CN101695685B - Big-open-loop small-closed-loop mud flotation method of oxidized ore - Google Patents
Big-open-loop small-closed-loop mud flotation method of oxidized ore Download PDFInfo
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- CN101695685B CN101695685B CN200910095099.7A CN200910095099A CN101695685B CN 101695685 B CN101695685 B CN 101695685B CN 200910095099 A CN200910095099 A CN 200910095099A CN 101695685 B CN101695685 B CN 101695685B
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- 238000005188 flotation Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 abstract description 17
- 238000011084 recovery Methods 0.000 abstract description 10
- 239000002002 slurry Substances 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002000 scavenging effect Effects 0.000 abstract 2
- 239000008396 flotation agent Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 235000010755 mineral Nutrition 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 239000011787 zinc oxide Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 2
- 239000004110 Zinc silicate Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 239000012991 xanthate Substances 0.000 description 2
- 239000011667 zinc carbonate Substances 0.000 description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 description 2
- 235000004416 zinc carbonate Nutrition 0.000 description 2
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 2
- 229910001656 zinc mineral Inorganic materials 0.000 description 2
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 2
- 235000019352 zinc silicate Nutrition 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- KTGDBUHGMFATFV-UHFFFAOYSA-N zinc lead(2+) oxygen(2-) Chemical compound [O--].[O--].[Zn++].[Pb++] KTGDBUHGMFATFV-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a big-open-loop small-closed-loop mud flotation method of an oxidized ore. In the method, during the flotation of the oxidized ore, rough concentration and primary concentration adopt open-circuit flotation and other follow-up flotation operation adopts a normal process. As both the rough concentration and the primary concentration adopt open-circuit flotation without returning middlings, gradual accumulation of slurry in the process is reduced greatly, the interference in the flotation from slurry and the influences of the slurry on the flotation are effectively reduced and the recovery rate of concentrate is guaranteed. A scavenging circuit and a follow-up fine scavenging circuit adopt a normally closed circuit ore dressing flow, the quality of concentrate is guaranteed, and the ore dressing index is improved greatly. In the method, the traditional flotation agent system is not required to be changed, but only the reconnection of ore pulp pipes in the traditional flotation flow is required. And in the method, the operation is convenient, the production cost is low, the quality of the concentrate is high and the recovery rate of the concentrate is high.
Description
Technical field
The present invention relates to a kind of big-open-loop small-closed-loop mud flotation method of oxidized, a kind of beneficiation method that namely adopts in the full mud flotation of oxide ore belongs to the technique of preparing field.
Background technology
Along with the exhaustion of resource, we will have to sort more some low-grade unmanageable oxidized ores, as: zinc oxide lead ore, cupric oxide ore, scheelite etc.The common method of processing the type oxidized ore mainly is gravity treatment and method for floating, and the sorting index of flotation is better than gravity treatment usually.Flotation comprises full mud flotation and desliming flotation.But the type ore is mostly serious in the occurring in nature weathering, primary slime is many, ore properties is special in addition, as frangible, when ore grinding, generally also can produce much more extremely secondary slimes, as to its full mud flotation, mineral processing index is non-constants all generally, except the gained concentrate grade is low, can't become product, the rate of recovery generally also only about 50%; As adopt the desliming flotation, though concentrate grade increases, the rate of recovery is often lower.
Summary of the invention
The purpose of this invention is to provide a kind of big-open-loop small-closed-loop mud flotation method of oxidized, the method can be carried out ore dressing effectively, improves the mineral processing index of difficult oxide ore, develops to greatest extent difficult oxide ore.
Method of the present invention is in the full mud floatation process of oxide ore, adopts the dressing method of " large open circuit, small-closed-loop ", effectively reduces sludge to the impact of flotation, and the rate of recovery is reached more than 85%.
The technical solution adopted for the present invention to solve the technical problems is: in full mud floatation process, roughly select and for the first time selected open circuit technological process, the i.e. large open circuit of all adopting; Scan operation and only scan the operation inner loop at all, the selected operation of other time (or claiming essence to scan) is also only at itself selected operation inner loop, i.e. small-closed-loop.
The described number of times of roughly selecting can be once, also can be secondary or repeatedly.
Described full mud flotation pulp density is 20～45%, and optium concentration is 38 ~ 42%.
Described floating agent can adopt the corresponding System of Flotation Reagent of prior art according to ore properties.
Describedly scanning loop and essence to scan the loop can be once to sort, also can be the conventional closed circuit beneficiation flowsheet that repeatedly sorts.
The present invention has following advantages and effect: because in full mud floatation process, roughly select and the ore dressing of for the first time selected all employings open circuit, return without chats, can greatly reduce the progressively accumulation of sludge in the flow process, effectively reduce interference and the impact of sludge on sorting, can take and early take, guarantee the rate of recovery of concentrate.And scan in the loop scanning loop and follow-up essence, then adopt conventional closed circuit beneficiation flowsheet, guaranteed concentrate grade.Mineral processing index is improved greatly.The inventive method need not to change existing System of Flotation Reagent, and the again connection that only needs to carry out ore slurry pipeline in existing flotation flowsheet gets final product, and easy to operate, production cost is low, and concentrate grade and the rate of recovery are high.
Description of drawings
Fig. 1 is the flow chart of method of the present invention.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1
Certain low-grade zinc oxide ore, raw ore slurry contains mud (less than 10 microns) about 40%, contains zinc about 5%, and zinc mineral is mainly take zinc carbonate, zinc silicate, ferrite and marionite as main, zinc oxygenation efficiency 60% ~ 95%, gangue mineral mainly are the carbonate minerals such as mica and calcite.Adopt full mud flotation, use the regime of agent of sulfuration---xanthate ore dressing or sulfuration---fatty amine method ore dressing.When selected pulp density is 40% left and right sides, at first once open a way and roughly select, the froth pulp of roughly selecting is once opened a way selected, final concentrate, product then enters three times and scans in the groove of roughly selecting, the froth pulp of scanning returns successively, form closed circuit, scan and carry out twice essence after product merges in the groove of 1 foam and primary cleaning and scan, get final concentrate, product then returns and scans operation and select in the groove.Can obtain the zinc oxide concentrate grade greater than 30%, the rate of recovery is greater than 86% mineral processing index.
Embodiment 2
The zinc oxide ore of this instance processes contains zinc only about 2%, oxygenation efficiency 98%.Zinc mineral is mainly take zinc carbonate, zinc silicate, ferrite and marionite as main, and gangue mineral mainly is the quartzy silicate mineral that waits.Adopt full mud flotation, use the regime of agent of sulfuration---xanthate ore dressing or sulfuration---fatty amine method ore dressing.Be about 37% at selected pulp density, during mog 95%-200 order, ore pulp contains mud (less than 10 microns) about 27%, at first once opens a way and roughly selects, the froth pulp of roughly selecting is once opened a way selected, final concentrate, product then enters three times and scans in the groove of roughly selecting, the froth pulp of scanning returns successively, form closed circuit, scan and carry out once essence after product merges in the groove of 1 foam and primary cleaning and scan, get final concentrate, product then returns and scans operation and select in the groove.Can obtain the zinc oxide concentrate grade greater than 35%, the rate of recovery is greater than 93% mineral processing index.
Embodiment 3
This example relates to the full mud flotation beneficiation of low-grade gneiss type scheelite.About head grade 0.3%, in the situation that use conventional Scheelite Flotation medicament, once open a way and roughly select, once open circuit is scanned, then directly throw tail, the gained rough concentrate carry out five times closed circuit selected, three times essence is scanned, can obtain concentrate grade greater than 60%, the rate of recovery is greater than 82% mineral processing index.
Claims (8)
1. big-open-loop small-closed-loop mud flotation method of oxidized, it is characterized in that: in full mud floatation process, roughly select and the technological process of for the first time selected all employings open circuit, scan operation and only scan the operation inner loop at all, the selected operation of other time is also only in selected operation inner loop itself;
Described full mud flotation pulp density is 20～45%.
2. big-open-loop small-closed-loop mud flotation method of oxidized as claimed in claim 1, it is characterized in that: roughly selecting number of times is once.
3. big-open-loop small-closed-loop mud flotation method of oxidized as claimed in claim 1, it is characterized in that: roughly selecting number of times is secondary.
4. big-open-loop small-closed-loop mud flotation method of oxidized as claimed in claim 1, it is characterized in that: roughly selecting number of times is repeatedly.
5. such as claim 1 or 4 described big-open-loop small-closed-loop mud flotation method of oxidizeds, it is characterized in that: described full mud flotation slip optium concentration is 38～42%.
6. such as claim 1 or 4 described big-open-loop small-closed-loop mud flotation method of oxidizeds, it is characterized in that: described floating agent can adopt the corresponding System of Flotation Reagent of prior art according to ore properties.
7. such as claim 1 or 4 described big-open-loop small-closed-loop mud flotation method of oxidizeds, it is characterized in that: describedly scan operation and selected operation is the beneficiation flowsheet that once sorts.
8. such as claim 1 or 4 described big-open-loop small-closed-loop mud flotation method of oxidizeds, it is characterized in that: describedly scan operation and essence to scan operation be the conventional closed circuit beneficiation flowsheet that repeatedly sorts.
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| CN101695685B true CN101695685B (en) | 2013-03-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813546A (en) * | 2019-11-28 | 2020-02-21 | 昆明理工大学 | Flotation method of high-calcium-magnesium type oxidized and vulcanized mixed copper ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101920225B (en) * | 2010-08-20 | 2013-04-17 | 株洲市兴民科技有限公司 | Flotation method and flotation system of whole-course open circuit floatation for concentrate slurry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958168A (en) * | 2005-11-01 | 2007-05-09 | 中南大学 | Gradient floatation method for bauxite |
| CN101081378A (en) * | 2007-05-23 | 2007-12-05 | 华锡集团车河选矿厂 | Novel technics of rough-flotation high concentration high-efficient flotation |
| CN101417260A (en) * | 2008-12-05 | 2009-04-29 | 长沙有色冶金设计研究院 | High iron bauxite dressing method |
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- 2009-10-26 CN CN200910095099.7A patent/CN101695685B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958168A (en) * | 2005-11-01 | 2007-05-09 | 中南大学 | Gradient floatation method for bauxite |
| CN101081378A (en) * | 2007-05-23 | 2007-12-05 | 华锡集团车河选矿厂 | Novel technics of rough-flotation high concentration high-efficient flotation |
| CN101417260A (en) * | 2008-12-05 | 2009-04-29 | 长沙有色冶金设计研究院 | High iron bauxite dressing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813546A (en) * | 2019-11-28 | 2020-02-21 | 昆明理工大学 | Flotation method of high-calcium-magnesium type oxidized and vulcanized mixed copper ore |
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