CN108311713A - A kind of Automatic Control manufactures the method and its equipment of silver powder - Google Patents
A kind of Automatic Control manufactures the method and its equipment of silver powder Download PDFInfo
- Publication number
- CN108311713A CN108311713A CN201810464846.9A CN201810464846A CN108311713A CN 108311713 A CN108311713 A CN 108311713A CN 201810464846 A CN201810464846 A CN 201810464846A CN 108311713 A CN108311713 A CN 108311713A
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- China
- Prior art keywords
- mixer
- solution
- reactor
- silver powder
- transition bucket
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Classifications
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- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
Abstract
A kind of Automatic Control manufactures the method and its equipment of silver powder, including control device, the first branch includes the first mixer, First Transition mixer and the first pumping, the second branch includes the second mixer, the second transition bucket and the second pumping, further includes reactor, filter, washer, hot-air drying unit；Further include following preparation method：(1) stock, (2) prepare silver nitrate solution and reducing solution, (3) reaction, (4) filtering, (5) cleaning, (6) drying, (7) packing processes.The present invention must also be in addition to Manual material feeding except mixer, remaining can all realize automation mechanized operation, the mainly process of redox reaction, realizes the conditions such as automation control temperature, reaction speed, ensures the stability of product.
Description
Technical field
The present invention is reacted with tradition using the equipment and its manufacturing method of automatic control production technology manufacture silver powder
The equipment that artificial production technology of the kettle production with stirring manufactures silver powder has essential distinction.The silver powder performance manufactured is stablized,
Pattern control is stablized, and single batch output is big, and lot stability is good.
Background technology
The technique of production silver powder is implemented at this stage：Utilize the reduction such as silver nitrate solution and ascorbic acid or formaldehyde
Agent is homogeneously added under stirring in silver nitrate solution to reducing agent in fixed container, thus can be by the silver in silver nitrate
The silver particles for being reduced into certain grain size and shape precipitate, after the reaction was complete, precipitation it is complete it is complete after remove (or topple over or filter)
Liquid is also answered, sediment is filtered out --- then silver powder is cleaned for several times again with deionized water, until the deionized water that silver powder comes out
After electrical conductivity of solution is 100 μ s/cm.The silver powder cleaned up can add absolute ethyl alcohol and dispersant is dispersed with stirring,
Soft-agglomerated silver powder particle is dispersed into the particle that relatively independent nothing is united, places into 50 DEG C of vacuum drying chambers and toasts for 24 hours, it will
The residual of absolute ethyl alcohol and deionized water remove completely it is dry after at clean dry powdery silver particles.Finally the method is produced
Silver powder out is manufactured into the silver paste needed in various electronic products, is widely used in conducting wire.This method is domestic
It is widely used, the reason is that simple for process, equipment investment small scale, production cost and personnel requirement be not high.But its maximum disadvantage
The consistency between batch, i.e., repeated more difficult control.Because difficult hold of mixing speed and chemical reaction condition causes to criticize
Secondary stability is poor, while the batch of primary first-order equation is little, for example uses 3m3Reaction kettle as reaction vessel, the silver powder of manufacture is only
50 kilograms or so, quantity made from primary first-order equation is few, then with same technique go manufacture second batch, as a result often with it is previous
Batch difference, so that using often different on electronic product after silver paste manufacture, electrical property and appearance are in scanning electricity
Microscopic observation otherness is big, and Quality of electronic products is caused to have height, especially accurate solar energy silver powder more to require consistency
Repeatability will be got well.Therefore, we have then invented design to accomplish that silver powder used for solar batteries has higher quality guarantee
A set of completely new equipment and preparation method.
Invention content
The present invention must also be in addition to Manual material feeding except mixer, remaining can all realize that automation mechanized operation, mainly redox are anti-
The process answered realizes the conditions such as automation control temperature, reaction speed, ensures the stability of product.
The present invention controls the component that silver nitrate solution and reducing solution is added by computer；PH value tune is replenished in time in reaction process
The amount of reagent.It removes to accurately control the component of pumping, regulating valve etc. using control device, realizes the silver powder that every batch of processes
Consistency；Simultaneously by the sensor in reactor and the flow monitor in each pipeline, real-time transmission data, it is fixed to realize
The addition and transmission of amount, make reduction reaction process have Intellectualized monitoring so that the consistency for the silver powder that every batch of obtains is good, electricity
It is minimum that performance and appearance observe otherness under scanning electron microscope.
In order to solve the above technical problems, one aspect of the present invention is：
The equipment that a kind of Automatic Control manufactures silver powder, including control device, characterized in that including the first branch and
The second branch；
The first branch includes successively the first mixer and First Transition mixer, between the first mixer and First Transition bucket
Pipeline on the first pumping is installed, the first pumping is by the solution extraction of the first mixer to First Transition bucket；
The second branch includes successively the second mixer and the second transition bucket, the pipe between the second mixer and the second transition bucket
Second pumping is installed, second pumps the solution extraction of the second mixer to the second transition bucket on road；
Further include reactor, the first regulating valve, the second transition are installed on the pipeline between First Transition bucket and reactor
The second regulating valve is installed on pipeline between bucket and reactor；
Further include filter, reactor is connect by first conveyer belt with filter；
Further include washer, filter is connect by the second conveyer belt with washer, and shower water is also associated on washer
Device；
Further include hot-air drying unit, washer is connect by third conveyer belt with hot-air drying unit.
Further include package post, hot-air drying unit is connect by the 4th conveyer belt with package post.
In addition, the invention also includes a kind of methods that Automatic Control manufactures silver powder, which is characterized in that including as follows
Step：
(1) it stocks up：Get out silver nitrate, reducing solution and deionized water；
(2) silver nitrate solution and reducing solution are prepared：The first mixer is added in silver nitrate and deionized water, nitre is obtained by the reaction
Sour silver solution is extracted the silver nitrate solution of the first mixer to First Transition bucket by the first pumping, spare；By reducing agent and
Deionized water is added the second mixer and reducing solution is obtained by the reaction, and is extracted the reducing solution of the second mixer to the by the second pumping
Two transition buckets, it is spare；
(3) it reacts：By the first regulating valve on pipeline by the silver nitrate solution of First Transition bucket according to be delivered to reaction
In device；
By the second regulating valve on pipeline by the reducing solution of the second transition bucket according to being delivered in reactor；
In the reactor, silver nitrate solution and reducing solution are restored；
(4) it filters：It restores to obtain reduzate solution by reactor, reduzate solution is delivered in filter and is filtered
Obtain silver powder；
(5) it cleans：Argent grain is delivered in washer, water spray silver powder surface is utilized；
(6) it dries：By the silver powder after cleaning by hot-air seasoning, silver powder is obtained；
(7) packing processes.
The beneficial effects of the invention are as follows：
The present invention must also be in addition to Manual material feeding except mixer, remaining can all realize automation mechanized operation, mainly in reactor
The process of redox reaction realizes the conditions such as automation control temperature, reaction speed, ensures the stability of product.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Specific embodiment
To facilitate the understanding of the present invention with reference to specific embodiments the present invention will be described in more detail.
Unless otherwise defined, technical and scientific term all used in this specification is led with the technology for belonging to the present invention
The normally understood meaning of technical staff in domain is identical.Used term is only in the description of the invention in this specification
The purpose of description specific embodiment is not intended to the limitation present invention.
As shown in Figure 1, the equipment that a kind of Automatic Control manufactures silver powder, including control device, characterized in that including
The first branch and the second branch；
First branch priority includes the first mixer 1 and First Transition mixer 2, the first mixer 1 and First Transition bucket
First pumping 3 is installed, first pumps 3 by the solution extraction of the first mixer 1 to First Transition bucket 2 on the pipeline between 2；
The second branch includes successively the second mixer 4 and the second transition bucket 5, between the second mixer 4 and the second transition bucket 5
Pipeline on the second pumping 6 is installed, the second pumping 6 is by the solution extraction of the second mixer 4 to the second transition bucket 5；
Further include reactor 7, the first regulating valve 8 is installed on the pipeline between First Transition bucket 2 and reactor 7, second
Second regulating valve 9 is installed on the pipeline between transition bucket 5 and reactor 7；
Further include filter 10, reactor 7 is connect by first conveyer belt 11 with filter 10；
Further include washer 12, filter 10 is connect with washer 12 by the second conveyer belt 13, also connected on washer 12
It is connected to spray water system 14；
Further include hot-air drying unit 15, washer 12 is connect by third conveyer belt 16 with hot-air drying unit 15.
Further include package post 17, hot-air drying unit 15 is connect by the 4th conveyer belt 18 with package post 17.
In addition, the invention also includes a kind of methods that Automatic Control manufactures silver powder, which is characterized in that including as follows
Step：
(1) it stocks up：Get out silver nitrate, reducing solution and deionized water；
(2) silver nitrate solution and reducing solution are prepared：The first mixer 1 is added in silver nitrate and deionized water, nitre is obtained by the reaction
Sour silver solution, is extracted the silver nitrate solution of the first mixer 1 to First Transition bucket 2 by the first pumping 3, spare；It will reduction
Agent and deionized water are added the second mixer 4 and reducing solution are obtained by the reaction, and 6 are pumped by the reducing solution of the second mixer 4 by second
It extracts to the second transition bucket 5, it is spare；
(3) it reacts：It is by the first regulating valve 8 on pipeline that the silver nitrate solution of First Transition bucket 2 is anti-according to being delivered to
It answers in device；
By the second regulating valve 9 on pipeline by the reducing solution of the second transition bucket 5 according to being delivered in reactor 7；
In reactor 7, silver nitrate solution and reducing solution are restored；
(4) it filters：Reduzate solution is obtained by the reduction of reactor 7, reduzate solution is delivered in filter 10
Silver powder is obtained by filtration；
(5) it cleans：Argent grain is delivered in washer 12, using the water spray silver powder surface of spray water system 14,
The solution of silver powder remained on surface cleans up；
(6) it dries：By the silver powder after cleaning by 15 hot-air seasoning of hot-air drying unit, silver powder is obtained；
(7) packing processes：Obtained silver powder carries out packing processes.
It should be noted that giving the preferred embodiment of the present invention in the specification of the present invention, still, the present invention can
By by it is many it is different in the form of realize, however it is not limited to this specification described embodiment, these embodiments are not as right
The additional limitation of the content of present invention, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.Also, above-mentioned each technical characteristic continues to be combined with each other, and forms the various embodiments not being enumerated above, is accordingly to be regarded as this hair
Speak frankly the range that bright secretary carries；Further, for those of ordinary skills, it can be improved according to the above description
Or transformation, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (3)
1. the equipment that a kind of Automatic Control manufactures silver powder, including control device, characterized in that including the first branch and the
Two branches；
The first branch includes successively the first mixer and First Transition mixer, the pipe between the first mixer and First Transition bucket
First pumping is installed, first pumps the solution extraction of the first mixer to First Transition bucket on road；
The second branch is successively including the second mixer and the second transition bucket, on the pipeline between the second mixer and the second transition bucket
Second pumping is installed, second pumps the solution extraction of the second mixer to the second transition bucket；
Further include reactor, the first regulating valve be installed on the pipeline between First Transition bucket and reactor, the second transition bucket with
Second regulating valve is installed on the pipeline between reactor；
Further include filter, reactor is connect by first conveyer belt with filter；
Further include washer, filter is connect by the second conveyer belt with washer, and spray water system is also associated on washer；
Further include hot-air drying unit, washer is connect by third conveyer belt with hot-air drying unit.
2. the equipment that a kind of Automatic Control manufactures silver powder according to claim 1, which is characterized in that further include packaging
Platform, hot-air drying unit are connect by the 4th conveyer belt with package post.
3. a kind of method that Automatic Control manufactures silver powder, which is characterized in that include the following steps：
(1) it stocks up：Get out silver nitrate, reducing solution and deionized water；
(2) silver nitrate solution and reducing solution are prepared：The first mixer is added in silver nitrate and deionized water, silver nitrate is obtained by the reaction
Solution is extracted the silver nitrate solution of the first mixer to First Transition bucket by the first pumping, spare；By reducing agent and go from
Sub- water is added the second mixer and reducing solution is obtained by the reaction, and is extracted the reducing solution of the second mixer to the second mistake by the second pumping
Bucket is crossed, it is spare；
(3) it reacts：The silver nitrate solution of First Transition bucket is delivered in reactor by the first regulating valve on pipeline；
By the second regulating valve on pipeline by the reducing solution of the second transition bucket according to being delivered in reactor；
In the reactor, silver nitrate solution and reducing solution are restored；
(4) it filters：It restores to obtain reduzate solution by reactor, reduzate solution is delivered in filter and is obtained by filtration
Silver powder；
(5) it cleans：Argent grain is delivered in washer, water spray silver powder surface is utilized；
(6) it dries：By the silver powder after cleaning by hot-air seasoning, silver powder is obtained；
(7) packing processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464846.9A CN108311713A (en) | 2018-05-16 | 2018-05-16 | A kind of Automatic Control manufactures the method and its equipment of silver powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464846.9A CN108311713A (en) | 2018-05-16 | 2018-05-16 | A kind of Automatic Control manufactures the method and its equipment of silver powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108311713A true CN108311713A (en) | 2018-07-24 |
Family
ID=62895544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810464846.9A Pending CN108311713A (en) | 2018-05-16 | 2018-05-16 | A kind of Automatic Control manufactures the method and its equipment of silver powder |
Country Status (1)
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| CN (1) | CN108311713A (en) |
Citations (13)
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| JP2014084498A (en) * | 2012-10-23 | 2014-05-12 | Sumitomo Metal Mining Co Ltd | Manufacturing method and manufacturing apparatus of silver powder |
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| CN104209529A (en) * | 2013-05-29 | 2014-12-17 | 中国科学院理化技术研究所 | Method for continuously preparing ultrafine sliver powder on basis of microchannel mixed reaction system |
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Patent Citations (13)
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| CN101804459A (en) * | 2010-04-19 | 2010-08-18 | 南京工业大学 | Method for preparing nanometer nickel powder by micro passage reaction vessel |
| JP2014084498A (en) * | 2012-10-23 | 2014-05-12 | Sumitomo Metal Mining Co Ltd | Manufacturing method and manufacturing apparatus of silver powder |
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| CN104014808A (en) * | 2014-05-29 | 2014-09-03 | 深圳航天科技创新研究院 | Method for preparing monodisperse superfine nickel powder through seeding growth method and micro-reaction system of method |
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