CN106365454A - Method of adopting microwave method and sitallization to coprocess zinc smelting sludge - Google Patents
Method of adopting microwave method and sitallization to coprocess zinc smelting sludge Download PDFInfo
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- CN106365454A CN106365454A CN201610737981.7A CN201610737981A CN106365454A CN 106365454 A CN106365454 A CN 106365454A CN 201610737981 A CN201610737981 A CN 201610737981A CN 106365454 A CN106365454 A CN 106365454A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/02—Pretreated ingredients
- C03C1/026—Pelletisation or prereacting of powdered raw materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a method of adopting microwave method and sitallization to coprocess zinc smelting sludge, and belongs to the technical field of comprehensive utilization of resources and environmental protection. The method of adopting microwave method and sitallization to coprocess zinc smelting sludge comprises the steps of 1, pretreatment; 2, material dosing and blending; 3, recycling of valuable metal; 4, vitrification, 5, sitallization. The step 1 comprises the steps of adopting micro waves to carry out drying on zinc smelting sludge and auxiliary materials respectively, carrying out ball milling and sieving on the dried zinc smelting sludge and the dried auxiliary materials. The step 2 comprises the step of carrying out material dosing and blending on screen underflow. The step 3 comprises the steps of putting the sludge into a microwave reactor, heating the sludge using microwaves and collecting smoke dust produced during the heating process. The step 4 comprises the step of continuing heating on sludge residues in thermal state to realize vitrification of the sludge. The step 5 comprises the step of carrying out sitallization treatment on the residues in thermal state obtained in the step 4. The method of adopting microwave method and sitallization to coprocess zinc smelting sludge puts forward a technology of coprocessing of the microwave method and sitallization, and realizes harmless and resourceful treatment of the zinc smelting sludge with a high efficiency and a low consumption.
Description
Technical field
The present invention relates to a kind of microwave method and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, belong to comprehensive utilization of resources
And environmental protection technical field.
Background technology
National " " 12 " Hazardous Wastes Management control program " clearly proposes " to strengthen heavy metal hazardous waste innoxious
Using and dispose, attached most importance to Hunan, Yunnan, Guangdong, Guangxi, strengthen containing cadmium, containing the innoxious use of hazardous waste such as arsenic and
Dispose, promote non-ferrous metal metallurgy hazardous waste using disposal construction of base ", Heavy Metal Pollution is still 13 planning
The most important thing.It is in zinc metallurgical process and the zinc abstraction mud of acid waste water generation that smelting zinc smelts mud, and yield is big, contains
There are the heavy metals such as pb, zn, cd, hg, as, belong to hazardous waste (hw48), there is to environment very big harm.At present to smelting zinc smelting
Refining mud, mainly using the disposal options such as storing up, filling, solidify, is stored up and be there is the peace such as subsoil water and soil pollution with landfill stabilization
Full hidden danger.Solidification technology is so that zinc abstraction mud and firming agent is reacted, and the heavy metal in zinc abstraction mud is fixed
In firming agent, thus realizing innoxious, Common Curing Agents are cement and chemical agent (as ferrous salt, chelating agen etc.).Cement
It is also effective processing mode that kiln cooperative disposal, mineral polymer carry out cured etc..However, cured is primarily present slag
The shortcomings of amount increase-volume and valuable metal cannot reclaim.
At present, the recovery of valuable metal mainly has wet processing and thermal process.Smelted using hydrometallurgic recovery low grade zinc
Mud, high energy consumption, and the residue producing easily causes secondary pollution.Thermal process is the main of recovery zinc abstraction mud valuable metal
Technique, commonly used equipment is rotary kiln or fuming furnace, but the heat of process cannot get effectively utilizes, if Water Quenching Slag is not added with
Deal carefully with the risk still suffering from heavy metal release.Microwave heating have homogeneous heating, thermal efficiency height, quick heating, targeted strong,
The features such as thermal inertia is little, has begun to be applied to the various fields such as fixed-end forces, metallurgy.
Devitrified glass is widely used in the aspects such as machinery, electronics, space flight, chemical anticorrosion, mine, road, building, medical science,
Wherein building and ornament materials are one of its important application aspects.Prepare decorative devitrified glass material using solid waste, can not only obtain
Performance is better than the ornament materials of granite and natural marble, but also provides a kind of new way for the resource of solid waste.Through
Years of researches, the existing correlation with slag, mine tailing, lime-ash, red mud etc. for main material production crystallizing glass decoration board at present
Report.
Devitrified glass traditional preparation methods are founded directly as thermal source using electricity or fuel, the method heating rate
Relatively slow, heat utilization efficiency is low, and energy consumption is of a relatively high, and heating process surface and inside thermograde easily and leads to sample structure
Uneven, product is likely to occur fault of construction.The internal organizational structure of devitrified glass can effectively be optimized using microwave heat,
Thus preparing the devitrified glass coating with particular characteristic, compared with traditional method sample, there is higher mechanical strength.
The present invention is based on and adopts microwave heating, works in coordination with handling process technology in conjunction with microwave-controlled micro crystallization, realizes zinc abstraction
Mud is efficient, low consumption is innoxious, resource.
Content of the invention
The present invention has that high energy consumption, efficiency is low and environmental risk is big etc. for existing zinc abstraction sludge resource technology and asks
Topic it is proposed that microwave-controlled micro crystallization works in coordination with treatment technology, realize zinc abstraction mud efficiently, innoxious, the recycling treatment of low consumption.
For solving above technical problem, the present invention is achieved through the following technical solutions:
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment: respectively zinc abstraction mud and adjuvant are dried using microwave, to dried mud and adjuvant
Carry out ball milling to sieve；
(2) dispensing, batch mixing: extracting screen underflow carries out dispensing and batch mixing；
(3) valuable metal recovery: mud is placed in microwave reactor and using microwave, mud is heated, and to heating
Process produces flue dust and is collected；
(4) vitrification: to there being hot sludge residue to continue heating, realize the vitrification of mud；
(5) controlled micro crystallization: the hot residue that step (4) is obtained carries out controlled micro crystallization process.
Further, in step (1) pretreatment, described zinc abstraction mud is in zinc metallurgical process and acid waste water produces
Smelt mud containing heavy metal zincs such as pb, zn, cd, hg, as；Described adjuvant includes sio2、al2o3、na2co3, inhale ripple material,
Nucleating Agent, make toner.
Further, described sio2Can be the sio such as quartz sand, silica flour2Content is more than 80% raw material.
Further, described suction ripple material can be fe3o4, graphite powder, silicon carbide powder one or several.
Further, in described step (1) pretreatment, drying sludge microwave output power scope is 800w-1500w, does
The dry time is 10-30min；The microwave output power scope that is dried of adjuvant is 400w-850w, and drying time is 5-15min.
Further, in step (2) dispensing, batch mixing, the mixed proportion of each raw material is mud 45-70wt%, sio215-
35wt%, al2o33-7wt%, na2co33-6wt%, inhale ripple material 5-20wt%, Nucleating Agent, make toner ＜ 5wt%.
Further, in step (3) valuable metal recovery, microwave output power is 3-15kw, and reactor temperature is
850-1000 DEG C, the flue dust of generation adopts the high temperature resistant cyclone dust extractor of steel or surface cooler+resistant to elevated temperatures sack cleaner group
Conjunction carries out flue dust collecting.
Further, in step (4) vitrification, heating-up temperature is more than 1200 DEG C -1400 DEG C insulation 30-60min and carries out glass
Prepared by glassization.
Further, in step (5) controlled micro crystallization, first be cooled to rapidly 850-1000 DEG C adopts microwave to hot residue controlled micro crystallization
The mode of heating carries out being incubated 30-60min, then is cooled to rapidly 500-600 DEG C of insulation 50min-80min, after furnace cooling i.e.
Obtain devitrified glass product.
Further, the side that the mode of heating of step (3)～(5) is all combined using direct microwave heating and assisted microwave synthesis heating
Formula.
Beneficial effects of the present invention:
(1) energy consumption can be effectively reduced using microwave drying process, reduce drying time, lift drying efficiency；
(2) the suction ripple material with reference to raw material itself promote microwave directly heat and carborundum or graphiote reactor carry out assisting micro-
Two kinds of mode of heatings of Wave heating ensure the efficiency of heating surface, can asking with its raw material absorbing property difference of effectively solving microwave heating process
Topic；
(3) During Vitrification in vitro, according to the absorbing property reasonable selection mode of heating of raw material, can improve thermal effectiveness, with
When energy efficient, the material of absorbing property difference selects traditional heating (heating by electric cooker), and the good material of absorbing property selects microwave
Heating；
(4) vitrification is carried out to hazardous waste and controlled micro crystallization can obtain devitrified glass product, can fully resource endanger
Valuable component in useless；The heavy metal in mud effectively can be fixed in the lattice of devitrified glass for devitrified glass simultaneously,
Avoid secondary pollution problem it is achieved that innoxious and resource；
(5) parent glass and 850-1000 DEG C of temperature section have good absorbing property, can be promoted using microwave heating
Nucleation and crystallize, nucleation stage that need not be traditional and crystallization are incubated respectively, can substantially reduce energy consumption, and availability is relative simultaneously
Good devitrified glass.
To sum up, the method preparation process is simple, resource degree are high, with low cost, have significant social benefit and warp
Ji is worth.
Brief description
Fig. 1 is the process chart of the present invention.
Specific embodiment
Below in conjunction with embodiments of the invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments, is based on
Embodiment in the present invention, it is all other that this area comparison technical staff is obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment and dispensing batch mixing: take zinc abstraction mud (its composition analysis result is listed in table 1) and the adjuvant of factory 1, do
Dry microwave output power is 1200w, and drying time is 15min；The microwave output power scope that is dried of adjuvant is 500w, when being dried
Between be 8min.Carry out ball milling to dried mud and adjuvant to sieve, cross grit number 180 mesh, extracting screen underflow is entered using table 2 proportioning
Row dispensing, batch mixing.
Table 1 zinc abstraction sludge components analytical table
Table 2 proportioning 1#
(2) valuable metal recovery: raw material using microwave heating and is stirred, microwave output power is 5kw, reactor interior temperature
Spend for 940 DEG C, the flue dust of generation carries out flue dust collecting using surface cooler+resistant to elevated temperatures sack cleaner combination；
(3) vitrification: be glassed to adopt microwave heating, be warming up to 1250 DEG C of insulation 45min and carry out vitrification preparation；
(4) controlled micro crystallization: hot residue controlled micro crystallization is first cooled to rapidly 900 DEG C and is incubated by the way of microwave heating
60min, then it is cooled to rapidly 600 DEG C of insulation 70min, obtain devitrified glass product after furnace cooling.
The valuable metal flue dust weight that the present embodiment is collected is 500g, and component content is to be shown in Table 3；Devitrified glass end properties
Index is as shown in table 4.
The valuable metal product parameters that table 3 recovery stage is obtained by dust arrester installation
Table 4 devitrified glass performance indications
As can be seen from Table 3 it is known that the valuable metal content in flue dust is high, organic efficiency ＞ 80%；As can be seen from Table 4, originally
The devitrified glass properties of product of inventive embodiments 1 preparation reach " Expectation of Glass-Ceramics Used as Decorated Materials " (jct872-2000) industry mark
Accurate.
Embodiment 2
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment and dispensing batch mixing: take zinc abstraction mud (its composition analysis result is listed in table 5) and the adjuvant of factory 2, do
Dry microwave output power scope is 1500w, and drying time is 10min；The microwave output power scope that is dried of adjuvant is 850w, does
The dry time is 5min.Carry out ball milling to dried mud and adjuvant to sieve, cross grit number 200 mesh, extracting screen underflow is joined using table 6
Ratio carries out dispensing, batch mixing.
Table 5 zinc abstraction sludge components analytical table
Table 6 proportioning 2#
(2) valuable metal recovery: raw material using microwave heating and is stirred, microwave output power is 15kw, in reactor
Temperature is 1000 DEG C, and the flue dust of generation adopts steel cyclone dust extractor；
(3) vitrification: be glassed to adopt heating by electric cooker, be warming up to 1200 DEG C of insulation 60min and carry out vitrification preparation；
(4) controlled micro crystallization: hot residue controlled micro crystallization is first cooled to rapidly 900 DEG C and is incubated by the way of microwave heating
40min, then it is cooled to rapidly 500 DEG C of insulation 80min, obtain devitrified glass product after furnace cooling, performance is shown in Table 7.
Table 7 devitrified glass performance indications
As can be seen from Table 7, the devitrified glass properties of product of the embodiment of the present invention 2 preparation reach " architectural decoration crystallite glass
Glass " (jct 872-2000) industry standard.
Embodiment 3
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment and dispensing batch mixing: take zinc abstraction mud (its composition analysis result is listed in table 8) and the adjuvant of factory 3, do
Dry microwave output power scope is 800w-1500w, and drying time is 10-30min；Adjuvant microwave output power scope is dried
For 400w-850w, drying time is 5-15min.Carry out ball milling to dried mud and adjuvant to sieve, cross grit number 160-
200 mesh, extracting screen underflow carries out dispensing, batch mixing using table 9 proportioning.
Table 8 zinc abstraction sludge components analytical table
Table 9 proportioning 3#
(2) valuable metal recovery: raw material using microwave heating and is stirred, microwave output power is 12kw, in reactor
Temperature is 920 DEG C, and the flue dust of generation carries out flue dust collecting using the combination of resistant to elevated temperatures sack cleaner；
(3) vitrification: be glassed to adopt microwave heating, be warming up to 1300 DEG C of insulation 45min and carry out vitrification preparation；
(4) controlled micro crystallization: hot residue controlled micro crystallization is first cooled to rapidly 1000 DEG C and is incubated by the way of microwave heating
30min, then it is cooled to rapidly 550 DEG C of insulation 70min, obtain devitrified glass product after furnace cooling, performance is shown in Table 10.
Table 10 devitrified glass performance indications
As can be seen from Table 10, the devitrified glass properties of product of the embodiment of the present invention 2 preparation reach " architectural decoration crystallite glass
Glass " (jct 872-2000) industry standard.
Embodiment 4
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment and dispensing batch mixing: take zinc abstraction mud (its composition analysis result is listed in table 11) and the adjuvant of factory 4,
It is 1200w that microwave output power scope is dried, and drying time is 20min；The microwave output power scope that is dried of adjuvant is 500w,
Drying time is 12min.Carry out ball milling to dried mud and adjuvant to sieve, cross grit number 160 mesh, extracting screen underflow adopts table
12 proportionings carry out dispensing, batch mixing.
Table 11 zinc abstraction sludge components analytical table
Table 12 proportioning 4#
(2) valuable metal recovery: raw material using microwave heating and is stirred, microwave output power is 8kw, reactor interior temperature
Spend for 860 DEG C, the flue dust of generation carries out flue dust collecting using steel cyclone dust extractor；
(3) vitrification: be glassed to adopt microwave heating, be warming up to 1400 DEG C of insulation 35min and carry out vitrification preparation；
(4) controlled micro crystallization: hot residue controlled micro crystallization is first cooled to rapidly 850 DEG C and is incubated by the way of microwave heating
55min, then it is cooled to rapidly 580 DEG C of insulation 70min, obtain devitrified glass product after furnace cooling.
Embodiment 5
Described microwave method and controlled micro crystallization are worked in coordination with and are processed the method for zinc abstraction mud and specifically include following steps:
(1) pretreatment and dispensing batch mixing: take zinc abstraction mud (its composition analysis result is listed in table 13) and the adjuvant of factory 5,
It is 1100w that microwave output power scope is dried, and drying time is 26min；The microwave output power scope that is dried of adjuvant is 700w,
Drying time is 6min.Carry out ball milling to dried mud and adjuvant to sieve, cross grit number 200 mesh, extracting screen underflow adopts table
14 proportionings carry out dispensing, batch mixing.
Table 13 zinc abstraction sludge components analytical table
Table 14 proportioning 5#
(2) valuable metal recovery: raw material using microwave heating and is stirred, microwave output power is 8kw, reactor interior temperature
Spend for 880 DEG C, the flue dust of generation carries out flue dust collecting using resistant to elevated temperatures cyclone dust extractor after surface cooler cooling；
(3) vitrification: be glassed to adopt microwave heating, be warming up to 1300 DEG C of insulation 30min and carry out vitrification preparation；
(4) controlled micro crystallization: hot residue controlled micro crystallization is first cooled to rapidly 1000 DEG C and is incubated by the way of microwave heating
30min, then it is cooled to rapidly 600 DEG C of insulation 70min, obtain devitrified glass product after furnace cooling.
The present invention can effectively reduce energy consumption using microwave drying process, reduces drying time, lifts drying efficiency；Knot
Close raw material itself suction ripple material promote microwave directly heat and carborundum or graphiote reactor carry out assisted microwave synthesis heat two kinds plus
Hot mode ensures the efficiency of heating surface, can be with the problem of its raw material absorbing property difference of effectively solving microwave heating process；During Vitrification in vitro,
According to the absorbing property reasonable selection mode of heating of raw material, thermal effectiveness can be improved, simultaneously energy efficient, absorbing property difference
Material selects traditional heating (heating by electric cooker), and the good material of absorbing property selects microwave heating；Glass is carried out to hazardous waste
Change and controlled micro crystallization can obtain devitrified glass product, can fully resource danger give up in valuable component；Devitrified glass can simultaneously
So that the heavy metal in mud to be effectively fixed in the lattice of devitrified glass, it is to avoid secondary pollution problem is it is achieved that innoxious
And resource；Parent glass and 850-1000 DEG C of temperature section have good absorbing property, can be promoted into using microwave heating
Core and crystallize, nucleation stage that need not be traditional and crystallization are incubated respectively, can substantially reduce energy consumption, availability is relatively good simultaneously
Good devitrified glass；The method preparation process is simple, resource degree are high, with low cost, have significant social benefit and warp
Ji is worth.
Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical
Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be
In form and various changes are made to it, without departing from claims of the present invention limited range in details.
Claims (10)
1. a kind of microwave method and controlled micro crystallization work in coordination with the method processing zinc abstraction mud it is characterised in that: described microwave method and micro-
Crystallization is worked in coordination with and is processed the method for zinc abstraction mud and specifically include following steps:
Pretreatment: respectively zinc abstraction mud and adjuvant are dried using microwave, ball is carried out to dried mud and adjuvant
Honed sieve；
Dispensing, batch mixing: extracting screen underflow carries out dispensing and batch mixing；
Valuable metal recovery: mud is placed in microwave reactor and using microwave, mud is heated, and heating process is produced
Raw flue dust is collected；
(4) vitrification: to there being hot sludge residue to continue heating, realize the vitrification of mud；
(5) controlled micro crystallization: the hot residue that step (4) is obtained carries out controlled micro crystallization process.
2. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in step (1) pretreatment, described zinc abstraction mud be in zinc metallurgical process and acid waste water produce containing pb, zn,
The heavy metal zincs such as cd, hg, as smelt mud；Described adjuvant includes sio2、al2o3、na2co3, inhale ripple material, Nucleating Agent, show signs of anger
Agent.
3. a kind of microwave method according to claim 2 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: described sio2Can be the sio such as quartz sand, silica flour2Content is more than 80% raw material.
4. a kind of microwave method according to claim 2 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: described suction ripple material can be fe3o4, graphite powder, silicon carbide powder one or several.
5. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in described step (1) pretreatment, drying sludge microwave output power scope is 800w-1500w, and drying time is 10-
30min；The microwave output power scope that is dried of adjuvant is 400w-850w, and drying time is 5-15min.
6. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in step (2) dispensing, batch mixing, the mixed proportion of each raw material is mud 45-70wt%, sio215-35wt%、al2o33-
7wt%, na2co33-6wt%, suction ripple material 5-20wt%, Nucleating Agent+make toner ＜ 5wt%.
7. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in step (3) valuable metal recovery, microwave output power is 3-15kw, and reactor temperature is 850-1000 DEG C, produces
Flue dust the combination of resistant to elevated temperatures sack cleaner added using the high temperature resistant cyclone dust extractor of steel or surface cooler carry out flue dust collecting.
8. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in step (4) vitrification, heating-up temperature is that 1200 DEG C -1400 DEG C insulation 30-60min carry out vitrification preparation.
9. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: in step (5) controlled micro crystallization, hot residue controlled micro crystallization is first cooled to 850-1000 DEG C and is protected by the way of microwave heating
Warm 30-60min, then it is cooled to 500-600 DEG C of insulation 50min-80min, obtain devitrified glass product after furnace cooling.
10. a kind of microwave method according to claim 1 and controlled micro crystallization work in coordination with the method processing zinc abstraction mud, and its feature exists
In: the mode of heating of step (3)～(5) is all by the way of direct microwave heating and assisted microwave synthesis heating combine.
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| CN109399938A (en) * | 2018-11-07 | 2019-03-01 | 东莞理工学院 | A kind of fly ash from burning city domestic garbage microwave melts Expectation of Glass-Ceramics Used as Decorated Materials and the application of preparation |
| CN109868376A (en) * | 2019-03-12 | 2019-06-11 | 昆明理工大学 | A kind of method that efficient cryogenic recycles mercury in sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966599A (en) * | 2017-04-21 | 2017-07-21 | 内蒙古科技大学 | Structure gradient tailing microcrystal glass prepared by a kind of utilization microwave heating and preparation method thereof |
| CN108191178A (en) * | 2017-12-08 | 2018-06-22 | 上海梵煦环境科技有限公司 | Microwave adds far infrared sludge heavy-metal curing system |
| CN108191178B (en) * | 2017-12-08 | 2021-06-04 | 上海梵煦环境科技有限公司 | Microwave and far infrared sludge heavy metal curing system |
| CN109399938A (en) * | 2018-11-07 | 2019-03-01 | 东莞理工学院 | A kind of fly ash from burning city domestic garbage microwave melts Expectation of Glass-Ceramics Used as Decorated Materials and the application of preparation |
| CN109868376A (en) * | 2019-03-12 | 2019-06-11 | 昆明理工大学 | A kind of method that efficient cryogenic recycles mercury in sludge |
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