CN209318406U - A kind of processing of plasma fusing fly ash and metal recovery utilize system - Google Patents

A kind of processing of plasma fusing fly ash and metal recovery utilize system Download PDF

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Publication number
CN209318406U
CN209318406U CN201821052712.8U CN201821052712U CN209318406U CN 209318406 U CN209318406 U CN 209318406U CN 201821052712 U CN201821052712 U CN 201821052712U CN 209318406 U CN209318406 U CN 209318406U
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CN
China
Prior art keywords
ash
plasma
connect
melting furnace
combustion chamber
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Withdrawn - After Issue
Application number
CN201821052712.8U
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Chinese (zh)
Inventor
周春光
张庆麟
严圣军
陈竹
李军
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Canadian Hop Corp Ltd
Jiangsu Tianying Environmental Protection Energy Equipment Co Ltd
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Canadian Hop Corp Ltd
Jiangsu Tianying Environmental Protection Energy Equipment Co Ltd
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Priority to CN201821052712.8U priority Critical patent/CN209318406U/en
Application granted granted Critical
Publication of CN209318406U publication Critical patent/CN209318406U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of processing of plasma fusing fly ash and metal recovery to utilize system, including charging gear, two-part ash melting plant, combustion chamber, wet type desuperheat wash mill, demister, the active carbon bed of material and air-introduced machine;Charging gear is connect with the two-part ash melting plant;Two-part ash melting plant is connect with combustion chamber;Combustion chamber is connect with wet type desuperheat wash mill;Wet type desuperheat wash mill is connect with demister, and demister is connect with the active carbon bed of material;The active carbon bed of material is connect with air-introduced machine.The utility model uses two-part ash melting plant, realizes the harmless treatment of bottom ash and flying dust, while the alkalinous metal in bottom ash and flying dust, heavy metal and other metals being reduced in melting furnace are separately recovered;Combustion chamber ensure that the abundant removing of the pollutants such as combustible component in flue gas;Wet process desuperheat wash mill realizes the deep purifying of the capture recycling and flue gas of the volatilization class salts substances such as alkalinous metal, heavy metal.

Description

A kind of processing of plasma fusing fly ash and metal recovery utilize system
Technical field
The utility model relates to environmental technology fields, and in particular to a kind of plasma bottom ash, fusing fly ash processing and gold Belong to recycling system.
Background technique
House refuse, dangerous waste, which are burned, is still industrial most widely used mature technology processing technique, resulting A large amount of flying dust is because rich in organic pollutants such as heavy metal and dioxin, it is necessary to carry out proper treatment.But flying dust is handled Either technically or in cost, processing difficulty is still very big.Addition chelating agent, which carries out solidification, prevents pollutant in flying dust Leaching be common practice, still, chelating solidify can only also ensure flying dust meet within a certain period of time flying dust leaching it is not exceeded, The harm of tap water and soil is still remained in the long run.
Ash is converted to harmless vitreum in plasma ash melting furnace, and organic matter is able to effectively de- under the high temperature conditions It removing, heavy metal is wrapped in the rock-steady structure of other metals formation, it can solve the leaching problem of slag, but vitreum conduct Material, industrialized utilization is not wide, is generally only used as the use of the construction materials such as roadbed at present.In addition, plasma fusion A large amount of secondary flying ash can be still generated in the process, need to collect landfill or carry out harmless treatment.Water is carried out to secondary flying ash Most alkali metal salt and heavy metallic salt can be dissolved with pickling respectively by washing.It needs to consume a large amount of acid solution in acid cleaning process.
Therefore, although traditional plasma ash fusion technology can carry out volume reduction to flying dust well and pollutant is de- It removes, but the technology still consumes a large amount of energy and water, as the process system of low value-added output of products, in economic cost Upper receiving market pressure.
Utility model content
The purpose of this utility model is carried out excellent for current the problems of plasma ash smelting process system Change to improve and solves insufficient, more economic, the reliable plasma fusing fly ash processing system of release.
In order to solve the above technical problems, the utility model adopts the following technical scheme: at a kind of plasma fusing fly ash Reason and metal recovery utilize system.Using the precious metal in two-part ash melting plant recycling bottom ash, flying dust;Using optimization After-treatment system recycles the metal salt and heavy metal in secondary flying ash.Process system includes charging gear, two-part ash melting dress It sets, combustion chamber, wet type desuperheat wash mill, demister, the active carbon bed of material and air-introduced machine;The charging gear and described two The connection of segmentation ash melting plant;The two-part ash melting plant is connect with the combustion chamber;The combustion chamber and institute The wet type desuperheat wash mill connection stated;The wet type desuperheat wash mill is connect with the demister, the demisting Device is connect with the active carbon bed of material;The active carbon bed of material is connect with air-introduced machine.
Further, the charging gear include flying dust feeding device, bottom ash feeding device, additive feeding device, Mixing arrangement and prilling granulator;The flying dust feeding device, bottom ash feeding device and additive feeding device are mixed with described It attaches together and sets connection;The mixing arrangement is connect with the prilling granulator;The flying dust feeding device, bottom ash feeding device Be provided with speed control on additive feeding device, control charging rate, flying dust, bottom ash and additive with certain ratio into Enter to mixing arrangement and mix, two-part ash melting plant is entered after being granulated by prilling granulator.
Further, the two-part ash melting plant includes plasma ash melting furnace and plasma metal recovery Melting furnace;Setting bottom ash and ash fly into material mouth at the top of plasma ash melting furnace;Be provided in plasma ash melting furnace etc. from Sub- torch and burner are provided with molten bath one in its bottom;Top leakage fluid dram one is arranged in the top in the molten bath one, and bottom is provided with bottom Portion's leakage fluid dram one;Exhanst gas outlet one is arranged in the top of the plasma ash melting furnace;The exhanst gas outlet one and combustion chamber Connection;
Old metal feed inlet, exhanst gas outlet two and reduction are provided at the top of the plasma metal recovery melting furnace Agent feed inlet;It is provided with plasmatorch and burner in plasma metal recovery melting furnace, its bottom is provided with molten bath two;It is molten Top leakage fluid dram two is arranged in the top in pond two, and bottom is provided with bottom leakage fluid dram two;
The plasma metal recovery melting furnace is connect by Drainage pipe with plasma ash melting furnace, Drainage pipe Upper setting control valve valve;One end of the Drainage pipe connects top leakage fluid dram one, and the other end connects old metal feed inlet;Institute The exhanst gas outlet two stated is connect with the combustion chamber, and the reducing agent feed inlet is for adding reducing agent.
Further, the combustion chamber includes combustion chamber body, plasma ash melting furnace gas inlet, metal reduction Recycle melting furnace gas inlet, air intlet and exhanst gas outlet;The combustion chamber body passes through with plasma ash melting furnace The connection of plasma ash melting furnace gas inlet;The combustion chamber body and plasma metal recovery melting furnace passes through metal Reduction recycling melting furnace gas inlet connection;The combustion chamber body is connected by exhanst gas outlet and wet type desuperheat wash mill It connects.
Further, the wet type desuperheat wash mill includes water washing device, electrostatic precipitator and alkaline cleaner;It is described Water washing device connect with electrostatic precipitator;The electrostatic precipitator is connect with the alkaline cleaner.
Further, the water washing device includes water scrubber, reservoir one, recycle liquid pump, filter device and pickling dress It sets;Wastewater outlet is arranged in the washing tower bottom;The wastewater outlet is connected to reservoir one;The water scrubber it is upper Portion is connect by recycle liquid pump and filter device with reservoir one, is recycled back to so that forming one between reservoir one and water scrubber Road;Exhanst gas outlet after the lower part setting washing of the water scrubber;Exhanst gas outlet and the electrostatic precipitation after the washing The connection of device;The electrostatic precipitator bottom pollutant outlet;The pollutant outlet is connect with the reservoir; The filter device is connect with acid dip pickle;Sediment not soluble in water in washing is collected and entered into pickling by filter device In device;The acid dip pickle is provided with the feed inlet being connected to filter device;Acid dip pickle is provided with to be connect with charging gear Solid residue outlet;Acid solution inlet and pickle liquor outlet are additionally provided on acid dip pickle.
Further, the alkaline cleaner includes caustic wash tower and reservoir two;The bottom of the caustic wash tower is provided with useless Liquid outlet;The waste liquid outlet is connected to reservoir two;The top of caustic wash tower is connected by circulation line and reservoir two It connects;Smoke inlet is provided at the top of the caustic wash tower;Exhanst gas outlet after setting dedusting in electrostatic precipitator;The dedusting Exhanst gas outlet is connect with smoke inlet afterwards;Exhanst gas outlet after alkali cleaning, exhanst gas outlet after the alkali cleaning are provided on the caustic wash tower It is connect with the demister.
The utility model is melted using two-part ash, by oxidisability melting furnace, increases the alkalinity gold in bottom ash and flying dust Belong to the volatility with heavy metal, recycled by downstream processing, in addition reduces the chlorinty in slag, facilitate reproducibility melting furnace Middle metal reduction recycling.
The uncombusted ingredient in oxidisability melting furnace and reproducibility melting furnace is sufficiently removed using combustion chamber, such as CO is CO Qualified discharge provide guarantee.
Using the method directly washed, the acid contaminant component containing HCl in flue gas, is caught by washing in melting process It catches, the pH value for washing moisture can reduce, and water acidity degree increases, and can use the effect of this Acidic Liquid, extract acid-soluble substance, reduce The usage amount of acid solution.
The utility model uses wet cottrell system, alkaline cleaner, demister and activated-carbon device, realizes exhaust gas Deep purifying, provide guarantee for flue gas emission is up to standard.
The utility model has the beneficial effects that the utility model uses two-part ash melting plant, bottom ash and flying dust are realized Harmless treatment, while the alkalinous metal in bottom ash and flying dust, heavy metal and other reducible metals are separately recovered, improve production Product added value and system economy;Combustion chamber ensure that the abundant removing of the pollutants such as combustible component in flue gas;Wet process desuperheat is washed Washing device realizes the deep purifying of capture recycling and flue gas of the volatilization class salts substances such as alkalinous metal, heavy metal.
Detailed description of the invention
In order to more clearly illustrate the technical scheme in the embodiment of the utility model, will make below to required in embodiment Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some realities recorded in the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the system structure diagram of the utility model.
Specific embodiment
The technical solution of the utility model will be clearly and completely described by specific embodiment below.
Embodiment 1
As shown in Figure 1, system is utilized for the plasma bottom ash of the utility model, fusing fly ash processing and metal recovery, Including charging gear, two-part ash melting plant, combustion chamber, wet type desuperheat wash mill, demister, the active carbon bed of material and air inducing Machine.
The charging gear of the utility model include flying dust feeding device 1, bottom ash feeding device 2, additive feeding device 23, Mixing arrangement 24 and prilling granulator 3;Flying dust feeding device 1, bottom ash feeding device 2 and additive feeding device 23 with it is described Mixing arrangement 24 connects;The mixing arrangement 24 is connect with the prilling granulator 3;The flying dust feeding device 1, bottom ash It is provided with speed control on feeding device 2 and additive feeding device 13, controls charging rate;Flying dust, bottom ash and additive Mixing arrangement 24 is entered with certain ratio to mix, and enters two-part ash melting plant after being granulated by prilling granulator 3.
The two-part ash melting plant of the utility model includes that plasma ash melting furnace 4 and plasma metal recovery are molten Melt furnace 5;The plasma metal recovery melting furnace of the utility model is reducing atmosphere, and reducing agent is coal, coke or activity Charcoal;Metalliferous industrial residu can also be added in plasma metal recovery melting furnace, carry out melting.The utility model etc. Gas ions ash melting furnace is oxidizing atmosphere, is passed through air or oxygen, and the ratio for controlling air and oxygen adjusts oxygen partial pressure, Control the precipitation of grey salts substances.
Bottom ash is set at the top of plasma ash melting furnace 4 and ash flies into material mouth;It is provided in plasma ash melting furnace Ion torch and burner are provided with molten bath one in its bottom;Top leakage fluid dram 1, bottom setting is arranged in the top in the molten bath one There is bottom leakage fluid dram 1;Exhanst gas outlet 1 is arranged in the top of the plasma ash melting furnace;The bottom ash and ash flies Feed inlet is connect with prilling granulator 3;The exhanst gas outlet 1 is connect with combustion chamber 6.
The top of the plasma metal recovery melting furnace 5 of the utility model is provided with old metal feed inlet 51, flue gas goes out Mouth 2 52 and reducing agent feed inlet 18;It is provided with plasmatorch and burner in plasma metal recovery melting furnace, in its bottom It is provided with molten bath two;Top leakage fluid dram 2 19 is arranged in the top in molten bath two, and bottom is provided with bottom leakage fluid dram 2 20;
The plasma metal recovery melting furnace of the utility model is connect by Drainage pipe with plasma ash melting furnace, Control valve valve is set on Drainage pipe;One end of the Drainage pipe connects top leakage fluid dram 1, the useless gold of other end connection Belong to feed inlet 51;The exhanst gas outlet 2 52 is connect with the combustion chamber 6, and the reducing agent feed inlet is for adding also Former agent.
The combustion chamber of the utility model includes combustion chamber body, plasma ash melting furnace gas inlet 61, metal reduction Recycle melting furnace gas inlet 62, air intlet and exhanst gas outlet 63;The combustion chamber body and plasma ash melting furnace It is connected to by plasma ash melting furnace gas inlet;The combustion chamber body passes through with plasma metal recovery melting furnace Metal reduction recycling melting furnace gas inlet connection;The combustion chamber body passes through exhanst gas outlet and wet type desuperheat wash mill Connection.
The wet type desuperheat wash mill of the utility model includes water washing device, electrostatic precipitator 11 and alkaline cleaner;It is described Water washing device connect with electrostatic precipitator;The electrostatic precipitator is connect with the alkaline cleaner.Water washing device includes Water scrubber 7, reservoir 1, recycle liquid pump 16, filter device 15 and acid dip pickle 25;Waste water is arranged in 7 bottom of water scrubber Outlet;The wastewater outlet is connected to reservoir 1;The top of the water scrubber passes through recycle liquid pump 16 and filter device 15 connect with reservoir 1, so that forming a circulation loop between reservoir one and water scrubber;The setting of one 9 bottom of reservoir There is outlet 1;Exhanst gas outlet after the lower part setting washing of the water scrubber 7;Exhanst gas outlet and described after the washing The connection of electrostatic precipitator 11;The 11 bottom pollutant outlet of electrostatic precipitator;The pollutant outlet with it is described Reservoir connection;The filter device 15 is connect with acid dip pickle 25;Filter device 15 sinks not soluble in water in washing Drop object is collected and entered into acid dip pickle;The acid dip pickle 25 is provided with the feed inlet being connected to filter device;Pickling dress Install the solid residue outlet 27 for being equipped with and connecting with charging gear;Acid solution inlet 29 and acid are additionally provided on acid dip pickle Wash waste liquid outlet 26.
The alkaline cleaner of the utility model includes caustic wash tower 8 and reservoir 2 10;The bottom of the caustic wash tower 8 is provided with useless Liquid outlet;The waste liquid outlet is connected to reservoir 2 10;The top of caustic wash tower passes through circulation line and reservoir two 10 connections;2 10 bottom of reservoir is provided with outlet 2 21;The top of the caustic wash tower 8 is provided with smoke inlet;Electrostatic removes Exhanst gas outlet after setting dedusting on dirt device 11;Exhanst gas outlet is connect with smoke inlet after the dedusting;It is set on the caustic wash tower 8 It is equipped with exhanst gas outlet after alkali cleaning, exhanst gas outlet is connect with the demister 12 after the alkali cleaning.The demister 12 and institute The active carbon bed of material 30 stated connects;The active carbon bed of material 30 is connect by air-introduced machine 13 with chimney 14.
A kind of plasma fusing fly ash of the utility model is handled and metal recovery utilizes method, it is characterised in that: packet Include the following steps:
1) bottom ash and flying dust and additive that incineration system is collected are passed into mixing by feed with certain proportion and fill In setting, prilling granulator is entered after mixing;
2) granular material made by step 1) enters in the plasma ash melting furnace of oxidizing atmosphere, wait from It is melted under the action of sub- torch, the organic pollutants such as dioxin is removed under hot conditions, in the effect of oxidisability and additive Under, sodium, potassium and heavy metal classes substance are volatilized from melting furnace precipitation with certain chemical form, as flue gas enters two combustions In room;The operating temperature of plasma ash melting furnace is at 1300 DEG C to 1600 DEG C;
3) fusant by 2) processing is melted by the plasma metal recovery that top leakage fluid dram enters reproducibility Reducing agent is added in furnace, in furnace to restore the metal in fusant, other can also be added by old metal feed inlet needs That wants melting contains metal waste residue, because of density variation, metal is layered in melting furnace, and it is molten that bottom metal is discharged by bottom drain Liquid completes recycling;Reducing metal recycles the gaseous products in melting furnace, containing a large amount of reducibility gas component, into two Fire room burning;
2) and 3) 4) come into full contact in dual firing chamber with oxygen by the gaseous products generated, complete to burn;
5) contain a large amount of volatility salt in the flue gas through 4) handling, chilling is carried out in water scrubber and remove;Flue gas In particulate matter dust, cooling condensation salts substances entered in reservoir with washing cooling waste water, water-insoluble passed through Filter or flocculating setting discharge;
6) flue gas after 5) washing, purifying enters in wet cottrell, further drop of the removing containing pollutant and Dust;
7) flue gas through 6) handling enters alkaline cleaner, after removing the acidic components not removed in flue gas, sequentially enters Deep purifying is carried out to demister, active carbon layer;It is discharged by air inducing machine travel from chimney after purification;
8) water-insoluble through 5) generating enters in acid dip pickle, and heavy metal salt group is further removed in Acidic Liquid Point, remaining insoluble matter enters in bottom ash and flying dust feed system, reenters melting furnace.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this The conception and scope of type is defined, without departing from the design concept of the present utility model, ordinary skill skill in this field Art personnel should all fall into the protection scope of the utility model to all variations and modifications that the technical solution of the utility model is made, The claimed technology contents of the utility model, are all documented in technical requirements book.

Claims (7)

1. a kind of plasma fusing fly ash processing and metal recovery utilize system, it is characterised in that: including charging gear, two sections Formula ash melting plant, combustion chamber, wet type desuperheat wash mill, demister, the active carbon bed of material and air-introduced machine;The charging gear It is connect with the two-part ash melting plant;The two-part ash melting plant is connect with the combustion chamber;Described Combustion chamber is connect with the wet type desuperheat wash mill;The wet type desuperheat wash mill is connect with the demister, The demister is connect with the active carbon bed of material;The active carbon bed of material is connect with air-introduced machine.
2. a kind of plasma fusing fly ash processing according to claim 1 and metal recovery utilize system, feature exists In: the charging gear includes flying dust feeding device, bottom ash feeding device, additive feeding device, mixing arrangement and granulation Device;The flying dust feeding device, bottom ash feeding device and additive feeding device are connect with the mixing arrangement;It is described Mixing arrangement connect with the prilling granulator;Flying dust feeding device, bottom ash feeding device and the additive charging dress It sets and is provided with speed control, control charging rate, flying dust, bottom ash and additive enter mixing arrangement with certain ratio and mix It closes, two-part ash melting plant is entered after being granulated by prilling granulator.
3. a kind of plasma fusing fly ash processing according to claim 1 and metal recovery utilize system, feature exists In: the two-part ash melting plant includes plasma ash melting furnace and plasma metal recovery melting furnace;Plasma Setting bottom ash and ash fly into material mouth at the top of body ash melting furnace;It is provided with plasmatorch and burner in plasma ash melting furnace, Its bottom is provided with molten bath one;Top leakage fluid dram one is arranged in the top in the molten bath one, and bottom is provided with bottom leakage fluid dram one;Institute State the top setting exhanst gas outlet one of plasma ash melting furnace;The exhanst gas outlet one is connect with combustion chamber;Plasmatorch It can be set with burner on the top of plasma ash melting furnace, i.e., more than bath surface, also can be set at the bottom of melting furnace Portion is designed using immersion;
Be provided at the top of the plasma metal recovery melting furnace old metal feed inlet, exhanst gas outlet two and reducing agent into Material mouth;It is provided with plasmatorch and burner in plasma metal recovery melting furnace, its bottom is provided with molten bath two;Molten bath two Top be arranged top leakage fluid dram two, bottom is provided with bottom leakage fluid dram two;Plasmatorch and burner can be set in plasma The top of body metal recovery melting furnace that is, more than bath surface, also can be set in the bottom of melting furnace, be set using immersion Meter;
The plasma metal recovery melting furnace is connect by Drainage pipe with plasma ash melting furnace, is set on Drainage pipe Set control valve valve;One end of the Drainage pipe connects top leakage fluid dram one, and the other end connects old metal feed inlet;Described Exhanst gas outlet two is connect with the combustion chamber, and the reducing agent feed inlet is for adding reducing agent.
4. a kind of plasma fusing fly ash processing according to claim 1 and metal recovery utilize system, feature exists In: the combustion chamber includes combustion chamber body, plasma ash melting furnace gas inlet, metal reduction recycling melting furnace flue gas Import, air intlet and exhanst gas outlet;The combustion chamber body is melted with plasma ash melting furnace by plasma ash Kiln gas inlet communication;The combustion chamber body and plasma metal recovery melting furnace restores recycling melting furnace by metal Gas inlet connection;The combustion chamber body is connect by exhanst gas outlet with wet type desuperheat wash mill.
5. a kind of plasma fusing fly ash processing according to claim 1 and metal recovery utilize system, feature exists In: the wet type desuperheat wash mill includes water washing device, electrostatic precipitator and alkaline cleaner;The water washing device with it is quiet Electric precipitator connection;The electrostatic precipitator is connect with the alkaline cleaner.
6. a kind of plasma fusing fly ash processing according to claim 5 and metal recovery utilize system, feature exists In: the water washing device includes water scrubber, reservoir one, recycle liquid pump, filter device and acid dip pickle;The water scrubber Wastewater outlet is arranged in bottom;The wastewater outlet is connected to reservoir one;The top of the water scrubber passes through recycle liquid pump It is connect with filter device with reservoir one, so that forming a circulation loop between reservoir one and water scrubber;The washing Exhanst gas outlet after the lower part setting washing of tower;The connection of exhanst gas outlet and the electrostatic precipitator after the washing;It is described Electrostatic precipitator bottom pollutant outlet;The pollutant outlet is connect with the reservoir;The filtering dress It sets and is connect with acid dip pickle;Sediment not soluble in water in washing is collected and entered into acid dip pickle by filter device;It is described Acid dip pickle is provided with the feed inlet being connected to filter device;Acid dip pickle is provided with the solid residue connecting with charging gear Outlet;Acid solution inlet and pickle liquor outlet are additionally provided on acid dip pickle.
7. a kind of plasma fusing fly ash processing according to claim 5 and metal recovery utilize system, feature exists In: the alkaline cleaner includes caustic wash tower and reservoir two;The bottom of the caustic wash tower is provided with waste liquid outlet;Described Waste liquid outlet is connected to reservoir two;The top of caustic wash tower is connect by circulation line with reservoir two;The caustic wash tower Top be provided with smoke inlet;Exhanst gas outlet after setting dedusting in electrostatic precipitator;Exhanst gas outlet and cigarette after the dedusting The connection of gas entrance;Exhanst gas outlet after alkali cleaning is provided on the caustic wash tower, exhanst gas outlet and the demister after the alkali cleaning Connection.
CN201821052712.8U 2018-07-04 2018-07-04 A kind of processing of plasma fusing fly ash and metal recovery utilize system Withdrawn - After Issue CN209318406U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108704926A (en) * 2018-07-04 2018-10-26 加拿大艾浦莱斯有限公司 A kind of processing of plasma fusing fly ash and metal recovery utilize system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108704926A (en) * 2018-07-04 2018-10-26 加拿大艾浦莱斯有限公司 A kind of processing of plasma fusing fly ash and metal recovery utilize system
CN108704926B (en) * 2018-07-04 2021-06-29 加拿大艾浦莱斯有限公司 Plasma fly ash melting treatment and metal recycling system

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