CN102357403A - New magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore - Google Patents
New magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore Download PDFInfo
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- CN102357403A CN102357403A CN2011102270641A CN201110227064A CN102357403A CN 102357403 A CN102357403 A CN 102357403A CN 2011102270641 A CN2011102270641 A CN 2011102270641A CN 201110227064 A CN201110227064 A CN 201110227064A CN 102357403 A CN102357403 A CN 102357403A
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Abstract
The invention relates to a new magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore. The technology comprises the processes of ore grinding, ground ore grading and secondary grading and a process of conveying the coarse secondary grading product to a reselection process. The technology is characterized in that: the fine secondary grading product is conveyed to a weak magnetic machine, the tailings of the weak magnetic machine are fed into a permanent magnetic machine, the ore concentrate of the weak magnetic machine is fed into a secondary concentrator, the ore concentrate of the permanent magnetic machine is fed into the secondary concentrator, the tailings of the permanent magnetic machine is fed into a primary concentrator, and the tailings of a strong magnetic machine are abandoned; the mixed ore concentrate of the weak magnetic ore concentrate, the permanent magnetic ore concentrate and the strong magnetic ore concentrate is fed into the secondary concentrator; the bottom flow of the secondary concentrator, namely the ore concentrate, is conveyed to an anionic reverse flotation process; and the flooding of the secondary concentrator is fed into a sewage treatment system. The technology is reasonable in configuration, reduces the loss of the fine hematite ore, improves the recovery rate of iron, provides a reasonable feeding condition for the sorting technology of the next step, and realizes emission reduction and synergy.
Description
Technical field
The present invention relates to the mine ore dressing field of engineering technology, the tail new technology is thrown in particularly a kind of microfine lean hematite ore magnetic separation upgrading.
Background technology
Along with the lot of consumption of mine resources, the poor thin hydridization degree of ore obviously increases, and supplies the ore deposit condition harsh day by day; to sort difficulty and strengthen; distinct issues are that the tailings grade of stage (continuously) ore grinding, thickness grading, gravity treatment, magnetic separation-anion reverse floatation technological process fine fraction raises, and make that the tailings grade of whole flow process is higher, is example with the eastern Anshan Iron stone of the difficult choosing of Anshan Area; its strong magnetic tail ore deposit grade often reaches more than 17%; the flotation tailing grade reaches more than 24%, and comprehensively tailings grade reaches more than 17%, and metal loss is heavier.The one of the main reasons that causes mine tailing to run off is that particulate flow process " weak magnetic-strong magnetic " upgrading process for discarding tailings effect before flotation is relatively poor in the existing processes, and magnetic field gradient is little; it is not enough to sort the degree of depth; the concentrate grade of weak magnetic is 50-55%, and the tailings grade of weak magnetic is 25-29%, and the concentrate grade of strong magnetic is 38-43%; the tailings grade of strong magnetic is 14-18%; it is bigger to cause the high intensity magnetic separation operation to sort pressure, and the microfine iron minerals that in ore grinding, produce in a large number operation before flotation just enters into mine tailing, causes metal loss serious.Have select factory also once to adopt " weak magnetic-middle magnetic-strong magnetic " tail is thrown in the technology upgrading, but the middle magnetic operation or the problem of equipment itself, the magnetic architecture is unreasonable, magnetic field intensity and gradient are not enough; Or technological parameter is unreasonable, causes this operation to be performed practically no function, and fails to bring into play due effect; Make strong magnetic burden heavier; Be integrated artistic structure and unreasonable allocation in essence, cause magnetic separation upgrading throwing tail effect bad, metal loss is heavier.
Summary of the invention
The present invention provides a kind of microfine lean hematite ore magnetic separation upgrading to throw the tail new technology; Its objective is the tailings grade that reduces lean hematite ore stage (continuously) ore grinding, thickness grading, gravity treatment, magnetic separation-anion reverse floatation technology; Improve metal recovery rate, realize reducing discharging synergy.
The objective of the invention is to realize through following technical proposals:
The tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading of the present invention, comprises ore grinding → grind grading → secondary classification,
The coarse grain product of secondary classification is delivered to the gravity treatment operation, it is characterized in that the magnetic separation upgrading that particulate product to said secondary classification carries out before the anion reverse floatation technology throws the tail operation, and for flotation operation provides reasonably to the ore deposit condition, concrete steps are following:
1) with the grade of secondary classification be 28-32%, the particulate product of granularity-200 order content percentage by weight more than 90% send into weak magnetic machine; The grade that weak magnetic machine is selected is that 25-29% weak magnetic tail ore deposit feeds permanent magnetic motor; The grade that weak magnetic machine is selected is that 50-55% weak magnetic machine concentrate feeds the secondary concentration machine
2) grade selected of permanent magnetic motor is that 42-47% permanent magnetic motor concentrate feeds the secondary concentration machine, and the grade that permanent magnetic motor is selected is that 13-18% permanent magnetic motor mine tailing feeds the once concentration machine,
3) concentration is that 35%-40% once concentration machine underflow feeds strong magnetic machine, and the overflow of once concentration machine feeds sewage disposal system,
4) grade selected of strong magnetic machine is that 20-25% strong magnetic machine concentrate feeds the secondary concentration machine, and the grade that strong magnetic machine is selected is that 8-10% strong magnetic tail ore deposit is abandoned,
5) concentration is that 50-65% secondary concentration machine underflow is concentrate and sends into anion reverse floatation technology, and the overflow of secondary concentration machine feeds sewage disposal system.
Described weak magnetic machine is a permanent-magnet drum type magnetic separator, and its field intensity is 1600-2400Oe.
Described permanent magnetic motor is a YCT type permanent magnet high gradient magnetic separator, and its field intensity is 4000-7000Oe.
Described strong magnetic machine is the strong magnetic machine of SLON upright ring pulsating high gradient, and its field intensity is 6000-10000Oe.
The characteristics that the tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading of the present invention are:
Particulate product after the secondary classification is fed the low intensity magnetic separation operation, and between low intensity magnetic separation, high intensity magnetic separation operation, increase the high-gradient magnetic separation operation, quote YCT novel permanent magnetic high gradient magnetic separator; With existing drum magnetic separator and the strong magnetic machine of SLON reasonable disposition, making grade is that particulate lean hematite ore mine tailing after one section low intensity magnetic separation of 28-32% reduces to 24-29%, and operation sorts the back mine tailing and reduces to 13-18% through high-gradient magnetic separation again; After passing through the magnetic separator operation again, the grade in strong magnetic tail ore deposit reduces to 8-10%, through above substep magnetic separation; Make the hematite-limonite thing of strongly magnetic mineral, medium magnetic mineral and weak magnetic obtain high efficiente callback successively, each operation amount of metal distributes rationally, has effectively improved technology and has sorted the degree of depth; Strengthened the recovery of technology to the microfine lean hematite; That has improved subsequent job gives ore deposit condition and sorting result, can reduce by 1-1.5 percentage points of comprehensive tailings grades, and metal recovery rate improves 2-3 percentage points; Realize reducing discharging synergy, remarkable in economical benefits.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Below in conjunction with the description of drawings specific embodiment of the present invention.
As shown in Figure 1, the tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading of the present invention, comprises ore grinding → ore grinding branch
The classification of level → secondary; The coarse grain product of secondary classification is delivered to the gravity treatment operation; It is characterized in that the magnetic separation upgrading that particulate product to said secondary classification carries out before the anion reverse floatation technology throws the tail operation, for flotation operation provides reasonably to the ore deposit condition, concrete steps are following:
1) with the grade of secondary classification be 28-32%, the particulate product of granularity-200 order content percentage by weight more than 90% send into weak magnetic machine; The grade that weak magnetic machine is selected is that 25-29% weak magnetic tail ore deposit feeds permanent magnetic motor; The grade that weak magnetic machine is selected is that 50-55% weak magnetic machine concentrate feeds the secondary concentration machine
2) grade selected of permanent magnetic motor is that 42-47% permanent magnetic motor concentrate feeds the secondary concentration machine, and the grade that permanent magnetic motor is selected is that 13-18% permanent magnetic motor mine tailing feeds the once concentration machine,
3) concentration is that 35%-40% once concentration machine underflow feeds strong magnetic machine, and the overflow of once concentration machine feeds sewage disposal system,
4) grade selected of strong magnetic machine is that 20-25% strong magnetic machine concentrate feeds the secondary concentration machine, and the grade that strong magnetic machine is selected is that 8-10% strong magnetic tail ore deposit is abandoned,
5) concentration is that 50-65% secondary concentration machine underflow is concentrate and sends into anion reverse floatation technology, and the overflow of secondary concentration machine feeds sewage disposal system.
Described weak magnetic machine is a permanent-magnet drum type magnetic separator, and its field intensity is 1600-2400Oe.
Described permanent magnetic motor is a YCT type permanent magnet high gradient magnetic separator, and its field intensity is 4000-7000Oe.
Described strong magnetic machine is the strong magnetic machine of SLON upright ring pulsating high gradient, and its field intensity is 6000-10000Oe.
The present invention can make the microfine lean hematite effectively upgrading throw tail, reduced loss little, the particulate bloodstone, improve the rate of recovery of iron, for next step sorting process provides reasonably to the ore deposit condition, realize reducing discharging synergy, its remarkable in economical benefits.
Claims (4)
1. the tail new technology is thrown in a microfine lean hematite ore magnetic separation upgrading, comprises ore grinding → grind grading → secondary classification,
The coarse grain product of secondary classification is delivered to the gravity treatment operation, it is characterized in that the magnetic separation upgrading that particulate product to said secondary classification carries out before the anion reverse floatation technology throws the tail operation, and for flotation operation provides reasonably to the ore deposit condition, concrete steps are following:
1) with the grade of secondary classification be 28-32%, the particulate product of granularity-200 order weight percent content more than 90% send into weak magnetic machine; The grade that weak magnetic machine is selected is that 25-29% weak magnetic tail ore deposit feeds permanent magnetic motor; The grade that weak magnetic machine is selected is that 50-55% weak magnetic machine concentrate feeds the secondary concentration machine
2) grade selected of permanent magnetic motor is that 42-47% permanent magnetic motor concentrate feeds the secondary concentration machine, and the grade that permanent magnetic motor is selected is that 13-18% permanent magnetic motor mine tailing feeds the once concentration machine,
3) concentration is that 35%-40% once concentration machine underflow feeds strong magnetic machine, and the overflow of once concentration machine feeds sewage disposal system,
4) grade selected of strong magnetic machine is that 20-25% strong magnetic machine concentrate feeds the secondary concentration machine, and the grade that strong magnetic machine is selected is that 8-10% strong magnetic tail ore deposit is abandoned,
5) concentration is that 50-65% secondary concentration machine underflow is concentrate and sends into anion reverse floatation technology, and the overflow of secondary concentration machine feeds sewage disposal system.
2. the tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading according to claim 1, it is characterized in that described weak magnetic machine is a permanent-magnet drum type magnetic separator, and its field intensity is 1600-2400Oe.
3. the tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading according to claim 1, it is characterized in that described permanent magnetic motor is a YCT type permanent magnet high gradient magnetic separator, and its field intensity is 4000-7000Oe.
4. the tail new technology is thrown in microfine lean hematite ore magnetic separation upgrading according to claim 1, it is characterized in that described strong magnetic machine is the strong magnetic machine of SLON upright ring pulsating high gradient, and its field intensity is 6000-10000Oe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102270641A CN102357403A (en) | 2011-08-09 | 2011-08-09 | New magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore |
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| CN2011102270641A CN102357403A (en) | 2011-08-09 | 2011-08-09 | New magnetic separation, quality promotion and tailing abandon technology for fine lean hematite ore |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934093A (en) * | 2014-03-26 | 2014-07-23 | 长沙矿冶研究院有限责任公司 | Beneficiation method for improving micro-fine particle refractory iron ore flotation ore-concentrate production rate and recovery rate |
| CN105413875A (en) * | 2015-12-16 | 2016-03-23 | 陈均宁 | Flotation method for improving grade of flocculent iron ore concentrate |
| CN108283988A (en) * | 2018-02-09 | 2018-07-17 | 鞍钢集团矿业设计研究院有限公司 | Stage grinding magnetic weight flow processing mixed type iron ore technique |
| CN108355827A (en) * | 2018-02-09 | 2018-08-03 | 鞍钢集团矿业设计研究院有限公司 | Continuous Grinding magnetic weight flow processing mixed type iron ore technique |
| CN108355828A (en) * | 2018-02-09 | 2018-08-03 | 鞍钢集团矿业设计研究院有限公司 | The full permanent magnetism short route of Continuous Grinding handles mixed type iron ore technique |
| CN108672084A (en) * | 2018-05-28 | 2018-10-19 | 黄双智 | A kind of technique and device improving iron ore concentrate slurry concentration |
-
2011
- 2011-08-09 CN CN2011102270641A patent/CN102357403A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 季中林等: "YCG粗粒永磁辊式强磁选机的研制及应用", 《矿业快报》 * |
| 朱格来等: "SLon磁选机在调军台选厂改造前后工艺中的应用", 《金属矿山》 * |
| 袁致涛等: "减少调军台选矿厂反浮选入选量的试验研究", 《金属矿山》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934093A (en) * | 2014-03-26 | 2014-07-23 | 长沙矿冶研究院有限责任公司 | Beneficiation method for improving micro-fine particle refractory iron ore flotation ore-concentrate production rate and recovery rate |
| CN103934093B (en) * | 2014-03-26 | 2016-08-17 | 长沙矿冶研究院有限责任公司 | The beneficiation method of microfine refractory iron ore flotation concentrate productivity and the response rate can be improved |
| CN105413875A (en) * | 2015-12-16 | 2016-03-23 | 陈均宁 | Flotation method for improving grade of flocculent iron ore concentrate |
| CN108283988A (en) * | 2018-02-09 | 2018-07-17 | 鞍钢集团矿业设计研究院有限公司 | Stage grinding magnetic weight flow processing mixed type iron ore technique |
| CN108355827A (en) * | 2018-02-09 | 2018-08-03 | 鞍钢集团矿业设计研究院有限公司 | Continuous Grinding magnetic weight flow processing mixed type iron ore technique |
| CN108355828A (en) * | 2018-02-09 | 2018-08-03 | 鞍钢集团矿业设计研究院有限公司 | The full permanent magnetism short route of Continuous Grinding handles mixed type iron ore technique |
| CN108283988B (en) * | 2018-02-09 | 2020-03-31 | 鞍钢集团矿业设计研究院有限公司 | Process for treating mixed iron ore by stage ore grinding magnetic-gravity flow |
| CN108672084A (en) * | 2018-05-28 | 2018-10-19 | 黄双智 | A kind of technique and device improving iron ore concentrate slurry concentration |
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Application publication date: 20120222 |