CN107262276A - A kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique - Google Patents
A kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique Download PDFInfo
- Publication number
- CN107262276A CN107262276A CN201710561989.7A CN201710561989A CN107262276A CN 107262276 A CN107262276 A CN 107262276A CN 201710561989 A CN201710561989 A CN 201710561989A CN 107262276 A CN107262276 A CN 107262276A
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- CN
- China
- Prior art keywords
- dry type
- useless
- iron ore
- hermetically sealed
- magnetic iron
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B03C1/30—Combinations with other devices, not otherwise provided for
Abstract
Useless technique is thrown the invention discloses a kind of hermetically sealed dry type of fine fraction magnetic iron ore, the technique comprises the following steps：A, screen out 5mm magnetic iron ore fine ores in magnetic iron ore after broken, drying, break up after screw dry magnetic separator sent into by conveying worm carry out hermetically sealed dry type pre-selection and throw useless operation, throw useless yield, grade to be controlled by screw dry magnetic separator rotating speed, dry type preliminary rejection grade meets qualified tailings grade requirement；B, the pre-selection of hermetically sealed dry type throw useless rear preliminary rejection and send into tailing bin by conveying worm, and pre- concentrate selection delivers to mill by conveying worm and selects system to handle.The present invention carries out dry type to 5mm magnetic iron ores and throws useless processing, has prevented barren rock, country rock and has selected system into mill, prevents that ore from dishing out the generation of phenomenon with barren rock, reduces follow-up mill and hanks this generation, solves the problem of irony phyllite, jasper influence sorting index；Efficiency high is preselected, it is good to throw useless effect, can control to throw not containing iron ore in barren rock, it is to avoid the wasting of resources.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless work
Skill.
Background technology
The rate of dilution is about 3% or so when magnetic iron ore is had an opencast mining of, and the rate of dilution is about 8% during underground mining, that is to say, that extraction
Country rock containing 3-8% in ore ,+5mm lump ores are preselected using magnetic pulley dry type, and country rock can be dished out, and -5mm fine ores are used
Magnetic pulley, the pre-selection of jigging dry type do not reach the index for throwing useless rate more than 80%, and one is the moisture that -5mm fine ores contain 7% or so,
It has impact on dry separation index；Two be that country rock and magnetic iron ore difference in specific gravity are small, and jigging dry separation effect is undesirable.Do not preselect and result in country rock and enter
Enter mill and select system so that mill selects cost increase；Preselect by force, part ore can be caused together to be dished out with country rock, cause resource quilt
Waste.It concurrently there are -5mm fine fraction fine ores magnetic pulley, jigging dry type and preselect the problem of dust is big.
The content of the invention
The invention aims to solve technical problem present in prior art to throw that useless effect is good, throw there is provided one kind
Useless efficiency high, can prevent barren rock, country rock and select the hermetically sealed dry type of the fine fraction magnetic iron ore of system to throw useless technique into mill.
In order to achieve the above object, the present invention uses following technical scheme：A kind of hermetically sealed dry type of fine fraction magnetic iron ore is thrown
Useless technique, the technique comprises the following steps：
A, screen out -5mm magnetic iron ore fine ores after broken in magnetic iron ore, drying, break up after spiral shell is sent into by conveying worm
Revolve dry-type magnetic extractor and carry out the hermetically sealed useless operation of dry type pre-selection throwing, throw useless yield, grade and controlled by screw dry magnetic separator rotating speed,
Dry type preliminary rejection grade meets qualified tailings grade requirement；
B, the pre-selection of hermetically sealed dry type throw useless rear preliminary rejection and send into tailing bin by conveying worm, and pre- concentrate selection is by conveying worm
Delivering to mill selects system to handle.
The present invention has the advantages that compared with the prior art：The present invention is sieved from broken rear magnetic iron ore first
Go out -5mm magnetic iron ore fine ores, because -5mm magnetic iron ore fine ores contain 7% or so moisture and 8-12% barren rock and country rock, magnetic is slided
Wheel, jigging dry type pre-selection effect are poor, throw in the barren rock that gives up still containing 50% or so iron ore, drying, break up after processing, ore
The middle crystallization water has been removed, and fine ore relatively dissipates, and suitable screw dry magnetic separator dry type pre-selection throws useless, and p- 5mm magnetic iron ores are done
Formula throws useless processing, has prevented barren rock, country rock and has selected system into mill, prevents that ore from dishing out the generation of phenomenon with barren rock, is reduced subsequently
Mill hanks this generation, the problem of solving irony phyllite, jasper influence sorting index；Efficiency high is preselected, the useless effect of throwing is good,
It can control to throw not contain iron ore in barren rock, it is to avoid the wasting of resources.Meanwhile, the present invention drying, break up after magnetic iron ore
Fine ore sends into screw dry magnetic separator progress dry type by conveying worm and throws useless operation, and barren rock, country rock after throwing is useless etc. preselects tail
Ore deposit is still respectively fed to tailing bin by conveying worm with pre- concentrate selection and mill selects system, and conveying, dry separation process are hermetically sealed, no powder
Dirt is discharged, and meets environmental requirement.In addition, the present invention carries out hermetically sealed dry type pre-selection using screw dry magnetic separator throws useless operation,
Screw dry magnetic separator be a kind of hermetically sealed, revolution speed of screw by the adjustable dry type pre-selection device of VFC, suitable fine fraction is not
Tacky magnetic material throws useless operation.The useless useless yield of operation throwing, taste are thrown in the hermetically sealed dry type pre-selection of the present invention can be by screw dry
Magnetic separator adjustment of rotational speed determines that dry type preliminary rejection grade meets qualified tailings grade requirement.
Brief description of the drawings
Fig. 1 is process flow diagram of the invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Wine steel grade is subjected to the hermetically sealed useless technique of dry type throwing for 32% magnetic iron ore fine ore, comprised the following steps：
A, screen out -5mm magnetic iron ore fine ores after broken in magnetic iron ore, drying, break up after spiral shell is sent into by conveying worm
Revolve dry-type magnetic extractor and carry out the hermetically sealed useless operation of dry type pre-selection throwing, throw useless yield, grade and controlled by screw dry magnetic separator rotating speed,
Obtain throwing useless yield 10%, throw the preliminary rejection of waste product position 3%, by being detected to throwing useless rear magnetic iron ore laboratory dry separation, containing barren rock
Only 0.2%, dry type preliminary rejection grade meets qualified tailings grade requirement.
B, the pre-selection of hermetically sealed dry type throw useless rear preliminary rejection and send into tailing bin by conveying worm, and pre- concentrate selection is by spiral transferring
Sending machine to deliver to mill selects system to handle.
Claims (1)
1. a kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique, it is characterised in that the technique comprises the following steps：
A, screen out -5mm magnetic iron ore fine ores after broken in magnetic iron ore, drying, break up after spiral shell is sent into by conveying worm
Revolve dry-type magnetic extractor and carry out the hermetically sealed useless operation of dry type pre-selection throwing, throw useless yield, grade and controlled by screw dry magnetic separator rotating speed,
Dry type preliminary rejection grade meets qualified tailings grade requirement；
B, the pre-selection of hermetically sealed dry type throw useless rear preliminary rejection and send into tailing bin by conveying worm, and pre- concentrate selection is by conveying worm
Delivering to mill selects system to handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561989.7A CN107262276A (en) | 2017-07-11 | 2017-07-11 | A kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561989.7A CN107262276A (en) | 2017-07-11 | 2017-07-11 | A kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107262276A true CN107262276A (en) | 2017-10-20 |
Family
ID=60072539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710561989.7A Pending CN107262276A (en) | 2017-07-11 | 2017-07-11 | A kind of hermetically sealed dry type of fine fraction magnetic iron ore throws useless technique |
Country Status (1)
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| CN (1) | CN107262276A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100334295B1 (en) * | 1999-11-30 | 2002-05-03 | 곽영훈 | Dry Purification Method for Removing Iron and Titanium Oxide from Kaoline |
| CN101623670A (en) * | 2009-07-27 | 2010-01-13 | 山东科力华电磁设备有限公司 | Technique for extracting iron ore concentrate powder from sand iron mine of gobi desert |
| CN102228889A (en) * | 2010-07-09 | 2011-11-02 | 鞍钢集团矿业公司 | Novel magnetite two-stage closed-circuit and two-stage pre-selection crushing process |
| CN103041921A (en) * | 2012-12-20 | 2013-04-17 | 山东科力华电磁设备有限公司 | Method for extracting iron ore concentrate under anhydrous condition |
| CN103146911A (en) * | 2013-03-27 | 2013-06-12 | 西南科技大学 | Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals |
| CN105797847A (en) * | 2016-03-16 | 2016-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for removing strongly magnetic tailings from iron ore combined tailings through dry separation |
| CN106000638A (en) * | 2016-05-20 | 2016-10-12 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for extracting iron from comprehensive tailings of refractory iron ores |
-
2017
- 2017-07-11 CN CN201710561989.7A patent/CN107262276A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100334295B1 (en) * | 1999-11-30 | 2002-05-03 | 곽영훈 | Dry Purification Method for Removing Iron and Titanium Oxide from Kaoline |
| CN101623670A (en) * | 2009-07-27 | 2010-01-13 | 山东科力华电磁设备有限公司 | Technique for extracting iron ore concentrate powder from sand iron mine of gobi desert |
| CN102228889A (en) * | 2010-07-09 | 2011-11-02 | 鞍钢集团矿业公司 | Novel magnetite two-stage closed-circuit and two-stage pre-selection crushing process |
| CN103041921A (en) * | 2012-12-20 | 2013-04-17 | 山东科力华电磁设备有限公司 | Method for extracting iron ore concentrate under anhydrous condition |
| CN103146911A (en) * | 2013-03-27 | 2013-06-12 | 西南科技大学 | Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals |
| CN105797847A (en) * | 2016-03-16 | 2016-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for removing strongly magnetic tailings from iron ore combined tailings through dry separation |
| CN106000638A (en) * | 2016-05-20 | 2016-10-12 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for extracting iron from comprehensive tailings of refractory iron ores |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |