CN106733203A - Beneficiation method for skarn copper ore - Google Patents
Beneficiation method for skarn copper ore Download PDFInfo
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- CN106733203A CN106733203A CN201611101740.XA CN201611101740A CN106733203A CN 106733203 A CN106733203 A CN 106733203A CN 201611101740 A CN201611101740 A CN 201611101740A CN 106733203 A CN106733203 A CN 106733203A
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- copper
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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
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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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
- B03D1/018—Mixtures of inorganic and organic 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a beneficiation method of skarn copper ore, which comprises the following steps of firstly carrying out wet grinding on skarn copper ore, adding a pH regulator during grinding, and regulating the pH value of ore pulp to 9-10; sequentially adding a copper selective collector and a foaming agent into the ore pulp treated in the step (1), and performing copper roughing for 1-3 times and copper scavenging for 1-3 times to obtain first copper rough concentrate and first tailings; sequentially adding a sulfur-containing mineral inhibitor and a copper selective collector into the first copper rough concentrate obtained after the treatment in the step 2, and carrying out concentration for 2-3 times and fine scavenging for 2-3 times to obtain a second copper rough concentrate and a second tailing; and (3) sequentially adding an easy-to-float gangue mineral inhibitor and a strong copper collecting agent into the second copper rough concentrate obtained after the treatment in the step (3), and carrying out concentration for 2-3 times and fine scavenging for 2-3 times to obtain final copper concentrate and third tailings. The method can effectively reduce the dosage of the inhibitor and improve the recovery rate of copper.
Description
Technical field
The present invention relates to mining and metallurgy technology field, more particularly to a kind of beneficiation method of Skarn Cu Deposit.
Background technology
Skarn copper deposit is a kind of typical copper deposit, is influenceed by Ore Genesis, is contained in the skarn copper deposit of part
More mineral containing magnesium silicate (such as talcum, serpentine, chlorite, phlogopite) and containing sulfur minerals (such as pyrite).By
Strong in the hydrophobic nature containing magnesium silicate mineral such as talcum, serpentine, floatability is good, and in floatation process, its trend is often
It is consistent with copper mineral, effectively suppression is such as mustn't go to, Cu Concentrate Grade can be influenceed, and cause copper concentrate content of MgO exceeded.Pyrite
The copper minerals such as floatability and chalcopyrite Deng containing sulfur minerals are close, the sulfur-bearing ore deposit such as preferable pyrite of part floatability in flotation
Thing easily enters final copper concentrate, is also one of principal element of influence Cu Concentrate Grade.
In prior art, when containing sulfur minerals inhibitor and ore of easy floating gangue inhibitor is added simultaneously, due to two
Person influences each other, and can deteriorate flotation pulp environment, weaken inhibition each other, easily brings and causes that ore dressing middling cycle amount is big, copper
The problem of concentrate quality dissatisfaction, must so increase inhibitor consumption, this aspect if the quality of copper concentrate to be ensured
The use cost of inhibitor can be increased, the rate of recovery of copper on the other hand can be also influenceed, Business Economic Benefit is reduced.Therefore it is badly in need of one
Plant the beneficiation method of the Skarn Cu Deposit of high-sulfur containing easy-floating gangue.
The content of the invention
It is an object of the invention to provide a kind of beneficiation method of Skarn Cu Deposit, the method can realized containing magnesium to easily floating
Effective suppression of the containing sulfur minerals such as silicate gangue mineral and pyrite, it is ensured that while copper concentrate quality, effectively reduces and suppresses
Agent consumption, improves copper recovery.
A kind of beneficiation method of Skarn Cu Deposit, methods described includes：
Step 1, skarns native copper ore deposit is carried out wet grinding, and pH regulators are added in ore grinding, adjust slurry pH
To 9-10；
Step 2, selective copper collecting agent and foaming agent sequentially add the ore pulp after the step 1 is processed, carry out copper
Roughing 1-3 times and copper are scanned 1-3 times, obtain first time copper rough concentrate and first time mine tailing；
Step 3, containing sulfur minerals inhibitor and selective copper collecting agent are sequentially added obtained after the step 2 is processed
In copper rough concentrate, and by selected 2-3 times, essence scan 2-3 times after second bronze medal rough concentrate and second mine tailing；
Step 4, ore of easy floating gangue inhibitor and copper strength collecting agent are sequentially added what is obtained after the step 3 is processed
In second bronze medal rough concentrate, and by selected 2-3 times, essence is scanned and final copper concentrate and third time mine tailing is obtained after 2-3 times.
In the step 1, the pH regulators for being added are CaO；Fineness after wet grinding is -0.074mm, is accounted for
60%-75%.
In the step 2, the selective copper collecting agent for being added is the one kind in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate
Or it is various；And the consumption of the selective copper collecting agent and the weight ratio of pending ore pulp are 1-3：100000.
In the step 2, the foaming agent for being added is terpenic oil or methyl isobutyl carbinol；And the use of the foaming agent
It is 0.5-1.5 to measure with the weight ratio of pending ore pulp：100000.
In the step 3, the containing sulfur minerals inhibitor for being added is the one kind in CaO, sodium humate and sodium sulfite
Or it is various；And the consumption of the containing sulfur minerals inhibitor and the weight ratio of pending ore pulp are 1-20：100000.
In the step 3, the selective copper collecting agent for being added is the one kind in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate
Or it is various；And the consumption of the selective copper collecting agent and the weight ratio of pending ore pulp are 0.1-0.3：100000.
In the step 4, the ore of easy floating gangue inhibitor for being added is in carboxymethylcellulose calcium, guar gum and starch
One or more；And the consumption of the ore of easy floating gangue inhibitor and the weight ratio of pending ore pulp are 1-3：100000.
In the step 4, the copper strength collecting agent for being added is butyl xanthate or amyl group xanthate；And the copper strength is caught
The weight ratio of the consumption and pending ore pulp of receiving agent is 0.1-1：100000.
As seen from the above technical solution provided by the invention, the above method can realized containing magnesium silicate to easily floating
Effective suppression of the containing sulfur minerals such as gangue mineral and pyrite, it is ensured that while copper concentrate quality, effectively reduces inhibitor consumption,
Copper recovery is improved, and then increases Business Economic Benefit.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is provided the beneficiation method schematic flow sheet of Skarn Cu Deposit by the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Inventive embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, as shown in Figure 1 for the present invention is implemented
Example provides the beneficiation method schematic flow sheet of Skarn Cu Deposit, and methods described includes：
Step 1, skarns native copper ore deposit is carried out wet grinding, and pH regulators are added in ore grinding, adjust slurry pH
To 9-10；
In the step 1, the pH regulators for being added are CaO；Fineness after wet grinding is -0.074mm, is accounted for
60%-75%.
Step 2, selective copper collecting agent and foaming agent sequentially add the ore pulp after the step 1 is processed, carry out copper
Roughing 1-3 times and copper are scanned 1-3 times, obtain first time copper rough concentrate and first time mine tailing；
In the step 2, the selective copper collecting agent for being added is the one kind in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate
Or it is various；And the consumption of the selective copper collecting agent and the weight ratio of pending ore pulp are 1-3：100000.
The foaming agent for being added is terpenic oil or methyl isobutyl carbinol；And the consumption of the foaming agent and pending ore pulp
Weight ratio be 0.5-1.5：100000.
The step 2 carries out that copper is thick, scans, and is 1-3 times through roughing, scans 1-3 times, obtains first time copper rough concentrate and first
Secondary mine tailing, while most of containing sulfur minerals are removed in first time mine tailing.
Step 3, containing sulfur minerals inhibitor and selective copper collecting agent are sequentially added obtained after the step 2 is processed
In copper rough concentrate, and by selected 2-3 times, essence scan 2-3 times after second bronze medal rough concentrate and second mine tailing；
In the step 3, the containing sulfur minerals inhibitor for being added is the one kind in CaO, sodium humate and sodium sulfite
Or it is various；And the consumption of the containing sulfur minerals inhibitor and the weight ratio of pending ore pulp are 1-20：100000.
The selective copper collecting agent for being added is one or more in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate；And it is described
The consumption of selective copper collecting agent is 0.1-0.3 with the weight ratio of pending ore pulp：100000.
By the selected of step 3, by a small amount of pyrite containing sulfur minerals contained by first time copper rough concentrate and most of gangue
Mineral are removed in second mine tailing.
Step 4, ore of easy floating gangue inhibitor and copper strength collecting agent are sequentially added what is obtained after the step 3 is processed
In second bronze medal rough concentrate, and by selected 2-3 times, essence is scanned and final copper concentrate and third time mine tailing is obtained after 2-3 times.
In the step 4, the ore of easy floating gangue inhibitor for being added is in carboxymethylcellulose calcium, guar gum and starch
One or more；And the consumption of the ore of easy floating gangue inhibitor and the weight ratio of pending ore pulp are 1-3：100000.
The copper strength collecting agent for being added is butyl xanthate or amyl group xanthate；And the consumption of the copper strength collecting agent with treat
The weight ratio for processing ore pulp is 0.1-1：100000.
Second step by step 4 is selected, by contained by second bronze medal rough concentrate ore of easy floating gangue (serpentine, talcum,
Chlorite etc.) remove in third time mine tailing.
Final copper concentrate is obtained by the way that two steps of above-mentioned steps 3 and step 4 are selected, wherein the selected main suppression of a step is yellow
The containing sulfur minerals such as iron ore, the selected main suppression ore of easy floating gangue of second step.
Technological process with specific example to above-mentioned beneficiation method below is described in detail：
Embodiment 1, Anhui somewhere copper mine containing easy-floating gangue, raw ore cupric 0.64%, sulphur 5.1%.Process mineralogy is studied
Show, copper-bearing mineral is mainly chalcopyrite in the ore, containing sulfur minerals are mainly pyrite, and gangue mineral is mainly quartz, length
Stone, separately containing more ore of easy floating gangue, such as serpentine, talcum, chlorite, its mineral composition accounts for 8%, is a kind of allusion quotation
The high sulfur copper ore containing easy-floating gangue of type.
Raw ore is carried out into wet grinding first, mog accounts for 68% for -0.074mm, pH regulators are added in ore grinding
CaO, adjustment slurry pH is 9~10.
It is selective copper collecting agent to use thiourethane, and terpinol is foaming agent, through one roughing, is scanned for three times, obtains copper thick
Concentrate 1 and mine tailing 1.Wherein roughing collector dosage is 42g/t, and frother dosages are 28g/.Scan collecting agent and foaming agent is used
Amount is followed successively by the 1/3 of last operation.
Line asynchronous is entered to gained copper rough concentrate 1 selected：The sulfur-bearing such as pyrite contained by the selected main removing copper rough concentrate 1 of one step
Mineral and most of gangue mineral, inhibitor used is CaO.Through triple cleaning, (wherein single-minded CaO consumptions are 600g/t, sulphur ammonia
Ester consumption is 5g/t；The essence of essence two three is that blank is selected), essence scans that (essence sweeps a CaO consumptions for 100g/t, and essence sweeps two CaO use twice
It is 50g/t to measure), obtain rough concentrate 2 and mine tailing 2.
Easy-floating gangue contained by the selected main removing copper rough concentrate 2 of two steps, inhibitor used is carboxymethylcellulose calcium.Through three
It is secondary that selected (single-minded smart two smart three carboxymethylcellulose calciums consumption is respectively 50g/t, 10g/t, 5g/t, in addition, single-minded be additionally added collecting
The stronger collecting agent butyl xanthate 20g/t of ability), twice essence scan, obtain copper concentrate and mine tailing 3.
It is final to obtain copper grade 26.53%, the copper concentrate of copper recovery 85.34% through laboratory closed-circuit test.
Embodiment 2, the mineral composition of Hubei xi-ka-yan iron ore are complicated, Gold in Ores belong to mineral have pyrite, chalcopyrite,
Covellite, alpha chalcocite, tennantite, magnetic iron ore, molybdenite, magnetic iron ore, galena, zincblende etc.；Gangue mineral have quartz,
Feldspar (potassium feldspar and plagioclase), mica (muscovite, biotite, phlogopite), actinolite, the tremolite, pigeonite, seed of pomegranate
Stone (grossularite, andradite), chlorite, talcum, serpentine, pyrophillite, kaolinite, siderite, calcite, apatite,
Rutile, aspidelite, olivine, peganite, zircon etc..Wherein recyclable metallic element is mainly copper, and copper grade is 0.95%,
Ore sulfur content is also higher simultaneously, and sulfur grade is 12.1%.Further, since easy-floating gangue species is more in ore, especially talcum,
Kaolinite, pyrophillite, chlorite etc. (mineral relative amount accounts for 4.67%) are all easy to influence copper concentrate quality, to the efficient of copper
Picking belt carrys out larger difficulty.
Raw ore is carried out into wet grinding first, mog accounts for 65% for -0.074mm, pH regulators are added in ore grinding
CaO, adjustment slurry pH is 9~10.It is selective copper collecting agent, pine tar with one to one mixture of sulphur nitrogen ester to use thiourethane
Alcohol is foaming agent, and through three roughings, once purging selection obtains copper rough concentrate 1 and mine tailing 1.Wherein the collector dosage of roughing one is 35g/
T, frother dosages are 21g/, roughing two, roughing three and scan collecting agent and frother dosages are followed successively by the 1/ of last operation
3。
Enter line asynchronous to gained copper rough concentrate 1 selected (step is selected and two steps are selected)：
Containing sulfur minerals and most of gangue mineral such as pyrite, selected contained by the selected main removing copper rough concentrate 1 of one step
Containing sulfur minerals inhibitor is CaO and sodium humate, and selective copper collecting agent is consistent with coarse scan choosing.It is (wherein single-minded through triple cleaning
CaO consumptions are 800g/t, and sodium humate consumption is 60g/t, and thiourethane is 5g/t with the amount of mixture of sulphur nitrogen ester one to；Essence two
Essence three is that blank is selected), essence scans that (essence sweeps a CaO consumptions for 80g/t, and sodium humate consumption is 20g/t twice；Essence sweeps two CaO
Consumption is 40g/t, and sodium humate consumption is 10g/t), obtain copper rough concentrate 2 and mine tailing 2.
Easy-floating gangue contained by the selected main removing copper rough concentrate 2 of two steps, inhibitor used is guar gum.Through triple cleaning
Essence is scanned twice, obtains copper concentrate and mine tailing 3.Wherein single-minded smart two smart three guar gums consumption is respectively 120g/t, 20g/t, 10g/
T, while single-minded addition copper strength collecting agent butyl xanthate 10g/t, reduces loss of the copper mineral in mine tailing 3.
It is final to obtain grade 24.73%, the copper concentrate of copper recovery 86.45% through laboratory closed-circuit test.
In sum, the method for the embodiment of the present invention using selective collector of copper sulfides, return by the selectivity for realizing copper mineral
Receive, by asynchronous selected (step is selected and two steps are selected), using conventional inexpensive inhibitor, in the condition of relatively low inhibitor consumption
Under, can effectively remove the containing sulfur minerals and ore of easy floating gangue for influenceing final copper concentrate quality, obtain qualified copper concentrate, obtain compared with
Good economic benefit；The embodiment of the present invention is easy to field management also with simple to operate simultaneously, to ore properties strong adaptability,
Ore dressing process efficiently, stabilization the advantages of.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (8)
1. a kind of beneficiation method of Skarn Cu Deposit, it is characterised in that methods described includes：
Step 1, skarns native copper ore deposit is carried out wet grinding, and pH regulators, adjustment slurry pH to 9- are added in ore grinding
10；
Step 2, selective copper collecting agent and foaming agent sequentially add the ore pulp after the step 1 is processed, carry out copper roughing
1-3 times and copper are scanned 1-3 times, obtain first time copper rough concentrate and first time mine tailing；
Step 3, containing sulfur minerals inhibitor and selective copper collecting agent are sequentially added the first time obtained after the step 2 is processed
In copper rough concentrate, and by selected 2-3 times, essence scan 2-3 times after second bronze medal rough concentrate and second mine tailing；
Step 4, ore of easy floating gangue inhibitor and copper strength collecting agent are sequentially added second obtained after the step 3 is processed
In secondary copper rough concentrate, and by selected 2-3 times, essence is scanned and final copper concentrate and third time mine tailing is obtained after 2-3 times.
2. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 1,
The pH regulators for being added are CaO；Fineness after wet grinding is -0.074mm, accounts for 60%-75%.
3. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 2,
The selective copper collecting agent for being added is one or more in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate；And the copper choosing
The consumption of selecting property collecting agent is 1-3 with the weight ratio of pending ore pulp：100000.
4. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 2,
The foaming agent for being added is terpenic oil or methyl isobutyl carbinol；And the weight of the consumption of the foaming agent and pending ore pulp
Amount is than being 0.5-1.5：100000.
5. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 3,
The containing sulfur minerals inhibitor for being added is one or more in CaO, sodium humate and sodium sulfite；And the sulfur-bearing ore deposit
The consumption of thing inhibitor is 1-20 with the weight ratio of pending ore pulp：100000.
6. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 3,
The selective copper collecting agent for being added is one or more in ethyl ammonia sulfate, sulphur nitrogen ester and diethyldithiocarbamate；And the copper choosing
The consumption of selecting property collecting agent is 0.1-0.3 with the weight ratio of pending ore pulp：100000.
7. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 4,
The ore of easy floating gangue inhibitor for being added is one or more in carboxymethylcellulose calcium, guar gum and starch；And institute
The weight ratio of the consumption and pending ore pulp of stating ore of easy floating gangue inhibitor is 1-3：100000.
8. the beneficiation method of Skarn Cu Deposit according to claim 1, it is characterised in that in the step 4,
The copper strength collecting agent for being added is butyl xanthate or amyl group xanthate；And the consumption of the copper strength collecting agent with it is pending
The weight ratio of ore pulp is 0.1-1：100000.
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Cited By (5)
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|---|---|---|---|---|
| CN107626435A (en) * | 2017-09-19 | 2018-01-26 | 武钢资源集团有限公司 | The recovery process of the low-grade silver of skarn type copper-containing magnetite association and cobalt |
| CN108160335A (en) * | 2017-12-04 | 2018-06-15 | 长春黄金研究院 | A kind of low-grade Skarn Cu molybdenum ore gangue inhibitor of high argillization |
| CN110841796A (en) * | 2019-11-25 | 2020-02-28 | 昆明冶金研究院有限公司 | Process for recovering chalcopyrite and chalcocite with non-uniform embedded particle size from high-yellow-iron mineralized skarnite copper ore |
| CN112317138A (en) * | 2020-11-16 | 2021-02-05 | 云南思茅山水铜业有限公司 | Copper-zinc separation method for high-sulfur copper-zinc ore |
| CN113522530A (en) * | 2020-04-14 | 2021-10-22 | 青海省地质矿产测试应用中心 | Environment-friendly beneficiation inhibitor and preparation method and application thereof |
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| CN110841796A (en) * | 2019-11-25 | 2020-02-28 | 昆明冶金研究院有限公司 | Process for recovering chalcopyrite and chalcocite with non-uniform embedded particle size from high-yellow-iron mineralized skarnite copper ore |
| CN110841796B (en) * | 2019-11-25 | 2021-08-31 | 昆明冶金研究院有限公司 | Process for recovering chalcopyrite and chalcocite from high-yellow-iron mineralized skatolite copper ore |
| CN113522530A (en) * | 2020-04-14 | 2021-10-22 | 青海省地质矿产测试应用中心 | Environment-friendly beneficiation inhibitor and preparation method and application thereof |
| CN112317138A (en) * | 2020-11-16 | 2021-02-05 | 云南思茅山水铜业有限公司 | Copper-zinc separation method for high-sulfur copper-zinc ore |
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Application publication date: 20170531 |