CN105013603B - A kind of beneficiation method of copper nickel sulfide mineral - Google Patents
A kind of beneficiation method of copper nickel sulfide mineral Download PDFInfo
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- CN105013603B CN105013603B CN201510442892.5A CN201510442892A CN105013603B CN 105013603 B CN105013603 B CN 105013603B CN 201510442892 A CN201510442892 A CN 201510442892A CN 105013603 B CN105013603 B CN 105013603B
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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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- Y02W30/00—Technologies for solid waste management
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Abstract
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.The method that the present invention is selected again after first flotation, flotation tailing lose tail through magnetic separation, realizes the recovery of target product as far as possible.The present invention was stripped of microfine, intractable gangue mineral before latter section of mill is floating, the rate of recovery of target product is got a promotion.The present invention is easy to industrial applications.
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
Based on flotation, typical flow scheme has one section of mill floating scheme, mine tailing to existing mineral separation method for copper nickel sulfide ore
Stage grinding-flotation scheme that the stage grinding-flotation scheme and concentrate regrinding of regrinding and reconcentration are selected again etc..The maximum nickel resources enterprise gold of China
River Group Co., Ltd ore dressing plant is sorted using the stage grinding-flotation scheme of mine tailing regrinding and reconcentration for a long time.
The key of copper nickel sulfide mineral ore dressing is efficiently separated between sulfide mineral to be made and magnesium silicate mineral.Copper nickel sulfide mineral
Ultrabasic rock is originated in, under complicated hydrothermal alteration effect, primary olivine, pyroxene, amphibole can alteration shapes in ultrabasic rock
Into secondary serpentine, talcum, mica, chlorite etc. so that the distinguishing feature of gangue is containing quite big in copper nickel sulfide mineral
The easily argillization gangue such as serpentine, chlorite, talcum of amount, and various magnesium silicate mineral coexist.Wherein serpentine have compared with
Zero point high, in the alkalescent ore pulp environment that copper nickel sulfide mineral flotation is commonly used, the serpentine sludge of lotus positive electricity passes through electrostatic
Sucking action cover is covered on target minreal surface, on the one hand suppresses its flotation, on the other hand enters flotation essence with target minreal
Ore deposit；Talcum, chlorite then because with different degrees of floatability easily enter sulphide concentrate, be as a result make concentrate grade and
The rate of recovery is difficult to improve, and makes concentrate content of magnesia be difficult to reduce.Therefore, the research of copper nickel sulfide mineral flotation at home and abroad and work
In industry practice, extensive work is how to improve the selectivity that purpose sulfide mineral with magnesium silicate gangue separate, and then is improved
Mineral processing index.Patent of invention " a kind of beneficiation methods of high-grade copper-nickel sulphide ore of CN103736584A " provides a kind of being applicable
In the magnetic-floating beneficiation combined method method for the treatment of high-grade copper nickel sulfide mineral, magnetic method is first passed through to high-grade raw ore and obtains a part
High-quality concentrate, then cupro-nickel mineral are further reclaimed using floatation to magnetic tailing.The method is only applicable to process magnetic product
Middle cupro-nickel content high-grade raw ore high, for the copper nickel sulfide mineral of middle-low grade, the direct magnetic separation of raw ore, it is difficult to obtain high-quality
Concentrate cannot even be enriched with；In addition, for three products such as magnetic concentrate, coarse fraction magnetic tailing and fine fraction magnetic tailing point
Not Cai Yong three flotation processes reclaim cupro-nickel mineral, technological process is also complex.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided ore dressing side that is a kind of simple and direct and can effectively processing copper nickel sulfide mineral
Method, weakens or even eliminates the negative effect of difficult separate magnesium silicate Mineral pairs copper nickel sulfide mineral flotation, provides copper nickel sulfide mineral
Source is able to efficiently utilize.
A kind of beneficiation method 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, concentrate 1, flotation circuit chats and flotation circuit tail is obtained
Ore deposit；Magnetic separation is carried out using flotation circuit mine tailing as magnetic separation raw material, magnetic concentrate and mine tailing 1 is obtained, mine tailing 1 is abandoned；Flotation circuit
Circulation where middling recurrence is sorted or merged with magnetic concentrate；
Described flotation circuit mine tailing is that the last time in the flotation circuit of the primary grinding flotation scans mine tailing, or
Person be mine tailing regrind flotation again flotation circuit in last time scan mine tailing；
Step 2
Flotation is carried out after ore grinding again to the magnetic concentrate in step one, concentrate 2 and mine tailing 2 is obtained；Or
Magnetic concentrate in step one is mixed with flotation circuit chats carries out flotation after ore grinding again, obtains concentrate 2
With mine tailing 2.
A kind of beneficiation method of copper nickel sulfide mineral of the present invention；Ore dressing process, typically can be using at multiple flotation operation circulation
Reason；Therefore flotation circuit chats is also just generated.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step one, by copper nickel sulfide mineral raw ore it is levigate to fineness for-
The particle of 0.074mm accounts for the 60%~90% of ore quality, into flotation, flotation can be one section of flotation can also be mine tailing again
The stage grinding flotation that mill is selected again, the floating agent used in flotation includes sodium carbonate 0-3000 g ton raw ores, xanthate 40g
~400 g ton raw ore xanthate, butyl ammonium aerofloat 0-200 g ton raw ores, thiamines ester 0-40 g ton raw ores.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step 2, by magnetic concentrate or its with flotation circuit in
Mixed material ore grinding to the fineness of ore deposit be -0.074mm particle account for the 80%~100% of ore grinding raw material gross mass after, floated
Choosing, obtains concentrate 2 and mine tailing 2.In flotation, the floating agent for being used includes sodium carbonate 0-1000 g ton raw ores, xanthate
10g~150 g ton raw ore, butyl ammonium aerofloat 0-100 g ton raw ores, thiamines ester 0-20 g ton raw ores.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, in step one, during magnetic separation, it is 1000-10000 to control magnetic field intensity
Gauss, preferably 3000-8000 Gausses, more preferably 3000-6500 Gausses.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, magnetic dressing process both can be a magnetic separation flow, or
The magnetic dressing process that magnetic roughing and magnetic are scanned, magnetic field intensity of the magnetic field intensity that magnetic is scanned higher than magnetic roughing.
A kind of mineral separation method for copper nickel sulfide ore of the present invention, it would however also be possible to employ with existing floatation process gained mine tailing as raw material；
Through the regrinding and reconcentration after magnetic separation of the invention and magnetic separation, it is also possible to obtain certain effect.
Principle and advantage
Principle of the present invention based on " can receive early receipts, this loses early losing ", reclaims most of target product, to floating by first flotation
Select mine tailing to abandon part mine tailing in the method for magnetic separation, then select again, target product is reclaimed as much as possible.The present invention is at latter section
Microfine, intractable gangue mineral are stripped of before mill is floating, the rate of recovery of target product is got a promotion.
In copper nickel sulfide mineral, most of target minreal floatability is preferable, but through the purpose in the flotation tailing after flotation
The intergrowth of mineral, usually floatability difference and influenceed and difficult floating target minreal by gangues such as serpentines, the former needs to regrind
Flotation again could be reclaimed, and the latter needs the negative effect for eliminating gangue to be only possible to reclaim.Prior art is by whole flotation tailings
Regrinded flotation again, or directly abandoned, the former can be because a large amount of present in flotation tailing, difficult separate particulate magnesium silicic acid
Salt mineral serpentine, chlorite, talcum etc., cause the efficiency of separation low, and reagent consumption is big, and technological process and device configuration are complicated
Deng, the latter a part of target product can then lost.The present invention proposes flotation-magnetic separation process integration, by each process conditions
Synergy, first with most of target sulfide mineral floatability it is good the characteristics of flotation reclaim, again using copper nickel sulfide mineral in itself
Specific properties (such as have magnetic, target minreal and magnetic mineral symbiosis close with part target minreal in copper nickel sulfide mineral
Cut, the difficult separate non-magnetic feature of magnesium silicate mineral), magnetic separation separation is carried out to flotation tailing, abandoned and accounted for raw ore
30% and its mine tailing of the above, the difficult separate magnesium silicate mineral of a large amount of particulates are stripped of, the inventory of regrinding and reconcentration is reduced,
And make more simple and easy to control into the material properties for being grinding into choosing, so as to improve washability, improve mineral processing index, reduce and disappear
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 one percentage point；This
Invention is also possible to make the rate of recovery of Cu to improve more than 1 percentage point, is more beneficial for making full use of for resource.
Brief description of the drawings
Fig. 1 is the principle flow chart of the embodiment of the present invention 1,
Fig. 2 is by comparative example 1 is using the principle flow chart of conventional scheme；
Fig. 3 is the flow chart of the embodiment of the present invention 2；
The conventional scheme flow chart that Fig. 4 is used by comparative example 2；
Fig. 5 is the principle flow chart of the embodiment of the present invention 3.
Specific embodiment
The method of the present invention is described further with reference to embodiment, but is not restricted by the embodiments.
Embodiment 1
With reference to Figure of description 1, embodiments of the invention 1 are described in detail.
Using the experiment process of Figure of description 1, certain copper nickel sulfide mineral ore pulp sample 1 is sorted, be selected in the mog of ore pulp
For -0.074mm accounts for 74%, detailed principle process scheme as shown in Figure 1, wherein to the thick scavenger flotation circuit of primary grinding flotation
Mine tailing has carried out magnetic separation sorting, and magnetic separation field intensity is 5100 Gausses, and magnetic tailing is abandoned as mine tailing 1, and magnetic concentrate is followed with selected
The chats of ring is regrinded flotation again after merging, and obtains concentrate 2, abandons mine tailing 2, and the mineral processing index of acquisition is shown in table 1.
One section of flotation flowsheet is one roughing once purging selection recleaning；During roughing, 1000g carbonic acid is added by raw ore per ton
Sodium, 150g ethyl xanthogenates, the ratio of 10g butyl ammonium aerofloats add sodium carbonate, ethyl xanthogenate, butyl ammonium aerofloat, when scanning, add by raw ore per ton
Enter 30g ethyl xanthogenates, the ratio of 10g butyl ammonium aerofloats adds ethyl xanthogenate and butyl ammonium aerofloat, when selected, is added without floating agent.
The mog regrinded is that -0.074mm accounts for the 85% of mill feed material quality, then flotation (i.e. bis flotation) flow
Triple cleaning is scanned for one roughing is secondary, roughing adds ethyl xanthogenate 80g, butyl ammonium aerofloat 5g by raw ore per ton, scans one and sweeps
Two are selected to add ethyl xanthogenate 10g, selected not dosing by raw ore per ton respectively.
Comparative example 1
With conventional copper nickel sulfide mineral flotation scheme choosing and the completely the same raw material of embodiment 1, the mineral processing index for being obtained
1 is shown in Table, experiment principle process is shown in accompanying drawing 2.
One section of flotation flowsheet is one roughing once purging selection recleaning；During roughing, 1000g carbonic acid is added by raw ore per ton
Sodium, 150g ethyl xanthogenates, the ratio of 10g butyl ammonium aerofloats add sodium carbonate, ethyl xanthogenate, butyl ammonium aerofloat, when scanning, add by raw ore per ton
Enter 30g ethyl xanthogenates, the ratio of 10g butyl ammonium aerofloats adds ethyl xanthogenate and butyl ammonium aerofloat, when selected, is added without floating agent.
The mog regrinded is that -0.074mm accounts for the 85% of mill feed material quality, then flotation (i.e. bis flotation) flow
Triple cleaning is scanned for one roughing is secondary, roughing adds ethyl xanthogenate 80g, butyl ammonium aerofloat 5g by raw ore per ton, scans one and sweeps
Two are selected to add ethyl xanthogenate 10g, selected not dosing by raw ore per ton respectively.
Same copper nickel sulfide mineral sample ore is sorted, the present invention program has obvious advantage (table 1) than conventional scheme：
(1) the present invention program nickel recovery improves 1.25 percentage points, and copper recovery improves 1.16 percentage points；
(2) the present invention program can be thrown except the mine tailing for accounting for raw ore yield 38.11% at one section, greatly reduce two sections of mill choosings
Treating capacity.
The result of the test of 1 embodiment of table 1
Embodiment 2
With reference to Figure of description 3, embodiments of the invention 2 are described in detail.
Certain copper nickel sulfide mineral ore pulp sample is sorted using the present invention program, the sample takes from ore dressing plant production procedure, by two
It is grouped into, one is that, through the flotation tailing (claiming a thick tail in figure) after one roughing, another is that primary cleaner tailing (claims an essence in figure
Tail), both compare 82 by solid masses:12 proportions are selected in.Scanned because live flotation flowsheet does not set, first to one roughing
Flotation tailing afterwards carries out once purging selection, and scan mine tailing carries out magnetic separation sorting, magnetic separation tail in the magnetic field that field intensity is 4900 Gausses
Ore deposit is abandoned as mine tailing 1, and magnetic concentrate merges regrinding and reconcentration with primary cleaner tailing, obtains concentrate, abandons mine tailing 2, specific examination
The condition of testing is shown in Figure of description 3, and result of the test is shown in Table 2.
Identical raw material is sorted with conventional copper nickel sulfide mineral flotation scheme, the mineral processing index for being obtained is shown in Table 2, experiment stream
Journey, technique and agentia condition are shown in accompanying drawing 4.
Same copper nickel sulfide mineral sample ore is sorted, the present invention program has obvious advantage (table 2) than conventional scheme：
(1) the present invention program nickel operation recovery improves 4.58% on year-on-year basis, and copper operation recovery improves 4.95%；
(2) the present invention program can be thrown except the mine tailing for accounting for selected material yield 45.46% at one section, greatly reduced and regrinded
The treating capacity selected again.
The result of the test of 2 embodiment of table 2
Embodiment 3
With reference to Figure of description 5, embodiments of the invention 3. are described in detail
Certain copper nickel sulfide mineral, by mine tailing regrind flotation again Staged grinding and staged separation after, obtain concentrate 1 and last
The last time of secondary flotation circuit scans mine tailing, and magnetic separation is carried out to the mine tailing that this is scanned for the last time, and the magnetic field intensity of magnetic separation is
5500 Gausses, magnetic tailing is abandoned as mine tailing 1, magnetic concentrate ore grinding to -0.074mm account for 90% after flotation again, wherein roughing
Floating agent penta xanthate 80g/t, Z-200#30g/t are added, penta xanthate 30g/t of addition is scanned, by one roughing once purging selection
The flotation flowsheet flotation that triple cleaning chats order is returned, the mineral processing index of acquisition is shown in table 3.
The result of the test of the embodiment 3 of table 3
The result of table 3 shows that the present invention program can reclaim 6.71 hundred, nickel from the mine tailing abandoned after copper nickel sulfide mineral flotation
Branch, 5.06 percentage points of copper (relative to flotation tailing)；Make total 0.01 percentage point of mine tailing nickel grade reduction.
Claims (7)
1. a kind of beneficiation method of copper nickel sulfide mineral, it is characterised in that；Comprise the steps：
Step one
Primary grinding flotation is carried out to copper nickel sulfide mineral raw ore, concentrate 1, flotation circuit chats and flotation circuit mine tailing is obtained；Will
Flotation circuit mine tailing carries out magnetic separation as magnetic separation raw material, obtains magnetic concentrate and mine tailing 1, and mine tailing 1 is abandoned；Flotation circuit chats is returned
Circulation where returning is sorted or merged with magnetic concentrate；
Described flotation circuit mine tailing is that the last time in the flotation circuit of the primary grinding flotation scans mine tailing, or
Mine tailing regrind flotation again flotation circuit in last time scan mine tailing；
Step 2
Flotation is carried out after ore grinding again to the magnetic concentrate in step one, concentrate 2 and mine tailing 2 is obtained；Or by step one
Magnetic concentrate mixes with flotation circuit chats carries out flotation after ore grinding again, obtains concentrate 2 and mine tailing 2.
2. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterised in that：In step one, by copper sulfide
Nickel minerals raw ore is levigate to account for the 60%~90% of ore quality to the particle that fineness is -0.074mm.
3. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterised in that：In the flotation of step one, institute
The floating agent for using includes sodium carbonate 0-3000 g ton raw ores, the g ton raw ore xanthate of xanthate 40~400, butyl ammonium aerofloat 0-
200 g ton raw ores, thiamines ester 0-40 g ton raw ores.
4. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterised in that：In step 2, by magnetic separation essence
Ore deposit or its account for ore grinding raw material gross mass with the particle that mixed material ore grinding to the fineness of flotation circuit chats is -0.074mm
80%~100% after, into 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 characterised in that：In the flotation of step 2, institute
The floating agent for using includes sodium carbonate 0-1000 g ton raw ores, xanthate 10g~150 g ton raw ore, butyl ammonium aerofloat 0-100
G ton raw ore, thiamines ester 0-20 g ton raw ores.
6. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterised in that：In step one, during magnetic separation, control
Magnetic field intensity processed is 1000-10000 Gausses.
7. a kind of mineral separation method for copper nickel sulfide ore according to claim 1, it is characterised in that：In step one, the magnetic separation
Scanned including a magnetic roughing and a magnetic, magnetic field intensity of the magnetic field intensity that magnetic is scanned higher than magnetic roughing.
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| CN105435954B (en) * | 2015-12-09 | 2017-12-22 | 昆明理工大学 | A kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery |
| CN106583022A (en) * | 2016-11-23 | 2017-04-26 | 昆明理工大学 | Beneficiation method for copper-nickel sulfide ore containing pyrrhotite |
| CN106964478B (en) * | 2017-02-27 | 2018-08-31 | 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 |
| CN107350083B (en) * | 2017-05-23 | 2019-05-17 | 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 |
| CN107234006B (en) * | 2017-05-26 | 2019-06-25 | 金川集团股份有限公司 | A kind of method for floating of high cupro-nickel than mineral |
| 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 |
| 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 |
| CN112619889B (en) * | 2021-01-06 | 2022-08-09 | 矿冶科技集团有限公司 | Method for selecting copper and nickel from copper-nickel ore |
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