CN105268559A - Beneficiation method for low-grade copper sulphide ore - Google Patents
Beneficiation method for low-grade copper sulphide ore Download PDFInfo
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- CN105268559A CN105268559A CN201510789291.1A CN201510789291A CN105268559A CN 105268559 A CN105268559 A CN 105268559A CN 201510789291 A CN201510789291 A CN 201510789291A CN 105268559 A CN105268559 A CN 105268559A
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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
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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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 relates to a beneficiation method for low-grade copper sulphide ore. The method comprises the technology steps and conditions that ore grinding is carried out, and water, lime and butylamine dithiophosphate are added; flash flotation is carried out, the pH value is adjusted, and MIBC is added; roughing I and roughing II are carried out, and modified butylamine dithiophosphate and MIBC are added in flash flotation tailings; ore grinding is carried out through roughing concentrate obtained through two times of roughing; sifting I is carried out, lime is added in re-ground ore grain powder B pulp to adjust the pH value, and water glass is added; sifting II is carried out, and no additive is added; scavenging I is carried out, and sodium sulphide, butylamine dithiophosphate and MIBC are added in roughing II tailings; and scavenging II is carried out, and butylamine dithiophosphate and MIBC are added in scavenging I tailings. The beneficiation method has the beneficial effects that the flotation efficiency of the objective mineral is high, the mineral which is good in floatability and is separated in a monomer manner is preferably recycled, the phenomena of enrichment and excessive crushing of associated noble metal in a loop can be avoided, the comprehensive mineral recovery rate is high, and the flotation pulp environment is good; and the rough ore and concentrate yield is high, the separated mineral is preferably recycled, copper mineral and connected growing bodies hard to separate are effectively recycled, and the associated noble metal is efficiently recovered. The beneficiation method is applicable for processing noble metal containing copper sulphide ore not even in dissemination size.
Description
Technical field
The present invention relates to a kind of beneficiation method, particularly a kind of beneficiation method of low-grade copper sulfide ores, be suitable for the flotation applications processing the uneven copper sulfide mineral containing noble metal of disseminated grain size.
Background technology
Low-grade copper sulfide ores sorting process has FLOTATION SEPARATION and wet-leaching two kinds.Wet-leaching technique has economize energy, association valuable element comprehensive utilization ratio advantages of higher, but restricts by factors such as environmental protection, weather conditions, ore properties, process control.Floatation separation process is mainly based on preferential, mixing-preferential and iso-floatability circuit flotation flowsheet, and complex ore sometimes adopts stage grinding, stage grading, chats to process separately and mud-sand sorting etc.Grain size number is little, and the copper-sulphide ores of Khenpo feature complexity adopts ore grinding (fine grinding)-controling differential flotation process for copper to be difficult to effective recovery of the rate of recovery, particularly Precious Metals ensureing copper concentrate product copper; Adopt ore grinding (corase grind)-flotation-coarse concentrate regrinding technological process, in rough concentrate, the copper mineral of this monomer dissociation is in the process of regrinding, and is easily crossed to be milled to flotation granularity lower limit and surface is contaminated and be difficult to recovery.In addition, change flotation system current potential to strengthen the floatability of copper mine often through interpolation activator, reach the rate of recovery increasing copper metallic element, and the size of activator level directly affects final index.
Visible, thin for disseminated grain size, the Copper sulfide ore of Precious Metals, develops the valuable element such as ore-dressing technique high efficiente callback copper, gold that sorting result is good, conformability is strong, unit cost is low, be conducive to improving comprehensive resource utilization rate, be conducive to the competitiveness increasing enterprise.
The beneficiation method of for this reason seeking a kind of low-grade copper sulfide ores just seems particularly urgent.
Summary of the invention
Task of the present invention is to overcome the deficiencies in the prior art, provides a kind of beneficiation method of low-grade copper sulfide ores.There is provided one can improve copper metal recovery rate, and farthest incidentally can reclaim the beneficiation method of Precious Metals, improve Lean Copper Ores utilization rate.
Task of the present invention has been come by the following technical programs:
The beneficiation method of low-grade copper sulfide ores, processing step and condition are carried out in the following order successively:
(1) ore grinding: below all by raw ore dry weight basis per ton, by raw ore in mass ratio 1:0.6 add water, then add lime 1000 ~ 1500g, butyl ammonium aerofloat 5 ~ 6g carries out ore grinding, obtaining fineness is the ore particle powder A ore pulp that-0.074mm accounts for 55.0 ~ 60.0%;
(2) flash flotation: ore particle powder A pH values of pulp to 8 ~ 9 regulating ore grinding, adds MIBC10 ~ 20g and carries out flash flotation, obtain copper concentrate A and flash tails report;
(3) I is roughly selected: carry out roughly selecting I to flash tails report interpolation modification butyl ammonium aerofloat 15 ~ 20g, MIBC10 ~ 20g, obtain roughly selecting I concentrate and roughly selecting I mine tailing;
(4) roughly select II: roughly select that I mine tailing adds modification butyl ammonium aerofloat 8 ~ 10g, MIBC5 ~ 10g carries out roughly selecting II, obtain roughly selecting II concentrate and roughly selecting II mine tailing;
(5) ore grinding again: I concentrate will be roughly selected and roughly select II concentrate and merge and feed ball mill and carry out ore grinding again, obtaining fineness is the ore particle powder B ore pulp that-0.074mm accounts for 80.0 ~ 85.0%;
(6) selected I: add lime 500 ~ 600g adjust ph to 9 ~ 10 to the ore particle powder B ore pulp after regrinding, then add waterglass 350 ~ 400g and carry out selected I, obtain selected I concentrate and selected I mine tailing;
(7) selected II: any medicament is not added to selected I concentrate and carries out selected II, obtain copper concentrate and selected II mine tailing;
(8) I is scanned: II mine tailing adds vulcanized sodium 10 ~ 20g, butyl ammonium aerofloat 5 ~ 10g, MIBC5 ~ 10g carry out scanning I to roughly selecting, and obtains scanning I concentrate and scanning I mine tailing;
(9) II is scanned: I mine tailing adds butyl ammonium aerofloat 5 ~ 10g, MIBC5 ~ 10g carries out scanning II to scanning, and obtains scanning II concentrate and true tailings.
Percentage involved in the present invention is all weight percentage.
Compared with prior art have the following advantages and effect:
1. target minreal flotation efficiency is high, floatability target minreal priority reclamation that is good and monomer dissociation, can avoid Precious Metals enrichment in the loop and cross crushing phenomenon occurring.Adding grinding machine corase grind-flash flotation process integration based on collecting agent can effectively avoid target minreal overground, fully reclaims the target minreal of monomer dissociation and ensures its quality.Collecting agent enters grinding machine can make collecting agent butyl ammonium aerofloat act on the unsalted surface of target minreal timely and effectively on the one hand, play protective effect in advance, simultaneously can extend its action time, adapt to part target minreal and to swim performance this feature slow, improve target minreal flotation efficiency; Roughly grind on the other hand the target minreal particle of monomer dissociation can be avoided to cause because of overground sludge loss, by flash flotation can by floatability target minreal priority reclamation that is good and monomer dissociation; In addition by suitable reduction mog, Precious Metals enrichment in the loop can be avoided and cross crushing phenomenon occurring, improve comprehensive resource utilization rate.
2. target minreal comprehensive recovery is high, and flotation pulp environment is good, and rough concentrate productive rate is high.Based on productive rate extraction froth flotation-coarse concentrate regrinding technique by the many receipts-degree of depth of intergrowth dissociate-selected separation process obtains qualified concentrate containing product, improves target minreal comprehensive recovery.In modification butyl ammonium aerofloat, copper extractant (ZJ988) can react to each other with mineral surfaces copper metal ion, and proceed to flotation solution system with the form of extracted species, increase the copper ion concentration of unit volume in flotation system, optimize flotation pulp environment, simultaneously can snap action Yu Liansheng surface, improve the rate of recovery of intergrowth, increase the productive rate of rough concentrate, select technique again by coarse concentrate regrinding again, obtain qualified copper concentrate product.
3. the target minreal priority reclamation of having dissociated, refractory copper ore thing and intergrowth are effectively reclaimed, and guarantee Precious Metals high efficiente callback.Add the application of grinding machine corase grind-flash flotation process integration based on collecting agent, ensure the target minreal priority reclamation of having dissociated; The application of extraction froth flotation-coarse concentrate regrinding technique, ensures that refractory copper ore thing and intergrowth are also effectively reclaimed, thus guarantees effective recovery of copper metal; In addition, the reasonable application of suitably putting thick selected mog and MIBC can guarantee Precious Metals high efficiente callback.
Accompanying drawing explanation
Fig. 1 is the beneficiation method process chart of a kind of low-grade copper sulfide ores according to the present invention's proposition.
In accompanying drawing, each sign represents respectively:
1. raw ore 2. ore particle powder A3. copper concentrate A4. flash tails report 5. is roughly selected I concentrate 6. and is roughly selected II concentrate 7. and roughly select I mine tailing 8. and roughly select II mine tailing 9. ore particle powder B10. and scan I concentrate 11. and scan selected I mine tailing 16. of I mine tailing 12. selected II mine tailing 15. of selected I concentrate 13. copper concentrate 14. and scan II concentrate 17. true tailings a. lime b. butyl ammonium aerofloat c.MIBCd. modification butyl ammonium aerofloat e. vulcanized sodium f. waterglass
Below in conjunction with accompanying drawing, explanation is described in further detail.
Detailed description of the invention
As shown in Figure 1, the beneficiation method of a kind of low-grade copper sulfide ores of the present invention, undertaken by following processing step and condition successively:
(1) ore grinding: below all by raw ore dry weight basis per ton, by raw ore 1 in mass ratio 1:0.6 add water, add lime a1000 ~ 1500g again, butyl ammonium aerofloat b5 ~ 6g carries out ore grinding, obtaining fineness is the ore particle powder A2 ore pulp that-0.074mm accounts for 55.0 ~ 60.0%;
(2) flash flotation: ore particle powder A2 pH values of pulp to 8 ~ 9 regulating ore grinding, adds MIBCc10 ~ 20g and carries out flash flotation, obtain copper concentrate A3 and flash tails report 4;
(3) roughly select I: add modification butyl ammonium aerofloat d15 ~ 20g to flash tails report 4, MIBCc10 ~ 20g carries out roughly selecting I, obtain roughly selecting I concentrate 5 and roughly selecting I mine tailing 7;
(4) roughly select II: roughly select that I mine tailing 7 adds modification butyl ammonium aerofloat d8 ~ 10g, MIBCc5 ~ 10g carries out roughly selecting II, obtain roughly selecting II concentrate 6 and roughly selecting II mine tailing 8;
(5) ore grinding again: I concentrate 5 will be roughly selected and roughly select II concentrate 6 and merge and feed ball mill and carry out ore grinding again, obtaining fineness is the ore particle powder B9 ore pulp that-0.074mm accounts for 80.0 ~ 85.0%;
(6) selected I: add lime a500 ~ 600g adjust ph to 9 ~ 10 to the ore particle powder B9 ore pulp after regrinding, then add waterglass f350 ~ 400g and carry out selected I, obtain selected I concentrate 12 and selected I mine tailing 15;
(7) selected II: any medicament is not added to selected I concentrate 12 and carries out selected II, obtain copper concentrate 13 and selected II mine tailing 14;
(8) scanning I: II mine tailing 8 adds vulcanized sodium e10 ~ 20g, butyl ammonium aerofloat b5 ~ 10g, MIBCc5 ~ 10g carry out scanning I to roughly selecting, obtaining scanning I concentrate 10 and scanning I mine tailing 11;
(9) II is scanned: add butyl ammonium aerofloat b5 ~ 10g, MIBCc5 ~ 10g carry out scanning II to scanning I mine tailing 11, obtain scanning II concentrate 16 and true tailings 17.
2:1 is composite in mass ratio forms by butyl ammonium aerofloat and copper extractant ZJ988 for described modification butyl ammonium aerofloat d.
Described selected I mine tailing 15 returns to be roughly selected II and selects.
Described selected II mine tailing 14 returns selected I and selects.
Described I concentrate 10 of scanning returns and roughly selects II and select.
Described II concentrate 16 of scanning is back to and scans I and select.
Embodiment 1:
Copper mine used belongs to containing arsenic low copper type chalcopyrite ore, and its chemical composition (wt%) is as follows: cupric 0.48%, sulfur-bearing 4.38%, containing golden 0.19g/t, and argentiferous 5.2g/t.Copper material phase analysis is as follows: secondary copper sulfide accounts for 69.29%, and chalcopyrite accounts for 18.10%, and cupric oxide accounts for 12.61%.
By raw ore dry weight basis per ton, first raw ore 1 is added adjusting agent lime a1000g, butyl ammonium aerofloat b5g successively, be the breeze grain A2 that-0.074mm accounts for 55.0% through ball mill ore grinding to mog, regulate pH to 8, add foaming agent MIBCc10g, obtain copper concentrate A3 and flash tails report 4 through flash flotation; Flash tails report 4 obtains roughly selecting I concentrate 5, roughly selects II concentrate 6 and roughly selects I mine tailing 7 through roughly selecting I operation and roughly selecting II operation, roughly select II mine tailing 8; Roughly select II mine tailing 8 to obtain scanning I concentrate 10, scan II concentrate 16 and scan I mine tailing 11 through scanning I operation and scanning II operation, scan II mine tailing 16; Roughly select I concentrate 5 and roughly select II concentrate 6 integrate with ball mill again ore grinding to mog be that the breeze grain B9 that-0.074mm accounts for 80.0%, breeze grain B9 obtain selected I concentrate 12 of copper, copper concentrate 13, selected I mine tailing 15, selected II mine tailing 14 through selected I and selected II; Selected I mine tailing 15 and scan I concentrate 10 and merge to be back to and roughly select II, selected II mine tailing 14, scan II concentrate 16 and be back to an operation successively, wherein add collector modified butyl ammonium aerofloat d by collecting agent butyl ammonium aerofloat b and copper extractant ZJ988 in mass ratio=2:1 is composite to be formed, modification butyl ammonium aerofloat d consumption 15g, MIBCc10g; Roughly select II interpolation modification butyl ammonium aerofloat d8g, foaming agent MIBCc5g; Scan I interpolation adjusting agent vulcanized sodium e10g, collecting agent butyl ammonium aerofloat b5g, foaming agent MIBCc5g; Scan II interpolation collecting agent butyl ammonium aerofloat consumption 5g/t, foaming agent MIBC consumption 5g/t; PH value adjusting agent lime consumption 500g/t adjust pH to 9 is added in selected I operation, scattered inhibitor waterglass consumption 350g/t.
Embodiment 2: by raw ore dry weight basis per ton, first raw ore is added successively adjusting agent lime consumption 1500g/t and butyl ammonium aerofloat consumption 6g/t, 60.0% is accounted for mog for-0.074mm through ball mill ore grinding, ball mill ore discharging (pH=9) adds foaming agent MIBCc consumption 20g/t, obtains copper concentrate A3 and flash tails report 4 through flash flotation operation; Flash tails report 4 obtains roughly selecting I concentrate 5, roughly selects II concentrate 6 and roughly selects I mine tailing 7 through roughly selecting I operation and roughly selecting II operation, roughly select II mine tailing 8; Roughly select II mine tailing 8 to obtain scanning I concentrate 10 through scanning I operation and scanning II operation, scan II concentrate 16 and scan I mine tailing 11, true tailings 17; Roughly select I concentrate and roughly select II concentrate and integrate with ball mill through regrinding to mog as after-0.074mm accounts for 85.0%, carry out selected I and selected II and obtain copper and select I concentrate 12, copper concentrate 13 and selected I mine tailing 15, selected II mine tailing 14 of copper; Selected I mine tailing 15 and scan I concentrate 10 and merge to be back to and roughly select II, selected II mine tailing 14, scans II concentrate 16 and is back to an operation successively.Wherein, roughly select I interpolation collector modified butyl ammonium aerofloat d by collecting agent butyl ammonium aerofloat and copper extractant ZJ988 in mass ratio=2:1 is composite to be formed, 20g, foaming agent MIBCc20g; Roughly select II interpolation modification butyl ammonium aerofloat d10g, foaming agent MIBCc10g; Scan I interpolation adjusting agent vulcanized sodium e20g, collecting agent butyl ammonium aerofloat b10g, foaming agent MIBCc10g; Scan II operation and add collecting agent butyl ammonium aerofloat b10g, foaming agent MIBCc10g; Selected I adds pH value adjusting agent lime a600g adjust pH to 10, scattered inhibitor waterglass f400g.
Adopt above technical scheme, the main technique index that embodiment 1 obtains is: copper concentrate Cu grade 23.08%, Au grade 6.66g/t, copper recovery 86.92%, gold recovery 58.95%; Embodiment 2 only have dosing and mog different from embodiment 1, other condition is identical with embodiment 1, and the main technique index that embodiment 2 obtains is: copper concentrate Cu grade 21.78%, Au grade 6.09g/t, copper recovery 89.24%, gold recovery 62.47%.The performance of above two embodiments shows, copper and Precious Metals element in energy high efficiente callback low-grade copper sulfide ores of the present invention.
The each embodiment result of the test of table 1
Note *-unit is g/t.
The performance of above two embodiments shows, copper recovery is up to 85% ~ 92% and the copper content of copper concentrate is greater than 18%.
As mentioned above, just the present invention can be realized preferably.Above-described embodiment is only the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; other changes made under not deviating from Spirit Essence of the present invention and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, be included in protection scope of the present invention.
Claims (6)
1. the beneficiation method of low-grade copper sulfide ores, comprises following processing step and condition:
(1) ore grinding: below all by raw ore dry weight basis per ton, by raw ore [1] in mass ratio 1:0.6 add water, add lime [a] 1000 ~ 1500g again, butyl ammonium aerofloat [b] 5 ~ 6g carries out ore grinding, obtaining fineness is ore particle powder A [2] ore pulp that-0.074mm accounts for 55.0 ~ 60.0%;
(2) flash flotation: ore particle powder A [2] pH values of pulp to 8 ~ 9 regulating ore grinding, adds MIBC [c] 10 ~ 20g and carries out flash flotation, obtain copper concentrate A [3] and flash tails report [4];
(3) I is roughly selected: carry out roughly selecting I to flash tails report [4] interpolation modification butyl ammonium aerofloat [d] 15 ~ 20g, MIBC [c] 10 ~ 20g, obtain roughly selecting I concentrate [5] and roughly selecting I mine tailing [7];
(4) roughly select II: roughly select that I mine tailing [7] adds modification butyl ammonium aerofloat [d] 8 ~ 10g, MIBC [c] 5 ~ 10g carries out roughly selecting II, obtain roughly selecting II concentrate [6] and roughly selecting II mine tailing [8];
(5) ore grinding again: I concentrate [5] will be roughly selected and roughly select II concentrate [6] and merge and feed ball mill and carry out ore grinding again, obtaining fineness is ore particle powder B [9] ore pulp that-0.074mm accounts for 80.0 ~ 85.0%;
(6) selected I: ore particle powder B [9] ore pulp after regrinding adds lime [a] 500 ~ 600g adjust ph to 9 ~ 10, add waterglass [f] 350 ~ 400g again and carry out selected I, obtain selected I concentrate [12] and selected I mine tailing [15];
(7) selected II: any medicament is not added to selected I concentrate [12] and carries out selected II, obtain copper concentrate [13] and selected II mine tailing [14];
(8) I is scanned: II mine tailing [8] adds vulcanized sodium [e] 10 ~ 20g, butyl ammonium aerofloat [b] 5 ~ 10g, MIBC [c] 5 ~ 10g carries out scanning I to roughly selecting, and obtains scanning I concentrate [10] and scanning I mine tailing [11];
(9) II is scanned: carrying out scanning II to scanning I mine tailing [11] interpolation butyl ammonium aerofloat [b] 5 ~ 10g, MIBC [c] 5 ~ 10g, obtaining scanning II concentrate [16] and true tailings [17].
2. method according to claim 1,2:1 is composite in mass ratio forms by butyl ammonium aerofloat and copper extractant ZJ988 to it is characterized in that described modification butyl ammonium aerofloat [d].
3. method according to claim 1, is characterized in that described selected I mine tailing [15] returns and roughly selects II and select.
4. method according to claim 1, is characterized in that described selected II mine tailing [14] returns selected I and selects.
5. method according to claim 1, is characterized in that described I concentrate [10] of scanning returns and roughly selects II and select.
6. method according to claim 1, is characterized in that described II concentrate [16] of scanning returns and scans I and select.
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| CN105689146A (en) * | 2016-03-07 | 2016-06-22 | 紫金矿业集团股份有限公司 | Low-alkalinity flotation separation method for pyrite activated by Cu2+ and chalcocite |
| CN106362868A (en) * | 2016-11-14 | 2017-02-01 | 玉溪矿业有限公司 | Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores |
| CN107138270A (en) * | 2017-04-20 | 2017-09-08 | 厦门紫金矿冶技术有限公司 | A kind of fine grain teeth cloth Copper Ores floatation process |
| CN107282312A (en) * | 2017-06-20 | 2017-10-24 | 厦门紫金矿冶技术有限公司 | A kind of fine copper-sulphide ores sorting process of disseminated grain size |
| CN108672101A (en) * | 2018-07-09 | 2018-10-19 | 玉溪矿业有限公司 | A kind of method of sulphur active flotation in copper sulfide sulphur mine nominal group process |
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