CN108580028A - A kind of red magnetic mixing iron ore chats ore-dressing technique - Google Patents
A kind of red magnetic mixing iron ore chats ore-dressing technique Download PDFInfo
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- CN108580028A CN108580028A CN201810862861.9A CN201810862861A CN108580028A CN 108580028 A CN108580028 A CN 108580028A CN 201810862861 A CN201810862861 A CN 201810862861A CN 108580028 A CN108580028 A CN 108580028A
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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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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Abstract
The present invention relates to a kind of red magnetic mixing iron ore chats ore-dressing technique, including existing red magnetic mixing iron ore beneficiation technique, the tailings of the overflow product and once purging selection spiral chute of a thickness grading cyclone；It is characterized in that：The overflow product of thickness grading cyclone is as magnetic middling ore, the tailing of the once purging selection spiral chute is as gravity treatment chats, processing gravity treatment chats is handled using closed circuit mine thickness grading coarse grain product of regrinding using one thick one single-minded spiral chute re-selection procedure of sweeping, and fine particle product merges with magnetic middling ore；It handles magnetic strength magnetic during magnetic middling ore uses and throws the centrifuge re-selection procedure processing that high intensity magnetic mineral in tail uses thick two essence；It obtains comprehensive recovery and reaches 70%~73%, 20%~23% is improved than existing ore-dressing technique.
Description
Technical field
The invention belongs to iron ore beneficiation technical fields, and in particular to a kind of iron recovery reaches 70% or more red magnetic mixing
Iron ore chats ore-dressing technique.
Background technology
In opencast iron ore mine, especially in the ore body part close to earth's surface and to underground deep transition, by
It is sufficiently complex in the valuable mineral contained in the difference of degree of oxidation and degree of hydration, this part ore body, mainly include bloodstone,
Martite, limonite, goethite and magnetic iron ore.Often the limonite of aquation and goethite content are larger in this kind of ore,
Due to containing the crystallization water in the molecular structure of limonite and goethite, their minal theory Iron grade is not high；In addition, this kind of mine
Stone often contains the lower ferruginous clay of a large amount of grade due to long-term weathering Erosion.Current this kind of mine, many ore dressing plants
The high grade iron concentrate of Iron grade ＞ 62%, this mode tailing are obtained only with one section of closed circuit grinding-magnetic separation-re-selection procedure
Grade is higher, and the rate of recovery of iron is very low in concentrate.This dressing method is limited in that：Since grinding particle size is relatively thick,
The liberation degree of minerals of valuable mineral is not enough, and is merely able to utilize strongly magnetic mineral such as martite and magnet in magnetic separation recovery
Mine；Gravity treatment can only be utilized to recycle coarse grained weak magnetic and nonmagnetic mineral, such as coarse grained bloodstone, limonite and needle iron
Mine.The maximum deficiency of this dressing method is：No matter monomer dissociation whether, particulate weak magnetic and non-magnetic valuable mineral root
Originally it is unable to get recycling, the coarse granule intergrowth of part weak magnetic and non-magnetic valuable mineral is also unable to get effective recycling.
Therefore, in actual production, the iron recovery for mostly using the ore dressing plant that this technological process handles red magnetic mixing iron ore greatly all exists
50% hereinafter, the utilization rate of iron ore deposit is too low.
It is right in order to make full use of the iron ore deposit of similar mines, raising iron recovery to be transformed prior art flow
The fine tailing of which part grade is further sorted recycling valuable mineral, and ore dressing plant iron recovery is effectively improved to reach
Purpose it is necessary；It is also necessary to being recycled using the tailing discarded after this technological process processing.
Invention content
The object of the present invention is to provide the red magnetic mixing iron ore chats ore-dressing techniques that a kind of iron recovery reaches 70% or more.
The purpose of the present invention is what is realized by following technical proposals：
The present invention a kind of red magnetic mixing iron ore chats ore-dressing technique, including by granularity be 10mm-0mm, Iron grade 41%-
43%, the red magnetic mixing iron ore raw ore that ferruginous clay content is 30% or more feeds one section of ball milling and one section of cyclone composition closed circuit
The overflow product of ore grinding, one section of closed circuit grinding feeds weak magnetic separator, and the tailing of weak magnetic separator feeds primary middle magnetomechanical, primary middle magnetic
The tailing of machine feeds the strong magnetomechanical of one roughing, and the tailing of the strong magnetomechanical of one roughing feeds the strong magnetomechanical of once purging selection, and once purging selection is strong
The tailing of magnetomechanical throws tail；The concentrate of weak magnetic separator and the concentrate of primary middle magnetomechanical feed column magnetic separator, the concentrate of column magnetic separator after merging
For magnetic concentrate, grade is 63.0~63.5%, the rate of recovery is 30%~31%, the strong magnetomechanical of tailing, one roughing of column magnetic separator
Concentrate and the concentrate of the strong magnetomechanical of once purging selection feed concentration basin after merging, and the overflow of concentration basin is used as ring water, concentration basin
Underflow feeds a thickness grading cyclone, and as magnetic middling ore, grade is for the overflow of a thickness grading cyclone
41.50%-42.50%, rate of recovery 11.50%-12.50%；The sand setting of thickness grading cyclone feeds one roughing spiral
The concentrate of chute, one roughing spiral chute feeds primary cleaning spiral chute, and the concentrate of primary cleaning spiral chute is primary
Gravity concentrate, grade is 62.5%~63.0%, the rate of recovery is 22%~23%；The tailing of one roughing spiral chute is fed once
Spiral chute is scanned, the concentrate of once purging selection spiral chute and the tailing of primary cleaning spiral chute return to primary thick after merging
Select spiral chute, the tailing of once purging selection spiral chute is as gravity treatment chats, grade 34.50%-35.50%, the rate of recovery
27.50%-28.50%；It is characterized in that：Further include that counterweight chooses mine choosing progress sorting process and magnetic middling ore choosing to carry out sorting work
Skill
Counterweight is chosen mine to be sorted and is as follows：
1）Gravity treatment chats is fed to the secondary closed circuit grinding being made of cyclone and two sections of ball mills, acquisition -0.076mm accounts for 90%
Secondary closed circuit grinding overflow product；Secondary closed circuit grinding overflow product is fed into secondary thickness grading cyclone, is obtained secondary
The sand setting and -0.043mm of thickness grading cyclone account for the overflow of 90% secondary thickness grading cyclone；Secondary thickness grading rotation
Grade after the overflow of the overflow and a thickness grading cyclone of flowing device merges is 37.5%~38.5%, the rate of recovery 26.5%
~27.5% product feeds secondary middle magnetic separation, and the sand setting of secondary thickness grading cyclone is as secondary spiral chute re-selection procedure
Give mine；
2）Secondary spiral chute re-selection procedure using secondary roughing spiral chute, secondary scan spiral chute and recleaning spiral
Chute re-selection procedure
The sand setting of secondary thickness grading cyclone feeds secondary roughing spiral chute and carries out roughing, the tail of secondary roughing spiral chute
Mine feeds secondary spiral chute of scanning and is scanned, and the secondary tailing for scanning spiral chute throws tail；Secondary roughing spiral chute
Concentrate feeds recleaning spiral chute and carries out selected, the tailing of recleaning spiral chute and the secondary essence for scanning spiral chute
Mine returns to secondary roughing spiral chute after merging, the concentrate of recleaning spiral chute is secondary spiral chute re-selection procedure essence
Mine, the present invention choose mine ore grinding, thickness grading, spiral chute gravity treatment to obtain grade as 62.0%-62.30%, return by counterweight
Yield is the secondary re-selection procedure concentrate of 3%-4%,
Column magnetic separator concentrate, primary cleaning spiral chute concentrate and recleaning spiral chute concentrate in present invention process flow close
And be pelletizing Iron concentrate I, grade 63%, the rate of recovery is 55%~58%.
Magnetic middling ore is sorted and is as follows：
1）Secondary middle magnetomechanical, secondary middle magnetomechanical are fed after the fine particle product of magnetic middling ore and secondary thickness grading cyclone is merged
Tailing feed secondary strong magnetomechanical, the tailing of secondary strong magnetomechanical throws tail；The concentrate of the concentrate of secondary middle magnetomechanical and secondary strong magnetomechanical
Merging feeds concentration basin, and the overflow of concentration basin is used as ring water, and the underflow of concentration basin feeds centrifuge re-selection procedure；
2）Centrifuge re-selection procedure uses roughing centrifuge, primary cleaning centrifuge and recleaning centrifuge re-selection procedure
The underflow of concentration basin is fed into roughing centrifuge and carries out roughing, the concentrate of roughing centrifuge feeds primary cleaning centrifuge,
The concentrate of primary cleaning centrifuge feeds recleaning centrifuge and carries out selected again, and the concentrate of recleaning centrifuge is sintering
With Iron concentrate II, grade is 58%~60%, and the rate of recovery is 15%~16%；
The secondary tailing for scanning spiral chute, the tailing of centrifuge re-selection procedure, the tailing of secondary strong magnetomechanical and once purging selection are strong
The tailing of magnetomechanical merges into iron tailings, and grade is 24%~25%, and the rate of recovery is 26%~30%.
The magnetic field intensity of secondary middle magnetomechanical is 3500GS, and the magnetic field intensity of secondary strong magnetomechanical is 8000 GS.
The rotating speed of the centrifuge is 400~600 revs/min.
The valuable mineral that the red magnetic mixing iron ore of the present invention contains is bloodstone, martite, limonite, goethite and magnetic
Iron ore.
It is an advantage of the invention that：
1）The higher magnetic middling ore of grade and gravity treatment chats are isolated from existing procedure, by subsequent ore grinding, thickness grading,
Spiral chute gravity treatment, magnetic separation and centrifuge ore dressing,
It is finally obtained grade 63%, the pelletizing Iron concentrate I of the rate of recovery 55%~58%, it is 58.0% that centrifugation concentrate selection, which constitutes grade,
~60.0%, the sintering Iron concentrate II of the rate of recovery 15%~16%；The rate of recovery of Iron concentrate I is high by 5%~8% relative to existing procedure,
The rate of recovery of comprehensive iron ore concentrate reaches 70%~74%, and 20%~24% is improved relative to existing procedure；Significantly improve synthesis
The rate of recovery of concentrate, improves comprehensive resource utilization rate and economic benefit.
2）Concentrate is divided into the iron ore concentrate I and grade 58%~60% of grade 63% by the technological process of the present invention according to quality
Iron ore concentrate II, I higher price of iron ore concentrate can be used for pellet feed, the relatively low raw material that can be used for being sintered of II price of iron ore concentrate,
This products scheme not only increases integrated marketing income, and has expanded the market adaptability of iron ore concentrate.
3）A thickness grading is newly set before spiral chute re-selection procedure is to mine, coarse grain sand setting feeds spiral chute gravity treatment
Flow, particulate overflow feed magnetic separation, and this structure takes full advantage of spiral chute to good compared with coarse granule mineral sorting index, improves
The quality of gravity concentrate.
4）The technique of the present invention increases spiral chute in re-selection procedure structure in existing procedure and scans, and spiral is slipped
The selected tailing of concentrate and spiral chute that slot is scanned returns to spiral chute roughing, adequately ensure that the recycling of gravity concentrate
Rate.
5）The technique of the present invention is dissociated the intergrowth that part existing procedure does not dissociate by secondary grinding, then
Industry is elected to be by the secondary magnetic separation-centrifugation of secondary gravity treatment-to recycle the mineral after dissociation；Pass through primary and secondary thickness grading
The irretrievable weak magnetic of fine grain gravity treatment and nonmagnetic mineral have been fed into secondary magnetic separation and centrifugation is elected to be industry；It is final to obtain
Grade is 60.0%~58.0%, and the sintering iron ore concentrate II of the rate of recovery 15%~16% substantially increases comprehensive iron recovery, carry
High economic benefit.
Description of the drawings
Fig. 1 is the flow chart of the red magnetic mixing iron ore chats ore-dressing technique of the present invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1：A kind of red magnetic mixing iron ore chats ore-dressing technique of the present invention, handled red magnetic mixing iron ore contain
Some valuable minerals be bloodstone, martite, limonite, goethite and magnetic iron ore, including by granularity be 10mm-0mm, iron
Grade is 41%-43%, and the red magnetic mixing iron ore raw ore that ferruginous clay content is 30% or more feeds one section of ball milling and cyclone composition
One section of closed circuit grinding, the overflow product of one section of closed circuit grinding feeds weak magnetic separator, the tailing of weak magnetic separator feed it is primary in magnetic
The tailing of machine, primary middle magnetomechanical feeds the strong magnetomechanical of one roughing, and the tailing of the strong magnetomechanical of one roughing feeds the strong magnetomechanical of once purging selection,
The tailing of the strong magnetomechanical of once purging selection throws tail；The concentrate of weak magnetic separator and the concentrate of primary middle magnetomechanical feed column magnetic separator, magnetic after merging
It is magnetic concentrate to select the concentrate of column, and grade is 63.0~63.5%, the rate of recovery is 30%~31%, the tailing of column magnetic separator, primary thick
The concentrate of the concentrate and the strong magnetomechanical of once purging selection that select strong magnetomechanical feeds concentration basin after merging, and the overflow of concentration basin makes as ring water
Feed a thickness grading cyclone with the underflow of, concentration basin, the overflow of a thickness grading cyclone as magnetic middling ore,
Grade is 41.50%-42.50%, rate of recovery 11.50%-12.50%；The sand setting of thickness grading cyclone feeds primary thick
Spiral chute, the concentrate of one roughing spiral chute is selected to feed primary cleaning spiral chute, the concentrate of primary cleaning spiral chute
For a gravity concentrate, grade is 62.5%~63.0%, the rate of recovery is 22%~23%；The tailing of one roughing spiral chute is given
Enter once purging selection spiral chute, the concentrate of once purging selection spiral chute and the tailing of primary cleaning spiral chute return to after merging
One roughing spiral chute, as gravity treatment chats, grade 34.50%-35.50% is returned the tailing of once purging selection spiral chute
Yield is 27.50%-28.50%；It is characterized in that：Further include that counterweight chooses mine choosing to carry out sorting process and magnetic middling ore choosing progress
Sorting process,
Counterweight is chosen mine to be sorted and is as follows：
1）Gravity treatment chats is fed to the secondary closed circuit grinding being made of cyclone and two sections of ball mills, acquisition -0.076mm accounts for 90%
Secondary closed circuit grinding overflow product；Secondary closed circuit grinding overflow product is fed into secondary thickness grading cyclone, is obtained secondary
The sand setting and -0.043mm of thickness grading cyclone account for the overflow of 90% secondary thickness grading cyclone；Secondary thickness grading rotation
Grade after the overflow of the overflow and a thickness grading cyclone of flowing device merges is 37.5%~38.5%, the rate of recovery 26.5%
~27.5% product feeds secondary middle magnetic separation, and the sand setting of secondary thickness grading cyclone is as secondary spiral chute re-selection procedure
Give mine；
2）Secondary spiral chute re-selection procedure using secondary roughing spiral chute, secondary scan spiral chute and recleaning spiral
Chute re-selection procedure
The sand setting of secondary thickness grading cyclone feeds secondary roughing spiral chute and carries out roughing, the tail of secondary roughing spiral chute
Mine feeds secondary spiral chute of scanning and is scanned, and the secondary tailing for scanning spiral chute throws tail；Secondary roughing spiral chute
Concentrate feeds recleaning spiral chute and carries out selected, the tailing of recleaning spiral chute and the secondary essence for scanning spiral chute
Mine returns to secondary roughing spiral chute after merging, the concentrate of recleaning spiral chute is secondary spiral chute re-selection procedure essence
Mine, grade 62.0%-62.30%, rate of recovery 3%-4%,
Column magnetic separator concentrate, primary cleaning spiral chute concentrate and recleaning spiral chute concentrate merge into pelletizing Iron concentrate I,
Its grade is 63%, and the rate of recovery is 55%~58%；Due to being selected gravity treatment chats again, it is effectively improved the product of Iron concentrate I
Position.
The present invention sorts magnetic middling ore and is as follows：
1）Secondary middle magnetomechanical, secondary middle magnetomechanical are fed after the fine particle product of magnetic middling ore and secondary thickness grading cyclone is merged
Tailing feed secondary strong magnetomechanical, the tailing of secondary strong magnetomechanical throws tail；The concentrate of the concentrate of secondary middle magnetomechanical and secondary strong magnetomechanical
Merging feeds concentration basin, and the overflow of concentration basin is used as ring water, and the underflow of concentration basin feeds centrifuge re-selection procedure；In secondary
The magnetic field intensity of magnetomechanical is 3500GS, and the magnetic field intensity of secondary strong magnetomechanical is 8000GS.
2）Centrifuge re-selection procedure uses roughing centrifuge, primary cleaning centrifuge and recleaning centrifuge re-selection procedure
The underflow of concentration basin is fed into roughing centrifuge and carries out roughing, the concentrate of roughing centrifuge feeds primary cleaning centrifuge,
The concentrate of primary cleaning centrifuge feeds recleaning centrifuge and carries out selected again, and the concentrate of recleaning centrifuge is sintering
With Iron concentrate II, grade is 58%~60%, and the rate of recovery is 15%~16%；The rotating speed of the centrifuge be 400~600 turns/
Point,
The secondary tailing for scanning spiral chute, the tailing of centrifuge re-selection procedure, the tailing of secondary strong magnetomechanical and once purging selection are strong
The tailing of magnetomechanical merges into iron tailings, and grade is 24%~25%, and the rate of recovery is 26%~30%.It is by secondary grinding that part is existing
There is the intergrowth that flow does not dissociate to be dissociated, after being then elected to be industry to dissociation by the secondary magnetic separation-centrifugation of secondary gravity treatment-
Mineral are recycled；By primary and secondary thickness grading by the irretrievable weak magnetic of fine grain gravity treatment and nonmagnetic mineral
It has fed secondary magnetic separation and centrifugation is elected to be industry；It is 60.0%~58.0% to be finally obtained grade, the sintering of the rate of recovery 15%~16%
With iron ore concentrate II, comprehensive iron recovery is substantially increased, economic benefit is improved.
Claims (4)
1. a kind of red magnetic mixing iron ore chats ore-dressing technique, including by granularity it is 10mm-0mm, Iron grade 41%-43%, iron content
The red magnetic mixing iron ore raw ore that clay content is 30% or more feeds one section of closed circuit grinding that one section of ball milling and cyclone form, and one
The overflow product of section closed circuit grinding feeds weak magnetic separator, and the tailing of weak magnetic separator feeds primary middle magnetomechanical, the tail of primary middle magnetomechanical
Mine feeds the strong magnetomechanical of one roughing, and the tailing of the strong magnetomechanical of one roughing feeds the strong magnetomechanical of once purging selection, the strong magnetomechanical of once purging selection
Tailing throws tail；The concentrate of weak magnetic separator and the concentrate of primary middle magnetomechanical feed column magnetic separator after merging, the concentrate of column magnetic separator is magnetic separation
Concentrate, grade is 63.0~63.5%, the rate of recovery is 30%~31%, the concentrate of the strong magnetomechanical of tailing, one roughing of column magnetic separator and
The concentrate of the strong magnetomechanical of once purging selection feeds concentration basin after merging, and the overflow of concentration basin is used as ring water, and the underflow of concentration basin is given
Enter a thickness grading cyclone, the overflow of a thickness grading cyclone is as magnetic middling ore, grade 41.50%-
42.50%, rate of recovery 11.50%-12.50%；The sand setting of thickness grading cyclone feeds one roughing spiral chute, and one
The concentrate of secondary roughing spiral chute feeds primary cleaning spiral chute, and the concentrate of primary cleaning spiral chute is a gravity treatment essence
Mine, grade is 62.5%~63.0%, the rate of recovery is 22%~23%；The tailing of one roughing spiral chute feeds once purging selection spiral shell
Chute is revolved, the concentrate of once purging selection spiral chute and the tailing of primary cleaning spiral chute return to one roughing spiral after merging
Chute, the tailing of once purging selection spiral chute is as gravity treatment chats, grade 34.50%-35.50%, rate of recovery 27.50%-
28.50%；It is characterized in that：Further include that counterweight chooses mine choosing to carry out sorting process and magnetic middling ore choosing progress sorting process,
Counterweight is chosen mine to be sorted and is as follows：
1）Gravity treatment chats is fed to the secondary closed circuit grinding being made of cyclone and two sections of ball mills, acquisition -0.076mm accounts for 90%
Secondary closed circuit grinding overflow product；Secondary closed circuit grinding overflow product is fed into secondary thickness grading cyclone, is obtained secondary
The sand setting and -0.043mm of thickness grading cyclone account for the overflow of 90% secondary thickness grading cyclone；Secondary thickness grading rotation
Grade after the overflow of the overflow and a thickness grading cyclone of flowing device merges is 37.5%~38.5%, the rate of recovery 26.5%
~27.5% product feeds secondary middle magnetic separation, and the sand setting of secondary thickness grading cyclone is as secondary spiral chute re-selection procedure
Give mine；
2）Secondary spiral chute re-selection procedure using secondary roughing spiral chute, secondary scan spiral chute and recleaning spiral
Chute re-selection procedure
The sand setting of secondary thickness grading cyclone feeds secondary roughing spiral chute and carries out roughing, the tail of secondary roughing spiral chute
Mine feeds secondary spiral chute of scanning and is scanned, and the secondary tailing for scanning spiral chute throws tail；Secondary roughing spiral chute
Concentrate feeds recleaning spiral chute and carries out selected, the tailing of recleaning spiral chute and the secondary essence for scanning spiral chute
Mine returns to secondary roughing spiral chute after merging, the concentrate of recleaning spiral chute is secondary spiral chute re-selection procedure essence
Mine, grade 62.0%-62.30%, rate of recovery 3%-4%,
Column magnetic separator concentrate, primary cleaning spiral chute concentrate and recleaning spiral chute concentrate merge into pelletizing Iron concentrate I,
Its grade is 63%, and the rate of recovery is 55%~58%；
Magnetic middling ore is sorted and is as follows：
1）Secondary middle magnetomechanical, secondary middle magnetomechanical are fed after the fine particle product of magnetic middling ore and secondary thickness grading cyclone is merged
Tailing feed secondary strong magnetomechanical, the tailing of secondary strong magnetomechanical throws tail；The concentrate of the concentrate of secondary middle magnetomechanical and secondary strong magnetomechanical
Merging feeds concentration basin, and the overflow of concentration basin is used as ring water, and the underflow of concentration basin feeds centrifuge re-selection procedure；
2）Centrifuge re-selection procedure uses roughing centrifuge, primary cleaning centrifuge and recleaning centrifuge re-selection procedure
The underflow of concentration basin is fed into roughing centrifuge and carries out roughing, the concentrate of roughing centrifuge feeds primary cleaning centrifuge,
The concentrate of primary cleaning centrifuge feeds recleaning centrifuge and carries out selected again, and the concentrate of recleaning centrifuge is sintering
With Iron concentrate II, grade is 58%~60%, and the rate of recovery is 15%~16%；
The secondary tailing for scanning spiral chute, the tailing of centrifuge re-selection procedure, the tailing of secondary strong magnetomechanical and once purging selection are strong
The tailing of magnetomechanical merges into iron tailings, and grade is 24%~25%, and the rate of recovery is 26%~30%.
2. red magnetic mixing iron ore chats ore-dressing technique according to claim 1, it is characterised in that the secondary middle magnetomechanical
Magnetic field intensity be 3500GS, the magnetic field intensity of secondary strong magnetomechanical is 8000 GS.
3. red magnetic mixing iron ore chats ore-dressing technique according to claim 1, it is characterised in that the centrifuge turns
Speed is 400~600 revs/min.
4. red magnetic mixing iron ore chats ore-dressing technique according to claim 1, it is characterised in that red magnetic mixing iron ore contains
Valuable mineral be bloodstone, martite, limonite, goethite and magnetic iron ore.
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Cited By (5)
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| CN109550587A (en) * | 2019-01-24 | 2019-04-02 | 魏建民 | The red composite ore ore-dressing technique of magnetic |
| CN111644265A (en) * | 2020-05-11 | 2020-09-11 | 金建工程设计有限公司 | Process for recycling sericite from gold tailings |
| CN113042195A (en) * | 2021-03-19 | 2021-06-29 | 鞍钢集团北京研究院有限公司 | Ore dressing process of hematite through coarse-fine classification-gravity-magnetic-reverse flotation |
| CN113042194A (en) * | 2021-03-19 | 2021-06-29 | 鞍钢集团北京研究院有限公司 | Mineral separation process for hematite |
| CN113333158A (en) * | 2021-04-26 | 2021-09-03 | 安徽金日晟矿业有限责任公司 | Flotation-free mineral separation and recovery process for mixed iron ore |
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| CN101927209A (en) * | 2009-06-24 | 2010-12-29 | 鞍钢集团矿业公司 | Benefication technology of extra poor hematite |
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| CN106423534A (en) * | 2016-10-14 | 2017-02-22 | 鞍钢集团矿业有限公司 | Poor hematite high pressure roller milling, thickness grading and reselection-magnetic separation-centrifugal machine sorting process |
| CN107096638A (en) * | 2017-06-16 | 2017-08-29 | 鞍钢集团矿业有限公司 | A kind of iron ore composite ore point mill, sorting, magnetic-gravity separation technique |
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| CN111644265A (en) * | 2020-05-11 | 2020-09-11 | 金建工程设计有限公司 | Process for recycling sericite from gold tailings |
| CN113042195A (en) * | 2021-03-19 | 2021-06-29 | 鞍钢集团北京研究院有限公司 | Ore dressing process of hematite through coarse-fine classification-gravity-magnetic-reverse flotation |
| CN113042194A (en) * | 2021-03-19 | 2021-06-29 | 鞍钢集团北京研究院有限公司 | Mineral separation process for hematite |
| CN113333158A (en) * | 2021-04-26 | 2021-09-03 | 安徽金日晟矿业有限责任公司 | Flotation-free mineral separation and recovery process for mixed iron ore |
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