CN108325736A - A kind of Preconcentration of low-grade vanadium titano-magnetite - Google Patents
A kind of Preconcentration of low-grade vanadium titano-magnetite Download PDFInfo
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- CN108325736A CN108325736A CN201810032055.9A CN201810032055A CN108325736A CN 108325736 A CN108325736 A CN 108325736A CN 201810032055 A CN201810032055 A CN 201810032055A CN 108325736 A CN108325736 A CN 108325736A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
Abstract
The present invention relates to a kind of Preconcentrations of low-grade vanadium titano-magnetite.Its technical solution is：By low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, one section of high intensity magnetic separation is carried out under conditions of magnetic field intensity is 0.6 ~ 1.2T, obtains one section of high intensity magnetic separation concentrate and tailings；One section of high intensity magnetic separation concentrate is milled to grain size again and accounts for 50 ~ 80wt% less than 0.074mm, obtains ore milling product；The ore milling product is subjected to one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.08 ~ 0.20T, obtains weak magnetic concentrate selection and low intensity magnetic separation tailing；Then the low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing；The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.4 ~ 0.8T, obtains two stages of magnetic separation concentrate and tailings.The present invention has the characteristics that reduction throughput is notable, concentration ratio is high and at low cost.
Description
Technical field
The invention belongs to vanadium titano-magnetite ore dressing technical fields.More particularly to a kind of preenrichment of low-grade vanadium titano-magnetite
Method.
Background technology
Vanadium titano-magnetite is a kind of more metal mineral intergrowths containing vanadium, titanium, iron, has higher comprehensive utilization value.China
Vanadium titano-magnetite rich reserves, in addition to being mainly distributed on Pan Xi and Chengde area, China Chaoyang area keeps a large amount of low-grade
Vanadium titano-magnetite, prospective reserves are currently in state to be developed at 20,000,000,000 tons or more.When vanadium in v-ti magnetite green ore, titanium,
When the grade of iron is relatively low, ore-dressing technique will face the problem that throughput is big, ore grinding high energy consumption and production cost are high, therefore pass through
Efficient preenrichment technology of helping is the key that ensure that low-grade vanadium titano-magnetite realizes vanadium, titanium, iron high-efficiency comprehensive utilization.
In vanadium titano-magnetite, mainly preservation is in titanomagnetite in the form of isomorphous for vanadium, and the main preservation of titanium is in titanium
In iron ore.Currently, the technique of preparing of vanadium titano-magnetite is general first to recycle titanomagnetite, then the recovery Pd from weakly magnetic tailings with weak magnetic
Iron ore.Ilmenite technique of preparing mainly has：Gravity treatment, magnetic separation, flotation and electric separation；Though the separating effect of flotation and electric separation is good, it
Commonly used in selected, and when head grade is relatively low, since throughput is big, flotation and electric separation are respectively present reagent consumption
Greatly, the problem of high energy consumption.Therefore, inexpensive and environment amenable gravity treatment and magnetic separation work are first used to low-grade vanadium titano-magnetite
Skill carries out preenrichment, provides quality raw materials for flotation or electric separation and is of great significance.
" a kind of efficient ore dressing of synthetical recovery low-grade vanadium titano-magnetite "（CN 103736588 A）Patented technology, adopt
50% or more tailing is abandoned with primary grinding-low intensity magnetic separation pretreatment, to reduce two sections of workload.But this method allows originally
The tailing that can directly abandon enters primary grinding operation so that the energy consumption of primary grinding operation increases.
Han Yuanyan（Han Yuanyan, wears the new Yunnan low-grade ilmenite ore-dressing technique research [J] the mining and metallurgys of favour, and 2010,19
（4））Using low-grade ilmenite as research object, tailing is abandoned using gravity treatment in advance to raw ore, to reduce into sorting operation
Ore amount.Though this method can abandon a large amount of tailing, not high to the concentration ratio of ilmenite.
" side of the method and recycling ilmenite of ilmenite and its Treatment of Middling is recycled in iron tailings of low-grade vanadium titano gravity treatment
Method "（CN 106216083 A）Patented technology, ilmenite is recycled from iron tailings of low-grade vanadium titano using single gravity concentration.It should
Though method can obtain more high-grade ilmenite concentrate, the rate of recovery of titanium is relatively low.
" extreme poverty v-ti magnetite ore comprehensive reutilization method "（CN 103785518 A）Patented technology, with vanadium titanium magnetic
Tailing after Iron Mine iron uses single high intensity magnetic separation preenrichment ilmenite before flotation operation, can get as titanium raw ore is selected
TiO2The high intensity magnetic mineral of grade >=20%, though improve the grade into floating raw material.But poor value is handled with this method, can be deposited
The problem of throughput is big, high energy consumption.
Invention content
The present invention is directed to overcome prior art defect, it is therefore an objective to provide that a kind of reduction throughput is notable, concentration ratio is high
With the Preconcentration of low-grade vanadium titano-magnetite at low cost.
To achieve the above object, the step of the technical solution adopted by the present invention is：
（1）First by low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, then in the condition that magnetic field intensity is 0.6 ~ 1.2T
One section of high intensity magnetic separation of lower progress obtains one section of high intensity magnetic separation concentrate and tailings.
（2）One section of high intensity magnetic separation concentrate is milled to grain size and accounts for 50 ~ 80wt% less than 0.074mm, obtains ore milling product；Again
The ore milling product is subjected to one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.08 ~ 0.20T, obtains weak magnetic concentrate selection and weak
Magnetic tailing.
（3）The low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing.
（4）The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.4 ~ 0.8T, obtains two sections
Magnetic concentrate and tailing.
The low-grade vanadium titano-magnetite raw ore：V2O5Grade is 0.03 ~ 0.20wt%；TiO2Grade be 1.50 ~
4.50wt%；TFe grades are 8.00 ~ 18.00wt%.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art：
1, the present invention first passes through the tailing that strong magnetic abandons 60 ~ 90%, is greatly reduced into grinding operation before grinding operation
Ore amount, to significantly reduce the energy consumption of grinding operation.
2, the present invention first uses the gravity separation technology that treating capacity is big, low energy consumption to weakly magnetic tailings, abandons 40 ~ 70% tailing in advance,
The throughput for significantly reducing follow-up high intensity magnetic separation process, to reduce cost.
3, the present invention uses weight-magnetic process integration preenrichment weakly magnetic tailings, can get TiO2The titanium that grade is 21 ~ 25% is thick
Concentrate, concentration ratio is high, can provide quality raw materials for follow-up flotation or electric separation operation.
Therefore, the present invention has the characteristics that reduction throughput is notable, concentration ratio is high and at low cost.
Specific implementation mode
For a better understanding of the present invention, present disclosure is described further with reference to embodiment, but this
The content of invention is not limited solely to the following examples.Made by all substantive contents according to the present invention it is any it is simple modification and
Equivalent structure transformation or modification, are covered by the protection scope of the present invention.
Embodiment 1
A kind of Preconcentration of low-grade vanadium titano-magnetite.
The present embodiment use low-grade vanadium titano-magnetite raw ore be：V2O5Grade is 0.03 ~ 0.11wt%；TiO2Grade is
1.50~2.70wt%；TFe grades are 8.00 ~ 12.00wt%.
It is the step of Preconcentration described in the present embodiment：
（1）First by low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, then in the condition that magnetic field intensity is 0.8 ~ 1.2T
One section of high intensity magnetic separation of lower progress obtains one section of high intensity magnetic separation concentrate and tailings.
（2）One section of high intensity magnetic separation concentrate is milled to grain size and accounts for 60 ~ 70wt% less than 0.074mm, obtains ore milling product；Again
The ore milling product is subjected to one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.10 ~ 0.17T, obtains weak magnetic concentrate selection and weak
Magnetic tailing.
（3）The low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing.
（4）The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.5 ~ 0.7T, obtains two sections
Magnetic concentrate and tailing.
The present embodiment first passes through the tailing that strong magnetic abandons 60 ~ 80%, then use chute to weakly magnetic tailings before grinding operation
50 ~ 70% tailing is abandoned in sorting, and TiO is obtained finally by strong magnetic2The titanium rough concentrate that grade is 22 ~ 24%.
Embodiment 2
A kind of Preconcentration of low-grade vanadium titano-magnetite.
The present embodiment use low-grade vanadium titano-magnetite raw ore be：V2O5Grade is 0.08 ~ 0.16wt%；TiO2Grade is
2.40~3.60wt%；TFe grades are 11.00 ~ 15.00wt%.
It is the step of Preconcentration described in the present embodiment：
（1）First by low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, then in the condition that magnetic field intensity is 0.7 ~ 1.0T
One section of high intensity magnetic separation of lower progress obtains one section of high intensity magnetic separation concentrate and tailings.
（2）One section of high intensity magnetic separation concentrate is milled to grain size and accounts for 50 ~ 60wt% less than 0.074mm, obtains ore milling product；Again
The ore milling product is subjected to one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.14 ~ 0.20T, obtains weak magnetic concentrate selection and weak
Magnetic tailing.
（3）The low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing.
（4）The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.4 ~ 0.6T, obtains two sections
Magnetic concentrate and tailing.
The present embodiment first passes through the tailing that strong magnetic abandons 70 ~ 90%, then use chute to weakly magnetic tailings before grinding operation
40 ~ 60% tailing is abandoned in sorting, and TiO is obtained finally by strong magnetic2The titanium rough concentrate that grade is 21 ~ 23%.
Embodiment 3
A kind of Preconcentration of low-grade vanadium titano-magnetite.
The present embodiment use low-grade vanadium titano-magnetite raw ore be：V2O5Grade is 0.12 ~ 0.20wt%；TiO2Grade is
3.30~4.50wt%；TFe grades are 14.00 ~ 18.00wt%.
It is the step of Preconcentration described in the present embodiment：
（1）First by low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, then in the condition that magnetic field intensity is 0.6 ~ 0.9T
One section of high intensity magnetic separation of lower progress obtains one section of high intensity magnetic separation concentrate and tailings.
（2）One section of high intensity magnetic separation concentrate is milled to grain size and accounts for 70 ~ 80wt% less than 0.074mm, obtains ore milling product；Again
The ore milling product is subjected to one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.08 ~ 0.14T, obtains weak magnetic concentrate selection and weak
Magnetic tailing.
（3）The low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing.
（4）The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.6 ~ 0.8T, obtains two sections
Magnetic concentrate and tailing.
The present embodiment first passes through the tailing that strong magnetic abandons 80 ~ 90%, then use chute to weakly magnetic tailings before grinding operation
40 ~ 50% tailing is abandoned in sorting, and TiO is obtained finally by strong magnetic2The titanium rough concentrate that grade is 22 ~ 25%.
Present embodiment compared with prior art, has the positive effect that：
1, present embodiment first passes through the tailing that strong magnetic abandons 60 ~ 90% before grinding operation, is greatly reduced into mill
The ore amount of mine operation, to significantly reduce the energy consumption of grinding operation.
2, present embodiment first uses the gravity separation technology that treating capacity is big, low energy consumption to weakly magnetic tailings, abandon 40 in advance ~
70% tailing significantly reduces the throughput of follow-up high intensity magnetic separation process, to reduce cost.
3, present embodiment uses weight-magnetic process integration preenrichment weakly magnetic tailings, can get TiO2Grade be 21 ~
25% titanium rough concentrate, concentration ratio is high, can provide quality raw materials for follow-up flotation or electric separation operation.
Therefore, present embodiment has the characteristics that reduction throughput is notable, concentration ratio is high and at low cost.
Claims (2)
1. a kind of Preconcentration of low-grade vanadium titano-magnetite, which is characterized in that it is as follows：
（1）First by low-grade vanadium titano-magnetite crushing raw ore to grain size≤3mm, then in the condition that magnetic field intensity is 0.6 ~ 1.2T
One section of high intensity magnetic separation of lower progress obtains one section of high intensity magnetic separation concentrate and tailings；
（2）One section of high intensity magnetic separation concentrate is milled to grain size and accounts for 50 ~ 80wt% less than 0.074mm, obtains ore milling product；Again by institute
It states ore milling product and carries out one section of low intensity magnetic separation under conditions of magnetic field intensity is 0.08 ~ 0.20T, obtain weak magnetic concentrate selection and low intensity magnetic separation
Tailing；
（3）The low intensity magnetic separation tailing is subjected to sluicing, obtains gravity concentrate and tailing；
（4）The gravity concentrate is subjected to two sections of high intensity magnetic separations under conditions of magnetic field intensity is 0.4 ~ 0.8T, obtains two stages of magnetic separation
Concentrate and tailings.
2. the Preconcentration of low-grade vanadium titano-magnetite according to claim 1, it is characterised in that the low grade vanadium
Titanomagnetite raw ore：V2O5Grade is 0.03 ~ 0.20wt%；TiO2Grade is 1.50 ~ 4.50wt%；TFe grades be 8.00 ~
18.00wt%。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841881A (en) * | 2020-07-29 | 2020-10-30 | 攀钢集团矿业有限公司 | Method for recovering titanomagnetite in beneficiation process |
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| CN101564707A (en) * | 2009-05-15 | 2009-10-28 | 四川安宁铁钛股份有限公司 | Vanadium titano-magnetite screen method |
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| CN104394993A (en) * | 2013-02-01 | 2015-03-04 | 河北联合大学 | method for pre-treating ilmenite tailings after iron-beneficiation |
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Patent Citations (6)
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| CN101564707A (en) * | 2009-05-15 | 2009-10-28 | 四川安宁铁钛股份有限公司 | Vanadium titano-magnetite screen method |
| CN102814230A (en) * | 2012-09-06 | 2012-12-12 | 昆明冶金研究院 | Beneficiation method for separating and comprehensively recycling ferrotitanium in titaniferous iron ore concentrate |
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| CN111841881A (en) * | 2020-07-29 | 2020-10-30 | 攀钢集团矿业有限公司 | Method for recovering titanomagnetite in beneficiation process |
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