CN108862279A - A kind of metallic silicon formula and preparation method thereof - Google Patents
A kind of metallic silicon formula and preparation method thereof Download PDFInfo
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- CN108862279A CN108862279A CN201810540400.XA CN201810540400A CN108862279A CN 108862279 A CN108862279 A CN 108862279A CN 201810540400 A CN201810540400 A CN 201810540400A CN 108862279 A CN108862279 A CN 108862279A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
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Abstract
A kind of metallic silicon formula and preparation method thereof, the preparation method of the metallic silicon formula includes the following steps：S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, is placed in the silicon material particle that granulation is granulated in pelletizer, control silicon material particle moisture content is lower than 5%；S2, electrode is suspended on by burner hearth center using capable hang, the distance of coordination electrode distance from bottom furnace bottom and furnace lining is more than 20cm, silicon material particle in step S1 is added in medium-frequency induction furnace, controlling melting temperature is 1500-1600 DEG C, in melting process, silicon material particle constantly is added, until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cooling, after solidification, silicon ingot is shifted out of ingot mould to get；Silicon liquid is after rolling, cooling in S4, burner hearth, and cooling finish is cleaned out intermediate frequency fire door clinker with rake slag tool.
Description
Technical field
The present invention relates to metallic silicon recycling, specifically a kind of metallic silicon formula and preparation method thereof.
Background technique
Metallic silicon is also known as silicon metal or industrial silicon, is mainly used for the additive as non-ferrous alloy.Metallic silicon is
By quartz and the product smelted in electrothermal furnace of coke, the content of principal component element silicon 98% or so, remaining impurity be iron,
Aluminium, calcium etc..
Good constituent element in silicon or aluminium alloy, most cast aluminium alloy golds all contain silicon.Silicon is that electronics industry is ultrapure
The raw material of silicon, the electronic device that ultrapure single crystal silicon semiconductor is done have small in size, light-weight, good reliability and service life length etc. excellent
Point.High power transistor made of silicon single crystal mixed with specific trace impurity, rectifier and solar battery, performance is compared with germanium single crystal
Manufactured battery is excellent.
It is based on, the application prospect of metallic silicon, industrialized production metallic silicon is developed rapidly.However, in industrialized production
It is frequently accompanied by the process and generates waste material such as silicon powder, although the waste material of the non-industrialized production of silicon powder, wherein silicone content is still higher, so
And manufacturing enterprise causes a large amount of silicon powder as Industry Waste mostly without the technical solution for recycling the metallic silicon in waste material at present
Material is toppled over, and the serious wasting of resources is not only caused, and causes more serious environmental pollution.
It is therefore opened for currently without a kind for the treatment of process for effectively recycling the metallic silicon in industrial waste silicon powder in real time
It is green to send out a kind of, environmental protection, economic silicon powder recovery processing technique alleviate the ring of trash discharge for reduction enterprise's production cost
Packing pressure is most important.
Summary of the invention
(1) the technical issues of solving
In view of the deficiency of the prior art, the present invention provides a kind of metallic silicon formula and preparation method thereof, passes through
Technical solution disclosed by the invention effectively recycles industrial waste silicon powder, not only reduces production cost, realizes waste
It utilizes, while reducing environmental protection pressure.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1500-1600
DEG C, in melting process, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out furnace
Thorax after graphite electrode is hung out, constantly adds silicon material particle until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；
Silicon liquid is after rolling, cooling in S4, burner hearth, and cooling finish is cleaned out intermediate frequency fire door clinker with rake slag tool.
Preferably, the working frequency of the medium-frequency induction furnace is 800-1000HZ.
Preferably, the melting temperature in the step S2 is 1550 DEG C.
Preferably, the auxiliary agent is the mixture of dispersing agent and bonding agent.
Preferably, the silicon powder block is：Silicon powder is formed by block after plate compression, dehydration.
Beneficial effect
It, will by adding auxiliary agent in powder in the step S1 of preparation method the present invention provides a kind of metallic silicon formula
Silicon powder is prepared into particulate material, effectively prevents the dust that silicon powder is formed in art production process and is made because being absorbed by the body
At injury.Meanwhile the formation of dust undoubtedly increases the difficulty of processing pollution.It is prepared into particulate matter, not only molten
Melt easy to operate during charging, and dust yield is few.
Silicon material heating particulates are melted in preparation method step S2 using medium-frequency induction furnace, using aforesaid way by silicon material
Metallic silicon in particle recycles.
Pass through, which efficiently solves the industrial waste silicon ash generated in enterprise production process, because relevant useless
Expect recovery process, cause a large amount of silicon powder to be toppled over as industrial waste, not only cause the serious wasting of resources, and causes more tight
The environmental pollution of weight.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment 1:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1550 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；Silicon liquid is after rolling, cooling in S4, burner hearth, cooling to finish with rake
Slag tool cleans out intermediate frequency fire door clinker.
Wherein, the working frequency of the medium-frequency induction furnace is 1000HZ.
Embodiment 2:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1500 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；Silicon liquid is after rolling, cooling in S4, burner hearth, cooling to finish with rake
Slag tool cleans out intermediate frequency fire door clinker.
Wherein, the working frequency of the medium-frequency induction furnace is 800HZ.
Embodiment 3:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1580 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；Silicon liquid is after rolling, cooling in S4, burner hearth, cooling to finish with rake
Slag tool cleans out intermediate frequency fire door clinker.
Wherein, the working frequency of the medium-frequency induction furnace is 950HZ.
Embodiment 4:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1550 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；Silicon liquid is after rolling, cooling in S4, burner hearth, cooling to finish with rake
Slag tool cleans out intermediate frequency fire door clinker.
Wherein, the working frequency of the medium-frequency induction furnace is 1000HZ.
Embodiment 5:
A kind of metallic silicon formula, the metallic silicon formula are made by silicon powder block is smelting, the preparation of the metallic silicon formula
Method includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, being placed in pelletizer and being granulated into outer diameter is 8-9mm's
Cylindrical particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than
5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency in using row
On quartz sand slope protection at frequency electric induction furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and
The distance of furnace lining is more than 20cm, and the silicon material particle in step S1 is added in medium-frequency induction furnace, controls the material of silicon material particle
Face is located at furnace depth 2/3, and charging finishes unlatching medium-frequency induction furnace and melted, and control melting temperature is 1580 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid is cold
But, after solidifying, silicon ingot shifted out of ingot mould with fixture to get；Silicon liquid is after rolling, cooling in S4, burner hearth, cooling to finish with rake
Slag tool cleans out intermediate frequency fire door clinker.
Wherein, the working frequency of the medium-frequency induction furnace is 980HZ.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that:It still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of metallic silicon formula, which is characterized in that the metallic silicon formula is made by silicon powder block is smelting, and the metallic silicon is matched
The preparation method of side includes the following steps：
S1, silicon powder block is broken into powder, after adding suitable auxiliary agent, is placed in pelletizer the cylinder for being granulated into that outer diameter is 8-9mm
Shape particle, after drying machine low temperature drying, the silicon material particle granulated, control silicon material particle moisture content is lower than 5%；
S2, the tapping that graphite electrode top is inserted into using stainless steel bar are hung stainless steel bar accumbency using row in intermediate frequency sense
It answers on the quartz sand slope protection at electric furnace fire door, electrode is made to be suspended on burner hearth center, coordination electrode distance from bottom furnace bottom and furnace lining
Distance be more than 20cm, the silicon material particle in step S1 is added in medium-frequency induction furnace, control silicon material particle charge level position
At furnace depth 2/3, charging finishes unlatching medium-frequency induction furnace and is melted, and control melting temperature is 1500-1600 DEG C, melts
During melting, charge level height is reduced, and is constantly added silicon material particle, is added and finish, and is hung using row graphite electrode hanging out burner hearth, stone
After electrode ink is hung out, silicon material particle is constantly added until silicon material particle all melts in burner hearth, burner hearth is full of silicon liquid；
S3, the silicon liquid in burner hearth is poured into ladle, then the molten iron in ladle is cast on ingot mould, silicon liquid cooling,
After solidification, silicon ingot shifted out of ingot mould with fixture to get；
Silicon liquid is after rolling, cooling in S4, burner hearth, and cooling finish is cleaned out intermediate frequency fire door clinker with rake slag tool.
2. metallic silicon formula according to claim 2, which is characterized in that the working frequency of the medium-frequency induction furnace is
800-1000HZ。
3. metallic silicon formula according to claim 1, which is characterized in that the melting temperature in the step S2 is 1550
℃。
4. metallic silicon formula according to claim 1, which is characterized in that the auxiliary agent is the mixing of dispersing agent and bonding agent
Object.
5. -5 any metallic silicon formula according to claim 1, which is characterized in that the silicon powder block is：Silicon powder passes through plate
Block is formed by after frame filters pressing, dehydration.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294997A (en) * | 2021-05-11 | 2021-08-24 | 江苏秦烯新材料有限公司 | Device and method for smelting chloride-containing silicon slag with strong corrosivity |
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| CN106185948A (en) * | 2016-07-11 | 2016-12-07 | 厦门大学 | A kind of industrial silicon slag making dephosphorization process |
| CN106219550A (en) * | 2016-07-25 | 2016-12-14 | 刘成成 | A kind of method utilizing industrial waste SILICA FUME to prepare industrial silicon and production system |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627281A (en) * | 2012-04-27 | 2012-08-08 | 羊实 | Method for smelting metal silicon by using recycled silicon fines |
| CN102786054A (en) * | 2012-09-07 | 2012-11-21 | 昆明冶金研究院 | Method for reduction smelting of microsilica |
| CN102910631A (en) * | 2012-09-21 | 2013-02-06 | 福建省上杭县九洲硅业有限公司 | Preparation method of silica micropowder-carbon composite raw material used for smelting industrial silicon |
| KR20150090653A (en) * | 2014-01-29 | 2015-08-06 | 인하대학교 산학협력단 | The method for fabrication of silicone nano-particle by thermal plasma jet and the silicone nano-particle thereby |
| CN106185948A (en) * | 2016-07-11 | 2016-12-07 | 厦门大学 | A kind of industrial silicon slag making dephosphorization process |
| CN106219550A (en) * | 2016-07-25 | 2016-12-14 | 刘成成 | A kind of method utilizing industrial waste SILICA FUME to prepare industrial silicon and production system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113294997A (en) * | 2021-05-11 | 2021-08-24 | 江苏秦烯新材料有限公司 | Device and method for smelting chloride-containing silicon slag with strong corrosivity |
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