CN107311182A - A kind of device and method thereof of industrial silicon melt external refining purification - Google Patents
A kind of device and method thereof of industrial silicon melt external refining purification Download PDFInfo
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- CN107311182A CN107311182A CN201710519004.4A CN201710519004A CN107311182A CN 107311182 A CN107311182 A CN 107311182A CN 201710519004 A CN201710519004 A CN 201710519004A CN 107311182 A CN107311182 A CN 107311182A
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- silicon melt
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- ladle
- side wall
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 121
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000010703 silicon Substances 0.000 title claims abstract description 118
- 238000007670 refining Methods 0.000 title claims abstract description 83
- 238000000746 purification Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000011449 brick Substances 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 239000010425 asbestos Substances 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 7
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 26
- 239000000047 product Substances 0.000 description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 229920001296 polysiloxane Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229910001634 calcium fluoride Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/037—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Abstract
The present invention relates to a kind of device and method thereof of industrial silicon melt external refining purification, belong to purifying industrial silicon technology field.The equipment includes two-maing ladle, nozzle, breather pipe and caisson, two-mans ladle bottom and side wall is respectively equipped with a nozzle, nozzle is connected by breather pipe with caisson, is two-mand ladle and is respectively equipped with refractory brick, asbestos board and brandreth from the inside to the outside, and refractory brick is provided with nozzle.Compressed air or refinery gas are continually fed into the nozzle for two-maing ladle bottom and side wall by caisson, the silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle, when the height for the nozzle that the height that silicon melt is located in two-maing ladle reaches side wall, adjust the flow and gas ingredients of ventilation gas, external refining is carried out to silicon melt, in this process, according to refinery issues, refining agent is added, is carried out while realizing silicon melt blowing refining and refining agent slag refining；Push the industrial silicon product for being obtained after scum silica frost and meeting national standard aside.This equipment purpose is to prepare the low silicon product of impurity content.
Description
Technical field
The present invention relates to a kind of device and method thereof of industrial silicon melt external refining purification, belong to purifying industrial silicon technology
Field.
Background technology
Industrial silicon is widely used in the industries such as metallurgy, electronics, chemical industry, and its traditional mode of production is with silicon in mineral hot furnace
Stone and carbonaceous reducing agent, which are smelted, to be made.In smelting process, the other elements brought into furnace charge in stove are while silicon is reduced
It is reduced, and incorporates in silicon melt, therefore industrial silicon and there is the plurality of impurities such as Al, Ca, Ti, C, the presence of these impurity is serious
The performance of industrial silicon is influenceed, uses and is worth；Meanwhile, with the fast development of every profession and trade, the product quality to industrial silicon is also carried
Go out higher requirement, market competition is further fierce, therefore the study hotspot of the purification always material worker to industrial silicon.
It is a kind of economic and practical and simple and easy to apply industrial silicon method of refining that external refining is carried out in two-maing ladle, can be effective
Remove impurity element in silicon melt, improve industrial silicon product quality, adjustment silicon industrial products composition, in actual industrial production
Extensive use is arrived.However, at present during industrial silicon production, the general only one of which of nozzle two-mand ladle, and it is arranged on bottom of two-maing ladle
The centre position in portion, silicon melt when this design can make refining in actual production produce the dead angle of stirring, refining time compared with
Long, thermal loss is more, so as to influence the quality and yield of silicon after refining.
The content of the invention
The problem of existing for above-mentioned prior art and deficiency, the present invention provide a kind of industrial silicon melt external refining purification
Device and method thereof.This device and method thereof purpose is to prepare the industrial silicon product that product composition is uniform, impurity content is low, and
And this method refining time is short, environmental nonpollution.The present invention is achieved through the following technical solutions.
A kind of equipment of industrial silicon melt external refining purification, including two-man ladle, nozzle 1, breather pipe 2 and caisson 3, lift
Bag bottom and side wall are respectively equipped with a nozzle 1, and nozzle 1 is connected with caisson 3 by breather pipe 2, two-mand ladle from the inside to the outside
Refractory brick 4, asbestos board 5 and brandreth 6 are respectively equipped with, refractory brick 4 is provided with nozzle 1.
The radius r of nozzle 1 set on the bottom of two-maing ladle1, bottom nozzle 1 and two-man ladle the bottom center of circle apart from l1And lift
Relation between bag bottom radius R is：0≤l1≤R-r1。
The radius of nozzle 1 set on the side wall of two-maing ladler2, side wall top nozzle 1 and two-man ladle sidewall bottom l2And height of two-maing ladle
The relation spent between H is r2≤l2≤H-r2, wherein r2≤0.5H。
A kind of application process of the equipment of industrial silicon melt external refining purification, it is comprised the following steps that：
Step 1, compressed air or refinery gas be continually fed into the nozzle 1 for two-maing ladle bottom and side wall by caisson 3,
The silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle, when the height that silicon melt is located in two-maing ladle reaches the height of the nozzle 1 of side wall
When spending, the flow and gas ingredients of ventilation gas are adjusted, external refining is carried out to silicon melt, in this process, according to refining feelings
Condition, adds refining agent, is carried out while realizing silicon melt blowing refining and refining agent slag refining；
After step 2, step 1 refining are finished, the scum silica frost of silicon melt surface is pushed aside, realize after the separation of slag silicon, carry out pouring for silicon melt
Note, obtains the industrial silicon product for meeting national standard.
The step 1 be continually fed into compressed air, the flow of refinery gas or adjust the flow of ventilation gas for 0.5~
15m3/ h, pressure is 1~15MPa, and duration of ventilation is 0.3~8h.Above-mentioned compressed air includes air and oxygen-enriched air；Refinery gas
Body includes the mixed gas of one or more of gas arbitrary proportions in air, oxygen-enriched air, vapor etc..
It with silicon melt mass ratio is 20 that the addition of refining agent, which is, in the step 1：1~1：20；Refining agent is silicon melt
General refining agent is refined, is included but is not limited to：CaO、CaF2、SiO2, the Ith and II a kind of or many in main group alkali metal compound etc.
Plant the admixture refining agent of refining agent arbitrary proportion；Refining agent feed postition includes：Disposable addition, in batches addition etc..
The scum silica frost for pushing silicon melt surface aside in above-mentioned steps 2, realizes after the separation of slag silicon, carries out the pouring ladle of silicon melt
Include：First skim and pour into a mould again, block scum silica frost in casting process and scum silica frost is remained in bottom of two-maing ladle etc., it is naturally cold after silicon melt cast
But the industrial silicon product for meeting national standard is obtained afterwards.
One nozzle is arranged at original only bottom of two-maing ladle, and it is too small to be passed through refinery gas flow, can make in bag the stirring of top silicon liquid not
Fully, removal of impurities is undesirable；Air demand is excessive, and the slag that surface of the silicon liquid is covered can be made to be involved in inside silicon liquid, the dirt to silicon liquid is caused
Dye, air demand is difficult to hold, and master worker's operation difficulty is larger.By transformation, one is respectively mounted in bottom and side wall appropriate location
Individual nozzle, and independent scavenger system is each configured with, gas flow, the gas pressure of side wall nozzle can be adjusted as needed
Power, largely reduces the operation difficulty of worker's division.
The present invention carries out blowing refining by side wall and two nozzles 1 of bottom, has fully ensured that silicon melt external refining
During dynamic conditions, effectively eliminated stirring dead angle, solved the problems, such as silicon liquid uneven components：Also shorten stove simultaneously
Refining time in outer refining process, reduces the thermal loss of silicon melt.
, can be toward special interior addition refining agent of two-maing ladle according to refinery issues during blowing refining, adjustment side wall and bottom
The gas componant of portion's nozzle, gas flow, so as to improve refining effect, obtain advantage of lower cost, the of a relatively high work of quality
Industry silicon product, effectively improves the furnace outer refining technology of existing industrial silicon melt.
Beneficial effects of the present invention：
（1）The present invention carries out external refining in special two-man ladle, and combines side-blown, bottom blowing, slag refining, uniform in quality, Al,
The impurity contents such as Ca, Ti, C are efficiently removed, simple to operate, and refining effect is improved well, and easily realize large-scale plant
Change application.
（2）Two-maing ladle using side-blown, bottom blowing joint injection for external refining of the present invention, improves refining speed, shortens anti-
Between seasonable, production efficiency is improved well.
（3）As long as the present invention is simply transformed two-maing ladle, in side wall and respectively one spray of setting of bottom appropriate location of two-maing ladle
Mouth, and independent scavenger system is configured, its equipment is simple, and capital expenditure is few；And raw material and byproduct will not in refining process
Environment is polluted, meets green metallurgical requirement.
Brief description of the drawings
Fig. 1 is present device structural representation；
Fig. 2 is the device structure schematic diagram of the embodiment of the present invention 1；
Fig. 3 is the device structure schematic diagram of the embodiment of the present invention 2；
Fig. 4 is the device structure schematic diagram of the embodiment of the present invention 3.
In figure：1- nozzles, 2- breather pipes, 3- caissons, 4- refractory brick, 5- asbestos boards, 6- brandreths.
Embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As illustrated in fig. 1 and 2, the equipment of industrial silicon melt external refining purification, including two-man ladle, nozzle 1, breather pipe 2 and gas storage
Device 3, two-mans ladle bottom and side wall is respectively equipped with a nozzle 1, and nozzle 1 is connected with caisson 3 by breather pipe 2, two-mand ladle
Refractory brick 4, asbestos board 5 and brandreth 6 are respectively equipped with from the inside to the outside, and refractory brick 4 is provided with nozzle 1.
Wherein two-man ladle the radius r of nozzle 1 set on the wall of side2For 0.35H（H is height of two-maing ladle）, side wall top nozzle 1 is with two-maing ladle
Sidewall bottom l2For 0.65H（Meet r2≤l2≤H-r2）, the radius r of nozzle 1 set on bottom of two-maing ladle1For 0.2R, bottom of two-maing ladle
The nozzle 1 of upper setting is in centre position（I.e. bottom nozzle 1 and two-man ladle the bottom center of circle apart from l1Equal to 0）,
The application process of the equipment of industrial silicon melt external refining purification, it is comprised the following steps that：
Step 1, compressed air is continually fed into two-man ladle bottom and side wall nozzle 1 by caisson 3（The flow of compressed air
For 5m3/h）, the silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle（Silicon melt mainly includes following mass percent component：
96%Si、0.8%Al、3%Ca）, with the increase for middle silicon melt of two-maing ladle, bottom nozzle 1 is passed through oxygen-enriched air（Oxygen and air body
Product is than being 9：1）, the flow of oxygen-enriched air gas is 5m3/ h, pressure is 1MPa；When the height that silicon melt is located in two-maing ladle is reached
During the height of the nozzle 1 of side wall, the nozzle 1 of side wall is passed through oxygen-enriched air（Oxygen is 9 with volume of air ratio：1）, oxygen-enriched air gas
The flow of body is 5m3/ h, pressure is 1MPa；And it is 2 that the silicon melt in two-maing ladle, which adds mass ratio,:5:1 SiO2、CaO、CaF2
Admixture refining agent, admixture refining agent is 20 with silicon melt mass ratio：1, ventilated and refined 0.3h；
After step 2, step 1 refining are finished, the scum silica frost of silicon melt surface is pushed aside, realize after the separation of slag silicon, carry out pouring for silicon melt
Note, obtains the industrial silicon product for meeting national standard.
Al content in the industrial silicon product that the present embodiment is prepared<0.1wt%, Ca content<0.02wt%, silicone content is
99.6%.The equipment of existing conventional silicon melt external refining purification（Nozzle 1 only is set in bottom centre position of two-maing ladle）With this
Al content in the silicon product prepared under embodiment identical Parameter Conditions<0.3wt%, Ca content<0.05wt%, silicone content is
99.2%, hence it is evident that it can be seen that the impurity content quilt such as device A l, Ca, Ti, C of industrial silicon melt external refining purification of the application
Efficiently remove, improve refining effect.
Embodiment 2
As shown in figs. 1 and 3, the equipment of industrial silicon melt external refining purification, including two-man ladle, nozzle 1, breather pipe 2 and gas storage
Device 3, two-mans ladle bottom and side wall is respectively equipped with a nozzle 1, and nozzle 1 is connected with caisson 3 by breather pipe 2, two-mand ladle
Refractory brick 4, asbestos board 5 and brandreth 6 are respectively equipped with from the inside to the outside, and refractory brick 4 is provided with nozzle 1.
Wherein two-man ladle the radius r of nozzle 1 set on the wall of side2For 0.5H（H is height of two-maing ladle）, side wall top nozzle 1 is with two-maing ladle
Sidewall bottom l2For 0.5H（Meet r2≤l2≤H-r2）, the radius r of nozzle 1 set on bottom of two-maing ladle1For 0.3R, two-man ladle on bottom
The nozzle 1 of setting is in centre position（I.e. bottom nozzle 1 and two-man ladle the bottom center of circle apart from l1Equal to 0）,
The application process of the equipment of industrial silicon melt external refining purification, it is comprised the following steps that：
Step 1, compressed air is continually fed into two-man ladle bottom and side wall nozzle 1 by caisson 3（The flow of compressed air
For 10m3/h）, the silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle（Silicon melt mainly includes following mass percent component：
96%Si、0.8%Al、3%Ca）, with the increase for middle silicon melt of two-maing ladle, it is 1 that bottom nozzle 1, which is passed through volume ratio,:1 oxygen-enriched air（Oxygen
Gas is 9 with volume of air ratio：1）With vapor mixed gas, the flow of mixed gas is 10m3/ h, pressure is 15MPa；Work as silicon
When melt is located at the height for the nozzle 1 that the height in two-maing ladle reaches side wall, it is 1 that the nozzle 1 of side wall, which is passed through volume ratio,:1 oxygen-enriched sky
Gas（Oxygen is 9 with volume of air ratio：1）With vapor mixed gas, the flow of mixed gas is 10m3/ h, pressure is 15MPa；
And it is 20 that the silicon melt in two-maing ladle, which adds mass ratio,：20：2：1 SiO2、CaO、CaF2、Li2O admixture refining agents, mixing refining
Agent is 10 with silicon melt mass ratio：1, ventilated and refined 1h；
After step 2, step 1 refining are finished, the scum silica frost of silicon melt surface is pushed aside, realize after the separation of slag silicon, carry out pouring for silicon melt
Note, obtains the industrial silicon product for meeting national standard.
Al content in the industrial silicon product that the present embodiment is prepared<0.01wt%, Ca content<0.01wt%, B content<
10ppm, silicone content is 99.7%.The equipment of existing conventional silicon melt external refining purification（Only installed in bottom interposition of two-maing ladle
Put nozzle 1）The Al content in the silicon product with being prepared under the present embodiment identical Parameter Conditions<0.04wt%, Ca content<
0.05wt%, silicone content is 99.5%, hence it is evident that it can be seen that the application industrial silicon melt external refining purification device A l, Ca,
The impurity contents such as Ti, C are efficiently removed, and improve refining effect.
Embodiment 3
As shown in figs. 1 and 4, the equipment of industrial silicon melt external refining purification, including two-man ladle, nozzle 1, breather pipe 2 and gas storage
Device 3, two-mans ladle bottom and side wall is respectively equipped with a nozzle 1, and nozzle 1 is connected with caisson 3 by breather pipe 2, two-mand ladle
Refractory brick 4, asbestos board 5 and brandreth 6 are respectively equipped with from the inside to the outside, and refractory brick 4 is provided with nozzle 1.
Wherein two-man ladle the radius r of nozzle 1 set on the wall of side2For 0.2H（H is height of two-maing ladle）, side wall top nozzle 1 is with two-maing ladle
Sidewall bottom l2For 0.3H（Meet r2≤l2≤H-r2）, the radius r of nozzle 1 set on bottom of two-maing ladle1For 0.1R, two-man ladle on bottom
The nozzle 1 of setting is with the bottom center of circle of two-maing ladle apart from l1For 0.7R（Meet 0≤l1≤R-r1）,
The application process of the equipment of industrial silicon melt external refining purification, it is comprised the following steps that：
Step 1, compressed air is continually fed into two-man ladle bottom and side wall nozzle 1 by caisson 3（The flow of compressed air
For 15m3/h）, the silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle（Silicon melt mainly includes following mass percent component：
96%Si、0.8%Al、3%Ca）, with the increase for middle silicon melt of two-maing ladle, it is 1 that bottom nozzle 1, which is passed through volume ratio,:1 hydrogen and water steam
Oxygen mixture, the flow of mixed gas is 0.5m3/ h, pressure is 10MPa；When the height that silicon melt is located in two-maing ladle reaches side
During the height of the nozzle 1 of wall, it is 1 that the nozzle 1 of side wall, which is passed through volume ratio,:1 hydrogen and vapor mixed gas, the stream of mixed gas
Measure as 0.5m3/ h, pressure is 10MPa；And the silicon melt in two-maing ladle adds CaO：CaF2Mass ratio is 10：1 refining agent, refining
Agent is 1 with silicon melt mass ratio：20, ventilated and refined 8h；
After step 2, step 1 refining are finished, the scum silica frost of silicon melt surface is pushed aside, realize after the separation of slag silicon, carry out pouring for silicon melt
Note, obtains the industrial silicon product for meeting national standard.
Al content in the industrial silicon product that the present embodiment is prepared<0.01wt%, Ca content<0.005wt%, B content<
8ppm, silicone content is 99.8%.The equipment of existing conventional silicon melt external refining purification（Only installed in bottom interposition of two-maing ladle
Put nozzle 1）The Al content in the silicon product with being prepared under the present embodiment identical Parameter Conditions<0.05wt%, Ca content<
0.02wt%, silicone content is 99.5%, hence it is evident that it can be seen that the application industrial silicon melt external refining purification device A l, Ca,
The impurity contents such as Ti, C are efficiently removed, and improve refining effect.
Above in association with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned
Embodiment, can also be before present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Put that various changes can be made.
Claims (6)
1. a kind of equipment of industrial silicon melt external refining purification, it is characterised in that：Including two-maing ladle, nozzle（1）, breather pipe（2）
And caisson（3）, two-man ladle bottom and side wall be respectively equipped with a nozzle（1）, nozzle（1）Pass through breather pipe（2）With gas storage
Device（3）Connection, two-mans ladle and is respectively equipped with refractory brick from the inside to the outside（4）, asbestos board（5）And brandreth（6）, refractory brick（4）It is provided with
Nozzle（1）.
2. the equipment of industrial silicon melt external refining purification according to claim 1, it is characterised in that：The bottom of two-maing ladle
The nozzle of upper setting（1）Radius r1, bottom nozzle（1）With the bottom center of circle of two-maing ladle apart from l1And between the bottom radius R that two-mans ladle
Relation is：0≤l1≤R-r1。
3. the equipment of industrial silicon melt external refining purification according to claim 1, it is characterised in that：The side wall of two-maing ladle
The nozzle of upper setting（1）Radius r2, side wall top nozzle（1）With the sidewall bottom l that two-mans ladle2And the relation between the height H that two-mans ladle is r2
≤l2≤H-r2, wherein r2≤0.5H。
4. a kind of application process of the equipment purified according to any described industrial silicon melt external refining of claims 1 to 3, its
It is characterised by comprising the following steps that：
Step 1, pass through caisson（3）To the nozzle of two-man ladle bottom and side wall（1）In be continually fed into compressed air or refining
Gas, the silicon melt that mine heat furnace smelting goes out is put into in two-maing ladle, when the height that silicon melt is located in two-maing ladle reaches the nozzle of side wall
（1）Height when, adjust ventilation gas flow and gas ingredients, to silicon melt carry out external refining, in this process, according to
Refinery issues, add refining agent, are carried out while realizing silicon melt blowing refining and refining agent slag refining；
After step 2, step 1 refining are finished, the scum silica frost of silicon melt surface is pushed aside, realize after the separation of slag silicon, carry out pouring for silicon melt
Note, obtains the industrial silicon product for meeting national standard.
5. the application process of the equipment of industrial silicon melt external refining purification according to claim 4, it is characterised in that：Institute
The flow for stating step 1 regulation ventilation gas is 0.5~15m3/ h, pressure is 1~15MPa, and duration of ventilation is 0.3~8h.
6. the application process of the equipment of industrial silicon melt external refining purification according to claim 5, it is characterised in that：Institute
The addition of refining agent in step 1 is stated to be 20 with silicon melt mass ratio：1~1：20.
Priority Applications (1)
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| CN201710519004.4A CN107311182A (en) | 2017-06-30 | 2017-06-30 | A kind of device and method thereof of industrial silicon melt external refining purification |
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| CN201710519004.4A CN107311182A (en) | 2017-06-30 | 2017-06-30 | A kind of device and method thereof of industrial silicon melt external refining purification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113748086A (en) * | 2019-04-30 | 2021-12-03 | 瓦克化学股份公司 | Method for refining a crude silicon melt using a particulate mediator |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034886A (en) * | 1959-11-12 | 1962-05-15 | Electrometallurgique De Montri | Process for refining silicon and ferrosilicons and resultant products |
| CN1473203A (en) * | 2000-09-14 | 2004-02-04 | �ձ��ֹ���ʽ���� | Refining agent and refining method |
| CN1497054A (en) * | 2002-10-18 | 2004-05-19 | 新日本制铁株式会社 | Refining method of chromium containing fused metal |
| CN101705336A (en) * | 2009-11-25 | 2010-05-12 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN101705417A (en) * | 2009-11-25 | 2010-05-12 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN102241400A (en) * | 2011-05-17 | 2011-11-16 | 云南永昌硅业股份有限公司 | External refining method of industrial silicon |
| CN103058200A (en) * | 2013-01-21 | 2013-04-24 | 昆明理工大学 | Method for external refining purification of industrial silicon melt |
| CN203159236U (en) * | 2013-01-21 | 2013-08-28 | 昆明理工大学 | Industrial silicon furnace external refining ladle adopting microwave heating |
| CN104769136A (en) * | 2012-10-30 | 2015-07-08 | 杰富意钢铁株式会社 | Refine method of hot metal |
| CN204550074U (en) * | 2015-02-05 | 2015-08-12 | 昆明理工大学 | A kind of industrial silicon melt refining induction converting furnace |
| CN207061882U (en) * | 2017-06-30 | 2018-03-02 | 昆明理工大学 | A kind of equipment of industrial silicon melt external refining purification |
-
2017
- 2017-06-30 CN CN201710519004.4A patent/CN107311182A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034886A (en) * | 1959-11-12 | 1962-05-15 | Electrometallurgique De Montri | Process for refining silicon and ferrosilicons and resultant products |
| CN1473203A (en) * | 2000-09-14 | 2004-02-04 | �ձ��ֹ���ʽ���� | Refining agent and refining method |
| CN1497054A (en) * | 2002-10-18 | 2004-05-19 | 新日本制铁株式会社 | Refining method of chromium containing fused metal |
| CN101705336A (en) * | 2009-11-25 | 2010-05-12 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN101705417A (en) * | 2009-11-25 | 2010-05-12 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN102241400A (en) * | 2011-05-17 | 2011-11-16 | 云南永昌硅业股份有限公司 | External refining method of industrial silicon |
| CN104769136A (en) * | 2012-10-30 | 2015-07-08 | 杰富意钢铁株式会社 | Refine method of hot metal |
| CN103058200A (en) * | 2013-01-21 | 2013-04-24 | 昆明理工大学 | Method for external refining purification of industrial silicon melt |
| CN203159236U (en) * | 2013-01-21 | 2013-08-28 | 昆明理工大学 | Industrial silicon furnace external refining ladle adopting microwave heating |
| CN204550074U (en) * | 2015-02-05 | 2015-08-12 | 昆明理工大学 | A kind of industrial silicon melt refining induction converting furnace |
| CN207061882U (en) * | 2017-06-30 | 2018-03-02 | 昆明理工大学 | A kind of equipment of industrial silicon melt external refining purification |
Non-Patent Citations (3)
| Title |
|---|
| TSENG,TT,ET AL: "Refractory filler sands with core-shell composite structure for the taphole nozzle in slide-gate system of steel system", 《CERAMICS INTERNATIONAL》 * |
| 崔红卫: "冶金硅炉外精炼除磷的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 王杰: "2.5t硅包底吹气的优化研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113748086A (en) * | 2019-04-30 | 2021-12-03 | 瓦克化学股份公司 | Method for refining a crude silicon melt using a particulate mediator |
| CN113748086B (en) * | 2019-04-30 | 2024-02-06 | 瓦克化学股份公司 | Method for refining crude silicon melt using particulate mediator |
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