CN104772467A - Spray-type granulation process capable of conveniently controlling oxygen content - Google Patents
Spray-type granulation process capable of conveniently controlling oxygen content Download PDFInfo
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- CN104772467A CN104772467A CN201510110416.3A CN201510110416A CN104772467A CN 104772467 A CN104772467 A CN 104772467A CN 201510110416 A CN201510110416 A CN 201510110416A CN 104772467 A CN104772467 A CN 104772467A
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Abstract
The invention discloses a spray-type granulation process capable of conveniently controlling the oxygen content. The spray-type granulation process is characterized by comprising the following steps: (1) carrying out ball-grinding on a hard alloy mixture; (2) carrying out drying and granulation on the mixture subjected to ball grinding; (3) cooling the product subjected to drying and granulation; (4) carrying out vacuum package on the cooled product, wherein a main tower for drying and granulation in the step (2) is connected with a cooling vibration table for cooling in a completely sealing manner, and the connection part between the main tower and the cooling vibration is table protected by an inert gas for the purpose of preventing a high-temperature material subjected to drying and granulation from directly contacting air. The spray-type granulation process can be used for effectively controlling the oxygen content of the product, reducing the forming difficulty, improving the product quality and prolonging the storage time of the granulated mixture.
Description
Technical field
The present invention relates to a kind of atomizing granulating process being convenient to control oxygen content, belong to carbide alloy processing technique field.
Background technology
current domestic medium-sized Cemented Carbide Enterprises mixture granulation method, most employing be drum polletizing, small part has employing spraying granulation, but it does not effectively control the oxygen content of the compound after having granulated, rear end operation (shaping, sintering) difficulty is caused to strengthen.Particularly for ultra-fine grain, as oxygen content is unstable, very easily there is shaping waste product and sintering waste product.
The method of present situation has following puzzlement: 1, drum polletizing: particle is uneven, and is solid particle, not yielding, causes suppression performance poor; 2, mixture granulation complete after temperature higher, directly contact with air, cause material oxygen content constantly to promote, cause shaping difficulty large, sintering quality instability (constant sintering process of having no idea); 3, drum polletizing: efficiency is lower, a batch of material needs separately to granulate, and causes the bad stability of material by the gross.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of atomizing granulating process being convenient to control oxygen content, can control effectively, lower molding difficulty, improve product quality the oxygen content of product, extends the holding time of good rear compound of granulating.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
Be convenient to the atomizing granulating process controlling oxygen content, it is characterized in that: comprise the steps:
(1) carbide alloy mixture is carried out ball milling;
(2) compound after ball milling is carried out drying and granulating;
(3) product after drying and granulating is cooled;
(4) product after cooling is carried out vacuum packaging;
Wherein, by step (2) for being tightly connected completely between the cooling bumper that cools in the king-tower of drying and granulating and step (3), and junction is by inert gas shielding, stops the high-temperature material that drying and granulating becomes and directly contacts with air.
Aforesaid a kind of being convenient to controls the atomizing granulating process of oxygen content, it is characterized in that: what adopt in described step (2) is the mode of spraying granulation.
Aforesaid a kind of atomizing granulating process being convenient to control oxygen content, is characterized in that: what adopt when cooling in described step (3) is orthoscopic cooling bumper.
Aforesaid a kind of atomizing granulating process being convenient to control oxygen content, is characterized in that: in described step (1), Ball-milling Time is 72 hours-96 hours, ball milling speed 30 r/min-50r/min, cooling water temperature≤35 DEG C.
Aforesaid a kind of atomizing granulating process being convenient to control oxygen content, it is characterized in that: in described step (2), utilize pump to get in spray tower by the material after ball milling, in tower, temperature is between 150 DEG C-200 DEG C, and pressure 800-1000Kpa, instantaneously that material pelletization is dried.
The invention has the beneficial effects as follows: by by temperature of charge good for drying and granulating before 80-100 DEG C; can not directly pack; carry out cooling processing; and the device of closed orthoscopic bumper is devised at discharging opening; in directly can pass into protective gas; cool in seal cavity; achieve the effective control to product oxygen content; and by adopting the mode of spraying granulation; make material uniform particle, shape is subsphaeroidal, the softer easy fragmentation of particle; oxygen content is lower, and suppression performance is good and stable.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
The invention provides a kind of atomizing granulating process being convenient to control oxygen content, it is characterized in that: comprise the steps:
(1) carbide alloy mixture is carried out ball milling; Wherein, Ball-milling Time is 72 hours-96 hours, ball milling speed 30 r/min-50r/min, cooling water temperature≤35 DEG C;
(2) compound after ball milling is carried out drying and granulating; Utilize pump to get in spray tower by the material after ball milling, in tower, temperature is between 150 DEG C-200 DEG C, and pressure 800-1000Kpa, instantaneously that material pelletization is dried; In the present embodiment, adopt the mode of spraying granulation, make material uniform particle, shape is subsphaeroidal, the softer easy fragmentation of particle, and oxygen content is lower, and suppression performance is good and stable.
(3) product after drying and granulating is cooled;
(4) product after cooling is carried out vacuum packaging, wherein, by in step (2) for being tightly connected completely between the cooling bumper that cools in the king-tower of drying and granulating and step (3), and inert gas shielding is passed through in junction, the high-temperature material stopping drying and granulating one-tenth directly contacts with air, because the good temperature of charge of drying and granulating is before 80-100 DEG C, can not directly pack, therefore need to cool, we devise the device of a closed bumper at discharging opening, in directly can pass into protective gas (N2/Ar2), its wall is interlayer, cooling water can be led to cool, material streaks cooling device from discharging opening through vibrations, make temperature of charge≤30 DEG C finally obtained, achieve and the oxygen content of product is control effectively, lower molding difficulty, improve product quality, extend the holding time of good rear compound of granulating.
What adopt when cooling in described step (3) is orthoscopic cooling bumper, can seal, and it can protect material by filling with inert gas, and this inert gas can be nitrogen, to control the increase of oxygen content; Good cooling results, material particle shape is kept intact, and easily clears up.
In sum, the invention provides a kind of atomizing granulating process being convenient to control oxygen content, can control effectively to the oxygen content of product, lower molding difficulty, improve product quality, extend the holding time of good rear compound of granulating.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is by appending claims and equivalent circle thereof.
Claims (5)
1. be convenient to the atomizing granulating process controlling oxygen content, it is characterized in that: comprise the steps:
(1) carbide alloy mixture is carried out ball milling;
(2) compound after ball milling is carried out drying and granulating;
(3) product after drying and granulating is cooled;
(4) product after cooling is carried out vacuum packaging;
Wherein, by step (2) for being tightly connected completely between the cooling bumper that cools in the king-tower of drying and granulating and step (3), and junction is by inert gas shielding, stops the high-temperature material that drying and granulating becomes and directly contacts with air.
2. a kind of being convenient to according to claim 1 controls the atomizing granulating process of oxygen content, it is characterized in that: what adopt in described step (2) is the mode of spraying granulation.
3. a kind of atomizing granulating process being convenient to control oxygen content according to claim 2, is characterized in that: what adopt when cooling in described step (3) is orthoscopic cooling bumper.
4. a kind of atomizing granulating process being convenient to control oxygen content according to claim 3, is characterized in that: in described step (1), Ball-milling Time is 72 hours-96 hours, ball milling speed 30 r/min-50r/min, cooling water temperature≤35 DEG C.
5. a kind of atomizing granulating process being convenient to control oxygen content according to claim 4, it is characterized in that: in described step (2), utilize pump to get in spray tower by the material after ball milling, in tower, temperature is between 150 DEG C-200 DEG C, and pressure 800-1000Kpa, instantaneously that material pelletization is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510110416.3A CN104772467A (en) | 2015-03-13 | 2015-03-13 | Spray-type granulation process capable of conveniently controlling oxygen content |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510110416.3A CN104772467A (en) | 2015-03-13 | 2015-03-13 | Spray-type granulation process capable of conveniently controlling oxygen content |
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| CN104772467A true CN104772467A (en) | 2015-07-15 |
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| CN201510110416.3A Pending CN104772467A (en) | 2015-03-13 | 2015-03-13 | Spray-type granulation process capable of conveniently controlling oxygen content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583403A (en) * | 2016-01-21 | 2016-05-18 | 中核(天津)科技发展有限公司 | Pelletizing method for copper-nickel alloy powder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263204A (en) * | 1988-02-29 | 1989-10-19 | Gte Prod Corp | Low oxygen content fine globular particles and production thereof by fluid energy milling and high temperature treatment |
| CN101239388A (en) * | 2008-01-17 | 2008-08-13 | 宋爽 | Non-magnetic cemented carbide powder composed of nickel-tungsten and nickel-chromium binder phase and preparation |
| CN101514405A (en) * | 2009-03-09 | 2009-08-26 | 江西稀有稀土金属钨业集团有限公司 | Preparation method for cemented carbide mixture |
| CN101525699A (en) * | 2009-04-17 | 2009-09-09 | 戴煜 | Method for manufacturing hard alloy or tungsten-molybdenum mixture by taking water as medium |
| CN103055760A (en) * | 2012-12-24 | 2013-04-24 | 苏州奥然日用品有限公司 | Spray granulation device |
| CN103464051A (en) * | 2013-09-25 | 2013-12-25 | 南京威安新材料科技有限公司 | Spray granulation equipment used for catalyst assisted forming |
| CN203413943U (en) * | 2013-07-25 | 2014-01-29 | 无锡市群征干燥设备有限公司 | Linear powder cooling and vibrating table |
-
2015
- 2015-03-13 CN CN201510110416.3A patent/CN104772467A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263204A (en) * | 1988-02-29 | 1989-10-19 | Gte Prod Corp | Low oxygen content fine globular particles and production thereof by fluid energy milling and high temperature treatment |
| CN101239388A (en) * | 2008-01-17 | 2008-08-13 | 宋爽 | Non-magnetic cemented carbide powder composed of nickel-tungsten and nickel-chromium binder phase and preparation |
| CN101514405A (en) * | 2009-03-09 | 2009-08-26 | 江西稀有稀土金属钨业集团有限公司 | Preparation method for cemented carbide mixture |
| CN101525699A (en) * | 2009-04-17 | 2009-09-09 | 戴煜 | Method for manufacturing hard alloy or tungsten-molybdenum mixture by taking water as medium |
| CN103055760A (en) * | 2012-12-24 | 2013-04-24 | 苏州奥然日用品有限公司 | Spray granulation device |
| CN203413943U (en) * | 2013-07-25 | 2014-01-29 | 无锡市群征干燥设备有限公司 | Linear powder cooling and vibrating table |
| CN103464051A (en) * | 2013-09-25 | 2013-12-25 | 南京威安新材料科技有限公司 | Spray granulation equipment used for catalyst assisted forming |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583403A (en) * | 2016-01-21 | 2016-05-18 | 中核(天津)科技发展有限公司 | Pelletizing method for copper-nickel alloy powder |
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Application publication date: 20150715 |
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