CN107630117B - Method for preparing ferrosilicon and calcium aluminate material by using thermal-state blast furnace slag - Google Patents
Method for preparing ferrosilicon and calcium aluminate material by using thermal-state blast furnace slag Download PDFInfo
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- CN107630117B CN107630117B CN201710743448.6A CN201710743448A CN107630117B CN 107630117 B CN107630117 B CN 107630117B CN 201710743448 A CN201710743448 A CN 201710743448A CN 107630117 B CN107630117 B CN 107630117B
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- 239000002893 slag Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000519 Ferrosilicon Inorganic materials 0.000 title claims abstract description 31
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 title claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 50
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000011812 mixed powder Substances 0.000 claims abstract description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 30
- 239000011707 mineral Substances 0.000 claims description 30
- 239000000126 substance Substances 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000002028 Biomass Substances 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000003723 Smelting Methods 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011575 calcium Substances 0.000 abstract description 3
- 229910052791 calcium Inorganic materials 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 239000003575 carbonaceous material Substances 0.000 abstract description 2
- RGKMZNDDOBAZGW-UHFFFAOYSA-N aluminum calcium Chemical compound [Al].[Ca] RGKMZNDDOBAZGW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 235000010755 mineral Nutrition 0.000 description 25
- 238000011084 recovery Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- SBEQWOXEGHQIMW-UHFFFAOYSA-N silicon Chemical compound [Si].[Si] SBEQWOXEGHQIMW-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for preparing ferrosilicon and calcium aluminate materials by using thermal-state blast furnace slag, which comprises the following steps of loading the thermal-state blast furnace slag into an ore-smelting furnace; uniformly mixing carbonaceous reducing agent powder, iron powder and alumina powder, and spraying the mixed powder into a submerged arc furnace through a hollow electrode by taking compressed air as a carrier; heating and preserving heat in a submerged arc furnace, naturally cooling, crushing and separating to obtain ferrosilicon and calcium aluminate. The invention uses the thermal state blast furnace slag to replace silica used in the conventional ferrosilicon smelting, uses the carbonaceous material as a reducing agent, the iron powder as an iron raw material and the alumina powder as a slagging agent to prepare the ferrosilicon and the aluminum calcium material, not only can fully recover the waste heat and calcium resources of the high-temperature thermal state blast furnace slag, but also greatly reduces the production cost of the ferrosilicon, and the calcium aluminate material can be used as ladle refining slag.
Description
Technical field
The present invention relates to metallurgical technology field more particularly to a kind of ferrosilicon and calcium aluminate material are prepared with thermal-state blast furnace slag
Method.
Background technique
Blast furnace slag is the waste residue generated in ironmaking processes, and main component is CaO, MgO, Al2O3、SiO2Deng at present to blast furnace
The processing of slag passes through water quenching mostly makes blast furnace slag become loose particles, as industrial cement, slag brick and slag concrete etc.
Raw materials for production.But Water Quenching technique will lead to the sensible heat contained in blast furnace slag and be largely lost, and recovery efficiency is low, and consume big
Measure new water resource.
Recycling problem for blast-furnace cement sensible heat is always one of iron and steel enterprise's focal point, big from thermal energy direction of recession
Cause can be divided into physics heat-exchange method and chemical recovery method.Physics heat-exchange method is to be handed over by certain energy carrier by heat
It brings and recycles its sensible heat, then secondary heat energy utilization is carried out to energy carrier, the disadvantage is that often existing in heat exchanging process a large amount of
Heat energy loss causes recuperation of heat utilization rate not high；It is " a kind of as disclosed in the Chinese patent of Patent No. CN201210089013.1
The efficient complementary energy recovery method of blast furnace slag and recyclable device ", Patent No. CN201210307176.2 Chinese patent disclosed in it is " high
Afterheat of slags power generator and electricity-generating method " etc..Chemical recovery method is turned generally by the high temperature of blast furnace cinder by chemistry
Sensible heat energy conversion is used the form of change for chemical energy, and energy carries out the opposite reduction of number of physical transformations, to make
Heat waste is reduced, as disclosed in the Chinese patent of Patent No. CN200610051148.3 " a kind of direct melting aluminium of mineral hot furnace, silicon,
The production method of ferroalloy ", Patent No. CN200910092390.9 Chinese patent disclosed in " it is a kind of using high-temperature steel slag or
The method that high temperature blast furnace slag and potassium feldspar prepare potash fertilizer ", Patent No. CN201110002236.5 Chinese patent disclosed in " one
Method that kind prepares ferrosilicon-titanium alloy using hot titanium-containing blast furnace slag " etc..There is the cold conditions object being added in the above chemical recovery method
Matter and thermal-state blast furnace slag mixing uniformity problem, and generally require to provide additional heat.
Domestic and international smelting duriron is mainly the single heat source smelting used using electric energy as heat source, is carried out continuously in mineral hot furnace
's.Mineral hot furnace is added portionwise in the furnace charge that silica, carbon and the iron powder of appropriate granularity are made into scale, under the action of electrode
Cold conditions furnace charge is set constantly to heat up melting, the fatal defects of this method are power consumption height, account for about the 70% of ferrosilicon production cost
More than.
Summary of the invention
The present invention provides a kind of methods for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag, with thermal-state blast furnace slag generation
Silica when for conventional ferrosilicon smelting, using carbonaceous material as reducing agent, iron powder be iron material, alumina powder is slag former, is come
Ferrosilicon and aluminium calcium material are prepared, the waste heat and calcium resource of high temperature thermal-state blast furnace slag can not only be sufficiently recycled, and is significantly dropped
Low-silicon iron production cost, calcium aluminate material can be used as ladle refining slag.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A method of ferrosilicon and calcium aluminate material being prepared with thermal-state blast furnace slag, is included the following steps:
1) powder is respectively prepared in carbonaceous reducing agent, aluminium oxide, thermal-state blast furnace slag is packed into mineral hot furnace；
2) electrode is coreless armature in mineral hot furnace, by the hollow passages of coreless armature and the compressed air for being used to convey powder
Piping connection is got up, and is carrier by mixed powder using compressed air after mixing by carbonaceous reducing agent powder, iron powder, alumina powder
Body is ejected into mineral hot furnace through coreless armature；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag 43%~
63%；Carbonaceous reducing agent powder 9.7%~14%；Iron powder 0.8%~31%；Alumina powder 15%~23%；
3) mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, and heat preservation for a period of time, is crushed after natural cooling and is separated to obtain the final product
Ferrosilicon and calcium aluminate.
The temperature range of the thermal-state blast furnace slag is 1300 DEG C~1650 DEG C；SiO in thermal-state blast furnace slag2Mass fraction not
Mass fraction less than 30%, MgO is not more than 8%.
The carbonaceous reducing agent is CDQ, coke, coal dust or biomass carbonization material, wherein fixed carbon mass fraction is not
Lower than 65%, ash content is not higher than 15%.
The granularity of the carbonaceous reducing agent powder is to account for 65% or more less than 100 mesh.
The mass fraction of metallic iron is greater than 90% in the iron powder.
Al in the alumina powder2O3Content is greater than 90%, and granularity is to account for 40% or more less than 100 mesh.
After the mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, soaking time is 1~3 hour.
Compared with prior art, the beneficial effects of the present invention are:
The reapective features of present invention combination blast furnace slag and ferrosilicon production process, using silica in blast furnace slag as preparing silicon
Silicon raw material when iron, while alumina powder slag former production aluminium calcium material is added, the waste heat of blast furnace slag is not only taken full advantage of, is saved
About ferrosilicon smelting when power consumption, wherein byproduct calcium aluminate material can be used for ladle refining slag；The above measure is greatly lowered
Ferrosilicon production cost, opens the new road that a blast furnace UTILIZATION OF VESIDUAL HEAT IN and silicon, calcium resource recycle inside iron and steel enterprise
Diameter.
Detailed description of the invention
Fig. 1 is a kind of process flow chart for the method that ferrosilicon and calcium aluminate material are prepared with thermal-state blast furnace slag of the present invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1, a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag of the present invention, including such as
Lower step:
1) powder is respectively prepared in carbonaceous reducing agent, aluminium oxide, thermal-state blast furnace slag is packed into mineral hot furnace；
2) electrode is coreless armature in mineral hot furnace, by the hollow passages of coreless armature and the compressed air for being used to convey powder
Piping connection is got up, and is carrier by mixed powder using compressed air after mixing by carbonaceous reducing agent powder, iron powder, alumina powder
Body is ejected into mineral hot furnace through coreless armature；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag 43%~
63%；Carbonaceous reducing agent powder 9.7%~14%；Iron powder 0.8%~31%；Alumina powder 15%~23%；
3) mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, and heat preservation for a period of time, is crushed after natural cooling and is separated to obtain the final product
Ferrosilicon and calcium aluminate.
The temperature range of the thermal-state blast furnace slag is 1300 DEG C~1650 DEG C；SiO in thermal-state blast furnace slag2Mass fraction not
Mass fraction less than 30%, MgO is not more than 8%.
The carbonaceous reducing agent is CDQ, coke, coal dust or biomass carbonization material, wherein fixed carbon mass fraction is not
Lower than 65%, ash content is not higher than 15%.
The granularity of the carbonaceous reducing agent powder is to account for 65% or more less than 100 mesh.
The mass fraction of metallic iron is greater than 90% in the iron powder.
Al in the alumina powder2O3Content is greater than 90%, and granularity is to account for 40% or more less than 100 mesh.
After the mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, soaking time is 1~3 hour.
Following embodiment is implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
Not mentionleting alone bright is conventional method.
[embodiment 1]
Carbonaceous reducing agent is first fabricated to powder by the way of being mechanically pulverized, granularity is to account for 75% less than 100 mesh,
Middle fixed carbon mass fraction is 72.3%, and ash content mass fraction is 13.4%.
Aluminium oxide is fabricated to powder using mechanical crushing mode, granularity is to account for 50% less than 100 mesh.
It is that 1450 DEG C of thermal-state blast furnace slags are packed into mineral hot furnace by temperature, SiO in thermal-state blast furnace slag2Mass fraction be
The mass fraction of 34.22%, MgO are 5.80%.
Electrodes in mine hot stove is coreless armature, the hollow passages with attachment device coreless armature and the pressure for conveying powder
Contracting air pipe line connects, after mixing by carbonaceous reducing agent powder, iron powder, alumina powder, will by carrier of compressed air
Mixed powder is ejected into mineral hot furnace through coreless armature；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag
58.6%；Carbonaceous reducing agent powder 13.03%；Iron powder (metallic iron mass fraction 96%) 7.20%；Alumina powder 21.17%.
Mineral hot furnace is warming up to 1750 DEG C, keeps the temperature 2.5 hours；In mineral hot furnace, upper layer is calcium aluminate material, and lower layer is ferrosilicon conjunction
Gold.Through broken and separation after Bai Ran is cooling, calcium aluminate and 60Si-Fe Antaciron block are obtained.In prepared calcium aluminate, mainly
Object is mutually C12A7 and a small amount of MgA1204.
[embodiment 2]
Carbonaceous reducing agent is first fabricated to powder by the way of being mechanically pulverized, granularity is to account for 85% less than 100 mesh,
Middle fixed carbon mass fraction is 83.3%, and ash content mass fraction is 11.4%.
Aluminium oxide is fabricated to powder using mechanical crushing mode, granularity is to account for 56% less than 100 mesh.
It is that 1550 DEG C of thermal-state blast furnace slags are packed into mineral hot furnace by temperature, SiO in thermal-state blast furnace slag2Mass fraction be
The mass fraction of 35.22%, MgO are 5.40%.
Electrodes in mine hot stove is coreless armature, the hollow passages with attachment device coreless armature and the pressure for conveying powder
Contracting air pipe line connects, after mixing by carbonaceous reducing agent powder, iron powder, alumina powder, will by carrier of compressed air
Mixed powder is ejected into mineral hot furnace through coreless armature；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag
43.8%；Carbonaceous reducing agent powder 9.75%；Iron powder (metallic iron mass fraction 95.9%) 30.5%；Alumina powder 15.95%.
Mineral hot furnace is warming up to 1800 DEG C, keeps the temperature 1.5 hours；In mineral hot furnace, upper layer is calcium aluminate material, and lower layer is ferrosilicon conjunction
Gold.Through broken and separation after Bai Ran is cooling, calcium aluminate and 15Si-Fe Antaciron block are obtained.In prepared calcium aluminate, mainly
Object is mutually CA and a small amount of MgA1204.
[embodiment 3]
Carbonaceous reducing agent is first fabricated to powder by the way of being mechanically pulverized, granularity is to account for 90% less than 100 mesh,
Middle fixed carbon mass fraction is 88.3%, and ash content mass fraction is 11.4%.
Aluminium oxide is fabricated to powder using mechanical crushing mode, granularity is to account for 58% less than 100 mesh.
It is that 1540 DEG C of thermal-state blast furnace slags are packed into mineral hot furnace by temperature, SiO in thermal-state blast furnace slag2Mass fraction be
The mass fraction of 36.45%, MgO are 6.55%.
Electrodes in mine hot stove is coreless armature, the hollow passages with attachment device coreless armature and the pressure for conveying powder
Contracting air pipe line connects, after mixing by carbonaceous reducing agent powder, iron powder, alumina powder, will by carrier of compressed air
Mixed powder is ejected into mineral hot furnace through coreless armature；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag
62.6%；Carbonaceous reducing agent powder 13.93%；Iron powder (metallic iron mass fraction 94.5%) 0.85%；Alumina powder 22.60%.
Mineral hot furnace is warming up to 1700 DEG C, keeps the temperature 3 hours；In mineral hot furnace, upper layer is calcium aluminate material, and lower layer is ferrosilicon conjunction
Gold.Through broken and separation after Bai Ran is cooling, calcium aluminate and 90Si-Fe Antaciron block are obtained.In prepared calcium aluminate, mainly
Object is mutually C12A7 and a small amount of MgA1204.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag, which comprises the steps of:
1) powder is respectively prepared in carbonaceous reducing agent, aluminium oxide, thermal-state blast furnace slag is packed into mineral hot furnace；
2) electrode is coreless armature in mineral hot furnace, by the hollow passages of coreless armature and the compressed air line for being used to convey powder
It connects, after mixing by carbonaceous reducing agent powder, iron powder, alumina powder, passes through mixed powder using compressed air as carrier
Coreless armature is ejected into mineral hot furnace；According to mass fraction meter, the proportion of each substance are as follows: thermal-state blast furnace slag 43%~63%；Carbon
Matter reducing agent powder 9.7%~14%；Iron powder 0.8%~31%；Alumina powder 15%~23%；
3) mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, and heat preservation for a period of time, is crushed and is separated ferrosilicon to obtain the final product after natural cooling
And calcium aluminate.
2. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In the temperature range of the thermal-state blast furnace slag is 1300 DEG C~1650 DEG C；SiO in thermal-state blast furnace slag2Mass fraction be not less than
The mass fraction of 30%, MgO are not more than 8%.
3. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In the carbonaceous reducing agent is CDQ, coke, coal dust or biomass carbonization material, wherein fixed carbon mass fraction is not less than
65%, ash content is not higher than 15%.
4. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In the granularity of the carbonaceous reducing agent powder is to account for 65% or more less than 100 mesh.
5. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In the mass fraction of metallic iron is greater than 90% in the iron powder.
6. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In Al in the alumina powder2O3Content is greater than 90%, and granularity is to account for 40% or more less than 100 mesh.
7. a kind of method for preparing ferrosilicon and calcium aluminate material with thermal-state blast furnace slag according to claim 1, feature exist
In after the mineral hot furnace is warming up to 1700 DEG C~1900 DEG C, soaking time is 1~3 hour.
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| CN115010170B (en) * | 2022-07-04 | 2023-09-22 | 重庆大学 | TiCl preparation by using titanium-containing blast furnace slag 4 Is a method of (2) |
| CN115820964A (en) * | 2022-12-08 | 2023-03-21 | 徐州宏阳新材料科技股份有限公司 | Device and method for preparing high-carbon ferrochrome through whole-powder ore smelting |
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| JPS58104151A (en) * | 1981-12-15 | 1983-06-21 | Minamikiyuushiyuu Kagaku Kogyo Kk | Manufacture of low-carbon ferromanganese |
| CN101126138A (en) * | 2007-10-01 | 2008-02-20 | 山西太钢不锈钢股份有限公司 | Method for smelting chromium-nickel-iron alloy from stainless steel dust-removing ash |
| CN102094096A (en) * | 2011-01-07 | 2011-06-15 | 武汉科技大学 | Method for preparing ferrosilicon-titanium with hot titanium-containing blast furnace slag |
| CN106676223A (en) * | 2016-11-21 | 2017-05-17 | 钢研晟华工程技术有限公司 | Method for producing iron alloy and refining slag through steel slag aluminothermic reduction |
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2017
- 2017-08-25 CN CN201710743448.6A patent/CN107630117B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58104151A (en) * | 1981-12-15 | 1983-06-21 | Minamikiyuushiyuu Kagaku Kogyo Kk | Manufacture of low-carbon ferromanganese |
| CN101126138A (en) * | 2007-10-01 | 2008-02-20 | 山西太钢不锈钢股份有限公司 | Method for smelting chromium-nickel-iron alloy from stainless steel dust-removing ash |
| CN102094096A (en) * | 2011-01-07 | 2011-06-15 | 武汉科技大学 | Method for preparing ferrosilicon-titanium with hot titanium-containing blast furnace slag |
| CN106676223A (en) * | 2016-11-21 | 2017-05-17 | 钢研晟华工程技术有限公司 | Method for producing iron alloy and refining slag through steel slag aluminothermic reduction |
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