CN207294856U - A kind of processing system of metal solid waste - Google Patents
A kind of processing system of metal solid waste Download PDFInfo
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- CN207294856U CN207294856U CN201721133512.0U CN201721133512U CN207294856U CN 207294856 U CN207294856 U CN 207294856U CN 201721133512 U CN201721133512 U CN 201721133512U CN 207294856 U CN207294856 U CN 207294856U
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Abstract
The utility model provides a kind of processing system of metal solid waste, include ozone generating unit, aeration unit, agitating unit and precipitation unit, the ozone generating unit is connected with aeration unit by the road, the aeration unit is stretched into the agitating unit, and the agitating unit is connected with precipitation unit by the road.A kind of processing system of metal solid waste provided by the utility model, the ozone generating unit of use, the ozone concentration of generation is high, pollution-free, consumption of electrode is low, from the influence of environment temperature and humidity, maintenance cost is low, and under flocculant effect, by the metal solid waste after ozone oxidation, precipitation is separated rapidly, is turned waste into wealth.
Description
Technical field
The utility model belongs to metallurgical technical field, is related to a kind of processing system of metal solid waste, and in particular to a kind of
The system handled using low tension solution generation ozone the metal solid waste produced in metallurgy.
Background technology
Noble metal (gold, silver etc.) method is smelted, is most generally to use cyanide (CyanideCN) for a long time, as carrying
The chemical raw material taken.But cyanide contains strong toxicity, great environmental pollution can be brought, the pollutant (tailing) of generation is to cause
Influence the disaster of ecology.Therefore, the smelting process for substituting cyanide is very necessary and urgent thing, is more had at present
Effect is to replace cyanide using thiosulfate (Thiosulphate).But noble metal is smelted using thiosulfate, is had
Many shortcomings, specific such as chemicals usage is more, smelts costly, the low problem of extraction efficiency.
At present, on the metallurgical process of cyanide or thiosulfate, to some vulcanizations (Sulphidic) or it is carbonized
(Carbonanous) extraction of mineral aggregate is extremely difficult that vulcanization and carbide can block noble metal and be poorly soluble, usually solution
Certainly method is the pre-treatment that first mineral aggregate work is aoxidized, such as：High-pressure oxidation, high temperature ovens, compound oxidation etc., then just carry out wet
Forensic chemistry extracts, these methods are complicated and extraction is difficult.
Ozone (Ozone) has the oxidability of extra-heavy, its oxidation number (2.07V) compares hydrogen peroxide (1.77V) and chlorine
(1.4V) is high.Ozone energy fast decoupled is a variety of organic and inorganic matter, makes to be difficult to smelt mineral aggregate and follow-up pollutant
Processing is readily available, and it is very environmentally friendly, it is a kind of ideal scheme for the oxidation pre-treatment for improving metal smelt.It is meanwhile smelly
Oxygen can decompose cyanide again, so that this problem polluted after solving current tailing.
Although ozone is used for having the advantages of very more in metal smelt and rear pollution processing, with conventional method such as Fig. 1,2
The ozone concentration of generation is low, equipment cost is high, system complex.Therefore, it is necessary to existing smelting noble metal (gold, silver etc.)
Structure and its method are further improved.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of processing of metal solid waste
System, the metal for solving in the prior art to produce in the processing metallurgy that shortage processing cost is low, pollution is small, adaptable are consolidated
The problem of useless system.
In order to achieve the above objects and other related objects, the utility model provides a kind of processing system of metal solid waste, bag
Included ozone generating unit, aeration unit, agitating unit and precipitation unit, the ozone generating unit by the road with aeration unit
It is connected, the aeration unit is stretched into the agitating unit, and the agitating unit is connected with precipitation unit by the road.
Preferably, the ozone generating unit includes electrolytic module, anode water tank and cathode water tank, the electrolytic module
Inside include anode region and cathodic region, anode be equipped with the anode region, be equipped with cathode in the cathodic region, the anode region and
Proton exchange membrane is equipped between cathodic region；The anode region is connected through the first water inlet pipe, the first air outlet pipe with anode water tank respectively
Logical, the cathodic region is connected through the second water inlet pipe, the second air outlet pipe with cathode water tank respectively.
Above-mentioned ozone generating unit be according to low-voltage electrolysis method prepare ozone generator, its principle be using water as source of the gas,
Hydrone is carried out ionization under low-voltage high-density current and produce concentration and the high ozone of purity.
It is highly preferred that the anode is titanium (Ti) metallic plate for being electroplate with platinum (Pt) or carbon (C).The anode is in electric current
Under the action of, receive in hydroxide ion OH caused by water electrolysis-Afterwards, betatopic produces ozone and oxygen.
It is highly preferred that the cathode is titanium (Ti) metallic plate.The cathode receives in water electrolysis under the action of electric current
The hydrogen ion H of generation3O+Afterwards, hydrogen is produced.
Working life >=4000h of above-mentioned anode and cathode.
It is highly preferred that the proton exchange membrane is conventional use of proton exchange membrane.Specifically for example, du pont company gives birth to
The Nafion115 type proton exchange membrane of production.The proton exchange membrane is only to allow water and proton hydrate H3O+The film passed through, so that
Separate hydrogen ion and hydroxide ion OH-, and then separate hydrogen and oxygen (including ozone).
It is highly preferred that the gas that first air outlet pipe is discharged into anode water tank is ozone (O3) and oxygen.
It is highly preferred that the gas that second air outlet pipe is discharged into cathode water tank is hydrogen.
It is highly preferred that the ozone generating unit has further included power supply, the power supply is electrically connected with anode, cathode respectively.
The power supply is anode, cathode provides electric current.
It is further preferred that the power supply is low-tension supply, the voltage of the low-tension supply is 3-12V.
It is highly preferred that liquid level equilibrium pipe is equipped between the anode water tank and cathode water tank, the anode water tank and cathode
Water tank is connected through liquid level equilibrium pipe.The liquid level equilibrium pipe can balance liquid level in anode water tank and cathode water tank.
It is further preferred that the liquid level equilibrium pipe is equipped with fluid level controller.The fluid level controller uses to be conventional
Fluid level controller.
It is highly preferred that it is additionally provided with first row gas port on the anode water tank.
It is further preferred that the first row gas port is oxygen outlet.The gas of the oxygen outlet discharge includes ozone
(O3) and oxygen, the percentage by weight that the ozone accounts for discharge gas is 18-20%.
It is highly preferred that it is additionally provided with second exhaust port on the cathode water tank.
It is further preferred that the second exhaust port is row's hydrogen mouth.
Preferably, the aeration unit is aerator.The bubble that the aerator aeration produces is micro/nano level bubble.Institute
The bubble that stating aeration unit makes ozone form micro/nano level is aerated.
It is highly preferred that a diameter of 100nm-500 μm of the micro/nano level bubble.
Preferably, the agitating unit is vortex agitator tank.The vortex agitator tank is stirred by agitating vane rotation
Mix.The fluid sample for the solid waste containing metal that need to be handled is placed with the precipitation unit.Make micro/nano level in the precipitation unit
After ozone bubbles are mixed with the fluid sample of the solid waste containing metal, micro/nano level ozone bubbles contact solid waste metal makes its oxygen
Change.
Preferably, the precipitation unit is sedimentation basin, and the sedimentation basin is respectively equipped with solid outlet and liquid outlet.It is described
Separation of solid and liquid is carried out to sample using flocculant in sedimentation basin.
Preferably, flocculant is equipped with the precipitation unit, the flocculant is flocculent carbon and silicon flocculant.
It is highly preferred that the flocculent carbon is ball shaped nano carbon, diameter≤100nm of the ball shaped nano carbon.
It is highly preferred that the silicon flocculant is ball shaped nano hole silicon, a diameter of 100- of silicon hole of ball shaped nano hole silicon
500nm, a diameter of 10-50 μm of silicon ball.It is further preferred that a diameter of 200-400nm of silicon hole of ball shaped nano hole silicon, silicon
Bulb diameter is 20-40 μm.
As described above, a kind of processing system of metal solid waste provided by the utility model, has the advantages that：
(1) processing system of a kind of metal solid waste provided by the utility model, the ozone generating unit of use, is by low
Piezoelectricity Xie Shui produces the ozone of high concentration, its raw material only needs water, it is not necessary to other any auxiliary materials and additive.
(2) processing system of a kind of metal solid waste provided by the utility model, the ozone generating unit of use, generation it is smelly
Oxygen concentration is high, and the ozone amount produced considerably beyond traditional ozone generator, reaches as high as 20wt%；Meanwhile the ozone occurs
Oxynitrides (such as nitric oxide, nitrogen dioxide), no carcinogen, without any two are not contained in the ozone gas that unit produces
Secondary pollution.
(3) processing system of a kind of metal solid waste provided by the utility model, the ozone generating unit of use, using low electricity
Pressure, non-contact electric is dangerous, does not produce radiated electromagnetic wave, does not produce electromagnetic pollution；At the same time consumption of electrode it is low, can continuous work, the service life
Up to 4000 it is small when.
(4) processing system of a kind of metal solid waste provided by the utility model, the ozone generating unit of use, from environment
The influence of temperature and humidity, can be resistant to 90% humidity, can be adapted to work in wet environment；Ozone generating unit production at the same time
Ancillary equipment that is ozoniferous cheap, and need not pre-processing, reduces failure rate, reduces maintenance cost.
Brief description of the drawings
Fig. 1 is shown as a kind of overall structure diagram of the processing system of metal solid waste of the utility model.
Fig. 2 is shown as the structure diagram of the low-voltage electrolysis ozone generating unit in the utility model.
Reference numeral
1 ozone generating unit
11 electrolytic modules
111 anode regions
1111 anodes
112 cathodic regions
1121 cathodes
113 proton exchange membrane
12 anode water tanks
121 first row gas ports
13 cathode water tanks
131 second exhaust port
14 first water inlet pipes
15 first air outlet pipes
16 second water inlet pipes
17 second air outlet pipes
18 power supplys
19 liquid level equilibrium pipes
2 aeration units
3 agitating units
4 precipitation units
41 solid outlets
42 liquid outlets
Embodiment
Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Please refer to Fig.1 to Fig. 2.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, be not limited to the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
Revealed technology contents are obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", " left side ",
The term on " right side ", " centre " and " one " etc., is merely convenient to understanding for narration, and it is enforceable to be not used to restriction the utility model
Scope, its relativeness are altered or modified, enforceable when being also considered as the utility model in the case where changing technology contents without essence
Category.
As shown in Figs. 1-2, the processing system of a kind of metal solid waste provided by the invention, includes ozone generating unit 1, exposes
Gas unit 2, agitating unit 3 and precipitation unit 4, the ozone generating unit 1 are connected with aeration unit 2 by the road, the exposure
Gas unit 2 is stretched into the agitating unit 3, and the agitating unit 2 is connected with precipitation unit 4 by the road.
In a preferred embodiment, as shown in Fig. 2, the ozone generating unit 1 includes electrolytic module 11, anode
Water tank 12 and cathode water tank 13, include anode region 111 and cathodic region 112 in the electrolytic module 11, in the anode region 111
Equipped with anode 1111, cathode 1121 is equipped with the cathodic region 112, proton is equipped between the anode region 111 and cathodic region 112
Exchange membrane 113；The anode region 111 is connected through the first water inlet pipe 14, the first air outlet pipe 15 with anode water tank 12 respectively, described
Cathodic region 112 is connected through the second water inlet pipe 16, the second air outlet pipe 17 with cathode water tank 13 respectively.
Further, the anode 1111 is titanium (Ti) metallic plate for being electroplate with platinum (Pt) or carbon (C).The anode
1111 under the action of electric current, receives in hydroxide ion OH caused by water electrolysis-Afterwards, betatopic produces ozone and oxygen.
The cathode 1121 is titanium (Ti) metallic plate.The cathode 1121 receives in water caused by water electrolysis under the action of electric current
Close hydrogen ion H3O+Afterwards, hydrogen is produced.Working life >=4000h of above-mentioned anode 1111 and cathode 1121.
Further, the proton exchange membrane 113 is conventional use of proton exchange membrane.Specifically for example, Dupont is public
Take charge of the Nafion115 type proton exchange membrane of production.The proton exchange membrane 113 is only to allow water and proton hydrate H3O+Pass through
Film, so as to separate hydrogen ion and hydroxide ion OH-, and then separate hydrogen and oxygen (including ozone).
Further, as shown in Fig. 2, the ozone generating unit 1 has further included power supply 18, the power supply 18 respectively with sun
Pole 1111, cathode 1121 are electrically connected.The power supply 18 is low-tension supply, and the voltage of the low-tension supply is 3-12V.The power supply
18 be anode 1111, cathode 1121 provides electric current.
Further, as shown in Fig. 2, being equipped with liquid level equilibrium pipe 19, institute between the anode water tank 12 and cathode water tank 13
Anode water tank 12 is stated with cathode water tank 13 through liquid level equilibrium pipe 19 to be connected.The liquid level equilibrium pipe 19 can balance anode water tank
12 and cathode water tank 13 in liquid level.The liquid level equilibrium pipe 19 is equipped with fluid level controller.The fluid level controller makes to be conventional
Fluid level controller.
Further, as shown in Fig. 2, being additionally provided with first row gas port 121 on the anode water tank 12.The first row gas port
121 be oxygen outlet.The gas of the oxygen outlet discharge includes ozone (O3) and oxygen, the ozone accounts for the weight of discharge gas
Percentage is 18-20%.
Further, as shown in Fig. 2, being additionally provided with second exhaust port 131 on the cathode water tank 13.The second exhaust port
131 be row's hydrogen mouth.
In a preferred embodiment, as shown in Figure 1, the aeration unit 2 is aerator, the aerator 2 is aerated
The bubble of generation is micro/nano level bubble.The bubble that the aeration unit 2 makes ozone form micro/nano level is aerated.Further
Ground, a diameter of 100nm-500 μm of the micro/nano level bubble.
In a preferred embodiment, as shown in Figure 1, the agitating unit 3 is vortex agitator tank, the vortex stirring
Tank is stirred by agitating vane rotation.The fluid sample for the solid waste containing metal that need to be handled is placed with the precipitation unit 3.
After micro/nano level ozone bubbles is mixed with the fluid sample of the solid waste containing metal in the precipitation unit 3, micro/nano level is smelly
Oxygen bubbles contact solid waste metal makes its oxidation.
In a preferred embodiment, as shown in Figure 1, the precipitation unit 4 is sedimentation basin, the sedimentation basin is set respectively
There are solid outlet 41 and liquid outlet 42.Separation of solid and liquid is carried out to sample using flocculant in the sedimentation basin.
In a preferred embodiment, as shown in Figure 1, being equipped with flocculant in the precipitation unit 4, the flocculant is
Flocculent carbon and silicon flocculant.The flocculent carbon is ball shaped nano carbon, diameter≤100nm of the ball shaped nano carbon.It is described
Silicon flocculant is ball shaped nano hole silicon, a diameter of 100-500nm of silicon hole of ball shaped nano hole silicon, a diameter of 10-50 μ of silicon ball
m.The a diameter of 200-400nm of silicon hole of ball shaped nano hole silicon, a diameter of 20-40 μm of silicon ball.
With reference to Fig. 1-2, illustrate a kind of use process of the processing system of metal solid waste in the present invention.
After user obtains a kind of processing system of metal solid waste as shown in Figs. 1-2, in embodiment 1, it would be desirable to locate
The fluid sample of the solid waste containing metal of reason, which is put into agitating unit 3, to be stirred, while the ozone that ozone generating unit 1 is produced
Agitating unit 3 is passed through through aeration unit 2, ozone is aoxidized the metal solid waste in fluid sample, the ozone is in every 1ml
Concentration >=3ppm in the fluid sample of the solid waste containing metal, is preferably 3-10ppm.Agitating unit 3 is vortex agitator tank, and vortex stirs
Tank is mixed to be stirred by agitating vane rotation.Working environment humidity≤90% of ozone generating unit 1.Aeration unit 2 is exposure
Gas device, the bubble that the aeration of aerator 2 produces is micro/nano level bubble, a diameter of 100nm-500 μm of micro/nano level bubble.
Wherein, ozone generating unit 1 produces ozone, is to place water, anode respectively in anode water tank 12 and cathode water tank 13
Water in water tank 12 flows into the anode region 111 in electrolytic module 11 through the first water inlet pipe 14, and the water in cathode water tank 13 is through second
Water inlet pipe 16 flow into electrolytic module 11 in cathodic region 112, then by power supply 18 respectively to the anode 1111 in anode region 111,
Cathode 1121 in cathodic region 112 provides low-tension supply, and water in anode region 111 and cathodic region 112 is electrolysed, and produces water
Hydrogen ion and hydroxide ion are closed, finally, hydrogen ion enters cathodic region 112 through proton exchange membrane, is produced by cathode 1121
Raw hydrogen, and flow into cathode water tank 13 through the second air outlet pipe 17 and discharged by second exhaust port 131；Hydroxide ion is in anode region
111, the mixed gas produced by anode 1111, and flow into anode water tank 12 through the first air outlet pipe 15 and pass through first row gas port
121 discharges.Wherein, low-tension supply 3-12V.Anode 1111 is the titanium mesh for being electroplate with platinum or carbon.Cathode 1121 is titanium
Metallic plate.Working life >=4000h of anode 1111 and cathode 1121.Proton exchange membrane 113 is du pont company's production
Nafion115 type proton exchange membrane.Mixed gas is the mixed gas of ozone and oxygen, and ozone accounts for the weight percent of mixed gas
Than for 18-20%.Ozone generating unit 1 produces ozoniferous performance data results and is shown in Table 1.
Then, the product for aoxidizing gained is entered into precipitation unit 4 by the road, first adds flocculent carbon and reacted with oxidation product
Filamentous suspended matter is formed, silicon flocculant is added and reacts to form solid-liquid layering with oxidation product, so as to fulfill separation of solid and liquid.Precipitation
Unit 4 is sedimentation basin.Flocculent carbon is ball shaped nano carbon, diameter≤100nm of the ball shaped nano carbon.Silicon flocculant is spherical
Nano-pore silicon, a diameter of 100-500nm of silicon hole of ball shaped nano hole silicon, preferably 200-400nm, a diameter of 10-50 μm of silicon ball,
Preferably 20-40 μm.Oxidation product is 100 with the mass ratio that flocculent carbon adds:1-100:12, it is preferably 100:3-100:
10.Oxidation product is 100 with the mass ratio that silicon flocculant adds:0.05-100:2, it is preferably 100:0.1-100:1.By
After flocculant process, oxidation product realizes obvious solid-liquid layering, so as to separate solid-liquid.Metal solid waste after separation, can again into
The follow-up harmless treatment (including the physics such as high-temperature roasting, chemical extraction, freezing separation, chemistry and biological means) of row, to mineral aggregate
Or after pollutant is handled, product is extracted, recycle, turn waste into wealth.
Meanwhile occurred in comparative example 1 using double cooling ozone of the insulating ceramics structure based on corona discharge method principle
Device produces ozone, and performance data results are shown in Table 1.Using the smelly of the glass structure based on corona discharge method principle in comparative example 2
Oxygen Generator produces ozone, and performance data results are shown in Table 1.
Table 1
As shown in Table 1, embodiment 1 is compared with the processing system and its application method of sample in comparative example 1-2, embodiment 1
In processing system only need water, it is not necessary to other any auxiliary materials and additive, the ozone concentration of generation is high, considerably beyond
The ozone amount that traditional ozone generator produces, reaches as high as 20wt%；Meanwhile the processing system generation in embodiment 1 is smelly
Oxynitrides (such as nitric oxide, nitrogen dioxide) is not contained in carrier of oxygen, no carcinogen, without any secondary pollution, it is adopted
With low-voltage, non-contact electric is dangerous, does not produce radiated electromagnetic wave, does not produce electromagnetic pollution；Consumption of electrode is low at the same time, can continuous work
Make, the service life may be up to 4000 it is small when.Processing system in embodiment 1 can be resistant to 90% from the influence of environment temperature and humidity
Humidity, can be adapted to work in wet environment；Ozone generating unit production at the same time is ozoniferous cheap, produces per hour
The operating cost of 1g ozone is only 0.08 yuan, and the ancillary equipment that need not be pre-processed, reduce failure rate, reduce safeguard into
This.
In conclusion a kind of processing system of metal solid waste provided by the utility model, the ozone generating unit of use, production
Raw ozone concentration is high, and pollution-free, consumption of electrode is low, and from the influence of environment temperature and humidity, maintenance cost is low, and is flocculating
Under agent effect, by the solid containing heavy metal after ozone oxidation, precipitation is separated rapidly, is turned waste into wealth.So this practicality is new
Type effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.
Claims (10)
1. a kind of processing system of metal solid waste, it is characterised in that include ozone generating unit (1), aeration unit (2), stir
Unit (3) and precipitation unit (4) are mixed, the ozone generating unit (1) is connected with aeration unit (2) by the road, the aeration
Unit (2) is stretched into the agitating unit (3), and the agitating unit (3) is connected with precipitation unit (4) by the road.
A kind of 2. processing system of metal solid waste according to claim 1, it is characterised in that the ozone generating unit
(1) include electrolytic module (11), anode water tank (12) and cathode water tank (13), include anode in the electrolytic module (11)
Area (111) and cathodic region (112), the anode region (111) is interior to be equipped with anode (1111), and the moon is equipped with the cathodic region (112)
Pole (1121), is equipped with proton exchange membrane (113) between the anode region (111) and cathodic region (112)；The anode region (111)
It is connected respectively through the first water inlet pipe (14), the first air outlet pipe (15) with anode water tank (12), the cathodic region (112) passes through respectively
Second water inlet pipe (16), the second air outlet pipe (17) are connected with cathode water tank (13).
3. the processing system of a kind of metal solid waste according to claim 2, it is characterised in that the anode (1111) is electricity
It is coated with the titanium mesh of platinum；The cathode (1121) is titanium mesh.
A kind of 4. processing system of metal solid waste according to claim 2, it is characterised in that the ozone generating unit
(1) power supply (18) has been further included, the power supply (18) is electrically connected with anode (1111), cathode (1121) respectively.
A kind of 5. processing system of metal solid waste according to claim 2, it is characterised in that the anode water tank (12) and
Liquid level equilibrium pipe (19) is equipped between cathode water tank (13), the anode water tank (12) and cathode water tank (13) are through liquid level equilibrium pipe
(19) it is connected.
6. the processing system of a kind of metal solid waste according to claim 2, it is characterised in that on the anode water tank (12)
It is additionally provided with first row gas port (121)；Second exhaust port (131) is additionally provided with the cathode water tank (13).
7. the processing system of a kind of metal solid waste according to claim 1, it is characterised in that the aeration unit (2) is
Aerator, the bubble that aerator (2) aeration produces is micro/nano level bubble.
8. the processing system of a kind of metal solid waste according to claim 1, it is characterised in that the agitating unit (3) is
Vortex agitator tank.
9. the processing system of a kind of metal solid waste according to claim 1, it is characterised in that the precipitation unit (4) is
Sedimentation basin, the sedimentation basin are respectively equipped with solid outlet (41) and liquid outlet (42).
10. the processing system of a kind of metal solid waste according to claim 1, it is characterised in that in the precipitation unit (4)
Equipped with flocculant, the flocculant is flocculent carbon and silicon flocculant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133512.0U CN207294856U (en) | 2017-09-06 | 2017-09-06 | A kind of processing system of metal solid waste |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133512.0U CN207294856U (en) | 2017-09-06 | 2017-09-06 | A kind of processing system of metal solid waste |
Publications (1)
| Publication Number | Publication Date |
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| CN207294856U true CN207294856U (en) | 2018-05-01 |
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ID=62446085
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| CN201721133512.0U Expired - Fee Related CN207294856U (en) | 2017-09-06 | 2017-09-06 | A kind of processing system of metal solid waste |
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| Country | Link |
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2017
- 2017-09-06 CN CN201721133512.0U patent/CN207294856U/en not_active Expired - Fee Related
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