CN108339661A - The full permanent magnetism short route of stage grinding handles mixed type iron ore technique - Google Patents
The full permanent magnetism short route of stage grinding handles mixed type iron ore technique Download PDFInfo
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- CN108339661A CN108339661A CN201810131762.3A CN201810131762A CN108339661A CN 108339661 A CN108339661 A CN 108339661A CN 201810131762 A CN201810131762 A CN 201810131762A CN 108339661 A CN108339661 A CN 108339661A
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- Prior art keywords
- permanent
- magnetic separator
- permanent magnetic
- mixed type
- magnetic
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
Abstract
The present invention relates to a kind of full permanent magnetism short routes of stage grinding to handle mixed type iron ore technique, includes the following steps：It is 29.00% 30.00% by grade, granularity is that 2mm raw ores below feed a closed circuit grinding, the scalping overflow of 200 mesh contents 60% 65% feeds a permanent magnetic motor, one magnetic essence feeds secondary closed circuit grinding, the secondary grading overflow of 200 mesh contents 90% 95% feeds secondary permanent magnetic motor, two magnetic essences feed permanent magnetic motor three times, three magnetic essences are the final concentrate of grade 63.7% 65.50%, one magnetic tail, two magnetic tails and three magnetic tails merge into the true tailings of grade 10.10% 10.60%, and iron recovery is 75.7% 77.70%.It is an advantage of the invention that：Performance efficiency, permanent magnetic motor simple in structure are used, simplifies and optimizes the mineral processing circuit of existing processing mixed type iron ore, reduce cost, economic benefit is apparent.
Description
Technical field
The invention belongs to technical field of beneficiation, and in particular to a kind of full permanent magnetism short route processing mixed type iron ore of stage grinding
Lapicide's skill.
Background technology
Mixed type iron ore is the not only iron ore containing magnetic iron ore but also containing bloodstone.Due to two kinds of valuable mineral magnetic iron ores
It is had differences with the physicochemical properties of bloodstone, usually handles mixed type iron ore and selected using two or more joint
Mine method.
Such as the patent No. 200710159126.3, patent name《The technique for handling mixed type iron ore》, the present invention discloses
A kind of technique of processing mixed type iron ore, the patent use two kinds of beneficiation methods that gravity treatment and magnetic separation combine.Raw ore passes through
An ore grinding is fed after broken and scalping composition is closed circuit, and after thickness grading, coarse grain sorts primary overflow through gravitational separation equipment
Afterwards, the concentrate of spiral chute feeds the larger dusting cover of screen size, and lower sieve is coarse-grain coarse ore concentrate, and gravity tailings throws tail through sweeping middle magnetic
Afterwards, middle magnetic essence, gravity treatment chats are swept, merges into coarse grain chats on sieve, chats feeds secondary grading and opened with what secondary grinding formed
Road grinding system is regrinded, and thickness grading is returned to after regrinding, and the particulate after thickness grading is sorted through magnetic plant, magnetic separation essence
Mine feeds the smaller dusting cover of sieve pore, and lower sieve is fine concentrate, and secondary grinding system is fed on sieve, and fine concentrate is closed with coarse-grain coarse ore concentrate
And be final concentrate, it sweeps middle magnetic tail mine and magnetic tailing merges into true tailings.
Such as the technique of the neat dashan concentrator processing mixed type iron ore of Anshan iron and steel plant is stage grinding, coarse and fine separation, magnetic-weight-
Floating joint sorting process uses three kinds of beneficiation methods that magnetic separation, gravity treatment and flotation combine.
In short, no matter using which kind of beneficiation combined method method processing mixed type iron ore, all there is technological process complexity, influence
Link is more, not manageability, the high problem of operating cost.
Invention content
The object of the present invention is to provide a kind of full permanent magnetism short routes of stage grinding to handle mixed type iron ore technique.
The invention is realized in this way.
A kind of full permanent magnetism short route of stage grinding of the present invention handles mixed type iron ore technique, it is characterised in that including under
Row step：
1）Be 29.00%-30.00% by head grade, granularity be 2mm mixed type iron ores below feed ore grinding with it is primary
It is classified the closed circuit grinding system constituted, granularity is that the scalping overflow product of -200 mesh content 60%-65% is fed once
Permanent-magnet concentration machine operation, a permanent magnetic separator concentrate feed secondary grading and constitute secondary closed circuit grinding system with secondary grinding；
2）Granularity is that the secondary grading overflow product of -200 mesh content 90%-95% feeds secondary permanent magnetic separator, secondary permanent-magnet magnetic
The concentrate of machine is selected to feed permanent magnetic separator three times, the concentrate of permanent magnetic separator is final concentrate three times, permanent magnetic separator
Tailing, the tailing of secondary permanent magnetic separator and the tailing of permanent magnetic separator merges into true tailings three times, true tailings grade is
10.10%-10.60%, final concentrate grade are 63.70%-65.50%, iron recovery 75.70%-77.70%.
The permanent magnetic separator, secondary permanent magnetic separator and permanent magnetic separator is BX permanent-magnet chamber type magnetic separation three times
Machine, half adverse current under casing, disk pack angle are 250 degree, and magnetic induction intensity is 400mT-1000 mT.
It is an advantage of the invention that：
1. structure that the present invention uses is simple, the permanent magnetic separator of performance efficiency can simplify and optimize existing processing and mix
The complicated ore-dressing technique of sections ore；
2. the present invention and the processing mixed type iron ore comparison of other beneficiation combined method methods, concentrate escapable cost 40-60 per ton
Member creates more economic benefits to ore dressing plant.
Description of the drawings
Fig. 1 is that the full permanent magnetism short route of stage grinding handles mixed type iron ore artwork.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of full permanent magnetism short route processing mixed type iron ore technique of stage grinding of the present invention, including under
Row step：
1）The raw ore that granularity is 50-25mm, grade is 30.00% is tested into sample ore after being crushed to -2mm or less, feeds primary mill
The closed circuit grinding system that mine is constituted with scalping, granularity are that the scalping overflow product of -200 mesh contents 64.00% is given
Enter a permanent-magnet concentration machine operation, the concentrate of the permanent magnetic separator that grade 53.40%, yield are 46.10% feeds secondary
Classification constitutes secondary closed circuit grinding system with secondary grinding；
2）Granularity is that the secondary grading overflow product of -200 mesh contents 94.50% feeds secondary permanent magnetic separator, and grade is
62.40%, the concentrate of secondary permanent magnetic separator that yield is 37.85% feeds permanent magnetic separator three times, three times permanent magnetic separator
Concentrate is final concentrate；The tailing and grade for the permanent magnetic separator that grade is 10.0%, yield is 53.9% are 12.0%, produce
The tailing and grade for the secondary permanent magnetic separator that rate is 8.25% be 16.4%, the permanent magnetic separator three times that yield is 2.05%
Tailing, which merges, constitutes true tailings, and true tailings grade is 10.40%, yield 64.2%, and final concentrate grade is 65.00%, production
Rate is 35.80%, iron recovery 77.57%.
A permanent magnetic separator of the present invention, secondary permanent magnetic separator and permanent magnetic separator is BX pipe magnetic separators three times
Formula magnetic separator, half adverse current under casing, disk pack angle are 250 degree, and magnetic induction intensity is 400mT-1000 mT.
Claims (2)
1. a kind of full permanent magnetism short route of stage grinding handles mixed type iron ore technique, it is characterised in that include the following steps：
1）Be 29.00%-30.00% by head grade, granularity be 2mm mixed type iron ores below feed ore grinding with it is primary
It is classified the closed circuit grinding system constituted, overflow granularity is that the scalping overflow product of -200 mesh 60%-65% is fed once
Permanent-magnet concentration machine operation, a permanent magnetic separator concentrate feed secondary grading and constitute secondary closed circuit grinding system with secondary grinding；
2）The overflow granularity ranging from secondary grading overflow product of -200 mesh 90%-95% feeds secondary permanent magnetic separator, it is secondary forever
The concentrate of magnetic separator feeds permanent magnetic separator three times, and the concentrate of permanent magnetic separator is final concentrate, a permanent-magnet concentration three times
The tailing of machine, the tailing of secondary permanent magnetic separator and the tailing of permanent magnetic separator merges into true tailings, true tailings product three times
Position is 10.10%-10.60%, and final concentrate grade is 63.7%-65.50%, iron recovery 75.70%-77.70%.
2. the full permanent magnetism short route of stage grinding according to claim 1 handles mixed type iron ore technique, it is characterised in that
The permanent magnetic separator, secondary permanent magnetic separator and permanent magnetic separator is BX permanent-magnet drum type magnetic separators three times, half is inverse
Under casing is flowed, disk pack angle is 250 degree, and magnetic induction intensity is 400mT-1000 mT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131762.3A CN108339661A (en) | 2018-02-09 | 2018-02-09 | The full permanent magnetism short route of stage grinding handles mixed type iron ore technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131762.3A CN108339661A (en) | 2018-02-09 | 2018-02-09 | The full permanent magnetism short route of stage grinding handles mixed type iron ore technique |
Publications (1)
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| CN108339661A true CN108339661A (en) | 2018-07-31 |
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| CN201810131762.3A Pending CN108339661A (en) | 2018-02-09 | 2018-02-09 | The full permanent magnetism short route of stage grinding handles mixed type iron ore technique |
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Citations (9)
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|---|---|---|---|---|
| CN101318159A (en) * | 2007-06-08 | 2008-12-10 | 鞍钢集团矿业公司 | Novel process for recycling Anshan type lean octahedral iron ore mine tailing |
| CN102019228A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Ultra-lean hematite dressing process |
| CN102198425A (en) * | 2011-04-23 | 2011-09-28 | 内蒙古科技大学 | Dry presorting and tailings discarding process for ultra-poor magnetite |
| CN102284359A (en) * | 2011-08-08 | 2011-12-21 | 鞍钢集团矿业公司 | Process for roasting, stage grinding, coarse-fine grading and reselection-magnetic separation of hematite |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN105618265A (en) * | 2016-01-27 | 2016-06-01 | 邯郸学院 | Beneficiation method for ultralow-grade iron ore |
| CN107149978A (en) * | 2017-07-04 | 2017-09-12 | 鞍钢集团矿业有限公司 | A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill |
| CN107597430A (en) * | 2017-08-28 | 2018-01-19 | 鞍钢集团矿业有限公司 | A kind of magnetic reconnection for handling iron tailings closes ore-dressing technique |
-
2018
- 2018-02-09 CN CN201810131762.3A patent/CN108339661A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318159A (en) * | 2007-06-08 | 2008-12-10 | 鞍钢集团矿业公司 | Novel process for recycling Anshan type lean octahedral iron ore mine tailing |
| CN102019228A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Ultra-lean hematite dressing process |
| CN102198425A (en) * | 2011-04-23 | 2011-09-28 | 内蒙古科技大学 | Dry presorting and tailings discarding process for ultra-poor magnetite |
| CN102284359A (en) * | 2011-08-08 | 2011-12-21 | 鞍钢集团矿业公司 | Process for roasting, stage grinding, coarse-fine grading and reselection-magnetic separation of hematite |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN105618265A (en) * | 2016-01-27 | 2016-06-01 | 邯郸学院 | Beneficiation method for ultralow-grade iron ore |
| CN107149978A (en) * | 2017-07-04 | 2017-09-12 | 鞍钢集团矿业有限公司 | A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill |
| CN107597430A (en) * | 2017-08-28 | 2018-01-19 | 鞍钢集团矿业有限公司 | A kind of magnetic reconnection for handling iron tailings closes ore-dressing technique |
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Application publication date: 20180731 |
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