CN104959217A - Method for reselecting vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, classification and reverse flotation - Google Patents

Method for reselecting vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, classification and reverse flotation Download PDF

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Publication number
CN104959217A
CN104959217A CN201510320559.7A CN201510320559A CN104959217A CN 104959217 A CN104959217 A CN 104959217A CN 201510320559 A CN201510320559 A CN 201510320559A CN 104959217 A CN104959217 A CN 104959217A
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concentrate
content
reverse flotation
classification
smart
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郭客
马旭峰
巴红
张志强
李之奇
刘政东
陈巍
宋仁峰
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Angang Group Mining Co Ltd
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Angang Group Mining Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
    • 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 invention relates to a method for reselecting a vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, classification and reverse flotation. The method comprises the following steps: the vanadium-titanium magnetite concentrate is put into alkaline solution; an oxidizing agent is added to perform the alkaline leaching reaction for 0.5-2 hours at a temperature of 220-330 DEG C; a reactant is filtered to obtain filtrate and an alkaline leaching filter cake A; and the alkaline leaching filter cake A is added with water to prepare pulp to perform the classification and the reverse flotation reselection operation. The method has the following advantages: the introduction of O2 or H2O2 in the oxidization alkaline leaching enables an S-contained compound to be oxidized, so that the reaction is accelerated, the reaction time is shortened, and the reaction temperature, the energy consumption and the equipment investment are reduced; and as an iron ore concentrate with the TFe content of 65-70% and a titanium ore concentrate with the TiO2 content of 50-70% are selected out, the high-efficiency titanium and iron separation of the vanadium-titanium magnetite concentrate is realized, the contents of such impurities as TiO2, S, Si and Al entering a blast furnace are reduced, the utilization coefficient of the blast furnace is increased, and the comprehensive utilization rate of a titanium resource is improved.

Description

Alkali oxide leaching, classification and reverse flotation is utilized to select the method for v-ti magnetite concentrate again
Technical field
The present invention relates to a kind of ore-dressing technique of v-ti magnetite concentrate, particularly relate to a kind of method utilizing alkali oxide leaching, classification and reverse flotation to select v-ti magnetite concentrate again.
Background technology
Vanadium titano-magnetite is a kind of grandidierite of multiple metallic element, is based on the magnetic iron ore of the symbiosis of iron content, vanadium, titanium.And one of v-ti magnetite concentrate product that to be vanadium titano-magnetite obtain through ore dressing, wherein vanadium is composed with isomorph and is stored in titanomagnetite, displacement ferric 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] complex that formed.Such as, Chinese Panzhihua Region Midi Concentrator v-ti magnetite green ore and the chemistry of the v-ti magnetite concentrate after selecting iron multielement analysis the results are shown in Table 1, and v-ti magnetite green ore and vanadium titano-magnetite concentrate material phase analysis result are respectively in table 2 and table 3.
Table 1 Chinese Panzhihua Region 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 0.27 8
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
Table 2 Chinese Panzhihua Region Midi Concentrator v-ti magnetite green ore titanium, iron chemical phase analysis result
Table 3 Chinese Panzhihua Region 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, the titanium of about 57% is composed and is stored in titanomagnetite (mFeTiO 3nFe 3o 4) in, the titanium of about 40% is composed and is stored in ilmenite (FeTiO 3) in, because vanadium titano-magnetite ore composition is complicated, character is special, and thus the comprehensive utilization of this kind of ore is the international a great problem always thoroughly do not solved.This occurrence characteristics of vanadium titano-magnetite mineral determines the effective separation adopting physical upgrading method cannot realize titanium, iron from the source of ore, 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%) form vitreum, TiO 2lose activity 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 the value that titanium and iron utilizes separately.
China is first country comprehensively extracting iron, vanadium, titanium with commercial scale from complicated vanadium titano-magnetite in the world, but due to general physical method fundamentally can not change iron, the tax of the fine and close symbiosis of titanium deposits characteristic, therefore, adopt the physical upgrading methods such as common gravity separation method, magnetic method, floatation to carry out titanium, iron is separated, efficiency is low, is difficult to select of high grade and the ilmenite concentrate that impurity is few or iron ore concentrate; Meanwhile, TiO 2organic efficiency is not high, v-ti magnetite green ore after Mineral separation, the TiO of about 54% 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 S, Si, the Al in iron ore concentrate 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 ", is the magnetic separation after ore grinding, alkaline pretreatment, filtration, again ore grinding of v-ti magnetite green ore is obtained the method for ilmenite concentrate and iron ore concentrate.The method is by iron content 32.16% with containing TiO 2the v-ti magnetite green ore of 12.11%, by magnetic separation process after ore grinding, alkaline pretreatment, filtration, again ore grinding, defines iron content 59.30% iron ore concentrate and contains TiO 2the ilmenite concentrate of 20.15%.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 of alkali leaching preferentially will occur in SiO 2, Al 2o 3with it mineral, define the alkali leaching rear compound similar to titanium in the dipped journey of alkali, the NaOH alkali number of alkali leaching ferrotianium raw ore consumption is 469Kg/t raw ore, and cost is high; And the titanium compound formed after the leaching of ferrotianium raw ore alkali, the compound of the silicon formed after soaking with the gangue mineral alkali such as quartz, it is very difficult for wanting to realize effectively being separated in follow-up magnetic separation, and this also constrains the raising of the rear iron concentrate grade of ferrotianium raw ore alkali leaching and ilmenite concentrate grade.Meanwhile, the method adopts twice grinding process to change mineral surfaces physicochemical properties, adds 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, more high-grade iron ore concentrate and ilmenite concentrate cannot be obtained.
CN201410164255.1 discloses one and " utilizes alkali leaching, classification and reverse flotation to select the method for v-ti magnetite concentrate again ", v-ti magnetite concentrate is placed in aqueous slkali by this invention, feed cyclone after alkali leaching cheese being become ore pulp after alkali leaching reaction and carry out classification, again the sand setting after classification is added water and be mixed with ore pulp, feed reverse flotation work, obtain iron ore concentrate, TiO that TFe content is 65% ~ 69.5% respectively 2content is the ilmenite concentrate of 55% ~ 70%.The method achieve and efficiently sort v-ti magnetite concentrate, but adopt alkali leaching due to simple in reaction, react 0.5 ~ 5 hour at 280 ~ 370 DEG C of temperature, chemical reaction temperature is higher, and the time is longer, and SiO after reaction 2and TiO 2content is up to 3%, and impurity content is higher, causes the capacity factor of a blast furnace to reduce, adds ironmaking cost; The alkali number consumed in this inventive method is up to 100kg/t concentrate, and alkaline consumption is higher, and alkali leaching product sodium titanate or the productive rate of potassium titanate are less than 80kg/T raw ore, sodium titanate or the lower titanium resource utilization rate that causes of potassium titanate productive rate not high.
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 that physics and chemistry beneficiation method effectively combines, there is provided a kind of cost low, reclaim quality and efficiency is high, technique is simple, and utilize alkali oxide leaching, classification and the reverse flotation of good operability select the method for v-ti magnetite concentrate again, achieve and titanium, iron in v-ti magnetite concentrate are efficiently separated, improve into stokehold Iron grade, 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, reduce ironmaking cost, improve TiO simultaneously 2comprehensive resource utilization rate, reduces environmental pollution.
In order to realize object of the present invention, technical scheme of the present invention is achieved in that
A kind of method utilizing alkali oxide leaching, classification and reverse flotation to select v-ti magnetite concentrate more of the present invention, is characterized in that comprising the steps:
1) alkali oxide leaching
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 the aqueous slkali that mass concentration is 5% ~ 52%, add oxidant, then at the temperature of 220 DEG C ~ 330 DEG C, alkali soaks reaction 0.5 ~ 2 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 20% ~ 25% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.0 ~ 5.3, one smart pH value controls 4.6 ~ 5.2, and once purging selection, secondary scan equal control ph 4.5 ~ 4.6, and concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 25% ~ 30%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Slightly floating smart C is fed selected operation, carries out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E to be TFe content range be 65% ~ 70% final iron ore concentrate;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge as TiO 2content range is the final ilmenite concentrate of 55% ~ 70%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
Described aqueous slkali is any one in the NaOH aqueous solution, the KOH aqueous solution or NaOH and KOH mixed aqueous solution.
Described oxidant is O 2or H 2o 2, described O 2addition is 20 ~ 120psi, H 2o 2addition is 50 ~ 200kg/t to ore deposit.
Advantage of the present invention is:
The process of alkali oxide leaching has carried out chemical reaction to elements such as Ti, S, Si, Al in v-ti magnetite concentrate, defines corresponding salt, makes the iron in v-ti magnetite concentrate change the form of iron oxide into.With v-ti magnetite concentrate unlike, SiO in ilmenite raw ore 2and Al 2o 3content far away higher than SiO in v-ti magnetite concentrate 2and Al 2o 3content, wherein SiO in ilmenite raw ore 2>20%, Al 2o 3>7%, SiO in v-ti magnetite concentrate 2<6%, Al 2o 3<6%.In alkali leaching ilmenite raw ore process, because the process of alkali leaching preferentially will occur in SiO 2, Al 2o 3deng on mineral, alkali is made to soak v-ti magnetite concentrate more less than alkali leaching ilmenite raw ore alkali consumption, simultaneously O 2introducing make containing S compound oxidation, oxidized FeTiO 3, accelerate reaction, reduce reaction temperature, shorten the reaction time, better effects if, greatly reduce energy consumption and equipment investment.Such as, when soaking with NaOH alkali oxide, the alkali number that the present invention consumes is less than 90kg/t concentrate, reduces more than 5.2 times, than not passing into O than the alkali number 469kg/t raw ore of alkali leaching raw ore consumption 2alkali leaching consume alkali number reduce 10kg/t concentrate; Meanwhile, O 2introducing alkali is soaked reaction temperature is minimum is down to 220 DEG C, the reaction time is less than 2 hours.
In addition, in the method, the product of alkali oxide leaching is sodium titanate or potassium titanate, the productive rate of sodium titanate or potassium titanate is greater than 100kg/T raw ore, sodium titanate or potassium titanate are present in end product ilmenite concentrate, a large amount of whisker is had, as shown in Figures 2 and 3 by the microstructure of scanning electron microscopic observation ilmenite concentrate is known.The whisker of potassium titanate and sodium titanate has excellent character and applies widely, and main practical feature and performance are: have excellent micro-enhancing and filling capacity; The wear-resisting of excellence undermines Frictional Slipping performance; Excellent surface smoothness and high dimensional accuracy and stability; Processability is good, to process equipment and die wear little; Market price 6.5 ~ 150,000/the ton of potassium titanate crystal whisker.Potassium titanate and sodium titanate are also widely used in flux-cored wire, stainless steel electrode, low-hydrogen electrode, AC/DC welding rod.As welding rod additive, the market price 1.8 ten thousand/ton of sodium titanate, the method effectively improves TiO 2comprehensive resource utilization rate.
Cyclone presses granularity and the gravity grading of mineral, and the titanium compound generated after alkali oxide leaching is than the fine size of iron mineral, and proportion is little, and the difference of specific gravity of titanium, iron is comparatively large, achieves effective separation of titanium, iron.
Add reverse flotation, make iron concentrate grade bring up to 65% ~ 70% by 50% ~ 55%, in isolated iron ore concentrate, S content significantly reduces simultaneously, is down to is less than 0.10%, SiO by more than 0.50% 2content is down to less than 1%, Al by 3% ~ 6% 2o 3content is down to less than 1.8%, TiO by 3% ~ 6% 2content is down to less than 6% by more than 12%, meanwhile, can also obtain TiO 2content range is the ilmenite concentrate of 55% ~ 70%.
Integrated use alkali oxide of the present invention leaching, classification and reverse flotation select v-ti magnetite concentrate again, achieve titanium in v-ti magnetite concentrate, iron is efficiently separated, decrease the TiO entering blast furnace 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, reduce ironmaking cost, for subsequent smelting creates better condition, improve the comprehensive utilization ratio of titanium resource simultaneously.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Fig. 2 is the microstructure photograph (X10000) of the scanning electron microscopic observation ilmenite concentrate of ilmenite concentrate.
Fig. 3 is the microstructure photograph (X5000) of the scanning electron microscopic observation ilmenite concentrate of ilmenite concentrate.
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 oxide leaching
Be 53.6%, TiO by TFe content 2content is 11.9%, SiO 2content is 5.12%, Al 2o 3content is 4.94%, the v-ti magnetite concentrate of S content 0.83%, is placed in the NaOH aqueous slkali that mass concentration is 23%, passes into the O of 32psi 2, then at the temperature of 320 DEG C, alkali soaks reaction 1.0 hours, and filtered by reactant, obtain filtrate and alkali leaching cake A, NaOH consumption 81.4kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
4mFeTiO 3+8NaOH +mO 2 2mFe 2O 3↓+4Na 2O·(TiO 2) m↓+4H 2O m≥1
pFe 3O 4·q（FeO·TiO 2) +2rNaOH pFe 3O 4↓+qFeO↓+ (Na 2O) r·(TiO 2) q↓+rH 2O
Al 2O 3+2NaOH 2NaAlO 2+ H 2O
tSiO 2+2NaOH Na 2O·(SiO 2) t↓+ H 2O
3FeS 2+6NaOH 3FeS↓+Na 2SO 3+2Na 2S+3H 2O
4FeS 2+ 11O 2 2Fe 2O 3 + 8SO 2
4FeO+O 2 2Fe 2O 3
2SO 2+O 2+4NaOH 2Na 2SO 4+ 2H 2O
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 21% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.1, one smart pH value controls 5.0, and sweep, two sweep equal control ph 4.5, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 26%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 65.3%, wherein SiO 2content is 0.36%, Al 2o 3content is 1.15%, S content is 0.01%; Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 67.3%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is sodium titanate, and the productive rate of sodium titanate is greater than 100kg/T raw ore, and sodium titanate is present in end product ilmenite concentrate, has a large amount of whisker, as shown in Figure 2 by the microstructure of scanning electron microscopic observation ilmenite concentrate is known.
Embodiment 2:
1) alkali oxide leaching
Be 51.3%, TiO by TFe content 2content is 13.8%, SiO 2content is 4.87%, Al 2o 3content is 5.05%, the v-ti magnetite concentrate of S content 0.74%, is placed in the NaOH aqueous slkali that mass concentration is 14%, passes into the O of 98psi 2, then at the temperature of 250 DEG C, alkali soaks reaction 75 minutes, and filtered by reactant, obtain filtrate and alkali leaching cake A, NaOH consumption 78.5kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1;
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 20% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.1, one smart pH value controls 4.5, and sweep, two sweep equal control ph 4.6, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 28%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 66.9%, wherein SiO 2content is 0.66%, Al 2o 3content is 1.51%, S content is 0.02%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 55.4%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is sodium titanate, and the micro-structural feature of ilmenite concentrate as shown in Figure 2.
Embodiment 3:
1) alkali oxide leaching
Be 52.4%, TiO by TFe content 2content is 12.5%, SiO 2content is 4.65%, Al 2o 3content is 4.61%, the v-ti magnetite concentrate of S content 0.74%, is placed in the NaOH aqueous slkali that mass concentration is 43%, adds 91kg/t to ore deposith 2o 2, then at the temperature of 235 DEG C, alkali soaks reaction 1.5 hours, and filtered by reactant, obtain filtrate and alkali leaching cake A, NaOH consumption 87.6kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2mFeTiO 3+4NaOH+mH 2O 2 mFe 2O 3↓+2Na 2O·(TiO 2) m↓+(m+2)H 2O m≥1
pFe 3O 4·q（FeO·TiO 2) +2rNaOH pFe 3O 4↓+qFeO↓+ (Na 2O) r·(TiO 2) q↓+rH 2O
Al 2O 3+2NaOH 2NaAlO 2+ H 2O
tSiO 2+2NaOH Na 2O·(SiO 2) t↓+ H 2O
3FeS 2+6NaOH 3FeS↓+Na 2SO 3+2Na 2S+3H 2O
2FeS 2+ 11H 2O 2 Fe 2O 3 +4SO 2+ 11H 2O
2FeO+H 2O 2 Fe 2O 3+ H 2O
SO 2+H 2O 2+2NaOH Na 2SO 4+ 2H 2O
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 23% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.2, one smart pH value controls 5.1, and sweep, two sweep equal control ph 4.5, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 25%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 69.6%, wherein SiO 2content is 0.29%, Al 2o 3content is 0.97%, S content is 0.01%; Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 56.2%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is sodium titanate, and the micro-structural feature of ilmenite concentrate as shown in Figure 2.
Embodiment 4:
1) alkali oxide leaching
Be 50.2%, TiO by TFe content 2content is 14.9%, SiO 2content is 4.84%, Al 2o 3content is 4.97%, the v-ti magnetite concentrate of S content 0.85%, is placed in the NaOH aqueous slkali that mass concentration is 51%, passes into the O of 115psi 2, then at the temperature of 330 DEG C, alkali soaks reaction 0.5 hour, and filtered by reactant, obtain filtrate and alkali leaching cake A, NaOH consumption 82.7kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1;
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 25% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.2, one smart pH value controls 5.1, and sweep, two sweep equal control ph 4.6, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 27.0%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 67.5%, wherein SiO 2content is 0.39%, Al 2o 3content is 1.31%, S content is 0.01%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 60.9%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is sodium titanate, and the micro-structural feature of ilmenite concentrate as shown in Figure 2.
Embodiment 5:
1) alkali oxide leaching
Be 51.9%, TiO by TFe content 2content is 12.9%, SiO 2content is 3.93%, Al 2o 3content is 4.67%, the v-ti magnetite concentrate of S content 0.75%, is placed in the KOH aqueous slkali that mass concentration is 34%, passes into the O of 95psi 2, then at the temperature of 220 DEG C, alkali soaks reaction 1.0 hours, and filtered by reactant, obtain filtrate and alkali leaching cake A, KOH consumption 85.1 kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
4mFeTiO 3+8KOH+mO 2 2mFe 2O 3↓+4K 2O·(TiO 2) m↓+4H 2O m≥1
pFe 3O 4·q（FeO·TiO 2) +2rKOH pFe 3O 4↓+qFeO↓+ (K 2O) r·(TiO 2) q↓+rH 2O
Al 2O 3+2KOH 2KAlO 2+ H 2O
tSiO 2+2KOH K 2O·（SiO 2） t↓+ H 2O
3FeS 2+6KOH 3FeS↓+K 2SO 3+2K 2S+3H 2O
4FeS 2+ 11O 2 2Fe 2O 3 + 8SO 2
4FeO+O 2 2Fe 2O 3
2SO 2+O 2+4KOH 2K 2SO 4+ 2H 2O
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 22% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is that supplementary catching agent carries out thick, an essence, two reverse flotation works swept, in reverse flotation work, one thick pH value controls 5.3, one smart pH value controls 4.9, and sweep, two sweep equal control ph 4.6, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 30.0%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 68.8%, wherein SiO 2content is 0.39%, Al 2o 3content is 1.48%, S content is 0.01%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 69.2%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is potassium titanate, and the productive rate of potassium titanate is greater than 100kg/T raw ore, and potassium titanate is present in end product ilmenite concentrate, has a large amount of whisker, as shown in Figure 3 by the microstructure of scanning electron microscopic observation ilmenite concentrate is known.
Embodiment 6:
1) alkali oxide leaching
Be 54.7%, TiO by TFe content 2content is 10.4%, SiO 2content is 3.62%, Al 2o 3content is 4.66%, the v-ti magnetite concentrate of S content 0.63%, is placed in the KOH aqueous slkali that mass concentration is 39%, adds 196kg/t to ore deposith 2o 2, then at the temperature of 305 DEG C, alkali soaks reaction 45 minutes, and filtered by reactant, obtain filtrate and alkali leaching cake A, KOH consumption 79.9kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2mFeTiO 3+4KOH+mH 2O 2 mFe 2O 3↓+2K 2O·(TiO 2) m↓+(m+2)H 2O m≥1
pFe 3O 4·q（FeO·TiO 2) +2rKOH pFe 3O 4↓+qFeO↓+ (K 2O) r·(TiO 2) q↓+rH 2O
Al 2O 3+2KOH 2KAlO 2+ H 2O
tSiO 2+2KOH K 2O·(SiO 2) t↓+ H 2O
3FeS 2+6KOH 3FeS↓+K 2SO 3+2K 2S+3H 2O
2FeS 2+ 11H 2O 2 Fe 2O 3 +4SO 2+ 11H 2O
2FeO+H 2O 2 Fe 2O 3+ H 2O
SO 2+H 2O 2+2KOH K 2SO 4+ 2H 2O
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 24% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is that supplementary catching agent carries out thick, an essence, two reverse flotation works swept, in reverse flotation work, one thick pH value controls 5.1, one smart pH value controls 5.0, and sweep, two sweep equal control ph 4.5, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 29%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 69.2%, wherein SiO 2content is 0.41%, Al 2o 3content is 1.21%, S content is 0.01%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into TiO 2the final ilmenite concentrate of content 64.1%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is potassium titanate, and the micro-structural feature of ilmenite concentrate as shown in Figure 3.
Embodiment 7:
1) alkali oxide leaching
Be 53.0%, TiO by TFe content 2content is 12.2%, SiO 2content is 4.17%, Al 2o 3content is 4.63%, the v-ti magnetite concentrate of S content 0.79%, is placed in that NaOH mass concentration is 22%, KOH mass concentration is the mixed aqueous solution of 7%, passes into the O of 85psi 2, then at the temperature of 275 DEG C, alkali soaks reaction 2.0 hours, is filtered by reactant, filtrate and alkali leaching cake A, NaOH consumption 33kg/t to ore deposit, KOH consumption 50.4 kg/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
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 24% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is that supplementary catching agent carries out thick, an essence, two reverse flotation works swept, in reverse flotation work, one thick pH value controls 5.1, one smart pH value controls 5.0, and sweep, two sweep equal control ph 4.5, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 30%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 67.9%, wherein SiO 2content is 0.36%, Al 2o 3content is 1.25%, S content is 0.01%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 62.4%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is potassium titanate and sodium titanate, and the gross production rate of potassium titanate and sodium titanate is greater than 100kg/T raw ore, and potassium titanate and sodium titanate are present in end product ilmenite concentrate.
Embodiment 8:
1) alkali oxide leaching
Be 52.8%, TiO by TFe content 2content is 12.5%, SiO 2content is 4.47%, Al 2o 3content is 5.13%, the v-ti magnetite concentrate of S content 0.81%, is placed in that NaOH mass concentration is 20%, KOH mass concentration is the mixed aqueous solution of 6%, adds 52kg/t to ore deposith 2o 2, then at the temperature of 270 DEG C, alkali soaks reaction 1.5 hours, is filtered by reactant, filtrate and alkali leaching cake A, NaOH consumption 30kg/t to ore deposit, KOH consumption 48.4 kg/t is to ore deposit, described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 3 and embodiment 6;
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 24% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is that supplementary catching agent carries out thick, an essence, two reverse flotation works swept, in reverse flotation work, one thick pH value controls 5.1, one smart pH value controls 5.0, and sweep, two sweep equal control ph 4.5, concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 29%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Feed selected operation by slightly floating smart C, carry out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E is the iron ore concentrate of TFe content 66.8%, wherein SiO 2content is 0.36%, Al 2o 3content is 1.05%, S content is 0.01%;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge into containing TiO 2the final ilmenite concentrate of content 67.5%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
In the method, the product of alkali oxide leaching is the mixture of potassium titanate and sodium titanate, and the gross production rate of potassium titanate and sodium titanate is greater than 100kg/T raw ore, and potassium titanate and sodium titanate are present in end product ilmenite concentrate.

Claims (3)

1. utilize alkali oxide leaching, classification and reverse flotation to select a method for v-ti magnetite concentrate again, it is characterized in that comprising the steps:
1) alkali oxide leaching
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 the aqueous slkali that mass concentration is 5% ~ 52%, add oxidant, then at the temperature of 220 DEG C ~ 330 DEG C, alkali soaks reaction 0.5 ~ 2 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
Added water by alkali leaching cake A in step 1), the ore pulp forming mass concentration 20% ~ 25% feeds cyclone and carries out classification, and classification goes out sand setting B and overflow Y;
3) reverse flotation
With H 2sO 4for activator and the pH value adjusting agent of titanium compound, fatty acid is collecting agent, diesel oil is the reverse flotation work that supplementary catching agent carries out thick, an essence, secondary and scans, in reverse flotation work, one thick pH value controls 5.0 ~ 5.3, one smart pH value controls 4.6 ~ 5.2, and once purging selection, secondary scan equal control ph 4.5 ~ 4.6, and concrete steps are as follows:
By step 2) in sand setting B add water and be mixed with the ore pulp of mass concentration 25% ~ 30%, feed reverse flotation and roughly select operation, obtain slightly floating smart C and thick floating tail D;
Slightly floating smart C is fed selected operation, carries out primary cleaning and obtain selected concentrate E and cleaner tailings F, described selected concentrate E to be TFe content range be 65% ~ 70% final iron ore concentrate;
Slightly floating tail D is fed and scans operation, after twice is scanned one to wind up G1 and sweep smart H1; Two sweep smart H2 and two winds up G2, and described two G2 and overflow Y that wind up merge as TiO 2content range is the final ilmenite concentrate of 55% ~ 70%;
The chats product cleaner tailings F of each operation, sweep smart H1, two and sweep smart H2 order and return last operation.
2. according to claim 1ly utilize the method that alkali oxide soaks, classification and reverse flotation select v-ti magnetite concentrate again, it is characterized in that described aqueous slkali is any one in the NaOH aqueous solution, the KOH aqueous solution or NaOH and KOH mixed aqueous solution.
3. the method utilizing alkali oxide leaching, classification and reverse flotation to select v-ti magnetite concentrate more according to claim 1, is characterized in that described oxidant is O 2or H 2o 2, described O 2addition is 20 ~ 120psi, H 2o 2addition is 50 ~ 200kg/t to ore deposit.
CN201510320559.7A 2015-06-12 2015-06-12 Method for reselecting vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, classification and reverse flotation Pending CN104959217A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
RU2394926C1 (en) * 2009-03-04 2010-07-20 Учреждение Российской академии наук Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра РАН (ИХТРЭМС КНЦ РАН) Procedure for processing titanium-magnetite concentrate
CN102154531A (en) * 2011-03-25 2011-08-17 喀左县钒钛资源综合开发利用工程技术研究中心 Method for producing artificial rutile from titanium-containing blast furnace slags
CN102181626A (en) * 2011-04-08 2011-09-14 北京矿冶研究总院 Beneficiation method of ilmenite
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
CN103962221A (en) * 2014-04-23 2014-08-06 鞍钢集团矿业公司 Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, classification and reverse flotation
CN104498715A (en) * 2014-11-27 2015-04-08 山东国大黄金股份有限公司 Method for extracting gold and silver from acid making high-iron cinder and removing impurities

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
RU2394926C1 (en) * 2009-03-04 2010-07-20 Учреждение Российской академии наук Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра РАН (ИХТРЭМС КНЦ РАН) Procedure for processing titanium-magnetite concentrate
CN102154531A (en) * 2011-03-25 2011-08-17 喀左县钒钛资源综合开发利用工程技术研究中心 Method for producing artificial rutile from titanium-containing blast furnace slags
CN102181626A (en) * 2011-04-08 2011-09-14 北京矿冶研究总院 Beneficiation method of ilmenite
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
CN103962221A (en) * 2014-04-23 2014-08-06 鞍钢集团矿业公司 Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, classification and reverse flotation
CN104498715A (en) * 2014-11-27 2015-04-08 山东国大黄金股份有限公司 Method for extracting gold and silver from acid making high-iron cinder and removing impurities

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