CN201367459Y - Device for recycling gold from polishing powder of gold jewelry - Google Patents
Device for recycling gold from polishing powder of gold jewelry Download PDFInfo
- Publication number
- CN201367459Y CN201367459Y CNU2008201796244U CN200820179624U CN201367459Y CN 201367459 Y CN201367459 Y CN 201367459Y CN U2008201796244 U CNU2008201796244 U CN U2008201796244U CN 200820179624 U CN200820179624 U CN 200820179624U CN 201367459 Y CN201367459 Y CN 201367459Y
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- gold
- equipment
- heat exchanger
- incinerator
- gas treatment
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Abstract
The utility model provides a device for recycling gold from the polishing powder of a gold jewelry, comprising an incinerator, a heat exchanger, a tail gas treating tower and an exhaust pipe which are installed and connected with each in sequence. The device adopts a combination way of incinerating, heat changing and tail gas treating. The incinerating process is completed by the spontaneous combustion of processed residual materials. The device has reasonable structure, is beautiful and compact, and achieves the purpose of energy-saving and environment protection. The gold is recycled from the incinerated golden powder by means of a dry method and a wet method; therefore, the recycling efficiency is high.
Description
Technical field
The utility model relates to a kind of industrial recovery system, especially relates to a kind of equipment that is used for reclaiming from the gold jewelry polishing powder gold.
Background technology
Along with the raising of expanding economy and living standards of the people, people are just becoming another consumption hot spot after house, automobile to the consumption of jewellery, and gold jewelry consumption will keep vigorous growth in period from now on.From world wide; gold output begins to be downtrending gradually; major country of production is to the exploitation shortage of capital of gold mine; add some developed countries and reduced the exploitation of gold from the angle of protection Mineral resources, these have all caused occurring, and gold is attachedly deposited less at nature, the phenomenon of difficult exploitation.In addition, because physical and chemical performance characteristics such as the distinctive ductility of gold self, oxidation-resistance, so also be widely used in space flight, air system.In view of the minimizing day by day with output of improving constantly of gold demand amount, the rate of utilization that how to improve gold becomes the common issue with that the gold processing industry is faced.And in the production and processing technology of gold jewelry, the polishing operation is essential, so adopt which kind of method grind to beat the gold powder in the powder to be effectively separated from the paraffin that is bonded together and cotton yarn, just becomes that enterprise has a headache most but problem that must solution.
For realizing the recovery to the gold jewelry powder, method relatively more commonly used at present is to reclaim gold with sodium cyanide solution.Though this method is simple,, it is needed strict keeping and use because employed sodium cyanide is a highly toxic substance.In addition, sodium cyanide is forbidden and the diluted acid blending, otherwise will produce hypertoxic gas HCN, the safety that jeopardizes personnel.Therefore, the safety performance of the current this method that reclaims gold with sodium cyanide solution is lower, is necessary to produce a kind of safety, environmental protection, the high recovery system of gold organic efficiency in the gold jewelry polishing powder.
The utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of rational in infrastructure, energy-conserving and environment-protective, the equipment that reclaims gold from the gold jewelry polishing powder that organic efficiency is high.
To achieve these goals, the utility model adopts following technical proposals:
A kind of equipment that is used for reclaiming from the gold jewelry polishing powder gold comprises the device that sets gradually in the following order and couple together:
Incinerator is used for the polishing powder that contains the winding mixture of paraffin and cotton yarn is calcined;
Heat exchanger is used for the high-temperature flue gas that incinerator is derived is cooled off the purpose that reaches cooling;
The vent gas treatment tower is used for the trapping dust with cooled high-temperature flue gas;
Vapor pipe is used for the residual exhaust of vent gas treatment tower is handled the back discharging.
As the preferred a kind of embodiment of the utility model, the equipment of this recovery gold also comprises recirculation cooler, and described recirculation cooler links to each other with heat exchanger, for the heat exchanger circulation provides refrigerant.
As the preferred another kind of embodiment of the utility model, the equipment of this recovery gold also comprises circulating sedimentation tank, and circulating sedimentation tank is positioned at the recirculation cooler below, contains golden throw out in the washings that is used for described vent gas treatment tower 3 is discharged and collects.
As preferred another embodiment of the utility model, the equipment that this reclaims gold is provided with the induced draft fan of being convenient to the tail gas discharge between its vapor pipe and described vent gas treatment tower.
Wherein, described incinerator is the fixed grate incinerator.
Wherein, described heat exchanger adopts and immerses tubular structure.
Wherein, described vent gas treatment tower adopts the cyclonic water film deduster of water film type and the centrifugal double combination of whirlwind.
Compared with prior art, the beneficial effects of the utility model are: 1) the utility model is combined as a whole burning, heat exchange, vent gas treatment, burning process utilizes the spontaneous combustion of residual processing materials to finish, and compactness rational in infrastructure, attractive in appearance, rate of combustion height can be realized effectively energy-conservation; 2) the utility model has adopted dry method, the wet method two kinds of collection modes that combine to reclaim gold to the gold powder after burning, and its organic efficiency height has reached the gold powder rate of recovery＞99.5%, gold powder leakage rate＜0.5%; 3) the utility model avoids practical conventional sodium cyanide to extract the method for gold and silver, and is safe, environmentally-friendly sanitary.
Description of drawings
Fig. 1 is the technique device structural representation according to recovery gold of the present utility model.
Embodiment
Below in conjunction with accompanying drawing preferred implementation of the present utility model is elaborated.
As shown in Figure 1, be the equipment that is used for reclaiming gold that adopts this method from the gold jewelry polishing powder, comprise setting gradually and couple together multiple arrangement in the following order: incinerator 1, heat exchanger 2, vent gas treatment tower 3 and vapor pipe 4.
Wherein incinerator 1 is used for the polishing powder that contains the winding mixture of paraffin and cotton yarn is calcined.When making gold jewelry, owing in the polishing operation, to use paraffin and cotton yarn, so in polishing powder, can contain gold powder, paraffin and cotton yarn.The winding mixture of considering paraffin and cotton yarn has good combustibility, so select for use the method that this winding mixture is burned in incinerator to reclaim gold in the utility model.Incinerating method makes combustible waste finally become innoxious lime-ash by burning disposal exactly, its process is to make Flammable Solid Class 4.1 refuse and airborne oxygen that combustion reactions at high temperature take place, make its oxygenolysis, thereby reach the purpose that subtracts appearance, removal toxicity and can reclaim the energy.Therefore, the polishing powder of the winding mixture that contains paraffin and cotton yarn is burned at incinerator 1.Incinerator 1 is made up of hardware and refractory materials, and its required thermal source is for being provided by electronically controlled combustion engine, and its flame length is controlled in the 1M.Incinerator can be a kind of in fire grate type incinerator, siege type incinerator or the fluidizing fluid-bed incinerator.The general quantity of twister of considering gold powder, paraffin, cotton yarn is little, can intermittently burn recovery, considers from laid down cost in addition, so can adopt the fixed grate incinerator.
Heat exchanger 2 is used for the high-temperature flue gas that incinerator 1 is derived is cooled off the purpose that reaches cooling.High-temperature flue gas (temperature＞500 ℃) enters into heat exchanger 2 under the guiding of negative pressure, and by with recirculation cooler 5 in cooling fluid carry out the purpose that heat exchange reaches cooling.The main type of heat exchanger 2 has: package shape heat exchanger, two tube-in-tube heat exchanger, single hose heat exchanger and air-cooled type heat exchanger.
Vent gas treatment tower 3 is used for the dust supplementary set of cooled high-temperature flue gas is got off; Vapor pipe 4 is used for the residual exhaust of vent gas treatment tower 3 is handled the back discharging.Vent gas treatment tower 3 can be any in mechanical collector, wet scrubber (claiming wet scrubber again), filtration dust catcher or the electric precipitator.In addition, according in dust removal process, whether making water or other liquid, also fly-ash separator can be divided into dry type and wet type two big classes.In the art, water or liquid make the dust (solids) in the dusty gas or the moistening facility of dust that traps is called as wet scrubber; The facility of the dust in the humid gas is not called as dry collector.In the utility model, because the particle diameter of burning back soot dust granule is very little, and dust has very strong hydrophilicity, so preferential selection wet scrubber.
In the present embodiment, vent gas treatment tower 3 adopts the cyclonic water film deduster mode to come dedusting.Therefore, make high-temperature flue gas enter cyclonic water film deduster through after the heat exchange.Ash-laden gas is further lowered the temperature trapping dust simultaneously through quickening by cyclonic water film deduster under the driving of negative pressure.In a kind of preferred implementation, in order to catch grit to greatest extent, fly-ash separator is made water film type and centrifugal the two the bonded form of whirlwind, in this case, the air-flow that rotation is risen in the fly-ash separator, under action of centrifugal force, dust is caught by the cylindrical shell moisture film to be sticked, gas is inverse motion with respect to the moisture film motion, and this fly-ash separator surpasses 95% to the dust catching rate below the particle diameter 5 μ m.Captive grit is collected in the fly-ash separator bottom down, finishes the dust removal process of tail gas thus.
Contained sulfurous gas will become the topmost gaseous pollutant that influences air quality in the flue gas after dedusting.Contain SO in the flue gas
2Belong to low concentration SO
2Waste gas.Because SO
2Reclaim uneconomical, therefore to SO
2Control based on the flue gas desulfurization method.In the utility model, before exhaust emissions is gone out, adopt wet desulphurization (abandoning method) treatment process, reasonable on this process economics, technical advanced person, suitable general flue gas desulfurization technique.Particularly, make absorption agent with NaOH alkali lye, restriction is little, alkaline consumption is little, solubleness is high, receptivity is big because of NaOH originates, so washing contains SO
2Flue gas can receive better treatment effect.This method equipment is simple, and processing ease is inhaled the sulphur efficiency height.
Wherein, recirculation cooler 5 is set in the equipment of this recovery gold, recirculation cooler 5 links to each other with heat exchanger 2, and purpose is to provide refrigerant for heat exchanger 2 circulations.In the heat exchanger 2, the refrigerant that carries out heat exchange with high-temperature flue gas needs constantly to upgrade, and recirculation cooler 5 is exactly the equipment that refrigerant that can be practical is provided for heat exchanger 2 specially.
In addition, as the preferred a kind of preferred version of the utility model, the equipment of this recovery gold also comprises circulating sedimentation tank 6, circulating sedimentation tank 6 is positioned at recirculation cooler 5 belows, be used for the golden throw out that contains in the washings of described vent gas treatment tower 3 drainings is collected, the bronze dirt of taking out of that contains reclaimed once more and handles being used for.
As the preferred a kind of preferred version of the utility model, the equipment that this reclaims gold is provided with the induced draft fan of being convenient to the tail gas discharge 7 between its vapor pipe 4 and described vent gas treatment tower 3.
The utility model is by being combined as a whole burning, heat exchange, vent gas treatment, especially burning process utilizes the spontaneous combustion of residual processing materials to finish, can realize effectively energy-conservation, so according to reasonable, the attractive in appearance compactness of device structure of the present utility model, and energy-conserving and environment-protective.Simultaneously, adopted dry method, wet method to engage two kinds of collection modes to the gold powder after burning and reclaimed gold, its organic efficiency height can be realized the gold powder rate of recovery＞99.5%, gold powder leakage rate＜0.5%, energy consumption＜15 yuan/ten thousand yuan (energy consumption/gold value); And service life of equipment: 5-8.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto.Under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can carry out various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (6)
1. one kind is used for from the equipment of gold jewelry polishing powder recovery gold, wherein, the winding mixture that contains paraffin and cotton yarn in the described polishing powder, it is characterized in that this equipment comprises the device that is arranged in order layout in the following order: the vapor pipe (4) that is used to calcine the incinerator (1) of polishing powder, the heat exchanger (2) that is connected with incinerator (1), the vent gas treatment tower (3) that is connected with heat exchanger (2) and links to each other with vent gas treatment tower (3); The equipment of this recovery gold also comprises recirculation cooler (5), and described recirculation cooler (5) links to each other with heat exchanger (2), for heat exchanger (2) circulation provides refrigerant.
2. the equipment of recovery gold according to claim 1, it is characterized in that, also comprise circulating sedimentation tank (6), circulating sedimentation tank (6) is positioned at recirculation cooler (5) below, is used for auriferous throw out in the washings of described vent gas treatment tower (3) draining is collected.
3. the equipment of recovery gold according to claim 1 is characterized in that, is provided with the induced draft fan of being convenient to the tail gas discharge (7) between described vapor pipe (4) and described vent gas treatment tower (3).
4. the equipment of recovery gold according to claim 1 is characterized in that, described incinerator (1) is the fixed grate incinerator.
5. the equipment of recovery gold according to claim 1 is characterized in that, described heat exchanger (2) adopts and immerses tubular structure.
6. according to the equipment of the described recovery gold of one of claim 1-5, it is characterized in that described vent gas treatment tower (3) adopts the cyclonic water film deduster of water film type and the centrifugal double combination of whirlwind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201796244U CN201367459Y (en) | 2008-12-01 | 2008-12-01 | Device for recycling gold from polishing powder of gold jewelry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201796244U CN201367459Y (en) | 2008-12-01 | 2008-12-01 | Device for recycling gold from polishing powder of gold jewelry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201367459Y true CN201367459Y (en) | 2009-12-23 |
Family
ID=41486353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201796244U Expired - Fee Related CN201367459Y (en) | 2008-12-01 | 2008-12-01 | Device for recycling gold from polishing powder of gold jewelry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201367459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042032A (en) * | 2017-03-06 | 2017-08-15 | 江苏省特种设备安全监督检验研究院南通分院 | Energy-saving graphite multitube smoke duster, its method of work and its repair method |
-
2008
- 2008-12-01 CN CNU2008201796244U patent/CN201367459Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042032A (en) * | 2017-03-06 | 2017-08-15 | 江苏省特种设备安全监督检验研究院南通分院 | Energy-saving graphite multitube smoke duster, its method of work and its repair method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20121201 |