CN105013603A - Copper-nickel sulfide ore mineral separation method - Google Patents
Copper-nickel sulfide ore mineral separation method Download PDFInfo
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- CN105013603A CN105013603A CN201510442892.5A CN201510442892A CN105013603A CN 105013603 A CN105013603 A CN 105013603A CN 201510442892 A CN201510442892 A CN 201510442892A CN 105013603 A CN105013603 A CN 105013603A
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- flotation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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Abstract
The invention relates to a copper-nickel sulfide ore mineral separation method, and belongs to the technical field of copper-nickel sulfide ore mineral separation. Recovery of a target product is achieved as much as possible through the method including the steps that flotation is carried out firstly, and recleaning is carried out on flotation tailings after throwing tails through magnetic separation. Fine-grain gangue minerals difficult to treat are removed before a rear section of grinding-flotation, and the recovery rate of the target product is increased. The copper-nickel sulfide ore mineral separation method is easily used industrially.
Description
Technical field
The present invention relates to a kind of beneficiation method of copper nickel sulfide mineral; Belong to copper nickel sulfide mineral technical field of beneficiation.
Background technology
Existing mineral separation method for copper nickel sulfide ore based on flotation, the stage grinding-flotation scheme that typical flow scheme has a section to grind floating scheme, tailing regrind selects again and the stage grinding-flotation scheme etc. that concentrate regrinding selects again.The stage grinding-flotation scheme that maximum Jinchuan Group Co., Ltd of the nickel resources enterprise ore dressing plant of China adopts tailing regrind to select for a long time again sorts.
The key of copper nickel sulfide mineral ore dressing will make efficiently to be separated between sulfide mineral with magnesium silicate mineral.Copper nickel sulfide mineral originates in ultrabasic rock, under the hydrothermal alteration effect of complexity, olivine primary in ultrabasic rock, pyroxene, amphibole alteration can form secondary serpentine, talcum, mica, chlorite etc., make the distinguishing feature of gangue in copper nickel sulfide mineral be containing easily argillization gangue such as quite a large amount of serpentine, chlorite, talcum etc., and multiple magnesium silicate mineral coexist.Wherein serpentine has higher zero point, in the alkalescent ore pulp environment that copper nickel sulfide mineral flotation is conventional, the serpentine sludge of lotus positive electricity on target minreal surface by electrostatic attraction effect cover cap, is suppressed its flotation on the one hand, enters flotation concentrate on the other hand with target minreal; Talcum, chlorite then easily enter sulphide concentrate because of the floatability had in various degree, and result is all make concentrate grade and the rate of recovery be difficult to improve, and makes concentrate content of magnesia be difficult to reduce.Therefore, in the research of copper nickel sulfide mineral flotation at home and abroad and industrial practice, extensive work is how to improve that object sulfide mineral is separated with magnesium silicate gangue is selective, and then improves mineral processing index.Patent of invention " beneficiation method of a CN103736584A high-grade copper-nickel sulphide ore " provides a kind of magnetic-floating beneficiation combined method method being applicable to process high-grade copper nickel sulfide mineral, first by magnetic method, a part of high-quality concentrate is obtained to high-grade raw ore, then adopts floatation to reclaim copper nickel thing further to magnetic tailing.This method is only applicable to process the high-grade raw ore that copper nickel content is high in magnetic product, for the copper nickel sulfide mineral of middle-low grade, and the direct magnetic separation of raw ore, being difficult to obtain high-quality concentrate even cannot enrichment; In addition, adopt three flotation processes to reclaim copper nickel thing respectively for three products such as magnetic concentrate, coarse fraction magnetic tailing and fine fraction magnetic tailings, technological process is also comparatively complicated.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of simple and direct and effectively can process the beneficiation method of copper nickel sulfide mineral, weaken and even eliminate the negative effect of the difficult magnesium silicate Mineral pairs copper nickel sulfide mineral flotation be separated, make copper nickel sulfide mineral resource be able to efficiency utilization.
The beneficiation method of a kind of copper nickel sulfide mineral of the present invention, comprises the steps:
Step one
Primary grinding flotation is carried out to copper nickel sulfide mineral raw ore, obtains concentrate 1, flotation circuit chats and flotation circuit mine tailing; Flotation circuit mine tailing is carried out magnetic separation as magnetic separation raw material, and obtain magnetic concentrate and mine tailing 1, mine tailing 1 abandons; The circulation of flotation circuit middling recurrence place sorts or merges with magnetic concentrate;
Described flotation circuit mine tailing is scan mine tailing for the last time in the flotation circuit of described primary grinding flotation, or scans mine tailing for the last time in the flotation circuit of tailing regrind flotation again;
Step 2
After ore grinding again, flotation is carried out to the magnetic concentrate in step one, obtains concentrate 2 and mine tailing 2; Or
Magnetic concentrate in step one is mixed with flotation circuit chats after ore grinding again, carries out flotation, obtain concentrate 2 and mine tailing 2.
The beneficiation method of a kind of copper nickel sulfide mineral of the present invention; Ore dressing process, generally can adopt repeatedly flotation operation circular treatment; Therefore also flotation circuit chats is just created.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step, levigate for the copper nickel sulfide mineral raw ore particle being-0.074mm to fineness is accounted for 60% ~ 90% of ore quality, enter flotation, flotation can be one section of flotation also can be the stage grinding flotation that tailing regrind selects again, and the floating agent used in flotation comprises sodium carbonate 0-3000 gram of/ton of raw ore, xanthate 40g ~ 400 gram of/ton of raw ore xanthate, butyl ammonium aerofloat 0-200 gram of/ton of raw ore, thiamines ester 0-40 gram of/ton of raw ore.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step 2, after the particle being-0.074mm by mixed material ore grinding to the fineness of magnetic concentrate or itself and flotation circuit chats accounts for 80% ~ 100% of ore grinding raw material gross mass, carry out flotation, obtain concentrate 2 and mine tailing 2.In flotation, the floating agent used comprises sodium carbonate 0-1000 gram of/ton of raw ore, xanthate 10g ~ 150 gram of/ton of raw ore, butyl ammonium aerofloat 0-100 gram of/ton of raw ore, thiamines ester 0-20 gram of/ton of raw ore.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step one, during magnetic separation, controlling magnetic field intensity is 1000-10000 Gauss, is preferably 3000-8000 Gauss, more preferably 3000-6500 Gauss.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, magnetic dressing process both can be the flow process of a magnetic separation, also can be that magnetic roughly selects the magnetic dressing process scanned with magnetic, the magnetic field intensity that the magnetic field intensity that magnetic is scanned is roughly selected higher than magnetic.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, also can adopt with existing floatation process gained mine tailing as raw material; Regrinding and reconcentration after magnetic separation of the present invention and magnetic separation, also can obtain certain effect.
Principle and advantage
The present invention is based on the principle of " can receive and early receive, this is lost and early loses ", reclaim most of target product by first flotation, with the method for magnetic separation, part mine tailing is abandoned to flotation tailing, and then selects, reclaim target product as much as possible.The present invention was stripped of microfine, unmanageable gangue mineral before rear one section of mill is floating, and the rate of recovery of target product is got a promotion.
In copper nickel sulfide mineral, major part target minreal floatability is better, but the target minreal in the flotation tailing after flotation, generally the intergrowth of floatability difference and the target minreal difficult floating by the gangues such as serpentine affect, the former needs flotation again of regrinding could reclaim, and the latter needs the negative effect of elimination gangue just may reclaim.Prior art is that whole flotation tailing is carried out flotation again of regrinding, or directly abandon, the former can because a large amount of, the difficult particulate magnesium silicate mineral serpentine, chlorite, talcum etc. be separated existed in flotation tailing, cause the efficiency of separation low, reagent consumption is large, technological process and Equipments Setting complexity etc., latter can make a part of target product lose.The present invention proposes flotation-magnetic separation process integration, by the synergy of each process conditions, the feature flotation first utilizing most of target sulfide mineral floatability good is reclaimed, utilize again the specific properties of copper nickel sulfide mineral itself (as having magnetic with part target minreal in copper nickel sulfide mineral, target minreal and magnetic mineral symbiosis close, the difficult non-magnetic feature of magnesium silicate mineral be separated), magnetic separation separation is carried out to flotation tailing, abandon and accounted for raw ore 30% and above mine tailing thereof, be stripped of the magnesium silicate mineral that a large amount of particulate difficulty is separated, decrease the inventory of regrinding and reconcentration, and make the material properties into being grinding into choosing more simple and easy to control, thus improve washability, improve mineral processing index, decrease consumption.The present invention is easy to industrial applications.
In a word, relative to existing nickel sulfide ore floatation, the rate of recovery of Ni of the present invention improves at least 1 percentage point; The present invention also may make the rate of recovery of Cu improve more than 1 percentage point, is more conducive to making full use of of resource.
Accompanying drawing explanation
Fig. 1 is the principle flow chart of the embodiment of the present invention 1,
The principle flow chart of Fig. 2 is comparative example 1 employing conventional scheme;
Fig. 3 is the flow chart of the embodiment of the present invention 2;
The conventional scheme flow chart that Fig. 4 adopts for comparative example 2;
Fig. 5 is the principle flow chart of the embodiment of the present invention 3.
Detailed description of the invention
Below in conjunction with embodiment, method of the present invention is described further, but not by the restriction of these embodiments.
Embodiment 1
With reference to Figure of description 1, describe embodiments of the invention 1 in detail.
Adopt the experiment process of Figure of description 1; sort certain copper nickel sulfide mineral ore pulp sample 1; mog of selected ore pulp accounts for 74% for-0.074mm, and detailed principle process scheme as shown in Figure 1, wherein selects circulation mine tailing to carry out magnetic separation sorting to the coarse scan of primary grinding flotation; magnetic separation field intensity is 5100 Gausses; magnetic tailing abandons as mine tailing 1, flotation again of regrinding after the chats of magnetic concentrate and selected circulation merges, obtain concentrate 2; abandon mine tailing 2, the mineral processing index of acquisition is shown in table 1.
One section of flotation flowsheet is one roughing once purging selection recleaning; When roughly selecting, in raw ore per ton add 1000g sodium carbonate, 150g ethyl xanthogenate, 10g butyl ammonium aerofloat ratio add sodium carbonate, ethyl xanthogenate, butyl ammonium aerofloat, when scanning, add 30g ethyl xanthogenate in raw ore per ton, the ratio of 10g butyl ammonium aerofloat adds ethyl xanthogenate and butyl ammonium aerofloat, time selected, do not add floating agent.
The mog regrinded is that-0.074mm accounts for 85% of mill feed material quality, the flow process of flotation again (i.e. bis flotation) is that one roughing secondary scans triple cleaning, roughly select and add ethyl xanthogenate 80g by raw ore per ton, butyl ammonium aerofloat 5g, scan one and scan two and add ethyl xanthogenate 10g by raw ore per ton respectively, selected not dosing.
Comparative example 1
With the choosing of the copper nickel sulfide mineral flotation scheme of routine and the on all four raw material of embodiment 1, the mineral processing index obtained is in table 1, and test principle process is shown in accompanying drawing 2.
One section of flotation flowsheet is one roughing once purging selection recleaning; When roughly selecting, in raw ore per ton add 1000g sodium carbonate, 150g ethyl xanthogenate, 10g butyl ammonium aerofloat ratio add sodium carbonate, ethyl xanthogenate, butyl ammonium aerofloat, when scanning, add 30g ethyl xanthogenate in raw ore per ton, the ratio of 10g butyl ammonium aerofloat adds ethyl xanthogenate and butyl ammonium aerofloat, time selected, do not add floating agent.
The mog regrinded is that-0.074mm accounts for 85% of mill feed material quality, the flow process of flotation again (i.e. bis flotation) is that one roughing secondary scans triple cleaning, roughly select and add ethyl xanthogenate 80g by raw ore per ton, butyl ammonium aerofloat 5g, scan one and scan two and add ethyl xanthogenate 10g by raw ore per ton respectively, selected not dosing.
Sort same copper nickel sulfide mineral sample ore, the present invention program has obvious advantage (table 1) than conventional scheme:
(1) the present invention program's nickel recovery improves 1.25 percentage points, and copper recovery improves 1.16 percentage points;
(2) the present invention program can throw except the mine tailing accounting for raw ore productive rate 38.11% at one section, greatly reduces the treating capacity of two sections of mill choosings.
Table 1 embodiment 1 result of the test
Embodiment 2
With reference to Figure of description 3, describe embodiments of the invention 2 in detail.
The present invention program is adopted to sort certain copper nickel sulfide mineral ore pulp sample, ore dressing plant production procedure taken from by this sample, be made up of two parts, one is the flotation tailing (claiming a thick tail in figure) after one roughing, another is primary cleaner tailing (claiming a smart tail in figure), and both press solid masses and are selected in than the proportions of 82:12.Do not establish due to on-the-spot flotation flowsheet and scan, first once purging selection is carried out to the flotation tailing after one roughing, scanning mine tailing is carry out magnetic separation sorting in the magnetic field of 4900 Gausses in field intensity, magnetic tailing abandons as mine tailing 1, magnetic concentrate and primary cleaner tailing merge regrinding and reconcentration, obtain concentrate, abandon mine tailing 2, concrete experimental condition is shown in Figure of description 3, and result of the test is in table 2.
Sort identical raw material with the copper nickel sulfide mineral flotation scheme of routine, the mineral processing index obtained is in table 2, and experiment process, technique and agentia condition are shown in accompanying drawing 4.
Sort same copper nickel sulfide mineral sample ore, the present invention program has obvious advantage (table 2) than conventional scheme:
(1) the present invention program's nickel operation recovery improves 4.58% on year-on-year basis, and copper operation recovery improves 4.95%;
(2) the present invention program can throw except the mine tailing accounting for selected material productive rate 45.46% at one section, greatly reduces the treating capacity of regrinding and reconcentration.
Table 2 embodiment 2 result of the test
Embodiment 3
With reference to Figure of description 5, describe embodiments of the invention 3. in detail
Certain copper nickel sulfide mineral, after the Staged grinding and staged separation of tailing regrind flotation again, what obtain concentrate 1 and last flotation circuit scans mine tailing for the last time, magnetic separation is carried out to this mine tailing scanned for the last time, the magnetic field intensity of magnetic separation is 5500 Gausses, magnetic tailing abandons as mine tailing 1, flotation again after magnetic concentrate ore grinding accounts for 90% to-0.074mm, wherein roughly select and add floating agent penta xanthate 80g/t, Z-200#30g/t, scan and add penta xanthate 30g/t, through the flotation flowsheet flotation that one roughing once purging selection triple cleaning chats order returns, the mineral processing index obtained is shown in table 3.
The result of the test of table 3 embodiment 3
Table 3 result shows, reclaims 6.71 percentage points, nickel, copper 5.06 percentage points (relative to flotation tailing) the mine tailing that the present invention program can abandon after copper nickel sulfide mineral flotation; Total mine tailing nickel grade is made to reduce by 0.01 percentage point.
Claims (7)
1. a beneficiation method for copper nickel sulfide mineral, is characterized in that; Comprise the steps:
Step one
Primary grinding flotation is carried out to copper nickel sulfide mineral raw ore, obtains concentrate 1, flotation circuit chats and flotation circuit mine tailing; Flotation circuit mine tailing is carried out magnetic separation as magnetic separation raw material, and obtain magnetic concentrate and mine tailing 1, mine tailing 1 abandons; The circulation of flotation circuit middling recurrence place sorts or merges with magnetic concentrate;
Described flotation circuit mine tailing is scan mine tailing for the last time in the flotation circuit of described primary grinding flotation, or scans mine tailing for the last time in the flotation circuit of tailing regrind flotation again;
Step 2
After ore grinding again, flotation is carried out to the magnetic concentrate in step one, obtains concentrate 2 and mine tailing 2; Or the magnetic concentrate in step one mixed with flotation circuit chats after ore grinding again, carry out flotation, obtain concentrate 2 and mine tailing 2.
2. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, is characterized in that: in step one, and levigate for the copper nickel sulfide mineral raw ore particle being-0.074mm to fineness is accounted for 60% ~ 90% of ore quality.
3. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterized in that: in the flotation of step one, the floating agent used comprises sodium carbonate 0-3000 gram of/ton of raw ore, xanthate 40 ~ 400 grams of/ton of raw ore xanthate, butyl ammonium aerofloat 0-200 gram of/ton of raw ore, thiamines ester 0-40 gram of/ton of raw ore.
4. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterized in that: in step 2, after the particle being-0.074mm by mixed material ore grinding to the fineness of magnetic concentrate or itself and flotation circuit chats accounts for 80% ~ 100% of ore grinding raw material gross mass, enter flotation; Obtain concentrate 2 and mine tailing 2.
5. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterized in that: in the flotation of step 2, the floating agent used comprises sodium carbonate 0-1000 gram of/ton of raw ore, xanthate 10g ~ 150 gram of/ton of raw ore, butyl ammonium aerofloat 0-100 gram of/ton of raw ore, thiamines ester 0-20 gram of/ton of raw ore.
6. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, is characterized in that: in step one, and during magnetic separation, controlling magnetic field intensity is 1000-10000 Gauss, is preferably 3000-8000 Gauss, more preferably 3000-6500 Gauss.
7. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, is characterized in that: in step one, and described magnetic separation comprises a magnetic and roughly selects and scan with a magnetic, the magnetic field intensity that the magnetic field intensity that magnetic is scanned is roughly selected higher than magnetic.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435954A (en) * | 2015-12-09 | 2016-03-30 | 昆明理工大学 | Method for increasing copper and nickel recycling rate from copper-nickel sulfide ore flotation middlings |
| CN106583022A (en) * | 2016-11-23 | 2017-04-26 | 昆明理工大学 | Beneficiation method for copper-nickel sulfide ore containing pyrrhotite |
| CN106964478A (en) * | 2017-02-27 | 2017-07-21 | 中国地质科学院矿产综合利用研究所 | Full-mud flotation method suitable for talc type copper-nickel sulfide ore |
| CN107234006A (en) * | 2017-05-26 | 2017-10-10 | 金川集团股份有限公司 | A kind of method for floating of high cupro-nickel than mineral |
| CN107350083A (en) * | 2017-05-23 | 2017-11-17 | 西北矿冶研究院 | Beneficiation method of high-mud high-order-generation copper sulfide ore and combined regulator used for beneficiation method |
| CN108927284A (en) * | 2018-06-06 | 2018-12-04 | 北京矿冶科技集团有限公司 | A kind of beneficiation method producing multi-product nickel ore concentrate |
| CN109701751A (en) * | 2019-03-05 | 2019-05-03 | 西部矿业股份有限公司 | A kind of high-efficient collecting agent and preparation method thereof applied to low grade copper-nickel sulphide ores |
| CN110449270A (en) * | 2019-08-21 | 2019-11-15 | 厦门紫金矿冶技术有限公司 | A kind of selecting smelting combination method handling microfine copper-sulphide ores |
| CN112474030A (en) * | 2020-11-19 | 2021-03-12 | 金川集团股份有限公司 | Beneficiation method for copper-nickel sulfide ore |
| CN112619889A (en) * | 2021-01-06 | 2021-04-09 | 矿冶科技集团有限公司 | Method for selecting copper and nickel from copper-nickel ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105435954A (en) * | 2015-12-09 | 2016-03-30 | 昆明理工大学 | Method for increasing copper and nickel recycling rate from copper-nickel sulfide ore flotation middlings |
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| CN108927284A (en) * | 2018-06-06 | 2018-12-04 | 北京矿冶科技集团有限公司 | A kind of beneficiation method producing multi-product nickel ore concentrate |
| CN109701751A (en) * | 2019-03-05 | 2019-05-03 | 西部矿业股份有限公司 | A kind of high-efficient collecting agent and preparation method thereof applied to low grade copper-nickel sulphide ores |
| CN110449270A (en) * | 2019-08-21 | 2019-11-15 | 厦门紫金矿冶技术有限公司 | A kind of selecting smelting combination method handling microfine copper-sulphide ores |
| CN112474030A (en) * | 2020-11-19 | 2021-03-12 | 金川集团股份有限公司 | Beneficiation method for copper-nickel sulfide ore |
| CN112474030B (en) * | 2020-11-19 | 2022-03-15 | 金川集团股份有限公司 | Beneficiation method for copper-nickel sulfide ore |
| CN112619889A (en) * | 2021-01-06 | 2021-04-09 | 矿冶科技集团有限公司 | Method for selecting copper and nickel from copper-nickel ore |
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