooling material inlet 41 connect with cooling material outlet 32；And leaching device
5, leaching device 5 is provided with levigate material inlet 51, leachate outlet 52 and leached mud outlet 53, levigate material inlet 51 and mill
Thin material outlet 42 connects.
Mixing rabbling mechanism is provided with said system, attemperator 1, various raw materials are well mixed by attemperator 1
And it is incubated.
In said system, cooling device 3 includes thing accommodating cavity to be cooled and cooling medium loop, and cooling medium loop is set
Put in thing accommodating cavity to be cooled.
In said system, cooling medium loop is set in the shape of a spiral in thing accommodating cavity to be cooled.
In said system, cooling device 3 includes thing accommodating cavity to be cooled and cooling medium loop, and cooling medium loop is set
Put in the cavity wall of thing accommodating cavity to be cooled.
In addition, the method for aluminum oxide is extracted from hot metallurgical slag using system of the present utility model, comprising：Height is warmed
State metallurgical slag, calcium system additive and sodium carbonate are mixed and are incubated in proportion, obtain mixed material；Mixed material is cooled down,
Obtain cooling down material；Cooling material is worn into fine powder, obtains levigate material；Levigate material is leached with base extraction, contained
There is the leachate of aluminum oxide.
In the above-mentioned methods, the hot temperature of the hot metallurgical slag of high temperature is 1300 DEG C -1500 DEG C.
In the above-mentioned methods, by hot metallurgical slag, calcium system additive and sodium carbonate according to the hot parts by weight of metallurgical slag 70, calcium
It is the ratio mixing of additive 35-49 parts by weight and sodium carbonate 17.5-35 parts by weight.
In the above-mentioned methods, in mixed material, n (Na2O)/n(Al2O3)=1；And n (CaO)/n (SiO2)=2.
In the above-mentioned methods, full weight of iron fraction is 1%-3% in hot metallurgical slag.
In the above-mentioned methods, calcium system additive is the one or more in quick lime, lime stone, calcium carbonate and dolomite,
Granularity is in below 0.074mm.
In the above-mentioned methods, the time of insulation is 60min-90min.
In the above-mentioned methods, the granularity of levigate material accounts for 70%-90% in below 0.074mm.
In the above-mentioned methods, alkali lye composition is NaOH and/or KOH.
In the above-mentioned methods, NaOH or KOH concentration is 30-50g/L.
By the systems and methods, the final alumina recovery rate of the utility model is up to 85%-90%, so as to realize aluminium
The comprehensive reutilization of element.
Raw material proportioning of the present utility model can by the composition adjustment of mixed material to the scope for being advantageous to alumina leaching,
So as to realize the recovery of aluminium element.The heat that the hot metallurgical slag of the utility model temperature range contains is higher, and slag is in a liquid state, can
So that calcium system additive and sodium carbonate and hot metallurgical slag, which are sufficiently mixed, uniformly, makes the composition adjustment of mixed material to suitable model
Enclose.If temperature is less than this temperature range, slag is in semi-molten state or solid-state, and calcium system additive and sodium carbonate can not be fully mixed with slag
Close.
Referring to specific embodiment, the utility model is illustrated.
Embodiment 1
Reference picture 1, by full weight of iron fraction is 1% and hot temperature is 1300 DEG C the hot melting slag of lead and zinc smelting dreg,
Lime stone and sodium carbonate mix according to the ratio of the hot parts by weight of melting slag 70, the parts by weight of lime stone 35 and the parts by weight of sodium carbonate 20
Close, make n (Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 60min is incubated, mixed material is obtained, then will
Mixed material is cooled to room temperature, and the material after cooling then is worn into fine powder accounts for 70% to granularity in below 0.074mm, then
The NaOH alkali lye for being 30g/L with concentration is leached, you can to obtain the leachate containing aluminum oxide, so as to realize aluminium element
Recycle.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 86.7%.
Embodiment 2
Reference picture 1, by full weight of iron fraction is 1.57% and hot temperature is 1400 DEG C the hot melting slag of red mud, lime
Stone and sodium carbonate mix according to the ratio of the hot parts by weight of melting slag 70, the parts by weight of lime stone 38.5 and the parts by weight of sodium carbonate 19.6
Close, make n (Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 75min is incubated, mixed material is obtained, then will
Mixed material is cooled to room temperature, and the material after cooling then is worn into fine powder accounts for 70% to granularity in below 0.074mm, then
The NaOH alkali lye for being 40g/L with concentration is leached, you can to obtain the leachate containing aluminum oxide, so as to realize aluminium element
Recycle.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 85%.
Embodiment 3
Reference picture 1, by full weight of iron fraction is 1.83% and hot temperature is 1450 DEG C the hot melting slag of lateritic nickel ore,
Quick lime and sodium carbonate according to the hot parts by weight of melting slag 70, the parts by weight of quick lime 43.4 and the parts by weight of sodium carbonate 21.7 ratio
Mixing, makes n (Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 70min is incubated, mixed material is obtained, then
Mixed material is cooled to room temperature, the material after cooling then is worn into fine powder accounts for 78% to granularity in below 0.074mm, so
The KOH alkali lye for being afterwards 40g/L with concentration is leached, you can to obtain the leachate containing aluminum oxide, so as to realize aluminium element
Recycling.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 87%.
Embodiment 4
Reference picture 1, by full weight of iron fraction is 2.60% and hot temperature is 1420 DEG C the hot melting slag of copper ashes, white clouds
Stone and sodium carbonate mix according to the ratio of the hot parts by weight of melting slag 70, the parts by weight of quick lime 49 and the parts by weight of sodium carbonate 42, make n
(Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 63min is incubated, mixed material is obtained, then by mixture
Material is cooled to room temperature, and the material after cooling then is worn into fine powder accounts for 90% to granularity in below 0.074mm, then uses concentration
Leached for 40g/L KOH alkali lye, you can to obtain the leachate containing aluminum oxide, so as to realize the recovery of aluminium element profit
With.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 90%.
Embodiment 5
Reference picture 1, by full weight of iron fraction is 3% and hot temperature is 1500 DEG C the hot melting slag of lateritic nickel ore, carbon
Sour calcium and sodium carbonate mix according to the ratio of the hot parts by weight of melting slag 70, the parts by weight of calcium carbonate 49 and the parts by weight of sodium carbonate 17.5
Close, make n (Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 90min is incubated, mixed material is obtained, then will
Mixed material is cooled to room temperature, and the material after cooling then is worn into fine powder accounts for 80% to granularity in below 0.074mm, then
The NaOH alkali lye for being 35g/L with concentration is leached, you can to obtain the leachate containing aluminum oxide, so as to realize aluminium element
Recycle.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 88.6%.
Embodiment 6
Reference picture 1, by full weight of iron fraction is 3% and hot temperature is 1500 DEG C the hot melting slag of copper ashes, dolomite
Mixed with sodium carbonate according to the ratio of the hot parts by weight of melting slag 70, the parts by weight of dolomite 40 and the parts by weight of sodium carbonate 35, make n
(Na2O)/n(Al2O3)=1 and n (CaO)/n (SiO2)=2, and 80min is incubated, mixed material is obtained, then by mixture
Material is cooled to room temperature, and the material after cooling then is worn into fine powder accounts for 88% to granularity in below 0.074mm, then uses concentration
Leached for 50g/L KOH alkali lye, you can to obtain the leachate containing aluminum oxide, so as to realize the recovery of aluminium element profit
With.
It is as shown in table 1 using the testing result of this method.As shown in Table 1, using above-mentioned technical proposal alumina recovery rate
For 89.2%.
The testing result that 1 different exemplary methods of table obtain
| Sequence number | Alumina recovery rate (%) |
| Embodiment 1 | 86.7 |
| Embodiment 2 | 85 |
| Embodiment 3 | 87 |
| Embodiment 4 | 90 |
| Embodiment 5 | 88.6 |
| Embodiment 6 | 89.2 |
As it can be seen from table 1 the final alumina recovery rate of the utility model is up to 85%-90%, so as to realize aluminium element
Comprehensive reutilization.
Preferred embodiment of the present utility model is the foregoing is only, is not used for limiting practical range of the present utility model；
If not departing from spirit and scope of the present utility model, the utility model is modified or equivalent substitution, all should covered
Among the protection domain of the utility model claims.
Claims (5)
1. a kind of system that aluminum oxide is extracted from hot metallurgical slag, it is characterised in that include：
Attemperator, the attemperator are provided with hot metallurgical slag entrance, calcium system additive and sodium carbonate entrance and mixing
Material outlet；
Blowing device, the blowing device are arranged on calcium system additive and sodium carbonate porch, and the blowing device
It is blown calcium system additive and sodium carbonate entrance described in mouth face, the blowing device is by calcium system additive and sodium carbonate to be blown
Mode is added in the attemperator；
Cooling device, the cooling device be provided with mixed material entrance and cooling material outlet, the mixed material entrance with
The mixed material outlet；
Fine mill, the fine mill are provided with cooling material inlet and levigate material outlet, the cooling material inlet with
The cooling material outlet；And
Leaching device, the leaching device are provided with levigate material inlet, leachate outlet and leached mud outlet, the levigate thing
Material entrance connects with the levigate material outlet.
2. system according to claim 1, it is characterised in that mixing rabbling mechanism is provided with the attemperator.
3. system according to claim 1, it is characterised in that the cooling device includes thing accommodating cavity to be cooled and cooling
Medium loop, cooling medium loop are arranged in thing accommodating cavity to be cooled.
4. system according to claim 1, it is characterised in that the cooling medium loop is in thing accommodating cavity to be cooled
Helical form is set.
5. system according to claim 1, it is characterised in that the cooling device includes thing accommodating cavity to be cooled and cooling
Medium loop, cooling medium loop are arranged in the cavity wall of thing accommodating cavity to be cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720608743.6U CN206986257U (en) | 2017-05-27 | 2017-05-27 | A kind of system that aluminum oxide is extracted from hot metallurgical slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720608743.6U CN206986257U (en) | 2017-05-27 | 2017-05-27 | A kind of system that aluminum oxide is extracted from hot metallurgical slag |
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| Publication Number | Publication Date |
|---|---|
| CN206986257U true CN206986257U (en) | 2018-02-09 |
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ID=61390944
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| CN201720608743.6U Expired - Fee Related CN206986257U (en) | 2017-05-27 | 2017-05-27 | A kind of system that aluminum oxide is extracted from hot metallurgical slag |
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| CN (1) | CN206986257U (en) |
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