CN109248903A - Melting waste slag removes the method and system of ammonia - Google Patents
Melting waste slag removes the method and system of ammonia Download PDFInfo
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- CN109248903A CN109248903A CN201811206858.8A CN201811206858A CN109248903A CN 109248903 A CN109248903 A CN 109248903A CN 201811206858 A CN201811206858 A CN 201811206858A CN 109248903 A CN109248903 A CN 109248903A
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- waste slag
- ammonia
- melting waste
- ammonium hydroxide
- melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses the method and systems that a kind of melting waste slag removes ammonia, this method comprises: melting waste slag is crushed by (1), to obtain melting waste slag particle；(2) by quick lime and the melting waste slag particle mixed grinding, to obtain mixed material；(3) mixed material is subjected to stewing process, to obtain the reaction mass containing ammonium hydroxide；(4) reaction mass by described containing ammonium hydroxide carries out drying and processing, to obtain ammonia and except waste residue after ammonia.This method is not required to any pre-reaction, is not required to that water additionally is added, and is not related to moisture evaporation, and convenient and simple for operation, low energy consumption, and the removal efficiency of ammonia is not less than 98%.
Description
Technical field
The invention belongs to Solid state fermentation fields, specifically, the present invention relates to the method and systems that melting waste slag removes ammonia.
Background technique
In recent years, metallurgical industry continues to develop, and generates a large amount of metallurgical slag, a large amount of waste residue every year in smelting process
Accumulation.If these waste residues are stored up for a long time, through solarization, wind, drench with rain, the soluble detrimental substance in slag can dissolve out, into soil
Earth flows into rivers, in turn results in serious environmental pollution, also results in the waste of land resource.Therefore, Nonferrous Metallurgical Waste Slag without
Evilization processing and comprehensive utilization are the research hotspots of metallurgical industry.
Wet method smelting process is commonly present height as leaching agent and precipitating reagent, thus in the waste residue that generates of technique frequently with ammoniacal liquor
The ammonium ion of concentration.It is less to the research of ammonium ion method of disposal and related patents in waste residue at present.Common waste water ammonia-removal from
Sub- exchange process, microbial method and break point chlorination are in Solid state fermentation and are not suitable for, and use blow-off method processing waste residue in ammonia from
Son needs to be added larger amount of water, and moisture causes energy consumption higher with stripping evaporation.
Therefore, the technology that existing melting waste slag removes ammonia is further improved.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is the method and system for proposing that a kind of melting waste slag removes ammonia.This method is not required to any pre-reaction, is not required to additionally add
Enter water, be not related to moisture evaporation, convenient and simple for operation, low energy consumption, and the removal efficiency of ammonia is not less than 98%.
In one aspect of the invention, the invention proposes a kind of method that melting waste slag removes ammonia, realities according to the present invention
Example is applied, this method comprises:
(1) melting waste slag is crushed, to obtain melting waste slag particle；
(2) by quick lime and the melting waste slag particle mixed grinding, to obtain mixed material；
(3) mixed material is subjected to stewing process, to obtain the reaction mass containing ammonium hydroxide；
(4) reaction mass by described containing ammonium hydroxide carries out drying and processing, to obtain ammonia and except waste residue after ammonia.
The method that melting waste slag according to an embodiment of the present invention removes ammonia, moisture in melting waste slag can slaking quicklime, obtain
To calcium hydroxide, and the ammonia nitrogen in melting waste slag exists in the form of ammonium ion, and after quick lime is ripened, ammonium ion can
Free ammonia is converted into obtained calcium hydroxide reaction, after drying, free ammonia is removed, and is obtained except waste residue after ammonia, ammonia takes off
Except rate is not less than 98%, to achieve the purpose that melting waste slag except ammonia.It is entire process efficient, simple and be easy to field application, no
Any pre-reaction is needed, is also not required to that water is additionally added, thus entire technique is not related to moisture evaporation, conveniently and low energy consumption.
In addition, melting waste slag according to the above embodiment of the present invention can also have additional technology as follows except the method for ammonia
Feature:
In some embodiments of the invention, in step (1), the moisture content of the melting waste slag is not less than 5%.By
This is, it can be achieved that curing to quick lime.
In some embodiments of the invention, in step (1), the partial size of the melting waste slag particle is not more than 1cm.By
This, is conducive to improve efficiency and effect that melting waste slag removes ammonia.
In some embodiments of the invention, in step (2), the partial size of the mixed material is not more than 0.4cm.By
This, can further improve efficiency and effect that melting waste slag removes ammonia.
In some embodiments of the invention, in step (2), the mixing of the melting waste slag particle and the quick lime
Mass ratio is 100:5-20.It can further improve efficiency and effect that melting waste slag removes ammonia as a result,.
In some embodiments of the invention, in step (3), the time of the stewing process is 5-30min.As a result,
It can further improve efficiency and effect that melting waste slag removes ammonia.
In some embodiments of the invention, in step (4), it is 40-200 degrees Celsius that the drying and processing, which is in temperature,
Lower progress 0.5-4 hours.It can further improve efficiency and effect that melting waste slag removes ammonia as a result,.
In another aspect of the invention, implement above-mentioned melting waste slag except the method for ammonia is the invention proposes a kind of
System, according to an embodiment of the invention, the system includes:
Crushing device, the crushing device have melting waste slag entrance and melting waste slag particle outlet；
Mixed grinding device, the mixed grinding device have quick lime entrance, melting waste slag particle entrance and mixture
Material outlet, the melting waste slag particle entrance are connected with the melting waste slag particle outlet；
Device is stood, the standing device has mixed material entrance and the reacting material outlet containing ammonium hydroxide, the mixing
Material inlet is connected with mixed material outlet；
Drying unit, the drying unit have reaction mass entrance containing ammonium hydroxide, ammonia outlet and except after ammonia waste residue go out
Mouthful, the reaction mass entrance containing ammonium hydroxide is connected with the reacting material outlet containing ammonium hydroxide.
The system that melting waste slag according to an embodiment of the present invention removes ammonia, moisture in melting waste slag can slaking quicklime, obtain
To calcium hydroxide, and the ammonia nitrogen in melting waste slag exists in the form of ammonium ion, and after quick lime is ripened, ammonium ion can
Free ammonia is converted into obtained calcium hydroxide reaction, after drying, free ammonia is removed, and is obtained except waste residue after ammonia, ammonia takes off
Except rate is not less than 98%, to achieve the purpose that melting waste slag except ammonia.It is entire process efficient, simple and be easy to field application, no
Any pre-reaction is needed, is also not required to that water is additionally added, thus entire technique is not related to moisture evaporation, conveniently and low energy consumption.
In addition, melting waste slag according to the above embodiment of the present invention can also have additional technology as follows except the system of ammonia
Feature:
In some embodiments of the invention, the drying unit is air blast dryer.Be conducive to improve as a result, to smelt and give up
Slag removes the efficiency and effect of ammonia.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the method flow schematic diagram that melting waste slag according to an embodiment of the invention removes ammonia；
Fig. 2 is the system structure diagram that melting waste slag according to an embodiment of the invention removes ammonia.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In one aspect of the invention, the invention proposes a kind of method that melting waste slag removes ammonia, realities according to the present invention
Example is applied, with reference to Fig. 1, this method comprises:
S100: melting waste slag is crushed
In the step, melting waste slag is crushed, to obtain melting waste slag particle.Specifically, containing in melting waste slag
There is certain moisture, while the ammonia nitrogen in melting waste slag exists in the form of ammonium ion.Melting waste slag after crushing, can be obtained
The smaller melting waste slag particle also more evenly of granularity.
According to one embodiment of present invention, the moisture content of melting waste slag is not less than 5%.Inventors have found that only working as smelting
When keeping being not less than 5% moisture in refining waste residue, the moisture-curing quick lime in melting waste slag can be just made full use of, reaches abundant
The purpose of slaking quicklime, meanwhile, water, the energy consumption saved the process can also be added to avoid additional under the moisture.
The partial size of still another embodiment in accordance with the present invention, melting waste slag particle can be not more than 1cm.Inventors have found that
The partial size of melting waste slag particle is maintained at no more than 1cm in crushing stage, is on the one hand conducive to the energy consumption for saving crushing stage,
On the one hand it advantageously ensures that melting waste slag particle is subsequent under the partial size and is sufficiently mixed grinding with quick lime, and save subsequent mix
Close the energy consumption of grinding.
S200: by quick lime and melting waste slag particle mixed grinding
In the step, by quick lime and melting waste slag particle mixed grinding, to obtain mixed material.Inventors have found that
By that until the two is uniformly mixed, quick lime can be significantly increased quick lime and melting waste slag particle mixed grinding and smelted useless
The contact area of solid impurity particle, and then increase the progress of the water cure quick lime in subsequent smelting waste particle.
According to one embodiment of present invention, the partial size of mixed material can be for no more than 0.4cm.Inventors have found that should
The curing efficiency for being conducive to improve quick lime in subsequent process under partial size, improves the reaction efficiency of subsequent ammonium root and calcium hydroxide,
The efficiency that the subsequent reaction mass drying containing ammonium hydroxide removes ammonia can be improved simultaneously.
The mixing mass ratio of still another embodiment in accordance with the present invention, melting waste slag particle and quick lime can be 100:5-
20.Inventors have found that being remarkably improved the curing efficiency of subsequent quick lime under the mixing mass ratio.If melting waste slag particle
Quality it is excessively high, then the quality relative deficiency of quick lime, in this way, the moisture after one side subsequent reactions are complete in melting waste slag particle
Will be superfluous, can improve the energy consumption of subsequent drying and processing, on the one hand the subsequent resulting calcium hydroxide of curing is insufficient, so will be unable to by
Ammonium root in melting waste slag particle is removed in the form of free ammonia, and reduce melting waste slag particle removes ammonia effect.And if smelting useless
The quality of solid impurity particle is too low, then the quality relative surplus of quick lime, and subsequent quick lime curing not exclusively, thus will be reduced to smelt and be given up
Slag removes ammonia efficiency.
S300: mixed material is subjected to stewing process
In the step, mixed material is subjected to stewing process, to obtain the reaction mass containing ammonium hydroxide.Specifically, quiet
During setting, the quick lime in mixed material is contacted with the water in melting waste slag particle, and the calcium oxide in quick lime and water are sent out
Raw reaction, obtains calcium hydroxide, realizes curing.Resulting calcium hydroxide is reacted with the ammonium ion in mixed material again, is obtained
Calcium ion and ammonium hydroxide are to get arriving the reaction mass containing ammonium hydroxide.Entire reaction process naturally-occurring is not necessarily to other subsidiary conditions, letter
It is single, efficient.
According to one embodiment of present invention, the time of stewing process can be 5-30min.Inventors have found that at this moment
It is interior to be remarkably improved the curing degree of quick lime and the production rate of ammonium hydroxide, to be conducive to improve subsequent except ammonia efficiency.If standing
Time it is too short, then quick lime curing is insufficient in mixed material, is unfavorable for the subsequent progress except ammonia reaction.And if the time stood
Too long, then the time of entire technique extends, and time cost increases.
S400: the reaction mass containing ammonium hydroxide is subjected to drying and processing
In the step, the reaction mass containing ammonium hydroxide is subjected to drying and processing, to obtain ammonia and except waste residue after ammonia.Specifically
, after drying, ammonium hydroxide therein can be removed the reaction mass containing ammonium hydroxide in the form of ammonia, so can further promote ammonium root
The direct motion of ion and calcium hydroxide reaction, and then further increase except ammonia efficiency.
According to one embodiment of present invention, drying and processing can be temperature be 40-200 degrees Celsius under carry out 0.5-4
Hour.Inventors have found that carrying out drying and processing under above-mentioned drying condition, be remarkably improved the reaction mass containing ammonium hydroxide removes ammonia
Efficiency.If the temperature of drying and processing is too low, the time required when removing of the ammonia in the reaction mass that will contain ammonium hydroxide will increase,
It could even be possible to the effect except ammonia is not achieved, or except ammonia is incomplete.If the temperature of drying and processing is excessively high, the energy of drying and processing
Consume it is excessively high, be unfavorable for improve enterprise economy.
The method that melting waste slag according to an embodiment of the present invention removes ammonia, moisture in melting waste slag can slaking quicklime, obtain
To calcium hydroxide, and the ammonia nitrogen in melting waste slag exists in the form of ammonium ion, and after quick lime is ripened, ammonium ion can
Free ammonia is converted into obtained calcium hydroxide reaction, after drying, free ammonia is removed, and is obtained except waste residue after ammonia, ammonia takes off
Except rate is not less than 98%, to achieve the purpose that melting waste slag except ammonia.It is entire process efficient, simple and be easy to field application, no
Any pre-reaction is needed, is also not required to that water is additionally added, thus entire technique is not related to moisture evaporation, conveniently and low energy consumption.
In another aspect of the invention, implement above-mentioned melting waste slag except the method for ammonia is the invention proposes a kind of
System, according to an embodiment of the invention, the system includes: crushing device 100, mixed grinding device 200, stands device with reference to Fig. 2
300 and drying unit 400.
According to an embodiment of the invention, crushing device 100 has melting waste slag entrance 101 and melting waste slag particle outlet
102, and be suitable for for melting waste slag being crushed, to obtain melting waste slag particle.Specifically, containing centainly in melting waste slag
Moisture, while the ammonia nitrogen in melting waste slag exists in the form of ammonium ion.After crushing, it is smaller that granularity can be obtained in melting waste slag
Also melting waste slag particle more evenly.It should be noted that crushing device is not particularly restricted, those skilled in the art can be with
It is selected according to actual needs, such as can be wet-material disintegrator.Contain inventors have found that the wet-material disintegrator is suitable for crushing
The slag charge of certain water, will not block, and uniform particle sizes after crushing.
According to one embodiment of present invention, the moisture content of melting waste slag is not less than 5%.Inventors have found that only working as smelting
When keeping being not less than 5% moisture in refining waste residue, the moisture-curing quick lime in melting waste slag can be just made full use of, reaches abundant
The purpose of slaking quicklime, meanwhile, water, the energy consumption saved the process can also be added to avoid additional under the moisture.
The partial size of still another embodiment in accordance with the present invention, melting waste slag particle can be not more than 1cm.Inventors have found that
The partial size of melting waste slag particle is maintained at no more than 1cm in crushing stage, is on the one hand conducive to the energy consumption for saving crushing stage,
On the one hand it advantageously ensures that melting waste slag particle is subsequent under the partial size and is sufficiently mixed grinding with quick lime, and save subsequent mix
Close the energy consumption of grinding.
According to an embodiment of the invention, mixed grinding device 200 has quick lime entrance 201, melting waste slag particle entrance
202 and mixed material outlet 203, melting waste slag particle entrance 202 is connected with melting waste slag particle outlet 102, and suitable for will give birth to
Lime and melting waste slag particle mixed grinding, to obtain mixed material.Inventors have found that by by quick lime and melting waste slag
Particle mixed grinding can significantly increase the contact area of quick lime Yu melting waste slag particle, Jin Erzeng until the two is uniformly mixed
Add the progress of the water cure quick lime in subsequent smelting waste particle.It should be noted that mixed grinding can be in a device
Interior progress can also carry out in two devices, can select according to actual needs this those skilled in the art, such as
When mixed grinding device is a device, mixed grinding device can be dry ball.Inventors have found that being adopted in the application
Material can be uniformly mixed with this mixed grinding device, and not introduce large quantity of moisture, avoid the consumption of subsequent energy consumption.
According to one embodiment of present invention, the partial size of mixed material can be not more than 0.4cm.Inventors have found that the grain
The curing efficiency for being conducive to improve quick lime in subsequent process under diameter, improves the reaction efficiency of subsequent ammonium root and calcium hydroxide, together
When can be improved it is subsequent containing ammonium hydroxide reaction mass drying remove ammonia efficiency.
The mixing mass ratio of still another embodiment in accordance with the present invention, melting waste slag particle and quick lime can be 100:5-
20.Inventors have found that being remarkably improved the curing efficiency of subsequent quick lime under the mixing mass ratio.If melting waste slag particle
Quality it is excessively high, then the quality relative deficiency of quick lime, in this way, the moisture after one side subsequent reactions are complete in melting waste slag particle
Will be superfluous, can improve the energy consumption of subsequent drying and processing, on the one hand the subsequent resulting calcium hydroxide of curing is insufficient, so will be unable to by
Ammonium root in melting waste slag particle is removed in the form of free ammonia, and reduce melting waste slag particle removes ammonia effect.And if smelting useless
The quality of solid impurity particle is too low, then the quality relative surplus of quick lime, and subsequent quick lime curing not exclusively, thus will be reduced to smelt and be given up
Slag removes ammonia efficiency.
According to an embodiment of the invention, standing device 300 there is mixed material entrance 301 and the reaction mass containing ammonium hydroxide to go out
Mouth 302, mixed material entrance 301 are connected with mixed material outlet 203, and are suitable for mixed material carrying out stewing process, so as to
Obtain the reaction mass containing ammonium hydroxide.Specifically, during standing, in the quick lime and melting waste slag particle in mixed material
Water contact, the calcium oxide in quick lime reacts with water, obtains calcium hydroxide, realize and cure.Resulting calcium hydroxide is again
It is reacted with the ammonium ion in mixed material, obtains calcium ion and ammonium hydroxide to get the reaction mass containing ammonium hydroxide is arrived.Entirely reacted
Journey naturally-occurring is not necessarily to other subsidiary conditions, simple, efficient.
According to one embodiment of present invention, the time of stewing process can be 5-30min.Inventors have found that at this moment
It is interior to be remarkably improved the curing degree of quick lime and the production rate of ammonium hydroxide, to be conducive to improve subsequent except ammonia efficiency.If standing
Time it is too short, then quick lime curing is insufficient in mixed material, is unfavorable for the subsequent progress except ammonia reaction.And if the time stood
Too long, then the time of entire technique extends, and time cost increases.
According to an embodiment of the invention, drying unit 400 is with the reaction mass entrance 401 containing ammonium hydroxide, ammonia outlet 402
With except waste residue outlet 403 after ammonia, the reaction mass entrance 401 containing ammonium hydroxide is connected with the reacting material outlet 302 containing ammonium hydroxide, and fits
Drying and processing is carried out in the reaction mass that will contain ammonium hydroxide, to obtain ammonia and except waste residue after ammonia.Specifically, the reaction containing ammonium hydroxide
After drying, ammonium hydroxide therein can be removed material in the form of ammonia, so can further promote ammonium ion and calcium hydroxide
The direct motion of reaction, and then further increase except ammonia efficiency.
According to one embodiment of present invention, drying and processing can be temperature be 40-200 degrees Celsius under carry out 0.5-4
Hour.Inventors have found that carrying out drying and processing under above-mentioned drying condition, be remarkably improved the reaction mass containing ammonium hydroxide removes ammonia
Efficiency.If the temperature of drying and processing is too low, the time required when removing of the ammonia in the reaction mass that will contain ammonium hydroxide will increase,
It could even be possible to the effect except ammonia is not achieved, or except ammonia is incomplete.If the temperature of drying and processing is excessively high, the energy of drying and processing
Consume it is excessively high, be unfavorable for improve enterprise economy.
Still another embodiment in accordance with the present invention, drying unit can be air blast dryer.May be implemented in as a result, it is lower at
This lower reaction mass of the realization containing ammonium hydroxide removes ammonia.
The system that melting waste slag according to an embodiment of the present invention removes ammonia, moisture in melting waste slag can slaking quicklime, obtain
To calcium hydroxide, and the ammonia nitrogen in melting waste slag exists in the form of ammonium ion, and after quick lime is ripened, ammonium ion can
Free ammonia is converted into obtained calcium hydroxide reaction, after drying, free ammonia is removed, and is obtained except waste residue after ammonia, ammonia takes off
Except rate is not less than 98%, to achieve the purpose that melting waste slag except ammonia.It is entire process efficient, simple and be easy to field application, no
Any pre-reaction is needed, is also not required to that water is additionally added, thus entire technique is not related to moisture evaporation, conveniently and low energy consumption.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
It (1) is 14.5%, NH by moisture content4 +Content is that the melting waste slag of 5.10kg/t is crushed, and it is little to obtain partial size
In the melting waste slag particle of 1cm；
(2) by resulting melting waste slag particle and quick lime according to the quality of 100:10 than mixed grinding, obtain partial size not
Mixed material greater than 0.3cm；
(3) said mixture material is stood 20 minutes, obtains the reaction mass containing ammonium hydroxide；
(4) the above-mentioned reaction mass containing ammonium hydroxide is dried 4 hours in 100 degrees Celsius of lower air blast, obtaining ammonia content is
Waste residue and the ammonia after removing ammonia of 0.048kg/t, through above-mentioned technique, the removal efficiency of melting waste slag ammonia is 99.06%.
Embodiment 2
It (1) is 10.5%, NH by moisture content4 +Content is that the melting waste slag of 8.50kg/t is crushed, and it is little to obtain partial size
In the melting waste slag particle of 1cm；
(2) by resulting melting waste slag particle and quick lime according to the quality of 100:20 than mixed grinding, obtain partial size not
Mixed material greater than 0.2cm；
(3) said mixture material is stood 10 minutes, obtains the reaction mass containing ammonium hydroxide；
(4) the above-mentioned reaction mass containing ammonium hydroxide is dried 2 hours in 150 degrees Celsius of lower air blast, obtaining ammonia content is
Waste residue and the ammonia after removing ammonia of 0.104kg/t, through above-mentioned technique, the removal efficiency of melting waste slag ammonia is 98.78%.
Embodiment 3
It (1) is 7.0%, NH by moisture content4 +Content is that the melting waste slag of 10.0kg/t is crushed, and obtains partial size and is not more than
The melting waste slag particle of 1cm；
(2) by resulting melting waste slag particle and quick lime according to the quality of 100:5 than mixed grinding, it is little to obtain partial size
In the mixed material of 0.4cm；
(3) said mixture material is stood 15 minutes, obtains the reaction mass containing ammonium hydroxide；
(4) by the above-mentioned reaction mass containing ammonium hydroxide, air blast is dried 1 hour at 200 degrees celsius, and obtaining ammonia content is
Waste residue and the ammonia after removing ammonia of 0.05kg/t, through above-mentioned technique, the removal efficiency of melting waste slag ammonia is 99.5%.
Embodiment 4
It (1) is 12.0%, NH by moisture content4 +Content is that the melting waste slag of 6.7kg/t is crushed, and obtains partial size and is not more than
The melting waste slag particle of 1cm；
(2) by resulting melting waste slag particle and quick lime according to the quality of 100:15 than mixed grinding, obtain partial size not
Mixed material greater than 0.1cm；
(3) said mixture material is stood 25 minutes, obtains the reaction mass containing ammonium hydroxide；
(4) the above-mentioned reaction mass containing ammonium hydroxide is dried 5 hours in 75 degrees Celsius of lower air blast, obtaining ammonia content is
Waste residue and the ammonia after removing ammonia of 0.04kg/t, through above-mentioned technique, the removal efficiency of melting waste slag ammonia is 99.40%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of method that melting waste slag removes ammonia characterized by comprising
(1) melting waste slag is crushed, to obtain melting waste slag particle；
(2) by quick lime and the melting waste slag particle mixed grinding, to obtain mixed material；
(3) mixed material is subjected to stewing process, to obtain the reaction mass containing ammonium hydroxide；
(4) reaction mass by described containing ammonium hydroxide carries out drying and processing, to obtain ammonia and except waste residue after ammonia.
2. the method according to claim 1, wherein the moisture content of the melting waste slag is not low in step (1)
In 5%.
3. method according to claim 1 or 2, which is characterized in that in step (1), the grain of the melting waste slag particle
Diameter is not more than 1cm.
4. the method according to claim 1, wherein the partial size of the mixed material is not more than in step (2)
0.4cm。
5. method according to claim 1 or 4, which is characterized in that in step (2), the melting waste slag particle and institute
The mixing mass ratio for stating quick lime is 100:5-20.
6. method according to claim 1 or 5, which is characterized in that in step (3), the time of the stewing process is
5-30min。
7. method according to claim 1 or 6, which is characterized in that in step (4), the drying and processing is in temperature
It is to be carried out 0.5-4 hours under 40-200 degrees Celsius.
8. a kind of system implemented the melting waste slag of any of claims 1-7 and remove the method for ammonia, which is characterized in that packet
It includes:
Crushing device, the crushing device have melting waste slag entrance and melting waste slag particle outlet；
There is quick lime entrance, melting waste slag particle entrance and mixed material to go out for mixed grinding device, the mixed grinding device
Mouthful, the melting waste slag particle entrance is connected with the melting waste slag particle outlet；
Device is stood, the standing device has mixed material entrance and the reacting material outlet containing ammonium hydroxide, the mixed material
Entrance is connected with mixed material outlet；
Drying unit, the drying unit have reaction mass entrance containing ammonium hydroxide, ammonia outlet and except waste residue outlet, institutes after ammonia
The reaction mass entrance containing ammonium hydroxide is stated to be connected with the reacting material outlet containing ammonium hydroxide.
9. system according to claim 8, which is characterized in that the drying unit is air blast dryer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615508A (en) * | 2019-09-24 | 2019-12-27 | 中国恩菲工程技术有限公司 | Electrolytic ammonia removal method for metallurgical waste residues |
| CN110624933A (en) * | 2019-09-24 | 2019-12-31 | 中国恩菲工程技术有限公司 | Method for washing and removing ammonia from metallurgical waste residues |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022684A (en) * | 2017-03-24 | 2017-08-08 | 江苏省冶金设计院有限公司 | The system and method for handling metallurgical slag |
-
2018
- 2018-10-17 CN CN201811206858.8A patent/CN109248903A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022684A (en) * | 2017-03-24 | 2017-08-08 | 江苏省冶金设计院有限公司 | The system and method for handling metallurgical slag |
Non-Patent Citations (1)
| Title |
|---|
| 罗乐;降林华;周皓;段宁;: "基于生石灰强化处理的锰渣无害化技术" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615508A (en) * | 2019-09-24 | 2019-12-27 | 中国恩菲工程技术有限公司 | Electrolytic ammonia removal method for metallurgical waste residues |
| CN110624933A (en) * | 2019-09-24 | 2019-12-31 | 中国恩菲工程技术有限公司 | Method for washing and removing ammonia from metallurgical waste residues |
| CN110624933B (en) * | 2019-09-24 | 2021-05-07 | 中国恩菲工程技术有限公司 | Method for washing and removing ammonia from metallurgical waste residues |
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