CN103469049A - Technology for steel making by directly alloying molybdenum oxide - Google Patents

Technology for steel making by directly alloying molybdenum oxide Download PDF

Info

Publication number
CN103469049A
CN103469049A CN2013104166529A CN201310416652A CN103469049A CN 103469049 A CN103469049 A CN 103469049A CN 2013104166529 A CN2013104166529 A CN 2013104166529A CN 201310416652 A CN201310416652 A CN 201310416652A CN 103469049 A CN103469049 A CN 103469049A
Authority
CN
China
Prior art keywords
molybdenum oxide
steel
molybdenum
iron liquid
raw material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2013104166529A
Other languages
Chinese (zh)
Other versions
CN103469049B (en
Inventor
刘吉刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangyin Xingcheng Special Steel Works Co Ltd
Original Assignee
Jiangyin Xingcheng Special Steel Works Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangyin Xingcheng Special Steel Works Co Ltd filed Critical Jiangyin Xingcheng Special Steel Works Co Ltd
Priority to CN201310416652.9A priority Critical patent/CN103469049B/en
Publication of CN103469049A publication Critical patent/CN103469049A/en
Application granted granted Critical
Publication of CN103469049B publication Critical patent/CN103469049B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a technology for steel making by directly alloying molybdenum oxide. The technology is characterized in that the smelting process comprises the following steps of a. adding a molybdenum oxide raw material to a container or a smelting furnace which is unfilled with or partially filled with molten steel or iron liquid, then continuously filling the molten steel or iron liquid, and mixing the molybdenum oxide raw material in the molten steel or iron liquid for certain time; b. after the molten steel or iron liquid stands still in the container or the smelting furnace, adding a certain amount of reducing agent to the surface of the molten steel or iron liquid and a slag surface; and c. after the content of a molybdenum element in the molten steel or iron liquid stabilizes in a smelting later period, adding molybdenum-containing alloy so as to adjust the components of the molten steel or iron liquid. The technology has the characteristics that the molybdenum alloying smelting process is simple to operate, the yield of the molybdenum alloy element is high, the alloying smelting time is short, the consumption of smelting energy sources is low and the smelting cost is low; and equipment has wide adaptation and can be applied to the smelting of steel with the molybdenum content of 0.001-15%.

Description

Molybdenum oxide DIRECT ALLOYING process for making
Technical field
The present invention relates to a kind of molybdenum oxide DIRECT ALLOYING process for making.Belong to ferrous metallurgy steel alloy (iron) technical field of smelting.
Background technology
Due in ferrous materials can with other alloying element acting in conjunction, improve the use properties of ferrous materials, molybdenum is one of conventional alloying element in steel alloy.At present, major part steel alloy smelting enterprise is in the smelting Mo-contained alloy steel process, adopt the method that adds ferro-molybdenum in smelting furnace to realize the molybdenum element alloying of steel or iron liquid, and ferro-molybdenum utilizes the reductive agent reduction to produce containing molybdenum raw material (as molybdenum oxide) by (as electric furnace) in smelting furnace, therefore containing the molybdenum steel kind, smelting need to be through two process procedure, that is: ferro-molybdenum is smelted and the smelting of steel alloy alloying, its technical process is long, energy-output ratio is large, the carrying capacity of environment weight.
At the beginning of 21 century, Some Domestic iron and steel enterprise has developed the molybdenum oxide furnace bottom and has spread into method DIRECT ALLOYING smelting technology (application number: 00129982), spread the mixture into molybdenum oxide, reductive agent and molybdenum oxide volatilization inhibitor at EAF bottom in this smelting technology, after pack into steel scrap power transmission smelt.Although this technique can realize the molybdenum oxide DIRECT ALLOYING and smelt containing molybdenum steel, but for fear of furnace bottom spread into reductive agent oxidized, need to postpone the oxygen blast time of origin of fluxing, therefore electric energy and refractory consumption rate amount have been increased, extended tap to tap time (as: when 10t electric arc furnace 18t tap target is advanced molybdenum 5.58% smelting, tap to tap time, average recovery rate can reach 97.2% than molybdenum-iron technique prolongation >=15min.), the normal rhythm of production of iron and steel enterprise is had to certain influence.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, the molybdenum oxide DIRECT ALLOYING process for making of the molybdenum element alloying that a kind of Simple fast realizes steel or iron liquid is provided.
The object of the present invention is achieved like this:
A kind of molybdenum oxide DIRECT ALLOYING process for making, the molybdenum oxide raw material is added in the container containing or smelting furnace of steel (iron) liquid of not packing into or partly pack into, start (continuation) steel (iron) liquid of packing into, more than maintenance molybdenum oxide raw material mixes and rushes 30S in steel (iron) liquid, add reductive agent on steel (iron) liquid level or the top of the slag after the calmness of steel (iron) liquid, if in steel (iron) liquid after the molybdenum element stable content molybdenum content below standard, add Mo-contained alloy to regulate steel (iron) liquid composition.
The container containing (smelting furnace) that adds the molybdenum oxide raw material can be hot metal ladle (tank), hot metal mixer, converter, electric furnace, induction furnace, ladle, tundish; Mixed rush the DIRECT ALLOYING smelting process and can take the bottom blowing at steel (iron) liquid container containing (smelting furnace), strengthen the mixed intensity of rushing of steel (iron) liquid, the carrying out of accelerated oxidation molybdenum reduction reaction.
The molybdenum oxide raw material adopted can be for molybdenum oxide and other compound (as CaO, MgO, Al 2o3, SiO 2deng) complex compound or the mixture that form; Can sneak into 10 ~ 40% lime, Wingdale or magnesium oxide in the molybdenum oxide raw material and reduce MoO 3the volatilization loss amount; Can sneak into MoO in the molybdenum oxide raw material 3the reductive agent of (conversion pure substance) quality 10 ~ 30%.The molybdenum oxide raw material can be powdery, compacting or sintering bulk and add.
The molybdenum oxide raw material can add according to advancing molybdenum 0.001 ~ 15% conversion amount in steel (iron) liquid, and method of calculation are: ([Mo] e-[Mo] i) * m fe/ T mo; Wherein [Mo] efor steel (iron) liquid is smelted target Mo content, %; [Mo] ifor adding before the molybdenum oxide raw material Mo content in steel (iron) liquid, %; m fefor adding steel (iron) liquid weight after the molybdenum oxide raw material, ton; T mofor molybdenum element content in the molybdenum oxide raw material, %.
Steel (iron) liquid after calmness, can add reductive agent to strengthen reduction in container containing (smelting furnace) on steel (iron) liquid level or the top of the slag, sneaks into reduction dosage sum in reductive agent add-on and molybdenum oxide raw material for adding MoO 310 ~ 45% of (conversion pure substance) quality.
The above reductive agent can be one or more the mixture in carbon dust, ferrosilicon, silicon carbide, carbide of calcium, aluminium.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts steel (iron) liquid the molybdenum oxide raw material to be mixed to the method for rushing DIRECT ALLOYING, utilizes steel (iron) hydraulic coupling or inhibitor to MoO 3volatilization suppressed, reduce MoO 3volatilization loss, improve the yield of alloy of molybdenum element; Utilize steel (iron) liquid interior element or with addition of reductive agent and MoO 3reaction, realize MoO 3fast restore and steel (iron) liquid rapid alloying.
Therefore, the present invention has reduced the molybdenum-iron of smelting in flow process containing molybdenum steel and has smelted link, avoided the molybdenum oxide furnace bottom to spread into the method DIRECT ALLOYING extending the impact of smelting technology-tap to tap time (when 10t electric arc furnace 18t tap target is advanced molybdenum 5.58% and smelted, tap to tap time is than molybdenum-iron technique prolongation >=15min, average recovery rate can reach 97.2%, in the present invention, technique is compared the molybdenum oxide furnace bottom and is spread more than the method process time can shorten 15min, recovery rate >=98%), there is technological operation simple, molybdenum alloy element recovery rate is high, alloying is short tap to tap time, the smelting energy-output ratio is few, the characteristics that smelting cost is low, can be applicable to 0.001 ~ 15% smelting containing molybdenum amount steel alloy.
Embodiment
Below in conjunction with embodiment, the invention will be further described, not limiting the scope of the invention:
embodiment 1
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopt the mixed molybdenum oxide raw material that rushes of iron liquid to reduce the alloying that realizes iron liquid molybdenum element, its processing method is: the general does not add in the sky iron ladle with addition of the powdery molybdenum oxide raw material of reductive agent and volatilization inhibitor, the mixed molybdenum oxide raw material that rushes of molten iron for the process of tapping a blast furnace, after molten iron send steel melting furnace to smelt, detect molybdenum element content in molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade.
Add molybdenum oxide material quantity method of calculation to be: ([Mo] e-[Mo] i) * m fe/ T mo; Wherein [Mo] efor steel or iron liquid smelting target Mo content, %; [Mo] ifor adding before the molybdenum oxide raw material Mo content in steel or iron liquid, %; m fefor adding steel or iron liquid weight after the molybdenum oxide raw material, ton; T mofor molybdenum element content in the molybdenum oxide raw material, %.
Adopt the method to smelt containing molybdenum steel molybdenum alloy recovery rate and can reach more than 98%, compare the ferro-molybdenum smelting technology and do not need additionally to increase smelting equipment, tap to tap time increase<1min, power consumption reduction >=30kWh/t1%Mo.
embodiment 2
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopts the mixed molybdenum oxide raw material that rushes of molten steel to reduce the alloying that realizes the molten steel molybdenum element, and its processing method is: by quality, be at first MoO 3ferrosilicon powder and the molybdenum oxide of (conversion pure substance) quality 10 ~ 20% mix and are pressed into agglomerate, and at converter tapping, finish to add in first 1 minute ladle to carry out the mixed punching of molten steel this agglomerate, after tapping, molybdenum element content in the monitoring molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade after the molybdenum stable content.
All the other are with embodiment 1.
embodiment 3
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopts the mixed molybdenum oxide raw material that rushes of molten steel to reduce the alloying that realizes the molten steel molybdenum element, and its processing method is: by quality, be MoO 3wingdale, the quality of (conversion pure substance) quality 15 ~ 35% are MoO 3magnesium oxide, the quality of (conversion pure substance) quality 0.1 ~ 5% are MoO 3carbon dust, the quality of (conversion pure substance) quality 8 ~ 10% are MoO 3the silicon carbide of (conversion pure substance) quality 2 ~ 15% and molybdenum oxide mix and briquetting, add in the sky ladle, and electric furnace steel tapping process molten steel is poured the mixed punching of ladle into, and adding quality after tapping on the molten steel face is MoO 3carbon dust, the quality of (conversion pure substance) quality 3 ~ 10% are MoO 3carbide of calcium, the quality of (conversion pure substance) quality 1 ~ 5% are MoO 3the aluminum shot of (conversion pure substance) quality 2 ~ 5%, and stir in the ladle bottom Argon, molybdenum element content in the monitoring molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade after the molybdenum stable content.
All the other are with embodiment 2.
embodiment 4
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopts the mixed molybdenum oxide raw material that rushes of iron liquid to reduce the alloying that realizes the molten steel molybdenum element, and its processing method is: by quality, be MoO 3lime and the molybdenum oxide of (conversion pure substance) quality 10 ~ 25% mix and sinter into piece, add the converter bottom without molten steel or molten iron, molybdenum oxide raw material in the mixed red switch stove of molten iron for the hot metal charging process, after converter tapping, molybdenum element content in the monitoring molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade after the molybdenum stable content.
All the other are with embodiment 2.
embodiment 5
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopt the mixed molybdenum oxide raw material that rushes of molten steel to reduce the alloying that realizes the molten steel molybdenum element, its processing method is: electric furnace is packed into after steel scrap, the molybdenum oxide raw material agglomerate with addition of reductive agent and volatilization inhibitor is not added to steel scrap charge level molten iron shock zone, the molten iron of packing into is impacted the molybdenum oxide raw material, molybdenum element content in electrosmelting detection of end molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade.
All the other are with embodiment 2.
embodiment 6
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopt the mixed molybdenum oxide raw material that rushes of molten steel to reduce the alloying that realizes the molten steel molybdenum element, its processing method is: the general does not add in aerial frequency induction furnace with addition of the powdery molybdenum oxide raw material of reductive agent and volatilization inhibitor, the molten steel of packing into mixes punching to the molybdenum oxide raw material, smelt molybdenum element content in the detection of end molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade.
All the other are with embodiment 2.
embodiment 7
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopt the mixed molybdenum oxide raw material that rushes of iron liquid to reduce the alloying that realizes the molten steel molybdenum element, its processing method is: the general does not add in hot metal mixer with addition of the powdery molybdenum oxide raw material of reductive agent and volatilization inhibitor, the iron liquid of packing into mixes punching, molybdenum element content in converter smelting detection of end molten steel, require to add molybdenum-iron to supply molten steel molybdenum element insufficient section according to steel grade.
All the other are with embodiment 2.
embodiment 8
A kind of molybdenum oxide DIRECT ALLOYING is smelted containing molybdenum steel technique, adopt molten steel to mix and rush the alloying that realizes the molten steel molybdenum element that the molybdenum oxide raw material is reduced, its processing method is: will with addition of the lasting short run of the powdery molybdenum oxide raw material of reductive agent and volatilization inhibitor, not add in the continuous casting tundish, utilize in Molten Steel Flow and tundish and blow and stirred, regulate molybdenum element content in molten steel.
All the other are with embodiment 2.
 
This embodiment adopts steel or iron liquid the molybdenum oxide raw material to be mixed to the method for rushing DIRECT ALLOYING, utilizes steel or pressure of molten iron or inhibitor to MoO 3volatilization suppressed, reduce MoO 3volatilization loss, improve the yield of alloy (recovery rate can reach more than 98%) of molybdenum element; Utilize steel or iron liquid interior element or with addition of reductive agent and MoO 3reaction, realize MoO 3fast restore and steel or iron liquid rapid alloying (starting tapping to the interior reduction ratio of molten steel calmness 5 ~ 6min>=90%).
Therefore, the present invention has that molybdenum alloy smelting technology (without increase equipment) simple to operate, molybdenum alloy element recovery rate are high, alloying tap to tap time short (without increasing extra time reduction), smelting energy-output ratio, few (chemical reaction is thermopositive reaction, can not cause the extra temperature drop of molten steel), the characteristics of smelting cost low (adding fourth quarter in 2012 1% Mo ton steel cost can reduce approximately 220 yuan), can be applicable to 0.001 ~ 15% smelting containing molybdenum amount steel alloy.

Claims (10)

1. a molybdenum oxide DIRECT ALLOYING process for making, it is characterized in that: smelting process is comprised of following link:
A adds the molybdenum oxide raw material in the container containing or smelting furnace of do not pack into or partly pack into steel or iron liquid, and then continue to pack into steel or iron liquid keep molybdenum oxide raw material mixed certain hour that rushes in steel or iron liquid;
B steel or iron liquid after calmness, add a certain amount of reductive agent in container containing or smelting furnace on steel or iron liquid level or the top of the slag;
In c smelting later stage steel or iron liquid, after the molybdenum element stable content, add Mo-contained alloy to regulate steel or iron liquid composition.
2. molybdenum oxide DIRECT ALLOYING process for making according to claim 1, is characterized in that described molybdenum oxide raw material can be complex compound or the mixture of molybdenum oxide and other compound formation; Described other compound is CaO, MgO, Al 2o 3, SiO 2in one or more mixing or chemical combination.
3. molybdenum oxide DIRECT ALLOYING process for making according to claim 2, is characterized in that being mixed with reductive agent in described molybdenum oxide raw material, and described reduction dosage can be conversion pure substance MoO 3quality 10 ~ 30%.
4. according to the described molybdenum oxide DIRECT ALLOYING of claim 2 or 3 process for making, it is characterized in that in described molybdenum oxide raw material adding the molybdenum oxide volatilization inhibitor, described molybdenum oxide volatilization inhibitor can be one or more the mixture in lime, Wingdale, magnesium oxide, and add-on can be conversion pure substance MoO 3quality 10 ~ 40%.
5. molybdenum oxide DIRECT ALLOYING process for making according to claim 1, is characterized in that it can be powdery, compacting shape or sintering bulk that described molybdenum oxide raw material adds state.
6. molybdenum oxide DIRECT ALLOYING process for making according to claim 1, is characterized in that the molybdenum oxide raw material can add according to advancing molybdenum 0.001 ~ 15% conversion amount in steel or iron liquid, and method of calculation are: ([Mo] e-[Mo] i) * m fe/ T mo;
Wherein [Mo] efor steel or iron liquid smelting target Mo content, %; [Mo] ifor adding before the molybdenum oxide raw material Mo content in steel or iron liquid, %; m fefor adding steel or iron liquid weight after the molybdenum oxide raw material, ton; T mofor molybdenum element content in the molybdenum oxide raw material, %.
7. molybdenum oxide DIRECT ALLOYING process for making according to claim 1, is characterized in that described container containing can be hot metal ladle, iron ladle, hot metal mixer, converter, electric furnace, induction furnace, ladle or tundish.
8. molybdenum oxide DIRECT ALLOYING process for making according to claim 1, it is characterized in that mixed rush time needs >=30 ss of described molybdenum oxide raw material in steel or iron liquid, can take the bottom blowing at steel or iron liquid container containing (smelting furnace), strengthen the mixed intensity of rushing of steel or iron liquid.
9. according to claim 1 or 2 or 3 described molybdenum oxide DIRECT ALLOYING process for making, it is characterized in that reductive agent is one or more the mixture in carbon dust, ferrosilicon powder, silicon carbide, carbide of calcium, aluminium.
10. according to claim 1 or 2 or 3 described molybdenum oxide DIRECT ALLOYING process for making, it is characterized in that described reductive agent, the described reduction dosage sum that adds is for conversion pure substance MoO 310 ~ 45% of quality.
CN201310416652.9A 2013-09-13 2013-09-13 Molybdenum oxide DIRECT ALLOYING process for making Active CN103469049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310416652.9A CN103469049B (en) 2013-09-13 2013-09-13 Molybdenum oxide DIRECT ALLOYING process for making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310416652.9A CN103469049B (en) 2013-09-13 2013-09-13 Molybdenum oxide DIRECT ALLOYING process for making

Publications (2)

Publication Number Publication Date
CN103469049A true CN103469049A (en) 2013-12-25
CN103469049B CN103469049B (en) 2016-08-17

Family

ID=49794086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310416652.9A Active CN103469049B (en) 2013-09-13 2013-09-13 Molybdenum oxide DIRECT ALLOYING process for making

Country Status (1)

Country Link
CN (1) CN103469049B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104152789A (en) * 2014-08-06 2014-11-19 江苏大学 Preparation method of wear-resistant ductile cast iron ball mill lining board quenched by residual heat
CN105200185A (en) * 2015-09-29 2015-12-30 南京钢铁股份有限公司 Steelmaking alloying smelting process for oxide with molybdenum in electric furnaces with high molten iron ratios
CN105369113A (en) * 2015-11-12 2016-03-02 江阴兴澄特种钢铁有限公司 Process for smelting vanadium-containing molten steel by direct alloying through calcium vanadate
CN105821281A (en) * 2016-03-29 2016-08-03 马鞍山市兴达冶金新材料有限公司 Direct steel making alloying metal oxide core-spun yarn and manufacturing method thereof
CN105908057A (en) * 2016-06-28 2016-08-31 北京科技大学 Direct alloying smelting method of molybdenum dioxide
CN105970073A (en) * 2016-05-05 2016-09-28 北京科技大学 Preparation method of steel-making additive for smelting molybdenum-bearing steel
CN106636540A (en) * 2016-12-21 2017-05-10 钢铁研究总院 Electric furnace steel making process capable of simultaneously and directly alloying manganese oxide and molybdenum oxide
CN107557516A (en) * 2017-08-07 2018-01-09 济源职业技术学院 The molybdenum oxide direct Reducing and Alloying process for making in converter
CN107974607A (en) * 2017-11-26 2018-05-01 秦皇岛首秦金属材料有限公司 A kind of nickel oxide, vanadium oxide DIRECT ALLOYING method for making steel
CN108048729A (en) * 2017-12-15 2018-05-18 中钢集团邢台机械轧辊有限公司 A kind of method that molybdenum element is added in steelmaking process
CN108179347A (en) * 2018-01-29 2018-06-19 西华大学 Method for smelting molybdenum-vanadium alloy steel through step-by-step reduction
CN109797269A (en) * 2019-01-21 2019-05-24 西安建筑科技大学 A kind of additive inhibiting molybdenum oxide briquetting vaporization at high temperature and molybdenum oxide briquetting and its preparation and application

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964712A (en) * 1982-10-04 1984-04-12 Daido Steel Co Ltd Method of addition for obtaining alloy
CN103074543A (en) * 2012-12-24 2013-05-01 河北节能耐火材料集团有限公司 Manufacturing technology of steel containing molybdenum

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964712A (en) * 1982-10-04 1984-04-12 Daido Steel Co Ltd Method of addition for obtaining alloy
CN103074543A (en) * 2012-12-24 2013-05-01 河北节能耐火材料集团有限公司 Manufacturing technology of steel containing molybdenum

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
姜英等: "转炉中钼氧化物直接合金化炼钢热力学分析", 《过程工程学报》 *
曲均志等: "氧化钼直接合金化的研究", 《2012年河北省炼钢-连铸生产技术与学术交流会论文》 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104152789A (en) * 2014-08-06 2014-11-19 江苏大学 Preparation method of wear-resistant ductile cast iron ball mill lining board quenched by residual heat
CN105200185A (en) * 2015-09-29 2015-12-30 南京钢铁股份有限公司 Steelmaking alloying smelting process for oxide with molybdenum in electric furnaces with high molten iron ratios
CN105200185B (en) * 2015-09-29 2017-07-28 南京钢铁股份有限公司 A kind of smelting process of molybdenum-containing oxide in high hot metal ratio Alloying of Electric Furnace Steelmaking
CN105369113A (en) * 2015-11-12 2016-03-02 江阴兴澄特种钢铁有限公司 Process for smelting vanadium-containing molten steel by direct alloying through calcium vanadate
CN105821281A (en) * 2016-03-29 2016-08-03 马鞍山市兴达冶金新材料有限公司 Direct steel making alloying metal oxide core-spun yarn and manufacturing method thereof
CN105970073B (en) * 2016-05-05 2018-04-06 北京科技大学 A kind of preparation method of steel-making additive for smelting molybdenum-containinstainless steel
CN105970073A (en) * 2016-05-05 2016-09-28 北京科技大学 Preparation method of steel-making additive for smelting molybdenum-bearing steel
CN105908057A (en) * 2016-06-28 2016-08-31 北京科技大学 Direct alloying smelting method of molybdenum dioxide
CN106636540A (en) * 2016-12-21 2017-05-10 钢铁研究总院 Electric furnace steel making process capable of simultaneously and directly alloying manganese oxide and molybdenum oxide
CN107557516A (en) * 2017-08-07 2018-01-09 济源职业技术学院 The molybdenum oxide direct Reducing and Alloying process for making in converter
CN107557516B (en) * 2017-08-07 2019-06-04 济源职业技术学院 The molybdenum oxide direct Reducing and Alloying process for making in converter
CN107974607A (en) * 2017-11-26 2018-05-01 秦皇岛首秦金属材料有限公司 A kind of nickel oxide, vanadium oxide DIRECT ALLOYING method for making steel
CN108048729A (en) * 2017-12-15 2018-05-18 中钢集团邢台机械轧辊有限公司 A kind of method that molybdenum element is added in steelmaking process
CN108179347A (en) * 2018-01-29 2018-06-19 西华大学 Method for smelting molybdenum-vanadium alloy steel through step-by-step reduction
CN108179347B (en) * 2018-01-29 2019-07-02 西华大学 Method for smelting molybdenum-vanadium alloy steel through step-by-step reduction
CN109797269A (en) * 2019-01-21 2019-05-24 西安建筑科技大学 A kind of additive inhibiting molybdenum oxide briquetting vaporization at high temperature and molybdenum oxide briquetting and its preparation and application

Also Published As

Publication number Publication date
CN103469049B (en) 2016-08-17

Similar Documents

Publication Publication Date Title
CN103469049B (en) Molybdenum oxide DIRECT ALLOYING process for making
CN100469932C (en) V2O5 direct alloying steelmaking technology
CN102828098A (en) Method for increasing molten steel terminal manganese content by adding manganese ore outside furnace
CN102787196B (en) Method for smelting stainless steel by direct reduced iron
CN103627842B (en) Method for enhancing end point carbon content in smelting medium-carbon steel from semisteel and semisteel steelmaking method
CN103882181B (en) Manganese-containing steel alloying process
CN101161835A (en) Utilization process of ferrosilicon smelting slag in silicon-manganese alloy smelting
CN103526066B (en) Continuous process for producing manganese-silicon alloy and slag rich in silicomanganese and producing micro-and low-carbon manganese-silicon alloy by utilization of slag rich in silicomanganese
CN101724751A (en) Method for smelting high vanadium ferrovanadium
CN107201422A (en) A kind of production method of mild steel
CN103627839B (en) Semisteel steelmaking carbon content control method and semisteel steelmaking method
CN103627846B (en) The method of molybdenum oxide DIRECT ALLOYING steel-making
CN103643056B (en) The smelting process of low carbon ferromanganese
CN103741023B (en) A kind of smelting process of nonmagnetic steel
CN103642966B (en) Method for improving high-carbon high-manganese steel converter smelting endpoint carbon content and steelmaking method
CN102277471B (en) Manufacturing method of steel
CN103484599B (en) Smelting method of high-manganese wear-resistant steel
CN103643094B (en) The smelting process of high carbon ferromanganese
CN101413044B (en) Alloy addition method for improving yield of ferromolybdenum
CN105506271B (en) Chrome ore composite pellet and its production method and application are used in a kind of argon oxygen decarburizing furnace reduction
CN102634634A (en) Method for producing high-alloy low-phosphorous steel used for boiler tube by adopting electric-arc furnace
CN103031409B (en) Novel process of steelmaking deoxidization by utilizing precipitator dust of refining furnace
CN105369113A (en) Process for smelting vanadium-containing molten steel by direct alloying through calcium vanadate
CN102876832A (en) Process for performing converter alloying vanadium increase by sheeted V2O5
CN102352421B (en) Process for smelting industrial pure iron with converter waste slag ball iron

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant