CN102071279B - Slag washing material for converter process production aluminum killed steel and preparation method thereof - Google Patents
Slag washing material for converter process production aluminum killed steel and preparation method thereof Download PDFInfo
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- CN102071279B CN102071279B CN201010597949A CN201010597949A CN102071279B CN 102071279 B CN102071279 B CN 102071279B CN 201010597949 A CN201010597949 A CN 201010597949A CN 201010597949 A CN201010597949 A CN 201010597949A CN 102071279 B CN102071279 B CN 102071279B
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- 239000002893 slag Substances 0.000 title claims abstract description 172
- 239000000463 material Substances 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 115
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 78
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910000655 Killed steel Inorganic materials 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 238000005406 washing Methods 0.000 title abstract 4
- 239000002994 raw material Substances 0.000 claims abstract description 104
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 8
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 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 5
- 239000000203 mixture Substances 0.000 claims description 96
- 239000003795 chemical substances by application Substances 0.000 claims description 54
- 230000002829 reductive effect Effects 0.000 claims description 53
- 239000000654 additive Substances 0.000 claims description 45
- 230000000996 additive effect Effects 0.000 claims description 45
- 239000004411 aluminium Substances 0.000 claims description 38
- 238000010891 electric arc Methods 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 23
- 239000011777 magnesium Substances 0.000 claims description 22
- 229910052700 potassium Inorganic materials 0.000 claims description 21
- 230000004927 fusion Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 18
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 17
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 16
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 14
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 14
- 239000004571 lime Substances 0.000 claims description 14
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 12
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052656 albite Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 238000009749 continuous casting Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 88
- 239000010959 steel Substances 0.000 description 88
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 239000010439 graphite Substances 0.000 description 17
- 229910002804 graphite Inorganic materials 0.000 description 17
- 230000000694 effects Effects 0.000 description 16
- 238000012856 packing Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000004927 clay Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a slag washing material for converter process production aluminum killed steel and a preparation method thereof, and belongs to the technical field of metallurgy. The slag washing material comprises the following components in percentage by weight: 30 to 60 percent of CaO, 20 to 45 percent of Al2O3, 0 to 15 percent of SiO2, 0 to 15 percent of MgO, 0 to 15 percent of Al, 0 to 5.02 percent of BaO, 0 to 2 percent of K2O, 0 to 25 percent of Na2O, 0.001 to 1 percent of Mg, 0 to 1 percent of Ca and the balance of impurities of which the content is less than 5 weight percent. The preparation method comprises the following steps of: uniformly mixing a Ca-containing raw material, an Al2O3-containing raw material and a reducer; putting a part of or all slag materials into a heating furnace, heating and melting; adding the remaining slag materials when remaining materials exist; melting and stopping electrification; cooling; and performing physical crushing. The prepared slag washing material has higher Al2O3 inclusion adsorption capacity, can guarantee smooth pouring of continuous casting, and has uniform components, low melting points and high slag forming speed.
Description
Technical field
Metallurgical technology field of the present invention, particularly a kind of bof process are produced aluminium killed steel with wash heat material and preparation method thereof.
Background technology
Along with the user requires being growing more intense of increasingly high and market competition to steel quality, seek the attention that efficient is higher, cost is lower smelting technology technology more and more receives domestic iron and steel enterprises in the steel smelting procedure.Carbon aluminium-killed steel is generally adopted " converter-LF refining-continuous casting " technical process both at home and abroad, this technology is long flow path not only, and there are certain problem in organization of production and management and running.
The LF refining process will consume slag making materials, refractory materials, Graphite Electrodes, Ar gas and electricity etc., causes resource, energy consumption big, problems such as cost height; And, also there is the carburetting of LF refining process in wherein part low-carbon (LC), low-silicon steel, increases problems such as silicon, after the LF refining, reduced the rate that is smelt of this type of steel; And only adopt the production of " converter-continuous casting " flow process, and ubiquity inclusion adsorption effect is poor, and continuous casting connects the problems such as the stove number is low, steel quality difference of watering.Therefore, these enterprises press for exploitation and can improve continuous casting to connect the new simple refinery practice water stove number and product made from steel quality technological.
In order to satisfy above-mentioned technical need; Developed a series of wash heat material and wash heat technology in recent years; Can partly substitute the LF refining furnace; The Chinese patent that is respectively ZL200910096625.1 and ZL200910096624.7 like the patent No. discloses a kind of general slag of heating that is used for converter steelmaking and has washed material and straight wash heat material and preparation method thereof and the method for use of going up of heating; The patent No. is that the Chinese patent of ZL200510038233.1 discloses deoxidation in steel making-wash heat-external refining with effective integrated slag and method of use; The patent No. is that the Chinese patent of ZL200810122755.3 discloses and contains outer " wash heat " desulfuration refining agent of BaO stove, and the patent No. is that the Chinese patent of ZL200710158648.1 discloses deslagging process of unrefined steel.
Above-mentioned patent generally adopts the part pre-melted slag, adopts the mode of mechanically mixing or pressure ball to use afterwards, and the wash heat material temperature of fusion of this dual mode production all is higher than pre-melted slag, and sludging time (being fusing time) is lower than pre-melted slag, and all has the part dust.
In addition, also contain C, paraffin, BaCO in the batching
3With fluorite etc., problem such as the ubiquity cigarette is big in the use, dust is big, fluorine-containing, contaminate environment.
Summary of the invention
To the problem that prior art exists, the present invention provides a kind of bof process to produce aluminium killed steel with wash heat material and preparation method thereof.
Bof process of the present invention is produced aluminium killed steel and is used wash heat material composition by weight percentage for containing CaO30 ~ 60%, Al
2O
320 ~ 45%, SiO
20 ~ 15%, MgO0 ~ 15%, Al0 ~ 15%, BaO 0 ~ 5.02%, K
2O 0 ~ 2%, Na
2O 0 ~ 25%, Mg0.001 ~ 1%, and Ca 0 ~ 1%, and surplus is an impurity, wherein the impurity weight content<5%.
The temperature of fusion of above-mentioned wash heat material is 800 ~ 1300 ℃.
The fusing time (sludging time) of above-mentioned wash heat material in the time of 1450 ℃ is at 1.5 ~ 20s.
Bof process production aluminium killed steel of the present invention carries out with the preparation method of wash heat material according to the following steps:
1, will contain the Ca raw material, contain Al
2O
3Raw material and reductive agent mix, and obtain mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.001 ~ 0.5:0.3 ~ 1.5; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 0 ~ 40% of a mixture gross weight;
2,1 ~ 100% of the slag charge gross weight that obtains is placed the process furnace heat fused after, when also having leftover materials, add remaining slag charge again, after whole slag charges fusings, stop energising, naturally cooling becomes the fritting slag charge, physics is broken then, obtains wash heat material product.
The above-mentioned Ca raw material that contains is selected lime or Wingdale for use.
Above-mentioned reductive agent is selected aluminum shot, aluminium powder, aluminium block, aluminium bits or AD powder for use.
The above-mentioned Al that contains
2O
3Raw material aluminium alumina, aluminum oxide powder or aluminium slag.
Above-mentioned additive is sodium oxide, potassium oxide, barium oxide, salt of wormwood, albite, potassium felspar sand, barium carbonate and/or sodium bicarbonate.
After in the aforesaid method slag charge being placed process furnace,, utilize the high temperature of electric arc that slag charge is fused into liquid, after the fusing of the slag charge in the process furnace, when keeping energising, add remaining slag charge to the process furnace energising starting the arc; The method that adds leftover materials is once to add whole leftover materials, add leftover materials or be divided into and repeatedly add leftover materials more than 2 batches continuously.
Above-mentioned process furnace is electric arc furnace, fused magnesium fusing furnace, melting corundum stove, changes slag hearth or the hot stove in ore deposit; Process furnace adopts Graphite Electrodes to heat.
In the aforesaid method, the mode that adds remaining slag charge is to adopt once to add or above at twice the adding.
The chemical reaction that takes place in the aforesaid method comprises following reaction
MgO+Al=Al
2O
3+Mg （1）
CaO+Al=Al
2O
3+Ca （2）
Ca, the Mg that the wash heat material of the present invention's preparation generates has part to stay in the slag, and when this slag charge was used for the STEELMAKING PRODUCTION process, metal A l and Ca or Mg can following reaction take place with O, the S in the steel:
Ca+[S]=CaS （3）
Ca+[O]=CaO （4）
Mg+[S]=MgS （5）
Mg+[O]=MgO （6）
2Al+3[O]=Al
2O
3 （7）
CaO in the slag also with steel in S have following reaction:
CaO+[S]=CaS+[O]（8）
Characteristics of the present invention are that this slag system has deoxidizing capacity preferably owing to there is the reaction of (4), (6), (7), owing to there is the reaction of above-mentioned (3), (5), (8), this wash heat material also has sweetening power preferably simultaneously.
Wherein Al uses as reductive agent and heat-generating agent, reaches when reducing slag oxidation property, also utilizes thermopositive reaction (2Al+3O=Al
2O
3) the liberated heat temperature drop that slag charge that the compensation tapping process adds causes because of heat absorption in melting process that generates heat; Wash heat material of the present invention is floride-free slag system, the non-environmental-pollution problem.
In addition, in tapping process, add this wash heat material after because the Ca that the reaction of reaction formula (2) generates plays Al in the steel
2O
3Inclusion and sulfide carry out the effect of denaturing treatment, therefore, have solved the Al that generates in the invar in the casting process preferably in this wash heat material use
2O
3The nozzle clogging problem that inclusion etc. cause has guaranteed the smooth cast of continuous casting.
The main phase composite of wash heat material of the present invention's preparation is low-melting mCaOnAl
2O
3, because mCaOnAl
2O
3With Al
2O
3IT between inclusion is little, has to adsorb Al preferably
2O
3The ability of inclusion reduces the Al in the steel significantly
2O
3Inclusion also helps to solve continous casting sprue dross problem, guarantees the smooth cast of continuous casting.
When the pre-melted slag material granularity is thin,, can avoid occurring dust pollution question with sifting out fine powder after the fragmentation of fritting slag charge less than 1 ~ 2mm.
Wash heat material of the present invention is owing to be whole fritting material, and composition is even, and fusing point is low, and fusing time is short.In factory's use, can guarantee sequence casting process continous casting sprue non-nodulating, water the stove number thereby make steel mill's casting process obtain higher company.
Embodiment
The aluminium block that adopts in the embodiment of the invention, aluminum shot, aluminium powder, aluminium bits, AD powder, sodium oxide, albite, lime and Wingdale are the general industry product.
The aluminium slag that adopts in the embodiment of the invention is a general industry aluminium slag.
The bauxitic clay and the aluminum oxide powder that adopt are the general industry product.
The equipment of measuring temperature of fusion and fusing time (sludging time) in the embodiment of the invention is LZ-III type slag pre-arcing characterisitics determinator.
Wash heat material product in the embodiment of the invention is as shown in table 1 in steel mill's result of use
Table 1
Embodiment 1
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminum shot, the Al that selects for use
2O
3Raw material is a bauxitic clay, and the additive of selecting for use such as is at a quality blended potassium oxide;
The process furnace that adopts is an electric arc furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.05:0.45; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 1% of a mixture gross weight;
The slag charge of weight percent 40% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 4 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 35mm, sift out fine powder less than 1mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, the processing steel grade is SPHC, add-on 3kg/t steel; 1619 ℃ of tapping back liquid steel temperatures; No flue dust occurs in the adition process, and the dross phenomenon does not appear in the mouth of a river, and steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO59.3%, Al
2O
321.7%, SiO
26.1%, MgO3.6%, Al 6.5%, BaO0.01%, K
2O0.013%, Na
2O0.52%, Mg 0.003%, and Ca 0.0011%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1212 ℃.The sludging time 10s of wash heat material in the time of 1450 ℃.
Embodiment 2
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is aluminium bits, and that selects for use contains Al
2O
3Raw material is an aluminum oxide powder, and the additive of selecting for use is an albite;
The process furnace that adopts is the melting corundum stove;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.011:1.43; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 8% of a mixture gross weight;
The slag charge of weight percent 25% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 5 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 75mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO42.5%, Al
2O
334.3%, Al 0.021%, SiO
20.9%, K
2O 0.021%, Na
2O 2.87%, BaO0.034%, and MgO10.3%, Mg 0.0012%, and surplus is a foreign matter content;
The temperature of fusion of wash heat material is 1140 ℃.The sludging time of wash heat material in the time of 1450 ℃ is 8s.
Embodiment 3
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is the AD powder, and that selects for use contains Al
2O
3Raw material is a bauxitic clay, and the additive of selecting for use is a salt of wormwood;
The process furnace that adopts is the electrosmelted magnesite clinker smelting furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.09:0.84, the add-on of additive is 0.05% of a mixture gross weight.Mix the back and obtain slag charge;
The slag charge of weight percent 20% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, add remaining slag charge continuously; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 40mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO47.5%, Al
2O
333.1%, SiO
29.2%, MgO7.3%, Al 1.7%, Mg0.3%, Na
2O0.004%, K
2O 0.001%, BaO0.0034%, and surplus is an impurity weight;
The temperature of fusion of wash heat material is 1132 ℃.The sludging time of wash heat material in the time of 1450 ℃ is 12s.
Embodiment 4
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminium block, and that selects for use contains Al
2O
3Raw material is the aluminium slag, and the additive of selecting for use is a sodium oxide;
The process furnace that adopts is the customizations slag hearth;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.01:0.81; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 40% of a mixture gross weight;
The slag charge of weight percent 17% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 8 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 25mm, sift out fine powder less than 2mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO31.2%, Al
2O
323.9%, SiO
28.2%, Al5.18%, K
2O0.001%, Na
2O20.5%, MgO8.01%, Mg 0.04%, Ca0.24%, surplus is a foreign matter content;
The temperature of fusion of wash heat material is 817 ℃.The sludging time of wash heat material in the time of 1450 ℃ is 1.5s.
Embodiment 5
The Ca raw material of selecting for use that contains is a Wingdale, and the reductive agent of selecting for use is aluminium bits, and that selects for use contains Al
2O
3Raw material is a bauxitic clay, and the additive of selecting for use is a barium oxide;
The process furnace that adopts is an electric arc furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.3:0.54.In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 2% of a mixture gross weight;
The slag charge of weight percent 5% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 10 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 60mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO31.3%, Al
2O
327.9%, SiO
25.2%, MgO11.3%, Al 19.9%, K
2O0.032%, Ba
2O0.34%, Mg 0. 4%, Ca0.34%, Na
2O0.0001%, surplus is a foreign matter content;
The temperature of fusion of wash heat material is 1287 ℃.The sludging time of wash heat material in the time of 1450 ℃ is 16s.
Embodiment 6
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminium powder, and that selects for use contains Al
2O
3Raw material is a bauxitic clay, and additive is a barium carbonate;
The process furnace that adopts is the hot stove in ore deposit;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.001:0.85.In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 1% of a mixture gross weight;
The slag charge of weight percent 25% is placed process furnace, the process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc, utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, add remaining slag charge continuously; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 35mm, sift out fine powder less than 2mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO50.4%, Al
2O
331.3%, SiO
26.1%, MgO10.3%, K
2O0.012%, Ba
2O0.004%, Mg 0.014%, Ca0.27%, surplus is a foreign matter content;
The temperature of fusion of wash heat material is 1294 ℃.The sludging time of wash heat material in the time of 1450 ℃ is 20s.
Embodiment 7
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminium powder, the Al that selects for use
2O
3Raw material is the aluminium slag, and the additive of selecting for use is a barium carbonate;
The process furnace that adopts is an electric arc furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.1:1; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 5% of a mixture gross weight;
The slag charge of weight percent 1% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 15 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 65mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO59.7%, Al
2O
324.2%, SiO
24.4%, MgO3.3%, Al 5.31%, BaO1.3%, K
2O0.003%, Na
2O0.005%, Mg 0.004%, and Ca 0.003%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1034 ℃.The sludging time 19s of wash heat material in the time of 1450 ℃.
Embodiment 8
The Ca raw material of selecting for use that contains is a Wingdale, and the reductive agent of selecting for use is the aluminium bits, the Al that selects for use
2O
3Raw material is an aluminum oxide powder, and the additive of selecting for use is a sodium bicarbonate;
The process furnace that adopts is the hot stove in ore deposit;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.2:0.43; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 4% of a mixture gross weight;
The slag charge of percentage by weight 10% is placed heating furnace; The heating furnace of described heating furnace for heating through graphite electrode; To the heating furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the heating furnace, when keeping energising, add remaining slag charge continuously; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, be cooled to the fritting slag charge naturally; Based on steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 35mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill based on steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO40.9%, Al
2O
338.2%, SiO
23.1%, MgO0.1%, Al 15%, BaO0.002%, K
2O0.003%, Na
2O1.25%, Mg 0.008%, and Ca 0.001%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1042 ℃.The sludging time 6s of wash heat material in the time of 1450 ℃.
Embodiment 9
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminum shot, the Al that selects for use
2O
3Raw material is an aluminum oxide powder, and the additive of selecting for use is a potassium felspar sand;
The process furnace that adopts is for changing slag hearth;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.15:0.85; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 3% of a mixture gross weight;
The slag charge of weight percent 3% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 10 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 100mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO48.8%, Al
2O
340.1%, SiO
20.013%, MgO1.24%, Al 5.73%, BaO0.001%, K
2O0.21%, Na
2O0.002%, Mg 0.003%, and Ca 0.002%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1147 ℃.The sludging time 13s of wash heat material in the time of 1450 ℃.
Embodiment 10
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is the aluminium bits, the Al that selects for use
2O
3Raw material is the aluminium slag, and the additive of selecting for use is a barium carbonate;
The process furnace that adopts is an electric arc furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.1:0.9; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 3% of a mixture gross weight;
The slag charge of weight percent 7% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 9 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 35mm, sift out the part of granularity less than 1mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO47.4%, Al
2O
325.6%, SiO
211.8%, MgO6.6%, Al 5.33%, BaO0.94%, K
2O0.002%, Na
2O0.003%, Mg 0.002%, and Ca 0.004%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 821 ℃.The sludging time 17s of wash heat material in the time of 1450 ℃.
Embodiment 11
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is the AD powder, the Al that selects for use
2O
3Raw material is an aluminum oxide powder, and the additive of selecting for use is a sodium oxide;
The process furnace that adopts is the hot stove in ore deposit;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.4:1; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 20% of a mixture gross weight;
The slag charge of weight percent 20% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 3 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 55mm, sift out the part of granularity less than 1mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO33.6%, Al
2O
344.9%, SiO
25.01%, MgO2.8%, Al 3.25%, BaO0.004%, K
2O0.003%, Na
2O9.3%, Mg 0.005%, and Ca 0.001%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1148 ℃.The sludging time 19s of wash heat material in the time of 1450 ℃.
Embodiment 12
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminium block, the Al that selects for use
2O
3Raw material is a bauxitic clay, and the additive of selecting for use is a potassium felspar sand;
The process furnace that adopts is the melting corundum stove;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.05:0.35; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 12% of a mixture gross weight;
Whole slag charges are placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes to the process furnace energising starting the arc, utilizes the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point; All after the slag charge fusing; Stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 30mm, sift out the part of granularity less than 1mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO58.4%, Al
2O
320.2%, SiO
211.4%, MgO5.1%, Al 1.64%, BaO0.002%, K
2O1.41%, Na
2O0.004%, Mg 0.003%, and Ca 0.001%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1032 ℃.The sludging time 13s of wash heat material in the time of 1450 ℃.
Embodiment 13
The Ca raw material of selecting for use that contains is a lime, and the reductive agent of selecting for use is an aluminum shot, the Al that selects for use
2O
3Raw material is the aluminium slag, and the additive of selecting for use is a barium carbonate;
The process furnace that adopts is the fused magnesium fusing furnace;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.12:0.88; In mixture, add additive then, mix the back and obtain slag charge, the add-on of additive is 7% of a mixture gross weight;
The slag charge of weight percent 17% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, be divided into 12 batches and add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 60mm, obtain the wash heat material; Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO45.5%, Al
2O
326.8%, SiO
29.5%, MgO5.9%, Al 5.93%, BaO1.72%, K
2O0.005%, Na
2O0.003%, Mg 0.001%, and Ca 0.002%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 1158 ℃.The sludging time 17s of wash heat material in the time of 1450 ℃.
Embodiment 14
The Ca raw material of selecting for use that contains is a Wingdale, and the reductive agent of selecting for use is the aluminium bits, the Al that selects for use
2O
3Raw material is an aluminum oxide powder;
The process furnace that adopts is for changing slag hearth;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.2:0.5;
The slag charge of weight percent 80% is placed process furnace; The process furnace of described process furnace for heating through Graphite Electrodes; To the process furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the process furnace, when keeping energising, once add remaining slag charge; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, naturally cooling becomes the fritting slag charge; According to steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 65mm, sift out the part of granularity less than 1mm, obtain the wash heat material.Deliver to the use of confession steel mill of steel mill according to steel mill's buying standard-required packing then, steel mill's practical effect sees attached list 1;
Wash heat material composition is by weight percentage for containing CaO40.3%, Al
2O
340.2%, SiO
20.8%, MgO0.9%, Al 14.9%, K
2O0.001%, Na
2O0.001%, Mg 0.01%, and Ca 0.05%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 978 ℃.The sludging time 12s of wash heat material in the time of 1450 ℃.
Embodiment 15
The Ca raw material of selecting for use that contains is a Wingdale, and the reductive agent of selecting for use is the AD powder, the Al that selects for use
2O
3Raw material is the aluminium slag;
The process furnace that adopts is the hot stove in ore deposit;
To contain Ca raw material, reductive agent and contain Al
2O
3Raw materials mix mixes the back and obtains mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.2:1;
The slag charge of percentage by weight 25% is placed heating furnace; The heating furnace of described heating furnace for heating through graphite electrode; To the heating furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid under the condition that is higher than the material fusing point, after the fusing of the slag charge in the heating furnace, add remaining slag charge 3 batches of the same time-divisions that keeps energising; All after the slag charge fusing, stop energising, the slag charge of fusing is poured out, be cooled to the fritting slag charge naturally; Based on steel mill's buying standard-required, again wash heat material physics is crushed to granularity below 45mm, obtain the wash heat material;
Wash heat material composition is by weight percentage for containing CaO30.4%, Al
2O
334.4%, SiO
213.5%, MgO7%, Al 12.6%, K
2O0.001%, Na
2O0.004%, Mg 0.005%, and Ca 0.003%, and surplus is impurity S, P, FeO etc.;
The temperature of fusion of wash heat material is 978 ℃.The sludging time 12s of wash heat material in the time of 1450 ℃.
Claims (5)
1. a bof process is produced aluminium killed steel and is used the wash heat material, and the composition that it is characterized in that the wash heat material is by weight percentage for containing CaO30 ~ 60%, Al
2O
320 ~ 45%, SiO
20 ~ 15%, MgO0.1 ~ 15%, Al0.021 ~ 15%, BaO 0.001 ~ 5.02%, K
2O0.001 ~ 2%, Na
2O 0.0001 ~ 25%, Mg0.001 ~ 1%, and Ca 0.001 ~ 1%, and surplus is a weight content<5% impurity, the temperature of fusion of wash heat material are 800 ~ 1300 ℃, and the fusing time in the time of 1450 ℃ is at 1.5 ~ 20s.
2. the described bof process of claim 1 is produced the preparation method of aluminium killed steel with the wash heat material, it is characterized in that carrying out according to the following steps:
(1) will contain the Ca raw material, contain Al
2O
3Raw material and reductive agent mix, and obtain mixture, and configuration proportion is by weight for containing the Ca raw material: reductive agent: contain Al
2O
3Raw material=1:0.001 ~ 0.5:0.3 ~ 1.5; In mixture, add additive then; Mix the back and obtain slag charge; Described additive is the earth alkali metal additive: sodium oxide, potassium oxide, barium oxide, salt of wormwood, albite, potassium felspar sand, barium carbonate and/or sodium bicarbonate, the add-on of additive are 1 ~ 40% of mixture gross weight;
(2) 1 ~ 100% of the slag charge gross weight that obtains is placed the process furnace heat fused after, when also having leftover materials, add remaining slag charge again, after whole slag charges fusings, stop energising, naturally cooling becomes the fritting slag charge, physics is broken then, obtains the wash heat material.
3. bof process according to claim 2 is produced the preparation method of aluminium killed steel with the wash heat material, it is characterized in that the described Ca of containing raw material selects lime or Wingdale for use, and described reductive agent is selected aluminum shot, aluminium powder, aluminium block, aluminium bits or AD powder, the described Al that contains for use
2O
3Raw material aluminium alumina, aluminum oxide powder or aluminium slag.
4. produce the preparation method of aluminum killed steel based on the described bof process of claim 2 with the wash heat material; After it is characterized in that slag charge placed heating furnace; To the heating furnace energising starting the arc; Utilize the high temperature of electric arc that slag charge is fused into liquid, after the fusing of the slag charge in the heating furnace, when keeping energising, add remaining slag charge; The method that adds leftover materials is once to add whole leftover materials, add leftover materials or be divided into and repeatedly add leftover materials more than 2 batches continuously.
5. bof process according to claim 2 is produced the preparation method of aluminium killed steel with the wash heat material, it is characterized in that described process furnace is electric arc furnace, fused magnesium fusing furnace, melting corundum stove, changes slag hearth or the hot stove in ore deposit.
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| CN102296149A (en) * | 2011-08-02 | 2011-12-28 | 江苏省沙钢钢铁研究院有限公司 | Fluorine-free high efficiency desulphurization refining slag system for low carbon aluminum killed steel |
| CN102719608A (en) * | 2012-03-29 | 2012-10-10 | 鞍钢股份有限公司 | Temperature compensation method for molten steel in steel ladle |
| CN103243197B (en) * | 2013-05-13 | 2014-12-31 | 涟源市飞达冶金炉料厂 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
| CN103233098B (en) * | 2013-05-13 | 2016-01-20 | 涟源市飞达冶金炉料厂 | A kind of straight upper using method of wash heat mixing material in converter tapping |
| CN105132630B (en) * | 2015-09-24 | 2017-09-15 | 河南通宇冶材集团有限公司 | It is a kind of to be used for electric furnace, composite slag lotion of converter and preparation method thereof |
| CN105624365B (en) * | 2016-03-29 | 2017-08-11 | 马鞍山市兴达冶金新材料有限公司 | A kind of alkaline earth oxide is combined molten steel refining agent and preparation method thereof |
| CN110804685A (en) * | 2019-12-05 | 2020-02-18 | 唐山瑞丰钢铁（集团）有限公司 | Slag washing and refining process for tapping of converter |
| CN111020099B (en) * | 2019-12-16 | 2021-11-09 | 唐山钢铁集团有限责任公司 | Process for continuously casting straight-up medium-thin sheet billet of steel converter for low-carbon cold-rolled base material |
| CN111230054B (en) * | 2020-03-11 | 2021-04-06 | 柳州钢铁股份有限公司 | Method for cleaning slag adhered to bottom of steel ladle |
| CN113416815A (en) * | 2021-06-18 | 2021-09-21 | 江苏润美新材料有限公司 | Synthetic slag for aluminum killed steel direct slag-feeding washing desulfurization process and production process and equipment thereof |
| CN114592105B (en) * | 2022-03-17 | 2023-04-07 | 广东韶钢松山股份有限公司 | Control method of deformed steel bar acid-soluble aluminum |
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