CN104607306A - Converter slag copper magnetic levitation beneficiation combined method - Google Patents
Converter slag copper magnetic levitation beneficiation combined method Download PDFInfo
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- CN104607306A CN104607306A CN201510015792.4A CN201510015792A CN104607306A CN 104607306 A CN104607306 A CN 104607306A CN 201510015792 A CN201510015792 A CN 201510015792A CN 104607306 A CN104607306 A CN 104607306A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
Abstract
The invention discloses a converter slag copper magnetic levitation beneficiation combined method. The converter slag copper magnetic levitation beneficiation combined method includes the following steps: ore grinding, regrinding, two times of grading, two times of roughing, two times of scavenging, two times of magnetic separation and a time of concentration are carried out on raw ore, and copper concentrates and copper tailings are obtained; the copper concentrates are filtered to obtain a final copper concentrate product, and the copper tailings are filtered to obtain a slat tailing product. According to the method, the step of two times of magnetic separation is additionally set, after magnetic separation is carried out, elementary substance copper most of which can not be grinded to be fine is firstly produced, the ore grinding classifying burden is reduced, the grinding and levitation working procedure capacity is improved, the production cost is reduced, and the slag ore dressing recovery percentage is improved.
Description
Technical field
The invention belongs to comprehensive utilization of slag technical field, particularly relate to the method for a kind of vessel slag copper Combination of magnetic separation flotation ore dressing.
Background technology
Usual converter and converting furnace Copper in Slag amount higher, Some Domestic copper smelting plant it can be used as returning charge send copper blast-furnace reclaim copper, last waste only has copper Water Quenching Slag.Although converter and converting furnace Copper in Slag amount higher, as its copper grade of raw materials for metallurgy lower than copper concentrate, not only increase smelt energy consumption, production efficiency is smelted in impact, and comprehensive utilization of resources level is low.
The process Cu-S ore method that China commonly uses has be pyrogenic process at two: one, namely adopts the dilution of dilution stove.Owing to returning remelting, again enter smelting furnace to the objectionable impurities smelted, make objectionable impurities enrichment gradually, returning of cold slag, have a great impact metallurgical effect and smelting cost, finally cause slag viscosity to increase, Copper in Slag is higher, and smelting cost strengthens; Two is beneficiating methods, namely can obtain qualified copper concentrate through flotation, and for copper smelting by pyrometallurgy, copper recovery more than 90%, flotation tailing, as cement raw material.As the patent application of Chinese invention patent application numbers 201110275028.2, disclose one and " reclaim the Combination of magnetic separation flotation beneficiation method of copper from copper converter slag ", the method adopts magnetic separation and flotation combined beneficiation method, utilizes that coarse grain bright copper hardness is high, good toughness, difficult brokenly difficultly to grind; Copper smelting slag iron content is high, magnetic mineral content is high, and the bright copper of coarse grain belongs to the feature of non-magnetic concentration thing, and by magnetic separation, the bright copper of most of coarse grain and non magnetic ore are enriched to magnetic tailing directly can become copper concentrate, achieves good effect.But the non magnetic gangue mineral of magnetic separation procedure division also enters copper concentrate, and the Cu Concentrate Grade of generation is lower, therefore, this process still has the space of improvement.
Most domestic mining company all can produce the copper slags such as a large amount of electroslags and vessel slag every year, the copper slag that China stores up now has reached 2,000 ten thousand tons, the copper metal of hundreds of thousands ton or more than 100 ten thousand tons in these 2,000 ten thousand tons of copper slags, and the annual copper slag also will producing nearly 2,000,000 tons, and the usual way that these enterprises adopt electroslag and vessel slag is exactly: vessel slag returns to smelting furnace melting or directly store up again, and electroslag is stored up.Vessel slag return to smelting furnace again melting time, due to smelting slag viscosity increase, copper and slag separation condition are degenerated, cause smelt overall target decline.And electroslag is stored up, not only land occupation, causes environmental pollution, and the wasting of resources.As the small part cupper smelting such as Jiangxi Copper fully utilize vessel slag and electroslag gradually, comprehensive reutilization is carried out to slag, do not store up not land occupation, while reducing administrative expenses, to environment, the circulation comprehensive recycling of resource can not be achieved again.As the patent application that Chinese invention patent application number is " 201110430785.2 ", disclose one " copper converter slag reclaims screening, the joint flotation technology beneficiation method of copper ",-0.1mm undersize level product process is sized mixing, add floating agent enters flotation, and roughly select through three times, once purging selection, obtains copper concentrate product.Obtain copper concentrate by the method for the roughly selecting for three times of routine, once purging selection, its screening effeciency is lower, still there is a large amount of copper mines in mine tailing, is unfavorable for the effective utilization to the energy.
Summary of the invention
For the defect of prior art, the object of this invention is to provide the method for a kind of vessel slag copper Combination of magnetic separation flotation ore dressing.
To achieve these goals, the technical solution used in the present invention is as follows:
The invention provides the method for a kind of vessel slag copper Combination of magnetic separation flotation ore dressing, comprise the following steps:
Raw ore through ore grinding, regrind, twice classification, roughly select for twice, scan for twice, twice magnetic separation and primary cleaning, obtain copper concentrate and copper tailing, copper concentrate obtains final copper concentrate product through press filtration, and copper tailing obtains slag product from failing through filtration.
Further, described twice magnetic separation comprises a stages of magnetic separation and two stages of magnetic separation; Preferably, a stages of magnetic separation refers to that one section of classification sand setting enters magnetic separator and carries out magnetic separation, and the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, and a stages of magnetic separation product turns back to ball mill ore grinding by pipeline self; Two stages of magnetic separation refer to that the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, become copper concentrate product after the bottom land product dehydration of two stages of magnetic separation, and two stages of magnetic separation product gravity flows enter one section of classifying cyclone pump pond and carry out one section of classification.
Described twice magnetic separation is provided with two permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separators by discrepancy in elevation requirement near primary grinding, one section of classification.
The motor power (output) of described permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separator is 7.5 ~ 25KW.
Further, described twice classification comprises one section of classification and two sections of classifications; Preferably, one section of classification carries out one section of classification after referring to ore grinding, and the product after one section of classification enters one section and roughly selects, and the sand setting after one section of classification enters a stages of magnetic separation; Two sections of classifications refer to that afterproduct of regrinding carries out two sections of classifications, and two sections of classification afterproducts enter two sections and roughly select, and after two sections of classifications, sand setting returns the program of regrinding.
Further, described roughly selecting for twice comprises one section and roughly selects and roughly select with two sections; Preferably, roughly select for one section and refer to that ore pulp carries out one section and roughly selects in groove, obtain one section roughly select copper concentrate and one section roughly select copper tailing, one section roughly select copper concentrate through filter filter obtain final copper concentrate, one section of rougher tailings enters one section and scans, and scans mine tailing for one section and enters secondary grinding classification; Roughly select for two sections and refer to that two sections of classification copper tailing carry out two sections and roughly select in groove, obtain two sections roughly select copper concentrate and two sections roughly select copper tailing, roughly select copper concentrate for two sections and enter selected, roughly select copper tailing for two sections and enter two sections and scan.
Further, described scanning for twice comprises one section and scans and scan with two sections; Preferably, scan for one section and refer to that roughly select copper tailing for one section carries out one section and scan in groove, obtain one section scan copper concentrate and one section scan copper tailing, scan copper concentrate circulation for one section and be back to groove and carry out one section and roughly select, scan copper tailing for one section and carry out regrinding and enter two sections of classifications; Scan for two sections and refer to that roughly select copper tailing for two sections carries out two sections and scan in groove, obtain two sections scan copper concentrate and two sections scan copper tailing, scan copper concentrate for two sections and carry out selectedly obtaining copper concentrate, two sections are scanned copper tailing is the process of flotation tailing product introduction dewatering operation.
Further, described primary cleaning refers to that roughly select copper concentrate for two sections carries out selected in groove, obtains selected copper concentrate and selected copper tailing, and become copper concentrate after selected copper concentrate dehydration, selected copper tailing enters two sections and roughly selects.
Further, described ore grinding is adopt ball mill to carry out with regrinding.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
Add twice magnetic separation step in method of the present invention, after magnetic separation, the elemental copper that major part is difficult levigate, by the output that takes the lead in, reduces grind grading burden, improves the floating operation production capacity of mill, reduces production cost; Effective lifting grinding efficiency, enter elemental copper in flotation in addition and significantly reduce, flotation tailing grade is down to less than 0.35% by previous 0.40 ~ 0.50%, improves and selects copper comprehensive recovery.
Accompanying drawing explanation
Fig. 1 is the process chart of the method for the Combination of magnetic separation flotation of vessel slag copper shown in embodiment 1 ore dressing.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1
As shown in Figure 1, Fig. 1 is the process chart of the method for the Combination of magnetic separation flotation of vessel slag copper shown in embodiment 1 ore dressing.
The method of a kind of vessel slag copper Combination of magnetic separation flotation ore dressing, comprise the following steps: raw ore through ore grinding, regrind, twice classification, roughly select for twice, scan for twice, twice magnetic separation and primary cleaning, obtain copper concentrate and copper tailing, copper concentrate obtains final copper concentrate through filtration, and copper tailing obtains slag mine tailing through filtration.
Further, described twice magnetic separation comprises a stages of magnetic separation and two stages of magnetic separation; Preferably, a stages of magnetic separation refers to that one section of classification sand setting enters magnetic separator and carries out magnetic separation, and the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, and a stages of magnetic separation product turns back to ball mill ore grinding by pipeline self; Two stages of magnetic separation refer to that the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, become copper concentrate product after the bottom land product dehydration of two stages of magnetic separation, and two stages of magnetic separation product gravity flows enter one section of classifying cyclone pump pond and carry out one section of classification.
Described twice magnetic separation is provided with two permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separators by discrepancy in elevation requirement near primary grinding, classification.
The motor power (output) of described permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separator is 7.5 ~ 25KW.
Further, described twice classification comprises one section of classification and two sections of classifications; Preferably, one section of classification carries out one section of classification after referring to ore grinding, and the product after one section of classification enters one section and roughly selects, and the sand setting after one section of classification enters a stages of magnetic separation; Two sections of classifications refer to that afterproduct of regrinding carries out two sections of classifications, and two sections of classification afterproducts enter two sections and roughly select, and after two sections of classifications, sand setting returns the program of regrinding.
Further, described roughly selecting for twice comprises one section and roughly selects and roughly select with two sections; Preferably, roughly select for one section and refer to that ore pulp carries out one section and roughly selects in groove, obtain one section roughly select copper concentrate and one section roughly select copper tailing, roughly select copper concentrate for one section and filter through filter and obtain final copper concentrate one section of rougher tailings and enter one section and scan, scan mine tailing for one section and enter secondary grinding classification; Roughly select for two sections and refer to that two sections of classification copper tailing carry out two sections and roughly select in groove, obtain two sections roughly select copper concentrate and two sections roughly select copper tailing, roughly select copper concentrate for two sections and enter selected, roughly select copper tailing for two sections and enter two sections and scan.
Further, described scanning for twice comprises one section and scans and scan with two sections; Preferably, scan for one section and refer to that roughly select copper tailing for one section carries out one section and scan in groove, obtain one section scan copper concentrate and one section scan copper tailing, scan copper concentrate circulation for one section and be back to groove and carry out one section and roughly select, scan copper tailing for one section and carry out regrinding and enter two sections of classifications; Scan for two sections and refer to that roughly select copper tailing for two sections carries out two sections and scan in groove, obtain two sections scan copper concentrate and two sections scan copper tailing, scan copper concentrate for two sections and carry out selectedly obtaining copper concentrate, two sections are scanned copper tailing is the process of flotation tailing product introduction dewatering operation.
Further, described primary cleaning refers to that roughly select copper concentrate for two sections carries out selected in groove, obtains selected copper concentrate and selected copper tailing, and become copper concentrate after selected copper concentrate dehydration, selected copper tailing enters two sections and roughly selects.
Further, described ore grinding is adopt ball mill to carry out with regrinding.
Enter twice magnetic separation step in method of the present invention, after magnetic separation, the elemental copper that major part is difficult levigate, by the output that takes the lead in, reduces grind grading burden, improves the floating operation production capacity of mill, reduces production cost; Effective lifting grinding efficiency, enter elemental copper in flotation in addition and significantly reduce, flotation tailing grade is down to less than 0.35% by previous 0.40 ~ 0.50%, improves and selects copper comprehensive recovery.
Claims (9)
1. a method for vessel slag copper Combination of magnetic separation flotation ore dressing, is characterized in that: comprise the following steps:
Raw ore through ore grinding, regrind, twice classification, roughly select for twice, scan for twice, twice magnetic separation and primary cleaning, obtain copper concentrate and copper tailing, copper concentrate obtains final copper concentrate product through filtration, and copper tailing obtains slag product from failing through filtration.
2. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, is characterized in that: described twice magnetic separation comprises a stages of magnetic separation and two stages of magnetic separation; Preferably, a stages of magnetic separation refers to that one section of classification sand setting enters magnetic separator and carries out magnetic separation, and the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, and a stages of magnetic separation product turns back to ball mill ore grinding by pipeline self; Two stages of magnetic separation refer to that the bottom land product of a stages of magnetic separation enters two stages of magnetic separation machines and carries out two stages of magnetic separation, become copper concentrate product after the bottom land product dehydration of two stages of magnetic separation, and two stages of magnetic separation product gravity flows enter one section of classifying cyclone pump pond and carry out one section of classification.
3. the method for vessel slag copper Combination of magnetic separation flotation according to claim 2 ore dressing, is characterized in that: described twice magnetic separation is provided with two permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separators by discrepancy in elevation requirement near primary grinding, classification.
4. the method for vessel slag copper Combination of magnetic separation flotation according to claim 3 ore dressing, is characterized in that: the motor power (output) of described permanent magnetic roll assembly of roll magnetic separator cartridge type weak magnetic separator is 7.5 ~ 25KW.
5. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, is characterized in that: described twice classification comprises one section of classification and two sections of classifications; Preferably, one section of classification carries out one section of classification after referring to ore grinding, and the product after one section of classification enters one section and roughly selects, and the sand setting after one section of classification enters a stages of magnetic separation; Two sections of classifications refer to that afterproduct of regrinding carries out two sections of classifications, and two sections of classification afterproducts enter two sections and roughly select, and after two sections of classifications, sand setting returns the program of regrinding.
6. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, is characterized in that: described roughly selecting for twice comprises one section and roughly select and roughly select with two sections; Preferably, roughly select for one section and refer to that ore pulp carries out one section and roughly selects in groove, obtain one section roughly select copper concentrate and one section roughly select copper tailing, one section roughly select copper concentrate through filter filter obtain final copper concentrate, one section of rougher tailings enters one section and scans, and scans mine tailing for one section and enters secondary grinding classification; Roughly select for two sections and refer to that two sections of classification copper tailing carry out two sections and roughly select in groove, obtain two sections roughly select copper concentrate and two sections roughly select copper tailing, roughly select copper concentrate for two sections and enter selected, roughly select copper tailing for two sections and enter two sections and scan.
7. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, is characterized in that: described scanning for twice comprises one section and scan and scan with two sections; Preferably, scan for one section and refer to that roughly select copper tailing for one section carries out one section and scan in groove, obtain one section scan copper concentrate and one section scan copper tailing, scan copper concentrate circulation for one section and be back to groove and carry out one section and roughly select, scan copper tailing for one section and carry out regrinding and enter two sections of classifications; Scan for two sections and refer to that roughly select copper tailing for two sections carries out two sections and scan in groove, obtain two sections scan copper concentrate and two sections scan copper tailing, scan copper concentrate for two sections and carry out selectedly obtaining copper concentrate, two sections are scanned copper tailing is the process of flotation tailing product introduction dewatering operation.
8. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, it is characterized in that: described primary cleaning refers to that roughly select copper concentrate for two sections carries out selected in groove, obtain selected copper concentrate and selected copper tailing, become copper concentrate after the dehydration of selected copper concentrate, selected copper tailing returns and enters two sections and roughly select.
9. the method for vessel slag copper Combination of magnetic separation flotation according to claim 1 ore dressing, is characterized in that: described ore grinding is adopt ball mill to carry out with regrinding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126996A (en) * | 2015-09-15 | 2015-12-09 | 怀宁县江镇代家凹铜矿有限公司 | Copper ore crushing process |
| CN108863287A (en) * | 2018-07-27 | 2018-11-23 | 安溪中科镁基科技有限公司 | A kind of method of comprehensive utilization of copper tailing |
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| CN203678523U (en) * | 2014-01-14 | 2014-07-02 | 会理县鹏晨废渣利用有限公司 | Copper smelting waste residue recovery processing system |
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2015
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| CN102218370A (en) * | 2011-06-07 | 2011-10-19 | 大冶有色设计研究院有限公司 | Integrated process method for recycling metal copper from high-grade copper-contained furnace residues |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105126996A (en) * | 2015-09-15 | 2015-12-09 | 怀宁县江镇代家凹铜矿有限公司 | Copper ore crushing process |
| CN108863287A (en) * | 2018-07-27 | 2018-11-23 | 安溪中科镁基科技有限公司 | A kind of method of comprehensive utilization of copper tailing |
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