CN106881201B - It is a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method - Google Patents
It is a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method Download PDFInfo
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- CN106881201B CN106881201B CN201710045818.9A CN201710045818A CN106881201B CN 106881201 B CN106881201 B CN 106881201B CN 201710045818 A CN201710045818 A CN 201710045818A CN 106881201 B CN106881201 B CN 106881201B
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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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
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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
- B03D2203/04—Non-sulfide ores
Abstract
The present invention announces a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method, after Copper-lead mixed concentrate regrinds reagent removal using active carbon, it sequentially adds oxidant, selective precipitation agent and collecting agent and carries out copper-lead FLOTATION SEPARATION, oxidant used can adjust oxidation of ore pulp reduction potential between galena and the oxidation critical potential of chalcopyrite, thus selective oxidation galena surface；Precipitating reagent used is the sodium salt or sylvite of phosphorous acid group, can be precipitated in the stable lead phosphate hydrophily of galena Surface Creation, makes galena by strong inhibition, realizes that suppression lead floats copper.Oxidant used in the present invention and selective precipitation agent are non-toxic medicament, and invented technology has the advantages that good, medicament asepsis environment-protecting of Cu-Pb separation effect etc. is multiple.
Description
Technical field
It a kind of is realized the present invention relates to technical field of beneficiation more particularly to based on surface oxidation-selective precipitation principle
Copper-lead flotation separation method.
Background technique
Copper-lead FLOTATION SEPARATION is always the technical problem of non-ferrous metal ore field face, currently, copper-lead FLOTATION SEPARATION master
To use following two method:
Potassium bichromate is added after concentrate reagent removal in method one, Copper-lead mixed concentrate, thus, selective depression galena floats
Select chalcopyrite, principle are as follows: potassium bichromate can aoxidize galena surface, and precipitate in its Surface Creation plumbous chromate hydrophily,
It is suppressed galena；
Cyanide is added after concentrate reagent removal in method two, Copper-lead mixed concentrate, thus, selective depression chalcopyrite, flotation
Galena out, principle are as follows: cyanide is suppressed its surface hydrophilic in chalcopyrite Surface Creation copper cyano complex.
The separating effect of both above-mentioned flotation separation methods is preferable, and still, bichromate and cyanide all have relatively by force
Toxicity will cause serious pollution to environment, both copper-lead floatation separation process all receive strong limitation in recent years, therefore,
It needs to find a kind of efficient, nontoxic Flotation Separation of Cu-Pb scheme.
Summary of the invention
The embodiment of the invention provides a kind of copper-lead FLOTATION SEPARATION sides realized based on surface oxidation-selective precipitation principle
Method, to realize efficient, the nontoxic FLOTATION SEPARATION to Copper-lead mixed concentrate.
The invention adopts the following technical scheme:
A kind of copper-lead flotation separation method, which comprises
Step a, active carbon is added in Copper-lead mixed concentrate to be separated, and carries out regrinding reagent removal；
Step b, it will be poured into flotation cell by regrinding the copper-lead ore pulp that reagent removal is handled, the copper-lead ore pulp carried out
Dilution, is added oxidant into the copper-lead ore pulp after dilution, applies preset oxidation after stirring for the copper-lead ore pulp of oxidant is added
Selective precipitation agent and collecting agent is successively added in reduction potential into the copper-lead ore pulp for be applied with preset oxidation-reduction potential, to
Inflate the first scheduled duration of roughing after, isolated rougher concentration and rougher tailings, wherein the selective precipitation agent be containing
The sodium salt solution of phosphate radical and/or potassium salt soln containing phosphate radical；
Step c, triple cleaning processing, isolated copper concentrate are carried out to the rougher concentration；Wherein, after selected for the first time
Obtained selected I concentrate as second it is selected give mine, selected I tailing is obtained after selected for the first time and is returned as essence for the first time
Mine is given in choosing, second it is selected after obtained selected II concentrate as third time it is selected to mine, obtained after selected for the second time
Selected II tailing returns selected to mine as second, and the selected III concentrate obtained after third time is selected is copper concentrate, third
It is secondary it is selected after obtained selected III tailing return as third time it is selected to mine；Selected for the first time oxidant, selectivity used
The dosage of precipitating reagent and collecting agent is the half of dosage used in roughing, subsequent selected twice oxidant, selective precipitation agent used
Dosage with collecting agent is the half of last selected dosage used；
Step d, collecting agent is added into the rougher tailings, the isolated lead after gas overcharging scans the second scheduled duration
Concentrate, wherein the scavenger concentrate obtained after scanning is returned as selected for the first time to mine, and the tailing of scanning obtained after scanning is
Lead concentrate.
In embodiments of the present invention, one roughing work is carried out to copper-lead concentrate using surface oxidation-selective precipitation method
Skill and triple cleaning technique, thus selective oxidation galena surface, and it is hydrophilic in galena Surface Creation using precipitating reagent
Property lead phosphate precipitating, in turn, be finally recovered out required copper concentrate and lead concentrate, thus, promoted FLOTATION SEPARATION effect, and
Oxidant and precipitating reagent are non-toxic medicament, thus, improve the feature of environmental protection of FLOTATION SEPARATION.
Optionally, the oxidant is one of potassium permanganate sodium peroxide or potassium hyperchlorate or multiple combinations.
Optionally, the selective precipitation agent is sodium phosphate, sodium pyrophosphate, sodium tripolyphosphate, sodium trimetaphosphate, six inclined phosphorus
One of sour sodium, potassium phosphate, potassium pyrophosphate, potassium tripolyphosphate, three potassium metaphosphates or hexa metaphosphoric acid potassium or multiple combinations.
Oxidant of the present invention can selective oxidation galena surface, and selective precipitation agent is to galena
The bichromate of inhibiting effect than in the prior art is strong, and selectivity is better than bichromate, thus, increase galena surface hydrophilic
Property, it is suppressed its flotation, and chalcopyrite surface is unaffected, the hydrophobic floating of chalcopyrite under collecting agent effect.In addition, this
Inventing oxidant-precipitating reagent used is non-toxic medicament, and invented technology has good, medicament asepsis environment-protecting of Cu-Pb separation effect etc.
Multiple advantage.
It optionally, is 300-500g/t regrinding the dosage that active carbon is added when reagent removal processing.
In embodiments of the present invention, the active carbon of the dosage can preferably promote the effect for regrinding reagent removal, and adsorb mine
Superfluous medicament in slurry, and medicament is promoted to desorb from mineral surfaces.
Optionally, the dosage that oxidant is added when roughing is handled is 200-300g/t, and the agent of selective precipitation agent is added
Amount is 400-600g/t, and the dosage that collecting agent is added is 100-180g/t.
In embodiments of the present invention, the oxidant of the dosage and selective precipitation agent are able to ascend Cu-Pb separation efficiency.
Optionally, the dosage for the collecting agent being added when scanning processing is 50-90g/t.
Optionally, copper-lead ore pulp mass concentration is 28%-35% after dilution.
In embodiments of the present invention, dilution can be convenient for Cu-Pb separation.
It optionally, is 500-700mv for the preset oxidation-reduction potential that the copper-lead ore pulp of oxidant applies is added.
In embodiments of the present invention, by the adjustment to copper-lead pulp potential, it can reduce medicament use to a certain extent
Amount optimizes floatation indicators, and can effectively strengthen the inhibitory effect to fine-grained lead minerals.
Optionally, mixing time is 2-3min after each dosing.
Optionally, first scheduled duration is 4-7min, and second scheduled duration is 3-5min.
In embodiments of the present invention, by stirring can promote dilution effect and medicament dissolution efficiency so that medicament with
Copper-lead ore pulp is reacted.
As technical effect more preferably technical solution:
It is a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method, which is characterized in that the method
Steps are as follows:
(1) 300 ~ 500g/t active carbon is added in Copper-lead mixed concentrate to carry out regrinding reagent removal, regrinds time 1-2 minute；
(2) ore pulp will be regrinded in step (1) to pour into flotation cell and add water that ore pulp mass concentration is adjusted to 28%-35%, is stirred
It mixes 1-2 minutes, adds 200-300g/t oxidant, stir 2-3 minutes, oxidation of ore pulp reduction potential is adjusted to 500-
Then 700mV sequentially adds the selective precipitation agent of 400-600g/t, collecting agent Z-200 of 100-180g/t, each dosing
It stirs 2-3 minutes afterwards, inflates roughing 4-7 minutes, obtain Cu-Pb separation rougher concentration and Cu-Pb separation rougher tailings；
(3) oxidant, precipitating reagent and collecting agent Z- will be sequentially added in Cu-Pb separation rougher concentration that step (2) obtains
No. 200 progress triple cleanings, each selected dosing is last half, is stirred 2-3 minutes after dosing, flotation time 3-
5 minutes, selected second of the progress of I concentrate selected, and selected I tailing is returned as roughing to mine, and selected II concentrate carries out for the third time
Selected, selected II tailing is returned as selected I to mine, and selected III concentrate is copper concentrate, and selected III tailing is returned as selected
II is to mine；
(4) step (2) is obtained to the collecting agent Z-200 that 50-90g/t is added in Cu-Pb separation rougher tailings, stirring 2-3 divides
Clock, inflation are scanned 3-5 minutes, and scavenger concentrate is returned as roughing to mine, and scanning tailing is lead concentrate；
Wherein, oxidant is one of potassium permanganate, sodium peroxide or potassium hyperchlorate in the step (2)；
Wherein, selective precipitation agent is sodium phosphate (potassium), sodium pyrophosphate (potassium), sodium tripolyphosphate in the step (2)
One of (potassium), sodium trimetaphosphate (potassium) or calgon (potassium).
The present invention inhibits galena, flotation chalcopyrite, i.e. Copper-lead mixed concentrate using surface oxidation-selective precipitation method
After regrinding reagent removal using active carbon, oxidant is added and improves oxidation of ore pulp reduction potential to 500-700mV, i.e., between galena
Between both chalcopyrites oxidation critical potential, to make galena surface that excessive oxidation occur, oxidation rear surface generates Pb
(OH)2Or PbSO4, chalcopyrite unoxidized surface or slight oxidation；Selective precipitation agent is added to generate in galena oxidized surface
Hydrophily precipitating, increases galena surface hydrophilicity, is suppressed its flotation, and chalcopyrite surface is unaffected, in collecting
Agent acts on the lower hydrophobic floating of chalcopyrite.Oxidant used in this method is one in potassium permanganate, sodium peroxide or potassium hyperchlorate
Kind, selective precipitation agent is the sodium salt or sylvite of phosphorous acid group, i.e. sodium phosphate (potassium), sodium pyrophosphate (potassium), sodium tripolyphosphate
One of (potassium), sodium trimetaphosphate (potassium) or calgon (potassium), precipitating reagent is by the Pb (OH) on galena surface after oxidation2
Or PbSO4It is converted into stable lead phosphate Pb3(PO4)2Precipitating, so that galena surface hydrophilic be made to be suppressed.Oxidant used
It is non-toxic medicament with precipitating reagent, has the advantages that efficient, nontoxic, environmental protection is multiple.
Technical effect obtained by the present invention: the present invention carries out suppression lead using surface oxidation-selective precipitation method and floats copper,
Oxidant used is one of potassium permanganate, sodium peroxide or potassium hyperchlorate, oxidation of ore pulp reduction potential can be adjusted to
Between galena and chalcopyrite oxidation critical potential, thus selective oxidation galena surface；Precipitating reagent used is phosphorous acid group
Sodium salt or sylvite, hydrophilic lead phosphate precipitating can be generated on galena surface, since lead phosphate solubility product is much smaller than chromium
Lead plumbate, so lead phosphate precipitating is stablized than plumbous chromate, therefore precipitating reagent used in the present invention is to the inhibiting effect specific gravity of galena
Chromate is strong, selectivity is better than bichromate.Oxidant-precipitating reagent used in the present invention is non-toxic medicament, and invented technology has
The multiple advantages such as good, the medicament asepsis environment-protecting of Cu-Pb separation effect.
Detailed description of the invention
Fig. 1 is copper-lead floatation separation process flow diagram of the present invention.
Specific embodiment
Technical solution according to the present invention is described in detail below by specific embodiment, the present invention include but
It is not limited to following embodiment.
First embodiment
It is a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method, comprise the following steps that
(1) 300 ~ 500g/t active carbon is added in Copper-lead mixed concentrate to carry out regrinding reagent removal, regrinds time 1-2 minute；
(2) ore pulp will be regrinded in step (1) to pour into flotation cell and add water that ore pulp mass concentration is adjusted to 28%-35%, is stirred
It mixes 1-2 minutes, adds 200-300g/t oxidant, stir 2-3 minutes, oxidation of ore pulp reduction potential is adjusted to 500-
Then 700mV sequentially adds the selective precipitation agent of 400-600g/t, collecting agent Z-200 of 100-180g/t, each dosing
It stirs 2-3 minutes afterwards, inflates roughing 4-7 minutes, obtain Cu-Pb separation rougher concentration and Cu-Pb separation rougher tailings；
(3) oxidant, precipitating reagent and collecting agent Z- will be sequentially added in Cu-Pb separation rougher concentration that step (2) obtains
No. 200 progress triple cleanings, each selected dosing is last half, is stirred 2-3 minutes after dosing, flotation time 3-
5 minutes, selected second of the progress of I concentrate selected, and selected I tailing is returned as roughing to mine, and selected II concentrate carries out for the third time
Selected, selected II tailing is returned as selected I to mine, and selected III concentrate is copper concentrate, and selected III tailing is returned as selected
II is to mine；
(4) step (2) is obtained to the collecting agent Z-200 that 50-90g/t is added in Cu-Pb separation rougher tailings, stirring 2-3 divides
Clock, inflation are scanned 3-5 minutes, and scavenger concentrate is returned as roughing to mine, and scanning tailing is lead concentrate；
Wherein, oxidant is one of potassium permanganate, sodium peroxide or potassium hyperchlorate in the step (2)；
Wherein, selective precipitation agent is sodium phosphate (potassium), sodium pyrophosphate (potassium), sodium tripolyphosphate in the step (2)
One of (potassium), sodium trimetaphosphate (potassium) or calgon (potassium).
One Cu-Pb seperation of Baya ur, NeiMengGu obtains Copper-lead mixed concentrate by mixed float of copper-lead, copper-lead mixing essence
Mine Cu grade 4.6% or so, Pb grade 41% or so regrind progress reagent removal in 2 minutes using 400g/t active carbon, add water that ore pulp is dense
Degree is adjusted to 30%, later using one thick three it is single-minded sweep into row Flotation Separation of Cu-Pb, roughing sequentially adds 240g/t potassium permanganate
(oxidation of ore pulp reduction potential is adjusted to 620mV), 500g/t sodium phosphate and 150g/t collecting agent Z-200, and every section selected and sweep
The dosing of choosing halves on the basis of the preceding paragraph flotation dosage, stirs 3 minutes after each dosing, and roughing scrapes bubble 6 minutes, selected
Bubble is scraped 4 minutes with scanning, and all chats are returned in proper order as the preceding paragraph flotation to mine, and the selected concentrate of third section is final copper essence
Mine, scanning tailing is lead concentrate.Experiment process is as shown in Figure 1, Cu-Pb separation test result is as shown in table 1, and wherein flotation is to mine
For Copper-lead mixed concentrate.
The present invention carries out suppression lead using surface oxidation-selective precipitation method and floats copper it can be seen from 1 result of table, obtains
Cu-Pb separation index is better than potassium bichromate.
Table 1
Second embodiment
This method is based primarily upon surface oxidation-selective precipitation principle and realizes to the efficient, nontoxic floating of Copper-lead mixed concentrate
Choosing separation, this method can comprise the following steps that
Step a, active carbon is added in Copper-lead mixed concentrate to be separated, and carries out regrinding reagent removal.
It, can be to Copper-lead mixed concentrate to be separated in order to promote the high efficiency of FLOTATION SEPARATION in actual floatation process
Regrinding process is carried out, so that the monomer dissociation in Copper-lead mixed concentrate plays one at the same time it can also peel off a part of medicament
Determine the effect of reagent removal.
In the present invention, it in order to preferably promote the effect for regrinding reagent removal, can be added in Copper-lead mixed concentrate appropriate
Active carbon, to adsorb the superfluous medicament in ore pulp, and promote medicament from mineral surfaces solution using the absorption property of active carbon
It inhales.
It preferably, is 300-500g/t regrinding the dosage that active carbon is added when reagent removal processing.Wherein, dosage unit g/t,
Refer to the quality for the floating agent effective component that flotation per ton is used to mine.
Step b, it will pour into flotation cell, copper-lead ore pulp carried out dilute by regrinding the copper-lead ore pulp that reagent removal is handled
It releases, oxidant is added into the copper-lead ore pulp after dilution, apply preset oxidation also for the copper-lead ore pulp of oxidant is added after stirring
Selective precipitation agent and collecting agent is successively added, wait fill in former current potential into the copper-lead ore pulp for be applied with preset oxidation-reduction potential
It is rough select the first scheduled duration after, isolated rougher concentration and rougher tailings, wherein selective precipitation agent be contain phosphate radical
Sodium salt solution and/or potassium salt soln containing phosphate radical.
In the present invention, for the ease of separating copper-lead, it can be diluted processing to ore pulp is regrinded, specifically, will regrinded
After ore pulp pours into flotation cell, water is added into flotation cell, so that the mass concentration of ore pulp is diluted to 28%-35%；In order to just
, can be to adding the ore pulp after water to be stirred in better dilution, specific mixing time can be 1-2 minutes.And then to dilution
The oxidant of 200-300g/t dosage is added in ore pulp afterwards, after stirring 2-3 minutes, applies for the copper-lead ore pulp of oxidant is added
Preset oxidation-reduction potential be 500-700mv then sequentially add selective precipitation agent, the 100-180g/ of 400-600g/t
The collecting agent of t Z-200 all needs stirring 2-3 minute after each adding medicine, later, inflates the first scheduled duration of roughing (generally
4-7 minutes), obtain rougher concentration and rougher tailings, wherein rougher concentration obtains copper concentrate for selected, and rougher tailings is used for
It scans to obtain lead concentrate.
As it can be seen that surface oxidation-selective precipitation method inhibition galena is used in above-mentioned steps b and flotation chalcopyrite,
I.e. after Copper-lead mixed concentrate regrinds reagent removal using active carbon, be added after oxidant by the oxidation-reduction potential of ore pulp improve to
500-700mv adjusts the oxidation-reduction potential of ore pulp to the oxidation of oxidation-reduction potential and chalcopyrite between galena
Between reduction potential, thus, guarantee that excessive oxidation occurs for galena surface, and the surface of galena generates Pb (OH) 2 after oxidation
Or PbSO4, and chalcopyrite unoxidized surface or slight oxidation；Adding selective precipitation agent (can be the sodium containing phosphate radical
Salting liquid and/or potassium salt soln containing phosphate radical) in galena oxidized surface hydrophily lead phosphate precipitating is generated, moreover, by
It is much smaller than plumbous chromate in lead phosphate solubility product, so lead phosphate precipitating is stablized than plumbous chromate, therefore selection of the present invention
Property precipitating reagent it is strong to the bichromate of the inhibiting effect of galena than in the prior art, and selectivity is better than bichromate, thus,
Increase galena surface hydrophilicity, is suppressed its flotation, and chalcopyrite surface is unaffected, the brass under collecting agent effect
The hydrophobic floating of mine.In addition, oxidant-precipitating reagent used in the present invention is non-toxic medicament, invented technology has Cu-Pb separation effect
The multiple advantages such as good, medicament asepsis environment-protecting.
Step c, triple cleaning processing, isolated copper concentrate are carried out to rougher concentration；Wherein, for the first time it is selected after obtain
Selected I concentrate as second it is selected give mine, obtained after selected for the first time selected I tailing return it is selected as first time
To mine, the selected II concentrate obtained after selected for the second time, to mine, obtains selected as selected for the third time after selected for the second time
II tailing returns selected to mine as second, and the selected III concentrate obtained after third time is selected is copper concentrate, and third time is smart
The selected III tailing obtained after choosing is returned as selected for the third time to mine；Selected for the first time oxidant, selective precipitation used
The dosage of agent and collecting agent is the half of dosage used in roughing, subsequent selected twice used oxidant, selective precipitation agent and is caught
The dosage for receiving agent is the half of last selected dosage used.
In fact, selected every time is all the equal of to roughing or last selected reprocessing, moreover, selected used every time
Give mine, be all the obtained concentrate of last flotation, and next time selected obtained tailing, i.e., tailing is to be recycled
's.
Optionally, in the present invention, roughing or selected oxidant used are potassium permanganate sodium peroxide or potassium hyperchlorate
One of or multiple combinations, selective precipitation agent used be sodium phosphate, sodium pyrophosphate, sodium tripolyphosphate, sodium trimetaphosphate,
One of calgon, potassium phosphate, potassium pyrophosphate, potassium tripolyphosphate, three potassium metaphosphates or hexa metaphosphoric acid potassium or a variety of groups
It closes.
Step d, collecting agent is added into rougher tailings, the isolated lead essence after gas overcharging scans the second scheduled duration
Mine, wherein it is lead that the scavenger concentrate obtained after scanning, which is returned as the tailing of scanning to mine, obtained after scanning selected for the first time,
Concentrate.
Specifically, the dosage for the collecting agent Z-200 being added when step d is carried out and scanned processing is 50-90g/t.By 2-3
After minute stirring, after the second scheduled duration (generally 3-5 minutes) is scanned in inflation, obtains scavenger concentrate and scans tailing, wherein
Scavenger concentrate is returned as selected for the first time to mine, and scanning tailing is lead concentrate.
In the present invention, suppression lead is carried out using surface oxidation-selective precipitation method and floats copper, oxidant used is Gao Meng
One of sour potassium, sodium peroxide or potassium hyperchlorate can adjust oxidation of ore pulp reduction potential to galena and chalcopyrite oxidation
Between critical potential, thus selective oxidation galena surface；Precipitating reagent used is the sodium salt or sylvite of phosphorous acid group, in side
Lead ore surface can generate hydrophilic lead phosphate precipitating, since lead phosphate solubility product is much smaller than plumbous chromate, so lead phosphate precipitates
Than plumbous chromate stablize, therefore precipitating reagent used in the present invention to the inhibiting effect of galena stronger than bichromate, selective specific gravity
Chromate is good.And oxidant used and precipitating reagent are non-toxic medicament, have the advantages that efficient, nontoxic, environmental protection is multiple.
Flotation separation method according to the present invention is described in detail below by a specific example.
The example mainly by taking a Cu-Pb seperation of Baya ur, NeiMengGu as an example, carries out copper-lead to the polymetallic ore
Mixed float obtains copper-lead concentrate, and the taste that the taste of Cu is 4.6% or so, Pb in copper-lead concentrate is 41% or so, later, utilizes activity
Charcoal carries out copper-lead concentrate to regrind reagent removal processing, and the dosage of active carbon is 400g/t, and regrinding the reagent removal time is 2 minutes, then, to
Suitable water is added in ore pulp after regrinding reagent removal, the mass concentration of copper-lead ore pulp is adjusted to 30%.It is shown in Figure 1 below
Process flow diagram, mainly include one roughing and triple cleaning technique.
Roughing technique:
Dosage is added into the copper-lead concentrate after dilution and is the potassium permanganate of 240g/t, and applies the redox of 620mv
Voltage adds the sodium phosphate that dosage is 500g/t and collecting agent Z-200 that dosage is 150g/t.Medicament is added every time
It all stirs 3 minutes, in order to be completely dissolved in ore pulp, accelerates reaction.It is isolated thick after inflation roughing scrapes bubble 6 minutes
Concentrate selection and rougher tailings.Wherein, rougher concentration obtains copper concentrate for carrying out subsequent dressing process, rougher tailings be used for into
Row is scanned to obtain lead concentrate.
Dressing process:
I is time selected, the rougher concentration that roughing is obtained as I time it is selected to mine, carry out selected I operation；Specifically
Ground, the potassium permanganate of 120g/t is added into rougher concentration, and applies the redox voltage of 620mv, and adding dosage is
The sodium phosphate and dosage of 250g/t is collecting agent Z-200 of 75g/t.Medicament is added every time all to stir 3 minutes, is inflating
Selected bubble of scraping is after 4 minutes, and isolated selected I concentrate and selected I tailing, shown referring to Fig.1, selected I tailing will return to conduct
Selected I's gives mine, and selected I concentrate will as Section II it is time selected to mine.
Section II time is selected, the potassium permanganate of 60g/t is added into the selected obtained selected I concentrate of I time, and apply
The redox voltage of 620mv adds the sodium phosphate that dosage is 125g/t and the collecting agent Z-200 that dosage is 37.5g/t
Number.Every time be added medicament stir 3 minutes, inflate it is selected scrape bubble 4 minutes after, isolated selected II concentrate and selected II tail
Mine, shown referring to Fig.1, selected II tailing will be returned as selected II to mine, and selected II concentrate is selected as Section III time
Give mine.
Section III time is selected, the potassium permanganate of 30g/t is added into the selected obtained selected II concentrate of Section II time, and apply
The redox voltage of 620mv adds the sodium phosphate that dosage is 62.5g/t and the collecting agent Z- that dosage is 18.75g/t
No. 200.Medicament is added every time to stir 3 minutes, inflate it is selected scrape bubble 4 minutes after, isolated selected III concentrate and selected
III tailing, shown referring to Fig.1, selected III tailing will be returned as selected III to mine, and selected III concentrate is then required
Copper concentrate.
Scan technique:
Collecting agent Z-200 of 70g/t is added into the rougher tailings that roughing obtains, stirs 3 minutes and inflation is scanned and scraped
Bubble scans isolated scavenger concentrate and scans tailing after 4 minutes, wherein scanning tailing is required lead concentrate, and will scan essence
Mine is returned as roughing to mine.
It loops back and forth like this, final FLOTATION SEPARATION obtains required copper concentrate and lead concentrate.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (1)
1. a kind of based on surface oxidation-selective precipitation principle copper-lead flotation separation method, which is characterized in that including walking as follows
It is rapid:
(1) 300 ~ 500g/t active carbon is added in Copper-lead mixed concentrate to carry out regrinding reagent removal, regrinds time 1-2 minute；
(2) ore pulp will be regrinded in step (1) to pour into flotation cell and add water that ore pulp mass concentration is adjusted to 28%-35%, stirs 1-2
Minute, it adds 200-300g/t oxidant, stirs 2-3 minutes, oxidation of ore pulp reduction potential is adjusted to 500-700mV, so
The selective precipitation agent of 400-600g/t, collecting agent Z-200 of 100-180g/t are sequentially added afterwards, stir 2- after each dosing
It 3 minutes, inflates roughing 4-7 minutes, obtains Cu-Pb separation rougher concentration and Cu-Pb separation rougher tailings；
Wherein, the oxidant is one of potassium permanganate, sodium peroxide or potassium hyperchlorate；
Wherein, the selective precipitation agent be sodium phosphate, sodium pyrophosphate, sodium tripolyphosphate, sodium trimetaphosphate, calgon,
One of potassium phosphate, potassium pyrophosphate, potassium tripolyphosphate, three potassium metaphosphates or hexa metaphosphoric acid potassium；
(3) oxidant, precipitating reagent and collecting agent Z-200 will be sequentially added in Cu-Pb separation rougher concentration that step (2) obtains
Triple cleaning is carried out, each selected dosing is last half, is stirred 2-3 minutes after dosing, flotation time 3-5 points
Clock, selected second of the progress of I concentrate selected, and selected I tailing is returned as roughing to mine, and selected II concentrate carries out essence for the third time
Choosing, selected II tailing are returned as selected I to mine, and selected III concentrate is copper concentrate, and selected III tailing, which returns, is used as selected II
To mine；
(4) step (2) is obtained to the collecting agent Z-200 that 50-90g/t is added in Cu-Pb separation rougher tailings, is stirred 2-3 minutes,
Inflation is scanned 3-5 minutes, and scavenger concentrate is returned as roughing to mine, and scanning tailing is lead concentrate.
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