CN1264993C - Method for separating and extracting metal element from varadium-titanium magnetite - Google Patents
Method for separating and extracting metal element from varadium-titanium magnetite Download PDFInfo
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- CN1264993C CN1264993C CNB2005100201177A CN200510020117A CN1264993C CN 1264993 C CN1264993 C CN 1264993C CN B2005100201177 A CNB2005100201177 A CN B2005100201177A CN 200510020117 A CN200510020117 A CN 200510020117A CN 1264993 C CN1264993 C CN 1264993C
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- vanadium
- magnetite
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- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The present invention discloses a method for separating and extracting metallic elements from vanadium titano-magnetite, which comprises the process steps of agglomeration of mineral powder, metallization reduction and separation and retraction, namely that after being mixed, the mineral powder of the vanadium titano-magnetite, a reducer, an additive and a binding agent are pressed into a ball block with the diameter of 10 to 25mm, and after being dried at the temperature of 80 to 90DEG C, the ball block is loaded and reduced in a rotary hearth furnace to obtain a metallized product; finally, the prepared metallized product is thermally loaded in an electric furnace, and is melted and separated to obtain iron melt and a vanadium titanium slag melting component; a vanadium chrome slag melting component is extracted to obtain a vanadium chrome oxide; after vanadium and chrome are extracted, residual titanium slag is used as a raw material for producing titanium white powder. The present invention has the advantages of high reduction temperature, high reduction reaction speed, short reduction time, enhanced production efficiency, high metallization rate and recovery rate of the vanadium and titanium, little environmental pollution and obvious social and economic benefit.
Description
Technical field:
The present invention relates to a kind of treatment process of composite minerals, particularly a kind of from vanadium titano-magnetite the method for separation and Extraction metallic element.
Background technology:
Vanadium titano-magnetite is a kind of complex iron ore, contains beneficial elements such as iron, titanium, vanadium, chromium.For the comprehensive utilization of vanadium titano-magnetite, traditional method mainly is high temperature oxidation sodium roasting and two kinds of methods of high temperature reduction (Wang Wenzhong chief editor, " complex ore comprehensive utilization ").Wherein oxidation sodium leaching process is earlier with pelletizing sodiumizing-oxidizing roasting water logging vanadium extraction, soak behind the vanadium applied to pelletizing rotary kiln and reduce directly that----electric furnace is molten to be divided, can realize the comprehensive recovery of iron, vanadium, titanium, iron, vanadium, titanium recovery rate are respectively 85～89%, 58% and 74%, but Production Flow Chart is long, and the sodium agent consumes high, and pellet strength is poor after the vanadium extraction, easy efflorescence and ring formation when reducing in the rotary kiln, the vanadium titanium recovery rate is low; And that traditional high temperature reduction method is that iron ore pellets earlier gives heat (900-1000 ℃) through high temperature is fixed, reduce molten separation of iron and the vanadium titanium of dividing of----electric furnace through rotary kiln again, reclaim the vanadium titanium in molten iron blowing vanadium extraction or the slag, the rate of recovery of iron, vanadium, titanium is respectively 89%, 55% and 80%, realized that the ferrovanadium titanium comprehensively reclaims, reduce the sodium agent and consume, but still exist Production Flow Chart long (the pyrogenic processes processing of two steps), energy consumption height, the molten timesharing iron of electric furnace to be difficult to vanadium titanium separating effect instability, the vanadium titanium flow direction to control, shortcoming that the vanadium titanium recovery rate is low.
To be No. 02129512 Chinese patent application described " method and apparatus of separation of iron and titanium to prepare high titanium slag " " the coal-based direct reduction method " that propose contain briquet by layer 2-3 cloth reductase 12 0 minute in rotary hearth furnace with what system was shaken in rolling to application number, product after the reduction adopted through cooling normal temperature is broken to be separated with magnetic separation, have that pellet strength is poor, an energy consumption height and cost shortcoming of costliness too.Application number is " the cooled agglomerated pellet direct-reduction process " that No. 99115348.0 Chinese patent application described " comprehensive utilization vanadium titano-magnetite novel process " proposes, shortened technical process, having reduced the sodium agent consumes, improved the rate of recovery of three kinds of elements of ferrovanadium titanium, pellet strength is poor, the recovery time is long but still exist, the problem that production efficiency is low.
Summary of the invention:
The present invention is intended to overcome above-mentioned defective, provide a kind of from vanadium titano-magnetite the method for separation and Extraction metallic element, can direct production obtain reduced iron powder, high purity vanadium and rich titanium slag by this method, and technical process is short, energy consumption is low, ferrovanadium titanium recovery rate height.
Technical scheme of the present invention is as follows:
Of the present invention from vanadium titano-magnetite the method for separation and Extraction metallic element comprise following processing step: will the vanadium titano-magnetite breeze, reductive agent, additive, binding agent mix back compacting balling-up piece; The block vanadium titano-magnetite of the above-mentioned ball that is pressed into is packed in the rotary hearth furnace, be heated under 1200-1400 ℃ the temperature reductase 12 0-60 minute, obtain metallization and go back original product; The metallized product hot charging that makes is gone into furnace melting separate, obtain molten iron and vanadium titanium slag as steelmaking feed.
After described fusing separation circuit, from the molten vanadium titanium slag that divides, extract the oxide compound that obtains vanadium again, remaining titanium slag is as the raw material of titanium white production behind the extraction vanadium.
Described reductive agent is selected hard coal or various coal dusts such as brown coal or bituminous coal for use, and the amount of allocating into of reductive agent determines that according to the raw material iron level promptly reduced iron needs 105%～120% of theoretical consumption carbon amount.
Described vanadium titano-magnetite breeze and coal powder size account for 60～90% in-200 purposes.
Described binding agent is selected organic binder bond for use, and as polyvinyl alcohol and carboxymethyl cellulose etc., concentration is 0.3～1%.
Described additive is selected sodium salt or sylvite for use, and addition is 3～6% of a breeze amount.
Described electric furnace is selected electric arc furnace or induction furnace for use.
Described ball piece is meant and is pressed into the ball piece that diameter is 10～15mm.
Described vanadium titano-magnetite comprises vanadium titano-magnetite iron ore concentrate, ilmenite concentrate or other complex iron ores.
The present invention compares with prior aries such as high temperature oxidation sodium roasting reduction method, high temperature reduction method and cooled agglomerated pellet direct-reduction processes, and its advantage is:
1, because reduction temperature of the present invention directly reduces direct reduction temperature height such as (1100～1150 ℃) than shaft furnace (800～1200 ℃), rotary kiln (below 1050 ℃), cooled agglomerated pellet, reduction reaction speed is fast, recovery time is short, total reduction cycle than blast furnace (6～7h), rotary kiln (4～5h), tunnel furnace (4～6h), shaft furnace (3～4h), cooled agglomerated pellet reduces directly that (3～4h) production cycle shortens greatly;
2, degree of metalization of the present invention is up to more than 90%, and the vanadium titanium recovery rate is up to more than 90%; The production efficiency height, environmental pollution is little, social benefit and remarkable in economical benefits.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention.
Embodiment:
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
As shown in Figure 1, (composition is: TFe58.64%, FeO19.69%, TiO with the vanadium titano-magnetite concentrate
211.06%, V
2O
50.71%, Cr
2O
30.021%, Co0.010%, Ni0.0015%, SiO
21.68%, Al
2O
33.13%, CaO0.38%, MgO1.78%, S0.093%, P0.021%.Grinding particle size is :-200 order grade amounts 85%.), (composition is coal dust: ash content 9.93%, volatile matter 10.49%, fixed carbon 78.19%, calorific value 30.75MJ/kg; The 230kg/t iron ore concentrate), additive (Na coal powder size is :-120 orders account for 86%, and the coal dust amount of allocating into is:
2CO
3The amount of allocating into be breeze 3～5%), binding agent (carboxymethyl cellulose, concentration is: 0.3～0.5%, consumption be breeze 0.025～0.03%) to be pressed into diameter after being mixed in proportion be the spherical of 10～15mm, after 80 ℃ of following dryings, pack in the rotary hearth furnace, furnace is controlled at 1200 ℃, after the reduction in 60 minutes, cooling is taken out, and total reduction cycle is 150 minutes, and degree of metalization reaches 95%, fusing separates in electric furnace then, obtain making steel behind the desulfurizing iron, vanadium titanium slag composition is: FeO 1.23%, TiO
255% ±, V
2O
53.63%.Can be used as and extract the vanadium titanium material.The molten back iron recovery that divides is more than 96%, and the vanadium titanium recovery rate is greater than 95%.
Embodiment 2
As shown in Figure 1, (composition is: TFe59.98%, FeO20.06%, TiO with the vanadium titano-magnetite concentrate
210.97%, V
2O
50.76%, Cr
2O
30.023%, Co0.012%, Ni0.011%, SiO
21.52%, Al
2O
33.05%, CaO0.19%, MgO1.70%, S0.018%, P0.024%.The iron ore concentrate granularity is :-200 order grade amounts 84～87%.), coal dust (composition is: ash content 8.62%, volatile matter 17.73%, fixed carbon 73.47%, S 0.56%, granularity is-200 order grade amounts 70～75%, the coal dust amount of allocating into is the 260kg/t iron ore concentrate), additive (Na
2CO
3The amount of allocating into be breeze 4～6%), binding agent (carboxymethyl cellulose, concentration is about 0.5%, consumption be breeze 0.03～0.035%) to be pressed into diameter after being mixed in proportion be the spherical of 10～15mm, after＜90 ℃ of following dryings, pack in the rotary hearth furnace, temperature is about 1300 ℃ in the stove, 50 minutes recovery times, cooling is taken out, and total reduction cycle is 125 minutes, and degree of metalization reaches 95%, fusing separates in electric furnace then, obtain making steel behind the desulfurizing iron, vanadium titanium slag composition is: FeO 1.29%, TiO
256% ±, V
2O
53.89%.Can be used as and extract the vanadium titanium material.The molten back iron recovery that divides is more than 96%, and the vanadium titanium recovery rate is greater than 95%.
Embodiment 3
As shown in Figure 1, (composition is: TFe56.36%, FeO23.67%, TiO with the vanadium titano-magnetite concentrate
213.58%, V
2O
50.55%, Cr
2O
30.002%, Co0.014%, Ni0.008%, SiO
21.17%, Al
2O
33.86%, CaO0.21%, MgO3.03%, S0.24%, grinding particle size is :-200 order grade amounts 85%.), coal dust (brown coal of high volatile, composition is: C58.20%, V32.63%, A8.44%, S 0.83%; Coal powder size is :-120 orders account for 80%～85%; The 280kg/t iron ore concentrate), additive (Na the coal dust amount of allocating into is:
2CO
3, the amount of allocating into be breeze 3～5%), binding agent (polyvinyl alcohol, concentration is: 1%, consumption be breeze 0.03～0.035%) to be pressed into diameter after being mixed in proportion be the spherical of 10～15mm, in the rotary hearth furnace of packing into after the drying, furnace is controlled at 1400 ℃, after the reduction in 35 minutes, cooling is taken out, and total reduction cycle is 90 minutes, and degree of metalization reaches 93%, fusing separates in electric furnace then, obtain making steel behind the desulfurizing iron, vanadium titanium slag composition is: FeO 1.59%, TiO
256%, V
2O
52.27%.Can be used as and extract the vanadium titanium material.The molten back iron recovery that divides is more than 96%, and the vanadium titanium recovery rate is greater than 95%.
Claims (8)
1. the method for a separation and Extraction metallic element from vanadium titano-magnetite is characterized in that, comprises following processing step:
Vanadium titano-magnetite breeze, reductive agent, additive, binding agent are mixed back compacting balling-up piece;
The block vanadium titano-magnetite of the above-mentioned ball that is pressed into is packed in the rotary hearth furnace, be heated under 1200-1400 ℃ the temperature reductase 12 0-60 minute, obtain metallization and go back original product;
The metallized product hot charging that makes is gone into furnace melting separate, obtain molten iron and vanadium titanium slag as steelmaking feed.
2. according to claim 1 from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that, after described fusing separation circuit, from the molten vanadium titanium slag that divides, further extract the oxide compound that obtains vanadium, remaining titanium slag is as the raw material of producing titanium dioxide.
3. according to claim 1 from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that, described reductive agent is the coal dust of hard coal, brown coal or bituminous coal, and the amount of allocating into of reductive agent determines that according to the raw material iron level promptly reduced iron needs the 105-120% of theoretical consumption carbon amount.
According among the claim 1-3 each described from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that granularity in described breeze and the coal dust-200 order is following accounts for 60-90%.
According among the claim 1-3 each described from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that described binding agent is selected organic binder bond polyvinyl alcohol or carboxymethyl cellulose for use, concentration is 0.3-1%.
According among the claim 1-3 each described from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that described additive is sodium salt or sylvite, addition is the 3-6% of breeze amount.
According among the claim 1-3 each described from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that described electric furnace is selected electric arc furnace or induction furnace for use.
According among the claim 1-3 each described from vanadium titano-magnetite the method for separation and Extraction metallic element, it is characterized in that the diameter of described ball piece is 10-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100201177A CN1264993C (en) | 2005-01-07 | 2005-01-07 | Method for separating and extracting metal element from varadium-titanium magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100201177A CN1264993C (en) | 2005-01-07 | 2005-01-07 | Method for separating and extracting metal element from varadium-titanium magnetite |
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| CN1264993C true CN1264993C (en) | 2006-07-19 |
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Families Citing this family (33)
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| CN100357470C (en) * | 2005-09-27 | 2007-12-26 | 梅卫东 | Method for preparing ferro-titantium, steel and ferrovanadium from vanadium-titantium iron headings |
| CN100552057C (en) * | 2005-12-15 | 2009-10-21 | 鲜帆 | The cold fixed molten production method of dividing of the direct electric reduction furnace of charcoal pelletizing that contains of vanadium titano-magnetite |
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| CN111500812B (en) * | 2020-05-08 | 2022-02-18 | 张岩 | Method for separating vanadium, titanium and iron from vanadium-titanium magnetite concentrate |
| CN111748687A (en) * | 2020-07-08 | 2020-10-09 | 酒泉钢铁(集团)有限责任公司 | Coal-based reduction process for vanadium titano-magnetite |
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-
2005
- 2005-01-07 CN CNB2005100201177A patent/CN1264993C/en not_active Ceased
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| CN1641045A (en) | 2005-07-20 |
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Addressee: Sichuan Lomon Mining & Metallurgy Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |