CN106238197B - Copper concentrate produces the roasting-beneficiation method of " copper matte regulus " - Google Patents
Copper concentrate produces the roasting-beneficiation method of " copper matte regulus " Download PDFInfo
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- CN106238197B CN106238197B CN201610659343.8A CN201610659343A CN106238197B CN 106238197 B CN106238197 B CN 106238197B CN 201610659343 A CN201610659343 A CN 201610659343A CN 106238197 B CN106238197 B CN 106238197B
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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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/001—Preliminary treatment with modification of the copper constituent
- C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
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- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to mineral dressing and smelt metal fields, more particularly to the beneficiation method of " artificial mine " after the phase transformation and phase transformation of chalcopyrite, pyrite.The copper concentrate makes various copper-sulphide ores be converted into Cu in the transition roasting process for controlling temperature, oxygen amount2S, unoxidized iron are converted to FeS, and most of iron is oxidized to magnetic Fe3O4.Then pass through flotation magnetic separation, obtain the high-grade copper concentrate of similar " copper matte regulus ", high grade iron concentrate.It challenges to modern pyrogenic process Copper making technique with the method for transition roasting ore dressing.
Description
Technical field
The present invention relates to ore dressing-technical field of smelting, more particularly to " artificial after the phase transformation and phase transformation of chalcopyrite, pyrite
The beneficiation method of mine ".
Background technology
1, the smelting process of copper concentrate production copper matte regulus
Copper concentrate is the staple commodities on international market, and smeltery handles Cu Concentrate Grade in 18%-30%, concentrate
In 60%-85%, it is chalcopyrite, pyrite mineral for the sum of copper, iron, element sulphur.Modern Copper making main process is as follows：(1)
Copper matte regulus and smelting slag are produced in copper concentrate reduction melting, and matte send blowing, smelting slag to send to be elected mine；(2) copper matte regulus oxidation blowing production
Go out blister copper and blowing slag, blister copper send refining, blowing slag to send to be elected mine；(3) smelting slag, blowing slag flotation, obtain concentrate and tailings, essence
Mine Returning smelting, tailing are abandoned.Reduction melting (making sulphur melting) is the most important smelting process of copper smelting by pyrometallurgy, it is in 1150-
Under 1250 DEG C of high temperature, copper sulfide concentrate and flux is made to carry out melting in smelting furnace, the copper, sulphur in furnace charge and unoxidized iron shape
At liquid copper matte regulus, the SiO in furnace charge2、AL2O3, CaO, FeO form liquid slag together.Clinker is immiscible with copper matte regulus, and close
Spend it is different, to detach.Copper matte regulus is FeS-CuS2Eutectic, clinker is with 2FeOSiO2(or 2CaOSiO2) based on
Oxide melt.
The ingredient and smelting condition of copper matte regulus are stable, and depending on slag composition is with copper concentrate impurity content, for containing
The high concentrate of iron uses high iron slag type, and high silicon (or high calcium) slag type is used for siliceous high concentrate.Due to slag molten temp
Higher than copper matte regulus, so making the temperature of sulphur melting, slag former ingredient and dosage, all determine that thus fusion process is according to slag type
Slagging process.
There are many kinds of modern copper weld pool technologies, and selection and the scale of founding the factory, the concentrate ingredient of copper smelting by pyrometallurgy factory melting technique have
It closes.If scale is big, raw material is stablized generally using Flash Smelting Furnace melting.Medium scale smeltery is suitable for using Mitsubishi process, Ao Si
Mai Tefa, Noranda process, 100,000 tons of blister copper of annual output is below to mostly use watt torsion Ke Fufa, kaldo process, silver method etc..
Copper weld pool output：Copper matte regulus is FeS-CuS2Eutectic, cupric 55-70%, containing Cu, Fe, S in 95-98%.Clinker
It is 2FeOSiO2Oxide melt, since method of smelting difference slag composition fluctuates larger, generally clinker cupric 1.2-
5.6%, iron 34-44%, sulphur 0.6-2.8%, SiO225-32%, CaO1.5-6%, AL2O33-7.8%.
2, the main points of copper matte regulus smelting process are produced
Copper pyrometallurgy realizes the separation of copper and impurity using smelting furnace, converting furnace.Smelting furnace completes copper matte regulus and major part
The separation of impurity, converting furnace complete the separation of copper, iron, sulphur.Since, copper matte regulus fusion temperature is low, liquid copper matte regulus and liquid slag are mutual
It is immiscible, the characteristics such as density contrast is big.Modern Copper making process choice makes sulphur melting.
The main points for making sulphur melting are easy Liquid segregations.But in order to realize Liquid segregation, improve the flowing of liquid slag
Property, being forced addition slag former makes iron oxide be converted to ferrosilite.Meanwhile in order to recycle the copper sulfide in clinker, being forced to use stove
Slag slow cooling-is crushed-floatation process.
Invention content
The present invention is intended to provide roasting-beneficiation method of common copper concentrate production " copper matte regulus ", with transition-choosing of copper mine substance
The method of mine selects the concentrate of cupric 60-70%, and the main component of the concentrate is also CuS2、FeS；Concentrate chemical composition, the copper
Fe clusters composition is essentially identical with the copper matte regulus of fire reduction melting output.
The present invention provides roasting-beneficiation method of copper concentrate production " copper matte regulus ", includes the following steps：Make the transition calcination steps：
By copper concentrate in roaster at a temperature of 600 DEG C -900 DEG C, anoxic transition roasts, the calcining after being made the transition and flue dust；Flotation
Step：To after transition calcination steps calcining and flue dust be firstly vulcanized mine flotation, the roughing of rear oxide ore flotation, scan, essence
Choosing, obtains the copper sulfide concentrate of cupric 60-70%, copper sulfide-copper oxide bulk concentrate of cupric 10-20% and flotation tailing；
Magnetic separation step：Magnetic separation is carried out to the flotation tailing after flotation step, obtains the iron ore concentrate and magnetic tailing of iron content 50-65%.
By copper concentrate, anoxic transition roasting at a temperature of 600 DEG C -900 DEG C, makes most of iron in copper concentrate be oxidized to magnetic
Property Fe3O4, various copper-sulphide ores are converted into Cu2S, and unoxidized iron is converted to FeS, transition roasting process in low temperature solid-state or
It is carried out in half melt；To after transition calcination steps calcining and flue dust be firstly vulcanized mine flotation, the roughing of rear oxide ore flotation,
It scans, is selected, obtain the copper sulfide concentrate of cupric 60-70%, copper sulfide-copper oxide bulk concentrate of cupric 10-20% and floating
Select tailing；Magnetic separation is carried out to the flotation tailing after flotation step, obtains the iron ore concentrate and magnetic tailing of iron content 50-65%.
Roasting-beneficiation method of copper concentrate production " copper matte regulus " provided by the invention, using roasting-ore-dressing technique instead of biography
Sulphur melting-clinker ore-dressing technique is made in system technology, so that entire technique is carried out during low temperature solid-state, copper is greatly lowered
Smeltery invests and production cost；Using solid-state transition-ore-dressing technique, the slagging process of copper matte regulus is avoided, is reducing waste
Meanwhile realizing the recycling of iron；Short grained Cu is obtained after transition roasting2S+FeS、Fe3O4, gangue, divided very well with beneficiation method
From obtaining " copper matte regulus ", Armco magnetic iron concentrate, gangue tailing of 60% or more cupric.In addition, " copper matte regulus " of output of the present invention is powdery
Concentrate, it is easier to dock flash blowing.Moreover, the present invention is to 20% copper concentrate below of Treatment of Copper and small-sized pyrometallurgical smelting factory
More effectively.
That is, producing the roasting-beneficiation method of " copper matte regulus " using copper concentrate provided by the invention, copper concentrate is controlling
Temperature, oxygen amount transition roasting process in so that various copper-sulphide ores is converted into Cu2S, unoxidized iron are converted to FeS, most of
Iron is oxidized to magnetic Fe3O4.Then pass through flotation-magnetic separation, obtain the high-grade copper concentrate of similar " copper matte regulus ", high grade iron concentrate.
It challenges to modern pyrogenic process Copper making technique with the method for transition roasting-ore dressing.
In the further embodiment of the present invention, in the calcination steps that make the transition, the Huang of the oxygen of the roasting that makes the transition for 80-95%
Iron oxidation in iron ore, chalcopyrite, roasting air excess coefficient are 0.3-0.7.
In the further embodiment of the present invention, the type of furnace of roaster is fluidizing reactor, rotary kiln or Muffle furnace.
In the further embodiment of the present invention, the sulfide flotation in flotation step：It is followed successively by secondary roughing, secondary
It scans and triple cleaning.
In the further embodiment of the present invention, in sulfide flotation, floating agent composition is calculated as fourth Huang by mine per ton
60-300 grams, BP50-100 grams of medicine.
In the further embodiment of the present invention, the oxide ore flotation in flotation step：It is followed successively by secondary roughing, secondary
It scans and recleaning.
In the further embodiment of the present invention, in oxide ore flotation, floating agent composition is calculated as vulcanizing by mine per ton
500-1500 grams of sodium, 500-1500 grams of ammonium sulfate, 60-300 grams of amyl sodium xanthate, No. two 50-120 grams of oil.
In the further embodiment of the present invention, in magnetic separation step, magnetic separation is carried out to the flotation tailing after flotation step,
It is followed successively by 0.02T permanent magnetic motor magnetic separation, the magnetic separation of 0.05T permanent magnetic motors, 0.8T high gradient magnetic separator magnetic separation.
In the further embodiment of the present invention, roaster is Muffle furnace；And after transition calcination steps, before flotation step
Further include：By make the transition calcination steps after calcining and flue dust by anoxic transition roasting after product be milled to mineral aggregate fineness be grain size it is small
The 70%-85% of total ore grinding mineral aggregate quality is accounted in the mineral aggregate of 0.074mm.
Description of the drawings
Fig. 1 is the process flow chart in the embodiment of the present invention；
Fig. 2 is the flow chart of roasting-beneficiation method of the copper concentrate production " copper matte regulus " in the embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for clearer
Illustrate technical scheme of the present invention, therefore be only used as example, and not intended to limit the protection scope of the present invention.
Fig. 1 is the process flow chart in the embodiment of the present invention；Fig. 2 is that the copper concentrate in the embodiment of the present invention produces " copper matte regulus "
Roasting-beneficiation method flow chart.
As Figure 1-Figure 2, roasting-beneficiation method of a kind of copper concentrate production " copper matte regulus " provided by the invention, including with
Lower step：
S101：Make the transition calcination steps：By copper concentrate in roaster at a temperature of 600 DEG C -900 DEG C, anoxic transition roasting obtains
Calcining after to transition and flue dust.Wherein, in the transition calcination steps, it is described transition roasting oxygen for 80-95% Huang
Iron oxidation in iron ore, chalcopyrite, roasting air excess coefficient are 0.3-0.7；The type of furnace of the roaster be fluidizing reactor,
Rotary kiln or Muffle furnace.
By copper concentrate, anoxic transition roasting at a temperature of 600 DEG C -900 DEG C, makes most of iron in copper concentrate be oxidized to magnetic
Property Fe3O4, various copper-sulphide ores are converted into Cu2S, and unoxidized iron is converted to FeS, transition roasting process in low temperature solid-state or
It is carried out in half melt.
S102：Flotation step：To after the transition calcination steps calcining and flue dust be firstly vulcanized mine flotation, rear oxidation
The roughing of mine flotation scans, is selected, obtains the copper sulfide concentrate of cupric 60-70%, copper sulfide-copper oxide of cupric 10-20%
Bulk concentrate and flotation tailing.Wherein, the sulfide flotation in the flotation step：It is followed successively by secondary roughing, secondary sweeps
Choosing and triple cleaning；In the sulfide flotation, floating agent composition is calculated as 60-300 grams of butyl xanthate, BP50-100 by mine per ton
Gram；The oxide ore flotation in the flotation step：It is followed successively by secondary roughing, secondary scans and recleaning；The oxidation
In mine flotation, floating agent composition is calculated as 500-1500 grams of vulcanized sodium, 500-1500 grams of ammonium sulfate, amyl sodium xanthate by mine per ton
60-300 grams, No. two 50-120 grams of oil.
To after the transition calcination steps calcining and flue dust be firstly vulcanized mine flotation, the roughing of rear oxide ore flotation,
It scans, is selected, obtain the copper sulfide concentrate of cupric 60-70%, copper sulfide-copper oxide bulk concentrate of cupric 10-20% and floating
Select tailing；Sulfide flotation includes successively sulphide ore roughing twice, sulphide ore is scanned twice and sulphide ore is selected three times；The oxygen
Change mine flotation：It is followed successively by secondary roughing, secondary scans and recleaning；So as to which the mineral in each step are fully floated
Choosing, further improves the element utilization rate in raw material.
S103：Magnetic separation step：Magnetic separation is carried out to the flotation tailing after the flotation step, obtains the iron of iron content 50-65%
Concentrate and magnetic tailing.In the magnetic separation step, magnetic separation is carried out to the flotation tailing after the flotation step, is followed successively by 0.02T
Permanent magnetic motor magnetic separation, the magnetic separation of 0.05T permanent magnetic motors, 0.8T high gradient magnetic separator magnetic separation.To the flotation tailing after the flotation step into
Row magnetic separation obtains the iron ore concentrate and magnetic tailing of iron content 50-65%；Because after anoxic transition roasting, the magnetism of ferro element is not
Together, the low field high intensity magnetic separation that flotation tailing is done to 0.02T, obtains the high-grade concentrate of iron content 60% or so；It then will be primary
Magnetic tailing enters the midfield high intensity magnetic separation of 0.05T, obtains the low-grade concentrate of iron content 50% or so, secondary magnetic tailing is entered
High gradient magnetic separator carries out the high field intensity magnetic separation of 0.8T, and obtained high-field intensity magnetic concentrate selection is returned to midfield high intensity magnetic separation, tailing row
It puts；To reduce the discharge of waste while the metallic element utilization rate in further increasing raw material.
The present invention is further explained in the light of specific embodiments.
Embodiment one
1 copper concentrate main component of table and content
| Main component | Cu | Fe | S | SiO2 | CaO | AL2O3 |
| Content/% | 18.4 | 23.6 | 22.6 | 11.6 | 6.1 | 3.67 |
By above-mentioned copper concentrate 900 DEG C in Muffle furnace, product, that is, roasted ore (calcining cigarette after the transition roasting of semi-hermetic anoxic
Dirt) yield 92%；It is that mineral aggregate of the grain size less than 0.074mm accounts for always that product after the anoxic transition roasting, which is milled to mineral aggregate fineness,
The 80% of ore grinding mineral aggregate quality, carry out sulfide flotation, carry out successively secondary roughing, it is secondary scan, triple cleaning, floating agent
For 100 grams of butyl xanthate, BP80 grams of foaming agent, high-grade copper concentrate (copper sulfide concentrate) and the sulphide ore for obtaining cupric 62.4% are floating
Select tailing；By sulfide flotation tailing carry out oxide ore flotation, carry out successively secondary roughing, it is secondary scan, recleaning, flotation
Medicament group becomes：500 grams of vulcanized sodium, 800 grams of ammonium sulfate and 100 grams of amyl sodium xanthate, foaming agent are 80 grams of No. two oil, are contained
The low-grade copper concentrate (copper sulfide-copper oxide bulk concentrate) and flotation tailing of copper 17.9%；To flotation tailing magnetic separation, first do
The permanent magnetic motor low field high intensity magnetic separation of 0.02T, obtains the high-grade concentrate of iron content 61.5%；Magnetic tailing is entered and is 0.05T
Permanent magnetic motor midfield high intensity magnetic separation, obtain the low-grade concentrate of iron content 50.2%, secondary magnetic tailing entered into high gradient magnetic separator
Obtained high-field intensity magnetic concentrate selection is returned to midfield high intensity magnetic separation, tailings discharging by the magnetic separation for carrying out 0.8T.It will be obtained in embodiment 1
Each resulting information be listed in the table below, as shown in table 2：
2 each resulting information of table
Certainly, the case where being enumerated in addition to embodiment one, the type of furnace of other roasters, the temperature of transition roasting, air excess
Coefficient, the dosage of butyl xanthate, the dosage of polyvinyl alcohol, vulcanized sodium, ammonium sulfate, amyl sodium xanthate, No. two oily dosages and general
It is that mineral aggregate of the grain size less than 0.074mm accounts for total ore grinding mineral aggregate that calcining and flue dust after the transition calcination steps, which are milled to mineral aggregate fineness,
Other quality it is also possible.
Roasting-beneficiation method of copper concentrate production " copper matte regulus " provided by the invention, using roasting-ore-dressing technique instead of biography
Sulphur melting-clinker ore-dressing technique is made in system technology, so that entire technique is carried out during low temperature solid-state, copper is greatly lowered
Smeltery invests and production cost；Using solid-state transition-ore-dressing technique, the slagging process of copper matte regulus is avoided, is reducing waste
Meanwhile realizing the recycling of iron；Short grained Cu is obtained after transition roasting2S+FeS、Fe3O4, gangue, divided very well with beneficiation method
From obtaining " copper matte regulus ", Armco magnetic iron concentrate, gangue tailing of 60% or more cupric.In addition, " copper matte regulus " of output of the present invention is powdery
Concentrate, it is easier to dock flash blowing.Moreover, the present invention is to 20% copper concentrate below of Treatment of Copper and small-sized pyrometallurgical smelting factory
More effectively.
That is, producing the roasting-beneficiation method of " copper matte regulus " using copper concentrate provided by the invention, copper concentrate is controlling
Temperature, oxygen amount transition roasting process in so that various copper-sulphide ores is converted into Cu2S, unoxidized iron are converted to FeS, most of
Iron is oxidized to magnetic Fe3O4.Then pass through flotation-magnetic separation, obtain the high-grade copper concentrate of similar " copper matte regulus ", high grade iron concentrate.
It challenges to modern pyrogenic process Copper making technique with the method for transition roasting-ore dressing.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implies relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned implementation
Example is changed, changes, replacing and modification.
Claims (9)
1. a kind of roasting-beneficiation method of copper concentrate production " copper matte regulus ", which is characterized in that include the following steps：
Make the transition calcination steps：By copper concentrate in roaster at a temperature of 600 DEG C -900 DEG C, anoxic transition roasting, after obtaining transition
Calcining and flue dust；
Flotation step：To after the transition calcination steps calcining and flue dust be firstly vulcanized mine flotation, rear oxide ore flotation
Roughing scans, is selected, obtains the copper sulfide concentrate of cupric 60-70%, copper sulfide-copper oxide bulk concentrate of cupric 10-20%
And flotation tailing；
Magnetic separation step：Magnetic separation is carried out to the flotation tailing after the flotation step, obtains iron ore concentrate and the magnetic separation of iron content 50-65%
Tailing.
2. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
In the transition calcination steps, the oxygen of the transition roasting is aoxidized for the iron in the pyrite of 80-95%, chalcopyrite,
Roasting air excess coefficient is 0.3-0.7.
3. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
The type of furnace of the roaster is：Fluidizing reactor, rotary kiln or Muffle furnace.
4. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
The sulfide flotation in the flotation step：It is followed successively by secondary roughing, secondary scans and triple cleaning.
5. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 4, which is characterized in that
In the sulfide flotation, floating agent composition is calculated as 60-300 grams of butyl xanthate, 50-100 grams of polyvinyl alcohol by mine per ton.
6. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
The oxide ore flotation in the flotation step：It is followed successively by secondary roughing, secondary scans and recleaning.
7. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 6, which is characterized in that
In the oxide ore flotation, floating agent composition is calculated as 500-1500 grams of vulcanized sodium, ammonium sulfate 500-1500 by mine per ton
Gram, 60-300 grams of amyl sodium xanthate, No. two 50-120 grams of oil.
8. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
In the magnetic separation step, magnetic separation is carried out to the flotation tailing after the flotation step, is followed successively by 0.02T permanent magnetic motor magnetic separation,
The magnetic separation of 0.05T permanent magnetic motors and 0.8T high gradient magnetic separator magnetic separation.
9. roasting-beneficiation method of copper concentrate production " copper matte regulus " according to claim 1, which is characterized in that
The roaster is fluidizing reactor；
And after the transition calcination steps, further include before the flotation step：By the calcining and cigarette after the transition calcination steps
It is the 70%-85% that mineral aggregate of the grain size less than 0.074mm accounts for total ore grinding mineral aggregate quality that dirt, which is milled to mineral aggregate fineness,.
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| CN106902974B (en) * | 2017-03-09 | 2018-01-12 | 昆明理工大学 | A kind of beneficiation method of low oxidation ratio high-combination rate mixed copper ore |
| CN107398353B (en) * | 2017-07-06 | 2019-03-29 | 万宝矿产有限公司 | One kind being used for industrial copper cobalt sulfide ore two-region method for floating |
| CN112897672A (en) * | 2021-01-25 | 2021-06-04 | 中南大学 | Solid vulcanizing agent, microetching copper-containing wastewater recycling treatment system and control method |
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| CN104152714A (en) * | 2014-08-01 | 2014-11-19 | 西安建筑科技大学 | Method for smelting nickel-copper from sulfide ores by virtue of pyrogenic process and extracting iron |
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| CN102260787A (en) * | 2011-07-29 | 2011-11-30 | 西北矿冶研究院 | Method for comprehensively recovering iron from copper smelting slag flotation tailings |
| CN103146911A (en) * | 2013-03-27 | 2013-06-12 | 西南科技大学 | Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals |
| CN104152714A (en) * | 2014-08-01 | 2014-11-19 | 西安建筑科技大学 | Method for smelting nickel-copper from sulfide ores by virtue of pyrogenic process and extracting iron |
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