CN103962219B - Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate - Google Patents
Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate Download PDFInfo
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Abstract
The present invention discloses and a kind ofly utilizes that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate. Comprise the steps: that it is 5～52% aqueous slkali that v-ti magnetite concentrate is placed in to mass concentration, at 280～370 DEG C, alkali soaks reaction 0.5～5 hour, filters, and obtains filtrate and alkali leaching cake A; A is added water and forms the ore pulp of mass concentration 20%～25% and feed cyclone and carry out classification, and classification goes out overflow and sand setting B; The ore pulp of making mass concentration 30%～41% that again sand setting B added water carries out magnetic separation and gravity treatment, obtains TFe content range and be 63%～68% iron ore concentrate and TiO2Content range is 50%～70% ilmenite concentrate. Advantage of the present invention is: realized v-ti magnetite concentrate is efficiently sorted, alkaline consumption is low, reduces and enters impurity content, especially the objectionable impurities TiO such as blast furnace Al and Si2, S content, improve the capacity factor of a blast furnace, reduce the discharge capacity of blast furnace slag, reduced ironmaking cost, solved smelting process S content high, with serious pollution problem; Improve titanium resource comprehensive utilization ratio simultaneously.
Description
Technical field
The present invention relates to a kind of ore-dressing technique of v-ti magnetite concentrate, relate in particular to that one utilizes that alkali soaks, classification and magneticHeavily the method for v-ti magnetite concentrate is selected in associating again.
Background technology
Vanadium titano-magnetite is a kind of grandidierite of multiple metallic element, is the magnetic taking iron content, vanadium, titanium as main symbiosisIron ore. And v-ti magnetite concentrate is one of product of vanadium titano-magnetite process ore dressing acquisition, wherein vanadium is same with class matterResemble tax and be stored in titanomagnetite, displacement high price iron ion. Titanomagnetite is oikocryst mineral (Fe3Ｏ4) and chadacryst ore deposit [titaniumIron spar 2FeOTiO2, ilmenite FeOTiO2, aluminum-spinel (Mg, Fe) (Al, Fe)2Ｏ4] formComplex. For example, Chinese Panzhihua Region Midi Concentrator v-ti magnetite green ore and select the v-ti magnetite after ironConcentrate chemistry multielement analysis the results are shown in Table 1, v-ti magnetite green ore and vanadium titano-magnetite concentrate material phase analysis knotFruit is 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 | Fe2O3 | TiO2 | V2O5 |
| 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 | SiO2 | Al2O3 | 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 98.3Hundred million tons. In v-ti magnetite ore, iron is mainly composed and is stored in titanomagnetite, the TiO in ore2Main tax is stored in grainIn shape ilmenite and titanomagnetite. Generally, approximately 57% titanium is composed and is stored in titanomagnetite (mFeTiO3·nFe3Ｏ4) in, approximately 40% titanium is composed and is stored in ilmenite (FeTiO3) 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. Vanadium titanium magneticThis occurrence characteristics of iron ore mineral has determined to adopt physical upgrading method to realize titanium, iron from the source of oreEffective separation, cause v-ti magnetite ore after physical upgrading, iron concentrate grade low (TFe < 55%), ironTitanium in concentrate enters blast furnace slag (TiO completely at ironmaking processes2Content reaches more than 22%) formation vitreum,TiＯ2Lost actively and cannot economic recovery, meanwhile, titanium recovery rate is low only has 18%. Therefore use the choosing of physicsOre deposit method sorts titanium iron ore and greatly reduces titanium and the iron value of utilization separately.
China be in the world first with commercial scale comprehensive iron, vanadium, titanium of extracting from complicated vanadium titano-magnetiteCountry, but characteristic is deposited in the tax that can not fundamentally change the fine and close symbiosis of iron, titanium due to general physical method, because ofThis, adopt the physical upgrading methods such as common gravity separation method, magnetic method, floatation to carry out titanium, iron separation, efficiencyLow, be difficult to select ilmenite concentrate of high grade and that impurity is few or iron ore concentrate; Meanwhile, TiO2Organic efficiency is not high, vanadiumTitanomagnetite raw ore after Mineral separation, approximately 54% TiO2Enter iron ore concentrate, these TiO2Through blast furnace smeltingAfter refining, almost all enter slag phase, form TiO2The blast furnace slag of content 20～24%; In addition, due in iron ore concentrateThe impurity content such as S, Si, Al also too high, above-mentioned reason not only causes that steelmaking furnace usage factor is low, energy consumptionGreatly, titanium resource waste, and amount of slag is large, environmental pollution is serious.
CN2011100879566 discloses " a kind of beneficiation method of ilmenite ", is by v-ti magnetite green ore warpOre grinding, alkali soak pretreatment, filtration, magnetic separation obtains the method for ilmenite concentrate and iron ore concentrate after ore grinding again. The method willIron content 32.16% and containing TiO212.11% v-ti magnetite green ore by ore grinding, alkali soak pretreatment, filtration,Magnetic separation processing after ore grinding again, has formed iron content 59.30% iron ore concentrate and has contained TiO220.15% ilmenite concentrate. Due toThe method is for ilmenite raw ore, raw ore SiO2、Al2O3, the gangue mineral content such as CaO, MgOHeight, the process that alkali soaks will preferentially occur in SiO2、Al2O3With it mineral, alkali soaks in process and has formed and titaniumSimilar alkali soaks 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 chemical combination of the silicon of rear formation with gangue mineral alkali such as quartzThing, it is very difficult wanting in follow-up magnetic separation, to realize effectively separation, this has also restricted ferrotianium raw ore alkali and has soakedThe raising of rear iron concentrate grade and ilmenite concentrate grade. Meanwhile, the method adopts twice grinding process to change mineral tableFace physicochemical properties, have increased complexity and the process cost of the method. In a word, by this kind of procedureComplexity, and in processing procedure, quantity of alkali consumption is large, cost is high; Meanwhile, cannot obtain more high-grade iron ore concentrateAnd 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 at physics and chemistryOn the basis of the effective combination of beneficiation method, provide a kind of cost low, reclaim quality and efficiency is high, technique is simple,And good operability utilize that alkali soaks, classification, magnetic reconnection close the method for selecting again v-ti magnetite concentrate, realized vanadiumIn titanium magnet ore concentrate, titanium, iron efficiently separate, and have improved and have entered stokehold iron grade, reduce and enter blast furnace TiO2、The content of the impurity such as S, Si, Al, improves the capacity factor of a blast furnace, reduces the discharge capacity of blast furnace slag, has reduced refiningIron cost improves TiO simultaneously2Comprehensive 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, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, its featureBe to comprise the steps:
1) alkali soaks
Be 50%～55%, TiO by TFe content range2Content range is 10%～15%, SiO2Content is3％～6％、Al2O3Content is 3%～6%, S content > 0.5% v-ti magnetite concentrate, be placed in mass concentrationBe in 5%～52% aqueous slkali, at the temperature of 280 DEG C～370 DEG C, alkali soaks reaction 0.5～5 hour, will be anti-Answer thing to filter, 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 cycloneCarry out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in the sand setting B ore pulp of making mass concentration 30%～34% that adds water carry out magnetic separation, respectivelyObtain 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 treatmentConcentrate E and gravity tailings F, described magnetic concentrate C is that TFe content range is 63%～68% final ironConcentrate, gravity concentrate E and overflow Y merge into TiO2Content range is 50%～70% final ilmenite concentrate,Gravity tailings F is true tailings.
Described aqueous slkali be in NaOH or the KOH aqueous solution, NaOH and KOH mixed aqueous solution arbitrarilyA kind of.
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 drum magnetic separator and the 0.03T～0.05T magnetic dewater cone of 0.12T～0.15TCarry out two stages of magnetic separation.
Described utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that instituteThe gravity treatment of stating adopts the spiral chute of 1.2 meters of ￠ 0.6～￠ to carry out gravity treatment.
Advantage of the present invention is:
Method synthesis of the present invention uses that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, realShowed 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%, SiO2Content is down to below 3% by 3%～6%, Al2O3Content by3%～6% is down to below 3%, 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, formsCorresponding salt. Different from v-ti magnetite concentrate, SiO in ilmenite raw ore2Content (> 20%) and Al2O3Content (> 7%) far away higher than SiO in v-ti magnetite concentrate2Content (< 6%) and Al2O3Content (< 6%),Soak in ilmenite raw ore process at alkali, the process of soaking due to alkali will preferentially occur in SiO2、Al2O3On mineral,Make alkali soak v-ti magnetite concentrate and soak ferrotianium raw ore alkali consumption still less than alkali, better effects if. For example, use NaOHWhen alkali soaks, the alkali number that the present invention consumes is less than 100kg/t concentrate, and the alkali number 469kg/t that soaks raw ore consumption than alkali is formerOre deposit 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,Proportion is little, the difference of specific gravity of titanium, iron is larger, has realized effective separation of titanium, iron.
Add magnetic reconnection and close ore dressing, make iron concentrate grade bring up to 63%～68% by 50%～55%, simultaneouslyIn iron ore concentrate, be less than 0.1%, SiO containing S amount2And Al2O3Content is all less than 3%, TiO2Content falls by 12%To below 6%; Meanwhile, can also obtain TiO2Content is 50%～70% ilmenite concentrate. Adopt the method,Realize titanium, iron have effectively been separated, reduced and enter blast furnace TiO2, 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 simultaneously and combineClose utilization rate.
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.
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 52.8%, TiO by TFe content2Content is 12.5%, SiO2Content is 4.75%, Al2O3ContentBe 4.90%, the v-ti magnetite concentrate of S content 0.78%, be placed in mass concentration and be 8% NaOH aqueous slkali,At the temperature of 300 DEG C, alkali soaks reaction 5 hours, and reactant is filtered, and obtains filtrate and alkali leaching cake A,NaOH consumption 81kg/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 divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be 0.13T cartridge type magnetic for the ore pulp of making mass concentration 30%Select machine to carry out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 36% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate EWith gravity tailings F, described magnetic concentrate C is that TFe content is 64.2% final iron ore concentrate (SiO2ContentBe 0.48%, Al2O3Content is 1.55%, S content is 0.02%), gravity concentrate E and overflow Y merge intoTiO2Content is 51.3% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 2:
As shown in Figure 1.
1) alkali soaks
Be 51.2%, TiO by TFe content2Content is 11.1%, SiO2Content is 4.75%, Al2O3ContentBe 4.82%, the v-ti magnetite concentrate of S content 0.81%, be placed in mass concentration and be 15% NaOH aqueous slkaliIn, at the temperature of 290 DEG C, alkali soaks reaction 4 hours, and reactant is filtered, and obtains filtrate and alkali leaching cakeA, NaOH consumption 81kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is sameEmbodiment 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 divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.05T magnetic force is de-for the ore pulp of making mass concentration 31%Tank carries out magnetic separation, obtains magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 38% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate EWith gravity tailings F, described magnetic concentrate C is that TFe content is 65.3% final iron ore concentrate (SiO2ContentBe 0.46%, Al2O3Content is 1.50%, S content is 0.01%), gravity concentrate E and overflow Y merge intoTiO2Content is 53.1% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 3:
As shown in Figure 1.
1) alkali soaks
Be 50.8%, TiO by TFe content2Content is 14.5%, SiO2Content is 4.65%, Al2O3ContentBe 4.72%, the v-ti magnetite concentrate of S content 0.66%, be placed in mass concentration and be 22% NaOH aqueous slkaliIn, at the temperature of 310 DEG C, alkali soaks reaction 3 hours, and reactant is filtered, and obtains filtrate and alkali leaching cakeA, NaOH consumption 80kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is sameEmbodiment 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 divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.03T magnetic force is de-for the ore pulp of making mass concentration 30%Tank carries out magnetic separation, obtains magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 39% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate EWith gravity tailings F, described magnetic concentrate C is that TFe content is 65.9% final iron ore concentrate (SiO2ContentBe 0.43%, Al2O3Content is 1.26%, S content is 0.01%), gravity concentrate E and overflow Y merge intoTiO2Content is 60.7% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 4:
As shown in Figure 1.
1) alkali soaks
Be 53.1%, TiO by TFe content2Content is 11.6%, SiO2Content is 4.65%, Al2O3ContentBe 4.81%, the v-ti magnetite concentrate of S content 0.74%, be placed in mass concentration and be 30% NaOH aqueous slkaliIn, at the temperature of 330 DEG C, alkali soaks reaction 2 hours, and reactant is filtered, and obtains filtrate and alkali leaching cakeA, NaOH consumption 79kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is sameEmbodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, form the ore pulp of mass concentration 23% and feed cyclone and divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.05T magnetic force is de-for the ore pulp of making mass concentration 32%Tank carries out magnetic separation, obtains magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 40% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate EWith gravity tailings F, described magnetic concentrate C is that TFe content is 66.5% final iron ore concentrate (SiO2ContentBe 0.46%, Al2O3Content is 1.28%, S content is 0.01%), gravity concentrate E and overflow Y merge intoTiO2Content is 62.7% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 5:
As shown in Figure 2.
1) alkali soaks
Be 52.2%, TiO by TFe content2Content is 12.7%, SiO2Content is 3.91%, Al2O3Content is4.61%, the v-ti magnetite concentrate of S content 0.70%, is placed in mass concentration and is 42% KOH aqueous slkali,At the temperature of 290 DEG C, alkali soaks reaction 1.5 hours, and reactant is filtered, and obtains filtrate and alkali leaching cake A,KOH consumption 79kg/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 24% and feed cyclone and divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.05T magnetic force is de-for the ore pulp of making mass concentration 33%Tank carries out magnetic separation, obtains magnetic concentrate C and magnetic tailing D;
The ore pulp of making mass concentration 40% that again magnetic tailing D added water carries out gravity treatment, respectively gravity concentrate EWith gravity tailings F, described magnetic concentrate C is that TFe content is 67.1% final iron ore concentrate (SiO2ContentBe 0.44%, Al2O3Content is 1.21%, S content is 0.01%), gravity concentrate E and overflow Y merge intoTiO2Content is 64.6% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 6:
As shown in Figure 2.
1) alkali soaks
Be 54.8%, TiO by TFe content2Content is 10.5%, SiO2Content is 3.45%, Al2O3Content is4.33%, the v-ti magnetite concentrate of S content 0.62%, is placed in mass concentration and is 51% KOH aqueous slkali,At the temperature of 300 DEG C, alkali soaks reaction 1.5 hours, and reactant is filtered, and obtains 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 implementingExample 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 divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.05T magnetic force is de-for the ore pulp of making mass concentration 30%Tank carries out magnetic separation, obtains a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; One stages of magnetic separation concentrate C1 is givenEntering field intensity is that 0.13T drum magnetic separator carries out two stages of magnetic separation, obtains two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailingsD2; Two stages of magnetic separation mine tailing D1 and D2 are merged to the ore pulp of making mass concentration 41% that adds water and carry out gravity treatment, respectivelyObtain gravity concentrate E and gravity tailings F, described magnetic concentrate C2 is that TFe content is 67.9% final ironConcentrate (SiO2Content is 0.38%, Al2O3Content is 1.24%, S content is 0.01%), gravity concentrate EY merges into TiO with overflow2Content is 68.6% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 7:
As shown in Figure 2.
1) alkali soaks
Be 54.5%, TiO by TFe content2Content is 10.9%, SiO2Content is 3.40%, Al2O3Content is4.35%, the v-ti magnetite concentrate of S content 0.65%, is placed in NaOH mass concentration and is 25%, KOH qualityConcentration is in 10% aqueous slkali, and at the temperature of 295 DEG C, alkali soaks reaction 1.5 hours, and reactant was carried outFilter, obtains filtrate and alkali leaching cake A, and NaOH consumption 40kg/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 divideLevel, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water that to feed field intensity be that 0.05T magnetic force is de-for the ore pulp of making mass concentration 30%Tank carries out magnetic separation, obtains a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; One stages of magnetic separation concentrate C1 is givenEntering field intensity is that 0.13T drum magnetic separator carries out two stages of magnetic separation, obtains two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailingsD2; Two stages of magnetic separation mine tailing D1 and D2 are merged to the ore pulp of making mass concentration 41% that adds water and carry out gravity treatment, respectivelyObtain gravity concentrate E and gravity tailings F, described magnetic concentrate C2 is that TFe content is 67.0% final ironConcentrate (SiO2Content is 0.38%, Al2O3Content is 1.24%, S content is 0.01%), gravity concentrate EY merges into TiO with overflow2Content is 68.0% final ilmenite concentrate, and gravity tailings F is true tailings.
Claims (5)
1. utilize that alkali soaks, classification and magnetic reconnection close a method of selecting again v-ti magnetite concentrate, it is characterized in that bagDraw together following steps:
1) alkali soaks
Be 50%～55%, TiO by TFe content range2Content range is 10%～15%, SiO2Content is3％～6％、Al2O3Content is 3%～6%, S content > 0.5% v-ti magnetite concentrate, be placed in mass concentrationBe that in 5%～52% aqueous slkali, described aqueous slkali is NaOH or the KOH aqueous solution, NaOH and KOHAny one in mixed aqueous solution, at the temperature of 280 DEG C～370 DEG C, alkali soaks reaction 0.5～5 hour, willReactant filters, and obtains filtrate and alkali leaching cake A, and 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 cycloneCarry out classification, classification goes out sand setting B and overflow Y;
3) magnetic reconnection closes ore dressing
By step 2) in the sand setting B ore pulp of making mass concentration 30%～34% that adds water carry out magnetic separation, respectivelyObtain 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, must weigh respectivelyConcentrate selection E and gravity tailings F, described magnetic concentrate C is that TFe content range is 63%～68%Whole iron ore concentrate, gravity concentrate E and overflow Y merge into TiO2Content range is 50%～70% final titanium essenceOre deposit, gravity tailings F is true tailings.
2. according to claim 1ly utilize that alkali soaks, classification and magnetic reconnection close and select v-ti magnetite concentrate againMethod, is characterized in that described magnetic separation adopts the drum magnetic separator of 0.12T～0.15T to carry out magnetic separation.
3. according to claim 1ly utilize that alkali soaks, classification and magnetic reconnection close and select v-ti magnetite concentrate againMethod, is characterized in that described magnetic separation adopts the magnetic dewater cone of 0.03T～0.05T to carry out magnetic separation.
4. according to claim 1ly utilize that alkali soaks, classification and magnetic reconnection close and select v-ti magnetite concentrate againMethod, it is characterized in that described magnetic separation adopt respectively the drum magnetic separator of 0.12T～0.15T and 0.03T～0.05T magnetic dewater cone carries out two stages of magnetic separation.
5. according to claim 1ly utilize that alkali soaks, classification and magnetic reconnection close and select v-ti magnetite concentrate againMethod, is characterized in that described gravity treatment adoptsThe spiral chute of rice carries out gravity treatment.
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| CN104888937A (en) * | 2015-06-12 | 2015-09-09 | 鞍钢集团矿业公司 | Vanadium-titanium magnetite concentrate method by using calcinations, oxidation by alkaline leaching, grading and magnetic gravitational reselection |
| 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 |
| CN105013608A (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, acid pickling, desliming and gravity and magnetism |
| CN104888938A (en) * | 2015-06-12 | 2015-09-09 | 鞍钢集团矿业公司 | Vanadium-titanium magnetite concentrate method by using calcinations, oxidation by alkaline leaching, grading and magnetic gravitational reselection |
| CN105921261B (en) * | 2016-07-06 | 2018-12-04 | 陕西冶金设计研究院有限公司 | A kind of super low-grade vanadium titano-magnetite utilization system and its utilize method |
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| US3712942A (en) * | 1968-05-29 | 1973-01-23 | Vyzk Ustav Kovu | Method of producing vanadium compounds by alkaline leaching |
| CN102127656B (en) * | 2010-01-13 | 2013-07-10 | 中国科学院过程工程研究所 | Method for decomposing vanadium slag by liquid phase oxidation |
| CN102181626B (en) * | 2011-04-08 | 2012-07-25 | 北京矿冶研究总院 | Beneficiation method of ilmenite |
| CN102534233A (en) * | 2012-02-10 | 2012-07-04 | 四川省达州钢铁集团有限责任公司 | Vanadium extraction technology of low-grade high-calcium vanadium-containing steel slag |
| CN103572063B (en) * | 2013-11-04 | 2015-08-19 | 中国科学院过程工程研究所 | A kind of vanadium slag reclaims the method for vanadium without sodium roasting clean and effective |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |