CN106362868A - Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores - Google Patents
Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores Download PDFInfo
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- CN106362868A CN106362868A CN201610999812.0A CN201610999812A CN106362868A CN 106362868 A CN106362868 A CN 106362868A CN 201610999812 A CN201610999812 A CN 201610999812A CN 106362868 A CN106362868 A CN 106362868A
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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
- 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
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular 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
- 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
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Abstract
The invention relates to a mineral processing technology capable of reducing the content of magnesium oxide in flotation concentrates of sulphide copper ores, and belongs to the technical field of mineral processing. The method comprises the following four steps: ore grinding, flotation, regrinding and concentration. Compared with the prior art, the mineral processing technology has the characteristics that sodium humate is used as an inhibitor of dolomite, the use amount of the sodium humate is small, but the inhibition effect is high; and a chemicals adding mode of regrinding copper rough concentrates and then adding the sodium humate in concentration is adopted, selectivity of the inhibition effect can be improved, and influence to recycling of copper minerals is small. The flotation agent used in the mineral processing technology is non-toxic or has low toxicity, is environmentally friendly, and is easy to popularize and use.
Description
Technical field
The invention belongs to technical field of beneficiation, it is related to a kind of choosing reducing content of magnesia in copper sulfide ore flotation concentrate
Miner's skill, the ore-dressing technique of dolomitic gangue in more particularly, to a kind of sorting copper sulfide concentrate.
Background technology
Dolomite as a kind of high mineral of content of magnesia, in copper sulfide mineral floatation process, when raw ore content is high
When not exclusively entering copper concentrate with sorting, can cause that in copper concentrate, content of magnesia is high, lead to smelting process produce problem and
Difficult.
In sorting copper sulfide ore, dolomite mainly adopts thus reducing content of magnesia in flotation concentrate both at home and abroad at present
The method adding the inhibitor such as waterglass, carboxymethyl cellulose, sodium hexameta phosphate, humic acidss, but after adopting these methods this,
Content of magnesia is still higher, and result is undesirable, and these inhibitor materials have stronger inhibitory action to copper mineral, lead to
It is larger that the response rate of copper reduces amplitude.The deficiencies in the prior art therefore how are overcome to be current technical field of beneficiation urgent need to resolve
Problem.
Content of the invention
The invention aims to solution the deficiencies in the prior art, provide a kind of reduction in copper sulfide ore flotation concentrate
The ore-dressing technique of content of magnesia, this technique can effectively reduce content of magnesia in copper sulfide ore flotation concentrate, and is adopted
Inhibitor has good selectivity, copper mineral is reclaimed impact little it is easy to popularization and application.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprises the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 500 ~ 1500 g ton, mog be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained carries out copper sulfide flotation, the sodium sulfide adding in floatation process
Total amount is 100 ~ 200 g ton, butyl xanthate total amount is 50 ~ 150 g ton and 2# oil total amount is 50 ~ 150 g ton, obtains copper coarse-fine
Ore deposit；
Step (3), the copper rough concentrate that step (2) is obtained is regrinded, and mog is -48 μm 90% ~ 95%, is regrinded
Copper rough concentrate；
Step (4), carries out selected to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate in refining process, obtains sulfur
Change copper concentrate；The addition of sodium humate is 200 ~ 400 g ton.
It is further preferred that secondary the roughly selecting and once purging selection, twice of including carrying out successively of the flotation described in step (2)
Roughly select the regrinding process carrying out step (3) after the copper rough concentrate obtaining merges, copper scavenger concentrate returns to be roughly selected for the first time.
It is further preferred that 2# oil secondary roughly select with the quality added in once purging selection account for total consumption be followed successively by 80%,
13-15%、5-7%；
Sodium sulfide accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Butyl xanthate accounts for total consumption and is followed successively by 60%-65%, 20%-30%, 10%- with the quality added in once purging selection in secondary roughly selecting
15%.；
But in actual application, ratio not limited to this.
It is further preferred that selected described in step (4) is for secondary or triple cleaning.
It is further preferred that the first time selected cleaner tailings obtaining returns to and roughly selects for the first time；Selected for the second time
To cleaner tailings return to for the first time selected；The selected for the third time cleaner tailings obtaining returns to selected for the second time.
It is further preferred that the described ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, bag
Include following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 500 ~ 1500 g ton, mog be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained adds sodium sulfide 60 g ton, butyl xanthate 50 g ton and 2# oil
60 g ton carry out primary vulcanization copper and roughly select, and obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 30 g ton, butyl xanthate 20 g ton and 2# oil 10 g ton are added to carry out second copper sulfide in the thick mine tailing of copper
Roughly select, obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 10 g ton, butyl xanthate 10 g ton and 2# oil 5 g ton are added to carry out copper sulfide and scan in the thick mine tailing of copper,
Obtain copper scavenger concentrate and mine tailing, copper scavenger concentrate returns to be roughly selected for the first time；
Step (3), the copper rough concentrate that obtain step (2) and copper rough concentrate are regrinded after merging, and mog is -48 μ
M 95%, obtains copper rough concentrate of regrinding；
Step (4), carries out secondary or triple cleaning in the copper rough concentrate of regrinding that step (3) is obtained, and adds rotten in refining process
Sodium phytate, obtains copper sulfide concentrate；The addition of sodium humate is 200-400 g ton.
The principle of the present invention:
Humic acidss are a kind of natural polymer polyeletrolytes, have colloidal compound property, can under the conditions of different ph values with
Many kinds of metal ions forms chelate, including fe2+、fe3+、cu2+、ca2+Plasma, thus can be adsorbed on containing relevant metal ions
Inhibitory action is produced on the mineral of composition.Copper coarse concentrate regrinding with promote copper mineral abundant dissociation and selected middle add rotten
Sodium phytate contributes to the selectivity of its inhibitory action, thus reaching the purpose not only suppressing dolomite but also not affecting copper mineral recovery.
Compared with prior art, its advantage is the present invention:
(1) as the inhibitor of dolomite, consumption is 200-400 g ton to present invention sodium humate, and consumption is few, inhibitory action
By force；
(2) present invention adopts copper coarse concentrate regrinding after the selected middle dosing method adding sodium humate, is favorably improved its suppression
The selectivity making, Cu Concentrate Grade improves 3%-6%, and copper concentrate content of magnesia reduces 3%-5%, and copper recovery only reduces
0.2%-0.9%, good separation effect, reclaims impact to copper mineral little；
(3) floating agent that ore-dressing technique of the present invention is adopted is nontoxic or low toxicity, environmental friendliness.
Brief description
Accompanying drawing is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining
The present invention, does not constitute inappropriate limitation of the present invention.
Fig. 1 is the schematic flow sheet that the present invention reduces the ore-dressing technique of content of magnesia in copper sulfide ore flotation concentrate.
Specific embodiment
With reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and should not be regarded as limiting this
Bright scope.Unreceipted particular technique or condition person in embodiment, according to the technology described by document in the art or condition
Or carry out according to product description.Material therefor or the unreceipted production firm person of instrument, are and can pass through what purchase obtain
Conventional products.
The present invention unless otherwise stated, percentage sign representation quality percent.
The present invention only has concrete restriction to the addition total amount of sodium humate, for selected middle addition every time amount no special will
Ask, but different addition manner can have certain impact to mineral processing index, can be adjusted according to actual needs.
Embodiment 1
As shown in figure 1, a kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprise the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 1000 g ton, mog be -74 μm 80%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained adds sodium sulfide 60 g ton, butyl xanthate 50 g ton and 2# oil
60 g ton carry out primary vulcanization copper and roughly select, and obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 30 g ton, butyl xanthate 20 g ton and 2# oil 10 g ton are added to carry out second copper sulfide in the thick mine tailing of copper
Roughly select, obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 10 g ton, butyl xanthate 10 g ton and 2# oil 5 g ton are added to carry out copper sulfide and scan in the thick mine tailing of copper,
Obtain copper scavenger concentrate and mine tailing, copper scavenger concentrate returns to be roughly selected for the first time；
Step (3), the copper rough concentrate that obtain step (2) and copper rough concentrate merge to be regrinded, and mog is -48 μm
95%, obtain copper rough concentrate of regrinding；
Step (4), carries out selected to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate in refining process, obtains sulfur
Change copper concentrate；The addition of sodium humate: selected addition 300 g ton for the first time；The selected for the first time cleaner tailings obtaining returns
Roughly select to first time；The second selected cleaner tailings obtaining returns to selected for the first time.
Embodiment 2
As shown in figure 1, a kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprise the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 1000 g ton, mog be -74 μm 80%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained adds sodium sulfide 60 g ton, butyl xanthate 50 g ton and 2# oil
60 g ton carry out primary vulcanization copper and roughly select, and obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 30 g ton, butyl xanthate 20 g ton and 2# oil 10 g ton are added to carry out second copper sulfide in the thick mine tailing of copper
Roughly select, obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 10 g ton, butyl xanthate 10 g ton and 2# oil 5 g ton are added to carry out copper sulfide and scan in the thick mine tailing of copper,
Obtain copper scavenger concentrate and mine tailing, copper scavenger concentrate returns to be roughly selected for the first time；
Step (3), the thick mine tailing of copper that obtain step (2) and copper rough concentrate are regrinded after merging, and mog is -48 μ
M 95%, obtains copper rough concentrate of regrinding；
Step (4), carries out selected to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate in refining process, obtains sulfur
Change copper concentrate；The addition of sodium humate is respectively: for the first time selected addition 300 g ton, second selected add 100 grams/
Ton；The selected for the first time cleaner tailings obtaining returns to be roughly selected for the first time；The second selected cleaner tailings obtaining returns to the
Primary cleaning；The selected for the third time cleaner tailings obtaining returns to selected for the second time.
Embodiment 3
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprises the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 500 g ton, mog be -74 μm 75%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained carries out copper sulfide flotation, the sodium sulfide adding in floatation process
Total amount is 100 g ton, butyl xanthate total amount is 50 g ton and 2# oil total amount is 50 g ton, obtains copper rough concentrate；
Described flotation include carrying out successively secondary roughly select and once purging selection, roughly select twice the copper rough concentrate obtaining merge laggard
The regrinding process of row step (3), copper scavenger concentrate returns to be roughly selected for the first time；
2# oil accounts for total consumption and is followed successively by 80%, 14%, 6% with the quality added in once purging selection in secondary roughly selecting；
Sodium sulfide accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Butyl xanthate accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Step (3), the copper rough concentrate that step (2) is obtained is regrinded, and mog is -48 μm 90%, and the copper that obtains regrinding is thick
Concentrate；
Step (4), carries out triple cleaning to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate, obtain in refining process
Obtain copper sulfide concentrate；The addition of sodium humate is 200 g ton, all adds in first time essence.
The selected for the first time cleaner tailings obtaining returns to be roughly selected for the first time；Second selected cleaner tailings obtaining returns
Selected to first time；The selected for the third time cleaner tailings obtaining returns to selected for the second time.
Embodiment 4
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprises the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 1500 g ton, mog be -74 μm 85%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained carries out copper sulfide flotation, the sodium sulfide adding in floatation process
Total amount is 200 g ton, butyl xanthate total amount is 150 g ton and 2# oil total amount is 150 g ton, obtains copper rough concentrate；
Described flotation include carrying out successively secondary roughly select and once purging selection, roughly select twice the copper rough concentrate obtaining merge laggard
The regrinding process of row step (3), copper scavenger concentrate returns to be roughly selected for the first time；
2# oil accounts for total consumption and is followed successively by 80%, 10%, 10% with the quality added in once purging selection in secondary roughly selecting；
Sodium sulfide accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Butyl xanthate accounts for total consumption and is followed successively by 65%, 20%, 15% with the quality added in once purging selection in secondary roughly selecting；
Step (3), the copper rough concentrate that step (2) is obtained is regrinded, and mog is -48 μm 90% ~ 95%, is regrinded
Copper rough concentrate；
Step (4), carries out triple cleaning to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate, obtain in refining process
Obtain copper sulfide concentrate；The addition of sodium humate is 400 g ton, for the first time selected addition 200 g ton, second selected addition
100 g ton, selected addition 100 g ton for the third time.
The selected for the first time cleaner tailings obtaining returns to be roughly selected for the first time；The second selected cleaner tailings obtaining returns to the
Primary cleaning；The selected for the third time cleaner tailings obtaining returns to selected for the second time.
Embodiment 5
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprises the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 1000 g ton, mog be -74 μm 80%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained carries out copper sulfide flotation, the sodium sulfide adding in floatation process
Total amount is 150 g ton, butyl xanthate total amount is 100 g ton and 2# oil total amount is 100 g ton, obtains copper rough concentrate；
Described flotation include carrying out successively secondary roughly select and once purging selection, roughly select twice the copper rough concentrate obtaining merge laggard
The regrinding process of row step (3), copper scavenger concentrate returns to be roughly selected for the first time；
2# oil accounts for total consumption and is followed successively by 80%, 15%, 5% with the quality added in once purging selection in secondary roughly selecting；
Sodium sulfide accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Butyl xanthate accounts for total consumption and is followed successively by 65%, 25%, 10% with the quality added in once purging selection in secondary roughly selecting；
Step (3), the copper rough concentrate that step (2) is obtained is regrinded, and mog is -48 μm 90% ~ 95%, is regrinded
Copper rough concentrate；
Step (4), carries out recleaning to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate, obtain in refining process
Obtain copper sulfide concentrate；The addition of sodium humate is 350 g ton, for the first time selected addition 250 g ton, second selected addition
100 g ton；
The selected for the first time cleaner tailings obtaining returns to be roughly selected for the first time；The second selected cleaner tailings obtaining returns to the
Primary cleaning.
Application example:
Certain copper sulfide ore, raw ore copper grade 0.434%, content of magnesia 16.06%.Copper sulfide mineral is mainly bornite, Huang
Copper mine, gangue mineral is mainly dolomite, quartz, Anhydrite, copper occurrence status: bornite 73.66%, Chalkopyrite 17.41%, brightness copper
Ore deposit 2.90%, covellite 2.96%, malachite 3.07%, magnesium oxide occurrence status: dolomite 97.83%, other 2.17%.
Technological process: roughly select twice after raw ore ore grinding, once purging selection, recleaning after copper coarse concentrate regrinding.
Technological condition: raw ore mog -200 mesh 80%, Calx 1000 g ton (enters mill, ph9.0)；Roughly select addition
Sodium sulfide 90 g ton (roughly select 60 g ton, roughly select 30 g ton), butyl xanthate 70 g ton (are roughly selected 50 g ton, roughly select 20
G ton), 2# oil 70 g ton (roughly select 50 g ton, roughly select 20 g ton)；Scan addition sodium sulfide 10 g ton, butyl xanthate 10
G ton, 2# oil 5 g ton；Copper coarse concentrate regrinding fineness -300 mesh 95%；Selected i adds sodium humate 300 g ton.
Comparative example 1
Comparative example 1 flotation is identical with application example to ore deposit.
Technological process: copper rough concentrate is not regrinded, and remaining is identical with application example.
Technological condition: selected be added without sodium humate, remaining is identical with application example.
Comparative example 2
Comparative example 2 flotation is identical with application example to ore deposit.
Technological process: copper rough concentrate is not regrinded, and remaining is identical with application example.
Technological condition: identical with application example.
The result of the test of embodiment 1-2, application example and comparative example is shown in Table 1.
Table 1 embodiment 1-2, application example and comparative example 1-2 mineral processing index (%)
Contrast from the mineral processing index of application example and comparative example 1, copper recovery is reduced to 90.29% by 90.53%, only reduces
0.25%；Cu Concentrate Grade brings up to 28.78% by 22.80%, improves 5.98%；Concentrate content of magnesia is reduced to by 8.38%
4.53%, reduce by 3.85%；, as the inhibitor of dolomite, consumption 300 g ton, consumption is few for described ore-dressing technique sodium humate,
Inhibitory action is strong, to reducing concentrate content of magnesia effect substantially, copper mineral is reclaimed and copper recovery impact is little.
Contrast from the mineral processing index of comparative example 2 and comparative example 1, copper recovery is reduced to 89.66% by 90.53%, reduce
0.87%, copper recovery reduction is more, therefore it is necessary that copper rough concentrate is implemented to regrind, and described ore-dressing technique adopts copper rough concentrate
Regrind after the selected middle dosing method adding sodium humate, be favorably improved the selectivity of its inhibitory action.
Contrast from the mineral processing index of embodiment 2 and comparative example 1, Cu Concentrate Grade brings up to 35.61% by 22.80%, carries
High by 12.81%；Concentrate content of magnesia is reduced to 2.88% by 8.38%, reduces by 5.50%；Therefore selected interpolation sodium humate to raising
Separating effect, reduction concentrate content of magnesia, raising concentrate copper grade effect are obvious.
Embodiment 1 takes into account the response rate and concentrate grade, and concentration times and sodium humate consumption are moderate；Embodiment 2 stresses essence
Ore deposit grade, concentration times are many, and sodium humate consumption is high.
Contrast from the mineral processing index of embodiment 2 and comparative example 1, copper recovery is reduced to 88.70% by 90.53%, reduce
1.83%, copper recovery reduction is many, therefore should control suitable concentration times and suitable sodium humate consumption, it is to avoid impact copper mine
The recovery of thing.
The floating agent that described ore-dressing technique adopts is widely used conventional dose, nontoxic or low toxicity, environmental friendliness.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate is it is characterised in that include following walking
Rapid:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 500 ~ 1500 g ton, mog be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained carries out copper sulfide flotation, the sodium sulfide adding in floatation process
Total amount is 100 ~ 200 g ton, butyl xanthate total amount is 50 ~ 150 g ton and 2# oil total amount is 50 ~ 150 g ton, obtains copper coarse-fine
Ore deposit；
Step (3), the copper rough concentrate that step (2) is obtained is regrinded, and mog is -48 μm 90% ~ 95%, is regrinded
Copper rough concentrate；
Step (4), carries out selected to the copper rough concentrate of regrinding that step (3) obtains, and adds sodium humate in refining process, obtains sulfur
Change copper concentrate；The addition of sodium humate is 200 ~ 400 g ton.
2. the ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate according to claim 1, its feature
Be, the flotation described in step (2) include carrying out successively secondary roughly select and once purging selection, roughly select the copper rough concentrate obtaining twice
Carry out the regrinding process of step (3), copper scavenger concentrate returns to be roughly selected for the first time after merging.
3. the ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate according to claim 2, its feature
It is, 2# oil accounts for total consumption and is followed successively by 80%, 10%-15%, 5%-10% with the quality added in once purging selection in secondary roughly selecting；
Sodium sulfide accounts for total consumption and is followed successively by 60%, 30%, 10% with the quality added in once purging selection in secondary roughly selecting；
Butyl xanthate accounts for total consumption and is followed successively by 60%-65%, 20%-30%, 10%- with the quality added in once purging selection in secondary roughly selecting
15%.
4. the ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate according to claim 1, its feature
It is, selected described in step (4) is for secondary or triple cleaning.
5. the ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate according to claim 4, its feature
It is, the selected for the first time cleaner tailings obtaining returns to be roughly selected for the first time；Second selected cleaner tailings obtaining returns to
Selected for the first time；The selected for the third time cleaner tailings obtaining returns to selected for the second time.
6. the ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate according to claim 1, its feature
It is, comprise the following steps:
Step (1), copper sulfide raw ore is carried out ore grinding using ore mill, during ore grinding, is simultaneously introduced Calx, Calx in ore mill
Addition be 500 ~ 1500 g ton, mog be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained adds sodium sulfide 60 g ton, butyl xanthate 50 g ton and 2# oil
60 g ton carry out primary vulcanization copper and roughly select, and obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 30 g ton, butyl xanthate 20 g ton and 2# oil 10 g ton are added to carry out second copper sulfide in the thick mine tailing of copper
Roughly select, obtain copper rough concentrate and the thick mine tailing of copper；
Sodium sulfide 10 g ton, butyl xanthate 10 g ton and 2# oil 5 g ton are added to carry out copper sulfide and scan in the thick mine tailing of copper,
Obtain copper scavenger concentrate and mine tailing, copper scavenger concentrate returns to be roughly selected for the first time；
Step (3), the copper rough concentrate that obtain step (2) and copper rough concentrate are regrinded after merging, and mog is -48 μ
M 95%, obtains copper rough concentrate of regrinding；
Step (4), carries out secondary or triple cleaning in the copper rough concentrate of regrinding that step (3) is obtained, and adds rotten in refining process
Sodium phytate, obtains copper sulfide concentrate；The addition of sodium humate is 200-400 g ton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999812.0A CN106362868B (en) | 2016-11-14 | 2016-11-14 | A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110026294A (en) * | 2019-05-30 | 2019-07-19 | 阳谷祥光铜业有限公司 | A kind of mineral floating method and mineral floating system |
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| CN110813546A (en) * | 2019-11-28 | 2020-02-21 | 昆明理工大学 | Flotation method of high-calcium-magnesium type oxidized and vulcanized mixed copper ore |
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