CN101745467B - Original potential control flotation technology for copper ore with unmanageable high-magnetic pyrite content - Google Patents
Original potential control flotation technology for copper ore with unmanageable high-magnetic pyrite content Download PDFInfo
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Abstract
The invention relates to an original potential control flotation technology for copper ore with unmanageable high-magnetic pyrite content. The technology regulates reasonable matching of flotation pulp potential and impact parameters such as a pulp pH value, medicament kind and amount, flotation time and the like, and controls flotation pulp potential within a proper range, thus effectively improving copper recovery by 3-5% compared with the traditional oredressing, realizing high-effectively selective flotation of copper minerals in copper ore with high-magnetism pyrite content and achieving the purposes of improving sorting index, lowering production cost and simplifying flow structure. The technology has strong maneuverability, simple equipment, small pollution and high recovery rate, thus being suitable for low-grade copper sulphide ore resource with unmanageable pyrite content which is hard to process in the traditional oredressing technology, expanding resource utilization range and improving the comprehensive utilization ratio of copper resource.
Description
Technical field
The present invention relates to the primary potential-controlled flotation technology of a kind of high magnetic iron ore content copper mine stone hard to manage; Particularly a kind of to magnetic iron ore content is higher, disseminated grain size is thin copper sulfide ore; Through regulation and control ore grinding and floatation process ore pulp oxidation-reduction potential; With Rational Parameters couplings such as slurry pH and regime of agent, realize the high efficiency separation of magnetic iron ore and copper-sulphide ores, simplify the technology of flowage structure, raising separation index simultaneously.
Background technology
China's sulphide ore nonferrous metal resource processing industry mainly adopts traditional floatation process; Under present technical conditions; The tradition floatation process exists production cost high; Environmental pollution is serious, and the association beneficial element comprehensively reclaims shortcomings such as degree is low, and western highlands non-ferrous metal mineral resources hard to manage are difficult to the high efficiente callback utilization.For example, Qinghai Sai Shitang high-sulfur copper mine stone is located in the highlands, cold and oxygen deficient; Natural conditions are abominable, because magnetic iron ore content is high in the ore, the copper mineral disseminated grain size is thin; Cause copper sulphur content to leave a series of problems such as difficult, that copper recovery is low, traditional floatation process is difficult to realize reasonable development and utilization.Characteristics such as primary potential-controlled flotation technology has the sorting index height, simplifies flowage structure, reduces production costs, resource utilization height; The key technology of this technology is that traditional floatation process medicament-pH value two-dimensional parameter system is developed into the three-dimensional parameter system of current potential-medicament-pH value rational Match; This The Application of Technology; To improve floatation indicators greatly, improve the flotation comprehensive recovery, and simple to operate, be easy to realize automatic control.Therefore,, be necessary to provide a kind of primary potential-controlled flotation technology, separate, improve floatation indicators, reduce production costs, improve the comprehensive utilization of resources rate to realize the copper sulfur highly effective to the big copper-sulphide ores hard to manage of this highlands magnetic iron ore content.
Summary of the invention
The purpose of this invention is to provide the primary potential-controlled flotation technology of a kind of high magnetic iron ore content copper sulfide ore hard to manage; This technology is workable, be easy to automatic monitoring; Can realize the high efficiency separation of purpose mineral and impure mineral; Promptly in ore grinding-floatation process, traditional floatation process control parameter and the primary current potential of ore pulp are combined, the primary current potential of regulation and control ore pulp is to the influence of floatation process and the optimum Match between each factor; Realize that the copper sulfur highly effective separates, and reaches the purpose that improves floatation indicators.
For realizing above-mentioned purpose, the present invention takes following design:
Low-grade refractory to magnetic iron ore content is high is handled the copper-sulphide ores resource, and ore is in traditional floatation process, because the magnetic iron ore content in this ore deposit is high; Account for 10～20% of total mineral quantity; And the copper mineral disseminated grain size is thin, accounts for 30～40% below the disseminated grain size 20 μ m, has a strong impact on mineral processing index.Considering in copper sulfide ore ore grinding-floatation process that pulp potential is the key factor that influences separation index, is again the isoparametric comprehensive embodiment of slurry pH, regime of agent simultaneously.
This technology is meant in copper sulfide ore ore grinding-floatation process; Through regulation and control slurry pH, floating agent kind and parameters such as consumption, flotation time; Regulate and control the ore pulp oxidation-reduction potential, realize that the copper sulfur highly effective separates, improves the technology of floatation indicators, can effectively improve copper recovery; Improve 3～5 percentage points than traditional ore dressing, and can simplify flow process and reduce production costs.Be particularly suitable for the primary potential-controlled flotation technology of the big copper sulfide ore hard to manage of magnetic iron ore content,
The primary potential-controlled flotation technology of the copper-sulphide ores hard to manage of this high magnetic iron ore content mainly may further comprise the steps:
(1) copper sulfide ore grinding process pulp potential regulation and control:
With ore reduction to granularity less than 10mm, ore grinding then, mog-200 order 70%～90%.Add lime, zinc sulfate in the grinding process or/and the sodium sulfite medicament is regulated pulp potential.Along with the increase of lime consumption, the pH value raises, and pulp potential descends, and regulates the grinding process pulp potential through adjustment agent consumptions such as regulation and control lime and sodium sulfites.
It is 1000～2000g/t that grinding process is regulated lime consumption, and flotation pulp pH value is controlled at 9.0～10, Na
2SO
3Consumption 1000～2000g/t and ZnSO
4Consumption 500～1000g/t, can make the ore grinding pulp potential be controlled at-35～60mv (SHE) scope in, the pulp potential before the flotation is controlled in 210～160mv (SHE) scope; The come-up that can effectively suppress magnetic iron ore, the high efficiency separation of realization magnetic iron ore and copper mineral.
(2) copper sulfide ore floatation process pulp potential regulation and control:
In this low-grade copper-sulphide ores floatation process hard to manage; Along with the carrying out of flotation, the flotation pulp current potential can progressively raise, when pulp potential surpasses 265mv (SHE); Have a large amount of magnetic iron ore come-ups; Therefore, must control the flotation system of suitable pulp potential, to suppress pyritous a large amount of come-up.Can take to control the floatation process pulp potential at 200～230mv (SHE) through regulation and control slurry pH, adjustment agent and collecting agent medicament kind and factors such as consumption, flotation time.Flotation pulp concentration 25～40% (percentage by weight)
Concrete scheme is following:
1. regulate the flotation pulp current potential at 180～210mv (SHE), regulate and control the flotation pulp current potential, realize effective inhibition of magnetic iron ore, reach the purpose of copper mineral selective floation through regulating slurry pH;
2. in the copper mine stone current potential floatation process,, adopt and add the good copper mineral collecting agent Z-200 of selectivity, further regulate and control pulp potential at 200～230mv (SHE) for improving flotation recovery rate;
3. along with the prolongation of flotation time, pulp potential can progressively raise, and strict control flotation time is within 10min; Pulp potential is controlled in the 265mv (SHE) after the flotation; When guaranteeing the copper mineral flotation rate of recovery, effectively suppress the come-up of magnetic iron ore, and can shorten flow process; Reduce cost, improve sorting index.
Copper-sulphide ores hard to manage to the high magnetic iron ore content in highlands; Through regulation and control slurry pH, medicament kind and factor rational Match such as consumption, flotation time; Control the floatation process pulp potential at 200～230mv (SHE); Realize the high efficiency separation of magnetic iron ore and copper mineral, improve sorting index.
SHE is a kind of of pulp potential unit, is meant the relative hydrogen electrode current potential of ore pulp, measures with potential difference meter.
Advantage of the present invention is: the high efficiency separation that can realize magnetic iron ore and copper sulfide mineral; Make the big hard to manage low-grade copper-sulphide ores resource of magnetic iron ore content be able to effective development and use; Improve the comprehensive utilization ratio of copper ore resource, can obtain bigger economy, environment and social benefit.
Description of drawings
Fig. 1: be the process flow diagram of a kind of enforcement of the present invention
Fig. 2: flotation process before the regulation and control
Fig. 3: regulation and control back flotation process
The specific embodiment
As shown in Figure 1,1 awkward processing low-grade copper sulfide ore broken process; Ore after the fragmentation is sent into ore Grinding procedure 2; Pulp density 66% in the Grinding procedure, in the ore Grinding procedure process, adds lime through operation 6 and carries out that pH regulates, operation 8 is adjusted the agent kind and the consumption regulation and control; Grinding process carries out potential-controlled flotation operation 3 after regulating, and pulp density 33% in the flotation operation; In the ore floatation process, add collecting agent, operation 9 adjusting flotation times, regulate and control the floatation process pulp potential through operation 7; The ore pulp of operation 3 gets into Separation of Solid and Liquid treatment process 4, obtains copper concentrate and mine tailing after operation 4 is handled.
Below in conjunction with embodiment the present invention is described further:
Copper grade 1.08% in the Sai Shitang copper sulfide ore of Qinghai; Be located in the highlands, cold and oxygen deficient, magnetic iron ore content accounts for 14%; Copper sulphur ratio and copper iron are than low (Cu/S=0.11; Cu/Fe=0.06), metalliferous mineral mainly is chalcopyrite, magnetic iron ore, pyrite, melnikovite etc., and other has a small amount of magnetic iron ore, tetrahedrite, mispickel, malachite and chessylite; Copper-bearing mineral is main with chalcopyrite, disseminated grain size thin (20 μ m grades account for 37%), and in close relations with magnetic iron ore, be and tabular interspersed interweaving mix embedding Bu Tezheng; Gangue mineral mainly is feldspar, quartz, hornblend, chlorite, calcite, dolomite, sericite etc.This ore magnetic iron ore content is high, the copper mineral disseminated grain size is thin; Belong to low-grade copper ore hard to manage; The tradition flotation is difficult to realize effectively separating of copper mineral and magnetic iron ore, is fit to realize that through potential-controlled flotation technology the copper sulfur highly effective separates, and improves sorting index.
Ore reduction is below the 10mm to granularity in the step (1).
In the step (2) in the grinding process of low-grade copper sulfide ore hard to manage; Ore grinding pulp density 66%; Mog-200 order 80% is regulated slurry pH 9.5 through adding lime 2000g/t, adds adjustment agent such as sodium sulfite 1000g/t and zinc sulfate 500g/t and carries out the regulation and control of grinding process pulp potential; Realize parameter matching such as pH value and medicament, thereby pulp potential is in-35～60mv (SHE) scope in the maintenance grinding process.
In the floatation process of low-grade copper sulfide ore hard to manage, flotation pulp concentration 33% is at first added the good copper mineral collecting agent Z-200 consumption 30g/t of selectivity before the flotation in the step (3), and the control pulp potential is at 200～230mV (SHE); Secondly the strict control of floatation process pulp potential changes, and along with the prolongation of flotation time, pulp potential progressively raises, and the control flotation time is in 10min, and pulp potential was controlled in the 265mV (SHE) when flotation finished.
Floating agent and index and regulation and control back contrast situation are seen table 1 before the Sai Shitang copper mine regulation and control of Qinghai, see Fig. 2 and Fig. 3 with regulation and control back flotation flowsheet before the regulation and control.The contrast of flowage structure and index shows before and after the regulation and control, adopts one thick three smart two to sweep flow process before the regulation and control, the regulation and control back employing one thick two single-minded flow process of sweeping, and flowage structure is obviously simplified, and sorting index obviously improves, and copper recovery improves nearly 7 percentage points.
Floating agent and index contrast before and after table 1 regulation and control
Therefore; The primary potential-controlled flotation technology of this copper mine stone hard to manage can effectively regulate current potential through regulating each parameter such as grinding process slurry pH, adjustment agent kind and consumption; And the rational Match through floatation process collecting agent kind and each factor such as consumption, flotation time and pulp potential; Control pulp potential within the specific limits; The three-dimensional parameter that reaches ore grinding-floatation process is rationally regulated and control, and realizes the efficient flotation of high magnetic iron ore low-grade sulfide ore hard to manage, simplifies flowage structure, improves sorting index.
Flotation concentrate and mine tailing carry out Separation of Solid and Liquid in the step (4), finally obtain copper concentrate and mine tailing.
Effect of the present invention is: the copper sulfide ore hard to manage to the high magnetic iron ore content in highlands passes through regulation and control ore grinding-floatation process pulp potential; Make copper sulphur content strong from process operation property; Be easy to realize copper mineral selective floation; Can be used for developing such sulphur copper that traditional technique of preparing is difficult to utilize than high low-grade secondary copper sulfide ore resources, enlarge the scope of utilizing of copper-sulphide ores resource, effectively improve copper comprehensive utilization of resources rate.
Claims (3)
1. one kind high primary potential-controlled flotation technology of magnetic iron ore content copper mine stone hard to manage, it is characterized in that: it may further comprise the steps:
(1) preliminary treatment of ore
High magnetic iron ore content copper sulfide ore hard to manage is crushed to granularity below 10mm, gets into grinding system subsequently;
(2) grinding process pulp potential regulation and control
Ore after step (1) is handled gets into grinding system, and ore grinding pulp density percentage by weight is 55～70%, and mog-200 order 70%-90% at first regulates grinding process pH value 9～10 with lime; Secondly use adjustment agent sodium sulfite or/and zinc sulfate is regulated, the relative hydrogen electrode control of Electric potentials of ore grinding ore pulp is in-35～60mv scope;
(3) floatation process pulp potential regulation and control
PH value 9～10 before the ore after step (2) is handled, flotation, the relative hydrogen electrode control of Electric potentials of ore pulp is at first regulated the good copper mineral collecting agent of selectivity in 160～210mv scope, further regulate and control the relative hydrogen electrode current potential of ore pulp at 200～230mv; Strict control flotation time is within 10min, and the relative hydrogen electrode control of Electric potentials of ore pulp when guaranteeing the copper mineral flotation rate of recovery, effectively suppresses the come-up of magnetic iron ore after the flotation in 265mv, realizes the high efficiency separation of magnetic iron ore and copper mineral.
2. the primary potential-controlled flotation technology of a kind of high magnetic iron ore content copper mine stone hard to manage according to claim 1 is characterized in that: sodium sulfite 1000～2000g/t and zinc sulfate 500～1000g/t.
3. the primary potential-controlled flotation technology of a kind of high magnetic iron ore content copper mine stone hard to manage according to claim 1 and 2, it is characterized in that: described collecting agent is Z200.
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| CN 200910241999 CN101745467B (en) | 2009-12-18 | 2009-12-18 | Original potential control flotation technology for copper ore with unmanageable high-magnetic pyrite content |
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| MA37579B1 (en) * | 2012-05-10 | 2016-05-31 | Outotec Finland Oy | Method and apparatus for controlling the flotation treatment of sulphide ores containing pyrite |
| PL3021972T3 (en) * | 2013-07-19 | 2018-12-31 | Evonik Degussa Gmbh | Method for recovering a copper sulfide from an ore containing an iron sulfide |
| CN110064522A (en) * | 2019-05-30 | 2019-07-30 | 贵州大学 | A kind of low-grade phosphate ore automatic control flotation unit |
| CN111744678B (en) * | 2020-07-06 | 2022-01-28 | 矿冶科技集团有限公司 | Pretreatment method for deep sea sulfide flotation and ore dressing method for deep sea sulfide |
| CN114345557B (en) * | 2022-01-17 | 2022-11-25 | 中国科学院过程工程研究所 | Preparation method of pyrites with different oxidation degrees |
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Effective date of registration: 20190627 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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Effective date of registration: 20210409 Address after: 101407 No.11, Xingke East Street, Yanqi Economic and Technological Development Zone, Huairou District, Beijing Patentee after: Youyan resources and Environment Technology Research Institute (Beijing) Co.,Ltd. Address before: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee before: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |