CN109865600A - A method of lead preferentially being floated in lead-zinc sulfide ore flotation using hybrid collector - Google Patents
A method of lead preferentially being floated in lead-zinc sulfide ore flotation using hybrid collector Download PDFInfo
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- CN109865600A CN109865600A CN201910318482.8A CN201910318482A CN109865600A CN 109865600 A CN109865600 A CN 109865600A CN 201910318482 A CN201910318482 A CN 201910318482A CN 109865600 A CN109865600 A CN 109865600A
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Abstract
A method of lead preferentially being floated in lead-zinc sulfide ore flotation using hybrid collector, include the following steps: ore fine grinding first, then regulator, inhibitor and hybrid collector is successively added to size mixing, wherein hybrid collector is that diethyldithiocarbamate, butyl xanthate and benzyl hydroximic acid are used in mixed way as collecting agent, the hybrid collector is configured to collecting agent mixture according to a certain percentage to use, or used respectively in floatation process, finally carry out the flotation of lead.Contain part weathering lead oxide ore present invention efficiently solves raw ore in lead-zinc sulfide ore floatation process and be difficult to the problem of effectively recycling by sulfide mineral collector, the rate of recovery of lead in lead concentrate can be effectively improved.
Description
Technical field
The present invention relates to technical field of beneficiation.It is specifically a kind of preferential in lead-zinc sulfide ore flotation using hybrid collector
The method of floating lead.
Background technique
China's Pb-Zn deposits resource is compared with horn of plenty, but ore type is complicated, and Associated Constituents are more altogether, comprehensive utilization value compared with
Greatly；Lead-zinc deposit is also no lack of large-scale lead-zinc bed mostly based on sulphide ore, and lead zinc ratio is single based on zinc
Lead deposit it is less, totally show that lean ore is more, the few regularity of distribution of rich ore.Though in lead-zinc sulfide ore bed based on sulphide ore,
But due to geology is at mine and surface weathering etc., often there is the mixing mineral ore of sulphide ore Yu oxide ore symbiosis, is selected to lead zinc
Difficulty Hui Shou not brought.
For the Pb-Zn deposits dressing method in China mainly based on flotation, the difference of the disseminated grain size of ore, altogether Associated Constituents is straight
Connect the Beneficiation flowsheet and regime of agent for influencing floatation process, but sorting for most of ores follows one and universal sort principle stream
Journey " preferentially floats lead, then selects zinc ", this is primarily due in lead-zinc sulfide ore universal zinc proportion and is higher than lead, and vulcanizes
The floatability of lead ore (generally based on galena) is higher than zinc sulfide ore, generally based on zincblende, marmatite, passes through letter
Single regime of agent preferentially floats lead, so that it may obtain leaded higher lead concentrate, then recycle zinc and other associations from float lead tailings
Element.Scientific research personnel the various aspects such as the collecting agent of lead-zinc sulfide ore flotation, inhibitor, foaming agent and process flow achieve compared with
More research achievements.
Open source literature in terms of the collecting agent of lead-zinc sulfide ore flotation has: China Patent Publication No. CN107138285A is public
A kind of vulcanized lead, zinc ore floating combined capturing and collecting agent and its application method, China Patent Publication No. CN107252735A has been opened to disclose
A kind of sulfide flotation composite collector and its preparation method and application, China Patent Publication No. CN104475267A is disclosed
A kind of galena collecting agent and preparation method thereof, the open source literature in terms of the inhibitor of lead-zinc sulfide ore flotation has: China is specially
Sharp publication number CN103817013A discloses lead-zinc ore floating inhibitor combination and lead-zinc ore floating method, and Chinese patent is public
The number of opening CN101138749 discloses a kind of inhibitor used in plumbum floatation, in terms of the foaming agent of lead-zinc sulfide ore flotation
Open source literature have: China Patent Publication No. CN106944247A discloses a kind of flotation collector and frother and preparation method thereof,
Open source literature in terms of the process flow of lead-zinc sulfide ore flotation has: China Patent Publication No. CN104084313A discloses one
The beneficiation method of kind low-grade vulcanized lead zinc ore, it is new that China Patent Publication No. CN101417266 discloses lead zinc sulfide minerals flotation
Technique.It is worth noting that there are two have larger impact to flotation sorting result in the ore properties difference of lead-zinc sulfide ore
Factor, one be carbonaceous in raw ore content, the other is the content of oxide ore or weathered ore.Solve the two influence because
The key of element is the selection and use of collecting agent, for example, China Patent Publication No. CN101138750 disclose it is carbon containing higher
Lead zinc sulphur ore plumbum floatation technique, using the method for addition butyl xanthate during selecting lead, to prevent from sinking caused by carbonaceous height
Slot phenomenon improves lead yield, and China Patent Publication No. CN105797868A is disclosed recycles low product from lead-zinc ore floating tailing
The beneficiation method of position zinc oxide ore proposes sulphide ore desliming or handles the method for oxidation weathered ore individually to recycle lead zinc；China
Patent publication No. CN105797868A discloses the beneficiation method that low-grade zinc oxide ore is recycled from lead-zinc ore floating tailing, or
Person develops novel collecting agent or discloses a kind of choosing using combined capturing and collecting agent, such as China Patent Publication No. CN104907181A
The collecting agent and preparation method thereof of other lead ore, such as to disclose a kind of vulcanization-oxidization mixed by China Patent Publication No. CN1704170
Lead-zinc ore floating method is closed, the yield of weathered ore is aoxidized in Lai Qianghua sulphide ore.But these methods mostly use under high alkali environment,
It needs to cooperate the quick lime of high dosage, tends to the problems such as encountering pipeline lime knot calcium in process of production.
Therefore, the present invention contains carbonaceous, oxide ore, the higher problem of weathered ore ratio for lead-zinc sulfide ore, proposes one
Kind is suitable for the hybrid collector used under low alkali environment, is remarkably improved the recovery index of lead.
Summary of the invention
The method that the object of the present invention is to provide a kind of preferentially to float lead using hybrid collector in lead-zinc sulfide ore flotation,
The sorting index that higher lead is obtained in carbonaceous, the oxidation biggish situation of weathered ore accounting can be realized under low alkali environment, together
When do not influence the recycling of zinc.Sorting process compared with prior art, can individually be handled without de- charcoal, desliming or to oxide ore,
The sulphide ore and oxide ore that lead is directly recycled by flotation avoid the loss of lead in oxidation weathered ore, to improve the recycling of lead
Rate.
The present invention reaches above-mentioned purpose by the following technical programs: a kind of to use hybrid collector in lead-zinc sulfide ore flotation
In preferentially float lead method, be made of following steps:
It (1) is -0.074mm+0.010mm by ore fine grinding to grade,
(2) regulator, inhibitor and hybrid collector is added to size mixing,
(3) flotation is then carried out, froth pulp is lead rough concentrate or the lead concentrate after repeatedly selected, and product is tail in slot
Mine,
The hybrid collector is according to diethyldithiocarbamate: butyl xanthate=5:1~1:1 prepare after with benzyl hydroximic acid 20~100
G ton mixing example is formulated, total amount at 100~300 g tons, regulator dosage be 500~1500 g tons of sodium carbonate with
200~2000 g tons of lime, adjusting pH is 10, and inhibitor is 200~2000 g tons of zinc sulfate and sodium sulfite 100~500
G ton.
The hybrid collector is the difference formed according to raw ore, is used in mixed way butyl xanthate, diethyldithiocarbamate and benzene first hydroxyl oxime
Acid is as collecting agent, and benzyl hydroximic acid is the main collecting agent of lead oxide ore in hybrid collector, and diethyldithiocarbamate is with butyl xanthate
The collecting agent of galena, directly uses in floatation process, or adds diethyldithiocarbamate, butyl Huang respectively in floatation process
Medicine and benzyl hydroximic acid.
The dosage of benzyl hydroximic acid is 20-100 g tons in the hybrid collector.
Selected lead-zinc sulfide ore ore pulp is the ore pulp after raw ore ore grinding, is not necessarily to desliming, decarbonisation, in suitable dosing
Point, sequentially adds regulator, inhibitor and collecting agent, and control flotation pH is to guarantee benzyl hydroximic acid to lead oxide ore 8~10
The key of higher collecting effect, wherein benzyl hydroximic acid can be with butyl xanthate, diethyldithiocarbamate simultaneously in floating lead roughing addition, can also be
Addition when floating lead is scanned.
Of the invention has the prominent advantages that:
Benzyl hydroximic acid has been used in collecting agent, compared with benzyl hydroximic acid is not added, can have been returned not influencing zinc flotation
Under the premise of receipts, the rate of recovery of lead in lead rough concentrate is made to improve 2~8%, effect is influenced by the ratio of lead oxide ore in raw ore,
Vulcanized lead and lead oxide bulk flotation are realized, desliming (removing oxidation weathered ore) bring lead loss and individually place are avoided
The reason oxidation increased cost of weathered ore.
Butyl xanthate and diethyldithiocarbamate have been used in collecting agent, are had to the high lead-zinc sulfide ore containing carbonaceous and are preferably sorted effect
Fruit can lose to avoid lead zinc caused by de- charcoal, while the low alkali environment that flotation pH is 8~10 can reduce the dosage of lime.
Present invention process is simple, is convenient for industrial process operation, can effectively reduce reagent cost, and improve the rate of recovery of lead,
The recycling of zinc is not influenced, to improve the utilization rate of led-zinc-silver deposit.
Detailed description of the invention
Fig. 1 is the beneficiation method of the present invention for preferentially floating lead using hybrid collector in lead-zinc sulfide ore flotation
Floating lead roughing experiment process figure.
Fig. 2 is the beneficiation method of the present invention for preferentially floating lead using hybrid collector in lead-zinc sulfide ore flotation
Closed-circuit test flow chart.
Specific embodiment
Technical solution of the present invention is described further below with reference to embodiment, is not intended to limit the present invention.
Embodiment 1
Ore sample is Inner Mongol lead-zinc sulfide ore primary sample, wherein oxidation weathered ore ratio is up to 30%, ore grinding to-
After 0.074mm grade accounts for 85%, former lead roughing uses quick lime for 6000 g tons, 400 g tons of inhibitor zinc sulfate, vulcanized sodium
400 g tons, collecting agent uses 100 g tons of butyl ammonium aerofloat dosage, and hybrid collector is used to replace former collecting agent as diethyldithiocarbamate 50
G ton, 50 g tons of butyl xanthate and 50 g tons of benzyl hydroximic acid, and reducing quick lime dosage is 3000 g tons, other conditions
Identical, carrying out flotation experimental results comparison respectively see the table below:
The result shows that not only increasing rough concentrate lead grade using hybrid collector, while improving the recycling of rough concentrate tungsten
Rate 5% or so.
Embodiment 2
Ore sample is Yunnan lead-zinc sulfide ore primary sample, carbon containing 1% or so, oxide ore accounting example about 15%, original is floating
Selecting process is that one roughing scans preferentially floating lead selected twice three times, and roughing uses 2500 g tons of lime, 800 grams of zinc sulfate/
Ton, 45 g tons of 25# black powder, 50 g tons of butyl xanthate, does not change original regime of agent and technique by 800 g tons of sodium sulfite
Under the premise of process, the benzyl hydroximic acid that 80 g tons of raw ores are added in section is scanned in floating lead, carries out closed circuit flotation experimental results comparison
It see the table below:
The result shows that using the hybrid collector that benzyl hydroximic acid is added, the rate of recovery of lead concentrate lead is significantly improved about
7%.
Embodiment 3
Ore sample is Inner Mongol vulcanization lead-zinc-copper deposit primary sample, wherein carbon containing 1.18%, former process uses de- charcoal technique,
First using 200 g tons of zinc sulfate, 200 g tons of sodium sulfite and 30 g tons of flotation carbons of diethyldithiocarbamate, then using 6500 grams of lime/
Ton, 1200 g tons of zinc sulfate, 1200 g tons of sodium sulfite, 200 g tons of the diethyldithiocarbamate floating lead from de- charcoal tailing, catch original
It receives agent and replaces with and be used in mixed way 120 g tons of diethyldithiocarbamate, 80 g tons of butyl xanthate and 20 g tons of benzyl hydroximic acid, remove decarburization
Lead is directly preferentially floated in operation, and other conditions are identical, and carrying out flotation experimental results comparison see the table below:
The result shows that former regime of agent and decarburization operation will lose the lead of about 4% rate of recovery in the carbonaceous of removing, use
Hybrid collector removes decarburization operation, improves lead concentrate lead recovery about 7% or so.
Embodiment 4
Ore sample is the low-grade lead-zinc polymetallic sulfide ore raw ore weathering sample in Xinjiang, and weathered ore accounts for about 35%, original stream
Cheng Caiyong one roughing triple cleaning is scanned twice, and roughing uses 100 g tons of 50 g tons of butyl ammonium aerofloat and diethyldithiocarbamate as mixing
Collecting agent is closed, 6000 g tons of lime consumption, 200 g tons of zinc sulfate, 200 g tons of sodium sulfite, 250 g tons of vulcanized sodium are smart
Collecting agent is not added in choosing, and inhibitor dosage halves step by step, scans without inhibitor, and collector dosage halves step by step.Former process is caught
It receives agent and replaces with and be used in mixed way 80 g tons of diethyldithiocarbamate, 15 g tons of butyl xanthate and 60 g tons of benzyl hydroximic acid, other conditions phase
Together, carrying out flotation experimental results comparison see the table below:
The result shows that improving the grade and the rate of recovery about 8% of lead concentrate simultaneously using hybrid collector, lead is sorted
Significant effect.
Claims (4)
1. a kind of method for preferentially floating lead in lead-zinc sulfide ore flotation using hybrid collector, which is characterized in that by walking as follows
Rapid composition:
It (1) is -0.074mm+0.010mm by ore fine grinding to grade,
(2) regulator, inhibitor and hybrid collector is added to size mixing,
(3) flotation is then carried out, froth pulp is lead rough concentrate or the lead concentrate after repeatedly selected, and product is tailing in slot,
The hybrid collector is according to diethyldithiocarbamate: butyl xanthate=5:1~1:1 prepare after with 20~100 g tons of benzyl hydroximic acid
Mixing example is formulated, and for total amount at 100~300 g tons, regulator dosage is 500~1500 g tons of sodium carbonate and lime
200~2000 g tons, adjusting pH is 10, inhibitor be 100~500 grams of 200~2000 g tons of zinc sulfate and sodium sulfite/
Ton.
2. the method according to claim 1 for preferentially floating lead in lead-zinc sulfide ore flotation using hybrid collector, special
Sign is that the hybrid collector is the difference formed according to raw ore, is used in mixed way butyl xanthate, diethyldithiocarbamate and benzyl hydroximic acid
As collecting agent, benzyl hydroximic acid is the main collecting agent of lead oxide ore in hybrid collector, and diethyldithiocarbamate and butyl xanthate are sulphur
The collecting agent for changing lead ore, directly uses, or add diethyldithiocarbamate, butyl xanthate respectively in floatation process in floatation process
And benzyl hydroximic acid.
3. the method according to claim 1 for preferentially floating lead in lead-zinc sulfide ore flotation using hybrid collector, special
Sign is that the dosage of benzyl hydroximic acid is 20-100 g tons in the hybrid collector.
4. the method according to claim 1 for preferentially floating lead in lead-zinc sulfide ore flotation using hybrid collector, special
Sign is, being selected in lead-zinc sulfide ore ore pulp is the ore pulp after raw ore ore grinding, is not necessarily to desliming, decarbonisation, in suitable chemical feeding points,
Regulator, inhibitor and collecting agent are sequentially added, control flotation pH is to guarantee that benzyl hydroximic acid is higher to lead oxide ore 8~10
The key of collecting effect, wherein benzyl hydroximic acid can be added in floating lead roughing simultaneously with butyl xanthate, diethyldithiocarbamate, can also be in floating lead
Addition when scanning.
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| CN201811584526 | 2018-12-24 |
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Cited By (2)
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| CN111266195A (en) * | 2020-03-05 | 2020-06-12 | 中南大学 | Zinc oxide ore flotation combined collecting agent and application thereof |
| CN113333170A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Method for improving main grade of zinc concentrate after copper-zinc separation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113333170A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Method for improving main grade of zinc concentrate after copper-zinc separation |
| CN113333170B (en) * | 2021-05-13 | 2022-05-03 | 西北矿冶研究院 | Method for improving main grade of zinc concentrate after copper-zinc separation |
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