CN205170409U - Superfine molybdenum disulfide's of hypoxemia preparation system - Google Patents
Superfine molybdenum disulfide's of hypoxemia preparation system Download PDFInfo
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- CN205170409U CN205170409U CN201520965085.7U CN201520965085U CN205170409U CN 205170409 U CN205170409 U CN 205170409U CN 201520965085 U CN201520965085 U CN 201520965085U CN 205170409 U CN205170409 U CN 205170409U
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- hypoxemia
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Abstract
The utility model discloses a superfine molybdenum disulfide's of hypoxemia preparation system, including rubbing crusher, rubbing crusher upper portion is provided with the grader, crusher charging hole and airtight charge -in system intercommunication, rubbing crusher passes through the pipeline and is connected with nitrogen gas compression system, the grader pass through the pipeline in proper order with the cyclone collector, cloth bag dust collector, the cloth bag dust collector gas vent is provided with the filter, nitrogen gas compression system includes through pipeline to the air compressor machine that connects gradually, the gas holder, preceding degreaser, lyophilizer, back degreaser, nitrogen generator, nitrogen storage jar and oxygen determination appearance, the oxygen determination appearance passes through tube coupling and rubbing crusher, the filter passes through pipeline and nitrogen generator entry linkage. Adopt the utility model discloses molybdenum disulfide super powder D50=0.4~the 1 mu m of superfine molybdenum disulfide's of hypoxemia preparation system production has effectively protected molybdenum disulfide to smash the in -process simultaneously and not by the oxidation, has reduced moO3 content, and do not increase new process, it is simple and convenient, easily operation.
Description
Technical field
The utility model belongs to powder metallurgical technology, relates to the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia.
Background technology
Molybdenumdisulphide is a kind of important solid lubricant, there is lot of advantages, use under being specially adapted to high temperature, high pressure, heavy loading, diamagnetism environment, that common liquid lubricant is incomparable, which overcome some inherent defects of liquid lubrication, as: lubricating grease all easily evaporates, and can not work long hours in high vacuum; Can not in the outer space work of 1000km height, during high loading, oil film is easily damaged, and easily loses the shortcomings such as lubricity, be therefore described as " senior solid oil king " under high temperature.
The production method of molybdenumdisulphide is divided into chemical synthesis, physical purification method (natural method).Chemical synthesis, refers generally to the method for ammonium thiomolybdate or molybdenum oxide, can imurity-removal component to greatest extent, thus obtains the very high molybdenumdisulphide product of purity.But the shortcoming of this kind of technique and products thereof is also clearly, the molybdenumdisulphide that synthesis method obtains is generally amorphousness or 2H+3R type lattice, lubricity can not show a candle to the molybdenumdisulphide of natural lattice (2H type), major impurity in product---free sulphur and molybdic oxide content higher, on its application impact larger.Physical purification method (natural method) refers to produce common molybdenumdisulphide under the condition not destroying natural molybdenumdisulphide lattice, the impurity such as general Chemical Leaching iron, silicon, technical process is comparatively simple, be easy to control, and production cost is lower, it is a kind of common method of producing common molybdenumdisulphide product.
Molybdenumdisulphide is as the additive of lubricating grease, and the impact of its granularity on lubricant effect and range of application is very large, and along with molybdenumdisulphide particle diameter diminishes, specific surface area increases, and its tack and level of coverage on material also significantly improves; Meanwhile, granule number increases severely, and the dispersiveness in grease also obviously increases, and work-ing life is also longer, and also more lubricated material can be protected not frayed, various condition all confirms, the molybdenumdisulphide that particle diameter is little has superior abrasion resistance.
Normally used molybdenumdisulphide particle diameter at 3 ~ 5 μm, to requiring strict lubrication then 1 ~ 2 μm even ultrafine powder of less than 1 μm on request.Such as, add particle diameter in imported car h type engine h molybdenum disulphide grease and should be less than 1 ~ 3 μm; Lubricating oil adds molybdenumdisulphide, easily deposit when granularity is large and easily block oil circuit and purolator, former capital requires to add and is less than 1 μm of even interpolation 0.4 μm and following ultra-fine molybdenumdisulphide, and along with the appearance of new installation, novel process, molybdenumdisulphide ultrafine powder is to nanometer future development.
Ultrafine powder molybdenumdisulphide is on common molybdenumdisulphide basis, obtains molybdenumdisulphide refinement or super-refinement production by the means such as mechanical mill, high energy physics.
Though fine granularity has high lubricant effect, also there is insoluble problem: along with particle size reduction, specific surface area increase, increase with oxygen contact area, oxidation rate improves rapidly in an atmosphere.And already extensively confirmed in friction, when molybdenumdisulphide is oxidized to molybdenum oxide, lubrication lost efficacy.
In actual production, when temperature is too high, or produce D
50during the molybdenumdisulphide of≤0.5 μm, concentrated molybdenum ore once pulverizing, discharging MoO
3namely content exceed standard.
The external general method adopted in molybdenumdisulphide ultrafine powder surface interpolation oxidation inhibitor (one or more organic greases), make organic oil cover molybdenumdisulphide surface, isolated air, solves ultrafine powder problem of oxidation preferably.All there are patent in this respect in climax company of the U.S., Japanese daizo company, collaborative company, CentralGlass company etc., this class methods better solutions is determined ultrafine powder problem of oxidation, but also there are some drawbacks, add oil spout, oiling operation, man-hour extends, after being added with machine oil film, molybdenumdisulphide carbon content raises, and purity declines.
Utility model content
The purpose of this utility model is to provide the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia, and solve in existing ultra-fine molybdenumdisulphide production process, molybdenumdisulphide is oxidizable, loses lubricant effect, and the problem that after increasing oxidation inhibitor, purity declines.
The technical scheme that the utility model adopts is, the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia, comprise pulverizer, pulverizer top is provided with grading machine, feeding hole of pulverizer and closed-type feed system connectivity, pulverizer is connected with nitrogen pressure compression system by pipeline, grading machine by pipeline successively with rotoclone collector, cloth dust collector connects, cloth dust collector venting port is provided with strainer, nitrogen pressure compression system comprises by pipeline to the air compressor machine connected successively, gas-holder, front oil eliminator, freeze drier, rear oil eliminator, Nitrogen plant, storage nitrogen tank and oxygen measuring instrument, oxygen measuring instrument is connected with pulverizer by pipeline, strainer is connected with Nitrogen plant entrance by pipeline.
Feature of the present utility model is also,
The aspect ratio of crusher cavity is 2.3 ~ 3.0.
The interface that grading machine is communicated with rotoclone collector is explosion-proof interface.
The beneficial effects of the utility model are, adopt the molybdenumdisulphide ultrafine powder D that the preparation system of the ultra-fine molybdenumdisulphide of the utility model hypoxemia is produced
50=0.4 ~ 1 μm; Effectively protect in molybdenumdisulphide pulverizing process not oxidized in production, reduce MoO
3content; In addition the utility model preparation system can obtain the ultra-fine molybdenumdisulphide of hypoxemia not increasing new operation, simple and convenient, easy handling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preparation system of the ultra-fine molybdenumdisulphide of the utility model hypoxemia.
In figure, 1. air compressor machine, 2. gas-holder, oil eliminator 3., 4. freeze drier, oil eliminator 5., 6. Nitrogen plant, 7. stores up nitrogen tank, 8. oxygen measuring instrument, 9. closed-type feed system, 10. pulverizer, 11. grading machines, 12. explosion-proof interfaces, 13. rotoclone collectors, 14. cloth dust collectors, 15. strainers.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model provides the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia, comprise pulverizer 10, pulverizer 10 top is provided with grading machine 11, pulverizer 10 opening for feed is communicated with closed-type feed system 9, pulverizer 10 is connected with nitrogen pressure compression system by pipeline, grading machine 11 by pipeline successively with rotoclone collector 13, cloth dust collector 14 connects, cloth dust collector 14 venting port is provided with strainer 15, nitrogen pressure compression system comprises by pipeline to the air compressor machine 1 connected successively, gas-holder 2, front oil eliminator 3, freeze drier 4, rear oil eliminator 5, Nitrogen plant 6, storage nitrogen tank 7 and oxygen measuring instrument 8, oxygen measuring instrument 8 is connected with pulverizer (10) by pipeline, strainer 15 is connected with Nitrogen plant 6 entrance by pipeline.
Wherein the aspect ratio of pulverizer 10 cavity is 2.3 ~ 3.0, and the height of cavity refers to the distance between grading machine to nozzle herein; The interface that grading machine 11 is communicated with rotoclone collector 13 is explosion-proof interface 12.
Being provided with feed bin funnel and feed worm in closed-type feed system 9, making material enter pulverizer 10 by the rotation of screw rod, simultaneously by controlling the rotation of screw rod, controlling the speed of charging.
Adopt the preparation system of the ultra-fine molybdenumdisulphide of above-mentioned hypoxemia to prepare the method for the ultra-fine molybdenumdisulphide of hypoxemia, be specially:
Choose the concentrated molybdenum ore after purifying, Mo >=58.8%, particle diameter 20 ~ 30 μm, concentrated molybdenum ore is placed in the feed bin funnel of closed-type feed system 9.Air in emptying system, the pressurized air of air compressor machine 1, through gas-holder 2, enters Nitrogen plant 6 after oil removing, form supersonic airstream through pulverizer 10 inner nozzle after nitrogen compression and inject crushiing chamber, control a nitrogen content>=95%, the flow velocity that nitrogen enters crushiing chamber is 18m
3~ 20m
3/ min, pulverizer internal gas pressure 0.6 ~ 0.7MPa.Start feed system, by bolt rotary, raw material evenly adds in the crushiing chamber of pulverizer 10 simultaneously, and controlling molybdenumdisulphide load is 40 ~ 50kg/h; Supersonic airstream makes concentrated molybdenum ore be fluidization, and accelerated concentrated molybdenum ore converges at jet-stream wind joint, produces violent collision, friction, shearing and reach the superfine grinding of particle; Material after pulverizing by the gas delivery that rises in grading machine 11, realize the separation of thickness powder, meal returns pulverizer 10 according to the gravity of self to be continued to pulverize, qualified fine powder enters rotoclone collector 13 with air-flow, fine dust is collected by cloth dust collector 14, nitrogen, after filter 15 filters, returns Nitrogen plant 6, continues to recycle.
Adopt the molybdenumdisulphide ultrafine powder D that the preparation system of the ultra-fine molybdenumdisulphide of the utility model hypoxemia is produced
50=0.4 ~ 1 μm; Effectively protect in molybdenumdisulphide pulverizing process not oxidized in production, reduce MoO
3content; In addition the utility model preparation system makes can obtain the ultra-fine molybdenumdisulphide of hypoxemia not increasing new operation, simple and convenient, easy handling.
Contrast MoO in the molybdenumdisulphide ultrafine powder prepared in the molybdenumdisulphide ultrafine powder and general method adopting the utility model preparation system to obtain
3content, result is as following table:
By upper table, MoO in the molybdenumdisulphide ultrafine powder that the utility model preparation system prepares can be found out
3content be starkly lower than product prepared by general method, illustrate in the utility model preparation system available protecting molybdenumdisulphide pulverizing process not oxidized, reduce molybdenum oxide content.
Claims (3)
1. the preparation system of the ultra-fine molybdenumdisulphide of hypoxemia, it is characterized in that, comprise pulverizer (10), described pulverizer (10) top is provided with grading machine (11), pulverizer (10) opening for feed is communicated with closed-type feed system (9), pulverizer (10) is connected with nitrogen pressure compression system by pipeline, grading machine (11) by pipeline successively with rotoclone collector (13), cloth dust collector (14) connects, cloth dust collector (14) venting port is provided with strainer (15), nitrogen pressure compression system comprises by pipeline to the air compressor machine connected successively (1), gas-holder (2), front oil eliminator (3), freeze drier (4), rear oil eliminator (5), Nitrogen plant (6), storage nitrogen tank (7) and oxygen measuring instrument (8), oxygen measuring instrument (8) is connected with pulverizer (10) by pipeline, strainer (15) is connected with Nitrogen plant (6) entrance by pipeline.
2. the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia according to claim 1, is characterized in that, the aspect ratio of described pulverizer (10) cavity is 2.3 ~ 3.0.
3. the preparation system of the ultra-fine molybdenumdisulphide of a kind of hypoxemia according to claim 1, is characterized in that, the interface that described grading machine (11) is communicated with rotoclone collector (13) is explosion-proof interface (12).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536960A (en) * | 2015-11-27 | 2016-05-04 | 金堆城钼业股份有限公司 | Preparation system and preparation method of low-oxygen ultrafine molybdenum disulfide |
| CN106076571A (en) * | 2016-06-21 | 2016-11-09 | 江苏密友粉体新装备制造有限公司 | A kind of deep cooling crush micropowder preparation system |
| CN106277057A (en) * | 2016-08-16 | 2017-01-04 | 攀枝花市九鼎智远知识产权运营有限公司 | The production system of nanoscale molybdenum bisuphide and production method thereof |
-
2015
- 2015-11-27 CN CN201520965085.7U patent/CN205170409U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536960A (en) * | 2015-11-27 | 2016-05-04 | 金堆城钼业股份有限公司 | Preparation system and preparation method of low-oxygen ultrafine molybdenum disulfide |
| CN105536960B (en) * | 2015-11-27 | 2018-09-07 | 金堆城钼业股份有限公司 | A kind of preparation system and preparation method thereof of the ultra-fine molybdenum disulfide of hypoxemia |
| CN106076571A (en) * | 2016-06-21 | 2016-11-09 | 江苏密友粉体新装备制造有限公司 | A kind of deep cooling crush micropowder preparation system |
| CN106277057A (en) * | 2016-08-16 | 2017-01-04 | 攀枝花市九鼎智远知识产权运营有限公司 | The production system of nanoscale molybdenum bisuphide and production method thereof |
| CN106277057B (en) * | 2016-08-16 | 2017-12-08 | 新昌县达科机电产品设计有限公司 | The production system and its production method of nanometer class molybdenum disulfide |
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