CN106276907A - A kind of processing method of lightning protection device carbide fine powder - Google Patents
A kind of processing method of lightning protection device carbide fine powder Download PDFInfo
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- CN106276907A CN106276907A CN201610704069.1A CN201610704069A CN106276907A CN 106276907 A CN106276907 A CN 106276907A CN 201610704069 A CN201610704069 A CN 201610704069A CN 106276907 A CN106276907 A CN 106276907A
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- carborundum
- protection device
- lightning protection
- screening
- raw material
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Abstract
The invention discloses the processing method of a kind of lightning protection device carbide fine powder, it processes step and is: sic raw material jaw crusher is carried out primary breakup by (1), then puts into and carry out second-time breakage in impact crusher；(2) after carborundum rinses with clear water, dry and be placed in screening machine screening out impurity, then put into screening in magnetic separator；(3) tempering into mixing slurry, after adding concentrated sulphuric acid stirring, add sodium hydroxide, stir while adding, after being eventually adding decarbonizer mix and blend, classified sedimentation leaches carborundum and rinses with clear water；(4) carborundum handled well in step (3) is inserted high-temperature baking in heating furnace, toast rear venting natural cooling, then carry out air-flow flotation classification；The invention has the beneficial effects as follows: have employed multiple tracks remove impurity process for refining, the silicon carbide powder purity processed out is high, fine size, can effectively reduce technological temperature when subsequent production lightning protection device valve block, and improve the mass of the valve plate.
Description
Technical field
The present invention relates to carbofrax material processing technology field, the process side of a kind of lightning protection device carbide fine powder
Method.
Background technology
Carborundum is to be formed by resistance furnace pyrolytic semlting with raw materials such as quartz sand, petroleum coke, wood flours, and carborundum is the most certainly
So there is also rare mineral.Carborundum can apply to multiple field, is the material of a kind of high demand.It the most extensively should
For appliance field, critical effect can be played as the valve block in lightning protection device.
And when using carborundum to make valve block, needing hot conditions, its temperature requirements has the highest for equipment and technique
Requirement；Wanting to reduce technological temperature when it is prepared, the fineness of silicon carbide powder and purity are key factors.
Summary of the invention
The invention aims to provide the processing method of a kind of lightning protection device carbide fine powder.
For achieving the above object, the invention discloses the processing method of a kind of lightning protection device carbide fine powder, it processes step
Suddenly it is:
(1) sic raw material jaw crusher is carried out primary breakup, then the raw material of primary breakup is put into impact crusher
In carry out second-time breakage, it is desirable to the raw material after Po Sui reaches 5-10mm；
(2), after the carborundum clear water crushed being rinsed 3-5 time, dry and be placed in screening machine screening out impurity, then put into
Magnetic separator screens 2-4 time；
(3) carborundum after screening is tempered into the mixing slurry that concentration is 25-35%, add the 20-of mixing slurry quality
25% concentration is the concentrated sulphuric acid of 98% after stirring 20-30 minute, adds sodium hydroxide, stirs while adding until slurry PH reaches
To 6.8-7.1, being eventually adding decarbonizer mix and blend after 10-15 minute, classified sedimentation leaches carborundum and rinses with clear water
3-5 time；
(4) carborundum handled well in step (3) being inserted high-temperature baking in heating furnace, baking temperature is set as 750-800 DEG C,
Toast 50-60 minute rear venting natural cooling, then the carborundum after cooling is carried out air-flow flotation classification.
Wherein, described decarbonizer is kerosene.
Advantages of the present invention and good effect be:
The inventive method have employed multiple tracks remove impurity process for refining, and the silicon carbide powder purity processed out is high, fine size, in follow-up life
Can effectively reduce technological temperature when producing lightning protection device valve block, and improve the mass of the valve plate.
Detailed description of the invention
Specific embodiment one:
A kind of processing method of lightning protection device carbide fine powder, its process step is:
(1) sic raw material jaw crusher is carried out primary breakup, then the raw material of primary breakup is put into impact crusher
In carry out second-time breakage, it is desirable to the raw material after Po Sui reaches 5-10mm；
(2), after the carborundum clear water crushed being rinsed 3 times, dry and be placed in screening machine screening out impurity, then put into magnetic
Select in machine and screen 2 times；
(3) carborundum after screening is tempered into the mixing slurry that concentration is 25%, add 20% concentration of mixing slurry quality
It is the concentrated sulphuric acid of 98% after stirring 20 minutes, adds sodium hydroxide, stir while adding until slurry PH reaches 6.8-7.1,
After being eventually adding decarbonizer mix and blend 10 minutes, classified sedimentation leaches carborundum and rinses 3 times with clear water；
(4) carborundum handled well in step (3) being inserted high-temperature baking in heating furnace, baking temperature is set as 750 DEG C, baking
50 minutes rear venting natural coolings, then the carborundum after cooling is carried out air-flow flotation classification.
Specific embodiment two:
A kind of processing method of lightning protection device carbide fine powder, its process step is:
(1) sic raw material jaw crusher is carried out primary breakup, then the raw material of primary breakup is put into impact crusher
In carry out second-time breakage, it is desirable to the raw material after Po Sui reaches 5-10mm；
(2), after the carborundum clear water crushed being rinsed 5 times, dry and be placed in screening machine screening out impurity, then put into magnetic
Select in machine and screen 4 times；
(3) carborundum after screening is tempered into the mixing slurry that concentration is 35%, add 25% concentration of mixing slurry quality
It is the concentrated sulphuric acid of 98% after stirring 30 minutes, adds sodium hydroxide, stir while adding until slurry PH reaches 6.8-7.1,
After being eventually adding decarbonizer mix and blend 15 minutes, classified sedimentation leaches carborundum and rinses 5 times with clear water；
(4) carborundum handled well in step (3) being inserted high-temperature baking in heating furnace, baking temperature is set as 800 DEG C, baking
60 minutes rear venting natural coolings, then the carborundum after cooling is carried out air-flow flotation classification.
Specific embodiment three:
A kind of processing method of lightning protection device carbide fine powder, its process step is:
(1) sic raw material jaw crusher is carried out primary breakup, then the raw material of primary breakup is put into impact crusher
In carry out second-time breakage, it is desirable to the raw material after Po Sui reaches 5-10mm；
(2), after the carborundum clear water crushed being rinsed 4 times, dry and be placed in screening machine screening out impurity, then put into magnetic
Select in machine and screen 3 times；
(3) carborundum after screening is tempered into the mixing slurry that concentration is 30%, add 22% concentration of mixing slurry quality
It is the concentrated sulphuric acid of 98% after stirring 25 minutes, adds sodium hydroxide, stir while adding until slurry PH reaches 6.8-7.1,
After being eventually adding decarbonizer mix and blend 13 minutes, classified sedimentation leaches carborundum and rinses 4 times with clear water；
(4) carborundum handled well in step (3) being inserted high-temperature baking in heating furnace, baking temperature is set as 780 DEG C, baking
55 minutes rear venting natural coolings, then the carborundum after cooling is carried out air-flow flotation classification.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (2)
1. the processing method of a lightning protection device carbide fine powder, it is characterised in that its process step is:
(1) sic raw material jaw crusher is carried out primary breakup, then the raw material of primary breakup is put into impact crusher
In carry out second-time breakage, it is desirable to the raw material granularity after Po Sui reaches 5-10mm；
(2), after the carborundum clear water crushed being rinsed 3-5 time, dry and be placed in screening machine screening out impurity, then put into
Magnetic separator screens 2-4 time；
(3) carborundum after screening is tempered into the mixing slurry that concentration is 25-35%, add the 20-of mixing slurry quality
25% concentration is the concentrated sulphuric acid of 98% after stirring 20-30 minute, adds sodium hydroxide, stirs while adding until slurry PH reaches
To 6.8-7.1, being eventually adding decarbonizer mix and blend after 10-15 minute, classified sedimentation leaches carborundum and rinses with clear water
3-5 time；
(4) carborundum handled well in step (3) being inserted high-temperature baking in heating furnace, baking temperature is set as 750-800 DEG C,
Toast 50-60 minute rear venting natural cooling, then the carborundum after cooling is carried out air-flow flotation classification.
The processing method of a kind of lightning protection device carbide fine powder the most according to claim 1, it is characterised in that: described de-carbon
Agent is kerosene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704069.1A CN106276907A (en) | 2016-08-23 | 2016-08-23 | A kind of processing method of lightning protection device carbide fine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704069.1A CN106276907A (en) | 2016-08-23 | 2016-08-23 | A kind of processing method of lightning protection device carbide fine powder |
Publications (1)
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| CN106276907A true CN106276907A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610704069.1A Pending CN106276907A (en) | 2016-08-23 | 2016-08-23 | A kind of processing method of lightning protection device carbide fine powder |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804982A (en) * | 2010-04-15 | 2010-08-18 | 连云港东渡碳化硅有限公司 | Purification method of silicon carbide superfine micropowder |
| CN103950931A (en) * | 2014-05-16 | 2014-07-30 | 宝丰恒瑞新材料有限公司 | Treating process of silicon carbide micropowder |
| CN103964439A (en) * | 2014-04-25 | 2014-08-06 | 北方工业大学 | Surface purification treatment method for abrasive grade SiC particles |
-
2016
- 2016-08-23 CN CN201610704069.1A patent/CN106276907A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804982A (en) * | 2010-04-15 | 2010-08-18 | 连云港东渡碳化硅有限公司 | Purification method of silicon carbide superfine micropowder |
| CN103964439A (en) * | 2014-04-25 | 2014-08-06 | 北方工业大学 | Surface purification treatment method for abrasive grade SiC particles |
| CN103950931A (en) * | 2014-05-16 | 2014-07-30 | 宝丰恒瑞新材料有限公司 | Treating process of silicon carbide micropowder |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
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| WD01 | Invention patent application deemed withdrawn after publication |