CN105728737B - A kind of preparation method of anti-oxidation lead powder - Google Patents
A kind of preparation method of anti-oxidation lead powder Download PDFInfo
- Publication number
- CN105728737B CN105728737B CN201610308034.6A CN201610308034A CN105728737B CN 105728737 B CN105728737 B CN 105728737B CN 201610308034 A CN201610308034 A CN 201610308034A CN 105728737 B CN105728737 B CN 105728737B
- Authority
- CN
- China
- Prior art keywords
- metal
- atomization
- additive
- lead powder
- pressure
- Prior art date
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0848—Melting process before atomisation
Landscapes
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
A kind of preparation method of anti-oxidation lead powder, including metal molten, atomization and etc., the temperature of metal molten process molten lead liquid is controlled at about 425~440 DEG C, benzotriazole additive is added in the atomization process, its addition accounts for 0.001%~0.005% of the metallic lead liquid weight after fusing, and the pressure-air throughput that atomization process is passed through is controlled in about 5~6.5m3/min.The present invention during producing metal lead powder in atomization by selecting a kind of additive; utilize the property of additive itself; the favorable environment of interaction and the atomization of additive and metal so that additive gasification forms one layer of protective layer that prevents from aoxidizing and lump on metal lead powder surface；The lead powder product produced using the method for the present invention, 0.5%~3.5% can be effectively controlled using conventional packaging metal lead powder product oxidation deterioration rate, be effectively reduced using conventional packaging production cost, production system safety it is good, return of goods rate is considerably reduced, remarkable in economical benefits.
Description
The present patent application is the patent of invention for November 28 2011 applying date, application number 201110385504.6
Divisional application.
Technical field
The present invention relates to a kind of methods that the preparation method of lead powder more particularly to atomization prepare lead powder.
Background technology
The metal lead powder exposure of atomization production at present is oxidizable rotten in air, therefore using vacuum packaging, but
The product produced under existing production technology situation, has the following problems：1st, vacuum packaging is susceptible to various gas leakage situations,
Cause the oxidation of powder；2nd, it is vacuum-packed since external and internal pressure is poor, lead powder end and tin powder are easy to lump；3rd, it aoxidizes and lumps
Powder re-work and increase a large amount of cost, while the volatilization of powder and fly upward, cause metal loss, volatilizing and flying upward is also easy to
Cause heavy metal poisoning.
Invention content
The purpose of the present invention is to provide a kind of preparation method of anti-oxidation lead powder, metal lead powder antioxygen made from this method
The problem of changing excellent performance, be appropriate for conventional packaging, while avoiding vacuum packaging caking.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of preparation method of anti-oxidation lead powder, including metal molten, atomization and etc., it is characterised in that：Metal molten
The temperature of process molten lead liquid is controlled at 425~440 DEG C, and benzotriazole additive is added in the atomization process, is added
Enter the 0.001%~0.005% of the metallic lead liquid weight that amount is accounted for after fusing, the pressure-air throughput control that atomization process is passed through
In 5~6.5m3/min.0.1~4mm grades of metal lead powder is made in this method, is applied to anti-nuclear radiation in nuclear engineering field
In high density rubber slab.
Above-mentioned benzotriazole additive, molecular formula：C6H5N3, appearance are white, micro- yellow or blush acicular crystal,
Molecular weight 119.0, boiling point：204 DEG C (pressure 2KPa), fusing point：100 DEG C, be commercial product.
Inventor uses the R＆D process of 0.1~4mm grade metal lead powder of the atomization production application in nuclear engineering field
In, multiple additives has been selected to prevent the oxidation of metal powder product, otherwise but the conventional packet of metal powder product obtained use
The product aoxidized after dress is at least up to more than 45%, can not promote, product antioxidant effect is undesirable that industrial production is not achieved
Requirement；There is safety issue, the bad control of entire production process.Inventor has done a large amount of experimental study, finally
It has selected benzotriazole additive and has been added in atomization process, while the addition of benzotriazole is also worthy of careful study very much, controlled
The amount ranges made in the present invention cause the safety of production process good while the oxidation resistance of final metal powder product
Good, ultimogenitary metal powder product is packed using conventional, and oxidation deterioration rate is only 3~3.5% or so.
In order to further improve the oxidation resistance of metal lead powder product obtained, above-mentioned benzotriazole additive adds
Enter that temperature is 210-283 DEG C, pressure is 0.8~0.95 standard atmospheric pressure；It may be such that the metal powder product of production using normal
Rule packaging, oxidation deterioration rate is only 2.3~2.8% or so.
It is highly preferred that in order to further improve the security can and metal lead powder product oxidation resistance, above-mentioned benzo three
The addition temperature of nitrogen azoles additive is 250~275 DEG C, be passed through in metal liquid stream atomization process the pressure of pressure-air for 0.3~
0.5Mpa, the temperature of metal molten process molten lead liquid are controlled at 430~436 DEG C；The metal powder product of production is using conventional
Packaging, oxidation deterioration rate is only 1.2~2.0% or so.
Specifically, a kind of preparation method of anti-oxidation lead powder, including metal molten, atomization, it is characterised in that：
In the atomization process add in benzotriazole additive, addition account for fusing after molten metal weight 0.002%~
0.004%, the addition temperature of the benzotriazole additive is 250~275 DEG C, pressure is 0.8~0.95 normal atmosphere
It presses, the pressure that pressure-air is passed through in metal liquid stream atomization process is 0.3~0.5Mpa, high pressure gas flow is 5~6.5m3/
Min, the temperature of metal molten process molten lead liquid are controlled at 430~436 DEG C；Security of system is good, easy in entire production process
In control, while the metal powder product produced need to only use conventional packaging, and oxidation deterioration rate is only 0.5~1.0% or so.
The present invention has following advantageous effect：
The present invention utilizes the property of additive itself by selecting a kind of additive during producing metal lead powder in atomization
The favorable environment of interaction and the atomization of matter, additive and metallic lead so that additive gasification forms one on lead powder surface
The protective layer that layer is prevented from aoxidizing and be lumpd；By production practices, the 0.1~4mm grade metal lead powders produced using the method for the present invention
The high density rubber slab that nuclear engineering field makes anti-nuclear radiation is mainly used in, using conventional packaging, because oxidation and caking are sent out
The raw return of goods reduce more than 98%, and metal lead powder product oxidation deterioration rate can be effectively controlled 0.5%~3.5%, using normal
Rule packaging production cost is effectively reduced, production system safety is good, and return of goods rate is considerably reduced, and economic benefit is shown
It writes, while the working environment of employee is improved, physical and mental health is guaranteed.
Specific embodiment
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is only used
It is further described in the present invention, it is impossible to be interpreted as limiting the scope of the invention, the people that is skilled in technique in the field
Member can make the present invention according to the invention described above content some nonessential modifications and adaptations.
Embodiment 1
A kind of preparation method of anti-oxidation lead powder, carries out in the steps below：
A. dissolving obtains metallic lead liquid stream in metal molten stove, and the temperature of molten lead liquid is controlled at 430~436 DEG C；
B. the metallic lead liquid stream diameter added in atomization process is in 5~5.5mm；It is 0.3~0.5Mpa by pressure, throughput
For 6~6.5m3The pressure-air of/min, which is passed through in atomization plant, is atomized metallic lead liquid stream, while is passed through benzotriazole addition
Agent, the benzotriazole additive addition account for 0.002%~0.004% into the metal liquid stream weight of atomization plant,
The addition temperature of the benzotriazole additive is 264~275 DEG C, pressure is 0.8~0.95 standard atmospheric pressure；
C. it is cooled to room temperature collection powder；
D. it sieves, is spare or for sale through being routinely packaged into bag.
Safety is good in above method production process；0.1~4mm grades of metal lead powder oxidation deterioration rate obtained is only 0.5
~1.0%, it there's almost no the return of goods post sales, conventional to pack, remarkable in economical benefits.
Embodiment 2~6：According to the following steps and technique productions metal powder, remaining is the same as embodiment 1.
0.1~4mm made from the above method grades of metal lead powder oxidation deterioration rate is only 1.2~3%, conventional to pack, economical
Remarkable benefit；Safety is good in preparation process.
Claims (1)
1. a kind of preparation method of anti-oxidation lead powder, carries out in the steps below：
（1）, in metal molten stove dissolving obtain metallic lead liquid stream, the temperature of molten lead liquid is controlled at 430~436 DEG C；
（2）, the metallic lead liquid stream diameter that adds in atomization process is in 5~5 .5mm；It is the .5Mpa of 0 .3~0, air-flow by pressure
It measures to be passed through in atomization plant for the pressure-air of 6~6 .5m3/min and be atomized metallic lead liquid stream, while be passed through benzotriazole
Additive, the benzotriazole additive addition account for 0 .002%~0 into the metal liquid stream weight of atomization plant
.004%, the addition temperature of the benzotriazole additive is 264~275 DEG C, pressure is the normal atmosphere of 0 .8~0 .95
Pressure；
（3）, be cooled to room temperature collection powder；
（4）, screening, to be packaged into bag spare or for sale through conventional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308034.6A CN105728737B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation lead powder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385504.6A CN103128297B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal lead powder |
| CN201610308034.6A CN105728737B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation lead powder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385504.6A Division CN103128297B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal lead powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105728737A CN105728737A (en) | 2016-07-06 |
| CN105728737B true CN105728737B (en) | 2018-06-29 |
Family
ID=56288943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610308034.6A Active CN105728737B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation lead powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105728737B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07113106A (en) * | 1993-10-12 | 1995-05-02 | Daido Kagaku Kogyo Kk | Method for preventing oxidation of nonferrous metallic powder in production of nonferrous metallic powder |
| CN101139716A (en) * | 2007-10-25 | 2008-03-12 | 金川集团有限公司 | Method for preventing oxidization of copper powder |
| CN101362206B (en) * | 2008-10-09 | 2011-03-23 | 陈新国 | Preparation method of continuous high quality soldering powder |
| CN101695755A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing alloy powder for metal injection moulding through atomization |
| CN101972854A (en) * | 2010-11-09 | 2011-02-16 | 铜陵铜基粉体科技有限公司 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
-
2011
- 2011-11-28 CN CN201610308034.6A patent/CN105728737B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105728737A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PH12014502127A1 (en) | A novel brazing concept | |
| CN104070173B (en) | The preparation method of globular tungsten powder | |
| CN103128298B (en) | A kind of production method of metal dust | |
| CN108079996A (en) | A kind of artificial diamond's powder catalyst and its manufacture craft and application process | |
| CN105728737B (en) | A kind of preparation method of anti-oxidation lead powder | |
| CN103128297B (en) | A kind of production method of metal lead powder | |
| CN105855557B (en) | A kind of metallic tin powder production method for friction material | |
| CN105728736B (en) | A kind of preparation method of anti-oxidation glass putty | |
| CN106270538B (en) | Preparation method of ultrafine-grained iron-based alloy powder | |
| CN105689729B (en) | A kind of atomization production method of high-quality glass putty | |
| CN107470643A (en) | 3D printing superfine spherical Titanium Powder preparation facilities | |
| CN104141086B (en) | A kind of alloy being suitable for melting and casting method production aluminium silicon electronic packing material | |
| CN103128299B (en) | A kind of production method of the metallic tin powder being applicable to diamond tool | |
| CN103128295A (en) | Production method of metal lead powder applied in nuclear engineering field | |
| CN103819495A (en) | Preparation method of betamethasone intermediate | |
| CN1614060A (en) | Preparation method of heat-resistant aluminum alloy | |
| CN101596599A (en) | A kind of mixture taking water as grinding medium new preparation process | |
| CN102113661A (en) | Method for recovering pungency substances in chilli powder crushing process | |
| CN102259174B (en) | Coverage lubricant for vertical type semi-continuous casting of brass and preparation method thereof | |
| CN101318221A (en) | Method for directly manufacturing heavy pressure blank strength tungsten powder with ammonium metatungstate | |
| CN104674031A (en) | Novel method for adding industrial silicon in aluminum alloy smelting process | |
| CN102633000A (en) | Flavoring split charging technique | |
| WO2015165278A1 (en) | Semi-chemical semi-mechanical sealed ultra-low oxygen content atomizing device | |
| CN108067627A (en) | A kind of production technology of fine spherical aluminum powder | |
| CN105834424B (en) | A kind of method of microwave sintering manganeisen powder agglomeration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |