CN107029868A - A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic - Google Patents
A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic Download PDFInfo
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- CN107029868A CN107029868A CN201710457122.7A CN201710457122A CN107029868A CN 107029868 A CN107029868 A CN 107029868A CN 201710457122 A CN201710457122 A CN 201710457122A CN 107029868 A CN107029868 A CN 107029868A
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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 composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic, it is characterised in that comprise the following steps：Raw ore through it is thick broken, in break that two sections broken and screening after, product granularity reaches 25mm contents more than 90%, then feeds that " high nip roll mill-air classification system obtains the product that granularity is 200 mesh 60%~65%；One section of weak magnetic machine is fed again and one section strong magnetic is sorted, one section of weak magnetic concentrate selection and one section strong magnetic ore deposit are fed tower grinding machine and be milled to the product of 325 mesh more than 90%, its product feeds two sections of weak magnetic machines, three sections of weak magnetic machines, one section of magnetic and shaken ore separators and anion reverse floatation operation, obtain the concentrate that grade is 67%~67.5%, one section strong magnetic tail ore deposit, two sections of weakly magnetic tailingses, three sections of weakly magnetic tailingses, two sections strong magnetic tail ore deposit and one section of magnetic the ore separators mine tailing that shakes are combined into true tailings.The present invention reduces thin broken operation and two stage grinding operation, dusting cover operation is eliminated, flowage structure is simplified, realizes that double media, short route are sorted, reduces beneficiation cost.
Description
Technical field
The invention belongs to technical field of beneficiation, more particularly to a kind of composite ore high pressure roller mill, double media, magnetic-Chi Kuang sortings
Technique.
Background technology
Composite ore is magnetic iron ore and the ore of bloodstone composite feed, and iron ore composite ore typically uses " stage grinding, tower
Mill-weak magnetic-strong magnetic-reverse flotation " technological process is sorted.Raw ore is by primary grinding, the closed circuit grinding of scalping formation
Afterwards, scalping overflow granularity reaches -200 mesh contents 55~60%, is sorted through one section of weak magnetic separator, weakly magnetic tailingses feed one section
Intensity magnetic separator is sorted, jettisoning part coarse grain qualified tailings；One section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral one section of mixed magnetic concentrate of formation
The secondary closed circuit grinding that secondary grading cyclone is constituted with tower grinding machine is fed, secondary grading overflow granularity reaches -325 mesh contents
90%~95%, secondary grading overflow product feeds two sections of weak magnetics, two sections strong magnetomechanical and sorted, two sections strong magnetomechanical jettisoning part particulate
Qualified tailings；Two sections of inferior fine magnetite concentrates and two sections of high intensity magnetic mineral two sections of mixed magnetic concentrate of formation feed anion reverse floatation operation, pass through
One section of roughing, one section it is selected, three sections scan operation, the flotation concentrate of acquisition is final concentrate, grade 66%~66.5%；One section
Strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and reverse flotation mine tailing are combined into most mine tailing, grade 12.5%~14%.As shown in Figure 1.
Composite ore is using in " stage grinding, the strong magnetic-reverse flotation of tower mill-weak magnetic-" technique Beneficiation flowsheet, and raw ore is through one section
After ore grinding, sorted using one section of weak magnetic machine, obtain one section of inferior fine magnetite concentrate, this part concentrate is magnetic ore deposit；One section of weakly magnetic tailingses warp
Cross after one section strong magnetomechanical sorts, one section of high intensity magnetic mineral of acquisition, one section of high intensity magnetic mineral is bloodstone, because above-mentioned flow is by one
Section weak magnetic, strong magnetic bulk concentrate feed tower and are milled to the mesh of granularity -325 more than 90% in the lump, can not only produce the overground phenomenon of magnetic ore deposit,
Metal loss is caused, but also tower grinding machine number of units can be added, ore grinding cost is added, meanwhile, also increase flotation operation
Mine-supplying quantity, will consume a large amount of floating agents while floatation equipment is increased, increase cost.
The content of the invention
The present invention's is to provide one kind and can reduce one section of thin broken operation and primary grinding operation, reduce flotation operation to ore deposit
Amount, reduces the consumption of floating agent, reduces composite ore high pressure roller mill, the double media of beneficiation cost, magnetic-red ore deposit sorting process.
What the present invention was realized in.A kind of composite ore high pressure roller mill, the double media of the present invention, magnetic-red ore deposit sorting process,
It is characterized in that comprising the following steps：
1) original ore size 300-0mm, through it is thick broken, in break that two sections broken and screening after, product granularity reaches -25mm contents
More than 90%,
2) granularity is reached that the product of -25mm contents more than 90% feeds " high nip roll mill-air classification system, acquisition grain
Spend for the product of -200 mesh 60%~65%；
3) granularity is fed into one section of weak magnetic machine for the product of -200 mesh 60%~65% to be sorted, sorts out one section of weak magnetic
Concentrate and one section of weakly magnetic tailings；
4) one section of weakly magnetic tailings feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral and one section of inferior fine magnetite concentrate and merges
Tower grinding machine is fed, the mesh of granularity -325 90%~95% is milled to；
5) the tower mill product of the mesh of granularity -325 90%~95% is fed into two sections of weak magnetic separators to be sorted, sorts out two
Section inferior fine magnetite concentrate and two weak strong magnetic tail ore deposits, two sections of inferior fine magnetite concentrates feed three sections of weak magnetic separators and sorted, and three sections of high intensity magnetic minerals are given
Enter one section of magnetic to shake ore separators；
Note：Magnetic shakes the efficient ore separators of ore separators i.e. magnetovibration, and the equipment has magnetic-assemblying area, Shan Zhen areas, is sorted when ore pulp enters
Area, during by magnetic-assemblying area, magnetic ore deposit forms magnetic linkage travelling vertically downward under the influence of a magnetic field, and non magnetic ore deposit is then in ascending water
Overflow, smashed again again when the magnetic linkage moved down passes through Shan Zhen areas, the non-magnetic of entrained with as mine tailing in the presence of stream
Property mineral overflowed with ascending current, mineral by multiple poly- magnetic, dodge and shake, be sufficiently separated gangue and iron mineral, with magnetic separator
Compare, can obtain high grade iron concentrate and low-grade tailings.
6) two sections of weakly magnetic tailingses feed two sections strong magnetomechanical and sorted, and two sections of high intensity magnetic minerals feed anion reverse floatation operation
Sorted, described anion reverse floatation operation using one section of roughing, one section it is selected, three sections scan operation, obtain flotation essence
Ore deposit；Shake ore separators concentrate and flotation concentrate of one section of magnetic is combined into final concentrate, grade be 66.5%~67.5%, yield be 35%~
38%；One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit, three sections of weakly magnetic tailingses, one section of magnetic shake ore separators mine tailing and flotation tailing is combined into
True tailings, grade 10.5%~12%.
It is an advantage of the invention that：
By composite ore, using " high pressure roller mill, double media, magnetic-Chi Kuang sortings ", technological process is sorted the present invention, is by -25mm
The product of content more than 90% feeds " high pressure roller mill-component classification " system, is directly achieved with the mesh content of granularity -200
60%-65% product, eliminates thin broken operation and primary grinding operation, and the product after regrinding has carried out magnetic iron ore and red respectively
The sorting process of iron ore, inferior fine magnetite concentrate is individually sorted, and qualified grade magnetic concentrate is obtained in advance, reduce flotation operation give ore deposit
Amount, reduces floating agent consumption, simplifies flowage structure, realize short route and sort, considerably reduce beneficiation cost, passes through
Ji remarkable benefit.
Brief description of the drawings
Fig. 1 is former composite ore " stage grinding, tower mill-strong magnetic-reverse floatation process flow chart.
Fig. 2 is a kind of composite ore high pressure roller mill of the invention, double media, magnetic-red ore deposit sorting process flow chart.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Fig. 2 a kind of composite ore high pressure roller mill of the present invention, double media, magnetic-red ore deposit sorting process, its feature exist
In comprising the following steps：
1) original ore size 300-0mm, through it is thick broken, in break that two sections broken and screening after, product granularity reaches -25mm contents
More than 90%,
2) granularity is reached that the product of -25mm contents more than 90% feeds " high nip roll mill-air classification system, acquisition grain
Spend for the product of -200 mesh 60%~65%；
3) granularity is fed into one section of weak magnetic machine for the product of -200 mesh 60%~65% to be sorted, sorts out one section of weak magnetic
Concentrate and one section of weakly magnetic tailings；
4) one section of weakly magnetic tailings feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral and one section of inferior fine magnetite concentrate and merges
Tower grinding machine is fed, the mesh of granularity -325 90%~95% is milled to；
5) the tower mill product of the mesh of granularity -325 90%~95% is fed into two sections of weak magnetic separators to be sorted, sorts out two
Section inferior fine magnetite concentrate and two weak strong magnetic tail ore deposits, two sections of inferior fine magnetite concentrates feed three sections of weak magnetic separators and sorted, and three sections of high intensity magnetic minerals are given
Enter one section of magnetic to shake machine；
6) two sections of weakly magnetic tailingses feed two sections strong magnetomechanical and sorted, and two sections of high intensity magnetic minerals feed anion reverse floatation operation
Sorted, described anion reverse floatation operation using one section of roughing, one section it is selected, three sections scan operation, obtain flotation essence
Ore deposit；Shake machine concentrate and flotation concentrate of one section of efficient magnetic is combined into final concentrate, grade be 66.5%~67.5%, yield be 35%~
38%；One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit, three sections of weakly magnetic tailingses, one section of efficient magnetic shake tail ore deposit and flotation tailing is combined into
True tailings, grade 10.5%~12%.
The present invention uses " high nip roll mill-air classification system ", reduces thin broken operation and primary grinding operation, will be weak
Magnetic concentrate is individually sorted, and qualified grade magnetic concentrate is obtained in advance, the mine-supplying quantity of flotation operation is reduced again, floating agent is reduced
Consumption, simplifies flowage structure, realizes short route and sorts, considerably reduces beneficiation cost.
Claims (1)
1. a kind of composite ore high pressure roller mill, double media, magnetic-red ore deposit sorting process, it is characterised in that comprise the following steps：
1) original ore size 300-0mm, through it is thick broken, in break that two sections broken and screening after, product granularity reach -25mm contents 90% with
On,
2) granularity is reached that the product of -25mm contents more than 90% feeds " high nip roll mill-air classification system, acquisition granularity
For the product of -200 mesh 60%~65%；
3) granularity is fed into one section of weak magnetic machine for the product of -200 mesh 60%~65% to be sorted, sorts out one section of inferior fine magnetite concentrate
With one section of weakly magnetic tailings；
4) one section of weakly magnetic tailings feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral and one section of inferior fine magnetite concentrate and merging is fed
Tower grinding machine, is milled to the mesh of granularity -325 90%~95%；
5) the tower mill product of the mesh of granularity -325 90%~95% is fed into two sections of weak magnetic separators to be sorted, sort out two sections it is weak
Magnetic concentrate and two weak strong magnetic tail ore deposits, two sections of inferior fine magnetite concentrates feed three sections of weak magnetic separators and sorted, and three sections of high intensity magnetic minerals feed one
Section magnetic shakes ore separators；
6) two sections of weakly magnetic tailingses feed two sections strong magnetomechanical and sorted, and two sections of high intensity magnetic minerals feed anion reverse floatation operation progress
Sort, described anion reverse floatation operation using one section of roughing, one section it is selected, three sections scan operation, obtain flotation concentrate；One
Shake ore separators concentrate and flotation concentrate of section magnetic is combined into final concentrate, and grade is that 66.5%~67.5%, yield is 35%~38%；
One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit, three sections of weakly magnetic tailingses, one section of magnetic shake ore separators mine tailing and flotation tailing is combined into most finality
Ore deposit, grade 10.5%~12%.
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| CN201710457122.7A CN107029868A (en) | 2017-06-16 | 2017-06-16 | A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic |
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| CN201710457122.7A CN107029868A (en) | 2017-06-16 | 2017-06-16 | A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252730A (en) * | 2017-06-16 | 2017-10-17 | 鞍钢集团矿业有限公司 | A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process |
| CN110898957A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Particle size grading pre-selection tailing discarding process for extremely lean hematite |
| CN110976033A (en) * | 2019-11-20 | 2020-04-10 | 郑州中科新兴产业技术研究院 | Method for preparing iron oxide red from specularite |
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| CN104888960A (en) * | 2015-06-12 | 2015-09-09 | 鞍钢集团矿业公司 | Magnetic-floating separation technology of micro-fine particle dissemination magnet-hematite mixed ore |
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| CN106492977A (en) * | 2016-10-14 | 2017-03-15 | 鞍钢集团矿业有限公司 | The strong magnetic reverse floatation process of lean hematite high pressure roller mill, weak magnetic |
| CN106583028A (en) * | 2016-12-15 | 2017-04-26 | 云南锡业股份有限公司卡房分公司 | Beneficiation method for low-grade scheelite rich in hedenbergite and andradite |
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Patent Citations (9)
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| EP0310539A2 (en) * | 1987-10-02 | 1989-04-05 | Noell GmbH | Method and device for flyash beneficiation |
| JP2003112156A (en) * | 2001-10-09 | 2003-04-15 | Matsushita Electric Ind Co Ltd | Method for treating waste household electric appliance to recycle the same as resources |
| CN101898168A (en) * | 2010-07-21 | 2010-12-01 | 衡阳县湘雁矿业有限公司 | Beneficiation method for removing long quarry impurities by adopting strong magnetic flotation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252730A (en) * | 2017-06-16 | 2017-10-17 | 鞍钢集团矿业有限公司 | A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process |
| CN110898957A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Particle size grading pre-selection tailing discarding process for extremely lean hematite |
| CN110976033A (en) * | 2019-11-20 | 2020-04-10 | 郑州中科新兴产业技术研究院 | Method for preparing iron oxide red from specularite |
| CN110976033B (en) * | 2019-11-20 | 2022-02-08 | 郑州中科新兴产业技术研究院 | Method for preparing iron oxide red from specularite |
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Application publication date: 20170811 |
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