CN103949335A - Method for recleaning of vanadium-titanium magnetite concentrate by using alkaline leaching, grading and magnetic separation - Google Patents

Method for recleaning of vanadium-titanium magnetite concentrate by using alkaline leaching, grading and magnetic separation Download PDF

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CN103949335A
CN103949335A CN201410166217.XA CN201410166217A CN103949335A CN 103949335 A CN103949335 A CN 103949335A CN 201410166217 A CN201410166217 A CN 201410166217A CN 103949335 A CN103949335 A CN 103949335A
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concentrate
magnetic separation
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CN103949335B (en
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宋仁峰
郭客
刘政东
韩晓东
曹新全
李化
朱大鹏
刘晓明
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Angang Group Mining Co Ltd
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Abstract

The invention discloses a method for recleaning of a vanadium-titanium magnetite concentrate by using alkaline leaching, grading and magnetic separation. The method comprises the following steps of placing the vanadium-titanium magnetite concentrate into alkali solution with the mass concentration of 5-52%, reacting for 0.5-5 hours in an alkaline leaching mode at 280-370 DEG C, and filtering to obtain filtrate and an alkaline leaching filter cake A; adding water into A to make mine pulp with the mass concentration of 20-25% and feeding into a swirler for grading to obtain overflows and setting sand B; adding water into B to make mine pulp with the mass concentration of 30-36% and performing magnetic separation to obtain final iron ore concentrate with the TFe content range being 63-68% and final titanium concentrate with the TiO2 content range being 35-50%. The method has the advantages that the efficient separation for the vanadium-titanium magnetite concentrate is realized, the alkaline consumption is low, the contents of impurities such as Al and Si, particularly harmful impurities of TiO2 and S, which enter a blast furnace are reduced, the use coefficient of the blast furnace is improved, the discharge of blast furnace slag is reduced, the puddling cost is reduced, and the problems of high S content and severe pollution in the smelting process are solved; the comprehensive use rate of the titanium resources is improved.

Description

The method of utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again
Technical field
The present invention relates to a kind of ore-dressing technique of v-ti magnetite concentrate, the method for relating in particular to and a kind ofly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again.
Background technology
Vanadium titano-magnetite is a kind of grandidierite of multiple metallic element, is the magnetic iron ore taking iron content, vanadium, titanium as main symbiosis.And v-ti magnetite concentrate is one of product of vanadium titano-magnetite process ore dressing acquisition, wherein vanadium is composed and is stored in titanomagnetite with isomorph, displacement high price iron ion.Titanomagnetite is oikocryst mineral (Fe 3o 4) and chadacryst ore deposit [ulvite 2FeOTiO 2, ilmenite FeOTiO 2, aluminum-spinel (Mg, Fe) (Al, Fe) 2o 4] form complex.For example, Chinese Panzhihua Region Midi Concentrator v-ti magnetite green ore and select v-ti magnetite concentrate after iron chemistry multielement analysis to the results are shown in Table 1, v-ti magnetite green ore and vanadium titano-magnetite concentrate material phase analysis result are respectively in table 2 and table 3.
The Chinese Panzhihua Region of table 1 Midi Concentrator raw ore and v-ti magnetite concentrate chemistry multielement analysis result
Element TFe FeO mFe S Fe 2O 3 TiO 2 V 2O 5
Raw ore 29.53 21.36 20.20 0.631 17.70 10.54 0.278
Concentrate 54.01 32.42 51.16 0.574 40.97 12.67 0.61
Element SiO 2 Al 2O 3 CaO MgO Co P As
Raw ore 22.80 7.65 6.36 7.23 0.02 0.015 <0.01
Concentrate 3.21 3.30 0.98 2.90 0.02 0.008 <0.010
The Chinese Panzhihua Region of table 2 Midi Concentrator v-ti magnetite green ore titanium, iron chemical phase analysis result
The Chinese Panzhihua Region of table 3 Midi Concentrator vanadium titano-magnetite concentrate titanium, iron chemical phase analysis result
Vanadium titano-magnetite aboundresources in the world, whole world reserves reach more than 40,000,000,000 tons, and reserves in China reaches 98.3 hundred million tons.In v-ti magnetite ore, iron is mainly composed and is stored in titanomagnetite, the TiO in ore 2main tax is stored in granular ilmenite and titanomagnetite.Generally, approximately 57% titanium is composed and is stored in titanomagnetite (mFeTiO 3nFe 3o 4) in, approximately 40% titanium is composed and is stored in ilmenite (FeTiO 3) in, because vanadium titano-magnetite ore composition is complicated, character is special, thereby the comprehensive utilization of this class ore is the international a great problem always thoroughly not solving.This occurrence characteristics of vanadium titano-magnetite mineral has determined to adopt physical upgrading method cannot realize from the source of ore effective separation of titanium, iron, cause v-ti magnetite ore after physical upgrading, iron concentrate grade low (TFe<55%), the titanium in iron ore concentrate enters blast furnace slag (TiO completely at ironmaking processes 2content reaches more than 22%) formation vitreum, TiO 2lost actively and cannot economic recovery, meanwhile, titanium recovery rate is low only has 18%.Therefore sort titanium iron ore by the beneficiation method of physics and greatly reduce titanium and the iron value of utilization separately.
China is that first comprehensively extracts the country of iron, vanadium, titanium from complicated vanadium titano-magnetite with commercial scale in the world, but characteristic is deposited in the tax that can not fundamentally change iron, the fine and close symbiosis of titanium due to general physical method, therefore, adopt the physical upgrading methods such as common gravity separation method, magnetic method, floatation to carry out titanium, iron separation, efficiency is low, is difficult to select ilmenite concentrate of high grade and that impurity is few or iron ore concentrate; Meanwhile, TiO 2organic efficiency is not high, v-ti magnetite green ore after Mineral separation, approximately 54% TiO 2enter iron ore concentrate, these TiO 2after blast furnace process, almost all enter slag phase, form TiO 2the blast furnace slag of content 20~24%; In addition, because the impurity contents such as the S in iron ore concentrate, Si, Al are also too high, above-mentioned reason not only causes that steelmaking furnace usage factor is low, energy consumption is large, titanium resource waste, and amount of slag is large, environmental pollution is serious.
CN2011100879566 discloses " a kind of beneficiation method of ilmenite ", be by v-ti magnetite green ore through ore grinding, alkali soak pretreatment, filtration, magnetic separation obtains the method for ilmenite concentrate and iron ore concentrate after ore grinding again.The method is by iron content 32.16% with containing TiO 212.11% v-ti magnetite green ore soaks pretreatment, filtration, magnetic separation processing after ore grinding again by ore grinding, alkali, has formed iron content 59.30% iron ore concentrate and containing TiO 220.15% ilmenite concentrate.Because the method is for ilmenite raw ore, raw ore SiO 2, Al 2o 3, the gangue mineral content such as CaO, MgO is high, the process that alkali soaks will preferentially occur in SiO 2, Al 2o 3with it mineral, alkali soaks and in process, has formed the alkali similar to titanium and soak rear compound, and the NaOH alkali number that alkali soaks the consumption of ferrotianium raw ore is 469Kg/t raw ore, and cost is high; And ferrotianium raw ore alkali soaks the titanium compound of rear formation, soak the compound of the silicon of rear formation with gangue mineral alkali such as quartz, want in follow-up magnetic separation to realize that effectively to separate be very difficult, this has also restricted ferrotianium raw ore alkali and has soaked the raising of rear iron concentrate grade and ilmenite concentrate grade.Meanwhile, the method adopts twice grinding process to change mineral surfaces physicochemical properties, has increased complexity and the process cost of the method.In a word, by this kind of procedure complexity, and in processing procedure, quantity of alkali consumption is large, cost is high; Meanwhile, cannot obtain more high-grade iron ore concentrate and ilmenite concentrate.
Summary of the invention
In order to overcome the deficiency of above-mentioned beneficiation method, technical problem to be solved by this invention is on the basis of the effective combination of physics and chemistry beneficiation method, provide a kind of cost low, reclaim quality and efficiency is high, technique is simple, and good operability utilize that alkali soaks, method that v-ti magnetite concentrate is selected in classification, magnetic separation again, realize titanium, iron in v-ti magnetite concentrate have efficiently been separated, improve and entered stokehold iron grade, reduced and enter blast furnace TiO 2, the impurity such as S, Si, Al content, improve the capacity factor of a blast furnace, reduce the discharge capacity of blast furnace slag, reduced ironmaking cost, improve TiO simultaneously 2comprehensive utilization of resources rate, reduces environmental pollution.
In order to realize object of the present invention, technical scheme of the present invention is achieved in that
The method of of the present inventionly a kind ofly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that comprising the steps:
1) alkali soaks
Be 50%~55%, TiO by TFe content range 2content range is 10%~15%, SiO 2content is 3%~6%, Al 2o 3content is 3%~6%, the v-ti magnetite concentrate of S content >0.5%, be placed in mass concentration and be 5%~52% aqueous slkali, at the temperature of 280 DEG C~370 DEG C, alkali soaks reaction 0.5~5 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 20%~25% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) magnetic separation
By step 2) in the sand setting B ore pulp of making mass concentration 30%~36% that adds water carry out magnetic separation; sort out magnetic concentrate D and magnetic tailing E; described magnetic concentrate D is that TFe content range is 63%~68% final iron ore concentrate, and magnetic tailing E and overflow C merge into TiO 2content range is 35%~50% final ilmenite concentrate.
Described aqueous slkali is any one in NaOH or the KOH aqueous solution, NaOH and KOH mixed aqueous solution.
Described magnetic separation adopts the drum magnetic separator of 0.13T~0.16T to carry out magnetic separation.
Described magnetic separation adopts the magnetic dewater cone of 0.03T~0.05T to carry out magnetic separation.
Described magnetic separation adopts respectively the drum magnetic separator of 0.13T~0.16T and 0.03T~0.05T magnetic dewater cone to carry out two stages of magnetic separation.
Advantage of the present invention is:
The method that method synthesis of the present invention uses that alkali soaks, v-ti magnetite concentrate is selected in classification and magnetic separation again, has realized titanium in v-ti magnetite concentrate, iron efficiently separates; In isolated iron ore concentrate, S content significantly reduces simultaneously, by more than 0.50% being down to and being less than 0.10%, SiO 2content is down to below 3% by 3%~6%, Al 2o 3content is down to below 3% by 3%~6%, for subsequent smelting has been created better condition.
The process that alkali soaks has been carried out chemical reaction to elements such as Ti, S, Si, Al in v-ti magnetite concentrate, has formed corresponding salt.Different from v-ti magnetite concentrate, SiO in ilmenite raw ore 2content (>20%) and Al 2o 3content (>7%) is far away higher than SiO in v-ti magnetite concentrate 2content (<6%) and Al 2o 3content (<6%), soaks in ilmenite raw ore process at alkali, and the process of soaking due to alkali will preferentially occur in SiO 2, Al 2o 3on mineral, make alkali soak v-ti magnetite concentrate and soak ferrotianium raw ore alkali consumption still less than alkali, better effects if.For example, while soaking with NaOH alkali, the alkali number that the present invention consumes is less than 100kg/t concentrate, and the alkali number 469kg/t raw ore that soaks raw ore consumption than alkali has reduced more than 4.6 times.
Cyclone is pressed granularity and the gravity grading of mineral, and alkali soaks the titanium compound of rear generation than the fine size of iron mineral, and proportion is little, the difference of specific gravity of titanium, iron is larger, has realized effective separation of titanium, iron.
Add magnetic separation, magnetic separation utilizes different minerals magnetic contrast to carry out sorting.Alkali soaks titanium is dissociateed from magnetic iron ore lattice, titanium has generated non-magnetic titanium compound, therefore according to magnetic iron ore and titanium compound magnetic contrast, can adopt simple magnetic method that ferrotianium is separated, make iron concentrate grade bring up to 63%~68% by 50%~55%, in iron ore concentrate, be less than 0.1%, SiO containing S amount simultaneously 2and Al 2o 3content is all less than 3%, TiO 2content is down to below 6% by 12%; Meanwhile, can also obtain TiO 2content is 35%~50% ilmenite concentrate.Adopt the method to realize titanium, iron are effectively separated, reduce and enter blast furnace TiO 2, the impurity such as S, Si, Al content, improve the capacity factor of a blast furnace, reduce the discharge capacity of blast furnace slag, reduced ironmaking cost, improve titanium resource comprehensive utilization ratio simultaneously.
Brief description of the drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is the two stages of magnetic separation process chart that magnetic separation of the present invention adopts drum magnetic separator and magnetic dewater cone.
Fig. 3 is the process chart that magnetic separation of the present invention adopts another embodiment of two stages of magnetic separation of drum magnetic separator and magnetic dewater cone.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Embodiment 1:
As shown in Figure 1.
1) alkali soaks
Be 50.3%, TiO by TFe content 2content is 14.9%, SiO 2content is 4.95%, Al 2o 3content is 4.98%, the v-ti magnetite concentrate of S content 0.82%, be placed in mass concentration and be 25% NaOH aqueous slkali, at the temperature of 360 DEG C, alkali soaks reaction 3 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 83kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 20% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the drum magnetic separator of 0.13T carries out magnetic separation for the ore pulp of making mass concentration 34%, obtain respectively magnetic concentrate D, magnetic tailing E, described magnetic concentrate D is that TFe content is 67.6% final iron ore concentrate (SiO 2content is 0.36%, Al 2o 3content is 1.12%, S content is 0.01%), described magnetic tailing E and overflow C merge into TiO 2content is 40.2% final ilmenite concentrate.
Embodiment 2:
As shown in Figure 1.
1) alkali soaks
Be 51.6%, TiO by TFe content 2content is 13.7%, SiO 2content is 4.88%, Al 2o 3content is 4.96%, the v-ti magnetite concentrate of S content 0.78%, be placed in mass concentration and be 15% NaOH aqueous slkali, at the temperature of 310 DEG C, alkali soaks reaction 2 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 80kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 21% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the drum magnetic separator of 0.15T carries out magnetic separation for the ore pulp of making mass concentration 31%, obtain respectively magnetic concentrate D, magnetic tailing E, described magnetic concentrate D is that TFe content is 65.1% final iron ore concentrate (SiO 2content is 0.51%, Al 2o 3content is 1.35%, S content is 0.02%), described magnetic tailing E and overflow C merge into TiO 2content is 39.9% final ilmenite concentrate.
Embodiment 3:
As shown in Figure 1.
1) alkali soaks
Be 50.6%, TiO by TFe content 2content is 14.3%, SiO 2content is 4.55%, Al 2o 3content is 4.68%, the v-ti magnetite concentrate of S content 0.72%, be placed in mass concentration and be 45% NaOH aqueous slkali, at the temperature of 290 DEG C, alkali soaks reaction 4 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 89kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 22% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the magnetic dewater cone of 0.05T carries out magnetic separation for the ore pulp of making mass concentration 31%, respectively magnetic concentrate D, magnetic tailing E, magnetic concentrate D is that TFe content is 63.6% final iron ore concentrate (SiO 2content is 1.61%, Al 2o 3content is 1.49%, S content is 0.04%), described magnetic tailing E and overflow C merge into TiO 2content is 46.5% final ilmenite concentrate.
Embodiment 4:
As shown in Figure 1.
1) alkali soaks
Be 53.5%, TiO by TFe content 2content is 11.7%, SiO 2content is 4.75%, Al 2o 3content is 4.93%, the v-ti magnetite concentrate of S content 0.77%, be placed in mass concentration and be 50% NaOH aqueous slkali, at the temperature of 370 DEG C, alkali soaks reaction 1 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 79kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 24% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the magnetic dewater cone of 0.05T carries out magnetic separation for the ore pulp of making mass concentration 33%, respectively magnetic concentrate D, magnetic tailing E, magnetic concentrate D is that TFe content is 66.8% final iron ore concentrate (SiO 2content is 1.24%, Al 2o 3content is 1.65%, S content is 0.01%), described magnetic tailing E and overflow C merge into TiO 2content is 43.4% final ilmenite concentrate.
Embodiment 5:
As shown in Figure 2.
1) alkali soaks
Be 52.7%, TiO by TFe content 2content is 12.2%, SiO 2content is 3.93%, Al 2o 3content is 4.64%, the v-ti magnetite concentrate of S content 0.71%, be placed in mass concentration and be 35% KOH aqueous slkali, at the temperature of 350 DEG C, alkali soaks reaction 1.5 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, KOH consumption 80kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 20% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) two stages of magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the drum magnetic separator of 0.13T carries out a stages of magnetic separation for the ore pulp of making mass concentration 32%, obtain a stages of magnetic separation concentrate D1 and a stages of magnetic separation mine tailing E1, it is that the magnetic dewater cone of 0.03T carries out two stages of magnetic separation that a stages of magnetic separation concentrate D1 who is 31.5% by mass concentration feeds field intensity, obtain two stages of magnetic separation concentrate D2 and two stages of magnetic separation mine tailing E2, two described stages of magnetic separation concentrate D2 are that TFe content is 67.9% final iron ore concentrate (SiO 2content is 0.30%, Al 2o 3content is 1.13%, S content is 0.01%), described two stages of magnetic separation mine tailing E1, E2 and overflow C merge into TiO 2content is 36.2% final ilmenite concentrate.
Embodiment 6:
As shown in Figure 3.
1) alkali soaks
Be 54.1%, TiO by TFe content 2content is 10.9%, SiO 2content is 3.55%, Al 2o 3content is 4.42%, the v-ti magnetite concentrate of S content 0.69%, be placed in mass concentration and be 51% KOH aqueous slkali, at the temperature of 360 DEG C, alkali soaks reaction 1 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, KOH consumption 81kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 5.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 25% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) two stages of magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the magnetic dewater cone of 0.05T carries out a stages of magnetic separation for the ore pulp of making mass concentration 30.5%, obtain a stages of magnetic separation concentrate D1 and a stages of magnetic separation mine tailing E1, it is that the drum magnetic separator of 0.12T carries out two stages of magnetic separation that a stages of magnetic separation concentrate D1 who is 33.5% by mass concentration feeds field intensity, obtain two stages of magnetic separation concentrate D2 and two stages of magnetic separation mine tailing E2, two described stages of magnetic separation concentrate D2 are that TFe content is 67.1% final iron ore concentrate (SiO 2content is 0.31%, Al 2o 3content is 1.15%, S content is 0.01%), described two stages of magnetic separation mine tailing E1, E2 and overflow C merge into TiO 2content is 48.8% final ilmenite concentrate.
Embodiment 7:
As shown in Figure 3.
1) alkali soaks
Be 54.3%, TiO by TFe content 2content is 11.3%, SiO 2content is 3.65%, Al 2o 3content is 4.47%, the v-ti magnetite concentrate of S content 0.66%, the aqueous slkali that be placed in NaOH mass concentration and be 35%, KOH mass concentration is 15%, at the temperature of 300 DEG C, alkali soaks reaction 1.5 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 30kg/t is to ore deposit, and KOH consumption 50kg/t is to ore deposit, described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1 and embodiment 5.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 25% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C.
3) two stages of magnetic separation
By step 2) in sand setting B add water that to feed field intensity be that the magnetic dewater cone of 0.05T carries out a stages of magnetic separation for the ore pulp of making mass concentration 30.5%, obtain a stages of magnetic separation concentrate D1 and a stages of magnetic separation mine tailing E1, it is that the drum magnetic separator of 0.12T carries out two stages of magnetic separation that a stages of magnetic separation concentrate D1 who is 33.5% by mass concentration feeds field intensity, obtain two stages of magnetic separation concentrate D2 and two stages of magnetic separation mine tailing E2, two described stages of magnetic separation concentrate D2 are that TFe content is 66.7% final iron ore concentrate (SiO 2content is 0.35%, Al 2o 3content is 1.12%, S content is 0.01%), described two stages of magnetic separation mine tailing E1, E2 and overflow C merge into TiO 2content is 47.9% final ilmenite concentrate.

Claims (5)

1. a method of utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that comprising the steps:
1) alkali soaks
Be 50%~55%, TiO by TFe content range 2content range is 10%~15%, SiO 2content is 3%~6%, Al 2o 3content is 3%~6%, the v-ti magnetite concentrate of S content >0.5%, be placed in mass concentration and be 5%~52% aqueous slkali, at the temperature of 280 DEG C~370 DEG C, alkali soaks reaction 0.5~5 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 20%~25% and feed cyclone and carry out classification, classification goes out sand setting B and overflow C;
3) magnetic separation
By step 2) in the sand setting B ore pulp of making mass concentration 30%~36% that adds water carry out magnetic separation; sort out magnetic concentrate D and magnetic tailing E; described magnetic concentrate D is that TFe content range is 63%~68% final iron ore concentrate, and magnetic tailing E and overflow C merge into TiO 2content range is 35%~50% final ilmenite concentrate.
2. the method for according to claim 1ly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that described aqueous slkali is any one in NaOH or the KOH aqueous solution, NaOH and KOH mixed aqueous solution.
3. the method for according to claim 1ly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that described magnetic separation adopts the drum magnetic separator of 0.13T~0.16T to carry out magnetic separation.
4. the method for according to claim 1ly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that described magnetic separation adopts the magnetic dewater cone of 0.03T~0.05T to carry out magnetic separation.
5. the method for according to claim 1ly utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and magnetic separation again, is characterized in that described magnetic separation adopts respectively the drum magnetic separator of 0.13T~0.16T and 0.03T~0.05T magnetic dewater cone to carry out two stages of magnetic separation.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858047A (en) * 2015-06-12 2015-08-26 鞍钢集团矿业公司 Method for recleaning vanadium-titanium magnetite concentrates by oxidation alkaline leaching, grading and magnetic separation
CN104878221A (en) * 2015-06-12 2015-09-02 鞍钢集团矿业公司 Method for utilizing oxidation alkaline leaching and desliming to re-concentrate vanadium-titanium magnetite concentrates
CN105013602A (en) * 2015-06-12 2015-11-04 鞍钢集团矿业公司 Vanadium-titanium magnetite concentrate re-concentration method achieved through oxidation alkaline leaching, classification and reselection

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567026A (en) * 1984-10-24 1986-01-28 Internorth, Inc. Method for extraction of iron aluminum and titanium from coal ash
US20010051120A1 (en) * 1997-10-17 2001-12-13 Marcelo De Matos Process for the production titanium concentrate having a chemical composition similar to ilmenite from highly impure anatase ores
CN101037722A (en) * 2007-04-28 2007-09-19 中南大学 Method for preparing puddling iron concentrate by high-alumina iron ore
CN102181626A (en) * 2011-04-08 2011-09-14 北京矿冶研究总院 Beneficiating method for ilmenite
CN102260786A (en) * 2011-07-04 2011-11-30 彭海洋 Extraction method of sefstromite
CN103276204A (en) * 2013-05-17 2013-09-04 中国科学院过程工程研究所 Method for preparing titanium slag by wet-processing on vanadium-titanium magnetite concentrates
CN103526051A (en) * 2013-09-26 2014-01-22 攀钢集团攀枝花钢铁研究院有限公司 Method for separating iron, vanadium and titanium from schreyerite

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567026A (en) * 1984-10-24 1986-01-28 Internorth, Inc. Method for extraction of iron aluminum and titanium from coal ash
US20010051120A1 (en) * 1997-10-17 2001-12-13 Marcelo De Matos Process for the production titanium concentrate having a chemical composition similar to ilmenite from highly impure anatase ores
CN101037722A (en) * 2007-04-28 2007-09-19 中南大学 Method for preparing puddling iron concentrate by high-alumina iron ore
CN102181626A (en) * 2011-04-08 2011-09-14 北京矿冶研究总院 Beneficiating method for ilmenite
CN102260786A (en) * 2011-07-04 2011-11-30 彭海洋 Extraction method of sefstromite
CN103276204A (en) * 2013-05-17 2013-09-04 中国科学院过程工程研究所 Method for preparing titanium slag by wet-processing on vanadium-titanium magnetite concentrates
CN103526051A (en) * 2013-09-26 2014-01-22 攀钢集团攀枝花钢铁研究院有限公司 Method for separating iron, vanadium and titanium from schreyerite

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CN104858047A (en) * 2015-06-12 2015-08-26 鞍钢集团矿业公司 Method for recleaning vanadium-titanium magnetite concentrates by oxidation alkaline leaching, grading and magnetic separation
CN104878221A (en) * 2015-06-12 2015-09-02 鞍钢集团矿业公司 Method for utilizing oxidation alkaline leaching and desliming to re-concentrate vanadium-titanium magnetite concentrates
CN105013602A (en) * 2015-06-12 2015-11-04 鞍钢集团矿业公司 Vanadium-titanium magnetite concentrate re-concentration method achieved through oxidation alkaline leaching, classification and reselection

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