CN104694973A - Process for preparing ferrotitanium alloy - Google Patents
Process for preparing ferrotitanium alloy Download PDFInfo
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- CN104694973A CN104694973A CN201510063721.1A CN201510063721A CN104694973A CN 104694973 A CN104694973 A CN 104694973A CN 201510063721 A CN201510063721 A CN 201510063721A CN 104694973 A CN104694973 A CN 104694973A
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- titanium
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- ferrotitanium alloy
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/36—Alloys obtained by cathodic reduction of all their ions
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/26—Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium
- C25C3/28—Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a process for preparing a ferrotitanium alloy. The process comprises the following steps: (1) smelting the titanium concentrate into the titanium slag in an electric furnace, adding the alkali carbonate into the electric furnace, and introducing the oxygen and stirring; (2) electrolyzing by taking the graphite as an anode and the molten iron at bottom part of the electric furnace as a cathode, and putting the metallic titanium to melted iron to form a liquid phase ferrotitanium alloy; (3) discharging the molten iron and the liquid phase ferrotitanium alloy under an inert gas, and cooling to obtain the crude ferrotitanium alloy; and (4) deoxidizing and refining: electrolyzing by taking the alkali chloride and the titaniferous villiaumite as the electrolytes, taking the crude ferrotitanium alloy as the cathode and taking the carbon steel as the anode at the temperature of 600-800 DEG C, controlling the cathode current density to 1.0-1.5 A/cm<2. while electrolyzing, taking the cathode product out under normal temperature after finishing electrolyzing, and washing by deionized water to obtain the ferrotitanium alloy. The process for preparing the ferro titanium alloy provided by the invention is low in production cost, short in process flow, complete in de-oxygenation, low in process energy consumption and high in current efficiency and the application of the ferrotitanium alloy in the steelmaking can be improved.
Description
Technical field
The present invention relates to technical field of iron alloy production, particularly relate to a kind of preparation technology of ferro-titanium.
Background technology
Ferro-titanium is widely used as reductor, air release agent and alloying element additive in Iron And Steel Industry.Thermite process and remelting process is generally adopted to produce this kind of alloy at present.The conventional preparation techniques of ferro-titanium, one is with reductive agent silicon, aluminium reducing titanium oxide and ferriferous oxide, and in the ferro-titanium that this method is prepared, in higher, the product of oxygen level, reductive agent content is higher, and reductive agent cost is high, indirectly adds production cost; Two is the enlightenments of powered deoxidization technique, graphite is adopted to be anode and with the oxide compound of titanium and iron for ferro-titanium is prepared in negative electrode deoxidation in molten salt system, this method deoxidation is not thorough and current efficiency is low, make the ferro-titanium of preparation in process for making, secondary pollution is caused to molten steel, affects steel quality.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of preparation technology of ferro-titanium is provided, production cost is low, and technical process is short, and deoxidation is thorough, at a lower temperature, by the oxygen more than 5% in ferro-titanium, adopt fused salt electrolysis technique to be down to below 100ppm, process energy consumption is low, current efficiency is high, improves the application of ferro-titanium in steel-making.
The present invention adopts following technical scheme to achieve these goals:
A preparation technology for ferro-titanium, comprises the following steps:
(1) ilmenite concentrate is smelted into titanium slag in electric furnace, then in electric furnace, add alkaline carbonate, and pass into oxygen stirring;
(2) take graphite as anode, with the molten iron of furnace bottom for negative electrode carries out electrolysis, produce metal titanium and described metal titanium and enter in the iron of melting and form liquid phase titanium iron alloy;
(3) under protection of inert gas, discharge molten iron and liquid phase titanium iron alloy, cool, obtain thick ferro-titanium;
(4) deoxygenation refining: with alkali metal chloride and titaniferous villiaumite for ionogen, with thick ferro-titanium for negative electrode, carbon steel is anode, electrolysis at 600-800 DEG C of temperature, and during electrolysis, cathode current density controls at 1.0-1.5A/cm
2, after electrolysis terminates, cathode product normal temperature takes out, and with deionized water wash several, the ionogen of fully cleaning adhesion, obtains ferro-titanium.
Preferably, the alkaline carbonate described in step (1) is sodium carbonate or salt of wormwood.
Preferably, the rare gas element described in step (3) is helium or argon gas.
Preferably, the alkali metal chloride described in step (4) is sodium-chlor or Repone K.
Preferably, the titaniferous villiaumite described in step (4) is TiF
4, K
2tiF
4.
The preparation technology of ferro-titanium of the present invention, first smelts titanium slag, and after titanium slag smelting terminates, add alkaline carbonate, pass into oxygen and titanium dioxide is converted into titanate, reaction formula is: 3TiO
2+ 2M
2cO
3=M
4ti
3o
8+ 2CO
2↑.The object passing into oxygen the titanium suboxide in titanium slag is all converted into titanium dioxide thus produces titanate, improves transformation efficiency.The object adding alkaline carbonate makes the titanium oxide in titanium slag be converted into titanate, and titanate dissociates in the melt containing titanium ion, thus realizes electrolytic functional.Primary product after titanate is alkalimetal oxide and titanium, alkalimetal oxide can transfer to again for alkaline carbonate under the effect of carbonic acid gas, thus make alkaline carbonate realize internal recycling, continue to promote that titanium dioxide is converted into the reaction of titanate, improve the recovery rate of ferro-titanium; Then with obtained thick ferro-titanium for soluble anode, with alkali-metal muriate and titaniferous villiaumite for ionogen, electrolysis at 600-800 DEG C of temperature, after titanium enters fused salt with the form of low valence titanium ion, separate out at negative electrode, thus the oxygen removed in thick ferro-titanium, reach refining effect, obtain ferro-titanium.
Compared with the prior art, beneficial effect of the present invention is as follows:
The preparation technology of ferro-titanium of the present invention, titanium oxide is made to be converted into titanate by adding a certain amount of alkali-metal carbonate in the melt after titanium slag is smelted and leading to oxygen, the system after smelting titanium slag is adopted directly to carry out the preparation of ferro-titanium, the heat of high temperature taken full advantage of in titanium slag smelting process carries out solid-liquid or reactive liquid solution, and the transformation efficiency that titanate is produced in reaction is high; Simultaneously, the current efficiency that the current efficiency of the titanate of electricity deoxidation melting prepares ferro-titanium compared with solid deoxidation is high, the liquid phase alloy produced is easy to discharge, and can realize continuous prodution operation, greatly shorten and prepare ferro-titanium technical process and reduce production energy consumption; Then adopt fused salt electrolysis technology, remove residual oxygen in thick ferro-titanium, improve the application of ferro-titanium in steel-making, at a lower temperature, by the oxygen more than 5% in ferro-titanium, fused salt electrolysis technique is adopted to be down to below 100ppm, deoxidation effect is good, and process energy consumption is low, and cost is low.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but the present invention is not limited only to these embodiments, and under the prerequisite not departing from present inventive concept, any improvement done all drops within protection scope of the present invention.
Embodiment 1:
A preparation technology for ferro-titanium, comprises the following steps:
(1) ilmenite concentrate is smelted into titanium slag in electric furnace, then in electric furnace, add sodium carbonate, and pass into oxygen stirring;
(2) take graphite as anode, with the molten iron of furnace bottom for negative electrode carries out electrolysis, produce metal titanium and described metal titanium and enter in the iron of melting and form liquid phase titanium iron alloy;
(3) under helium protection, discharge molten iron and liquid phase titanium iron alloy, cool, obtain thick ferro-titanium;
(4) deoxygenation refining: with sodium-chlor and TiF
4for ionogen, with thick ferro-titanium for negative electrode, carbon steel is anode, electrolysis at 600 DEG C of temperature, and during electrolysis, cathode current density controls at 1.0A/cm
2, after electrolysis terminates, cathode product normal temperature takes out, and with deionized water wash several, the ionogen of fully cleaning adhesion, obtains ferro-titanium.
Embodiment 2:
A preparation technology for ferro-titanium, comprises the following steps:
(1) ilmenite concentrate is smelted into titanium slag in electric furnace, then in electric furnace, add salt of wormwood, and pass into oxygen stirring;
(2) take graphite as anode, with the molten iron of furnace bottom for negative electrode carries out electrolysis, produce metal titanium and described metal titanium and enter in the iron of melting and form liquid phase titanium iron alloy;
(3) under argon shield, discharge molten iron and liquid phase titanium iron alloy, cool, obtain thick ferro-titanium;
(4) deoxygenation refining: with Repone K and K
2tiF
4for ionogen, with thick ferro-titanium for negative electrode, carbon steel is anode, electrolysis at 800 DEG C of temperature, and during electrolysis, cathode current density controls at 1.5A/cm
2, after electrolysis terminates, cathode product normal temperature takes out, and with deionized water wash several, the ionogen of fully cleaning adhesion, obtains ferro-titanium.
Claims (5)
1. a preparation technology for ferro-titanium, is characterized in that: comprise the following steps:
(1) ilmenite concentrate is smelted into titanium slag in electric furnace, then in electric furnace, add alkaline carbonate, and pass into oxygen stirring;
(2) take graphite as anode, with the molten iron of furnace bottom for negative electrode carries out electrolysis, produce metal titanium and described metal titanium and enter in the iron of melting and form liquid phase titanium iron alloy;
(3) under protection of inert gas, discharge molten iron and liquid phase titanium iron alloy, cool, obtain thick ferro-titanium;
(4) deoxygenation refining: with alkali metal chloride and titaniferous villiaumite for ionogen, with thick ferro-titanium for negative electrode, carbon steel is anode, electrolysis at 600-800 DEG C of temperature, and during electrolysis, cathode current density controls at 1.0-1.5A/cm
2, after electrolysis terminates, cathode product normal temperature takes out, and with deionized water wash several, the ionogen of fully cleaning adhesion, obtains ferro-titanium.
2. the preparation technology of ferro-titanium according to claim 1, is characterized in that: the alkaline carbonate described in step (1) is sodium carbonate or salt of wormwood.
3. the preparation technology of ferro-titanium according to claim 1, is characterized in that: the rare gas element described in step (3) is helium or argon gas.
4. the preparation technology of ferro-titanium according to claim 1, is characterized in that: the alkali metal chloride described in step (4) is sodium-chlor or Repone K.
5. the preparation technology of ferro-titanium according to claim 1, is characterized in that: the titaniferous villiaumite described in step (4) is TiF
4, K
2tiF
4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510063721.1A CN104694973A (en) | 2015-02-06 | 2015-02-06 | Process for preparing ferrotitanium alloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435647A (en) * | 2016-11-23 | 2017-02-22 | 北京科技大学 | Method for extracting titanium through titaniferous slag electrolysis |
| CN108138343A (en) * | 2016-07-20 | 2018-06-08 | 忠南大学校产学协力团 | Utilize electroreduction and the method for refining metal of electrorefining process |
| CN108384963A (en) * | 2018-04-20 | 2018-08-10 | 四川星明能源环保科技有限公司 | A kind of ferrotianium synthetic method and the method using titanium-containing blast furnace slag |
| CN109055994A (en) * | 2018-09-26 | 2018-12-21 | 北京科技大学 | A kind of method of titanium-containing blast furnace slag serialization electrolytic preparation high purity titanium |
| CN109913910A (en) * | 2019-04-08 | 2019-06-21 | 北京科技大学 | A kind of method that ilmenite carbon thermo-electrically solution prepares ferro-titanium |
| CN110656212A (en) * | 2019-10-15 | 2020-01-07 | 北京科技大学 | Method for preparing titanium alloy by joint production of blast furnace and electrolytic furnace |
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| WO2003046258A2 (en) * | 2001-11-22 | 2003-06-05 | Qit - Fer Et Titane Inc. | A method for electrowinning of titanium metal or alloy from titanium oxide containing compound in the liquid state |
| CN101597774A (en) * | 2009-06-29 | 2009-12-09 | 重庆大学 | A kind of method of utilizing iron tailings of low-grade vanadium titano to prepare ferro-titanium |
| CN102277595A (en) * | 2011-09-07 | 2011-12-14 | 北京科技大学 | Deoxidation refining method for titanium and iron alloy |
| CN102912381A (en) * | 2012-07-30 | 2013-02-06 | 江苏江南铁合金有限公司 | Novel method for preparing high titanium ferroalloy |
| CN103484721A (en) * | 2013-09-12 | 2014-01-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing ferro-titanium |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003046258A2 (en) * | 2001-11-22 | 2003-06-05 | Qit - Fer Et Titane Inc. | A method for electrowinning of titanium metal or alloy from titanium oxide containing compound in the liquid state |
| CN101597774A (en) * | 2009-06-29 | 2009-12-09 | 重庆大学 | A kind of method of utilizing iron tailings of low-grade vanadium titano to prepare ferro-titanium |
| CN102277595A (en) * | 2011-09-07 | 2011-12-14 | 北京科技大学 | Deoxidation refining method for titanium and iron alloy |
| CN102912381A (en) * | 2012-07-30 | 2013-02-06 | 江苏江南铁合金有限公司 | Novel method for preparing high titanium ferroalloy |
| CN103484721A (en) * | 2013-09-12 | 2014-01-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing ferro-titanium |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138343A (en) * | 2016-07-20 | 2018-06-08 | 忠南大学校产学协力团 | Utilize electroreduction and the method for refining metal of electrorefining process |
| CN106435647A (en) * | 2016-11-23 | 2017-02-22 | 北京科技大学 | Method for extracting titanium through titaniferous slag electrolysis |
| CN106435647B (en) * | 2016-11-23 | 2018-12-07 | 北京科技大学 | A kind of method of titanium-contained slag electroextraction titanium |
| CN108384963A (en) * | 2018-04-20 | 2018-08-10 | 四川星明能源环保科技有限公司 | A kind of ferrotianium synthetic method and the method using titanium-containing blast furnace slag |
| CN109055994A (en) * | 2018-09-26 | 2018-12-21 | 北京科技大学 | A kind of method of titanium-containing blast furnace slag serialization electrolytic preparation high purity titanium |
| CN109913910A (en) * | 2019-04-08 | 2019-06-21 | 北京科技大学 | A kind of method that ilmenite carbon thermo-electrically solution prepares ferro-titanium |
| CN110656212A (en) * | 2019-10-15 | 2020-01-07 | 北京科技大学 | Method for preparing titanium alloy by joint production of blast furnace and electrolytic furnace |
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Application publication date: 20150610 |
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