CN103962219A - Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, classification and combined magnetic-gravity separation - Google Patents
Vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, classification and combined magnetic-gravity separation Download PDFInfo
- Publication number
- CN103962219A CN103962219A CN201410164182.6A CN201410164182A CN103962219A CN 103962219 A CN103962219 A CN 103962219A CN 201410164182 A CN201410164182 A CN 201410164182A CN 103962219 A CN103962219 A CN 103962219A
- Authority
- CN
- China
- Prior art keywords
- concentrate
- magnetic
- content
- classification
- alkali
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a vanadium-titanium magnetite concentrate recleaning method realized through alkaline leaching, classification 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 form pulp with a mass concentration of 20%-25%, and feeding the pulp into a cyclone for classification to obtain effused flow and set sand B; adding water into the set sand B to obtain pulp with a mass concentration of 30%-41%, and conducting magnetic separation and gravity separation to obtain iron ore concentrate with the TFe content ranging from 63% to 68% and titanium concentrate with the TiO2 content ranging from 50% to 70%. 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, classification 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 that to take iron content, vanadium, titanium be the magnetic iron ore of 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] complex that forms.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 forms complexity, 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 by the beneficiation method of physics, sort the value that titanium iron ore greatly reduces titanium and the independent utilization of iron.
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 by ore grinding, alkali soak pretreatment, filtration, magnetic separation is processed after ore grinding again, 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, to want to realize effective separation in follow-up magnetic separation be very difficult, and this has also restricted the raising that ferrotianium raw ore alkali soaks rear iron concentrate grade and ilmenite concentrate grade.Meanwhile, the method adopts twice grinding process to change mineral surfaces physicochemical properties, has increased complexity and the process cost of the method.In a word, by this kind of procedure complexity, and in processing procedure, quantity of alkali consumption is large, cost is high; Meanwhile, cannot obtain more high-grade iron ore concentrate and ilmenite concentrate.
Summary of the invention
In order to overcome the deficiency of above-mentioned beneficiation method, technical problem to be solved by this invention is on the basis of the effective combination of physics and chemistry beneficiation method, provide a kind of cost low, reclaim quality and efficiency is high, technique is simple, and good operability utilize that alkali soaks, classification, magnetic reconnection close the method for selecting again v-ti magnetite concentrate, realized titanium, iron in v-ti magnetite concentrate have been carried out to efficient separation, improved 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, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate, it is characterized in that comprising the steps:
1) alkali soaks
By TFe content range, be 50%～55%, TiO
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 ℃～370 ℃, alkali soaks reaction 0.5～5 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 20%～25% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30%～34% and carry out magnetic separation, respectively magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 36%～41% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content range is 63%～68% final iron ore concentrate, gravity concentrate E and overflow Y merge into TiO
2content range is 50%～70% final ilmenite concentrate, and gravity tailings F is true tailings.
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 utilize that alkali soaks, classification 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 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, has realized titanium in v-ti magnetite concentrate, iron efficiently separated; 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 than alkali, soak ferrotianium raw ore alkali consumption still less, better effects if.For example, while soaking with NaOH alkali, the alkali number that the present invention consumes is less than 100kg/t concentrate, and the alkali number 469kg/t raw ore that soaks raw ore consumption than alkali has reduced more than 4.6 times.
Cyclone is pressed granularity and the gravity grading of mineral, and alkali soaks the titanium compound of rear generation than the fine size of iron mineral, and proportion is little, the difference of specific gravity of titanium, iron is larger, has realized effective separation of titanium, iron.
Add magnetic reconnection and close ore dressing, make iron concentrate grade bring up to 63%～68% by 50%～55%, in iron ore concentrate, containing S amount, be less than 0.1%, SiO 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 50%～70% ilmenite concentrate.Adopt the method, realized titanium, iron are carried out to effective separation, 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.
Accompanying drawing explanation
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.
The specific embodiment
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
By TFe content, be 52.8%, TiO
2content is 12.5%, SiO
2content is 4.75%, Al
2o
3content is 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 ℃, alkali soaks reaction 5 hours, reactant is filtered, obtain 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, the ore pulp that forms mass concentration 20% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30% to feed field intensity be that 0.13T drum magnetic separator carries out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 36% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content is 64.2% final iron ore concentrate (SiO
2content is 0.48%, Al
2o
3content is 1.55%, S content is 0.02%), gravity concentrate E and overflow Y merge into TiO
2content is 51.3% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 2:
As shown in Figure 1.
1) alkali soaks
By TFe content, be 51.2%, TiO
2content is 11.1%, SiO
2content is 4.75%, Al
2o
3content is 4.82%, the v-ti magnetite concentrate of S content 0.81%, be placed in mass concentration and be 15% NaOH aqueous slkali, at the temperature of 290 ℃, alkali soaks reaction 4 hours, reactant is filtered, obtain 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 with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 21% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 31% to feed field intensity be that 0.05T magnetic dewater cone carries out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 38% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content is 65.3% final iron ore concentrate (SiO
2content is 0.46%, Al
2o
3content is 1.50%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 53.1% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 3:
As shown in Figure 1.
1) alkali soaks
By TFe content, be 50.8%, TiO
2content is 14.5%, SiO
2content is 4.65%, Al
2o
3content is 4.72%, the v-ti magnetite concentrate of S content 0.66%, be placed in mass concentration and be 22% NaOH aqueous slkali, at the temperature of 310 ℃, alkali soaks reaction 3 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 80kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 22% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30% to feed field intensity be that 0.03T magnetic dewater cone carries out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 39% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content is 65.9% final iron ore concentrate (SiO
2content is 0.43%, Al
2o
3content is 1.26%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 60.7% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 4:
As shown in Figure 1.
1) alkali soaks
By TFe content, be 53.1%, TiO
2content is 11.6%, SiO
2content is 4.65%, Al
2o
3content is 4.81%, the v-ti magnetite concentrate of S content 0.74%, be placed in mass concentration and be 30% NaOH aqueous slkali, at the temperature of 330 ℃, alkali soaks reaction 2 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, NaOH consumption 79kg/t is to ore deposit, and described filtrate feeds recovery and processing system, and its chemical equation is with embodiment 1.
2) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 23% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 32% to feed field intensity be that 0.05T magnetic dewater cone carries out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 40% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content is 66.5% final iron ore concentrate (SiO
2content is 0.46%, Al
2o
3content is 1.28%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 62.7% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 5:
As shown in Figure 2.
1) alkali soaks
By TFe content, be 52.2%, TiO
2content is 12.7%, SiO
2content is 3.91%, Al
2o
3content is 4.61%, the v-ti magnetite concentrate of S content 0.70%, be placed in mass concentration and be 42% KOH aqueous slkali, at the temperature of 290 ℃, alkali soaks reaction 1.5 hours, reactant is filtered, obtain 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, the ore pulp that forms mass concentration 24% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 33% to feed field intensity be that 0.05T magnetic dewater cone carries out magnetic separation, obtain magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 40% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content is 67.1% final iron ore concentrate (SiO
2content is 0.44%, Al
2o
3content is 1.21%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 64.6% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 6:
As shown in Figure 2.
1) alkali soaks
By TFe content, be 54.8%, TiO
2content is 10.5%, SiO
2content is 3.45%, Al
2o
3content is 4.33%, the v-ti magnetite concentrate of S content 0.62%, be placed in mass concentration and be 51% KOH aqueous slkali, at the temperature of 300 ℃, alkali soaks reaction 1.5 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) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 25% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30% to feed field intensity be that 0.05T magnetic dewater cone carries out magnetic separation, obtain a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; It is that 0.13T drum magnetic separator carries out two stages of magnetic separation that one stages of magnetic separation concentrate C1 is fed to field intensity, obtains two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailing D2; Two stages of magnetic separation mine tailing D1 and D2 are merged and add water and make the ore pulp of mass concentration 41% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C2 is that TFe content is 67.9% final iron ore concentrate (SiO
2content is 0.38%, Al
2o
3content is 1.24%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 68.6% final ilmenite concentrate, and gravity tailings F is true tailings.
Embodiment 7:
As shown in Figure 2.
1) alkali soaks
By TFe content, be 54.5%, TiO
2content is 10.9%, SiO
2content is 3.40%, Al
2o
3content is 4.35%, the v-ti magnetite concentrate of S content 0.65%, the aqueous slkali that be placed in NaOH mass concentration and be 25%, KOH mass concentration is 10%, at the temperature of 295 ℃, alkali soaks reaction 1.5 hours, reactant is filtered, obtain filtrate and alkali leaching cake A, 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, the ore pulp that forms mass concentration 25% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y.
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30% to feed field intensity be that 0.05T magnetic dewater cone carries out magnetic separation, obtain a stages of magnetic separation concentrate C1 and a stages of magnetic separation mine tailing D1; It is that 0.13T drum magnetic separator carries out two stages of magnetic separation that one stages of magnetic separation concentrate C1 is fed to field intensity, obtains two stages of magnetic separation concentrate C2 and two stages of magnetic separation mine tailing D2; Two stages of magnetic separation mine tailing D1 and D2 are merged and add water and make the ore pulp of mass concentration 41% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C2 is that TFe content is 67.0% final iron ore concentrate (SiO
2content is 0.38%, Al
2o
3content is 1.24%, S content is 0.01%), gravity concentrate E and overflow Y merge into TiO
2content is 68.0% final ilmenite concentrate, and gravity tailings F is true tailings.
Claims (6)
1. utilize that alkali soaks, classification and magnetic reconnection close a method of selecting again v-ti magnetite concentrate, it is characterized in that comprising the steps:
1) alkali soaks
By TFe content range, be 50%～55%, TiO
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 ℃～370 ℃, alkali soaks reaction 0.5～5 hour, reactant is filtered, obtain filtrate and alkali leaching cake A, described filtrate feeds recovery and processing system;
2) classification
By step 1) in alkali leaching cake A add water, the ore pulp that forms mass concentration 20%～25% feeds cyclone and carries out classification, classification goes out sand setting B and overflow Y;
3) magnetic reconnection closes ore dressing
By step 2) in sand setting B add water and make the ore pulp of mass concentration 30%～34% and carry out magnetic separation, respectively magnetic concentrate C and magnetic tailing D;
Again magnetic tailing D is added to water and makes the ore pulp of mass concentration 36%～41% and carry out gravity treatment, respectively gravity concentrate E and gravity tailings F, described magnetic concentrate C is that TFe content range is 63%～68% final iron ore concentrate, gravity concentrate E and overflow Y merge into TiO
2content range is 50%～70% final ilmenite concentrate, and gravity tailings F is true tailings.
2. according to claim 1ly utilize that alkali soaks, classification 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, classification 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, classification 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, classification 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, classification 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 1.2 meters of ￠ 0.6～￠ to carry out gravity treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164182.6A CN103962219B (en) | 2014-04-23 | 2014-04-23 | Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164182.6A CN103962219B (en) | 2014-04-23 | 2014-04-23 | Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103962219A true CN103962219A (en) | 2014-08-06 |
| CN103962219B CN103962219B (en) | 2016-05-04 |
Family
ID=51232504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410164182.6A Active CN103962219B (en) | 2014-04-23 | 2014-04-23 | Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103962219B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| CN105921261A (en) * | 2016-07-06 | 2016-09-07 | 陕西冶金设计研究院有限公司 | Comprehensive utilization system and method of ultralow-grade vanadium titano-magnetite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3712942A (en) * | 1968-05-29 | 1973-01-23 | Vyzk Ustav Kovu | Method of producing vanadium compounds by alkaline leaching |
| CN102127656A (en) * | 2010-01-13 | 2011-07-20 | 中国科学院过程工程研究所 | Method for decomposing vanadium slag by liquid phase oxidation |
| CN102181626A (en) * | 2011-04-08 | 2011-09-14 | 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 |
| CN103572063A (en) * | 2013-11-04 | 2014-02-12 | 中国科学院过程工程研究所 | Method for cleanly and efficiently recovering vanadium from vanadium slag by employing sodium-free roasting |
-
2014
- 2014-04-23 CN CN201410164182.6A patent/CN103962219B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3712942A (en) * | 1968-05-29 | 1973-01-23 | Vyzk Ustav Kovu | Method of producing vanadium compounds by alkaline leaching |
| CN102127656A (en) * | 2010-01-13 | 2011-07-20 | 中国科学院过程工程研究所 | Method for decomposing vanadium slag by liquid phase oxidation |
| CN102181626A (en) * | 2011-04-08 | 2011-09-14 | 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 |
| CN103572063A (en) * | 2013-11-04 | 2014-02-12 | 中国科学院过程工程研究所 | Method for cleanly and efficiently recovering vanadium from vanadium slag by employing sodium-free roasting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| CN105921261A (en) * | 2016-07-06 | 2016-09-07 | 陕西冶金设计研究院有限公司 | Comprehensive utilization system and method of ultralow-grade vanadium titano-magnetite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103962219B (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103966435B (en) | Alkali leaching, pickling and magnetic separation is utilized to select the method for v-ti magnetite concentrate again | |
| CN103962221B (en) | Alkali leaching, classification and reverse flotation is utilized to select the method for v-ti magnetite concentrate again | |
| CN103962219B (en) | Utilize that alkali soaks, classification and magnetic reconnection close the method for selecting again v-ti magnetite concentrate | |
| CN103952533B (en) | Calcining, alkali leaching and desliming is utilized to select the method for v-ti magnetite concentrate again | |
| CN103977880B (en) | Method for recleaning of vanadium-titanium magnetite concentrates by utilizing alkaline leaching, desliming and magnetic-gravity combined separation | |
| CN103949335B (en) | Utilize the method that v-ti magnetite concentrate is selected in alkali leaching, classification and magnetic separation again | |
| CN103962222B (en) | Utilize the method that v-ti magnetite concentrate is selected in calcining, alkali leaching, desliming and magnetic separation again | |
| CN103952532B (en) | Utilize the method that alkali soaks, v-ti magnetite concentrate is selected in classification again | |
| CN103966423B (en) | Alkali leaching, pickling and gravity treatment is utilized to select the method for v-ti magnetite concentrate again | |
| CN103966436B (en) | Utilize the method that alkali soaks, v-ti magnetite concentrate is selected in desliming again | |
| CN103962229B (en) | Utilize calcining, alkali soaks, classification and magnetic reconnection close and select v-ti magnetite concentrate method again | |
| CN103962226B (en) | Calcining, alkali leaching, pickling and magnetic reconnection is utilized to close and select v-ti magnetite concentrate method again | |
| CN103966422B (en) | Calcining, alkali leaching, pickling and gravity treatment is utilized to select the method for v-ti magnetite concentrate again | |
| CN103962225B (en) | The method of utilize that alkali soaks, v-ti magnetite concentrate being selected in classification and gravity treatment again | |
| CN103962220B (en) | Alkali leaching, pickling, desliming and heavy magnetic associating is utilized to select v-ti magnetite concentrate method again | |
| CN103962227B (en) | Utilize the method that v-ti magnetite concentrate is selected in alkali leaching, desliming and gravity treatment again | |
| CN103962228B (en) | Utilize calcining, alkali leaching, classification and heavily select the method selecting v-ti magnetite concentrate again | |
| CN103962224B (en) | Alkali leaching, pickling and magnetic reconnection is utilized to close the method selecting v-ti magnetite concentrate again | |
| CN103962218B (en) | Utilize calcining, alkali leaching, desliming and heavily select the method selecting v-ti magnetite concentrate again | |
| CN103962223B (en) | Utilize the method that v-ti magnetite concentrate is selected in calcining, alkali leaching, classification again | |
| CN104689902A (en) | Method for recleaning vanadium-titanium magnetite concentrates by utilizing alkaline leaching, acid pickling, desliming and reverse flotation | |
| CN103952549B (en) | Alkali leaching, pickling and reverse flotation is utilized to select the method for v-ti magnetite concentrate again | |
| CN105296752A (en) | Method for recleaning vanadium-titanium magnetite concentrates by using oxidation and alkaline leaching, desliming and combined magneto-gravity separation | |
| CN104878221A (en) | Method for utilizing oxidation alkaline leaching and desliming to re-concentrate vanadium-titanium magnetite concentrates | |
| CN105013608A (en) | Vanadium-titanium magnetite concentrate re-concentration method achieved through oxidation alkaline leaching, acid pickling, desliming and gravity and magnetism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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. |