CN107159445A - A kind of iron ore composite ore point mill, sorting, magnetic-ore flotation technique - Google Patents
A kind of iron ore composite ore point mill, sorting, magnetic-ore flotation technique Download PDFInfo
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- CN107159445A CN107159445A CN201710457123.1A CN201710457123A CN107159445A CN 107159445 A CN107159445 A CN 107159445A CN 201710457123 A CN201710457123 A CN 201710457123A CN 107159445 A CN107159445 A CN 107159445A
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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
The present invention relates to a kind of iron ore composite ore point mill, sorting, magnetic-ore flotation technique comprises the following steps：By raw ore through one section of closed circuit grinding, the overflow of scalping feeds one section of weak magnetic machine, one section of inferior fine magnetite concentrate feeds secondary closed circuit grinding, the overflow of secondary grading feeds one section of dehydration groove, two sections of weak magnetics and one section of magnetic machine that shakes and sorted, obtain magnetic concentrate, one section of weakly magnetic tailings feeds one section strong magnetomechanical, one section of high intensity magnetic mineral and two sections of weakly magnetic tailingses and one section of magnetic the ore separators mine tailing that shakes merge and feed three times and close classification road grinding system, three Grading Overflow products feed two sections of intensity magnetic separators and sorted, two sections of intensity magnetic separator concentrate feed anion reverse floatation operation, obtain flotation concentrate；Magnetic concentrate is combined into the final concentrate of grade 66.5%~67.5% with flotation concentrate.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, while beneficiation cost is greatly reduced.
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-flotation miner
Skill.
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 true tailings, 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 be to provide it is a kind of one section of inferior fine magnetite concentrate and high intensity magnetic mineral are carried out respectively ore grinding, sort respectively, reduce
Tower grinding machine number of units, reduces floating agent dosage, reduces iron ore composite ore point mill, the sorting, magnetic-ore flotation technique of beneficiation cost.
What the present invention was realized in.A kind of iron ore composite ore point mill of the present invention, sorting, magnetic-ore flotation 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 -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 one section of dehydration groove, and one section of dehydration groove concentrate feeds two sections
Weak magnetic machine is sorted, and two sections of inferior fine magnetite concentrates feed one section of magnetic ore separators that shakes and sorted, and one section of magnetic ore separators that shakes sorts concentrate for most
Whole magnetic concentrate；
3) mine tailing of one section of weak magnetic separator feeds one section strong magnetomechanical and sorted, one section of high intensity magnetic mineral and two sections of weakly magnetic tailingses
Merge with one section of magnetic ore separators mine tailing that shakes and feed three classifying cyclones and the closed circuit grinding of tower grinding machine formation, three classification eddy flows
Device overflow granularity reaches -325 mesh 90%~95%；
4) three classifying cyclone overflow products of the mesh of granularity -325 90%~95% are fed into two sections strong magnetomechanical to be selected
Not, two sections of high intensity magnetic minerals feed anion reverse floatation operation and sorted, and described anion reverse floatation operation is thick using one section
Choosing, one section it is selected, three sections scan operation, obtain flotation concentrate；Magnetic concentrate is combined into final concentrate, grade with flotation concentrate
66.5%~67.5%.One section strong magnetic tail ore deposit, one section of dehydration groove mine tailing, two sections strong magnetic tail ore deposit, flotation tailing are combined into true tailings,
Grade 11%~12%.
It is an advantage of the invention that：
Sort because the present invention employs " point mill, sorting, magnetic-floating " technological process to iron ore composite ore, magnetic ore deposit is carried
Before select, be milled to respectively after the granularity of needs, throw the early principle received according to early, the magnetic ore deposit in composite ore and bloodstone are carried out
Independent regrinding and reconcentration, is sorted respectively, the method that the magnetic iron ore for having reached single iron dissociation is used into single magnetic separation in suitable granularity
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, together
When monomer dissociation magnetic ore deposit do not enter flotation operation, floating agent dosage and beneficiation cost is greatly reduced, it is economical
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 iron ore composite ore of the invention point mill, sorting, magnetic-floating process flow figure.
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-ore flotation 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 one section of dehydration groove, and one section of dehydration groove concentrate feeds two sections
Weak magnetic machine is sorted, and two sections of inferior fine magnetite concentrates feed one section of magnetic ore separators that shakes and sorted, and one section of magnetic ore separators concentrate that shakes is magnetic separation essence
Ore deposit；
Magnetic is shaken the efficient ore separators of ore separators i.e. magnetovibration, and the equipment has magnetic-assemblying area, Shan Zhen areas, and area is sorted when ore pulp enters,
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 current
In the presence of overflowed as mine tailing, when the magnetic linkage moved down pass through Shan Zhen areas when again smashed again, entrained with it is non magnetic
Mineral overflow with ascending current, and mineral shake by multiple poly- magnetic, sudden strain of a muscle, are sufficiently separated gangue and iron mineral, with magnetic separator phase
Than can obtain high grade iron concentrate and low-grade tailings.
3) mine tailing of one section of weak magnetic separator feeds one section strong magnetomechanical and sorted, one section of high intensity magnetic mineral and two sections of weakly magnetic tailingses
Merge with one section of magnetic ore separators mine tailing that shakes and feed three classifying cyclones and the closed circuit grinding system of tower grinding machine formation, three classifications
Cyclone overflow granularity reaches -325 mesh 90%~95%；
4) three classifying cyclone overflow products of the mesh of granularity -325 90%~95% are fed into two sections strong magnetomechanical to be selected
Not, two sections of high intensity magnetic minerals feed anion reverse floatation operation and sorted, and described anion reverse floatation operation is thick using one section
Choosing, one section it is selected, three sections scan operation, obtain flotation concentrate；Magnetic concentrate is combined into final concentrate, grade with flotation concentrate
66.5%~67.5%.One section strong magnetic tail ore deposit, one section of dehydration groove mine tailing, two sections strong magnetic tail ore deposit, flotation tailing are combined into true tailings,
Grade 11%~12%.
Because the present invention has reached that the magnetic ore deposit of monomer dissociation does not enter flotation operation, floating agent is greatly reduced
Consumption and beneficiation cost.
Claims (1)
1. a kind of iron ore composite ore point mill, sorting, magnetic-ore flotation 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 -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 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 one section of dehydration groove, one section of dehydration groove concentrate feed two sections it is weak
Magnetomechanical is sorted, and two sections of inferior fine magnetite concentrates feed one section of magnetic ore separators that shakes and sorted, and one section of magnetic shakes, and to sort concentrate be final to ore separators
Magnetic concentrate；
3) mine tailing of one section of weak magnetic separator feeds one section strong magnetomechanical and sorted, one section of high intensity magnetic mineral, two sections of weakly magnetic tailingses and one
The section magnetic ore separators mine tailing that shakes merges and feeds three classifying cyclones and the closed circuit grinding system of tower grinding machine formation, three Grading Overflows
The mesh of granularity -325 90%~95%；
4) three Grading Overflow products of the mesh of granularity -325 90%~95% are fed into two sections strong magnetomechanical to be sorted, two sections strong magnetic
Concentrate feeds anion reverse floatation operation and sorted, described anion reverse floatation operation using one section of roughing, one section it is selected,
Three sections are scanned operation, obtain flotation concentrate；Magnetic concentrate is combined into final concentrate, grade 66.5%~67.5% with flotation concentrate.
One section strong magnetic tail ore deposit, one section of dehydration groove mine tailing, two sections strong magnetic tail ore deposit, flotation tailing are combined into true tailings, grade 11%~12%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108405171A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | A kind of method that magnetic-floats process integration recycling magnetic tailing |
| CN108816498A (en) * | 2018-05-16 | 2018-11-16 | 辽宁科技大学 | Anshan-type magnetite ore Beneficiation flowsheet |
| CN109692752A (en) * | 2019-01-08 | 2019-04-30 | 中冶北方（大连）工程技术有限公司 | It is a kind of to handle the ore-dressing technique that compound iron ore is selected containing a variety of iron mineral difficulties |
| CN110898958A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Mineral processing technology for treating high-iron carbonate lean magnetic hematite mixed iron ore |
| 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 |
| CN114653472A (en) * | 2022-03-17 | 2022-06-24 | 中钢集团马鞍山矿山研究总院股份有限公司 | Magnetic-floating combined mineral separation new process for ultrafine grained hematite |
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| CN102259053A (en) * | 2010-10-30 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recovering iron resources in reverse flotation tailings |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN103586146A (en) * | 2013-11-13 | 2014-02-19 | 鞍钢集团矿业公司 | Mineral processing process for processing mixed ore of magnetic iron ore and hematite-limonite ore |
| RU2521380C1 (en) * | 2013-02-05 | 2014-06-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Complex processing of martite-hydrohematite ore |
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| CN205797448U (en) * | 2016-07-13 | 2016-12-14 | 攀钢集团矿业有限公司 | Vanadium titano-magnetite sorts production line |
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| CN102259053A (en) * | 2010-10-30 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recovering iron resources in reverse flotation tailings |
| RU2521380C1 (en) * | 2013-02-05 | 2014-06-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Complex processing of martite-hydrohematite ore |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN103586146A (en) * | 2013-11-13 | 2014-02-19 | 鞍钢集团矿业公司 | Mineral processing process for processing mixed ore of magnetic iron ore and hematite-limonite ore |
| 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 |
| CN205797448U (en) * | 2016-07-13 | 2016-12-14 | 攀钢集团矿业有限公司 | Vanadium titano-magnetite sorts production line |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405171A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | A kind of method that magnetic-floats process integration recycling magnetic tailing |
| 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 |
| CN108816498A (en) * | 2018-05-16 | 2018-11-16 | 辽宁科技大学 | Anshan-type magnetite ore Beneficiation flowsheet |
| CN109692752A (en) * | 2019-01-08 | 2019-04-30 | 中冶北方（大连）工程技术有限公司 | It is a kind of to handle the ore-dressing technique that compound iron ore is selected containing a variety of iron mineral difficulties |
| CN109692752B (en) * | 2019-01-08 | 2020-07-28 | 中冶北方（大连）工程技术有限公司 | Mineral processing technology for processing refractory mixed iron ore containing multiple iron minerals |
| CN110898958A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Mineral processing technology for treating high-iron carbonate lean magnetic hematite mixed iron ore |
| CN110898958B (en) * | 2019-11-13 | 2021-07-13 | 鞍钢集团矿业有限公司 | Mineral processing technology for treating high-iron carbonate lean magnetic hematite mixed iron ore |
| 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 |
| CN114653472A (en) * | 2022-03-17 | 2022-06-24 | 中钢集团马鞍山矿山研究总院股份有限公司 | Magnetic-floating combined mineral separation new process for ultrafine grained hematite |
| CN114653472B (en) * | 2022-03-17 | 2023-09-15 | 中钢集团马鞍山矿山研究总院股份有限公司 | Magnetic-floatation combined mineral separation novel process for ultrafine hematite ore |
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