CN201662322U - Microwave high-temperature smelting device - Google Patents
Microwave high-temperature smelting device Download PDFInfo
- Publication number
- CN201662322U CN201662322U CN2010201575304U CN201020157530U CN201662322U CN 201662322 U CN201662322 U CN 201662322U CN 2010201575304 U CN2010201575304 U CN 2010201575304U CN 201020157530 U CN201020157530 U CN 201020157530U CN 201662322 U CN201662322 U CN 201662322U
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- China
- Prior art keywords
- microwave
- action cavity
- microwave action
- rotating bracket
- metal powder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003723 Smelting Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 40
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 abstract 3
- 239000010970 precious metal Substances 0.000 abstract 2
- 239000000779 smoke Substances 0.000 abstract 2
- 241001417490 Sillaginidae Species 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Constitution Of High-Frequency Heating (AREA)
Abstract
The utility model discloses a microwave high-temperature smelting device. A microwave action cavity body is arranged on a supporting rack, a fireproof heat-preservation layer is built at the inner side of the microwave action cavity body, a graphite crucible is arranged at the middle position on a rotating bracket, an infrared thermocouple is arranged at the middle position of the top part of the microwave action cavity body, a probe of the infrared thermocouple is right opposite to precious metal powder in the graphite crucible, the rotating bracket is connected with a speed reducer by a shaft joint, the speed reducer is connected with an electric motor, the electric motor drives the rotating bracket to rotate after speed reduction of the speed reducer, and a microwave source is arranged on the outer side wall of the microwave action cavity body. A microwave transmitting part is communicated with the microwave action cavity body; in order to prevent overheating of the microwave transmitting part, a cooling device is arranged at the microwave transmitting part of the microwave source; in order to prevent leakage of microwaves in the microwave action cavity body from a smoke outlet, a microwave suppresser is arranged on the inner side wall of the smoke outlet. The microwave high-temperature smelting device smelts the precious metal powder by means of microwave indirect heating; the microwave power and the smelting temperature can be controlled, the heating speed is high, and energy resources are saved.
Description
Technical field
The utility model relates to a kind of smelting apparatus, particularly a kind of microwave high-temperature smelting apparatus that utilizes microwave energy to carry out the noble metal powder high melt.
Background technology
As everyone knows, the melting ingot casting of noble metal powder mainly adopts electrically heated mode, and this mode of heating needs pre-heating temperature elevation, and programming rate is slower, and in temperature-rise period, the loss of heat is bigger, and power consumption is many.Heating using microwave has fast, the energy-saving advantages of firing rate, but microwave can not directly heat noble metal powder, microwave can only adopt the mode of indirect to the heating of noble metal powder, thereby promptly the supporting body of noble metal powder is carried out heating using microwave with the noble metal powder fusion.This just requires the noble metal powder supporting body can the strong absorption microwave and sharply heat up.The good absorber of microwave current mainly contains two big classes: a class is the polarity metal oxide, this class microwave-absorbing body is needed the noble metal powder of fusion to bring other metal impurities into as the supporting body of noble metal powder in heating process easily, influences noble metal purity; Another kind of is graphite and organic matter, and so the general non-refractory of organic matter is can not be as the supporting body of noble metal powder melting.The graphite fusing point is up to 3000 ℃, and the supporting body of making noble metal powder with it is the most desirable.Therefore, can carry out the noble metal powder melting with microwave energy.
Summary of the invention
The purpose of this utility model is for wasting energy of solving that noble metal powder smelting apparatus commonly used exists and problem that heat time heating time is long, and a kind of noble metal powder microwave high-temperature smelting apparatus is provided.
The utility model is by the microwave action cavity, microwave source, bracing frame, decelerator, shaft coupling, rotating bracket, graphite crucible and motor are formed, microwave action cavity inboard is built one deck refractory insulating layer by laying bricks or stones, the microwave action cavity places on the bracing frame, microwave action cavity center of top position is provided with the infra-red heat galvanic couple, the infra-red heat galvanic couple is positioned at microwave action cavity crown center position, its probe noble metal powder in the graphite crucible, microwave action cavity lateral wall is provided with microwave source, microwave source communicates with the microwave action cavity, overheated for preventing microwave emission position, microwave source emission position is equipped with the microwave source cooling device, for preventing that microwave is revealed from exhaust opening in the microwave action cavity, the exhaust opening madial wall is equipped with the microwave TVS, graphite crucible places on the rotating bracket of working chamber, and rotating bracket connects with decelerator by shaft coupling, and motor connects with decelerator, microwave action cavity top is provided with exhaust opening, and microwave action cavity one sidewall is provided with fire door.
The course of work of the present utility model is:
Character according to noble metal powder is set the smelting temperature desired value.Earlier noble metal powder is put into graphite crucible, open the graphite crucible that fire door will fill noble metal powder then and be placed on middle part on the rotating bracket, fasten fire door then, opening motor simultaneously at the uniform velocity slowly rotates rotating bracket, open microwave source and microwave source cooling device afterwards, graphite crucible absorbs microwave and heats up gradually, and noble metal powder is heated up gradually, till temperature rises to setting value.When temperature is higher than setting value, the circuit automatic disconnection, microwave source stops the microwave radiation, and temperature begins to descend; When temperature is lower than setting value, the work of circuit automatic switching on microwave source, the radiation of beginning microwave, temperature rises.The exhaust opening of the flue gas that produces in the melting process through being provided with the microwave TVS discharged, the complete fusion of noble metal powder behind the holding temperature desired value certain hour, open fire door this moment, take out graphite crucible and pour the noble metal liquid of fusion in mold ingot casting with crucible tongs.
Operation principle of the present utility model is:
Adopt graphite crucible to carry out the melting of metal dust as the noble metal powder carrier.The graphite crucible that normal temperature will be equipped with noble metal powder down is placed on the rotating bracket, closing door opened driven by motor rotating bracket rotates, open microwave source cooling device and microwave power supply simultaneously, adjust microwave power, microwave power is strengthened gradually, this moment, microwave was absorbed by graphite crucible, graphite crucible heats up gradually, and then noble metal powder heated, drive graphite crucible by rotating bracket and rotate, make each position of graphite crucible evenly absorb microwave and produce hot-spot to avoid graphite crucible.Observe variations in temperature in the noble metal powder fusion process by the infra-red heat galvanic couple, and according to the size of variations in temperature control microwave power, make state that noble metal powder keeps continuous fusion to avoid the causing boiling of noble metal melt because of microwave power is excessive.Under noble metal heating and melting state, the work cavity temperature of microwave action cavity is very high simultaneously, for reducing the harmful effect that high temperature produces microwave source, needs microwave source is cooled off, and cooling provision adopts the recirculated water cooling.Because of temperature in the microwave action cavity is very high, the material of rotating bracket is a high temperature cemented carbide.The interior residual air of cavity produces oxidation and produces a small amount of flue gas some impurity in the noble metal powder in the fusion process, discharges via exhaust opening, reveals from exhaust opening for preventing microwave, in the exhaust opening madial wall microwave TVS is installed.
The beneficial effects of the utility model are: adopt microwave energy that noble metal powder is carried out melting, and the microwave power adjustable size, smelting temperature is controlled; Microwave indirect noble metal powder, firing rate is fast, energy savings.
Description of drawings
Fig. 1 is the internal structure schematic diagram of the utility model embodiment.
Fig. 2 looks schematic diagram for the master of the utility model embodiment.
The specific embodiment
See also illustrated in figures 1 and 2, be embodiment of the present utility model, it is by microwave action cavity 1, microwave source 3, bracing frame 5, decelerator 6, shaft coupling 7, rotating bracket 8, graphite crucible 9 and motor 14 are formed, microwave action cavity 1 inboard is built one deck refractory insulating layer 4 by laying bricks or stones, microwave action cavity 1 places on the bracing frame 5, the center of top position of microwave action cavity 1 is provided with infra-red heat galvanic couple 10, infra-red heat galvanic couple 10 is positioned at microwave action cavity 1 crown center position, its probe noble metal powder in the graphite crucible 9, microwave action cavity 1 lateral wall is provided with microwave source 3, microwave source 3 communicates with microwave action cavity 1, overheated for preventing microwave emission position, microwave source 3 emission positions are equipped with microwave source cooling device 2, for microwave in the anti-microwave action cavity 1 is revealed from exhaust opening 11, at exhaust opening 11 madial walls microwave TVS 12 is installed, graphite crucible 9 places on the rotating bracket 8 of working chamber 13, rotating bracket 8 connects with decelerator 6 by shaft coupling 7, motor 14 connects with decelerator 6, microwave action cavity 1 top is provided with exhaust opening 11, and microwave action cavity 1 one sidewalls are provided with fire door 15.
The course of work of present embodiment is:
Character according to noble metal powder is set the smelting temperature desired value.Earlier noble metal powder is put into graphite crucible 9, open the graphite crucible 9 that fire door 15 will fill noble metal powder then and be placed on middle part on the rotating bracket 8, fasten fire door 15 then, opening motor 14 simultaneously at the uniform velocity slowly rotates rotating bracket 8, open microwave source 3 and microwave source cooling device 2 afterwards, graphite crucible 9 absorbs microwave and heats up gradually, and noble metal powder is heated up gradually, till temperature rises to setting value.When temperature is higher than setting value, the circuit automatic disconnection, microwave source 3 stops the microwave radiation, and temperature begins to descend; When temperature is lower than setting value, 3 work of circuit automatic switching on microwave source, the radiation of beginning microwave, temperature rises.The exhaust opening 11 of the flue gas that produces in the melting process through being provided with microwave TVS 12 discharged, the complete fusion of noble metal powder behind the holding temperature desired value certain hour, open fire door 15 this moment, take out graphite crucible 9 and pour the noble metal liquid of fusion in mold ingot casting with crucible tongs.
Claims (1)
1. microwave high-temperature smelting apparatus, it is characterized in that: be by the microwave action cavity, microwave source, bracing frame, decelerator, shaft coupling, rotating bracket, graphite crucible and motor are formed, microwave action cavity inboard is built one deck refractory insulating layer by laying bricks or stones, the microwave action cavity places on the bracing frame, microwave action cavity center of top position is provided with the infra-red heat galvanic couple, the infra-red heat galvanic couple is positioned at microwave action cavity crown center position, its probe noble metal powder in the graphite crucible, microwave action cavity lateral wall is provided with microwave source, microwave source communicates with the microwave action cavity, microwave source emission position is equipped with the microwave source cooling device, the exhaust opening madial wall is equipped with the microwave TVS, graphite crucible places on the rotating bracket of working chamber, rotating bracket connects with decelerator by shaft coupling, motor connects with decelerator, and microwave action cavity top is provided with exhaust opening, and microwave action cavity one sidewall is provided with fire door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201575304U CN201662322U (en) | 2010-04-14 | 2010-04-14 | Microwave high-temperature smelting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201575304U CN201662322U (en) | 2010-04-14 | 2010-04-14 | Microwave high-temperature smelting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662322U true CN201662322U (en) | 2010-12-01 |
Family
ID=43232741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201575304U Expired - Lifetime CN201662322U (en) | 2010-04-14 | 2010-04-14 | Microwave high-temperature smelting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197013A (en) * | 2016-06-30 | 2016-12-07 | 陕西友力实业有限公司 | A kind of rotary microwave smelting furnace |
| CN108124333A (en) * | 2018-01-30 | 2018-06-05 | 浏阳市中洲机械科技有限公司 | A kind of microwave heating equipment |
-
2010
- 2010-04-14 CN CN2010201575304U patent/CN201662322U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197013A (en) * | 2016-06-30 | 2016-12-07 | 陕西友力实业有限公司 | A kind of rotary microwave smelting furnace |
| CN108124333A (en) * | 2018-01-30 | 2018-06-05 | 浏阳市中洲机械科技有限公司 | A kind of microwave heating equipment |
| CN108124333B (en) * | 2018-01-30 | 2024-06-11 | 浏阳市中洲机械科技有限公司 | Microwave heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 130012 Changchun Gold Research Institute, No. 6760 nanhu road, Chaoyang District, Changchun, Jilin Co-patentee after: China National Gold Corporation Technology Center Patentee after: Changchun Gold Research Institute Co., Ltd. Address before: 130012 No. 6760 nanhu road, Jilin City, Changchun Province Co-patentee before: China National Gold Corporation Technology Center Patentee before: Changchun Gold Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |