CN203976422U - A kind of production unit of Ammonium Heptamolybdate - Google Patents
A kind of production unit of Ammonium Heptamolybdate Download PDFInfo
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- CN203976422U CN203976422U CN201420369911.7U CN201420369911U CN203976422U CN 203976422 U CN203976422 U CN 203976422U CN 201420369911 U CN201420369911 U CN 201420369911U CN 203976422 U CN203976422 U CN 203976422U
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- reactor
- filter plate
- ceramic filter
- ammonium heptamolybdate
- production unit
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Abstract
The utility model relates to a kind of production unit of Ammonium Heptamolybdate, comprise reactor and sheet frame, the middle part of reactor is provided with fine pore ceramic filter plate, and solution enters reactor from reactor import, under the effect of filter pressure, filters by the ceramic filter plate of fine pore.It is few that the utility model obtains Ammoniun Heptamolybdate Solution impurity, and transmittance reaches 0.01%T-0.02%T.The utility model equipment filtration unit is microporous ceramic filter plate, can reduce impurity in solution, improves product quality, reduces production costs.
Description
Technical field
The utility model relates to chemical production technical field, the production unit of the less low-transmittance Ammonium Heptamolybdate of especially a kind of impurity.
Background technology
Ammonium molybdate is one of most widely used molybdate, most important molybdenum intermediate and Chemical products, at home, ammonium tetramolybdate industrial scale, output are very large, quality is also relatively stable, but Ammonium Heptamolybdate manufacturer is less, small scale, except chemical composition better, also there is certain gap as physical performance index and kind compared with abroad in other.
Ammonium Heptamolybdate is intermediates important in molybdenum metallurgical process, it is the main raw material of producing molybdenum powder, molybdenum filament and molybdenum based articles, for oil cobalt, molybdenum catalyst, pigment chemical industry and micro-chemical fertilizer, also for producing catalyzer, metal molybdenum, pigment, metal conditioner, inhibiter, trace element fertilizer etc.Along with develop rapidly, the Ammonium Heptamolybdate of molybdenum high-tech product have become high-tech sector as superconduction, sintering metal, laser, computer, Polymer Synthesizing and detected the indispensable materials such as chemical examination.User is more and more higher to the requirement of quality of materials, adopts traditional technology to can not meet user's requirement.
Utility model content
It is less that the purpose of this utility model is to provide a kind of impurity, the production unit of the low-transmittance Ammonium Heptamolybdate that Ammonium Heptamolybdate finished product transmittance is 0.01%T-0.02%T.
The purpose of this utility model is achieved by the following technical solution
The production unit of Ammonium Heptamolybdate, comprise reactor and sheet frame that band filter is pressed, described reactor is connected by pipeline with sheet frame, reactor is provided with import and outlet, the middle part of reactor is provided with fine pore ceramic filter plate, solution enters reactor from reactor import, under the effect of filter pressure, filters by the ceramic filter plate of fine pore.
Described fine pore ceramic filter plate is made as bell shape structure, and pore is 0.5-3 μ m through the aperture of ceramic filter plate.Described sheet frame is to be also made up of stupalith.
The beneficial effects of the utility model are: with respect to prior art, the utility model provides a kind of Ammonium Heptamolybdate preparation technology's production unit, and the impurity of the Ammoniun Heptamolybdate Solution that obtains is less, and the transmittance of Ammonium Heptamolybdate finished product reaches 0.01%T-0.02%T.The utility model production unit filtration unit used is microporous ceramic filter plate, has avoided the corrosion-prone shortcoming of metal vessel, reduces the impurity in solution, improves the quality of product, has reduced production cost simultaneously.
Brief description of the drawings
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model Ammonium Heptamolybdate production unit.
In figure: 1, sheet frame; 2, reactor; 3, reactor outlet; 4, ceramic filter plate; 5, pipeline; 6, reactor import.
Embodiment
The production technique of Ammonium Heptamolybdate, comprises that pickling, ammonia soak, the step such as the heavy and evaporative crystallization of sedimentation removal of impurities, acid:
Step (1) pickling: get molybdenum oxide: the ratio of nitric acid=10:1, described higher-grade molybdenum oxide, wherein molybdenum content is greater than 55%, and tungsten phosphorus lead content is no more than 0.1%; Described concentration of nitric acid be greater than 98% and purity requirement higher.In solution, add appropriate deionized water, its specific conductivity is lower than 8s, temperature of reaction >=95 DEG C, and soaking time is 1.5h, obtains pickling filter cake;
Step (2) ammonia soaks: pickling filter cake is put in appropriate deionized water, and logical liquefied ammonia is to ph=9, and described liquefied ammonia concentration is greater than 98%, 75 DEG C to 85 DEG C of temperature of reaction, and reaction times≤2h, ph is 7.5-8.5;
Step (3) sedimentation removal of impurities: ammonia soaks solution and enters the reactor filtration of pressing in band from sheet frame, described reactor is connected by pipeline with sheet frame, reactor is provided with import and outlet, reactor middle part is provided with one deck fine pore ceramic plate, described sheet frame is also stupalith, the pore size of fine pore ceramic plate filtration unit is 0.5-3 μ m, and this device utilizes ceramic filter plate to filter solution, obtains thin ammonium molybdate solution.
Step (4) is again carried out ammonia by above-mentioned ammonium molybdate solution and is soaked, adjusting ammonia to soak scavenging solution proportion is 1.1-1.2, ph is 7.0-7.5, temperature≤60 DEG C, adding nitric acid adjusting ph is 2.0-3.0, and temperature≤60 DEG C, obtain Ammoniun Heptamolybdate Solution, by solution vacuumizing filtration at least twice, reduce the impurity in solution;
Step (5) decrease temperature crystalline: step (4) solution that obtains is lowered the temperature, treat that temperature drops to below 25 DEG C, after waiting for that crystal is separated out, carry out centrifuge dripping.Obtain Ammonium Heptamolybdate finished product.
In the present embodiment, in described molybdenum oxide, molybdenum content is greater than 55%, and tungsten phosphorus lead content is no more than 0.1%; Described concentration of nitric acid is greater than 98%, and described deionization electrical conductivity of water is less than 8S.Described liquefied ammonia concentration is greater than 98%.The transmittance of described Ammonium Heptamolybdate finished product is 0.01%T-0.02%T.
As shown in Figure 1, the production unit of low-transmittance Ammonium Heptamolybdate, comprise reactor 2 and sheet frame 1 that band filter is pressed, described reactor 2 is connected by pipeline 5 with sheet frame 1, reactor 2 is provided with import 6 and outlet 3, and the middle part of reactor 2 is provided with the fine pore ceramic filter plate 4 of bell shape structure, in working process, solution enters reactor from the import 6 of reactor 2, under the effect of filter pressure, filters by fine pore ceramic filter plate 4.In the present embodiment, described sheet frame 1 is to be also made up of stupalith, and the aperture of described fine pore ceramic filter plate 4 is 0.5-3 μ m.
Claims (3)
1. the production unit of an Ammonium Heptamolybdate, it is characterized in that: described equipment comprises reactor and the sheet frame that band filter is pressed, described reactor is connected by pipeline with sheet frame, reactor is provided with import and outlet, the middle part of reactor is provided with fine pore ceramic filter plate, solution enters reactor from reactor import, under the effect of filter pressure, filters by the ceramic filter plate of fine pore.
2. the production unit of Ammonium Heptamolybdate according to claim 1, is characterized in that: described fine pore ceramic filter plate is made as bell shape structure, and pore is 0.5-3 μ m through the aperture of ceramic filter plate.
3. the production unit of Ammonium Heptamolybdate according to claim 1 and 2, is characterized in that: described sheet frame is to be also made up of stupalith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369911.7U CN203976422U (en) | 2014-07-05 | 2014-07-05 | A kind of production unit of Ammonium Heptamolybdate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369911.7U CN203976422U (en) | 2014-07-05 | 2014-07-05 | A kind of production unit of Ammonium Heptamolybdate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203976422U true CN203976422U (en) | 2014-12-03 |
Family
ID=51973886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420369911.7U Expired - Fee Related CN203976422U (en) | 2014-07-05 | 2014-07-05 | A kind of production unit of Ammonium Heptamolybdate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203976422U (en) |
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2014
- 2014-07-05 CN CN201420369911.7U patent/CN203976422U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |