CN101745467A - 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 the difficult copper mine stone of a kind of high magnetic iron ore content, particularly a kind of, copper sulfide ore that disseminated grain size thin higher at magnetic iron ore content, by 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, realization magnetic iron ore efficiently separates with copper-sulphide ores, simplifies 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, there is the production cost height in the tradition floatation process, environmental pollution is serious, the association beneficial element comprehensively reclaims shortcomings such as degree is low, and the difficult non-ferrous metal mineral resources in western highlands 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 height in the ore, the copper mineral disseminated grain size is thin, cause copper sulphur content from 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 current potential-medicament-pH value three-dimensional parameter system of coupling rationally, 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 at the big difficult copper-sulphide ores 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 the difficult copper sulfide ore of a kind of high magnetic iron ore content, this technology is workable, be easy to automatic monitoring, can realize efficiently separating 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 achieving the above object, the present invention takes following design:
Handle the copper-sulphide ores resource at the low-grade refractory that magnetic iron ore content is high, ore is in traditional floatation process, because the magnetic iron ore content height in this ore deposit, 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, by 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 difficult copper sulfide ore of magnetic iron ore content,
The primary potential-controlled flotation technology of the difficult copper-sulphide ores 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 by 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 realizes that magnetic iron ore and the efficient of copper mineral separate.
(2) copper sulfide ore floatation process pulp potential regulation and control:
In this difficult low-grade copper-sulphide ores floatation process, carrying out along with 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) by 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 as follows:
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 by 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, 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.
Difficult copper-sulphide ores at the high magnetic iron ore content in highlands, rationally mate by regulation and control slurry pH, medicament kind and factors such as consumption, flotation time, control the floatation process pulp potential at 200～230mv (SHE), realize that magnetic iron ore and the efficient of copper mineral separate, and 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: can realize efficiently separating of magnetic iron ore and copper sulfide mineral, make the big difficult 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 is difficult 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, add lime through operation 6 and carry 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, 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 enters Separation of Solid and Liquid treatment process 4, obtains copper concentrate and mine tailing after operation 4 is handled.
The invention will be further described below in conjunction with embodiment:
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 based on chalcopyrite, and disseminated grain size is (20 μ m grades account for 37%) carefully, and in close relations with magnetic iron ore, is tabular interspersed interweaving to mix embedding Bu Tezheng; Gangue mineral mainly is feldspar, quartz, hornblend, chlorite, calcite, dolomite, sericite etc.This ore magnetic iron ore content height, copper mineral disseminated grain size are thin, belong to difficult low-grade copper ore, the tradition flotation is difficult to realize effectively separating of copper mineral and magnetic iron ore, is fit to realize that by potential-controlled flotation technology the copper sulfur highly effective separates, and improves sorting index.
It is below the 10mm that the middle ore of step (1) is crushed to granularity.
In the step (2) in the grinding process of difficult low-grade copper sulfide ore, ore grinding pulp density 66%, mog-200 order 80%, regulate slurry pH 9.5 by adding lime 1500g/t, add adjustment agent such as sodium sulfite 1000g/t and zinc sulfate 500g/t and carry 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 difficult low-grade copper sulfide ore, 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.
Before the regulation and control of Qinghai Sai Shitang copper mine after floating agent and index and the regulation and control contrast situation see Table 1, before the regulation and control with regulation and control after flotation flowsheet sees Fig. 2 and Fig. 3.The contrast of flowage structure and index shows before and after the regulation and control, adopts thick three essences two to sweep flow process before the regulation and control, and the one thick two single-minded flow process of sweeping is adopted in the regulation and control back, 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 difficult copper mine stone can effectively be regulated current potential by regulating each parameter such as grinding process slurry pH, adjustment agent kind and consumption, and the reasonable coupling by 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, realize the efficient flotation of the difficult low-grade sulfide ore of high magnetic iron ore, simplify flowage structure, improve 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 difficult copper sulfide ore for 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, 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, what enlarge the copper-sulphide ores resource utilizes scope, Effective Raise copper comprehensive utilization of resources rate.
Claims (3)
1. one kind high primary potential-controlled flotation technology of the difficult copper mine stone of magnetic iron ore content, it is characterized in that: it may further comprise the steps:
(1) preliminary treatment of ore
The difficult copper sulfide ore of high magnetic iron ore content is crushed to granularity below 10mm, enters grinding system subsequently;
(2) grinding process pulp potential regulation and control
Ore after step (1) is handled enters grinding system, ore grinding pulp density 55～70% (percentage by weight), and mog-200 order 70%-90% at first regulates grinding process pH value 9～10; Secondly with adjusting agent sodium sulfite or/and zinc sulfate is regulated, the ore grinding pulp potential is controlled at-35～60mv (SHE) scope in;
(3) floatation process pulp potential regulation and control
PH value 9～10 before the ore after step (2) is handled, flotation, pulp potential is controlled in 210～160mv (SHE) scope, at first regulates the good copper mineral collecting agent of selectivity, further regulates and control pulp potential at 200～230mv (SHE); Strict control flotation time is within 10min, and pulp potential is controlled in the 265mv (SHE) after the flotation, when guaranteeing the copper mineral flotation rate of recovery, effectively suppresses the come-up of magnetic iron ore, realizes that magnetic iron ore and the efficient of copper mineral separate.
2. the primary potential-controlled flotation technology of the difficult copper sulfide ore of a kind of high magnetic iron ore content 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 the difficult copper sulfide ore of a kind of high magnetic iron ore content according to claim 1 and 2, it is characterized in that: described collecting agent is Z-200,
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321146A (en) * | 2012-05-10 | 2015-01-28 | 奥图泰(芬兰)公司 | Method and apparatus for controlling the flotation process of pyrite - containing sulphide ores |
| CN105592930A (en) * | 2013-07-19 | 2016-05-18 | 赢创德固赛有限公司 | Method for recovering copper sulfide from ore containing 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 |
| CN111744678A (en) * | 2020-07-06 | 2020-10-09 | 矿冶科技集团有限公司 | Pretreatment method for deep sea sulfide flotation, beneficiation method for deep sea sulfide and deep sea sulfide flotation pretreatment agent |
| CN114345557A (en) * | 2022-01-17 | 2022-04-15 | 中国科学院过程工程研究所 | Preparation method of pyrites with different oxidation degrees |
-
2009
- 2009-12-18 CN CN 200910241999 patent/CN101745467B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321146A (en) * | 2012-05-10 | 2015-01-28 | 奥图泰(芬兰)公司 | Method and apparatus for controlling the flotation process of pyrite - containing sulphide ores |
| CN105592930A (en) * | 2013-07-19 | 2016-05-18 | 赢创德固赛有限公司 | Method for recovering copper sulfide from ore containing iron sulfide |
| CN105592930B (en) * | 2013-07-19 | 2017-09-12 | 赢创德固赛有限公司 | The method that copper sulfide is reclaimed from Containing Sulfur iron ore |
| CN110064522A (en) * | 2019-05-30 | 2019-07-30 | 贵州大学 | A kind of low-grade phosphate ore automatic control flotation unit |
| CN111744678A (en) * | 2020-07-06 | 2020-10-09 | 矿冶科技集团有限公司 | Pretreatment method for deep sea sulfide flotation, beneficiation method for deep sea sulfide and deep sea sulfide flotation pretreatment agent |
| CN114345557A (en) * | 2022-01-17 | 2022-04-15 | 中国科学院过程工程研究所 | Preparation method of pyrites with different oxidation degrees |
| 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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