CN110102403A - The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system and technique in HPGR process - Google Patents
The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system and technique in HPGR process Download PDFInfo
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- CN110102403A CN110102403A CN201910462723.6A CN201910462723A CN110102403A CN 110102403 A CN110102403 A CN 110102403A CN 201910462723 A CN201910462723 A CN 201910462723A CN 110102403 A CN110102403 A CN 110102403A
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- Prior art keywords
- cyclone
- mine
- feeds
- coarse grain
- wet type
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000000227 grinding Methods 0.000 title claims abstract description 20
- 238000007885 magnetic separation Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000006148 magnetic separator Substances 0.000 claims abstract description 13
- 239000012141 concentrate Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical group O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- 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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- Manufacture And Refinement Of Metals (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The present invention relates to belt conveyor, ball mill, pump pond, cyclone under belt conveyor, ore grinding storehouse, storehouse in the pre- magnetic separation of coarse grain wet type in a kind of HPGR process and closed circuit grinding classification system and technique, including the pre- magnetic separator of coarse grain wet type, straight line shaker, sieve to mine pump I, cyclone group I, stirred tank, cyclone to mine pump II and cyclone group II.Its technique is that the undersize material of high pressure roller mill closed-circuit screen successively feeds the pre- magnetic separator of coarse grain wet type and straight line shaker, straight line shaker oversize is sieved upper belt conveyor, ore pocket, lower belt conveyor and feeds ball mill, the ore discharge of ball mill feeds pump pond, feeds cyclone group I to mine pump I through cyclone and carries out graded operation；The undersize of straight line shaker feeds stirred tank, feeds cyclone group II to mine pump II through cyclone and carries out graded operation.Present system configuration is rationally, reliable for operation, can be taken according to respective material properties and adjust separately running parameter, and management easy to produce optimizes production target.
Description
Technical field
The invention belongs to ore dressing fields, and in particular to the pre- magnetic separation of coarse grain wet type and closed circuit mill in process in a kind of HPGR process
Mine hierarchy system and technique.
Background technique
At present in magnetic iron ore Beneficiation flowsheet, high pressure roller applies more and more extensive, general technology flowage structure are as follows: high pressure
Pre- magnetic separation-the grind grading of the closed circuit screening-coarse grain of roller-wet type is closed circuit.The technique core equipment is high-pressure roller mill, in order to avoid column
Nail is impaired to be injured caused by equipment roll surface, generally needs to shut down 2 hours daily for stud in high pressure roller use process
Examination and maintenance need to shut down a few hours for 15 days or so for more side dams, furthermore in the closed circuit sieving circuit of high pressure roller wet type
The maintenance of belt conveyor and chute is also required to system-down.Ore grinding of ore classification process operating rate is generally higher, except plan
Maintenance is outer all to be continuously run.HPGR process mesohigh roller wet type is closed circuit and grind grading closed-circuit operation rate is difficult to match, such as intermediate
If buffer unit, because pre- magnetic concentrate is ore pulp form, stored by 24 hours, ore pulp amount is excessive, sets without suitably storage
It applies, needs to improve the pre- magnetic separation of coarse grain in HPGR process with grind grading closed-circuit system accordingly, to solve the above problems.
Summary of the invention
The object of the present invention is to provide the system of the pre- magnetic separation of coarse grain wet type in a kind of HPGR process and closed circuit grinding classification and
Technique.
The object of the present invention is achieved like this.
The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system, feature exist in a kind of HPGR process according to the invention
In, including belt conveyor, ball mill, pump under belt conveyor, ore grinding storehouse, storehouse on the pre- magnetic separator of coarse grain wet type, straight line shaker, sieve
Pond, cyclone pump II and cyclone group II to mine to mine pump I, cyclone group I, stirred tank, cyclone,
The feed inlet and high pressure roller mill closed-circuit screen of the pre- magnetic separator of coarse grain wet type sieve the outlet of lower mine and connect, coarse grain wet type premagnetization
It selects the concentrate of machine to export to be connected with straight line shaker, mine outlet connection on the sieve of belt conveyor and straight line shaker on sieve, belt on sieve
The mine end of unloading of conveyer is connect with ore pocket, and the mine mouth that goes out of ore pocket is connect with belt conveyor under storehouse, belt conveyor under storehouse
The feed port for unloading mine end and ball mill connects, and the gape of ball mill is connect with pump pond, pump the mine mouth out in pond by cyclone to
Mine pump I and defeated pipe I are connected with the feed port of cyclone group I, and mine outlet is connect with stirred tank under the sieve of straight line shaker, stirred tank
The mine mouth that goes out be connected to mine pump II and defeated pipe II with the feed port of cyclone group II by cyclone, cyclone group I and revolve
The overflow port of stream device group II is connect with follow-up process equipment, and the sand setting of cyclone group I and cyclone group II passes through chute and ball milling
The feed port of machine connects.
Preferably, the cyclone group I and cyclone group II are arranged on the same cyclone group platform, equally constitute
Annular distribution shares a riffler and overflow launder.
Preferably, the screen size of the high pressure roller closed-circuit screen is 3mm, and the screen size of the straight line shaker is
0.5mm。
Preferably, the volume of the ore pocket is designed by meeting storage the pre- magnetic concentrate dry mine amount of coarse grain 24 hours, stirring
The volume of slot is designed by meeting ore pulp amount 2 hours under storage is sieved.
The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification technique in a kind of HPGR process of the present invention, which is characterized in that including
The following steps:
Undersize material of the granularity of high pressure roller mill closed-circuit screen greater than 3mm feeds the pre- magnetic separator of coarse grain wet type, the pre- magnetic separation of coarse grain wet type
The pre- magnetic concentrate of machine feeds straight line shaker, and oversize of the granularity of straight line shaker greater than 0.5mm is sieved upper belt conveyor and fed
Ore pocket, the pre- magnetic concentrate of the coarse fraction of ore pocket feed ball mill through belt conveyor under storehouse, and the ore discharge of ball mill feeds pump
Pond feeds cyclone group I to mine pump I and defeated pipe I using cyclone and carries out graded operation；
Undersize of the granularity of straight line shaker less than 0.5mm feeds stirred tank, using cyclone to mine pump II and defeated pipe II
It feeds cyclone group II and carries out graded operation；The overflow merging of cyclone group I and cyclone group II feeds follow-up process, cyclone
The sand setting of group I and cyclone group II feeds ball mill by chute together；Wherein ball mill and cyclone group I form closed circuit mill
Mine, the sand setting of cyclone group I are the sand return of ball mill；Cyclone group II is the pre-classification equipment of ball mill, cyclone group II
Sand setting and ore pocket the pre- magnetic concentrate of coarse fraction constitute ball mill to mine.
The invention has the advantages that
Since present invention employs the pre- magnetic separation of above-mentioned coarse grain wet type and closed circuit grinding classification system, the undersize materials and sieve of straight line shaker
Upper material feeds ore pocket-ball mill-cyclone group I and stirred tank-cyclone group II respectively, that is, can guarantee and stop in 2 hours
Machine overhauling, the interior storage ore pulp of stirred tank can guarantee that grind grading process still runs well, and the setting of ore pocket can guarantee mill
Mine is classified full productions in 24 hours of process, avoids the significantly underproduction, meanwhile, it can be taken according to respective material properties and be adjusted separately
Running parameter, management easy to produce optimize production target.The on-the-sieve material of straight line shaker as pass through pump raise send if particle it is thicker, it is defeated
Send path longer, pump abrasion is larger, and using Leather Belt Conveyance, system is more stable and reliable.
Detailed description of the invention
Fig. 1 is the pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system in the HPGR process of exemplary embodiment of the present
Schematic diagram.
Fig. 2 is the cyclone configuration schematic diagram of exemplary embodiment of the present.
Description of symbols:
The pre- magnetic separator of 1- coarse grain wet type, 2- straight line shaker, belt conveyor, 6- under belt conveyor, 4- ore grinding storehouse, the storehouse 5- on 3- sieve
Ball mill, 7- cyclone group I, 8- cyclone group II, 9- stirred tank, 10- pump pond, 11- cyclone are given to mine pump I, 12- cyclone
Mine pumps II, 13- high pressure roller closed-circuit screen.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figs. 1-2, the pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system in a kind of HPGR process of the invention,
It is characterized in that, including belt conveyor under belt conveyor 3, ore grinding storehouse 4, storehouse on the pre- magnetic separator 1 of coarse grain wet type, straight line shaker 2, sieve
5, ball mill 6, pump pond 10, cyclone are to mine pump I 11, cyclone group I 7, stirred tank 9, cyclone to mine pump II 12 and cyclone
Group II 8,
The feed inlet and high pressure roller mill closed-circuit screen 13 of the pre- magnetic separator 1 of coarse grain wet type of the present invention sieve the outlet of lower mine and connect, slightly
The concentrate outlet of the grain pre- magnetic separator 1 of wet type is connected with straight line shaker 2, and mine exports on the sieve of belt conveyor 3 and straight line shaker 2 on sieve
It connects, the mine end of unloading of belt conveyor 3 is connect with ore pocket 4 on sieve, and the belt conveyor 5 under mine mouth and storehouse that goes out of ore pocket 4 connects
It connects, the volume of the ore pocket 4 is designed by meeting storage the pre- magnetic concentrate dry mine amount of coarse grain 24 hours, is transported using belt conveyor
Defeated, system is more stable and reliable, efficiently avoid the on-the-sieve material of straight line shaker raised by pump send then particle it is thicker, transport path compared with
Long, pump wears larger problem；Belt conveyor 5 unloads mine end and connect with the feed port of ball mill 6 under storehouse, the ore discharge of ball mill 6
Mouth is connect with pump pond 10, the feed port for going out mine mouth and pumping I 11 and defeated pipe I and cyclone group I 7 to mine by cyclone in pump pond 10
It is connected, mine outlet is connect with stirred tank 9 under the sieve of straight line shaker 2, and the volume of stirred tank 9 is small by the lower ore pulp amount 2 of storage sieve is met
When design, the mine mouth that goes out of stirred tank 9 is connected to mine pump II 12 and defeated pipe II with the feed port of cyclone group II 8 by cyclone
It connects, the overflow port of cyclone group I 7 and cyclone group II 8 is connect with follow-up process equipment, cyclone group I 7 and cyclone group II 8
Sand setting connect with the feed port of ball mill 6 by chute.
Cyclone group I 7 and cyclone group II 8 of the present invention are arranged on the same cyclone group platform, same structure
It is circlewise distributed, shares a riffler 14 and overflow launder 15.
The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification technique in a kind of HPGR process of the present invention, which is characterized in that including
The following steps:
Undersize material of the granularity of high pressure roller mill closed-circuit screen 13 greater than 3mm feeds the pre- magnetic separator 1 of coarse grain wet type, coarse grain wet type premagnetization
The pre- magnetic concentrate of machine 1 is selected to feed straight line shaker 2, oversize of the granularity of straight line shaker 2 greater than 0.5mm is sieved upper belt conveyor
3 feed ore pocket 4, and the pre- magnetic concentrate of the coarse fraction of ore pocket 4 feeds ball mill 6 through belt conveyor 5 under storehouse, ball mill 6
Ore discharge feeds pump pond 10, feeds cyclone group I 7 to mine pump I 11 and defeated pipe I using cyclone and carries out graded operation；
Undersize of the granularity of straight line shaker 2 less than 0.5mm feeds stirred tank 9, using cyclone to mine pump II 12 and defeated mine
Pipe II feeds cyclone group II 8 and carries out graded operation；The overflow merging of cyclone group I 7 and cyclone group II 8 feeds rear afterflow
The sand setting of journey, cyclone group I 7 and cyclone group II 8 feeds ball mill 10 by chute 9 together；Wherein ball mill 10 and eddy flow
Device group I 7 forms closed circuit grinding, and the sand setting of cyclone group I 7 is the sand return of ball mill 6；Cyclone group II 8 is the preparatory of ball mill 6
Classifying equipoment, the sand setting of cyclone group II 8 and the pre- magnetic concentrate composition ball mill 6 of the coarse fraction of ore pocket 5 give mine.
Since the present invention increases ore grinding storehouse and stirred tank in HPGR process, by the closed circuit sieving circuit of high pressure roller-wet type
Disconnected with grind grading process, such as the maintenance down in 2 hours, in stirred tank storage ore pulp can guarantee grind grading process according to
It so runs well, such as 2 hours~24 hours maintenance downs still are able to then by increasing belt conveyor mine-supplying quantity under storehouse
The full production for guaranteeing grind grading process, avoids the significantly underproduction.Straight line shaker undersize material particle form, granularmetric composition,
Iron mineral liberation degree of minerals is different from ball mill ore discharging, and undersize material feeds corresponding cyclone group with ball mill ore discharging respectively, can
Running parameter is adjusted separately according to respective material properties expense, management easy to produce optimizes production target.The on-the-sieve material of straight line shaker
Particle is thicker if being raised and being sent by pump, and transport path is longer, and pump abrasion is larger, and using Leather Belt Conveyance, system is more stable
Reliably.
Claims (5)
1. the pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system in a kind of HPGR process, which is characterized in that including coarse grain wet type
Pre- magnetic separator, straight line shaker, belt conveyor, ball mill, pump pond, cyclone give mine pump under belt conveyor, ore grinding storehouse, storehouse on sieve
I, cyclone group I, stirred tank, cyclone pump II and cyclone group II to mine,
The feed inlet and high pressure roller mill closed-circuit screen of the pre- magnetic separator of coarse grain wet type sieve the outlet of lower mine and connect, coarse grain wet type premagnetization
It selects the concentrate of machine to export to be connected with straight line shaker, mine outlet connection on the sieve of belt conveyor and straight line shaker on sieve, belt on sieve
The mine end of unloading of conveyer is connect with ore pocket, and the mine mouth that goes out of ore pocket is connect with belt conveyor under storehouse, belt conveyor under storehouse
The feed port for unloading mine end and ball mill connects, and the gape of ball mill is connect with pump pond, pump the mine mouth out in pond by cyclone to
Mine pump I and defeated pipe I are connected with the feed port of cyclone group I, and mine outlet is connect with stirred tank under the sieve of straight line shaker, stirred tank
The mine mouth that goes out be connected to mine pump II and defeated pipe II with the feed port of cyclone group II by cyclone, cyclone group I and revolve
The overflow port of stream device group II is connect with follow-up process equipment, and the sand setting of cyclone group I and cyclone group II passes through chute and ball milling
The feed port of machine connects.
2. the pre- magnetic separation of coarse grain wet type and grind grading closed-circuit system, feature exist in HPGR process according to claim 1
In the cyclone group I and cyclone group II are arranged on the same cyclone group platform, equally constitute annular distribution, altogether
With a riffler and overflow launder.
3. the pre- magnetic separation of coarse grain wet type and grind grading closed-circuit system, feature exist in HPGR process according to claim 1
In the screen size of the high pressure roller closed-circuit screen is 3mm, and the screen size of the straight line shaker is 0.5mm.
4. closing system according to the pre- magnetic separation of coarse grain wet type in HPGR process described in right 1 and grind grading, which is characterized in that described
The volume of ore pocket is designed by meeting storage the pre- magnetic concentrate dry mine amount of coarse grain 24 hours, and the volume of stirred tank, which is pressed, meets storage sieve
It designs within lower ore pulp amount 2 hours.
5. the pre- magnetic separation of coarse grain wet type and closed circuit grinding classification technique in a kind of HPGR process, characterized in that it comprises the following steps:
Undersize material of the granularity of high pressure roller mill closed-circuit screen greater than 3mm feeds the pre- magnetic separator of coarse grain wet type, the pre- magnetic separation of coarse grain wet type
The pre- magnetic concentrate of machine feeds straight line shaker, and oversize of the granularity of straight line shaker greater than 0.5mm is sieved upper belt conveyor and fed
Ore pocket, the pre- magnetic concentrate of the coarse fraction of ore pocket feed ball mill through belt conveyor under storehouse, and the ore discharge of ball mill feeds pump
Pond feeds cyclone group I to mine pump I and defeated pipe I using cyclone and carries out graded operation；
Undersize of the granularity of straight line shaker less than 0.5mm feeds stirred tank, using cyclone to mine pump II and defeated pipe II
It feeds cyclone group II and carries out graded operation；The overflow merging of cyclone group I and cyclone group II feeds follow-up process, cyclone
The sand setting of group I and cyclone group II feeds ball mill by chute together；Wherein ball mill and cyclone group I form closed circuit mill
Mine, the sand setting of cyclone group I are the sand return of ball mill；Cyclone group II is the pre-classification equipment of ball mill, cyclone group II
Sand setting and ore pocket the pre- magnetic concentrate of coarse fraction constitute ball mill to mine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462723.6A CN110102403A (en) | 2019-05-30 | 2019-05-30 | The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system and technique in HPGR process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462723.6A CN110102403A (en) | 2019-05-30 | 2019-05-30 | The pre- magnetic separation of coarse grain wet type and closed circuit grinding classification system and technique in HPGR process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170001A (en) * | 2020-09-18 | 2021-01-05 | 滦平建龙矿业有限公司 | Ultra-lean magnetite high-pressure roller mill-relaxation sieve combined pretreatment system and process |
| CN113058729A (en) * | 2021-03-26 | 2021-07-02 | 中冶北方（大连）工程技术有限公司 | Closed ore bin control system of high-pressure roller mill |
| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112170001A (en) * | 2020-09-18 | 2021-01-05 | 滦平建龙矿业有限公司 | Ultra-lean magnetite high-pressure roller mill-relaxation sieve combined pretreatment system and process |
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| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
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Application publication date: 20190809 |