CN107096638A - A kind of iron ore composite ore point mill, sorting, magnetic-gravity separation technique - Google Patents
A kind of iron ore composite ore point mill, sorting, magnetic-gravity separation technique Download PDFInfo
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- CN107096638A CN107096638A CN201710457979.9A CN201710457979A CN107096638A CN 107096638 A CN107096638 A CN 107096638A CN 201710457979 A CN201710457979 A CN 201710457979A CN 107096638 A CN107096638 A CN 107096638A
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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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Abstract
The present invention relates to a kind of iron ore composite ore point mill, sorting, magnetic-gravity ore technique comprises the following steps：By raw ore through one section of closed circuit grinding system, the overflow of scalping feeds one section of weak magnetic machine, secondary closed circuit grinding, two sections of low intensity magnetic separations, one section of magnetic shake ore separators sort with two sections of magnetic shake ore separators carry out magnetic concentration working, two sections of magnetic shake ore separators concentrate be final magnetic concentrate；The mine tailing of one section of weak magnetic separator feeds one section of intensity magnetic separator, two sections strong magnetic, tower grinding machine and gravity treatment centrifuge sorting operation, and two sections of selected centrifuge concentrate and two sections of magnetic the ore separators concentrate that shakes are combined into final concentrate, grade 66.5%~67.5%.The present invention carries out independent regrinding and reconcentration to the magnetic ore deposit in composite ore and bloodstone, sort respectively, it is to avoid overground phenomenon, and bloodstone is sorted using centrifuge, anion reverse floatation operation is instead of, saves floating agent, considerably reduce beneficiation cost.
Description
Technical field
The invention belongs to technical field of beneficiation, more particularly to a kind of iron ore composite ore point mill, sorting, magnetic-floating magnetic-weight
Ore-dressing 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
Being to provide for the present invention is a kind of to one section of inferior fine magnetite concentrate and high intensity magnetic mineral progress difference ore grinding, difference sorting process,
Tower grinding machine number of units is reduced, cancels flotation operation, without reagent consumption, iron ore composite ore point mill, the sorting of beneficiation cost is reduced,
Magnetic-gravity ore technique.
What the present invention was realized in.A kind of iron ore composite ore point mill of the present invention, sorting, magnetic-gravity ore technique, its
It is characterised by comprising the following steps：
1) iron ore composite ore is crushed into granularity to constitute through one section of ball mill and cyclone classification in 12mm~0mm raw ore
Closed circuit grinding system, obtain the mesh content 50%~60% of scalping overflow product granularity -200；
2) scalping overflow product feeds one section of weak magnetic machine and sorted, and obtains one section of inferior fine magnetite concentrate and one section of weak magnetic tail
Ore deposit, one section of inferior fine magnetite concentrate feeds the secondary closed circuit grinding that secondary grading machine is constituted with secondary ball milling, the overflow granularity of secondary grading
- 200 mesh contents 88%~90% are reached, the overflow of secondary grading feeds two sections of weak magnetic machines and sorted, and two sections of inferior fine magnetite concentrates are given
Enter one section of magnetic ore separators that shakes to sort, one section of magnetic ore separators concentrate that shakes feeds two sections of selected magnetic and shaken ore separators, two sections of magnetic shake ore separators
Concentrate be magnetic concentrate；
3) mine tailing of one section of weak magnetic machine feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral feeds two sections strong magnetomechanical and entered
Row is selected, and two sections of high intensity magnetic minerals and two sections of magnetic the ore separators mine tailing that shakes merge and feeds three classifying cyclones and closing that tower grinding machine is formed
Road grinding system, three Grading Overflow granularities reach -325 mesh 90%~95%；
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.
4) mesh of granularity -325 90%~95% 3 time Grading Overflow product feeds gravity treatment centrifuge sorting operation, described weight
Select centrifuge sorting operation using one section of roughing, two sections it is selected, one section scan operation, two sections of selected centrifuge concentrate and two sections of magnetic
The machine ore separators concentrate that shakes is combined into final concentrate, grade 66.5%~67.5%；Two sections of weakly magnetic tailingses, one section of magnetic shake ore dressing tail
Ore deposit, one section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and scan centrifuge mine tailing and be combined into true tailings, grade 11%~12%.
It is an advantage of the invention that：
Because the present invention employs a point mill, sorting to iron ore composite ore, magnet-gravity ore technological process shifts to an earlier date magnetic ore deposit
Select, be milled to respectively after the granularity of needs, the early principle received is thrown according to early, the magnetic ore deposit in composite ore and bloodstone are carried out single
Only regrinding and reconcentration, is sorted respectively, and the magnetic iron ore for having reached single iron dissociation is obtained in suitable granularity using the method for single magnetic separation
Obtain qualified concentrate containing, it is to avoid produced after tower is ground overground.Qualified magnetic concentrate is reclaimed ahead of time under the conditions of corase grind granularity, simultaneously
The present invention is sorted to bloodstone using centrifuge, be instead of anion reverse floatation operation, is saved floating agent, is greatly lowered
Beneficiation cost, remarkable in economical benefits.
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 iron ore composite ore of the invention point mill, sorting, magnet-gravity ore process chart.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Fig. 2 a kind of iron ore composite ore point mill of the present invention, sorting, magnetic-gravity ore technique, it is characterised in that bag
Include the following steps：
1) iron ore composite ore is crushed into granularity to constitute through one section of ball mill and cyclone classification in 12mm~0mm raw ore
Closed circuit grinding system, obtain -200 mesh contents 50%~60% in scalping overflow product；
2) scalping overflow product feeds one section of weak magnetic machine and sorted, and obtains one section of inferior fine magnetite concentrate and one section of weak magnetic tail
Ore deposit, one section of inferior fine magnetite concentrate feeds the secondary closed circuit grinding that secondary grading machine is constituted with secondary ball milling, the overflow granularity of secondary grading
- 200 mesh contents 88%~90% are reached, the overflow of secondary grading feeds two sections of weak magnetic machines and sorted, and two sections of inferior fine magnetite concentrates are given
Enter one section of magnetic ore separators that shakes to sort, one section of magnetic ore separators concentrate that shakes feeds two sections of magnetic ore separators that shakes and sorted, two sections of magnetic shake ore separators
Concentrate be final magnetic concentrate；
3) mine tailing of one section of weak magnetic machine feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral feeds two sections strong magnetomechanical and entered
Row is sorted, and two sections of high intensity magnetic minerals and two sections of magnetic the ore separators mine tailing that shakes merge and feeds three classifying cyclones and closing that tower grinding machine is formed
Road grinding system, three Grading Overflow granularities reach -325 mesh 90%~95%；
4) mesh of granularity -325 90%~95% 3 time Grading Overflow product feeds gravity treatment centrifuge sorting operation, described weight
Select centrifuge sorting operation using one section of roughing, two sections it is selected, one section scan operation, two sections of selected centrifuge concentrate and two sections of magnetic
The ore separators concentrate that shakes is combined into final concentrate, grade 66.5%~67.5%；Two sections of weakly magnetic tailingses, one section of magnetic shake ore separators mine tailing,
One section strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and scan centrifuge mine tailing and be combined into true tailings, grade 11%~12%.
Because the present invention is sorted to bloodstone using centrifuge, anion reverse floatation operation is instead of, flotation medicine is saved
Agent, considerably reduces beneficiation cost, remarkable in economical benefits.
Claims (1)
1. a kind of iron ore composite ore point mill, sorting, magnetic-gravity ore technique, it is characterised in that comprise the following steps：
1) iron ore composite ore is crushed to raw ore of the granularity in 12mm~0mm through one section of ball mill and closing that cyclone classification is constituted
Road grinding system, obtains the mesh content 50%~60% of scalping overflow product granularity -200；
2) scalping overflow product feeds one section of weak magnetic machine and sorted, and obtains one section of inferior fine magnetite concentrate and one section of weakly magnetic tailings,
One section of inferior fine magnetite concentrate feeds the secondary closed circuit grinding that secondary grading machine is constituted with secondary ball milling, and the overflow granularity of secondary grading reaches
To -200 mesh contents 88%~90%, the overflow of secondary grading feeds two sections of weak magnetic machines and sorted, and two sections of inferior fine magnetite concentrates are fed
One section of magnetic ore separators that shakes is sorted, and one section of magnetic ore separators concentrate that shakes feeds two sections of magnetic ore separators that shakes and sorted, and two sections of magnetic shake ore separators
Concentrate is final magnetic concentrate；
3) mine tailing of one section of weak magnetic machine feeds one section strong magnetomechanical and sorted, and one section of high intensity magnetic mineral feeds two sections strong magnetomechanical and selected
Not, two sections of high intensity magnetic minerals and two sections of magnetic the ore separators mine tailing that shakes merge and feed three classifying cyclones and the closed circuit mill of tower grinding machine formation
Ore deposit system, three Grading Overflow granularities reach -325 mesh 90%~95%；
4) mesh of granularity -325 90%~95% 3 time Grading Overflow product feeds gravity treatment centrifuge sorting operation, described gravity treatment from
Scheming sorting operation using one section of roughing, two sections it is selected, one section scan operation, two sections of selected centrifuge concentrate and two sections of magnetic shake choosing
Ore deposit machine concentrate is combined into final concentrate, grade 66.5%~67.5%；Two sections of weakly magnetic tailingses, one section of magnetic shake ore separators mine tailing, one section
Strong magnetic tail ore deposit, two sections strong magnetic tail ore deposit and scan centrifuge mine tailing and be combined into true tailings, grade 11%~12%.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597411A (en) * | 2017-09-06 | 2018-01-19 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method for improving high-sulfur mixed magnetite and hematite stone sorting index |
| CN108212506A (en) * | 2018-03-09 | 2018-06-29 | 中钢集团马鞍山矿山研究院有限公司 | A kind of classification pre-selection of magnetic-red-water chestnut compound iron ore, fine New Method for Sorting |
| 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 |
| CN108889441A (en) * | 2018-08-31 | 2018-11-27 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique of two product of high yield |
| CN109550587A (en) * | 2019-01-24 | 2019-04-02 | 魏建民 | The red composite ore ore-dressing technique of magnetic |
| CN111013809A (en) * | 2019-12-10 | 2020-04-17 | 玉溪大红山矿业有限公司 | Mineral processing technology for separating, grinding, sorting, upgrading and tailing reducing of lava ore |
| CN112808447A (en) * | 2021-01-27 | 2021-05-18 | 鞍钢集团矿业设计研究院有限公司 | Grading grinding and selecting process for lean hematite pre-selection coarse-grained concentrate |
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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 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107597411A (en) * | 2017-09-06 | 2018-01-19 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method for improving high-sulfur mixed magnetite and hematite stone sorting index |
| CN107597411B (en) * | 2017-09-06 | 2019-10-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of raising high-sulfur magnetic-red compound iron ore sorting index beneficiation method |
| CN108212506A (en) * | 2018-03-09 | 2018-06-29 | 中钢集团马鞍山矿山研究院有限公司 | A kind of classification pre-selection of magnetic-red-water chestnut compound iron ore, fine New Method for Sorting |
| CN108212506B (en) * | 2018-03-09 | 2019-10-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of magnetic-is red-the classification pre-selection of water chestnut compound iron ore, fine New Method for Sorting |
| 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 |
| CN108889441A (en) * | 2018-08-31 | 2018-11-27 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique of two product of high yield |
| CN109550587A (en) * | 2019-01-24 | 2019-04-02 | 魏建民 | The red composite ore ore-dressing technique of magnetic |
| CN111013809A (en) * | 2019-12-10 | 2020-04-17 | 玉溪大红山矿业有限公司 | Mineral processing technology for separating, grinding, sorting, upgrading and tailing reducing of lava ore |
| CN112808447A (en) * | 2021-01-27 | 2021-05-18 | 鞍钢集团矿业设计研究院有限公司 | Grading grinding and selecting process for lean hematite pre-selection coarse-grained concentrate |
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Application publication date: 20170829 |