CN106082347A - The preparation method of manganese dioxide - Google Patents
The preparation method of manganese dioxide Download PDFInfo
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- CN106082347A CN106082347A CN201610449627.4A CN201610449627A CN106082347A CN 106082347 A CN106082347 A CN 106082347A CN 201610449627 A CN201610449627 A CN 201610449627A CN 106082347 A CN106082347 A CN 106082347A
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- CN
- China
- Prior art keywords
- manganese
- manganese dioxide
- nitric acid
- preparation
- crude product
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/02—Oxides; Hydroxides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses the preparation method of a kind of manganese dioxide, comprise the steps: 1) by natural manganese ore concentrated nitric acid submergence, filter after utilizing concentrated nitric acid remove impurity and can obtain manganese nitrate solution；2) step 1) gained manganese nitrate solution is carried out concentration；3) to step 2) products therefrom carries out microwave heating, and make manganese nitrate decompose and obtain manganese dioxide crude product；Reactor off-gas water or dust technology process, and the nitric acid of generation reclaims and is repeatedly circulated；4) manganese dioxide crude product obtains manganese dioxide finished product after refined.The present invention can prepare high electroactive manganese dioxide.
Description
Technical field
The present invention relates to the preparation method of manganese dioxide.
Background technology
Nowadays chemical industry in China prepares the main method of chemical manganese bioxide is manganese carbonate thermal decomposition method and manganese sulfate oxygen
Change method.Wherein manganese carbonate thermal decomposition method is wide because of its raw material sources, easily looks for and cost is relatively low, and technique is simple and is extensively selected
With, but product quality has much room for improvement.Manganese sulfate oxidizing process product quality is high, its chemical products be widely used in electronic applications,
Chemical production field or be used as to produce high-purity catalyst etc..But the manganese of manganese sulfate oxidizing process consumes big, cost height.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of manganese dioxide, it can prepare high electroactive titanium dioxide
Manganese.
For achieving the above object, the technical scheme is that the preparation method designing a kind of manganese dioxide, including as follows
Step:
1) natural manganese ore is used concentrated nitric acid submergence, filter after utilizing concentrated nitric acid remove impurity and can obtain manganese nitrate solution；
2) step 1) gained manganese nitrate solution is carried out concentration；
3) to step 2) products therefrom carries out microwave heating, and make manganese nitrate decompose and obtain manganese dioxide crude product；Reactor off-gas water
Or dust technology processes, the nitric acid of generation reclaims and is repeatedly circulated；
4) manganese dioxide crude product obtains manganese dioxide finished product after refined.
Preferably, the microwave frequency of described microwave heating is 22.7GHz, and microwave power is 1.4KW, and reaction temperature is 80
DEG C, the response time is 40～50min.
Advantages of the present invention and having the beneficial effects that: provide the preparation method of a kind of manganese dioxide, it can prepare high electricity
The manganese dioxide of activity.
Detailed description of the invention
Below in conjunction with embodiment, the detailed description of the invention of the present invention is further described.Following example are only used for more
Add and clearly demonstrate technical scheme, and can not limit the scope of the invention with this.
The technical scheme that the present invention is embodied as is:
The preparation method of a kind of manganese dioxide, comprises the steps:
1) natural manganese ore is used concentrated nitric acid submergence, filter after utilizing concentrated nitric acid remove impurity and can obtain manganese nitrate solution；
2) step 1) gained manganese nitrate solution is carried out concentration；
3) to step 2) products therefrom carries out microwave heating, and make manganese nitrate decompose and obtain manganese dioxide crude product；Reactor off-gas water
Or dust technology processes, the nitric acid of generation reclaims and is repeatedly circulated；
4) manganese dioxide crude product obtains manganese dioxide finished product after refined.
The microwave frequency of described microwave heating is 22.7GHz, and microwave power is 1.4KW, and reaction temperature is 80 DEG C, during reaction
Between be 40～50min.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvements and modifications, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (2)
1. the preparation method of manganese dioxide, it is characterised in that comprise the steps:
1) natural manganese ore is used concentrated nitric acid submergence, filter after utilizing concentrated nitric acid remove impurity and can obtain manganese nitrate solution；
2) step 1) gained manganese nitrate solution is carried out concentration；
3) to step 2) products therefrom carries out microwave heating, and make manganese nitrate decompose and obtain manganese dioxide crude product；Reactor off-gas water
Or dust technology processes, the nitric acid of generation reclaims and is repeatedly circulated；
4) manganese dioxide crude product obtains manganese dioxide finished product after refined.
The preparation method of manganese dioxide the most according to claim 1, it is characterised in that the microwave frequency of described microwave heating
For 22.7GHz, microwave power is 1.4KW, and reaction temperature is 80 DEG C, and the response time is 40～50min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610449627.4A CN106082347A (en) | 2016-06-21 | 2016-06-21 | The preparation method of manganese dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610449627.4A CN106082347A (en) | 2016-06-21 | 2016-06-21 | The preparation method of manganese dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106082347A true CN106082347A (en) | 2016-11-09 |
Family
ID=57237309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610449627.4A Pending CN106082347A (en) | 2016-06-21 | 2016-06-21 | The preparation method of manganese dioxide |
Country Status (1)
| Country | Link |
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| CN (1) | CN106082347A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107349928A (en) * | 2017-08-29 | 2017-11-17 | 江苏师范大学 | A kind of SiO2The preparation method of@CeMnO composite photo-catalysts |
| CN116605910A (en) * | 2023-04-25 | 2023-08-18 | 湖南青冲新材料股份有限公司 | Preparation method of high-purity manganese dioxide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164017A (en) * | 1980-05-23 | 1981-12-16 | Fuji Elelctrochem Co Ltd | Preparation of manganese dioxide |
| CN1370744A (en) * | 2002-03-29 | 2002-09-25 | 武汉大学 | Prepn of active manganese dioxide |
| CN102502853A (en) * | 2011-12-18 | 2012-06-20 | 中国科学院电工研究所 | Method for preparing nanometer manganese dioxide by microwave reflux method |
-
2016
- 2016-06-21 CN CN201610449627.4A patent/CN106082347A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164017A (en) * | 1980-05-23 | 1981-12-16 | Fuji Elelctrochem Co Ltd | Preparation of manganese dioxide |
| CN1370744A (en) * | 2002-03-29 | 2002-09-25 | 武汉大学 | Prepn of active manganese dioxide |
| CN102502853A (en) * | 2011-12-18 | 2012-06-20 | 中国科学院电工研究所 | Method for preparing nanometer manganese dioxide by microwave reflux method |
Non-Patent Citations (1)
| Title |
|---|
| 付春明等: "化学二氧化锰的研究进展", 《化学科技市场》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107349928A (en) * | 2017-08-29 | 2017-11-17 | 江苏师范大学 | A kind of SiO2The preparation method of@CeMnO composite photo-catalysts |
| CN116605910A (en) * | 2023-04-25 | 2023-08-18 | 湖南青冲新材料股份有限公司 | Preparation method of high-purity manganese dioxide |
| CN116605910B (en) * | 2023-04-25 | 2024-03-15 | 湖南青冲新材料股份有限公司 | Preparation method of high-purity manganese dioxide |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |