CN110218836A - Method for dealuminizing and purifying ferrosilicon - Google Patents
Method for dealuminizing and purifying ferrosilicon Download PDFInfo
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- CN110218836A CN110218836A CN201910398524.3A CN201910398524A CN110218836A CN 110218836 A CN110218836 A CN 110218836A CN 201910398524 A CN201910398524 A CN 201910398524A CN 110218836 A CN110218836 A CN 110218836A
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- antaciron
- ferrosilicon
- liquid
- alloy
- furnace
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- 229910000519 Ferrosilicon Inorganic materials 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 238000007670 refining Methods 0.000 claims description 26
- 239000002893 slag Substances 0.000 claims description 25
- 230000006698 induction Effects 0.000 claims description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 22
- 238000000746 purification Methods 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052710 silicon Inorganic materials 0.000 abstract description 10
- 239000010703 silicon Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000013589 supplement Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 24
- 239000004411 aluminium Substances 0.000 description 21
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 229910017083 AlN Inorganic materials 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 229910001021 Ferroalloy Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- -1 aluminum silicon iron Chemical compound 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for dealuminizing and purifying ferrosilicon, which aims to reduce the use cost of alloy in the production process of enterprises, reduce the silicon burning loss in the dealuminizing and purifying process of the ferrosilicon alloy, improve the yield of the alloy, enhance the stable controllability of components in the dealuminizing and purifying process of the alloy, avoid alloy supplement in the later period and reduce the dealuminizing and purifying cost of the ferrosilicon alloy.
Description
Technical field
The invention belongs to alloys to purify refining art, more particularly to a kind of ferrosilicon dealuminzation method of purification.
Background technique
Antaciron is generally not required aluminum content as deoxidant for steelmaking and alloy addition.But smelting certain
When a little special steel grades, such as smelting silicon steel, cord steel, Properties of Heavy Rail Steel, there is strict demand to the aluminium content in ferrosilicon.Due to ferrosilicon
In process of production, a certain amount of aluminium is often brought into according to material quality difference, in particular by wollastonite and coke inferior
Charcoal then brings that aluminium is higher into, thus cause the ferrosilicon of the same trade mark because aluminum content has biggish price difference, such as commonly use siliceous
75% ferrosilicon is differed with its price containing aluminium 0.3% containing aluminium 2% about at 3000 yuan or so, and it is negative that price difference increases steel mill's cost
Load.In order to which the relatively cheap common ferrosilicon of price is transformed into the relatively expensive low aluminum silicon of price after dealuminzation purification processes
Iron, it usually needs dealumination treatment is carried out to common Antaciron by the way of external refining.Main method of refining includes chlorine
Change purifying method and oxidation refining method, but chlorination refining method causes serious pollution to the environment, cost of investment is high, gradually it is eliminated, and aoxidize essence
Refining method is easy to operate, and cost of investment is low, and environmental pollution is small, is used by many manufacturing enterprises.Its principle of oxidation refining method be
0 is added in ferrosilicon liquid2、Fe203Equal oxidants, the aluminium in ferrosilicon liquid is removed.Although the oxidizing process being capable of partial removal ferrosilicon liquid
Middle aluminium, but there is also certain deficiency, the 0 of addition2、Fe203Equal oxidants can also aoxidize the silicon in ferrosilicon liquid, ferrosilicon scaling loss compared with
Seriously, the ferrosilicon recovery rate after the purification of ferrosilicon dealuminzation is low, and generally 85% or so, and the Composition Control of final products is difficult,
The ferrosilicon for generally requiring to add the low aluminium of a certain amount of high-purity high silicon carrys out adjusting component, leads to that the production cost increases.
Summary of the invention
Expensive for the more common ferrosilicon of low aluminum silicon iron, the high status of enterprise's production cost and current ferrosilicon dealuminzation mention
It is pure mainly to remove aluminium by the mode that oxidant is added, lead to that the scaling loss of silicon in Antaciron is big and Composition Control is difficult etc. no
Foot, the present invention provide a kind of ferrosilicon dealuminzation method of purification, it is therefore intended that the use cost for reducing alloy in enterprise production process subtracts
Silicon scaling loss in few Antaciron dealuminzation purification process, improves yield of alloy, enhances the stabilization of alloy dealuminzation purification process ingredient
Controlling avoids the later period from adding alloy, reduces Antaciron dealuminzation cost for purification.
In order to realize goal of the invention, the technical solution adopted by the present invention is as follows:
A kind of its basic principle of ferrosilicon dealuminzation method of purification is as follows:
When being blown into nitrogen to high-temperature molten melt ferrosilicon, part nitrogen can be dissolved in ferrosilicon solution, and and Antaciron
Calorize symphysis in liquid is reacted as follows at aluminum nitride inclusions object:
N2=2 [N] (1)
[Al]+[N]=AlN (2)
The aluminium in Antaciron liquid is removed it is necessary to change system condition, promotes the progress of reaction (2).Pass through thermodynamics
Aluminum nitride particle will be precipitated it is found that when the concentration product of aluminium and nitrogen in Antaciron liquid reaches a certain level in analysis.In silicon
In ferroalloy liquid, if aluminium content is 2%, when nitrogen content in aluminium alloy is improved to 0.02%, the generation of (2) reaction
Aluminium nitride precipitation minimum temperature be 1583 DEG C.Therefore, the nitrogen point of dealuminzation effect and Antaciron liquid temperature, system
The use of pressure and refining slag is related, improves Antaciron liquid temperature by analysis, increases system nitrogen partial pressure, and low melting point is low viscous
Antaciron dealuminzation effect can be improved in the refining slag of degree.
A kind of ferrosilicon dealuminzation method of purification, it is characterised in that include the following steps:
Step 1: the Antaciron purified to dealuminzation being packed into induction heater, and is added the on Antaciron top
A kind of refining slag, additional amount are the 10~20% of weight alloy, keep alloy not exposed;
Step 2: carrying out induction heating to Antaciron makes its fusing, while passing through air brick to silicon in the bottom of induction furnace
Ferroalloy liquid is blown into nitrogen, and the amount of being blown into is by 5~20Nm3/ h control makes the area in rolling area in furnace account for liquid level 10~30% in furnace;
Step 3: reaching 2~5min when blowing time, after the air in induction heater is all discharged, in order to improve ferrosilicon
Nitrogen content in aluminium alloy buckles bell on the fire door of induction heater, is maintained at the pressure in furnace higher than outside atmosphere
Press the barotropic state of 0.01~0.05MPa;
Step 4: heating up to Antaciron liquid, the temperature of Antaciron liquid is controlled at 1600~1700 DEG C and kept
10~20min;
Step 5: opening bell, second of refining slag is added, additional amount is the 5~10% of weight alloy;
Step 6: slag to be refined is all after fusing, and bottom blown gas is adjusted to argon gas, and will the amount of being blown by 2~5Nm3/ h control
System carries out weak stir process to aluminium alloy;
Step 7: during weak stir process, reducing the heating power of electric induction furnace, 5~10 are implemented to Antaciron liquid
DEG C/min cooling, promote the nitrogen being dissolved in Antaciron liquid that combination reaction can occur with aluminium therein and forms aluminium nitride from silicon
It is precipitated in ferroalloy liquid, the aluminium nitride being precipitated under the weak stirring of argon gas enters in the refining slag of melting state, completes ferrosilicon
The dealuminzation of alloy;
Step 8: when the temperature of Antaciron liquid reaches higher than 30~50 DEG C of Antaciron fusing point, stop BOTTOM ARGON BLOWING, and
Top slag in furnace is removed completely.
The refining slag of the step 1, chemical composition comprises the following components in percentage by weight meet following range: 75%~85%
SiO2;10%~15% CaO;3%~5% Al2O3, surplus is alkali metal oxide, and alkali metal oxide includes
Li2O、Na2O、K2One or more in O, graininess are the hollow ball-shape of 2~5mm of diameter;
The refining slag of the step 5, chemical composition comprises the following components in percentage by weight meet following range: 60%~80%
CaF2;10%~30% CaO;10%~15% SiO2, graininess is that 50~100 mesh are powdered.
Using this method can get it is following the utility model has the advantages that 1) cheap common high ferro-silicon-aluminium can be transformed into price compared with
The alloy use cost of steel-making can be reduced by 10~20% by high low aluminum silicon iron;2) it can reduce because alloy strip aluminium generates
B class inclusion content, improve the cleanliness of steel grade;More other ferrosilicon dealuminzation methods of purification, this method can be avoided the scaling loss of ferrosilicon,
Greatly improve recovery rate, the ferrosilicon recovery rate after purification can reach 90% or more.
Specific embodiment
It is illustrated combined with specific embodiments below:
Embodiment 1
Dealuminzation purification processes are carried out by siliceous 75% ferrosilicon of this method to aluminum content 3%, method is as follows:
Step 1: the Antaciron purified to dealuminzation being packed into induction heater, and is added the on Antaciron top
A kind of refining slag, additional amount are the 12% of weight alloy, keep alloy not exposed;The SiO that refining slag is 80%2;12%
CaO;3.5% Al2O3, surplus Li2O, graininess are the hollow ball-shape of diameter 2.5mm;
Step 2: carrying out induction heating to Antaciron makes its fusing, while passing through air brick to silicon in the bottom of induction furnace
Ferroalloy liquid is blown into nitrogen, and the amount of being blown into is by 15Nm3/ h control makes the area in rolling area in furnace account for liquid level 18% in furnace;
Step 3: reaching 4min when blowing time, after the air in induction heater is all discharged, in induction heater
Bell is buckled on fire door, and the pressure in furnace is made to be maintained at the barotropic state higher than external pressure 0.03MPa:;
Step 4: heating up to Antaciron liquid, the temperature of Antaciron liquid is controlled at 1630 DEG C and keeps 15min.
Step 5: open bell:, second of refining slag is added, additional amount is the 8% of weight alloy;Refining slag is 70%
CaF2;20% CaO;10% SiO2, graininess is that 60 mesh are powdered.
Step 6: slag to be refined is all after fusing, and bottom blown gas is adjusted to argon gas, and will the amount of being blown by 3.5Nm3/ h control
System carries out weak stir process to aluminium alloy.
Step 7: during weak stir process, reduce the heating power of electric induction furnace, to Antaciron liquid implement 7 DEG C/
Min cooling promotes the nitrogen being dissolved in Antaciron liquid that combination reaction can occur with aluminium therein and forms aluminium nitride from ferrosilicon
It is precipitated in aluminium alloy, the aluminium nitride being precipitated under the weak stirring of argon gas enters in the refining slag of melting state, completes ferrosilicon and closes
The dealuminzation of gold.
Step 8: when the temperature of Antaciron liquid reaches higher than 40 DEG C of Antaciron fusing point, stopping BOTTOM ARGON BLOWING, and by furnace
Interior top slag removes completely;
Step 9: by treated, the casting of Antaciron liquid makes its solidification, and it is stand-by to be broken into block later.
By this method, the aluminium content of ferrosilicon can be reduced to 0.5%, and aluminium removal efficiency reaches 83%, and the ferrosilicon after purification closes
Golden recovery rate is 91%.
Embodiment 2
Dealuminzation purification processes are carried out by siliceous 75% ferrosilicon of this method to aluminum content 2%, method is as follows:
Step 1: the Antaciron purified to dealuminzation being packed into induction heater, and is added the on Antaciron top
A kind of refining slag, additional amount are the 15% of weight alloy, keep alloy not exposed;Its chemical component is by weight percentage are as follows:
75% SiO2;15% CaO;4.5% Al2O3, surplus Na2O, graininess are the hollow ball-shape of diameter 3mm;
Step 2: carrying out induction heating to Antaciron makes its fusing, while passing through air brick to silicon in the bottom of induction furnace
Ferroalloy liquid is blown into nitrogen, and the amount of being blown into is by 18Nm3/ h control makes the area in rolling area in furnace account for liquid level 15% in furnace;
Step 3: reaching 4.5min when blowing time, after the air in induction heater is all discharged, in induction heater
Fire door on buckle bell, so that the pressure in furnace is maintained at the barotropic state higher than external pressure 0.04MPa:;
Step 4: heating up to Antaciron liquid, the temperature of Antaciron liquid is controlled at 1650 DEG C and keeps 16min.
Step 5: open bell:, second of refining slag is added, additional amount is the 10% of weight alloy;Its chemical component
By weight percentage are as follows: 80% CaF2;15% CaO;5% SiO2, graininess is that 50 mesh are powdered.
Step 6: slag to be refined is all after fusing, and bottom blown gas is adjusted to argon gas, and will the amount of being blown by 3.0Nm3/ h control
System carries out weak stir process to aluminium alloy.
Step 7: during weak stir process, reduce the heating power of electric induction furnace, to Antaciron liquid implement 6 DEG C/
Min cooling promotes the nitrogen being dissolved in Antaciron liquid that combination reaction can occur with aluminium therein and forms aluminium nitride from ferrosilicon
It is precipitated in aluminium alloy, the aluminium nitride being precipitated under the weak stirring of argon gas enters in the refining slag of melting state, completes ferrosilicon and closes
The dealuminzation of gold.
Step 8: when the temperature of Antaciron liquid reaches higher than 45 DEG C of Antaciron fusing point, stopping BOTTOM ARGON BLOWING, and by furnace
Interior top slag removes completely;
Step 9: by treated, the casting of Antaciron liquid makes its solidification, and it is stand-by to be broken into block later.
By this method, the aluminium content of ferrosilicon can be reduced to 0.3%, and aluminium removal efficiency reaches 85%, and the ferrosilicon after purification closes
Golden recovery rate is 93%.
Claims (3)
1. a kind of ferrosilicon dealuminzation method of purification, it is characterised in that include the following steps:
The Antaciron purified to dealuminzation is packed into induction heater by step 1), and the first is added on Antaciron top
Refining slag, additional amount are the 10~20% of weight alloy, keep alloy not exposed;
Step 2), which carries out induction heating to Antaciron, makes its fusing, while being closed by air brick to ferrosilicon in the bottom of induction furnace
Golden liquid is blown into nitrogen, and the amount of being blown into is by 5~20Nm3/ h control makes the area in rolling area in furnace account for liquid level 10~30% in furnace;
Step 3) reaches 2~5min when blowing time, after the air in induction heater is all discharged, in order to improve Antaciron
Nitrogen content in liquid buckles bell on the fire door of induction heater, is maintained at the pressure in furnace higher than external pressure
The barotropic state of 0.01~0.05MPa;
Step 4) heats up to Antaciron liquid, the temperature of Antaciron liquid is controlled at 1600~1700 DEG C and keep 10~
20min;
Step 5) opens bell, and second of refining slag is added, and additional amount is the 5~10% of weight alloy;
Step 6) slag to be refined is all after fusing, and bottom blown gas is adjusted to argon gas, and will the amount of being blown by 2~5Nm3/ h control;
Step 7) reduces the heating power of electric induction furnace, implements 5~10 DEG C/min cooling to Antaciron liquid;
Step 8) stops BOTTOM ARGON BLOWING when the temperature of Antaciron liquid reaches higher than 30~50 DEG C of Antaciron fusing point, and by furnace
Interior top slag removes completely.
2. ferrosilicon dealuminzation method of purification according to claim 1, it is characterised in that the refining dreg chemistry of the step 1) at
Divide and meets following range: 75%~85% SiO by weight percentage2;10%~15% CaO;3%~5%
Al2O3, surplus is alkali metal oxide, and alkali metal oxide includes Li2O、Na2O、K2One or more in O,
Granular state is the hollow ball-shape of 2~5mm of diameter.
3. ferrosilicon dealuminzation method of purification according to claim 1, it is characterised in that the refining dreg chemistry of the step 5) at
Divide and meets following range: 60%~80% CaF by weight percentage2;10%~30% CaO;10%~15%
SiO2, graininess is that 50~100 mesh are powdered.
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CN111304523A (en) * | 2020-03-31 | 2020-06-19 | 西安宏信矿热炉有限公司 | Production process of low-aluminum ferrosilicon |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1430375A (en) * | 1972-09-07 | 1976-03-31 | Kloeckner Werke Ag | Process for the manufacture of low-carbon ferritic steel with a high chromium content |
JPH06264114A (en) * | 1993-03-11 | 1994-09-20 | Isuzu Motors Ltd | Production of thermoelectric material powder and apparatus for production thereof |
JPH09227236A (en) * | 1996-02-23 | 1997-09-02 | Nippon Steel Corp | Silicon nitride-base sintered compact and its production |
CN1190135A (en) * | 1997-12-17 | 1998-08-12 | 水利部丹江口水利枢纽管理局铁合金厂 | Production process of high-quality ferrosilicon |
CN101555011A (en) * | 2008-04-12 | 2009-10-14 | 于旭宏 | Silica reduction method for producing silicon |
CN110016557A (en) * | 2019-05-15 | 2019-07-16 | 东北大学 | The method for producing ferro-silicon-aluminium as raw material electric arc furnace smelting using aluminium ash |
-
2019
- 2019-05-14 CN CN201910398524.3A patent/CN110218836B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1430375A (en) * | 1972-09-07 | 1976-03-31 | Kloeckner Werke Ag | Process for the manufacture of low-carbon ferritic steel with a high chromium content |
JPH06264114A (en) * | 1993-03-11 | 1994-09-20 | Isuzu Motors Ltd | Production of thermoelectric material powder and apparatus for production thereof |
JPH09227236A (en) * | 1996-02-23 | 1997-09-02 | Nippon Steel Corp | Silicon nitride-base sintered compact and its production |
CN1190135A (en) * | 1997-12-17 | 1998-08-12 | 水利部丹江口水利枢纽管理局铁合金厂 | Production process of high-quality ferrosilicon |
CN101555011A (en) * | 2008-04-12 | 2009-10-14 | 于旭宏 | Silica reduction method for producing silicon |
CN110016557A (en) * | 2019-05-15 | 2019-07-16 | 东北大学 | The method for producing ferro-silicon-aluminium as raw material electric arc furnace smelting using aluminium ash |
Non-Patent Citations (2)
Title |
---|
张彦辉 等: "《造渣精炼去除硅铁合金中铝钙杂质研究》", 《铁合金》 * |
李小明 等: "《中频感应电炉精炼75%硅铁的试验研究》", 《铁合金》 * |
Cited By (1)
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CN111304523A (en) * | 2020-03-31 | 2020-06-19 | 西安宏信矿热炉有限公司 | Production process of low-aluminum ferrosilicon |
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