CN106915745A - A kind of production technology of silicon carbide micro-powder - Google Patents
A kind of production technology of silicon carbide micro-powder Download PDFInfo
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- CN106915745A CN106915745A CN201710331501.1A CN201710331501A CN106915745A CN 106915745 A CN106915745 A CN 106915745A CN 201710331501 A CN201710331501 A CN 201710331501A CN 106915745 A CN106915745 A CN 106915745A
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Abstract
The invention discloses a kind of production technology of silicon carbide micro-powder, comprise the following steps：S1：Sic raw material is taken, sic raw material is crushed, then screened, the fine grained that will be filtered out is crushed, and is then screened, the trickle powder that collection is filtered out obtains carborundum powder；S2：Carborundum powder is carried out into classification treatment, qualified one-level silicon carbide micro-powder and underproof carborundum powder is obtained；S3：Underproof carborundum powder is carried out into classification treatment, qualified two grades of silicon carbide micro-powders and underproof carborundum powder is obtained.The present invention can clearly separate the silicon carbide micro-powder of different stage such that it is able to improve resource utilization, it is to avoid cause the wasting of resources, and the purity of the silicon carbide micro-powder of production can be improved, so as to improve the quality of the silicon carbide micro-powder of production, process is simple is easy to operate.
Description
Technical field
The present invention relates to the production technical field of silicon carbide micro-powder, more particularly to a kind of production technology of silicon carbide micro-powder.
Background technology
Recently as the fast development of electronics and information industry and solar photovoltaic industry, the demand of silicon wafer persistently increases
Plus；Integrated circuit substrate, the cutting of the thin sheet products of solar cell substrate are prepared also in synchronous increase, at present using many
Wire cutting principle, drives the mortar being made up of silicon carbide abrasive to cut the monocrystalline silicon or polycrystalline silicon rod of high-purity with steel wire
Cut；As the key material of silicon wafer linear cutter, the demand also correspondingly sustainable growth of silicon carbide micro-powder；Carborundum
It is a kind of combination product for being formed using quartz sand and petroleum coke or anthracite under electric furnace high temperature action, according to
Appearance color is divided into two kinds of green and black, and crystal structure is hexagonal crystal system, and its high temperature resistant, chemical stability is good, and heat conduction is good, firmly
Degree is high, high mechanical strength, and density is big, and with quite sharp cutting edge and self-sharpening, cutting power is strong, thus extensive use
In various fields such as industrial abrasive grinding, refractory material, smelting iron and steel, military project space flight, and the production technology of silicon carbide micro-powder is
Technology for producing silicon carbide micro-powder, with the development of science and technology people have higher to the production technology of silicon carbide micro-powder
It is required that.
The production technology of existing silicon carbide micro-powder can not clearly separate the silicon carbide micro-powder of different stage mostly, from
It is unable to improve resource utilization, easily causes the wasting of resources, and the purity of the silicon carbide micro-powder of production can not be improved, leads
Cause production silicon carbide micro-powder it is of low quality, therefore, we have proposed a kind of production technology of silicon carbide micro-powder be used for solve
Above mentioned problem.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes a kind of production technology of silicon carbide micro-powder.
A kind of production technology of silicon carbide micro-powder proposed by the present invention, comprises the following steps：
S1：Sic raw material is taken, sic raw material is crushed, then screened, the fine grained that will be filtered out enters
Row is crushed, and is then screened, the trickle powder that collection is filtered out, and obtains carborundum powder；
S2：Carborundum powder is carried out into classification treatment, qualified one-level silicon carbide micro-powder and underproof carborundum powder is obtained；
S3：Underproof carborundum powder is carried out into classification treatment, qualified two grades of silicon carbide micro-powders and underproof are obtained
Carborundum powder；
S4：Underproof carborundum powder is carried out into classification treatment, qualified three-level silicon carbide micro-powder and underproof is obtained
Carborundum powder；
S5：Underproof carborundum powder is carried out into pulverization process, three classifications treatment is then carried out；
S6：One-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder are separately added into mixer, so
Add appropriate water to be stirred afterwards, one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three are obtained respectively
Level silicon carbide micro-powder suspension；
S7：Sieve other to one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three-level with removal of impurities is filtered
Silicon carbide micro-powder suspension carries out removal of impurities is filtered, forms filtrate and filter residue；
S8：Filtrate is separately added into centrigugal swing dryer carries out spin-drying, obtain wet one-level silicon carbide micro-powder, two grades
, then be carbonized for wet one-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level by silicon carbide micro-powder and three-level silicon carbide micro-powder
Silicon powder is washed and pickling respectively successively, micro- to one-level silicon carbide micro-powder, two grades of carborundum respectively with ultrasonic wave after pickling
Powder and three-level silicon carbide micro-powder carry out decentralized processing, then by the one-level silicon carbide micro-powder after dispersion, two grades of silicon carbide micro-powders and
Three-level silicon carbide micro-powder is dried；
S9：Randomly select the one-level silicon carbide micro-powder after partially desiccated, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder
Granularity Detection is carried out, when detection qualification rate is 90-100%, is then packed, complete the production of silicon carbide micro-powder.
Preferably, in the S1, sic raw material is taken, is crushed during sic raw material is added into disintegrating machine, Ran Houjin
Row screening, the coarse granule that will be filtered out is crushed, then screened again again, and the fine grained that will be filtered out adds ball milling
Crushed in machine, then screened, the thick micro mist that will be filtered out is crushed in adding ball mill again, is then entered again
Row screening, the trickle powder that collection is filtered out obtains carborundum powder.
Preferably, in the S2, classification treatment is carried out during carborundum powder is added into hydrocyclone, obtains qualified one-level
Silicon carbide micro-powder and underproof carborundum powder.
Preferably, in the S3, classification treatment is carried out during underproof carborundum powder is added into gas flow sizing machine, is closed
Two grades of silicon carbide micro-powders of lattice and underproof carborundum powder.
Preferably, in the S4, classification treatment is carried out during underproof carborundum powder is added into classification tank, obtains qualified
Three-level silicon carbide micro-powder and underproof carborundum powder.
Preferably, in the S5, pulverization process is carried out during underproof carborundum powder is added into flour mill, is then added successively
Entering hydrocyclone, gas flow sizing machine and classification tank carries out three classifications treatment.
In the present invention, a kind of production technology of silicon carbide micro-powder is processed and can clearly divided by carrying out three classifications
Go out the silicon carbide micro-powder of different stage such that it is able to improve resource utilization, it is to avoid cause the wasting of resources, by with removal of impurities is filtered
Screening is other to remove to one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three-level silicon carbide micro-powder suspension
Miscellaneous filtering can improve the purity of the silicon carbide micro-powder of production such that it is able to improve the quality of the silicon carbide micro-powder of production, this hair
The bright silicon carbide micro-powder that can clearly separate different stage such that it is able to improve resource utilization, it is to avoid cause the wasting of resources,
And the purity of the silicon carbide micro-powder of production can be improved such that it is able to and the quality of the silicon carbide micro-powder of raising production, process is simple,
It is easy to operate.
Specific embodiment
The present invention is made with reference to specific embodiment further explain.
Embodiment
The present embodiment proposes a kind of production technology of silicon carbide micro-powder, comprises the following steps：
S1：Sic raw material is taken, is crushed during sic raw material is added into disintegrating machine, then screened, will screened
The coarse granule for going out is crushed again, is then screened again, and the fine grained that will be filtered out is crushed in adding ball mill,
Then screened, the thick micro mist that will be filtered out is crushed in adding ball mill again, is then screened again, collection screen
The trickle powder selected, obtains carborundum powder；
S2：Will carborundum powder add hydrocyclone in carry out classification treatment, obtain qualified one-level silicon carbide micro-powder and
Underproof carborundum powder；
S3：Classification treatment is carried out during underproof carborundum powder is added into gas flow sizing machine, two grades of qualified carbonizations are obtained
Silicon powder and underproof carborundum powder；
S4：Classification treatment is carried out during underproof carborundum powder is added into classification tank, qualified three-level carborundum is obtained micro-
Powder and underproof carborundum powder；
S5：Will underproof carborundum powder add flour mill in carry out pulverization process, then sequentially add hydrocyclone,
Gas flow sizing machine and classification tank carry out three classifications treatment；
S6：One-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder are separately added into mixer, so
Add appropriate water to be stirred afterwards, one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three are obtained respectively
Level silicon carbide micro-powder suspension；
S7：Sieve other to one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three-level with removal of impurities is filtered
Silicon carbide micro-powder suspension carries out removal of impurities is filtered, forms filtrate and filter residue；
S8：Filtrate is separately added into centrigugal swing dryer carries out spin-drying, obtain wet one-level silicon carbide micro-powder, two grades
, then be carbonized for wet one-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level by silicon carbide micro-powder and three-level silicon carbide micro-powder
Silicon powder is washed and pickling respectively successively, micro- to one-level silicon carbide micro-powder, two grades of carborundum respectively with ultrasonic wave after pickling
Powder and three-level silicon carbide micro-powder carry out decentralized processing, then by the one-level silicon carbide micro-powder after dispersion, two grades of silicon carbide micro-powders and
Three-level silicon carbide micro-powder is dried；
S9：Randomly select the one-level silicon carbide micro-powder after partially desiccated, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder
Granularity Detection is carried out, when detection qualification rate is 90-100%, is then packed, complete the production of silicon carbide micro-powder.
The silicon carbide micro-powder of silicon carbide micro-powder and routine to the production technology production of the silicon carbide micro-powder of the present embodiment
The silicon carbide micro-powder of production technology production is tested, and draws following result：
| The present embodiment | It is conventional | |
| Resource utilization improves percentage (%) | 2.3-3.1 | 0 |
| Quality advance percentage (%) | 3.5-4.2 | 0 |
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of production technology of silicon carbide micro-powder, it is characterised in that comprise the following steps：
S1：Sic raw material is taken, sic raw material is crushed, then screened, the fine grained that will be filtered out carries out powder
It is broken, then screened, the trickle powder that collection is filtered out obtains carborundum powder；
S2：Carborundum powder is carried out into classification treatment, qualified one-level silicon carbide micro-powder and underproof carborundum powder is obtained；
S3：Underproof carborundum powder is carried out into classification treatment, qualified two grades of silicon carbide micro-powders and underproof carbonization is obtained
Silica flour；
S4：Underproof carborundum powder is carried out into classification treatment, qualified three-level silicon carbide micro-powder and underproof carbonization is obtained
Silica flour；
S5：Underproof carborundum powder is carried out into pulverization process, three classifications treatment is then carried out；
S6：One-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder are separately added into mixer, Ran Houjia
Enter appropriate water to be stirred, one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and tertiary carbon are obtained respectively
SiClx micro mist suspension；
S7：Sieve other to the carbonization of one-level silicon carbide micro-powder suspension, two grades of silicon carbide micro-powder suspension and three-level with removal of impurities is filtered
Silicon powder suspension carries out removal of impurities is filtered, forms filtrate and filter residue；
S8：Filtrate is separately added into centrigugal swing dryer carries out spin-drying, obtains wet one-level silicon carbide micro-powder, two grades of carbonizations
Silicon powder and three-level silicon carbide micro-powder, it is then that wet one-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and three-level carborundum is micro-
Powder is washed and pickling respectively successively, after pickling with ultrasonic wave respectively to one-level silicon carbide micro-powder, two grades of silicon carbide micro-powders and
Three-level silicon carbide micro-powder carries out decentralized processing, then by the one-level silicon carbide micro-powder after dispersion, two grades of silicon carbide micro-powders and three-level
Silicon carbide micro-powder is dried；
S9：Randomly selecting the one-level silicon carbide micro-powder after partially desiccated, two grades of silicon carbide micro-powders and three-level silicon carbide micro-powder is carried out
Granularity Detection, when detection qualification rate is 90-100%, is then packed, and completes the production of silicon carbide micro-powder.
2. the production technology of a kind of silicon carbide micro-powder according to claim 1, it is characterised in that in the S1, take carbonization
Silicon raw material, is crushed during sic raw material is added into disintegrating machine, is then screened, and the coarse granule that will be filtered out is carried out again
Crush, then screened again, the fine grained that will be filtered out is crushed in adding ball mill, is then screened, and will be sieved
The thick micro mist selected is crushed in adding ball mill again, is then screened again, the trickle powder that collection is filtered out, and is obtained
Carborundum powder.
3. the production technology of a kind of silicon carbide micro-powder according to claim 1, it is characterised in that in the S2, will be carbonized
Silica flour carries out classification treatment in adding hydrocyclone, obtains qualified one-level silicon carbide micro-powder and underproof carborundum powder.
4. the production technology of a kind of silicon carbide micro-powder according to claim 1, it is characterised in that in the S3, will not conform to
The carborundum powder of lattice carries out classification treatment in adding gas flow sizing machine, obtains qualified two grades of silicon carbide micro-powders and underproof carbon
SiClx powder.
5. the production technology of a kind of silicon carbide micro-powder according to claim 1, it is characterised in that in the S4, will not conform to
The carborundum powder of lattice carries out classification treatment in adding classification tank, obtains qualified three-level silicon carbide micro-powder and underproof carborundum
Powder.
6. the production technology of a kind of silicon carbide micro-powder according to claim 1, it is characterised in that in the S5, will not conform to
The carborundum powder of lattice carries out pulverization process in adding flour mill, then sequentially adds hydrocyclone, gas flow sizing machine and classification
Tank carries out three classifications treatment.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484016A (en) * | 2020-04-13 | 2020-08-04 | 宁夏和兴碳基材料有限公司 | Production process of silicon carbide fine powder (70F) |
| CN114804127A (en) * | 2021-01-19 | 2022-07-29 | 安徽永汇鑫新材料科技有限公司 | Production process of active silicon micropowder |
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| CN102249236B (en) * | 2011-06-02 | 2012-12-05 | 江苏大阳光辅股份有限公司 | Production process for silicon carbide micropowder |
| CN106365167A (en) * | 2016-08-31 | 2017-02-01 | 福建省建瓯市富晶宝微粒有限公司 | Silicon carbide micropowder impurity clearing and removing technology and production equipment |
| CN106890724A (en) * | 2017-03-12 | 2017-06-27 | 郑州睿科生化科技有限公司 | A kind of production technology of silicon carbide micro-powder |
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2017
- 2017-05-11 CN CN201710331501.1A patent/CN106915745A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249236B (en) * | 2011-06-02 | 2012-12-05 | 江苏大阳光辅股份有限公司 | Production process for silicon carbide micropowder |
| CN106365167A (en) * | 2016-08-31 | 2017-02-01 | 福建省建瓯市富晶宝微粒有限公司 | Silicon carbide micropowder impurity clearing and removing technology and production equipment |
| CN106890724A (en) * | 2017-03-12 | 2017-06-27 | 郑州睿科生化科技有限公司 | A kind of production technology of silicon carbide micro-powder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484016A (en) * | 2020-04-13 | 2020-08-04 | 宁夏和兴碳基材料有限公司 | Production process of silicon carbide fine powder (70F) |
| CN114804127A (en) * | 2021-01-19 | 2022-07-29 | 安徽永汇鑫新材料科技有限公司 | Production process of active silicon micropowder |
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Application publication date: 20170704 |