CN117418104A - Preparation method and application of molybdenum-containing steel molybdenum alloying raw material - Google Patents
Preparation method and application of molybdenum-containing steel molybdenum alloying raw material Download PDFInfo
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 93
- 239000011733 molybdenum Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000002994 raw material Substances 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000005275 alloying Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 51
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 27
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 21
- 239000000292 calcium oxide Substances 0.000 claims abstract description 21
- 238000005245 sintering Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000019738 Limestone Nutrition 0.000 claims abstract description 14
- 239000006028 limestone Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000010079 rubber tapping Methods 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 1
- 238000003723 Smelting Methods 0.000 abstract description 11
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 10
- 238000009628 steelmaking Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000005453 pelletization Methods 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 15
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000011028 pyrite Substances 0.000 description 3
- 229910052683 pyrite Inorganic materials 0.000 description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 235000010333 potassium nitrate Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a preparation method and application of a molybdenum-containing steel molybdenum alloying raw material, and belongs to the field of steelmaking material preparation. Mixing iron ore powder, molybdenum ore powder, quicklime, limestone powder and coke powder according to a certain proportion; the mixed materials are put into a roller pelletizer for further uniform mixing and pelletization; sintering the prepared mixture on a sintering machine; cooling, crushing and sieving to obtain the molybdenum-containing steel molybdenum alloying raw material. The molybdenum alloying raw material is fed into a converter bunker, and is added after deoxidizing agents such as aluminum blocks and the like are added in the tapping process of the converter, so that the molybdenum yield is higher. The invention utilizes the existing sintering equipment of a steel mill and the easily obtained raw materials such as iron ore powder, limestone powder and the like, can realize the high-efficiency and low-energy-consumption preparation of the molybdenum-containing raw materials, and the generated sulfur dioxide flue gas can be recycled through the existing sintering desulfurization equipment. The prepared molybdenum-containing raw material is used in the molybdenum alloying process of molybdenum-containing steel, the molybdenum yield is high, and the smelting period is not influenced.
Description
Technical Field
The invention relates to the field of steelmaking material preparation, in particular to a preparation method and application of a molybdenum-containing steel molybdenum alloying raw material.
Background
The molybdenum element and other alloy elements act together to improve the strength, hardness and corrosion resistance of steel materials, and the molybdenum element and other alloy elements are common alloy elements in alloy steel.
In nature, mo is mainly present in the form of molybdenite, and has a chemical formula of MoS 2 . At present, ferromolybdenum is mainly used as an alloying raw material in the smelting of molybdenum-containing steel. However, ferromolybdenum is expensive, the energy consumption in the production process is high, and the pollution is serious. Currently, the ferromolybdenum production mainly adopts an off-furnace method, which is also called a silicon aluminothermic method. The process uses molybdenum concentrate (MoS 2 ) And (3) oxidizing and roasting the raw materials in a multi-hearth furnace to obtain roasted molybdenum ore with the mass fraction of S less than 0.07%. Ferrosilicon and a small amount of metallic aluminum are used as reducing agents, steel scraps (or iron scales, iron scales and the like) are used as supplementary sources of iron materials in the alloy, saltpeter is used as a heat supplementing agent, fluorite is used as a flux, and the ferrosilicon and the roasted molybdenum ore are mixed according to a certain proportion and are put into a furnace for smelting. The standard ferromolybdenum unit consumption for smelting 1 ton of 55% Mo in the process is as follows: 1213kg of molybdenum ore (calculated by 45% mo, recovery rate of molybdenum 98.33%); 339-350 kg of ferrosilicon; 250kg of iron and phosphorus; 260-270 kg of steel scraps; 45-60 kg of aluminum particles; 30kg of fluorite; 40kg of Sal Nitri. Meanwhile, a large amount of smoke dust and NOX gas are generated during the production of ferromolybdenum, and cancerogenic substances such as Al particles, saltpeter, ferrosilicon and the like are associated.
The main component of the molybdenum concentrate is MoS 2 The sulfur content of the steel is up to more than 30%, and the steel can be directly used for steelmaking, so that the sulfur content of the molten steel is seriously out of standard. Some domestic manufacturers or scholars have studied the process of directly alloying molybdenum by using industrial molybdenum trioxide instead of ferromolybdenum. The industrial molybdenum trioxide is obtained by roasting molybdenum concentrate, sulfur dioxide released in the roasting process threatens the ecological environment, and the concentration of sulfur dioxide in the flue gas after roasting is low, so that the concentration of directly produced acid is insufficient, and the recovery cost is high. In addition, the process removes sulfur and brings oxygen, ferrosilicon, metallic aluminum and the like are used as reducing agents for reduction, and a mode of oxidation and then reduction is adopted. The main component of the iron ore powder is Fe 2 O 3 For the traditional iron and steel smelting process, iron oreThe main flow of the iron element in the powder entering the steel is as follows: sintering or pelletizing, blast furnace ironmaking (carbon reduction) and converter steelmaking (oxygen blowing to remove redundant carbon in molten iron), wherein the process belongs to reduction and oxidation.
Chinese patent CN112210635a discloses a method for preparing ferromolybdenum by using molybdenum concentrate and pyrite, wherein the ferromolybdenum is prepared by smelting the molybdenum concentrate and pyrite under vacuum high temperature condition, the principle is that the molybdenum concentrate and pyrite are directly decomposed under high temperature and vacuum condition to generate ferromolybdenum alloy and sulfur vapor, and the reaction condition and equipment requirements are strict.
Chinese patent CN106916939a discloses a method for preparing ferromolybdenum smelting burden, which uses molybdenum ore powder, iron powder, carbon powder and binder, and sintering the ferromolybdenum smelting burden by a sintering machine. The prepared product is ferromolybdenum smelting furnace burden, can not be directly used for steelmaking production, and molybdenum concentrate is only physically changed in the sintering process, so that the production process of ferromolybdenum is essentially optimized.
In order to solve the technical problems, the application provides a preparation method and a use process of a molybdenum-containing raw material which can be directly used for steelmaking alloying, wherein the preparation method of the molybdenum-containing raw material changes the chemical reaction process of oxidation and then reduction in the traditional ferromolybdenum production flow, and molybdenum concentrate is sintered with iron ore powder, and meanwhile, part of oxygen in sulfur and iron ore powder in the molybdenum concentrate is removed. The invention has simple process, high efficiency and low energy consumption.
Disclosure of Invention
The invention aims to provide a preparation method and application of a molybdenum-containing steel molybdenum alloying raw material. The molybdenum-containing raw material prepared by the method can be directly used as an alloying raw material for producing molybdenum-containing steel, and has the advantages of simple preparation process, high efficiency and low energy consumption.
Specifically, the invention provides a preparation method of a molybdenum-containing steel molybdenum alloying raw material, which comprises the following specific steps:
(1) Premixing iron ore powder, molybdenum ore powder, quicklime, limestone powder and coke powder according to a certain proportion;
(2) The mixed materials are put into a roller pelletizer to be further mixed evenly and pelletized, and the granularity range is 3 mm-8 mm;
(3) Sintering the prepared mixed material on a sintering machine;
(4) And cooling the sintered raw materials, and crushing and screening.
Wherein, in the step (1), the proportion of each material is as follows: 30-50% of iron ore powder, 20-30% of molybdenum ore powder, 5-15% of quicklime, 18-23% of limestone powder and 4-10% of coke powder.
In the step (1), the iron ore powder comprises TFe more than or equal to 55 percent and SiO 2 Less than or equal to 8%, less than or equal to 5% of CaO, less than or equal to 5% of burning loss, and 3-8 mm of granularity; molybdenum ore powder components of 45% -50% of Mo, less than or equal to 0.03% of P and less than or equal to 0.40% of Cu; the CaO of the quicklime is more than or equal to 80 percent, and the granularity is less than or equal to 3mm; limestone powder CaO is more than or equal to 50 percent, and the granularity is less than or equal to 3mm; the granularity of the coke powder is 1 mm-3 mm.
And (3) uniformly mixing and granulating for 10 minutes in the step (2), wetting the uniformly mixed material by atomized water, wherein the water content of the uniformly mixed material is 8.0%.
In the step (3), the thickness of the cloth is 700mm, the ignition temperature is 980 ℃, the ignition negative pressure is 7-9 kPa, and the ignition time is 2min.
And (3) crushing and screening the materials in the step (4) to obtain the particles with the particle size of 10-50 mm.
The invention also provides application of the molybdenum-containing steel molybdenum alloying raw material, in particular to feeding the prepared molybdenum alloying raw material into a converter bin, wherein the time for adding the raw material is as follows: in the tapping process of the converter, deoxidizing agents such as aluminum blocks and the like are added.
The invention provides a method for preparing a molybdenum-containing raw material, which is based on the principle that molybdenum concentrate reacts with iron ore powder to generate ferric molybdate and sulfur dioxide. The process simultaneously removes sulfur in the molybdenum concentrate and a part of oxygen in the iron ore powder, and greatly shortens the flow of molybdenum and iron into molten steel. The quicklime, limestone powder and part of iron ore powder are used as nucleating agent and binder, and the coke powder is used as fuel for sintering ignition.
The invention utilizes the existing sintering equipment of a steel mill and the easily obtained raw materials such as iron ore powder, limestone powder and the like, can realize the high-efficiency and low-energy-consumption preparation of the molybdenum-containing raw materials, and the generated sulfur dioxide flue gas can be recycled through the existing sintering desulfurization equipment. The prepared molybdenum-containing raw material can be directly used in the molybdenum alloying process of molybdenum-containing steel, the molybdenum yield is high, and the smelting period is not influenced.
Detailed Description
The following specifically describes the preparation method and the use process of the molybdenum-containing steel molybdenum alloying raw material of the invention.
The iron ore powder used in the following specific examples contains TFe not less than 55% and SiO 2 Less than or equal to 8%, less than or equal to 5% of CaO, less than or equal to 5% of burning loss, and 3-8 mm of granularity; molybdenum ore powder components of 45% -50% of Mo, less than or equal to 0.03% of P and less than or equal to 0.40% of Cu; the CaO of the quicklime is more than or equal to 80 percent, and the granularity is less than or equal to 3mm; limestone powder CaO is more than or equal to 50 percent, and the granularity is less than or equal to 3mm; the granularity of the coke powder is 1 mm-3 mm.
Example 1
(1) 43% of iron ore powder, 25% of molybdenum ore powder, 7% of quicklime, 20% of limestone powder and 5% of coke powder are mixed.
(2) Granulating the mixture, wherein the granulating time is 10 minutes, wetting the mixture by atomized water, and the water content of the mixture is 8.0%, wherein the granularity of the prepared mixture is 3-8 mm.
(3) The prepared mixed material is distributed on a sintering machine, the thickness of the material is 700mm, the ignition temperature is 980 ℃, the ignition negative pressure is 8kPa, and the ignition time is 2 minutes. Crushing and screening the sintered cake obtained by sintering to obtain a molybdenum alloying raw material finished product with the particle size of 10 mm-50 mm. The prepared molybdenum alloying raw material has a Mo content of 21.44% and an S content of 3.24%.
(4) The residual Mo content of the molten steel detected by the end point of the converter is 0.0029 percent, and the S content is 0.022 percent.
(5) The prepared molybdenum alloying raw materials are added according to the amount of 3.5kg per ton of steel in the tapping process of the converter.
(6) The Mo content in the refined steel was 0.0771% and the S content was 0.013%. The Mo yield is about 98.9%.
Example 2
The difference between this example and example 1 is that the composition of each material in step (1) is: 38% of iron ore powder, 28% of molybdenum ore powder, 10% of quicklime, 18% of limestone powder and 6% of coke powder.
The molybdenum alloying raw material prepared in the embodiment has the Mo content of 23.06% and the S content of 3.56%.
The molybdenum alloying raw material is used for smelting molybdenum-containing steel:
(1) The residual Mo content of the molten steel detected by the end point of the converter is 0.0035 percent, and the S content is 0.027 percent.
(2) The prepared molybdenum alloying raw materials are added according to the amount of 3.5kg per ton of steel in the tapping process of the converter.
(3) The Mo content in the refined steel detected by the station is 0.0834 percent, and the Mo yield is 99.0 percent.
Comparative example 1
The comparative example differs from example 1 in the composition of the respective materials: 23% of iron ore powder, 45% of molybdenum ore powder, 7% of quicklime, 20% of limestone powder and 5% of coke powder. The sintering process was similar to example 1, and the temperature rise rate of the material layer was found to be too slow and the flue gas flow was low. When sintering proceeds to about 1/3 of the layer, sintering cannot proceed further down because the layer is too dense. The reason for this is probably that the proportion of molybdenum ore powder is too high, the granulating effect is poor, and the material layer is too compact, so that the sintering process cannot be completed.
Comparative example 2
Compared with the embodiment 1, the comparative example 2 directly adds molybdenum concentrate powder in the tapping process, and the molybdenum concentrate powder is powder and has high sulfur content, so that the yield of Mo from a refining station is low and the problem of serious sulfur increase exists.
(1) The residual Mo content of the molten steel detected by the end point of the converter is 0.0023 percent, and the S content is 0.024 percent.
(2) Molybdenum concentrate powder is added along with steel flow through a feed port in the tapping process of the converter, and the addition amount is 1.5kg per ton of steel.
(3) The Mo content of the molten steel detected by the refining arrival is 0.0631 percent, and the S content is 0.083 percent. The Mo yield in the molybdenum concentrate was 86.2%.
Claims (6)
1. The preparation method of the molybdenum alloying raw material of the molybdenum-containing steel is characterized by comprising the following specific steps:
(1) Premixing iron ore powder, molybdenum ore powder, quicklime, limestone powder and coke powder according to a proportion to obtain a mixture; wherein, iron ore powder 30-50%, molybdenum ore powder 20-28%, quicklime 5-15%, limestone powder 18-23% and coke powder 4-10%;
(2) Loading the mixture obtained in the step (1) into a roller pelletizer for uniformly mixing and granulating to obtain a mixed material, wherein the particle size range of the mixed material is 3-8 mm;
(3) Sintering the uniformly mixed material in the step (1) on a sintering machine;
(4) And cooling the sintered raw materials, and crushing and screening to obtain the molybdenum-containing steel molybdenum alloying raw materials.
2. The method for preparing molybdenum alloying raw material of molybdenum-containing steel according to claim 1, wherein the iron ore powder in the step (1) comprises TFe not less than 55% and SiO 2 Less than or equal to 8%, less than or equal to 5% of CaO, less than or equal to 5% of burning loss, and 3-8 mm of granularity; molybdenum ore powder components of 45% -50% of Mo, less than or equal to 0.03% of P and less than or equal to 0.40% of Cu; the CaO of the quicklime is more than or equal to 80 percent, and the granularity is less than or equal to 3mm; limestone powder CaO is more than or equal to 50 percent, and the granularity is less than or equal to 3mm; the granularity of the coke powder is 1 mm-3 mm.
3. The method for producing a molybdenum-containing steel-molybdenum alloyed raw material according to claim 1, wherein the granulating time of the mixing in the step (2) is 10 minutes, the mixture is wetted with mist water, and the moisture of the mixture is 8.0%.
4. The method for preparing the molybdenum-containing steel molybdenum alloying raw material according to claim 1, wherein in the step (3), the thickness of the cloth is 700mm, the ignition temperature is 980 ℃, the ignition negative pressure is 7-9 kpa, and the ignition time is 2min.
5. The method for preparing the molybdenum-containing steel molybdenum alloying raw material according to claim 1, wherein the particle size of the crushing and screening in the step (4) is 10 mm-50 mm.
6. The use of the molybdenum-containing steel molybdenum alloying raw material according to claim 1, wherein the raw material is fed to a converter silo at the following time: in the tapping process of the converter, deoxidizing agents such as aluminum blocks and the like are added.
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