CN100479909C - Spray drying and doping apparatus for multicomponent composite RE-W electrode material - Google Patents
Spray drying and doping apparatus for multicomponent composite RE-W electrode material Download PDFInfo
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- CN100479909C CN100479909C CNB2007101189523A CN200710118952A CN100479909C CN 100479909 C CN100479909 C CN 100479909C CN B2007101189523 A CNB2007101189523 A CN B2007101189523A CN 200710118952 A CN200710118952 A CN 200710118952A CN 100479909 C CN100479909 C CN 100479909C
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Abstract
The present invention relates to one kind of spray drying and doping apparatus for multicomponent composite RE-W electrode material, and belongs to the field of powder metallurgy technology. The apparatus includes a liquid distributing tank, a sealed liquid tank, an air compressor and a spray drying mixer connected together, as well as a first mechanical pump, a steam generator, a waste liquid collector, a waste water treating system and a second mechanical pump. The apparatus of the present invention can simplify the composite RE-W electrode making process by means of combining the doping step, the drying step and mixing step into one integral step, and has the advantages of environment friendship, low power consumption, easy control, etc.
Description
Technical field
The present invention relates to a kind of spray drying and doping apparatus for multicomponent composite RE-W electrode material, specifically is by high-pressure spray gun, realizes the even doping and the dry apparatus of liquid salt and solid state powder, belongs to field of powder metallurgy,
Background technology
PM technique development at present is very fast, powder mixes and can be divided into liquid liquid as the key technology in the field of powder metallurgy according to the state of alloy and mix, liquid-solid doping, admittedly three kinds Gu mix, for multiplex composite rare-earth tungsten electrode production, that adopts is mainly liquid-solid doping way, this method can realize evenly mixing, tradition doping process is to carry out in the pot the inside of mixing, the compound that adopts the method to obtain uniform doping generally need mix through the overdoping pot, the electric dry oven oven dry, sieve, close batch mixing material three road technologies, specifically the APT (ammonium paratungstate) that is about to 150Kg puts into the pot that mixes, with adding total amount in 50 liters of deionized waters is that the rare earth nitrades of 7.4Kg is mixed with dilute solution, join then in the pot that mixes, start agitating device after 10 minutes, can realize the even doping of fine earth nitrate solution and APT, pot interior heater then mixes, pot interior material that will mix stirs when being concentrated into pasty state, stop to stir, when drying to Powdered (humidity), stop oven dry, the wet-milling that mixes is put into electric dry oven dries, expected 80 mesh sieves removal oversize after the oven dry, generally three pots of material are closed the batch mixing material, just can obtain the dried powder of uniform doping.As seen this method complex process, labour intensity is big, and the waste gas that the raw material decomposes produces in the process is difficult to concentrate and reclaims, contaminated environment, and be that complete wetting APT adds a large amount of deionized waters when mixing, need again after the doping it is evaporated, power consumption is big, causes the production cost of tungsten electrode to increase.
Summary of the invention
Main purpose of the present invention is to overcome the technical limitations that above-mentioned doping pot doping power consumption is big, operation is many, easily pollute, on the basis of existing spray-drying batch mixer, adopt the spray-drying doping techniques to realize evenly mixing and dry equipment for solving the technical problem that the rare earth nitrades saturated solution can not complete wetting APT.
In order to address the above problem, the present invention has taked following technical scheme.Mainly include by the interconnective liquid pool 8 of pipeline, sealing and add flow container 9, air compressor machine 7, spray-drying batch mixer 11, steam generator 15, waste collection jar 12, Waste Water Treatment 14, first mechanical pump 10 and second mechanical pump 13; Wherein,
First mechanical pump 10 is irritated 9 with the sealing liquid feeding and is linked to each other, and connecting pipe is provided with evacuating valve 3;
The discharging opening of sealing liquid feeding filling 9 links to each other with the gun slot of spray-drying batch mixer 11, and connecting pipe is provided with liquid feeding valve 5;
Vapour-recovery unit 16 is connected with the heating source outlet of spray-drying batch mixer 11 by metal pipe with heat-insulating;
Spray-drying batch mixer 11 links to each other with waste collection device 12, and the leakage fluid dram of waste collection device 12 links to each other with Waste Water Treatment 14, and connecting pipe is provided with draining valve 6, and the bleeding point of waste collection device 12 links to each other with second mechanical pump 13.
Advantage of the present invention is:
1) 1 kilogram of APT of the every doping of the method can save 1 liter of deionized water, reduced the consumption of energy in the dry run, 1 kilogram of material that mixes of the every production of original production process needs consumed energy 1KWh, and 1 kilogram of material consumed energy 0.3KWh that mixes of present every production, as seen adopt the method, conventional doping pot mixes can save energy 0.7KWh/Kg, thereby this method economical and energy saving.
2) this method adopts vacuum drying, is in low vacuum state when promptly charge can is dry, thereby the moisture in the material evaporates the shortening incorporation time easily.Can realize efficient doping.
3) the alloy drying is carried out in closed container, therefore the waste gas that part APT decomposition causes in the dry run is not directly entering atmosphere, but by waste collection jar 12 centralized collection, waste liquid is handled by the Waste Water Treatment 14 of specialty, thereby this method environmental protection.
4) this method adopts mechanical pump to seal to add the adding of the liquid adulterant of flow container, the controlled doping agent accurately of this method how much, and the waste that can not produce dopant solution, so doping is controlled easily.
5) this method is promptly mixed, dries, is closed the batch mixing material with original three process and lumps together, in the minimizing
Between link, just reduced the possibility of contaminating impurity material, the suction of adulterant is not produced with pump with extruding
Give birth to contact, can not cause adulterant to pollute, come impurity can for the strip that will process.
Description of drawings
Fig. 1 multiplex composite rare-earth tungsten electrode spray-drying implantation equipment schematic diagram
Among the figure: 1, charging valve, 2, the pressurization valve, 3, evacuating valve, 4, steam valve, 5, the liquid feeding valve, 6, draining valve, 7 air compressor machines, 8, liquid pool, 9, the sealing liquid feeding irritates, 10, first mechanical pump, 11, the spray-drying batch mixer, 12, the waste collection device, 13, second mechanical pump, 14, Waste Water Treatment, 15, steam generator, 16, vapour-recovery unit.
The specific embodiment
Describe present embodiment in detail below in conjunction with accompanying drawing 1.
As shown in Figure 1, present embodiment mainly includes liquid pool 8, sealing adds flow container 9, air compressor machine 7, spray-drying batch mixer 11, steam generator 15, waste collection jar 12, Waste Water Treatment 14, first mechanical pump, 10, the second mechanical pumps 13.Wherein, the annexation between the each several part is as follows:
First mechanical pump 10 is irritated with the sealing liquid feeding by vacuum hose and is linked to each other, and has extraction valve on the vacuum hose
Door 3;
The sealing liquid feeding is irritated 9 its discharging openings and is linked to each other by the gun slot of pvc pipe with spray-drying batch mixer 11; Have liquid feeding valve 5 on the pvc pipe;
Vapour-recovery unit 16 is connected with the heating source outlet of spray-drying batch mixer 11 by metal pipe with heat-insulating;
Spray-drying batch mixer 11 links to each other with waste collection device 12 by vacuum hose; The leakage fluid dram of waste collection device 12 and Waste Water Treatment 14 link to each other by pvc pipe, have draining valve 6 on the pvc pipe; The bleeding point of waste collection device links to each other with second mechanical pump 13 by vacuum hose.
When the spray-drying in the present embodiment was mixed up equipment work, operating procedure was as follows:
At first APT is added in the spray-drying batch mixer 11, the nitrate solution that configures is put into liquid pool 8.Close pressurization valve 2, liquid feeding valve 5 then, open charging valve 1, evacuating valve 3, start first mechanical pump 10, utilize the pressure differential between filling 9 of sealing liquid feeding and the liquid pool 8 that the complete suction sealing of rare earth nitrate solution is added in the flow container 9, close charging valve 1, evacuating valve 3 then, open pressurization valve 2, start air compressor machine, sealing is added in the flow container 9 be forced into 0.3～0.5MPa.Start spray-drying batch mixer 11 subsequently, make it begin uniform rotation.Open liquid feeding valve 5, rare earth nitrate solution enters at a high speed and is positioned over the catheter that seals the liquid feeding pot bottom under anticyclonic effect, sprays at a high speed from spray-drying batch mixer 11 built-in titanium alloy spray guns, realizes evenly mixing with jar interior APT that mixes.Treat that rare earth nitrate solution sprays in the spray-drying batch mixer 11 fully, close liquid feeding valve 5, mix after 10 minutes, start steam generator 15, Open valve 4 is sent into steam in the spray-drying batch mixer 11, and vapor pressure is 2.5～3.5MPa.The steam of discharging from the spray-drying batch mixer reclaims to vapour-recovery unit through metal pipe with heat-insulating.The heating batch mixing is after 60 minutes, this moment, spray-drying batch mixer 11 interior temperature reached 110-115 ℃, valve-off 6, open second mechanical pump 13, begin to vacuumize, with the moisture rapid evaporation that promotes to mix in the spray-drying batch mixer 11 in expecting, steam off valve 4 after 150 minutes, continue to mix after 120 minutes, close spray-drying batch mixer 11, stop to mix.Open spray-drying batch mixer 11, both can take out the rare earth nitrades, the APT mixed-powder that mix.
Claims (1)
1, spray drying and doping apparatus for multicomponent composite RE-W electrode material is characterized in that: mainly include by the interconnective liquid pool of pipeline (8), sealing and add flow container (9), air compressor machine (7), spray-drying batch mixer (11), steam generator (15), waste collection jar (12), Waste Water Treatment (14), first mechanical pump (10) and second mechanical pump (13); Wherein,
Liquid pool (8) is irritated (9) with the sealing liquid feeding and is linked to each other, and connecting pipe is provided with charging valve (1);
Air compressor machine (7) is irritated (9) with the sealing liquid feeding and is linked to each other, and connecting pipe is provided with pressurization valve (2);
First mechanical pump (10) is irritated (9) with the sealing liquid feeding and is linked to each other, and connecting pipe is provided with evacuating valve (3);
The discharging opening that the sealing liquid feeding is irritated (9) links to each other with the gun slot of spray-drying batch mixer (11), and connecting pipe is provided with liquid feeding valve (5);
Steam generator (15) links to each other by the heating source import of metal pipe with heat-insulating with spray-drying batch mixer (11), and connecting pipe is provided with steam valve (4);
Vapour-recovery unit (16) is connected with the heating source outlet of spray-drying batch mixer (11) by insulating tube;
Spray-drying batch mixer (11) links to each other with waste collection device (12), the leakage fluid dram of waste collection device (12) links to each other with Waste Water Treatment (14), connecting pipe is provided with draining valve (6), and the bleeding point of waste collection device (12) links to each other with second mechanical pump (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101189523A CN100479909C (en) | 2007-06-15 | 2007-06-15 | Spray drying and doping apparatus for multicomponent composite RE-W electrode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101189523A CN100479909C (en) | 2007-06-15 | 2007-06-15 | Spray drying and doping apparatus for multicomponent composite RE-W electrode material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101088596A CN101088596A (en) | 2007-12-19 |
| CN100479909C true CN100479909C (en) | 2009-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101189523A Expired - Fee Related CN100479909C (en) | 2007-06-15 | 2007-06-15 | Spray drying and doping apparatus for multicomponent composite RE-W electrode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100479909C (en) |
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2007
- 2007-06-15 CN CNB2007101189523A patent/CN100479909C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101088596A (en) | 2007-12-19 |
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