CN106282453A - A kind of method of sefstromite blast furnace process - Google Patents
A kind of method of sefstromite blast furnace process Download PDFInfo
- Publication number
- CN106282453A CN106282453A CN201610791001.1A CN201610791001A CN106282453A CN 106282453 A CN106282453 A CN 106282453A CN 201610791001 A CN201610791001 A CN 201610791001A CN 106282453 A CN106282453 A CN 106282453A
- Authority
- CN
- China
- Prior art keywords
- sefstromite
- blast furnace
- vanadium
- furnace process
- content
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/04—Making slag of special composition
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention discloses a kind of method of sefstromite blast furnace process, and described method includes that allocating furnace charge into blast furnace smelts；Described furnace charge includes sefstromite, flux and fuel；Described sefstromite is made up of vanadium titanium sintering deposit, vanadium-titanium pellet and lump ore；Described fuel is made up of coke, nut coke and coal dust；It is calculated in mass percent, TiO in blast-furnace slag2Content is 14～28%, and Sulfur Content in Hot Iron constituent content is 0.25%～0.4%, and in molten iron, element silicon total content is 0.15%～0.4%.Described method is beneficial to vanadium, titanium recycles, and reduces blast furnace process cost.
Description
Technical field
The present invention relates to field technical field of blast furnace process, a kind of method being specifically related to sefstromite blast furnace process.
Background technology
Blast furnace process is the important step during iron and steel produces, and blast furnace smelting technology economic indicator is good, and technique is simple, produces
Amount is big, and labor productivity is high, and energy consumption is low, and the ferrum that this method produces still accounts for more than the 95% of World Iron total output, at present, along with
The supply of domestic common iron ore is nervous, and price the most gradually rises, and the common iron mine of a large amount of use will substantially increase ironmaking
Production cost.And sefstromite is a kind of based on ferrum, it is associated with the oxidation of the multiple rare high value metals such as vanadium, titanium simultaneously
Ore deposit, K2O、Na2The relatively common ore deposit of O, content of Pb&Zn is low, and China's sefstromite bed is widely distributed, rich reserves, reserves and opening
The amount of adopting occupies the 3rd of whole nation iron mine, proved reserves 98.3 hundred million tons.Therefore, sefstromite is national defence and high-tech industry development
Necessary strategic materials.
Carry out the comprehensive utilization of sefstromite resource, it is simply that will to the greatest extent may be used while effective extraction and application wherein ferrum element
The Appropriate application of its accompanying useful components can be realized.The smelting process that China uses is to be smelt the iron mine containing vanadium titanium through blast furnace to contain
Vanadium-containing molten iron, molten iron makes vanadium enter in slag through oxygen top-blown converter blowing.This method, on the one hand TiO in slag2Higher, and
As TiO in slag2Easily reduction generates Low-valent Titanium compound (such as, TiC, TiN and solid solution Ti (C, N) thereof), in blast furnace smelting
TiC, TiN and the solid solution Ti (C, N) thereof that can not melt under the conditions of refining are distributed in slag with superfine little granule with disperse state
In.Along with reducing degree gradually steps up, in slag, TiC, TiN and solid solution Ti (C, N) content thereof are continuously increased, and slag viscosity is gradually
Raise, as TiO in slag2When being reduced to a certain degree, slag viscosity will drastically raise, and mobility is deteriorated, and causes blast furnace slag
Ferrum regardless of, can not slag tap smoothly tap a blast furnace, the working of a furnace deteriorate, cause furnace condition disorder time serious.On the other hand, the silicon in molten iron can with add
Add agent generation oxidation reaction to generate various oxides and enter in slag, when vanadium is oxidized and generate V2O5When entering slag, inevitable
Diluted by the oxide of above-mentioned various elements, cause V in the vanadium slag of vanadium extraction by converter blowing2O5Content is low, thus affects the recovery of vanadium
Rate.
Summary of the invention
In view of this, a kind of method that the invention provides sefstromite blast furnace process, described method is beneficial to vanadium, titanium reclaims
Utilize, reduce blast furnace process cost.
For solving above technical problem, the technical scheme that the present invention provides is to provide the side of a kind of sefstromite blast furnace process
Method, described blast furnace process furnace charge includes sefstromite, flux and fuel；Described furnace charge includes sefstromite, flux and fuel；Institute
State sefstromite to be made up of vanadium titanium sintering deposit, vanadium-titanium pellet and lump ore；Described fuel is made up of coke, nut coke and coal dust；With
Mass percentage, TiO in blast-furnace slag2Content is 14～28%, and Sulfur Content in Hot Iron constituent content is 0.25%～0.4%, ferrum
In water, element silicon total content is 0.15%～0.4%.Preferably, being calculated in mass percent, described sefstromite includes described vanadium
Titanium sintering deposit 68%～83%, described vanadium-titanium pellet 15%～25% and described lump ore 2%～7%.
Preferably, being calculated in mass percent, described vanadium titanium sintering deposit is with v-ti magnetite concentrate powder 65～80% and non-vanadium titanium
Fine iron breeze 20～35% forms for raw material sintering.
Preferably, being calculated in mass percent, described vanadium-titanium pellet is with v-ti magnetite concentrate powder 80～95% and non-vanadium titanium
Fine iron breeze 5～20% roasting raw material roasting form.
Preferably, described lump ore is common bloodstone lump ore.
Preferably, the carrier gas of described fuel is compressed air, and described compressed-air actuated temperature is 10～25 DEG C, and pressure is
800～1200kPa.
Preferably, described flux is fluorite.
Preferably, described coal dust is made up of one or more in anthracite, lean coal, bituminous coal and brown coal.
Preferably, described method also include control blast furnace air temperature be 1120～1600 DEG C, blast furnace air quantity be 1300～
1600Nm3/ ton ferrum.
Preferably, described method also includes that controlling rich-oxygen of blast furnace amount is 20～50Nm3/ ton ferrum.
Preferably, described Sulfur Content in Hot Iron constituent content controls by adding desulfurizing agent in molten iron, is calculated in mass percent,
Described desulfurizing agent raw material is: quartz sand 40%～65%, quick lime 3%～8%, fluorite 20%～35%, NaHCO34%～
12%, Al2O34%～10%.
Preferably, in described molten iron, silicon content controls by adding desiliconization agent in molten iron, is calculated in mass percent,
Described desiliconization agent raw material is: sintering breeze 55%～75%, pulverized limestone 18%～35%, Fluorspar Powder 5%～10%.
The present invention uses the sefstromite of higher vanadium titanium elements content, improves vanadium titanium elements content in slag, beneficially vanadium,
Titanium recycles；By controlling molten iron temperature, blast furnace air quantity, pathogenic wind-warm, Rich Oxygen Amount, thus improve permeability of stock column difference and pressure reduction
High shortcoming, it is ensured that the timely uniform discharge of slag, it is to avoid because slag extends TiO at residing time in furnace2Cross reduction generate
TiC, TiN and solid solution Ti (C, N) thereof, avoid slag viscosity to raise the slag fluidity that causes simultaneously and be deteriorated, slag ferrum regardless of, from
And improve TiO in slag2The recovery of titanium in content, beneficially slag；By adding desulfurizing agent and desiliconization agent in molten iron, control ferrum
Element sulphur and the content of element silicon in water, thus reduce the recovery of vanadium in the oxide content of sulfur in slag, silicon, beneficially slag.
The present invention uses fluorite as flux, fluorite CaF2Ionization degree is big, the F ionized out-Ion damaged SixOy 2-Net
Shape structure and reduce the viscosity of titanium slag, improve slag fluidity, it is to avoid cupola well bonding enhances molten iron and separates with slag
Effect, the beneficially recovery of vanadium titanium in slag.Meanwhile, CaF2Enter slag and form eutectic material with other component, thus reduce
The melting temperature of slag；CaF2Also can increase the active force between high titanium slag particle and make on slag ferrum two fused solution interphase interface
Surface free energy is superfluous, thus decreases the contact area between slag and molten iron so that ferrum solution loss in slag subtracts
Few.
Compared with prior art, its detailed description is as follows for the application:
The present invention uses the sefstromite of higher vanadium titanium elements content, controls reaction condition, preferably flux, de-by adding
Sulfur agent, desiliconization agent control Sulfur Content in Hot Iron element, silicon content, improve vanadium titanium recovery rate in slag；In minimizing sefstromite
Ore deposit uses, and reduces blast furnace process cost.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with specific embodiment pair
The present invention is described in further detail
Embodiment 1～16
A kind of method that the invention provides sefstromite blast furnace process, described method is beneficial to vanadium, titanium recycles, and reduces
Blast furnace process cost.
A kind of method that the invention provides sefstromite blast furnace process, comprises the following steps: with v-ti magnetite concentrate powder
It is that raw material sinters vanadium titanium sintering deposit with non-sefstromite concentrate powder；Roast with v-ti magnetite concentrate powder and non-sefstromite concentrate powder for raw material
Burn vanadium-titanium pellet, the vanadium titanium sintering deposit obtained, the vanadium-titanium pellet that obtains are mixed with lump ore, obtains the vanadium of high vanadium Ti content
Ilmenite, is calculated in mass percent, and formula is shown in by table 1
Table 1
Quartz sand, quick lime, fluorite, NaHCO3With Al2O3Desulfurizing agent is prepared, to sinter breeze, pulverized limestone and firefly for raw material
Stone powder be raw material prepare desiliconization agent by, be calculated in mass percent, above-mentioned desulfurizing agent and desiliconization agent formula are as shown in table 2.
Table 2
The sefstromite of formula A～D and a certain amount of nut coke and coke agent stirring is added all by table 3 by mixing plant
Even, then by the furnace charge that stirs in transmission belt is transferred to blast furnace, the bottom of blast furnace is provided with air port and communicates with air stove,
Air stove uses preheating technique, in order to ensureing to send into the pathogenic wind-warm of blast furnace, air quantity reaches table 3 preset value；Meanwhile, compression sky is selected
Flux fluorite and pulverized coal injection, as carrier, are blown into blast furnace by gas, control compressed air temperature and pressure by table 3, blast oxygen-enriched sky
Gas, controls rich-oxygen of blast furnace amount by table 3, is additionally provided with tapping hole in the bottom in the air port of blast furnace, during tapping a blast furnace, controls molten iron temperature
Degree ＞ 1400 DEG C, is added desulfurizing agent and the desiliconization agent of formula 1～4 by table 3, and above-mentioned smelting condition is as shown in table 3.
Table 3
Being calculated in mass percent, above-mentioned smelting process produces Sulfur Content in Hot Iron element, silicon content, CaF in slag2、
TiO2, iron content as shown in table 4 below with total fuel ratio.
Table 4
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (10)
1. the method for a sefstromite blast furnace process, it is characterised in that described method includes that furnace charge is allocated into blast furnace carries out smelting
Refining；Described furnace charge includes sefstromite, flux and fuel；Described sefstromite is by vanadium titanium sintering deposit, vanadium-titanium pellet and lump ore
Composition；Described fuel is made up of coke, nut coke and coal dust；It is calculated in mass percent, TiO in blast-furnace slag2Content be 14～
28%, Sulfur Content in Hot Iron constituent content is 0.25%～0.4%, and in molten iron, element silicon total content is 0.15%～0.4%.
The method of sefstromite blast furnace process the most according to claim 1, it is characterised in that be calculated in mass percent, described
Sefstromite include described vanadium titanium sintering deposit 68%～83%, described vanadium-titanium pellet 15%～25% and described lump ore 2%～
7%.
The method of sefstromite blast furnace process the most according to claim 1, it is characterised in that be calculated in mass percent, described
Vanadium titanium sintering deposit with v-ti magnetite concentrate powder 65～80% and non-sefstromite concentrate powder 20～35% form for raw material sintering.
The method of sefstromite blast furnace process the most according to claim 1, it is characterised in that be calculated in mass percent, described
Vanadium-titanium pellet with v-ti magnetite concentrate powder 80～95% and non-sefstromite concentrate powder 5～20% roasting raw material roasting form.
5. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that the carrier gas of described fuel is compression sky
Gas, described compressed-air actuated temperature is 10～25 DEG C, and pressure is 800～1200kPa.
6. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that described flux is fluorite.
7. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that described method also includes controlling blast furnace wind
Temperature is 1120～1600 DEG C, and blast furnace air quantity is 1300～1600Nm3/ ton ferrum.
8. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that it is rich that described method also includes controlling blast furnace
Oxygen amount is 20～50Nm3/ ton ferrum.
9. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that described Sulfur Content in Hot Iron constituent content passes through
Adding desulfurizing agent in molten iron to control, be calculated in mass percent, described desulfurizing agent raw material is: quartz sand 40%～65%, calculogenesis
Ash 3%～8%, fluorite 20%～35%, NaHCO34%～12%, Al2O34%～10%.
10. according to the method for claim 1 sefstromite blast furnace process, it is characterised in that in described molten iron, silicon content leads to
Crossing and add desiliconization agent control in molten iron, be calculated in mass percent, described desiliconization agent raw material is: sintering breeze 55%～75%,
Pulverized limestone 18%～35%, Fluorspar Powder 5%～10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791001.1A CN106282453A (en) | 2016-08-31 | 2016-08-31 | A kind of method of sefstromite blast furnace process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791001.1A CN106282453A (en) | 2016-08-31 | 2016-08-31 | A kind of method of sefstromite blast furnace process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106282453A true CN106282453A (en) | 2017-01-04 |
Family
ID=57672916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610791001.1A Pending CN106282453A (en) | 2016-08-31 | 2016-08-31 | A kind of method of sefstromite blast furnace process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106282453A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043836A (en) * | 2017-04-18 | 2017-08-15 | 王冰 | A kind of method of blast furnace ironmaking |
| CN107400744A (en) * | 2017-08-07 | 2017-11-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of smelting process of high chromium high-titanium iron ore stone |
| CN107586903A (en) * | 2017-09-29 | 2018-01-16 | 四川德胜集团钒钛有限公司 | A kind of blast furnace process furnace charge and blast furnace smelting method |
| CN108148939A (en) * | 2017-12-31 | 2018-06-12 | 新疆八钢铁股份有限公司 | Ou Yelu uses bottle coal coke and the iron smelting method of beans fuel structure |
| CN111635970A (en) * | 2020-06-12 | 2020-09-08 | 武钢集团昆明钢铁股份有限公司 | Intensified smelting method for titanium slag in blast furnace |
| CN112662826A (en) * | 2020-12-30 | 2021-04-16 | 黑龙江建龙钢铁有限公司 | Novel process for improving recovery rate of blast furnace vanadium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096719A (en) * | 2006-06-29 | 2008-01-02 | 宝山钢铁股份有限公司 | Desilication technology for chromium-containing melted iron |
| CN103627850A (en) * | 2013-11-27 | 2014-03-12 | 攀钢集团研究院有限公司 | Desulphurization slag modifier for molten iron containing vanadium and titanium, preparation method of desulphurization slag modifier and desulphurization slag modifying method |
| CN104894313A (en) * | 2015-06-09 | 2015-09-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method for vanadium titano-magnetite |
-
2016
- 2016-08-31 CN CN201610791001.1A patent/CN106282453A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096719A (en) * | 2006-06-29 | 2008-01-02 | 宝山钢铁股份有限公司 | Desilication technology for chromium-containing melted iron |
| CN103627850A (en) * | 2013-11-27 | 2014-03-12 | 攀钢集团研究院有限公司 | Desulphurization slag modifier for molten iron containing vanadium and titanium, preparation method of desulphurization slag modifier and desulphurization slag modifying method |
| CN104894313A (en) * | 2015-06-09 | 2015-09-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method for vanadium titano-magnetite |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043836A (en) * | 2017-04-18 | 2017-08-15 | 王冰 | A kind of method of blast furnace ironmaking |
| CN107400744A (en) * | 2017-08-07 | 2017-11-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of smelting process of high chromium high-titanium iron ore stone |
| CN107586903A (en) * | 2017-09-29 | 2018-01-16 | 四川德胜集团钒钛有限公司 | A kind of blast furnace process furnace charge and blast furnace smelting method |
| CN108148939A (en) * | 2017-12-31 | 2018-06-12 | 新疆八钢铁股份有限公司 | Ou Yelu uses bottle coal coke and the iron smelting method of beans fuel structure |
| CN111635970A (en) * | 2020-06-12 | 2020-09-08 | 武钢集团昆明钢铁股份有限公司 | Intensified smelting method for titanium slag in blast furnace |
| CN111635970B (en) * | 2020-06-12 | 2022-02-11 | 武钢集团昆明钢铁股份有限公司 | Intensified smelting method for titanium slag in blast furnace |
| CN112662826A (en) * | 2020-12-30 | 2021-04-16 | 黑龙江建龙钢铁有限公司 | Novel process for improving recovery rate of blast furnace vanadium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106282453A (en) | A kind of method of sefstromite blast furnace process | |
| CN101775451B (en) | Blast-furnace smelting method for vanadium titano-magnetite | |
| CN106480307B (en) | A method of improving homogeneous agglomerate | |
| CN104862441B (en) | A kind of method separating and recovering ferrum in vanadium titano-magnetite, vanadium, titanium | |
| WO2019071788A1 (en) | Manufacturing method using copper and iron containing mixing slag | |
| WO2019071796A1 (en) | Method for recovering valuable components from mixed slag containing nickel and iron | |
| CN111394534B (en) | Method for continuous smelting reduction iron making | |
| CN106011341B (en) | The method that blast furnace process schreyerite carries high-coal ratio | |
| WO2019071794A1 (en) | Method for recovering valuable components from mixed slag containing copper and iron | |
| CN108950112A (en) | The method of full vanadium titano-magnetite blast furnace ironmaking | |
| CN108998606B (en) | The blast furnace ferrous burden structure that a kind of pellet and Metallurgical Properties of Sinter are distributed rationally | |
| CN104762429A (en) | Blast furnace smelting method | |
| CN106191351A (en) | A kind of method of blast furnace ironmaking | |
| CN106755658A (en) | A kind of method of the metallurgical also original production of titanium-containing slag | |
| CN106755653A (en) | A kind of method containing rare earth or the also original production of niobium slag metallurgy melting | |
| CN104120207B (en) | One joins the raw ferriferous method in ore deposit with tin tail iron ore concentrate and the poor assorted ore deposit of high harmful element | |
| CN102041400B (en) | Process and equipment for producing high-content manganese silicon alloy from low-grade ferromanganese ore | |
| CN107488784A (en) | A kind of blast furnace ironmaking superfluxed pellets and its production method | |
| CN102051427A (en) | Method for preparing low-phosphorus and low-titanium molten iron by mixed-smelting high-phosphorus iron ore and ilmenite by oxygen-rich top-blowing smelting reduction technology | |
| CN105970073A (en) | Preparation method of steel-making additive for smelting molybdenum-bearing steel | |
| CN110643760B (en) | Ultrahigh Al2O3Blast furnace smelting method of furnace slag | |
| CN111154934A (en) | Furnace burden structure ratio for adjusting blast furnace slag MgO | |
| CN202063976U (en) | Equipment for producing high manganese-silicon by low-grade ferromanganese ore | |
| CN111100982B (en) | Process for smelting manganese-rich slag from high-aluminum lean-manganese iron ore and high-sulfur coke | |
| CN107043836A (en) | A kind of method of blast furnace ironmaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |