CN101402071A - Electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine - Google Patents
Electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine Download PDFInfo
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Abstract
The invention relates to an ore dressing technology for separating copper, lead and zinc in complex polymetallic sulphide ores, in particular to an electric potential modulation and preferential flotation process for copper-lead-zinc sulphide ores, which comprises the steps of copper, lead and zinc selection; copper is preferentially floated; the electric potential Eh of an ore slurry is between 35 below zero and 15 below zero mV; the PH value of the ore slurry is between 7.50 and 8.50; LP-01 is used as a collecting agent; and YN and ZnSO4 are used as inhibitors. The process has the advantages of solving the problems that the prior flotation process has large difficulty in separating the copper and lead and the copper and zinc, poor quality of concentrated ore and higher cost.
Description
Technical field
The present invention relates to the technique of preparing, particularly electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of complex multi-metal sulphide ore FLOTATION SEPARATION copper, lead, zinc.
Background technology
Because the difficulty that copper-lead separates, copper-zinc separates is bigger, because most copper, lead, zinc polymetal mineral intergrowth individual metals constituent contents are on the low side, belong to the close mineral of macroscopic property because of copper sulfide, lead, zinc mineral simultaneously, difficulty is bigger when separated from one another, cause copper sulfide mineral to be difficult to effectively separate like this with the lead-zinc sulfide ore thing, show in the production it is that the rate of recovery of main metal in copper, lead, the zinc concentrate is on the low side, simultaneously the impurity content height.Multi-metal sulfide for these copper, lead, zinc symbiosis or association, most mines otherwise only sub-elect single copper concentrate (as cupric about 23%, leaded more than 2%, contain zinc more than 4.5%), sub-elect lead concentrate and zinc concentrate (as lead concentrate cupric 4~20%), because of the big and not yet in effect exploitation of ore dressing difficulty, have only the minority mine to carry out the sorting of copper-lead-zinc.Even so, the ore dressing plant of having carried out copper-lead-zinc sorting adopts copper-lead to mix floating-copper-lead to separate-floating again zinc technology and copper-lead-zinc controling differential flotation process for copper more, because copper sulfide mineral is close with vulcanized lead mineral floatability, and the zinc sulfide mineral floatability is relatively poor, generally when handling copper, lead, zinc polymetal sulphide ore, often elect copper-lead as bulk concentrate, and then carry out copper-lead and separate, floating at last zinc.Although can obtain single copper concentrate like this, when separating, to adopt copper-lead the potassium bichromate etc. of environmental pollution to suppress lead minerals, and copper-plumbous separating effect is also relatively poor simultaneously, and the copper concentrate lead that is obtained, zinc content height also can influence the rate of recovery of lead, zinc; And traditional copper-lead-zinc controling differential flotation process for copper, the xanthates that adopt are made the copper mineral collecting agent more, are difficult to copper mineral is effectively separated with plumbous zinc mineral, can have influence on the rate of recovery of lead, zinc master metal, the quality of copper concentrate is not high yet simultaneously, and this makes that the whole synthesis utilization rate of this type of resource is not high.
Use more copper-lead-zinc controling differential flotation process for copper at present, it is simple and index flow process preferably, can not realize all the highest and copper of copper, lead, zinc recovery, lead, all best problem of zinc master grade simultaneously but also exist, also to have the relatively poor and higher defective of cost of concentrate quality.
Chinese invention patent " lead zinc sulphur ore potential-controlled flotation technology ", the patent No. 2004100145740 discloses a kind of potential-controlled flotation technology, it has only solved the FLOTATION SEPARATION of plumbous zinc in the sulphide ore, can't be applicable to many metals FLOTATION SEPARATION in the plumbum-zinc vulcanizing mine.The FLOTATION SEPARATION of plumbous zinc with respect to copper-lead separate, copper-zinc separation is much easier because copper sulfide, lead, zinc mineral belong to the close mineral of macroscopic property, difficulty is bigger when separated from one another, so this patent scope of application is narrower.
Summary of the invention
The objective of the invention is to solve existing floatation process copper-lead, big, poor, the cost problem of higher of concentrate quality of copper-zinc separating difficulty, a kind of economy, suitable, simple, the good electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of separating effect are provided.
The present invention realizes that goal of the invention takes technical scheme: electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine, comprising and select copper, lead, zinc step, preferentially floating copper, pulp potential Eh is-15~-35mV, slurry pH are 7.50~8.50, use collecting agent to be LP-01, inhibitor is YN+ZnSO
4
Secondly floating plumbous, pulp potential Eh is-250~-320mV, slurry pH are 11.00~12.00, use collecting agent to be SN-9
#, inhibitor is YN+ZnSO
4
Select in the zinc step pulp potential Eh be-260~-330mV, slurry pH are 11.00~12.00, use activator to be CuSO
4, collecting agent is a butyl xanthate;
Use foaming agent to be LQ-01 when floating copper;
Using foaming agent when floating lead is 2
#Oil;
The floating plumbous preceding lime that adds is regulated pulp potential Eh and slurry pH;
Add lime before the floating zinc and regulate pulp potential Eh and slurry pH;
Beneficiation wastewater is handled through PAM and alum, and charcoal absorption recycles.
As seen, current potential and pH value are bigger to preferential floating copper influence from table 1, the rate of recovery and factors such as grade, impurity content of copper in the comprehensive more floating copper rough concentrate, and selection current potential Eh is-15~-35mv, the pH value is 7.50~8.50.
Table 1 copper is roughly selected current potential and pH value condition test result
Adopt the LP-01 of high selectivity to make copper mineral collecting agent, (YN+ZnSO
4) current potential of making plumbous zinc sulfur mineral adjusts agent and inhibitor, be-15 at pulp potential Eh~-35mV, slurry pH are 7.50~8.50 interval diffeential floatation copper sulfide minerals; In the plumbous circulation of choosing, press down zinc by force, promptly be-250 at pulp potential Eh~-320mV, slurry pH are under 11.00~12.00 the condition, by YN and ZnSO
4Composite restrainer is strengthened sulphide ores such as suppressing zincblende and pyrite, adopts the SN-9 that with this understanding lead minerals is had good collecting ability
#Medicament is floating plumbous; Floating plumbous back mine tailing slurry be-260 at pulp potential Eh~-330mV, slurry pH are that employing copper sulphate is made activator under 11.00~12.00 the condition, butyl xanthate is made collecting agent flotation zinc sulfide mineral.
The key points for operation that select plumbous circulation to hold are: guarantee plumbous primary slurry current potential Eh be-250~-320mV, slurry pH is 11.00~12.00 (not being foam pH values), must not be lower than 11.00, the plumbous last selected lime that must not break will guarantee that equally slurry pH must not be lower than 12.00.To notice during operation that lead is roughly selected and want " duty is scraped bubble, the shallow bubble of scraping " that float if any zinc mineral, one will notice whether pulp potential Eh and slurry pH put in place, and two will note collecting agent SN-9
#Too whether consumption big (can suitably reduce its consumption too greatly).
The key points for operation that select zinc circulation to hold are: in general, select zinc ore slurry current potential Eh be-260~-320mV, slurry pH should not surpass 12.5, as selects the zinc pH values of pulp higher, can be by increase CuSO
4Solve with the xanthate consumption.
The present invention adopts the LP-01 of high selectivity to make copper mineral collecting agent, (YN+ZnSO
4) combination medicament is inhibitor, selects the SN-9 that lead minerals is had good selectivity and collecting ability for use
#Do the lead minerals collecting agent, adopt lime and (YN+ZnSO
4) combination medicament adjusting pulp potential Eh and slurry pH, be-15 at pulp potential Eh~-35mV, slurry pH are 7.50~8.50 interval diffeential floatation copper sulfide minerals, be-250 at pulp potential Eh~-that 320mV, slurry pH are that 11.00~12.00 condition presses down zinc is floating plumbous, floating plumbous back mine tailing slurry be-260 at pulp potential Eh~-330mV, slurry pH are under 11.00~12.00 the condition, employing CuSO
4Make activator, butyl xanthate is made collecting agent flotation zinc sulfide mineral, has realized the efficient separation of copper, lead, zinc multi-metal sulfide.
The copper sulfide mineral collecting agent LP-01 that the present invention adopts is to sulphide ore poor selectivity such as lead zinc sulphur ore and troilite, and (YN+ZnSO
4) combination medicament can effectively eliminate ore and be present in Pb in the ore pulp because of oxidation
2+The inhibition to zinc, sulfur mineral is strengthened in the influence of ion, makes the electric potential regulating diffeential floatation of complicated copper, lead, zinc polymetal sulphide ore separate to become and carries out easily; Adopt pulp potential Eh and two parameter precisions of slurry pH to size mixing, be difficult to the accurate defective of grasping when having avoided adopting simple slurry pH to make indication parameter; Realized in the beneficiation wastewater factory that 100% is recycling, reduced effluxing of beneficiation wastewater, be consistent with the requirement of current " energy-saving and emission-reduction "; Realized the fast preferential sorting of copper-lead zinc, the purpose mineral are fast thorough emersion in flotation circuit separately, has avoided the vicious circle of chats and the unnecessary consumption of floating agent, belongs to short flow process ore dressing, meets energy-conservation needs; The floating agent high-efficiency cleaning that adopts meets the requirement of cleaner production; Stable technical process, strong to ore adaptability, season, the temperature difference was little to the index influence.
Adaptability of the present invention is strong, and production target is stable, not only recyclable copper, and can significantly improve the quality of copper, lead, zinc concentrate and the rate of recovery of copper, lead, zinc, and significantly reduce production costs, the raising level of profitability is not polluted natural environment.
Can reach ten grades of product requirements (YB112-82) by the main performance assessment criteria of production of copper concentrate of the present invention, and the main performance assessment criteria of copper concentrate that adopts traditional technology to obtain can only reach 13 grades of product requirements (YB112-82), differs three ranks.
Certain company is by the underground test manufacture of the present invention half a year, nearly 70,000,000 yuan of the new profit, remarkable in economical benefits.
The specific embodiment
When all meeting floating copper in following examples pulp potential Eh be-15~-35mV, slurry pH are 7.50~8.50, when floating plumbous pulp potential Eh be-250~-320mV, slurry pH are 11.00~12.00, when selecting zinc pulp potential Eh be-260~-330mV, slurry pH are 11.00~12.00 conditions.
Embodiment one:
Raw ore is a kind of with chalcopyrite, galena, zincblende and contain the plumbum-zinc vulcanizing mine of associated silver (gold) noble metal, and silver is stronger with the copper mineral correlation, and its head grade is: Cu0.91%, Pb0.95%, Zn10.63%, Ag171g/t.
When ball milling, add inhibitor ZnSO
41000g/t and YN 1000g/t, mog-200 order is 83%, adds collecting agent LP-01 21g/t, foaming agent LQ-01 7g/t, preferential emersion copper mineral, the copper rough concentrate of emersion add lime ore pulp are regulated and control current potential, and carry out twice selected, each lime consumption 100g/t; Carry out twice bronze medal after copper is roughly selected and scan, add LP-01 7g/t at every turn.Select after the copper, in ore pulp, add lime 6000g/t current potential is regulated and control, add inhibitor ZnSO
41000g/t and YN1000g/t add collecting agent diethyldithiocarbamate 20g/t, add foaming agent 2
#Oil 7g/t carries out the lead minerals flotation, to the plumbous rough concentrate of emersion carry out five times selected, second, the 4th selected adding lime 500g/t regulation and control pulp potential wherein, and add inhibitor ZnSO
4300g/t and YN300g/t; Carry out twice lead after lead is roughly selected and scan, add diethyldithiocarbamate 5g/t at every turn.Judge whether to add lime regulation and control pulp potential according to the ore pulp concrete condition after choosing is plumbous, ore pulp need not add lime regulation and control current potential after example one choosing was plumbous, added activator CuSO
4600g/t, collecting agent butyl xanthate 130g/t carries out the zinc mineral flotation, and it is selected that the zinc rough concentrate of selecting is carried out primary blank; Zinc carries out scanning for twice after roughly selecting, scan dosing for the first time and be roughly select 1/3, scan for the second time dosing for scan for the first time 1/3.Closed circuit sorting the results are shown in Table 2:
Table 2:
*Annotate: the unit of Ag is g/t.
Embodiment two:
To the raw ore of another different grades, compare the different copper grades that are mainly reflected in of original ore property with example one and rise, form the multi-metal complex minerals of Cu, Pb and Zn difficulty and select sulphide ore.When ball milling, add inhibitor ZnSO
41000g/t and YN 1000g/t, mog-200 order is 83%, adds collecting agent LP-01 49g/t, foaming agent LQ-01 14g/t, preferential emersion copper mineral, the copper rough concentrate of emersion add lime ore pulp are regulated and control current potential, and carry out twice selected, each lime consumption 100g/t; Copper carries out twice bronze medal after roughly selecting to be scanned, and scans a dosing and is: LP-01 14g/t, scan two dosings and be: LP-01 7g/t.Select after the copper, in ore pulp, add lime 8000g/t current potential is regulated and control, add inhibitor ZnSO
42000g/t and YN 2000g/t add collecting agent diethyldithiocarbamate 20g/t, add foaming agent 2
#Oil 7g/t carries out the lead minerals flotation, to the plumbous rough concentrate of emersion carry out five times selected, wherein second, the 4th selected adding lime 500g/t regulation and control pulp potential, selected adding inhibitor ZnSO for the second time
4300g/t and YN300g/t, the 4th selected adding inhibitor ZnSO
4200g/t and YN200g/t; Carry out twice lead after lead is roughly selected and scan, add diethyldithiocarbamate 5g/t at every turn.Judge whether to add lime regulation and control pulp potential according to the ore pulp concrete condition after choosing is plumbous, ore pulp need not add lime regulation and control current potential after example three choosings were plumbous, added activator CuSO
4900g/t, collecting agent butyl xanthate 210g/t, foaming agent 2
#Oil 63g/t carries out the zinc mineral flotation, and it is selected that the zinc rough concentrate of selecting is carried out primary blank; Zinc carries out scanning for twice after roughly selecting, scan dosing for the first time and be roughly select 1/3, scan for the second time dosing for scan for the first time 1/3.Closed circuit sorting the results are shown in Table 3:
Table 3:
*Annotate: the unit of Ag is g/t.
From table 2, table 3, can find out: adopt embodiments of the invention one, two, promptly in grinding machine, add an amount of inhibitor ZnSO
4And YN, add the more weak but good collecting agent LP-01 of selectivity of collecting ability when sorting, supporting use foaming agent LQ-01 simultaneously, preferential emersion copper mineral; Choosing adds an amount of lime when plumbous to be regulated and control pulp potential, adds the collecting agent diethyldithiocarbamate again, with the emersion lead minerals; When selecting zinc, judge whether to add lime as the case may be pulp potential is regulated and control, add the collecting agent butyl xanthate again, with the emersion zinc mineral.Finally realize effective separation of copper, lead, zinc by the present invention, most importantly realized the separation of copper-lead, copper zinc, thereby reached the purpose of product high-quality high-recovery.This invention has processing cost advantage low, applied widely, be a kind of economy, simple, be suitable for, the flotation process of the good Cu-Pb-Zn complex sulphide ore of separating effect.
Hold within not being described in detail in this specification and be the known prior art of this area professional and technical personnel.
Claims (8)
1, electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine comprises and selects copper, lead, zinc step, it is characterized in that: preferentially floating copper, pulp potential Eh is-15~-35mV, slurry pH are 7.50~8.50, use collecting agent to be LP-01, inhibitor is YN+ZnSO
4
2, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 1, it is characterized in that: secondly floating plumbous, pulp potential Eh is-250~-320mV, slurry pH are 11.00~12.00, use collecting agent to be SN-9
#, inhibitor is YN+ZnSO
4
3, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 1, it is characterized in that: select in the zinc step pulp potential Eh be-260~-330mV, slurry pH are 11.00~12.00, use activator to be CuSO
4, collecting agent is a butyl xanthate.
4, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 1, it is characterized in that: use foaming agent to be LQ-01 when floating copper.
5, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 2, it is characterized in that: using foaming agent when floating lead is 2
#Oil.
6, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 2, it is characterized in that: the floating plumbous preceding lime that adds is regulated pulp potential Eh and slurry pH.
7, according to the described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine of claim 3, it is characterized in that: add lime before the floating zinc and regulate pulp potential Eh and slurry pH.
8, according to claim 1 or 2 or 3 described electric potential regulating and controling differential flotation process for copper-plumbum-zinc vulcanizing mine, it is characterized in that: beneficiation wastewater is handled through PAM and alum, and charcoal absorption recycles.
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