CN108435432B - A kind of combined flotation agent and its application for the carbon containing Pyrite-type gold ore flotation of high arsenic - Google Patents

A kind of combined flotation agent and its application for the carbon containing Pyrite-type gold ore flotation of high arsenic Download PDF

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CN108435432B
CN108435432B CN201810289110.2A CN201810289110A CN108435432B CN 108435432 B CN108435432 B CN 108435432B CN 201810289110 A CN201810289110 A CN 201810289110A CN 108435432 B CN108435432 B CN 108435432B
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agent
flotation
combined
functional group
application
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CN108435432A (en
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王毓华
卢东方
郑霞裕
姚兰星
赵悦豪
郑海涛
褚浩然
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Central South University
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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
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur
    • 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
    • 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
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • 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
    • 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
    • B03D2201/04—Frothers
    • 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
    • B03D2203/025—Precious metal ores

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The present invention provides a kind of combined flotation agent for the carbon containing Pyrite-type gold ore flotation of high arsenic.The combined flotation agent is by having [CSx]2‑The floating agent of functional group and have R-OCSS‑The floating agent of functional group is composed according to weight ratio 1:1-1:5 proportion, and wherein the value range of x is 3-5, and R is the alkyl with 4-6 carbon atom.The present invention also provides the applications of the combined flotation agent, and under equivalent pharmaceutical dose dosage, combined flotation agent of the invention can effectively improve the grade and the rate of recovery of the carbon containing Pyrite-type gold mine of high arsenic, greatly utilize mineral resources, improve income.

Description

A kind of combined flotation agent and its application for the carbon containing Pyrite-type gold ore flotation of high arsenic
Technical field
The invention belongs to mineral floating field more particularly to a kind of combinations for the carbon containing Pyrite-type gold ore flotation of high arsenic Flotation agent and its application.
Background technique
Gold gets more and more people's extensive concerning as a kind of most rare, most precious one of metal, it is not only economically There is critical role with industrial, while being also the special currency for laying in and investing.The existing gold ore place of production 2000 in China Many places, gold deposit geology resource have the characteristics that few big mine, small scale, grade be low, resource dispersion.To the end of the year 2002, China's independence Gold mine reserves is about 3000t, and wherein difficult separation ore resources reserves account for about 1000t or so.Arsenic content is 0.1% or more Ore is the important component of typical difficult-treating gold mine and China's gold ore resource, in the southwest, northwest and northeast in China Area is distributed.
The golden resource in China is largely to exist in the form of Independent Mineral and microinclusion, with opening for gold resource Hair, the golden resource being present in pyrite in the form of Independent Mineral is fewer and fewer, and in the form of microinclusion existing for mineral deposit As main gold resource., the collecting identical as the floating principle in sulphide ore mineral deposit by the mineral deposit of gold-carrying minerals of pyrite The kind of agent is more, important is xanthate and its lipid, thio-alcohol, black powder class and sulphur gland class collecting agent, and gold-carrying minerals arsenic yellow The recycling relative difficulty of iron ore.Studies have shown that carry mock gold in floatation process and be easier to adsorb S element than mispickel, Surface-active is higher, thus has the higher rate of recovery；And with the increase of arsenic and golden percentage composition in mispickel, The rate of recovery reduces.And not only mispickel activity is lower in the high carbon containing Pyrite-type gold mine of arsenic, influences grade and the rate of recovery, wherein Carbonaceous to gold have suction-operated and the ore grinding stage be easy argillization, flotation is adversely affected.
At present for the carbon containing Pyrite-type gold mine of high arsenic common collecting agent have ethyl xanthate, butyl xanthate, cresols black powder, Butyl ammonium aerofloat and oleic acid etc., new collector such as Y89 series collecting agent use six that MIBC, CS2 and NaOH are raw material production Carbon alcohol xanthate, since it is with special molecular structural formula and longer carbochain, so that it is strong with excellent selectivity and relatively Collecting ability, be the common collecting agent of gold ore.In addition, it was verified that combination medicament is used in floatation process, because of medicament Between synergistic effect, can further improve the performance of floating agent, this is also the effective way for improving difficult ore dressing floatation indicators.Mesh Before, in gold flotation production, the most common combined capturing and collecting agent is that amyl group xanthate is combined with butyl ammonium aerofloat, but the combination medicament is to arteries and veins There is flotation selectivity difference in the gold mine of the easy argillization of stone ore object.Therefore, what the present invention was studied is used to effectively recycle high arsenic The combined flotation agent of carbon containing Pyrite-type gold mine is of great significance to actual industrial.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one Kind is used for the combined flotation agent of the carbon containing Pyrite-type gold ore flotation of high arsenic, which can successfully realize gangue mineral and carry Effective FLOTATION SEPARATION of gold mineral under the conditions of gold grade is higher in guaranteeing concentrate, improves the rate of recovery of gold；The present invention is also The application of the combined flotation agent is accordingly provided.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of combined flotation agent for the carbon containing Pyrite-type gold ore flotation of high arsenic, the combined flotation agent is by having [CSx]2-The floating agent of functional group and have R-OCSS-The floating agent of functional group is matched according to weight ratio 1:1-1:5 and is combined It forms, wherein the value range of x is 3-5, and R is the alkyl with 4-6 carbon atom.
In the carbon containing Pyrite-type gold mine of high arsenic of the invention, arsenic content is greater than 3%, carbon content 1%-2%.
Combinations of the above flotation agent, it is preferred that described that there is [CSx]2-The floating agent of functional group is more thiocarbonates. It should be pointed out that this has [CSx]2-The floating agent of functional group need to be prepared at normal temperatures and pressures, by adding flotation drug Enter in water and stir that 5min is produced above, floating agent obtained is the red solution of transparence.
Combinations of the above flotation agent, it is preferred that described that there is R-OCSS-The floating agent of functional group is ethyl xanthate, different One of butyl xanthate, isoamyl xanthate are a variety of.
The inventive concept total as one, the present invention also provides a kind of combinations of the above flotation agent to contain carbopyrite in high arsenic Application in type gold ore flotation, the application process adjust ore pulp the following steps are included: adding pH regulator first in ore pulp Then pH value adds copper sulphate for activation gold-carrying minerals (including carry mock gold and carry golden mispickel), then to add combination floating Agent is selected, foaming agent is finally added, flotation operation is carried out later, obtains flotation concentrate.
Above-mentioned application, it is preferred that the mass fraction of the ore pulp is 17%-25%, and the pH value for adjusting the ore pulp is 8-10。
Above-mentioned application, it is preferred that based on ore pulp per ton, the dosage of the pH regulator is 750-1250g/t, the sulphur The dosage of sour copper is 25-75g/t, and the dosage of the combined capturing and collecting agent is 250-400g/t, and the dosage of the foaming agent is 60- 84g/t。
Above-mentioned application, it is preferred that the pH regulator is sodium carbonate.
Above-mentioned application, it is preferred that be additionally added waterglass in application process as gangue sludge inhibitor and dispersing agent, press Ore pulp meter per ton, the dosage of the waterglass are 750-1250g/t.
Above-mentioned application, it is preferred that the foaming agent be alcohol, carboxylic acid and rouge mixture, concrete model RB1, RB2, One of RB3 or a variety of.The foam in ore pulp can be increased by adding foaming agent, keep foam more stable, with collecting agent phase Interaction, so that concentrate be driven to float.
Above-mentioned application, it is preferred that the flotation operation includes roughing twice, and the activity duration of first time roughing is 3- Flotation collector 62.5-100g/t need to be added in 5min, second of roughing again, and foaming agent 24-36g/t, second of roughing is added Activity duration be 3-5min.
Compared with the prior art, the advantages of the present invention are as follows:
In the present invention, use has R-OCSS-The floating agent of functional group can form double xanthate in mineral surfaces, rise To preferable collecting effect, and its source is wide, cheap, type is more, flotation effect is good；What is used has [CSx]2-Functional group Floating agent, have reproducibility, than containing R-OCSS-The floating agent of functional group has lower oxidation-reduction potential, more Production mercaptan easy to oxidize, is adsorbed on mineral surfaces, keeps its hydrophobic, and it is inorganic medicament, compared to existing organic flotation Agent toxicity is smaller, and production technology is simpler.Combined flotation agent of the invention will be by that will have [CSx]2-The floating agent of functional group With with R-OCSS-The floating agent of functional group carries out proportion combination by specified weight ratio, and reasonable technique for applying of arranging in pairs or groups makes to have There is R-OCSS-The floating agent of functional group first generates lyophobic dust and is adsorbed on mineral surfaces, to contain R-OCSS-Functional group Floating agent increases continuous absorption particle, keeps its adsorption density bigger, mineral surfaces hydrophobicity is higher, the group prepared Closing flotation agent has stronger collecting ability and higher selectivity；Under equivalent pharmaceutical dose dosage, combined flotation agent of the invention The grade and the rate of recovery of the carbon containing Pyrite-type gold mine of high arsenic can be effectively improved, mineral resources are greatly utilized, improves and receives Benefit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention Some embodiments for those of ordinary skill in the art without creative efforts, can also basis These attached drawings obtain other attached drawings.
Fig. 1 is that the combined flotation agent of the embodiment of the present invention 1 is applied to the technique stream of the carbon containing Pyrite-type gold ore flotation of high arsenic Cheng Tu.
Specific embodiment
To facilitate the understanding of the present invention, invention herein is done below in conjunction with Figure of description and preferred embodiment more complete Face meticulously describes, but protection scope of the present invention is not limited to following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and it is of the invention to be not intended to limitation Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city Field is commercially available or can be prepared by existing method.
Choose the carbon containing Pyrite-type gold mine of high arsenic in In A Certain Place of Xinjiang area, mine Au containing 2.36g/t, 0.46%As, 1.95% C, 2.78%CaO, 14.67%MgO, 53.68%SiO2, 16.33%Al2O3, 8.04%Fe2O3, 1.58%K2O。
Embodiment 1:
There to be [CSx]2-The floating agent (trithiocarbonic acid sodium, x=3) of functional group and have R-OCSS-Functional group Floating agent (isoamyl xanthate, R=5) is matched by weight 1:4, combined flotation agent of the invention is made.
The flotation of the carbon containing Pyrite-type gold mine of the high arsenic that the combined flotation agent of the present embodiment is used for above-mentioned In A Certain Place of Xinjiang area Operation, process flow chart are as shown in Figure 1, comprising the following steps:
(1) grind grading, grinding particle size control account for 80% or more in the particle of -0.074mm；Ore pulp, mine are modulated after ore grinding The mass fraction of slurry is 27%.
(2) based on ore pulp per ton, 750g/t sodium carbonate is added into ore pulp to adjust the pH value and dispersibility of ore pulp, incited somebody to action Slurry pH control is 8, stirs 3min；750g/t waterglass medicament is added, into ore pulp to disperse ore pulp and inhibit gangue mine Mud stirs 3min；Then into ore pulp, 50g/t copper sulphate is added after stirring 3min again with activating load mock gold and mispickel 250g/t combined flotation agent of the invention is attached, continues to stir 3min, finally adds 84g/t foaming agent RB-3, carry out first The activity duration of secondary roughing, control first time roughing is 3min, obtains rough concentrate and tailing.The tailing of first time roughing is entered 62.5g/t combined flotation agent of the invention is added in the process, adds 36g/t foaming agent RB- after stirring 3min for second of roughing 3, continue to stir 2min, the activity duration of second of roughing of control is 3min, and the concentrate after gained concentrate and first time roughing is mixed It is combined into final concentrate product.
Embodiment 2:
There to be [CSx]2-The floating agent (sodium tetrathiocarbonate, x=4) of functional group and have R-OCSS-Functional group Floating agent (Isobutylxanthic acid, R=4) is matched by weight 1:2, and combined flotation agent of the invention is made.
The flotation of the carbon containing Pyrite-type gold mine of the high arsenic that the combined flotation agent of the present embodiment is used for above-mentioned In A Certain Place of Xinjiang area Operation, comprising the following steps:
(1) grind grading, grinding particle size control account for 80% or more in the particle of -0.074mm；Ore pulp, mine are modulated after ore grinding The mass fraction of slurry is 27%.
(2) based on ore pulp per ton, 1000g/t sodium carbonate is added into ore pulp to adjust the pH value and dispersibility of ore pulp, It is 9 by slurry pH control, stirs 3min；1000g/t waterglass medicament is added, into ore pulp to disperse ore pulp and inhibit gangue Sludge stirs 3min；Then into ore pulp, 25g/t copper sulphate to activate carries mock gold and mispickel, stirs after 3min again Addition addition 300g/t combined flotation agent of the invention, continues to stir 3min, finally adds 60g/t foaming agent RB-3, carries out the The activity duration of one roughing, control first time roughing is 4min, obtains rough concentrate and tailing.By the tailing of first time roughing into Enter second of roughing, 75g/t combined flotation agent of the invention is added in the process, adds 24g/t foaming agent RB- after stirring 3min 3, continue to stir 2min, the activity duration of second of roughing of control is 4min, and the concentrate after gained concentrate and first time roughing is mixed It is combined into final concentrate product.
Embodiment 3:
There to be [CSx]2-The floating agent (sodium pentathiosulfate, x=5) of functional group and have R-OCSS-Functional group Floating agent (ethyl xanthate, R=2) is matched by weight 1:1, and combined flotation agent of the invention is made.
The flotation of the carbon containing Pyrite-type gold mine of the high arsenic that the combined flotation agent of the present embodiment is used for above-mentioned In A Certain Place of Xinjiang area Operation, comprising the following steps:
(1) grind grading, grinding particle size control account for 80% or more in the particle of -0.074mm；Ore pulp, mine are modulated after ore grinding The mass fraction of slurry is 27%.
(2) based on ore pulp per ton, 1250g/t sodium carbonate is added into ore pulp to adjust the pH value and dispersibility of ore pulp, It is 10 by slurry pH control, stirs 3min；1250g/t waterglass medicament is added, into ore pulp to disperse ore pulp and inhibit arteries and veins Stone ore mud stirs 3min；Then into ore pulp, 75g/t copper sulphate is to activate load mock gold and mispickel, after stirring 3min Addition 400g/t combined flotation agent of the invention is added again, is continued to stir 3min, is finally added 84g/t foaming agent RB-3, carries out The activity duration of first time roughing, control first time roughing is 5min, obtains rough concentrate and tailing.By the tailing of first time roughing Into second of roughing, 100g/t combined flotation agent of the invention is added in the process, adds 36g/t foaming agent after stirring 3min RB-3 continues to stir 2min, and the activity duration of second of roughing of control is 5min, the concentrate after gained concentrate and first time roughing It is mixed into final concentrate product.
Comparative example 1:
The target mineral, separating step of FLOTATION SEPARATION and parameter are same as Example 1 in this comparative example, and difference is only that: Flotation agent is xanthate Y89 in this comparative example, and flotation agent dosage is 200g/t, flotation agent when second of roughing when first time roughing Dosage is 50g/t.
Comparative example 2:
The target mineral, separating step of FLOTATION SEPARATION and parameter are same as Example 1 in this comparative example, and difference is only that: Flotation agent is the combined flotation agent of amyl group xanthate and butyl ammonium aerofloat in this comparative example, and flotation agent dosage is when first time roughing 200g/t, flotation agent dosage is 50g/t when second of roughing.
The FLOTATION SEPARATION of the high carbon containing Pyrite-type gold mine of arsenic the results are shown in Table 1 in above-described embodiment 1-3 and comparative example 1-2.
The low-grade high carbon containing auriferous pyrite FLOTATION SEPARATION index of arsenic of table 1
As shown in Table 1, after using combination medicament FLOTATION SEPARATION of the invention, concentrate gold grade reaches 16.01- 17.71g/t, gold recovery reach 84.99%-86.31%, improve 13.65-15.58g/t compared with raw ore gold grade, comprehensive floating Index is selected to be substantially better than under identical process the combination using the xanthate Y89 of equivalent pharmaceutical dose dosage or amyl group xanthate and butyl ammonium aerofloat Flotation agent.

Claims (10)

1. a kind of combined flotation agent for the carbon containing Pyrite-type gold ore flotation of high arsenic, which is characterized in that the combined flotation agent By having [CSx]2-The floating agent of functional group and have R-OCSS-The floating agent of functional group is matched according to weight ratio 1:1-1:5 Than being composed, wherein the value range of x is 3-5, and R is the alkyl with 4-6 carbon atom；The high arsenic contains carbopyrite In type gold mine, arsenic content is greater than 3%, carbon content 1%-2%.
2. combined flotation agent according to claim 1, which is characterized in that described that there is [CSx]2-The floating agent of functional group For more thiocarbonates.
3. combined flotation agent according to claim 1, which is characterized in that described that there is R-OCSS-The floating agent of functional group For one of ethyl xanthate, Isobutylxanthic acid, isoamyl xanthate or a variety of.
4. a kind of combined flotation agent as claimed in any one of claims 1-3 is in the carbon containing Pyrite-type gold ore flotation of high arsenic Using, which is characterized in that the application process adjusts pH values of pulp the following steps are included: adding pH regulator first in ore pulp Then value adds copper sulphate for activation gold-carrying minerals, then adds combined flotation agent, finally add foaming agent, carries out flotation work later Industry obtains flotation concentrate.
5. application according to claim 4, which is characterized in that the mass fraction of the ore pulp is 17%-25%, described in adjusting The pH value of ore pulp is 8-10.
6. application according to claim 5, which is characterized in that based on ore pulp per ton, the dosage of the pH regulator is 750-1250g/t, the dosage of the copper sulphate are 25-75 g/t, and the dosage of the combined flotation agent is 250-400g/t, described The dosage of foaming agent is 60-84 g/t.
7. according to application described in claim 4,5 or 6, which is characterized in that the pH regulator is sodium carbonate.
8. according to application described in claim 4,5 or 6, which is characterized in that waterglass is additionally added in application process, by mine per ton Slurry meter, the dosage of the waterglass are 750-1250g/t.
9. according to application described in claim 4,5 or 6, which is characterized in that the foaming agent is the mixing of alcohol, carboxylic acid and rouge Object, one of concrete model RB1, RB2, RB3 or a variety of.
10. according to application described in claim 4,5 or 6, which is characterized in that the flotation operation include roughing twice, first The activity duration of secondary roughing is 3-5min, and combined flotation agent 62.5-100g/t need to be added in second of roughing again, and foaming agent is added 24-36g/t, the activity duration of second of roughing are 3-5min.
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CN114042536B (en) * 2021-11-10 2022-07-22 中国地质科学院矿产综合利用研究所 Sulfide ore flotation combined reagent and method
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