CN107252730A - A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process - Google Patents
A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process Download PDFInfo
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- CN107252730A CN107252730A CN201710457973.1A CN201710457973A CN107252730A CN 107252730 A CN107252730 A CN 107252730A CN 201710457973 A CN201710457973 A CN 201710457973A CN 107252730 A CN107252730 A CN 107252730A
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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
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Abstract
It is classified again the present invention relates to a kind of composite ore high pressure roller mill wind, tower mill, magnetic weight sorting process comprises 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%, feed again " high nip roll mill-air classification system; the granularity of acquisition feeds one section of weak magnetic machine and one section strong magnetic is sorted for the product of 200 mesh 60%~65%; one section of inferior fine magnetite concentrate and one section of high intensity magnetic mineral feed tower grinding machine and be milled to the product of 325 mesh more than 90%; its product feeds two sections of weak magnetic machines, two sections of magnetic and shaken ore separators, two sections of intensity magnetic separators and gravity treatment centrifuge sorting operation, acquisition grade for 67%~67.5% concentrate.The present invention reduces thin broken operation and primary grinding operation, inferior fine magnetite concentrate is individually sorted, and qualified grade magnetic concentrate is obtained in advance, bloodstone is sorted using centrifuge, eliminates flotation operation, and technique is simply easily operated, flowage structure is simplified, beneficiation cost is considerably reduced.
Description
Technical field
It is classified again the invention belongs to technical field of beneficiation, more particularly to a kind of composite ore high pressure roller mill-wind, tower mill, magnetic-weight
Sorting process.
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 magnetic iron ore and bloodstone individually can be sorted, reduction beneficiation cost it is mixed
Close ore deposit high pressure roller mill-wind to be classified again, tower mill, magnetic-weight sorting process.
What the present invention was realized in.A kind of composite ore high pressure roller mill-wind of the present invention is classified again, tower mill, magnetic-sort again
Technique, 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 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 one section of magnetic machine that shakes and sorted, one section of magnetic shake machine concentrate to
Enter two sections 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, one section of magnetic shake ore separators mine tailing
With two sections of magnetic shake ore separators mine tailing merge feed gravity treatment centrifuge sorting operation, described gravity treatment centrifuge sorting operation uses one
Section roughing centrifuge, one section of selected centrifuge, one section scan centrifugation machine operation and two sections are scanned centrifuge sorting operation, it is selected from
Scheming concentrate and two sections of magnetic the ore separators concentrate that shakes are combined into final concentrate, and grade is 66.5%~67.5%, and yield is 35%~
38%；One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and two sections scan centrifuge mine tailing and are combined into true tailings, and grade 11%~
12%.
It is an advantage of the invention that：
The present invention is sorted composite ore using " high pressure roller mill-wind is classified, tower mill, magnetic-weight sorting process " again, is
The product of -25mm contents more than 90% is fed into " high pressure roller mill-component classification " system, thin broken operation and one section of mill is eliminated
Ore deposit operation, is directly achieved with the mesh content of granularity -200 60%-65% product, and the product after regrinding has carried out magnetic iron ore respectively
With the sorting process of bloodstone, inferior fine magnetite concentrate is individually sorted, and qualified grade magnetic concentrate is obtained in advance, and bloodstone is selected using centrifuge
Not, flotation operation is eliminated, eliminates floating agent, simplify flowage structure, considerably reduce beneficiation cost, economic benefit
Significantly.
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 that composite ore high pressure roller mill-wind of the present invention is classified again, tower mill, magnetic-weight 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-wind of the present invention is classified again, and tower mill, magnetic-weight sorting process, it is special
Levy and be to 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 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 one section of magnetic ore separators that shakes and sorted, and one section of magnetic shakes ore dressing
Machine concentrate feeds two sections of magnetic and shaken ore separators；
6) two sections of weakly magnetic tailingses feed two sections strong magnetomechanical and sorted, and two sections of high intensity magnetic minerals, one section of magnetic shake ore separators mine tailing
With two sections of magnetic shake ore separators mine tailing merge feed gravity treatment centrifuge sorting operation, described gravity treatment centrifuge sorting operation uses one
Section roughing centrifuge, one section of selected centrifuge, one section scan centrifugation machine operation and two sections are scanned centrifuge sorting operation, it is selected from
Scheming concentrate and two sections of magnetic the ore separators concentrate that shakes are combined into final concentrate, and grade is 66.5%~67.5%, and yield is 35%~
38%；One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and two sections scan centrifuge mine tailing and are combined into true tailings, and grade 11%~
12%.
The present invention reduces thin broken operation and primary grinding operation, inferior fine magnetite concentrate is individually sorted, and qualified grade is obtained in advance
Magnetic concentrate, bloodstone is sorted using centrifuge, eliminates flotation operation, without floating agent, simplifies flowage structure, significantly
Reduce beneficiation cost, remarkable in economical benefits.
Claims (1)
1. a kind of composite ore high pressure roller mill-wind is classified again, tower mill, magnetic-weight 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 one section of magnetic ore separators that shakes and sorted, and one section of magnetic shakes ore separators essence
Ore deposit feeds two sections of magnetic and shaken ore separators；
6) two sections of weakly magnetic tailingses feed two sections strong magnetomechanical and sorted, and two sections of high intensity magnetic minerals, one section of magnetic shake ore separators mine tailing and two
The section magnetic ore separators mine tailing that shakes merges and feeds gravity treatment centrifuge sorting operation, and described gravity treatment centrifuge sorting operation is thick using one section
Select centrifuge, one section of selected centrifuge, one section scan centrifugation machine operation and two sections are scanned centrifuge sorting operation, selected centrifuge
Concentrate and two sections of magnetic the ore separators concentrate that shakes are combined into final concentrate, and grade is 66.5%~67.5%, and yield is 35%~38%；One
The strong magnetic tail ore deposit of section, two sections strong magnetic tail ore deposit and two sections scan centrifuge mine tailing and are combined into true tailings, grade 11%~12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457973.1A CN107252730A (en) | 2017-06-16 | 2017-06-16 | A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process |
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| CN201710457973.1A CN107252730A (en) | 2017-06-16 | 2017-06-16 | A kind of composite ore high pressure roller mill wind is classified again, tower mill, magnetic weight sorting process |
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| CN107252730A true CN107252730A (en) | 2017-10-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580028A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore chats ore-dressing technique |
| CN108580029A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique |
| CN109894267A (en) * | 2019-03-20 | 2019-06-18 | 中钢集团马鞍山矿山研究院有限公司 | The magnetic of the red compound iron ore of magnetic-- weight method for separating |
| CN109909057A (en) * | 2019-02-28 | 2019-06-21 | 玉溪大红山矿业有限公司 | A kind of outdoor lava iron ore magnetic reconnection closes the ore-dressing technique of upgrading drop tail |
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| US5897063A (en) * | 1995-04-04 | 1999-04-27 | Krupp Polysius Ag | Method of comminuting ore material |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN104888947A (en) * | 2015-06-12 | 2015-09-09 | 鞍钢集团矿业公司 | Magnetic separation-centrifuge separation technology of micro-fine particle dissemination magnet-hematite mixed ore |
| CN106513163A (en) * | 2016-10-14 | 2017-03-22 | 鞍钢集团矿业有限公司 | High-pressure rolling and magnetic-gravity separation process for lean hematite |
| CN107029868A (en) * | 2017-06-16 | 2017-08-11 | 鞍钢集团矿业有限公司 | A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic |
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2017
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Patent Citations (5)
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| US5897063A (en) * | 1995-04-04 | 1999-04-27 | Krupp Polysius Ag | Method of comminuting ore material |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
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| 杨松荣等: "《碎磨工艺及应用》", 31 January 2013, 冶金工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580028A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore chats ore-dressing technique |
| CN108580029A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique |
| CN109909057A (en) * | 2019-02-28 | 2019-06-21 | 玉溪大红山矿业有限公司 | A kind of outdoor lava iron ore magnetic reconnection closes the ore-dressing technique of upgrading drop tail |
| CN109909057B (en) * | 2019-02-28 | 2021-08-20 | 玉溪大红山矿业有限公司 | Ore dressing process for magnetic-gravity combined upgrading and tailing lowering of open-air lava iron ore |
| CN109894267A (en) * | 2019-03-20 | 2019-06-18 | 中钢集团马鞍山矿山研究院有限公司 | The magnetic of the red compound iron ore of magnetic-- weight method for separating |
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Application publication date: 20171017 |
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