CN112317138A - Copper-zinc separation method for high-sulfur copper-zinc ore - Google Patents
Copper-zinc separation method for high-sulfur copper-zinc ore Download PDFInfo
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- CN112317138A CN112317138A CN202011280603.3A CN202011280603A CN112317138A CN 112317138 A CN112317138 A CN 112317138A CN 202011280603 A CN202011280603 A CN 202011280603A CN 112317138 A CN112317138 A CN 112317138A
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- copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
Abstract
The invention discloses a copper-zinc separation method for high-sulfur copper-zinc ores, and relates to the field of mineral processing technology for improving the recovery and utilization rate of mineral resources. The invention comprises the following steps: (1) crushing the high-sulfur copper-zinc ore, adding an inhibitor and a collecting agent, and then roughing; (2) carrying out scavenging on the roughed tailings, and carrying out first fine separation on the roughed tailings; (3) the first concentration tailing of the first concentration is mixed with scavenging foam of scavenging to carry out the fine scavenging; (4) mixing the grading foam subjected to the fine cleaning with second fine cleaning tailings subjected to the second fine cleaning, and then carrying out fine cleaning in the first fine cleaning; (5) the second concentrating ore is copper concentrate; (6) mixing the fine scavenged tailings and scavenged tailings, and discharging the mixture into a zinc dressing process; the method achieves the purposes of reducing roughing and scavenging loads, reducing zinc content of copper concentrate and improving copper recovery rate.
Description
Technical Field
The invention relates to the field of mineral processing technology for improving the recovery and utilization rate of mineral resources, in particular to a copper-zinc separation method for high-sulfur copper-zinc ores.
Background
The flotation process flow is a general term of the operation of flowing the ore pulp in the flotation process. Different types of ores are treated by different processes, and the choice of flotation process depends mainly on the properties of the ore and the quality requirements of the concentrate.
Copper-zinc ore is mainly separated during sorting, the ore is complex in property, the embedded granularity is fine, the minerals are mutually wrapped, and the sorting index is poor. The designed and used copper-zinc separation flotation process flow adopts a mode of preferentially floating copper and selecting zinc from copper tailings, the copper flotation process flow adopts the process flows of twice roughing, once scavenging, three times of concentrate and middling ore sequential return, in the actual production, the copper roughing and scavenging are difficult to inhibit the zinc at one time, if the one-time zinc inhibition is adopted, the copper is also inhibited at the same time, the copper loss of the tailings is high, and the copper recovery rate is low; the zinc is not inhibited in place at one time in the rough scavenging, the zinc is inhibited in the concentrating stage after the zinc enters the concentrating, the middlings are continuously circulated after returning to the rough scavenging, the circulation quantity is gradually increased, the rough scavenging and the scavenging loads are gradually increased, the flotation flow is deteriorated, the copper and the zinc are difficult to separate, and the copper and zinc separation index is poor.
Disclosure of Invention
The invention aims to provide a copper-zinc separation method for high-sulfur copper-zinc ore, which aims to reduce the loads of roughing and scavenging, reduce the zinc content of copper concentrate and improve the copper recovery rate.
In order to achieve the purpose, the invention adopts the following technical means:
a copper-zinc separation method for high-sulfur copper-zinc ore comprises the following steps:
(1) crushing the high-sulfur copper-zinc ore, adding an inhibitor and a collecting agent, and then roughing;
(2) carrying out scavenging on the roughed tailings, and carrying out first fine separation on the roughed tailings;
(3) the first concentration tailing of the first concentration is mixed with scavenging foam of scavenging to carry out the fine scavenging;
(4) mixing the grading foam subjected to the fine cleaning with second fine cleaning tailings subjected to the second fine cleaning, and then carrying out fine cleaning in the first fine cleaning;
(5) the second concentrating ore is copper concentrate;
(6) mixing the fine scavenged tailings and scavenged tailings, and discharging the mixture into a zinc dressing process;
further, in the step (1), quicklime is used as the inhibitor, and the dosage of the quicklime is 200-1000 g/t.
Preferably, in the step (1), a mixed reagent of the butylammonium black reagent and the butylacetic reagent is used as a collecting agent, and the ratio of the butylammonium black reagent to the butylacetic reagent is 8: 1-5.
Furthermore, quicklime is added as an inhibitor when the first concentration and the second concentration are carried out, and the addition amount of the quicklime is 1-100 g/t.
Furthermore, the roughing in the step (1) includes a first roughing and a second roughing, the first roughing of the first roughing directly enters the first fine screening, the first roughing tailings of the first roughing enter the second roughing, the second roughing tailings of the second roughing enter the first fine screening, and the second roughing tailings of the second roughing enter the scavenging.
Further, the raw ore is ground to-200 mesh before being roughed.
The invention has the following beneficial effects in the application process:
after the roughing is carried out on the raw ore, the roughing of the roughing enters a fine selection process, the roughing tailings enter a scavenging process, specifically, after the roughing is carried out on the first fine selection, the first fine selection of the first fine selection is discharged for secondary fine selection, the first fine selection tailings of the first fine selection are mixed with scavenging foam of the scavenging process, the fine scavenging is carried out, namely, the middlings are independently and finely scavenged, and the roughing process of the middlings is not carried out again. And then after the middlings are subjected to fine scavenging, the grading foam of the fine scavenging is mixed with second fine tailings of the second fine concentration, the first fine concentration is directly carried out again for fine concentration, the fine scavenged fine tailings and the scavenged tailings of the fine scavenging are mixed and then discharged into a zinc separation process, and the second fine tailings of the second fine concentration are copper concentrates finished by mineral separation. In the whole process, the first choice tailings and scavenging foam are independently sorted, namely, the first choice tailings and the scavenging foam are combined, once scavenging and scavenging foam sorting are carried out on the mixed material, namely, fine scavenging is carried out, the sorting foam after the fine scavenging directly circulates into the first choice process, and the fine scavenging tailings after the fine scavenging and the scavenging tailings are mixed and enter into the zinc sorting process. And then through changing the route of middlings, the situation that the middlings circulate continuously after being returned to rough concentration is avoided, the circulation volume is increased gradually, rough concentration and scavenging loads are increased gradually to cause the situation that a large amount of copper runs out of tailings in primary concentration is avoided, in the whole process, scavenging materials are also subjected to a primary concentration flow, and a primary scavenging flow is also performed on fine tailings, so that the copper recovery rate of copper concentrate is greatly increased.
Drawings
Fig. 1 is a schematic view of the beneficiation process flow of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Specifically, referring to fig. 1, a method for separating copper and zinc from high-sulfur copper-zinc ore includes the following steps:
(1) crushing the high-sulfur copper-zinc ore, adding an inhibitor and a collecting agent, and then roughing;
(2) carrying out scavenging on the roughed tailings, and carrying out first fine separation on the roughed tailings;
(3) the first concentration tailing of the first concentration is mixed with scavenging foam of scavenging to carry out the fine scavenging;
(4) mixing the grading foam subjected to the fine cleaning with second fine cleaning tailings subjected to the second fine cleaning, and then carrying out fine cleaning in the first fine cleaning;
(5) the second concentrating ore is copper concentrate;
(6) and mixing the fine scavenged tailings with the scavenged tailings to be discharged into a zinc dressing process.
In the step (1), quicklime is used as the inhibitor, and the dosage of the quicklime is 200-1000 g/t.
And in the step (1), a mixed reagent of the butylammonium black and the butylanthrene is used as a collecting agent, and the ratio of the butylammonium black to the butylanthrene is 8: 1-5.
Meanwhile, quicklime is added as an inhibitor when the first concentration and the second concentration are carried out, and the addition amount of the quicklime is 1-100 g/t.
Furthermore, the roughing in the step (1) includes a first roughing and a second roughing, the first roughing of the first roughing directly enters the first fine screening, the first roughing tailings of the first roughing enter the second roughing, the second roughing tailings of the second roughing enter the first fine screening, and the second roughing tailings of the second roughing enter the scavenging.
Meanwhile, the raw ore is ground to-200 meshes before being roughly selected.
After the roughing is carried out on the raw ore, the roughing of the roughing enters a fine selection process, the roughing tailings enter a scavenging process, specifically, after the roughing is carried out on the first fine selection, the first fine selection of the first fine selection is discharged for secondary fine selection, the first fine selection tailings of the first fine selection are mixed with scavenging foam of the scavenging process, the fine scavenging is carried out, namely, the middlings are independently and finely scavenged, and the roughing process of the middlings is not carried out again. And then after the middlings are subjected to fine scavenging, the grading foam of the fine scavenging is mixed with second fine tailings of the second fine concentration, the first fine concentration is directly carried out again for fine concentration, the fine scavenged fine tailings and the scavenged tailings of the fine scavenging are mixed and then discharged into a zinc separation process, and the second fine tailings of the second fine concentration are copper concentrates finished by mineral separation. In the whole process, the first choice tailings and scavenging foam are independently sorted, namely, the first choice tailings and the scavenging foam are combined, once scavenging and scavenging foam sorting are carried out on the mixed material, namely, fine scavenging is carried out, the sorting foam after the fine scavenging directly circulates into the first choice process, and the fine scavenging tailings after the fine scavenging and the scavenging tailings are mixed and enter into the zinc sorting process. And then through changing the route of middlings, the situation that the middlings circulate continuously after being returned to rough concentration is avoided, the circulation volume is increased gradually, rough concentration and scavenging loads are increased gradually to cause the situation that a large amount of copper runs out of tailings in primary concentration is avoided, in the whole process, scavenging materials are also subjected to a primary concentration flow, and a primary scavenging flow is also performed on fine tailings, so that the copper recovery rate of copper concentrate is greatly increased.
The beneficiation method according to the present invention is compared with a conventional process of circulating middlings to a rough ore.
Example 1
In this example, a raw ore of high-sulfur copper-zinc ore was used, in which the copper content was 1.67% and the zinc content was 2.68%. The specific process flow adopts the process described in the invention for mineral separation.
The specific copper concentrate indexes are shown in table 1.
Comparative example 1
In this example, a raw ore of high-sulfur copper-zinc ore was used, in which the copper content was 3.67% and the zinc content was 1.68%. The specific process flow adopts the conventional flow, and comprises the following steps:
the method comprises the following steps of crushing raw ores, performing primary roughing, performing secondary roughing on primary roughing tailings, mixing secondary roughing tailings with the primary roughing ores, performing primary concentration, scavenging the secondary roughing tailings, mixing primary concentration tailings generated by the primary concentration with scavenging foams to form middlings, circulating the middlings back to the initial primary roughing step, directly feeding the scavenged tailings into a zinc concentration process, performing secondary concentration on primary concentration tailings generated by the primary concentration, obtaining copper concentrate serving as second concentrate generated by the secondary concentration, and circulating secondary concentration tailings generated by the secondary concentration into the primary concentration process to perform primary concentration again.
The specific copper concentrate indexes are shown in table 1.
TABLE 1
As can be seen from table 1, compared with the conventional beneficiation method, the method of the present invention can greatly improve the recovery rate of copper and greatly improve the grade of copper in copper concentrate.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A copper-zinc separation method for high-sulfur copper-zinc ore is characterized by comprising the following steps: the method comprises the following steps:
(1) crushing the high-sulfur copper-zinc ore, adding an inhibitor and a collecting agent, and then roughing;
(2) carrying out scavenging on the roughed tailings, and carrying out first fine separation on the roughed tailings;
(3) the first concentration tailing of the first concentration is mixed with scavenging foam of scavenging to carry out the fine scavenging;
(4) mixing the grading foam subjected to the fine cleaning with second fine cleaning tailings subjected to the second fine cleaning, and then carrying out fine cleaning in the first fine cleaning;
(5) the second concentrating ore is copper concentrate;
(6) and mixing the fine scavenged tailings with the scavenged tailings to be discharged into a zinc dressing process.
2. The copper-zinc separation method of high-sulfur copper-zinc ore according to claim 1, characterized in that: in the step (1), quicklime is used as the inhibitor, and the dosage of the quicklime is 200-1000 g/t.
3. The copper-zinc separation method of high-sulfur copper-zinc ore according to claim 1, characterized in that: in the step (1), a mixed reagent of a butylammonium black medicament and a butylanthan xanthate is used as a collecting agent, and the ratio of the butylammonium black medicament to the butylanthan xanthate is 8: 1-5.
4. The copper-zinc separation method of high-sulfur copper-zinc ore according to claim 1, characterized in that: adding quicklime as an inhibitor when performing the first concentration and the second concentration, wherein the addition amount of the quicklime is 1-100 g/t.
5. The copper-zinc separation method of high-sulfur copper-zinc ore according to claim 1, characterized in that: the roughing in the step (1) comprises a first roughing and a second roughing, wherein the first roughing of the first roughing directly enters the first fine screening, the first roughing tailings of the first roughing enter the second roughing, the second roughing tailings of the second roughing enter the first fine screening, and the second roughing tailings of the second roughing enter the scavenging.
6. The copper-zinc separation method of high-sulfur copper-zinc ore according to claim 1, characterized in that: the raw ore is ground to-200 meshes before being roughed.
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| CN202011280603.3A CN112317138A (en) | 2020-11-16 | 2020-11-16 | Copper-zinc separation method for high-sulfur copper-zinc ore |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549326A (en) * | 2009-05-15 | 2009-10-07 | 江西理工大学 | Technique for floatation separation of hard washing copper zinc sulfuration mine |
| CN106733203A (en) * | 2016-12-02 | 2017-05-31 | 北京矿冶研究总院 | Beneficiation method for skarn copper ore |
| CN109365137A (en) * | 2018-08-30 | 2019-02-22 | 西北矿冶研究院 | Flotation method for comprehensively recovering copper and gold from copper-dressing tailings |
| CN110038730A (en) * | 2019-05-20 | 2019-07-23 | 北京矿冶科技集团有限公司 | A kind of beneficiation method containing two types copper cobalt sulfide ore containing cobalt mineralss |
-
2020
- 2020-11-16 CN CN202011280603.3A patent/CN112317138A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549326A (en) * | 2009-05-15 | 2009-10-07 | 江西理工大学 | Technique for floatation separation of hard washing copper zinc sulfuration mine |
| CN106733203A (en) * | 2016-12-02 | 2017-05-31 | 北京矿冶研究总院 | Beneficiation method for skarn copper ore |
| CN109365137A (en) * | 2018-08-30 | 2019-02-22 | 西北矿冶研究院 | Flotation method for comprehensively recovering copper and gold from copper-dressing tailings |
| CN110038730A (en) * | 2019-05-20 | 2019-07-23 | 北京矿冶科技集团有限公司 | A kind of beneficiation method containing two types copper cobalt sulfide ore containing cobalt mineralss |
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