CN107694745A - A kind of elutriation magnetic separator tailing treatment technology - Google Patents
A kind of elutriation magnetic separator tailing treatment technology Download PDFInfo
- Publication number
- CN107694745A CN107694745A CN201711126417.2A CN201711126417A CN107694745A CN 107694745 A CN107694745 A CN 107694745A CN 201711126417 A CN201711126417 A CN 201711126417A CN 107694745 A CN107694745 A CN 107694745A
- Authority
- CN
- China
- Prior art keywords
- magnetic separator
- concentration
- tailing
- elutriation
- bitubular
- 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.)
- Withdrawn
Links
Classifications
-
- 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
A kind of elutriation magnetic separator tailing treatment technology of the present invention, comprises the following steps：By the elutriation magnetic separator mine tailing that Iron grade is 25%~35%, feed bitubular concentration magnetic separator of the magnetic field intensity more than 3000Oe and carry out two sections of continuous concentration magnetic separation, bitubular concentration magnetic separator mine tailing is back to preamble magnetic separation process and used as recirculated water, bitubular concentration magnetic separator concentrate feeds vertical grinder and carries out open-circuit grinding, the ore discharge of vertical mill feeds magnetic field intensity and sweeps magnetomechanical more than 2000Oe, the magnetomechanical concentrate of sweeping that Iron grade is 40% ~ 45% returns to elutriation magnetic separator composition closed cycle, and the magnetomechanical mine tailing of sweeping that Iron grade is 15%~20% feeds Tailing thickening pond.It is an advantage of the invention that：1~2 percentage point is improved compared with traditional handicraft using this technique iron recovery, tailings grade is reduced to less than 20% by 30% or so, improves iron resource utilization rate, is ore dressing plant both upgrading synergy, and energy-saving.
Description
Technical field
The invention belongs to iron ore beneficiation technology field, and in particular to produce high grade iron concentrate using elutriation magnetic separator
Elutriation magnetic separator tailing treatment technology.
Background technology
The current magnetite beneficiation process in China carries out ore dressing using weak magnetic separator more, because weak magnetic separator equipment limits in itself
System, most of ore dressing plant production Iron grades are less than 66% conventional fine ore.Root burns it was found that improving iron concentrate grade to follow-up
Knot, Iron-smelting play the role of it is significant it is energy-saving, reduce cost, native land man also begins to encourage and promotes each ore dressing plant to carry out
The upgrading drop general labourer of iron ore concentrate makees.In this context, using magnetic agglomeration gravity separator and column magnetic separator as representative elutriation magnetic separator as
Magnetic iron ore upgrading drop miscellaneous equipment starts large area and applied in ore dressing plant.Found in actual production, elutriation magnetic separator concentrate product
Although position can improve the iron ore concentrate of 66% grade to the requirement of the high-quality concentrate of grade 68% ~ 69%, because the kind equipment is given birth to
Substantial amounts of water is needed to use to discharge lean intergrowth by top overfall as lifting power in production, therefore there is also following deficiency
Place：First, the tailings grade of discharge is high, hardly possible control；Second, the tailings concentration of discharge is extremely low, about 2% or so, and be -200 mostly
The fine fraction lean intergrowth of mesh 80% or so, it is difficult to reclaimed.In actual production, a part of ore dressing plant is by this fraction grades
Higher mine tailing is as Treatment of Middling, and after returning to the concentrated magnetic separation-closed circuit grinding-magnetic separation of former flow, magnetic separation rough concentrate is fed again
Elutriation magnetic separator, realize closed cycle；Also the higher mine tailing of this fraction grades is directly imported total mine tailing by some ore dressing plant
In, cause the loss of iron resource and the waste of water resource.
The content of the invention
It is an object of the invention to provide a kind of simple and reliable, energy-saving and water-saving, the elutriation magnetic separator mine tailing of raising iron recovery
Handling process.
What the present invention was realized in.
A kind of elutriation magnetic separator tailing treatment technology of the present invention, it is characterised in that comprise the following steps：
By the elutriation magnetic separator mine tailing that Iron grade is 25% ~ 35%, feed bitubular concentration magnetic separator and carry out two sections of continuous concentration magnetic separation,
Bitubular concentration magnetic separator mine tailing is back to preamble magnetic concentration working and used as recirculated water, and bitubular concentration magnetic separator concentrate feeds Vertical Mill
Machine carries out open-circuit grinding, and the ore discharge of high-efficiency vertical mill, which is fed, sweeps magnetomechanical, and the concentrate for sweeping magnetomechanical that Iron grade is 40% ~ 45%, which returns, to be washed in a pan
Magnetic separation mechanism is washed into circulation, the magnetomechanical mine tailing of sweeping that Iron grade is 15% ~ 20% feeds Tailing thickening pond.
The magnetic field intensity of described bitubular concentration magnetic separator is more than 3000 Oe.
The described magnetic field intensity for sweeping magnetomechanical is more than 2000 Oe.
Described vertical mill model specification selects according to disposal ability
It is an advantage of the invention that：
1）Apply big field strength bitubular concentration magnetic separator and concentration magnetic separation is carried out to elutriation magnetic separator mine tailing, reclaim the poor adhesion of iron content
Body, concentration improve to meeting the 60% of vertical mill ore milling concentration requirement, configure advantages of simple, avoid using thickener；It is conventional single
Cylinder magnetic separator can not realize above-mentioned grinding process requirement.
2）Employ vertical mill and open-circuit grinding is carried out to elutriation magnetic separator mine tailing, realize particulate iron mineral intergrowth monomer
Dissociation, avoids using closed circuit grinding, reduces classifying equipoment and pumping equipment, energy-saving；Vertical mill is applied to this work
Skill has novelty.
3）Vertical Mill ore discharge, which is fed, to be scanned magnetic separator and selects again, is reduced tailings grade, is reclaimed the dissociation iron ore after ore grinding
Thing, return it to elutriation magnetic separator and form closed cycle, high-quality concentrate is obtained after sorting.
4）1~2 percentage point is improved compared with traditional handicraft using above-mentioned technique iron recovery, tailings grade is by 30% or so drop
As little as less than 20%, resource utilization is improved, adds ore dressing plant benefit.
Brief description of the drawings
Fig. 1 is a kind of elutriation magnetic separator tailing treatment technology flow chart of the present invention.
Fig. 2 is the process chart of the embodiment of the present invention 2.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As shown in figure 1, a kind of elutriation magnetic separator tailing treatment technology of the present invention, comprises the following steps：
By the elutriation magnetic separator mine tailing that Iron grade is 30%, feed bitubular concentration magnetic separator of the magnetic field intensity more than 3000Oe and carry out
Two sections of continuous concentration magnetic separation, bitubular concentration magnetic separator mine tailing are back to preamble magnetic separation process and used as recirculated water, bitubular concentration
Magnetic separator concentrate feeds vertical mill and carries out open-circuit grinding, and the ore discharge of vertical mill feeds magnetic field intensity and sweeps magnetomechanical more than 2000Oe,
Iron grade be 41% sweep magnetomechanical concentrate return elutriation magnetic separator form closed cycle, Iron grade be 16.5% sweep magnetomechanical mine tailing to
Enter Tailing thickening pond.Vertical mill has been used, the form grinding machine concentration is less than conventional mill, beneficial to wash mill Tailing thickening operation,
And reduce whole system energy consumption.
Embodiment 2
As shown in Fig. 2 the t/a of certain ore dressing plant production iron ore concentrate amount about 1,000,000, Fe grades 66%, in order to improve iron ore concentrate matter in production
Amount, adds elutriation magnetic separator technique.During using traditional handicraft, the concentrate grade of elutriation magnetic separator>68%, elutriation magnetic separator
Tailings grade is 33.42%.Elutriation magnetic separator water consumption is very big, rate of water make-up 717.23m3/h, about 5.7 m3/ t is to ore deposit, tail
Ore deposit concentration about 1%.This part mine tailing feeds Tailing thickening pond, and a large amount of particulate iron mineral intergrowths are lost in mine tailing, fed simultaneously
About 763 m3/ h water, had both added the load in Tailing thickening pond, added about 763 extra m again3/ h water is through tail
The big flow circulation of ore deposit concentration basin-backwater pumping plant-ore-sorting system, causes the waste of electric energy.
Using the elutriation magnetic separator tailing treatment technology of the present invention, elutriation magnetic separator is weak magnetic concentrate selection to ore deposit, by washing in a pan
Wash the high-quality concentrate that magnetic separator obtains grade 69% under weight-field of magnetic forece synergy, while ascending current is by gangue and poor company
Raw body is discharged by overfall as elutriation magnetic separator mine tailing；For prevent run tail, grade be 30% elutriation magnetic separator mine tailing flow automatically to
Enter the bitubular concentration magnetic separator to magnetic field intensity more than 3000Oe and carry out two sections of continuous concentration magnetic separation, bitubular concentration magnetic separator mine tailing
It is back to the stages of magnetic separation of preamble one or two stages of magnetic separation uses as recirculated water, bitubular concentration magnetic separator concentrate concentration is improved to 60%, full
The ore milling concentration requirement of sufficient high-efficiency vertical mill；Bitubular concentration magnetic separator concentrate feeds high-efficiency vertical mill and carries out open-circuit grinding, realizes
By most of fine fraction intergrowth monomer dissociation；The ore discharge of high-efficiency vertical mill feeds sweep magnetomechanical of the magnetic field intensity more than 2000Oe and entered
Row is scanned, and realizes the recovery of the intergrowth containing Armco magnetic iron by the iron mineral of monomer dissociation after ore grinding and part, the grade of recovery is 41%
Magnetomechanical concentrate of sweeping be back to elutriation magnetic separator and carry out that upgrading drop is miscellaneous to be sorted again, grade is 16.5% to sweep magnetomechanical mine tailing conduct
The true tailings of elutriation magnetic separator feeds Tailing thickening operation.
Using present invention process, under conditions of elutriation magnetic separator mine tailing property is constant, elutriation magnetic separator concentrate has been obtained
Grade 69%, about 1 percentage point being improved, the mine tailing for sweeping magnetomechanical only has 16.5% as the true tailings grade of elutriation magnetic separator,
About 15 percentage points are reduced, iron recovery improves about 2 percentage points；Only 23.06m simultaneously3/ h water feeds concentration basin, greatly
Reduce Tailing thickening load greatly；Bitubular concentration magnetic separator mine tailing can directly return to preamble technological process as backwater, without warp
The big flow circulation of Tailing thickening pond-backwater pumping plant-ore-sorting system is crossed, reduces system entirety energy consumption.
Claims (3)
1. a kind of elutriation magnetic separator tailing treatment technology, it is characterised in that comprise the following steps：
By the elutriation magnetic separator mine tailing that Iron grade is 25% ~ 35%, feed bitubular concentration magnetic separator and carry out two sections of continuous concentration magnetic separation,
Bitubular concentration magnetic separator mine tailing is back to preamble magnetic separation process and used as recirculated water, and bitubular concentration magnetic separator concentrate feeds Vertical Mill
Machine carries out open-circuit grinding, and the ore discharge of high-efficiency vertical mill, which is fed, sweeps magnetomechanical, and the concentrate for sweeping magnetomechanical that Iron grade is 40% ~ 45%, which returns, to be washed in a pan
Magnetic separation mechanism is washed into closed cycle, the magnetomechanical mine tailing of sweeping that Iron grade is 15% ~ 20% feeds Tailing thickening pond.
A kind of 2. elutriation magnetic separator tailing treatment technology according to claim 1, it is characterised in that described bitubular concentration
The magnetic field intensity of magnetic separator is more than 3000Oe.
A kind of 3. elutriation magnetic separator tailing treatment technology according to claim 1, it is characterised in that described magnetomechanical of sweeping
Magnetic field intensity is more than 2000Oe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126417.2A CN107694745A (en) | 2017-11-15 | 2017-11-15 | A kind of elutriation magnetic separator tailing treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126417.2A CN107694745A (en) | 2017-11-15 | 2017-11-15 | A kind of elutriation magnetic separator tailing treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107694745A true CN107694745A (en) | 2018-02-16 |
Family
ID=61179538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711126417.2A Withdrawn CN107694745A (en) | 2017-11-15 | 2017-11-15 | A kind of elutriation magnetic separator tailing treatment technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107694745A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672084A (en) * | 2018-05-28 | 2018-10-19 | 黄双智 | A kind of technique and device improving iron ore concentrate slurry concentration |
| CN110624686A (en) * | 2019-09-03 | 2019-12-31 | 魏建民 | Magnetite beneficiation process capable of fully releasing mill capacity |
| CN114939477A (en) * | 2022-06-13 | 2022-08-26 | 太原钢铁(集团)有限公司 | Method for enriching and recovering tailings in magnetic gravity separation micro-fine particles |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2427430C1 (en) * | 2010-04-08 | 2011-08-27 | Открытое акционерное общество "Михайловский ГОК" | Method of extracting haematite from composite iron ore wet magnetic separation tailings |
| CN204911756U (en) * | 2015-08-24 | 2015-12-30 | 石家庄金垦科技有限公司 | Hierarchical ore dressing system of water -saving magnetic iron ore |
| CN105195304A (en) * | 2015-07-24 | 2015-12-30 | 石家庄金垦科技有限公司 | Sorting process for improving quality and reducing impurities of low-grade magnetite concentrate |
| CN105689117A (en) * | 2016-02-05 | 2016-06-22 | 鄂尔多斯市君致清环境科技有限公司 | Concentration magnetic separator and concentration method based on concentration magnetic separator |
| CN106345606A (en) * | 2016-08-26 | 2017-01-25 | 中冶北方（大连）工程技术有限公司 | Method for improving quality of mineral processing and production capacity of magnetite concentrating mill |
| CN106824508A (en) * | 2017-01-10 | 2017-06-13 | 中冶北方（大连）工程技术有限公司 | A kind of broken mill ore magnetic selection technique of magnetic iron ore |
-
2017
- 2017-11-15 CN CN201711126417.2A patent/CN107694745A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2427430C1 (en) * | 2010-04-08 | 2011-08-27 | Открытое акционерное общество "Михайловский ГОК" | Method of extracting haematite from composite iron ore wet magnetic separation tailings |
| CN105195304A (en) * | 2015-07-24 | 2015-12-30 | 石家庄金垦科技有限公司 | Sorting process for improving quality and reducing impurities of low-grade magnetite concentrate |
| CN204911756U (en) * | 2015-08-24 | 2015-12-30 | 石家庄金垦科技有限公司 | Hierarchical ore dressing system of water -saving magnetic iron ore |
| CN105689117A (en) * | 2016-02-05 | 2016-06-22 | 鄂尔多斯市君致清环境科技有限公司 | Concentration magnetic separator and concentration method based on concentration magnetic separator |
| CN106345606A (en) * | 2016-08-26 | 2017-01-25 | 中冶北方（大连）工程技术有限公司 | Method for improving quality of mineral processing and production capacity of magnetite concentrating mill |
| CN106824508A (en) * | 2017-01-10 | 2017-06-13 | 中冶北方（大连）工程技术有限公司 | A kind of broken mill ore magnetic selection technique of magnetic iron ore |
Non-Patent Citations (1)
| Title |
|---|
| 杨海龙等: "全自动淘洗磁选机在提铁降杂工程中的应用", 《矿业工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672084A (en) * | 2018-05-28 | 2018-10-19 | 黄双智 | A kind of technique and device improving iron ore concentrate slurry concentration |
| CN110624686A (en) * | 2019-09-03 | 2019-12-31 | 魏建民 | Magnetite beneficiation process capable of fully releasing mill capacity |
| CN114939477A (en) * | 2022-06-13 | 2022-08-26 | 太原钢铁(集团)有限公司 | Method for enriching and recovering tailings in magnetic gravity separation micro-fine particles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103418488B (en) | Comprehensive recovery process of lithium polymetallic ore associated with fine niobium and tantalum | |
| CN103041912B (en) | Beneficiation method of low-grade ilmenite | |
| CN102500465B (en) | Benefication method for bastnaesite | |
| CN102909124B (en) | Iron-increasing and silicon-reducing reselection technique for mixed-type lean iron ore tailings | |
| CN104226462B (en) | A kind of difficulty selects the beneficiation method of low-grade scheelite | |
| CN105057089B (en) | A kind of ore-dressing technique of rock type Primary ilmenite | |
| CN101564706B (en) | Coarse fraction ilmenite titanium selecting Technology | |
| CN102728477A (en) | Mineral processing technology for comprehensively recycling iron phosphate from low-grade high phosphorus vanadium titanium magnetite | |
| CN104148163B (en) | A kind of beneficiation method processing low-grade tin-lead-zinc multi-metal oxygen ore deposit | |
| CN106733205A (en) | The Efficient beneficiation method of troilite in lead zinc flotation tailing | |
| CN107694745A (en) | A kind of elutriation magnetic separator tailing treatment technology | |
| CN102580842B (en) | Stage grinding and desliming, gravity separation, magnetic separation and floatation process for extremely poor hematite | |
| CN102962123A (en) | Beneficiation process for low-grade copper-nickel ore | |
| CN102824956B (en) | Poor hematite grading level and narrow level sorting process | |
| CN102553703A (en) | Coal slime treatment process for deslimed dense-medium coal separation | |
| CN107282287A (en) | A kind of recycling water utilization method before copper-molybdenum Xuan Chang factories | |
| CN103934093A (en) | Beneficiation method for improving micro-fine particle refractory iron ore flotation ore-concentrate production rate and recovery rate | |
| CN104888939A (en) | Magnetic separation and gravity separation pre-concentration and rough concentrate regrinding and re-concentration hematite tailing recovery process | |
| CN103721841B (en) | A kind of dressing process of ilmenite | |
| CN108993760B (en) | Weathered low-grade refractory manganese ore sorting process | |
| CN103447147B (en) | Novel low grade hematite ore concentration and water purification process | |
| CN103657836B (en) | A kind of be suitable for the ore dressing of micro fine particle magnetite stone put forward the energy-conservation ore-dressing technique of iron | |
| CN103372495B (en) | A kind of separation of coarse slime system and method for separating | |
| CN205925976U (en) | Improve aurin ore deposit tailing gold recovery's ore grinding ore dressing floatation device | |
| CN105170468B (en) | A kind of recovery method of tungsten concentrate tailings valuable metal element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180216 |
|
| WW01 | Invention patent application withdrawn after publication |