CN108970803A - A kind of floating process integration of the magnetic-weight-sorting the hematite containing ferric carbonate - Google Patents
A kind of floating process integration of the magnetic-weight-sorting the hematite containing ferric carbonate Download PDFInfo
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- CN108970803A CN108970803A CN201811098751.6A CN201811098751A CN108970803A CN 108970803 A CN108970803 A CN 108970803A CN 201811098751 A CN201811098751 A CN 201811098751A CN 108970803 A CN108970803 A CN 108970803A
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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 the magnetic-weights-for sorting the hematite containing ferric carbonate to float process integration, one section of closed circuit grinding operation is fed including the iron ore by bloodstone distributive law higher than 40%, it is characterised in that: further includes the strong magnetic operation of one section of weak magnetic, thickness grading operation, reselection operation, secondary grading grinding operation, the strong magnetic operation of two sections of weak magnetics and reverse flotation work；The strong magnetic operation processing scalping overflow product of one section of weak magnetic and middling ore regrinding product, the thickness grading operation handles the strong magnetic bulk concentrate of one section of weak magnetic, the coarse grain product of the reselection operation processing thickness grading operation, the secondary grading grinding operation handles reselection operation tailing, the fine particle product of the strong magnetic operation processing thickness grading operation of two sections of weak magnetics, the reverse flotation work handles the strong magnetic bulk concentrate of two sections of weak magnetics, and the centrifuge is elected to be industry processing reverse flotation work chats.The invention has the advantages that reducing middling cycle amount, simplification of flowsheet, saving production cost.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of magnetic-weight-for sorting the hematite containing ferric carbonate is floating
Process integration.
Background technique
The dressing plant of processing lean hematite containing ferric carbonate mostly uses " coarse and fine separation-weight, magnetic, floating process integration " or adopts at present
It is sorted with " the strong magnetic-floatation process of stage grinding, weak magnetic-", wherein flotation uses stepped-flotation separation.Wherein " coarse and fine separation-
Weight, magnetic, floating process integration " is the closed circuit grinding system that raw ore feeds an ore grinding after crushing and scalping is constituted, once
Overflow product granularity be -200 mesh contents 55%~60%, primary overflow product after thickness grading cyclone, thickness grading it is thick
Granule product is sorted through two sections of spiral chutes, obtains gravity concentrate, and spiral chute tailing is swept middle magnetic and throws tail, the middling ore regrinding of acquisition
Thickness grading cyclone is returned afterwards, and regrinding product granularity is -200 mesh contents 75%~80%；The fine particle product of thickness grading is fed
Weak magnetic machine, weak magnetic tail feed strong magnetomechanical and are sorted, and the mixed magnetic essence that weak magnetic essence and strong magnetic essence are constituted first uses direct reverse flotation technique
Carbonic acid iron content is reduced, then is sorted using reverse floatation process, the flotation concentrate and gravity concentrate of acquisition constitute comprehensive concentrate,
Flotation tailing and strong magnetic tail mine sweep middle magnetic tail mine and constitute comprehensive tailing, and the technique existing greatest problem in the application, is when original
When mine property fluctuates, increases chats amount to ensure the grade of comprehensive concentrate and comprehensive tailing, after causing middling ore regrinding, regrind production
Product granularity is thicker, and chats amount further increases after middling recurrence, forms vicious circle and the chats amount of factory is respectively selected gradually to increase mostly
Add, it is some to reach 200% or more when selecting factory's maximum generally 100%~150%, considerably increase the production cost for selecting factory." the stage
Strong magnetic-the floatation process of ore grinding, weak magnetic-" is the closed circuit grinding system that raw ore feeds an ore grinding after crushing and scalping is constituted
System, primary overflow product granularity are -200 60% or more mesh contents, and primary overflow product feeds one section of weak magnetic machine, one section of weak magnetic tail
It feeds one section strong magnetomechanical to be sorted, the mixed magnetic essence that a weak magnetic essence and the last one magnetic essence are constituted feeds two sections of closed circuit grinding classifications and makees
Industry, secondary grinding graded operation product feed two sections of weak magnetic machines, and two sections of weak magnetic tails feed two sections strong magnetomechanical and sorted, two weak magnetics
Essence and the last two magnetic essence constitute two mixed magnetic essences first use direct reverse flotation technique reduce carbonic acid iron content, then using reverse floatation process into
Capable to sort, the flotation concentrate and gravity concentrate of acquisition constitute comprehensive concentrate, and flotation tailing and strong magnetic tail mine sweep middle magnetic tail mine composition
Comprehensive tailing, existing greatest problem is that flotation operation treating capacity is larger to the technique in the application, and production cost is higher.Both
Technique is common the problem is that floatation process is complicated, and flotation will carry out respectively foam and underflow after direct flotation to mine
Reverse flotation needs 8 sections of flotation operations, while flotation operation higher cost altogether, in addition when floating to the fluctuation of middle carbonic acid iron content, flotation
Operation is unstable, considerably increases the production cost for selecting factory.
Summary of the invention
Latter section strong magnetic, which is roughly ground, the object of the present invention is to provide a kind of reinforcing throws tail, reduction middling cycle amount, simplified technique
Process, the magnetic-weight-for sorting the hematite containing ferric carbonate for saving production cost float process integration.
The present invention is implemented as follows:
A kind of magnetic-weight-sorting the hematite containing ferric carbonate of the invention floats process integration, including will be red based on bloodstone
Iron ore distributive law is higher than iron ore of 40%, the ferric carbonate distributive law higher than 10% and feeds one section of closed circuit grinding operation, obtains primary point
Grade overflow product, it is characterised in that: further include the strong magnetic operation of one section of weak magnetic, thickness grading operation, reselection operation, secondary grading mill
Mine operation, the strong magnetic operation reverse flotation work of two sections of weak magnetics and centrifugation machine operation；The strong magnetic operation processing of one section of weak magnetic is primary
Grading Overflow product and middling ore regrinding product, the thickness grading operation handles the strong magnetic bulk concentrate of one section of weak magnetic, described
Reselection operation handles the coarse grain product of thickness grading operation, and the secondary grading grinding operation handles reselection operation tailing, institute
The fine particle product of the strong magnetic operation processing thickness grading operation of the two sections of weak magnetics stated, it is strong that the reverse flotation work handles two sections of weak magnetics
Magnetic mixing essence
Mine, the centrifugation machine operation handle reverse flotation work chats product.
The scalping overflow product is that -200 mesh contents account for 65%~70%.
The strong magnetic operation of one section of weak magnetic includes one section of weak magnetic and one section of strong magnetic, and scalping overflow product and chats are again
Mill product feeds one section of weak magnetic, and one section of weakly magnetic tailings feeds one section of strong magnetic, and the one section strong magnetic tail mine that yield is 40%~60% throws tail,
One section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral merge into the strong magnetic bulk concentrate of one section of weak magnetic.
The thickness grading operation uses cyclone group, and the strong magnetic bulk concentrate of one section of weak magnetic feeds cyclone group and obtains slightly
The coarse grain product of subfractionation operation and the fine particle product of thickness grading operation.
The reselection operation includes roughing spiral chute and selected spiral chute, and the coarse grain product of thickness grading operation is given
Enter roughing spiral chute to sort, roughing spiral chute concentrate feeds selected spiral chute, and selected spiral chute concentrate is gravity treatment essence
Mine, selected spiral chute chats self-loopa, selected spiral chute tailing and roughing spiral chute tailing merge into gravity tailings, weight
Select tailing as chats, chats amount is the 70%~120% of raw ore amount.
The secondary grading grinding operation is the open-circuit grinding of secondary grading and secondary grinding composition, reselection operation tailing
It feeds secondary grading grinding operation as chats to carry out secondary grading and regrind, secondary grading overflow product and secondary grinding ore discharge
The middling ore regrinding product that granularity is -200 mesh contents 75%~80% is merged into, middling ore regrinding product returns to the strong magnetic of one section of weak magnetic and makees
Industry.
The strong magnetic operation of two sections of weak magnetics includes that two sections of weak magnetics and two sections of strong magnetic, the fine particle product of thickness grading operation are given
Enter two sections of weak magnetics, two sections of weakly magnetic tailings feed two sections of strong magnetic, and two sections strong magnetic tail mine throws tail, two sections of inferior fine magnetite concentrates and two sections strong magnetic essence
Mine merges into the strong magnetic bulk concentrate of two sections of weak magnetics.
The reverse flotation work is the reverse flotation flowsheet of a thick essence, and the strong magnetic bulk concentrate of two sections of weak magnetics feeds reverse flotation
Roughing operation is sorted, and obtains coarse-fine and thick tail, coarse-fine to feed the selected operation of reverse flotation and sorted, obtain flotation concentrate with
Smart tail, smart tail return to reverse flotation roughing operation, and thick tail is reverse flotation work tailing.
It is the one thick one single-minded closed circuit Beneficiation flowsheet swept that the centrifuge, which is elected to be industry, and flotation tailing feeds roughing centrifuge
Sort, roughing centrifuge concentrate feeds selected centrifuge and sorts, and obtains centrifuge concentrate and smart from tail, it is smart from tail return roughing from
Scheming, roughing centrifuge tailing, which is fed, to be scanned centrifuge and is sorted, and centrifuge concentrate and centrifuge tailing are scanned in acquisition, is scanned
Centrifuge concentrate returns to roughing centrifuge.
Centrifuge concentrate, flotation concentrate and gravity concentrate merge into comprehensive concentrate, comprehensive 67% or more concentrate grade, centrifugation
Tail mine and one section strong magnetic tail mine, two sections strong magnetic tail mine merge into comprehensive tailing, comprehensive tailings grade 7%~10%.
The invention has the advantages that
1) present invention is provided with the strong magnetic operation of one section of weak magnetic after one section of closed circuit grinding operation, rather than thickness grading is arranged and makees
Industry enhances the one section strong magnetic discarding coarse tailing to scalping overflow product；
2) it as middling ore regrinding product back to the strong magnetic operation of one section of weak magnetic after the present invention regrinds gravity tailings, rather than returns
To thickness grading operation, the one section strong magnetic for enhancing middling ore regrinding product throws tail, throws tail amount 45%~55%, reduces subsequent ore grinding choosing
The treating capacity of other operation reduces chats amount 20%~30%, mitigates influence of the ore properties fluctuation to chats, is conducive to production and stablizes,
Save production cost；
3) magnetic concentrate uses thickness grading, and coarse component is sorted using gravity treatment, and gravity treatment chats, which returns, is added to one section of weak magnetic, can reduce
Flotation operation and centrifugation machine operation treating capacity；
4) flotation tailing is sorted using centrifuge, reduces 1~2 percentage point of true tailings grade, while by carbonic acid iron content
Relatively high flotation tailing is sorted using centrifuge, is essentially eliminated influence of the ferric carbonate to flotation, has been simplified floatation process, made
Process flow operation is stablized, production cost saving.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of magnetic-weight-for sorting the hematite containing ferric carbonate of the invention floats process integration, including will be with
Based on bloodstone, bloodstone distributive law 41.58%, grade 29.14% iron ore feed one section of closed circuit grinding operation, obtain granularity
For the scalping overflow product of -200 mesh contents 65.5%, it is characterised in that further include following operations:
1) the strong magnetic operation of one section of weak magnetic: the strong magnetic operation of one section of weak magnetic is made of one section of weak magnetic and one section strong magnetic, scalping overflow
Product and middling ore regrinding product feed one section of weak magnetic, and one section of weakly magnetic tailings feeds one section of strong magnetic, and grade 6.38%, yield are
The strong magnetic tail mine of one section of 50.50% throws tail, and one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral merge into the strong magnetic mixing essence of one section of weak magnetic
Mine；
2) thickness grading operation: thickness grading operation uses cyclone group, and the strong magnetic bulk concentrate of one section of weak magnetic feeds cyclone group
Obtain the coarse grain product of thickness grading operation and the fine particle product of thickness grading operation；
3) reselection operation: reselection operation is made of roughing spiral chute and selected spiral chute, and the coarse grain of thickness grading operation produces
Product feed roughing spiral chute and sort, and roughing spiral chute concentrate feeds selected spiral chute, and selected spiral chute concentrate is attached most importance to
Concentrate selection, gravity concentrate grade 67.80%, selected spiral chute chats self-loopa, selected spiral chute tailing and roughing spiral are slipped
Slot tailing merges into gravity tailings, and for gravity tailings as chats, chats amount is the 105% of raw ore amount；
4), secondary grading grinding operation: the open-circuit grinding that secondary grading grinding operation is made of secondary grading and secondary grinding
System, reselection operation tailing feed secondary grading grinding operation as chats and carry out secondary grading and regrind, secondary grading overflow
Product and secondary grinding ore discharge merge into the middling ore regrinding product that granularity is -200 mesh contents 79.05%, and middling ore regrinding product returns
The strong magnetic operation of one section of weak magnetic；
5) the strong magnetic operation of two sections of weak magnetics: the strong magnetic operation of two sections of weak magnetics includes two sections of weak magnetics and two sections of strong magnetic, thickness grading operation
Fine particle product feeds two sections of weak magnetics, and two sections of weakly magnetic tailings feed two sections of strong magnetic, and the two sections strong magnetic tail mine that grade is 12.18% throws tail,
Two sections of inferior fine magnetite concentrates and two sections of high intensity magnetic minerals merge into the strong magnetic bulk concentrate of two sections of weak magnetics；
6) reverse flotation work: reverse flotation work is the reverse flotation flowsheet of a thick essence, and the strong magnetic bulk concentrate of two sections of weak magnetics is fed instead
Roughing flotation operation is sorted, and obtains coarse-fine and thick tail, coarse-fine to feed the selected operation of reverse flotation and sorted, and it is smart to obtain flotation
Mine and smart tail, Floatation Concentrate Grade 67.82%, smart tail return to reverse flotation roughing operation, and thick tail is reverse flotation work tailing, flotation
Tailing feeds centrifugation machine operation；
7) be centrifuged machine operation: it is the one thick one single-minded closed circuit Beneficiation flowsheet swept that centrifugation machine operation, which is elected to be industry, and flotation tailing is fed slightly
Centrifuge is selected to sort, roughing centrifuge concentrate feeds selected centrifuge and sorts, and obtains centrifuge concentrate and smart from tail, smart to return from tail
Roughing centrifuge is returned, roughing centrifuge tailing, which is fed, to be scanned centrifuge and sorted, and centrifuge concentrate and centrifuge are scanned in acquisition
Tailing scans centrifuge concentrate and returns to roughing centrifuge, centrifuge concentrate grade 65.63%, centrifuge concentrate and flotation concentrate,
Gravity concentrate merges into comprehensive concentrate, comprehensive concentrate grade 67.31%, centrifuge tailings grade 17.93%, centrifuge tailing and one
The strong magnetic tail mine of section, two sections strong magnetic tail mine merge into comprehensive tailing, comprehensive tailings grade 8.63%.
Claims (9)
1. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate floats process integration, including bloodstone distributive law is higher than 40%
Iron ore feeds one section of closed circuit grinding operation, obtains scalping overflow product, it is characterised in that: further include one section of strong magnetic of weak magnetic
Operation, thickness grading operation, reselection operation, secondary grading grinding operation, the strong magnetic operation of two sections of weak magnetics and reverse flotation work；It is described
One section of weak magnetic strong magnetic operation processing scalping overflow product and middling ore regrinding product, the thickness grading operation processing one
The section strong magnetic bulk concentrate of weak magnetic, the coarse grain product of the reselection operation processing thickness grading operation, the secondary grading mill
Mine operation handles reselection operation tailing, and the fine particle product of the strong magnetic operation processing thickness grading operation of two sections of weak magnetics is described
Reverse flotation work handle the strong magnetic bulk concentrate of two sections of weak magnetics, the centrifuge be elected to be industry processing reverse flotation work chats.
2. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
It is that -200 mesh contents account for 65%~70% in the scalping overflow product.
3. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
Include one section of weak magnetic and one section of strong magnetic, scalping overflow product and middling ore regrinding product in the strong magnetic operation of one section of weak magnetic
One section of weak magnetic is fed, one section of weakly magnetic tailings feeds one section of strong magnetic, and the one section strong magnetic tail mine that yield is 40%~60% throws tail, and one section weak
Magnetic concentrate and one section of high intensity magnetic mineral merge into the strong magnetic bulk concentrate of one section of weak magnetic.
4. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
Cyclone group is used in the thickness grading operation, the strong magnetic bulk concentrate of one section of weak magnetic feeds cyclone group and obtains thickness grading
The coarse grain product of operation and the fine particle product of thickness grading operation.
5. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
It include roughing spiral chute and selected spiral chute in the reselection operation, the coarse grain product of thickness grading operation feeds roughing
Spiral chute sorts, and roughing spiral chute concentrate feeds selected spiral chute, and selected spiral chute concentrate is gravity concentrate, selected
Spiral chute chats self-loopa, selected spiral chute tailing and roughing spiral chute tailing merge into gravity tailings, gravity tailings
As chats, chats amount is the 70%~120% of one section of closed circuit grinding operation mine-supplying quantity.
6. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
In the open-circuit grinding that the secondary grading grinding operation is secondary grading and secondary grinding composition, reselection operation tailing conduct
Mine feeds secondary grading grinding operation and carries out secondary grading and regrind, and secondary grading overflow product is merged into secondary grinding ore discharge
Granularity is the middling ore regrinding product of -200 mesh contents 75%~80%, and middling ore regrinding product returns to the strong magnetic operation of one section of weak magnetic.
7. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
It include that two sections of weak magnetics and two sections of strong magnetic, the fine particle product of thickness grading operation feed two sections in the strong magnetic operation of two sections of weak magnetics
Weak magnetic, two sections of weakly magnetic tailings feed two sections of strong magnetic, and two sections strong magnetic tail mine throws tail, and two sections of inferior fine magnetite concentrates and two sections of high intensity magnetic minerals merge
For the strong magnetic bulk concentrate of two sections of weak magnetics.
8. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
In the reverse flotation flowsheet that the reverse flotation work is a thick essence, the strong magnetic bulk concentrate of two sections of weak magnetics feeds reverse flotation
Roughing operation is sorted, and obtains coarse-fine and thick tail, coarse-fine to feed the selected operation of reverse flotation and sorted, obtain flotation concentrate with
Smart tail, smart tail return to reverse flotation roughing operation, and thick tail is reverse flotation tailing.
9. a kind of magnetic-weight-for sorting the hematite containing ferric carbonate according to claim 1 floats process integration, feature exists
Being elected to be industry in the centrifuge is the one thick one single-minded closed circuit Beneficiation flowsheet swept, and flotation tailing feeds roughing centrifuge and sorts,
Roughing centrifuge concentrate feeds selected centrifuge and sorts, and obtains centrifuge concentrate and smart from tail, smart from tail return roughing centrifuge,
Roughing centrifuge tailing, which is fed, to be scanned centrifuge and is sorted, and centrifuge concentrate and centrifuge tailing are scanned in acquisition, scans centrifugation
Machine concentrate returns to roughing centrifuge,
Centrifuge concentrate, flotation concentrate and gravity concentrate merge into comprehensive concentrate, and comprehensive 67% or more concentrate grade is centrifuged tail
Mine and one section strong magnetic tail mine, two sections strong magnetic tail mine merge into comprehensive tailing, comprehensive tailings grade 7%~10%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098751.6A CN108970803A (en) | 2018-09-20 | 2018-09-20 | A kind of floating process integration of the magnetic-weight-sorting the hematite containing ferric carbonate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811098751.6A CN108970803A (en) | 2018-09-20 | 2018-09-20 | A kind of floating process integration of the magnetic-weight-sorting the hematite containing ferric carbonate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588431A (en) * | 2020-12-08 | 2021-04-02 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-gravity separation-reverse flotation process for magnetic hematite |
| 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 |
| CN115921128A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-coarse grain gravity separation regrinding and fine grain reverse flotation process |
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| US5334364A (en) * | 1991-05-28 | 1994-08-02 | Materias Primas Monterrey, S.A. De C.V. | Process for purifying silica sand |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115921128A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-coarse grain gravity separation regrinding and fine grain reverse flotation process |
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Application publication date: 20181211 |
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