CN103962224A - Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, acid pickling and combined magnetic-gravity separation - Google Patents
Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, acid pickling and combined magnetic-gravity separation Download PDFInfo
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Abstract
The invention discloses a vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, acid pickling and combined magnetic-gravity separation. The method comprises the steps of placing vanadium-titanium magnetite concentrate in aqueous alkali with a mass concentration of 5%-52% for alkaline leaching reaction at a temperature between 280 DEG C and 370 DEG C for 0.5 h - 5 h and conducting filtering to obtain a filtrate and an alkaline leached filter cake A; adding water into A to obtain pulp with the mass ratio of solid to liquid of 1:1-10, placing the pulp into an H2SO4 solution with a mass concentration of 1%-10%, conducting acid pickling for 5 min - 60 min at a temperature between 50 DEG C and 90 DEG C, and conducting filtering to obtain a filtrate and an acid leached filter cake B; adding water into B to obtain pulp with a mass concentration of 30%-41%, and conducting combined magnetic-gravity recleaning to obtain iron ore concentrate with the TFe content ranging from 65% to 69% and titanium concentrate with the TiO2 content ranging from 70% to 82%. The method has the advantages that efficient sorting of the vanadium-titanium magnetite concentrate is realized, alkali consumption is low, the content of impurities such as Al and Si entering a blast furnace is reduced, the content of detrimental impurities TiO2 and S is reduced especially, the utilization coefficient of the blast furnace is increased, blast furnace slag emission is reduced, iron-making cost is reduced, the problems of high S content and severe pollution in the smelting process are solved, and the comprehensive utilization rate of titanium resources is increased.
Description
Technical field
The present invention relates to a kind of ore-dressing technique of v-ti magnetite concentrate, relate in particular to and a kind ofly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate.
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.
CN201310183580.8 discloses " a kind of wet-treating sefstromite concentrate is prepared the method for titanium liquid ", has proposed the method with salt pickling separating titanium iron.This invention is the method that wet-treating v-ti magnetite concentrate is prepared titanium liquid, comprise that v-ti magnetite concentrate hydrochloric acid leaching, molten salt react ion, pickling again, sulfuric acid solution, filtration etc. obtain the processes such as titanium liquid, the method is mainly for extracting ilmenite concentrate, its complex technical process, in hydrochloric acid leaching process, need to react and dissolve in filtrate with iron and vanadium with hydrochloric acid, consume a large amount of hydrochloric acid, cost is high; Meanwhile, in fused salt process, use NaOH and titanium and pasc reaction to consume alkali.In addition, owing to having used hydrochloric acid in the method leaching process, in hydrochloric acid, chlorion is large to equipment corrosion, is difficult for suitability for industrialized production.The method is mainly applicable to the recycling of titanium in the low poor v-ti magnetite concentrate of high vanadium low iron content.
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, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, 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
Of the present inventionly a kind ofly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it 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) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that solid-liquid mass ratio is 1:1～10, then to be placed in mass concentration be 1%～10% H
2sO
4in solution, under 50～90 DEG C of conditions, pickling 5～60 minutes, filters pickling reactant, obtains filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system;
3) magnetic reconnection closes ore dressing
By step 2) in the acidleach filter cake B ore pulp of making mass concentration 30%～34% that adds water carry out magnetic separation, respectively magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 36%～41% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content range is 65%～69% final iron ore concentrate, gravity concentrate E is TiO
2content range is 70%～82% final ilmenite concentrate, and gravity tailings F is SiO
257～62% true tailings that content is.
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 0.12T～0.15T 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 0.12T～0.15T and 0.03T～0.05T magnetic dewater cone to carry out two stages of magnetic separation.
Described gravity treatment adopts
the spiral chute of rice carries out gravity treatment.
Advantage of the present invention is:
The method that method synthesis of the present invention uses that alkali soaks, pickling, magnetic reconnection are closed is processed v-ti magnetite concentrate, 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.
Acid cleaning process has dissolved oxysalt and the sulfide such as Ti, Si, Al after alkali soaks effectively, makes it to dissociate with iron ore concentrate.Because adopting sulfuric acid, the present invention carries out pickling in addition, reaction condition gentleness, and little to equipment corrosion, cost is low, is more conducive to suitability for industrialized production.
Add magnetic reconnection and close ore dressing, make iron concentrate grade bring up to 65%～69% 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 70%～82% 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 process chart that the present invention adopts two stages of magnetic separation.
Fig. 3 is the process chart that the present invention adopts another embodiment of two magnetic separation.
Fig. 4 is the process chart that the present invention adopts another embodiment of two magnetic separation.
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 51.8%, TiO by TFe content
2content is 13.5%, SiO
2content is 4.65%, Al
2o
3content is 4.91%, the v-ti magnetite concentrate of S content 0.76%, be placed in mass concentration and be 30% NaOH aqueous slkali, at the temperature of 360 DEG C, alkali soaks reaction 1 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 79.5kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:9, then to be placed in mass concentration be 8% H
2sO
4in solution, 80 DEG C of pickling 5 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is:
Na
2o (TiO
2)
x+ H
+ heating(H
2o) (TiO
2)
x↓+Na
+
Na
2o (SiO
2)
t+ H
+ heating(H
2o) (SiO
2)
t↓+Na
+
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water that to feed field intensity be that the drum magnetic separator of 0.12T carries out magnetic separation, magnetic concentrate C and magnetic tailing D respectively for the ore pulp of making mass concentration 30%;
The ore pulp of making mass concentration 36% that again magnetic tailing D added water feeds
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F, and described magnetic concentrate C is that TFe content is 65.1% final iron ore concentrate (SiO
2content is 0.48%, Al
2o
3content is 1.95%, S content is 0.02%), described gravity concentrate E is TiO
2content is 70.8% final ilmenite concentrate, and gravity tailings F is SiO
2content is 59.2% true tailings.
Embodiment 2:
1) alkali soaks
Be 54.0%, TiO by TFe content
2content is 10.2%, SiO
2content is 3.05%, Al
2o
3content is 4.11%, the v-ti magnetite concentrate of S content 0.53%, be placed in mass concentration and be 40% NaOH aqueous slkali, at the temperature of 330 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) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:6, then to be placed in mass concentration be 7% H
2sO
4in solution, 75 DEG C of pickling 45 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water that to feed field intensity be that the magnetic dewater cone of 0.03T carries out magnetic separation, magnetic concentrate C and magnetic tailing D respectively for the ore pulp of making mass concentration 31%;
The ore pulp of making mass concentration 37% that again magnetic tailing D added water feeds
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F, and described magnetic concentrate C is that TFe content is 65.8% final iron ore concentrate (SiO
2content is 0.44%, Al
2o
3content is 1.69%, S content is 0.02%), described gravity concentrate E is TiO
2content is 72.8% final ilmenite concentrate, and gravity tailings F is SiO
2content is 59.7% true tailings.
Embodiment 3:
As shown in Figure 2.
1) alkali soaks
Be 50.1%, TiO by TFe content
2content is 14.5%, SiO
2content is 3.95%, Al
2o
3content is 5.41%, the v-ti magnetite concentrate of S content 0.71%, be placed in mass concentration and be 50% NaOH aqueous slkali, at the temperature of 320 DEG C, alkali soaks reaction 2.5 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 with embodiment 1.
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:7, then to be placed in mass concentration be 6% H
2sO
4in solution, 60 DEG C of pickling 40 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water that to feed field intensity be that the magnetic dewater cone of 0.03T carries out a stages of magnetic separation for the ore pulp of making mass concentration 30%, obtain respectively magnetic essence C1 and a magnetic tail D1; Adopt the drum magnetic separator that field intensity is 0.13T to carry out two stages of magnetic separation the ore pulp of one magnetic essence C1 mass concentration 32%, obtain respectively two magnetic essence C2 and two magnetic tail D2;
Again the ore pulp of two magnetic tail D2 mass concentrations 35% is fed
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F, and two described magnetic essence C2 are that TFe content is 68.5% final iron ore concentrate (SiO
2content is 0.23%, Al
2o
3content is 1.15%, S content is 0.01%), gravity concentrate E is TiO
2content is 78.2% final ilmenite concentrate, and described a magnetic tail D1 and gravity tailings F merge into true tailings.
Embodiment 4:
As shown in Figure 3.
1) alkali soaks
Be 51.5%, TiO by TFe content
2content is 13.6%, SiO
2content is 3.15%, Al
2o
3content is 4.91%, the v-ti magnetite concentrate of S content 0.59%, be placed in mass concentration and be 21% NaOH aqueous slkali, at the temperature of 330 DEG C, alkali soaks reaction 2.0 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 85kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:5, then to be placed in mass concentration be 5% H
2sO
4in solution, 65 DEG C of pickling 25 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water that to feed field intensity be that the magnetic dewater cone of 0.03T carries out a stages of magnetic separation for the ore pulp of making mass concentration 30%, obtain respectively magnetic essence C1 and a magnetic tail D1; Ore pulp to a magnetic essence C1 mass concentration 32% adopts the drum magnetic separator that field intensity is 0.13T to carry out two stages of magnetic separation, obtains respectively two magnetic essence C2 and two magnetic tail D2;
The ore pulp that again two magnetic tail D2 is mixed with to mass concentration 35% feeds
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F, and it is 66.8% final iron ore concentrate (SiO that described two magnetic essence C2 and gravity concentrate E merge into TFe content
2content is 0.23%, Al
2o
3content is 1.05%, S content is 0.01%), gravity tailings F is TiO
2content is 81.5% final ilmenite concentrate, and a described magnetic tail D1 is SiO
2content is 58.3% true tailings.
Embodiment 5:
As shown in Figure 4.
1) alkali soaks
Be 53.0%, TiO by TFe content
2content is 11.3%, SiO
2content is 3.25%, Al
2o
3content is 4.65%, the v-ti magnetite concentrate of S content 0.58%, be placed in mass concentration and be 10% KOH aqueous slkali, at the temperature of 280 DEG C, alkali soaks reaction 4.5 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, KOH consumption 94kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is:
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:3, then to be placed in mass concentration be 4% H
2sO
4in solution, 80 DEG C of pickling 20 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is:
K
2o (TiO
2)
x+ H
+ heating(H
2o) (TiO
2)
x↓+K
+
K
2o (SiO
2)
t+ H
+ heating(H
2o) (SiO
2)
t↓+K
+
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water and form the ore pulp of mass concentration 34% to feed field intensity be that the drum magnetic separator of 0.13T carries out a stages of magnetic separation, obtain a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; The magnetic dewater cone that a stages of magnetic separation concentrate C1 who is 31% by concentration is again 0.03T by field intensity carries out two stages of magnetic separation, obtains respectively two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailing D2;
After two stages of magnetic separation mine tailing D1, D2 being mixed, being mixed with mass concentration is that 40% mixing mine tailing feeds again
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F;
Two described stages of magnetic separation concentrate C2 are that TFe content is 67.5% final iron ore concentrate (SiO
2content is 0.45%, Al
2o
3content is 1.67%, S content is 0.01%), gravity concentrate E is TiO
2the final ilmenite concentrate of content 75.6%, gravity tailings F is SiO
2content is 60.6 % true tailings.
Embodiment 6:
As shown in Figure 4.
1) alkali soaks
Be 53.1%, TiO by TFe content
2content is 11.0%, SiO
2content is 3.95%, Al
2o
3content is 4.60%, the v-ti magnetite concentrate of S content 0.58%, be placed in mass concentration and be 8% KOH aqueous slkali, at the temperature of 290 DEG C, alkali soaks reaction 4.0 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, KOH consumption 95kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 5.
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:2, then to be placed in mass concentration be 2% H
2sO
4in solution, 90 DEG C of pickling 15 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 5.
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water and form the ore pulp of mass concentration 34% to feed field intensity be that the drum magnetic separator of 0.13T carries out a stages of magnetic separation, obtain a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; The magnetic dewater cone that a stages of magnetic separation concentrate C1 who is 30% by concentration is again 0.03T by field intensity carries out two stages of magnetic separation, obtains respectively two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailing D2;
After two stages of magnetic separation mine tailing D1, D2 being mixed, being mixed with mass concentration is that 40% mixing mine tailing feeds again
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F;
Two described stages of magnetic separation concentrate C2 are that TFe content is 68.2% final iron ore concentrate (SiO
2content is 0.35%, Al
2o
3content is 1.07%, S content is 0.01%), gravity concentrate E is TiO
2the final ilmenite concentrate of content 80.1%, gravity tailings FSiO
2content is 61.3% true tailings.
Embodiment 7:
As shown in Figure 4.
1) alkali soaks
Be 52.5%, TiO by TFe content
2content is 11.7%, SiO
2content is 3.89%, Al
2o
3content is 4.64%, the v-ti magnetite concentrate of S content 0.61%, the aqueous slkali that be placed in NaOH mass concentration and be 20%, KOH mass concentration is 10%, at the temperature of 310 DEG C, alkali soaks reaction 1.5 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 55kg/t is to ore deposit KOH consumption 30kg/t to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1 and embodiment 5.
2) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that quality solid-to-liquid ratio is 1:2, then to be placed in mass concentration be 2% H
2sO
4in solution, 75 DEG C of pickling 45 minutes, filter pickling reactant, obtain filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1 and embodiment 5.
3) magnetic reconnection closes ore dressing
By step 2) in acidleach filter cake B add water and form the ore pulp of mass concentration 34% to feed field intensity be that the drum magnetic separator of 0.13T carries out a stages of magnetic separation, obtain a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; The magnetic dewater cone that a stages of magnetic separation concentrate C1 who is 30% by concentration is again 0.03T by field intensity carries out two stages of magnetic separation, obtains respectively two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailing D2;
After two stages of magnetic separation mine tailing D1, D2 being mixed, being mixed with mass concentration is that 40% mixing mine tailing feeds again
the spiral chute of rice carries out gravity treatment, obtains respectively gravity concentrate E and gravity tailings F;
Two described stages of magnetic separation concentrate C2 are that TFe content is 68.7% final iron ore concentrate (SiO
2content is 0.32%, Al
2o
3content is 1.01%, S content is 0.01%), gravity concentrate E is TiO
2the final ilmenite concentrate of content 80.6%, gravity tailings F is SiO
2content is 61.0% true tailings.
Claims (6)
1. utilize that alkali soaks, pickling and magnetic reconnection close a method of selecting again v-ti magnetite concentrate, it 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) pickling
By step 1) in alkali leaching cake A add water and make the ore pulp that solid-liquid mass ratio is 1:1～10, then to be placed in mass concentration be 1%～10% H
2sO
4in solution, under 50～90 DEG C of conditions, pickling 5～60 minutes, filters pickling reactant, obtains filtrate and acidleach filter cake B, and described filtrate feeds recovery and processing system;
3) magnetic reconnection closes ore dressing
By step 2) in the acidleach filter cake B ore pulp of making mass concentration 30%～34% that adds water carry out magnetic separation, respectively magnetic concentrate C and magnetic tailing D,
The ore pulp of making mass concentration 36%～41% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content range is 65%～69% final iron ore concentrate, gravity concentrate E is TiO
2content range is 70%～82% final ilmenite concentrate, and gravity tailings F is SiO
257～62% true tailings that content is.
2. according to claim 1ly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that described aqueous slkali is any one in NaOH or the KOH aqueous solution, NaOH and KOH mixed aqueous solution.
3. according to claim 1ly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that described magnetic separation adopts the drum magnetic separator of 0.12T～0.15T to carry out magnetic separation.
4. according to claim 1ly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that described magnetic separation adopts the magnetic dewater cone of 0.03T～0.05T to carry out magnetic separation.
5. according to claim 1ly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that described magnetic separation adopts respectively the drum magnetic separator of 0.12T～0.15T and 0.03T～0.05T magnetic dewater cone to carry out two stages of magnetic separation.
6. according to claim 1ly utilize that alkali soaks, pickling and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that described gravity treatment adopts
the spiral chute of rice carries out gravity treatment.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959215A (en) * | 2015-06-12 | 2015-10-07 | 鞍钢集团矿业公司 | Method for reselecting vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, acid washing and magnetic gravitational combination |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996024555A1 (en) * | 1995-02-10 | 1996-08-15 | Bhp Minerals International Inc. | PROCESSING ILMENITE ORE TO TiO2 PIGMENT |
| 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 |
| 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 |
| CN103691550A (en) * | 2013-12-18 | 2014-04-02 | 广西科晟达机械制造有限公司 | Beneficiation method of ilmenite |
-
2014
- 2014-04-23 CN CN201410164300.3A patent/CN103962224B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996024555A1 (en) * | 1995-02-10 | 1996-08-15 | Bhp Minerals International Inc. | PROCESSING ILMENITE ORE TO TiO2 PIGMENT |
| 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 |
| 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 |
| CN103691550A (en) * | 2013-12-18 | 2014-04-02 | 广西科晟达机械制造有限公司 | Beneficiation method of ilmenite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959215A (en) * | 2015-06-12 | 2015-10-07 | 鞍钢集团矿业公司 | Method for reselecting vanadium-titanium magnetite concentrate by using oxidization alkaline leaching, acid washing and magnetic gravitational combination |
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