CN110465404A - The method for handling carbonate containing iron selection tailings - Google Patents
The method for handling carbonate containing iron selection tailings Download PDFInfo
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- CN110465404A CN110465404A CN201810436656.6A CN201810436656A CN110465404A CN 110465404 A CN110465404 A CN 110465404A CN 201810436656 A CN201810436656 A CN 201810436656A CN 110465404 A CN110465404 A CN 110465404A
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- stages
- magnetic separation
- concentrate
- reverse flotation
- tailings
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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
Abstract
The invention discloses the methods of processing carbonate containing iron selection tailings, comprising: (1) carbonate containing iron selection tailings is carried out a stages of magnetic separation, to obtain a stages of magnetic separation tailing and a stages of magnetic separation concentrate；(2) two stages of magnetic separation are carried out after a stages of magnetic separation concentrate being carried out ore grinding and classification, to obtain two stages of magnetic separation concentrate and two stages of magnetic separation tailings；(3) two stages of magnetic separation concentrate are mixed with dispersing agent, inhibitor, collecting agent and carries out one section of reverse flotation, to obtain one section of concentrate through reverse flotation ore pulp and one section of reverse flotation tailing；(4) one section of concentrate through reverse flotation ore pulp is mixed with pH regulator, the inhibitor, activator and the collecting agent and carries out two sections of reverse flotations and scans, to obtain two sections of concentrate through reverse flotation ore pulps and to scan tailing；(5) two sections of concentrate through reverse flotation ore pulps are subjected to dense and filtration treatment, to obtain iron ore concentrate.The iron ore concentrate that Iron grade is greater than 57% can be obtained using this method, improve the economic benefit of enterprise, mitigate influence of the carbonate containing iron selection tailings to environment.
Description
Technical field
The invention belongs to resource comprehensive utilizations to utilize technical field, specifically, the present invention relates to processing carbonate containing choosings
The method of iron tailings.
Background technique
Currently, each iron mine beneficiation factory is all made of magnetic separation both at home and abroad or method for floating selects iron, produce a large amount of low-grade
Difficult tailing, most of tailing is fed directly to Tailings Dam stockpiling, directly discarded, so that resource of tailings does not obtain abundant benefit
With mineral resources are wasted, and a large amount of land occupation resources of Tailings Dam, are damaged to environment, to people's lives and properties
It constitutes a threat to；Some tailings then be used to fill underground goaf；Some tailings then be used to make construction material, produce wall
Material, cement, fired brick, glassware, architectural pottery and tailing microcrystal glass etc.；Some tailings then be used to produce composite wood
Material and refractory material；Some tailings are then used as concrete coarse-fine aggregate and building sand, as pavement asphalt blend composition；Have
Tailing then be used to make soil conditioner and soil and fertilizer etc..Ferrous metal resource in iron selection tailings fails to obtain effective benefit
With.
Therefore the technology of existing processing iron selection tailings is further improved.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of method for handling carbonate containing iron selection tailings.Iron grade can be obtained greater than 57% using this method
Iron ore concentrate, improve the economic benefit of enterprise, while mitigating influence of the carbonate containing iron selection tailings to environment.
In one aspect of the invention, the invention proposes a kind of methods for handling carbonate containing iron selection tailings, according to this
The embodiment of invention, this method comprises:
(1) carbonate containing iron selection tailings are subjected to a stages of magnetic separation, to obtain a stages of magnetic separation tailing and a stages of magnetic separation concentrate；
(2) two stages of magnetic separation are carried out after the stages of magnetic separation concentrate being carried out ore grinding and classification, to obtain two stages of magnetic separation essence
Mine and two stages of magnetic separation tailings；
(3) the two stages of magnetic separation concentrate is mixed with dispersing agent, inhibitor, collecting agent and carries out one section of reverse flotation, so as to
To one section of concentrate through reverse flotation ore pulp and one section of reverse flotation tailing；
(4) one section of concentrate through reverse flotation ore pulp is mixed with pH regulator, the inhibitor, activator and the collecting agent
It closes and carries out two sections of reverse flotations and scan, to obtain two sections of concentrate through reverse flotation ore pulps and to scan tailing；
(5) two sections of concentrate through reverse flotation ore pulps are subjected to dense and filtration treatment, to obtain dense Hou Shui and iron essence
Mine.
The method of processing carbonate containing iron selection tailings according to an embodiment of the present invention, because of the granularity of carbonate containing iron selection tailings
It can be handled without further ore grinding and meet requirement of the stages of magnetic separation to granularity, can saved before a stages of magnetic separation as a result, at ore grinding
The energy consumption of reason, and then reduce the energy consumption of entire method；Carbonate containing iron selection tailings are instead floated through a stages of magnetic separation, two stages of magnetic separation, one section
Choosing two sections of reverse flotations, is scanned, after dense and filtration treatment, and the iron ore concentrate that Iron grade is greater than 57%, entire technique stream can be obtained
Journey has the advantages of simple structure and easy realization industrialization, and the iron ore concentrate of recycling improves the economic benefit of enterprise, and carbonate containing is selected iron
After tailing carries out above-mentioned processing, its influence to environment can reduce.
In addition, the method for processing carbonate containing iron selection tailings according to the above embodiment of the present invention can also have it is following attached
The technical characteristic added:
In some embodiments of the invention, in step (1), the Iron grade of the carbonate containing iron selection tailings is 10-
18%.
In some embodiments of the invention, in step (1), partial size is less than 200 in the carbonate containing iron selection tailings
Purpose accounting is greater than 60%.
In some embodiments of the invention, in step (1), the magnetic field strength of a stages of magnetic separation is 0.8-1.2T.
Be conducive to improve the grade of a stages of magnetic separation concentrate as a result,.
In some embodiments of the invention, in step (2), the stages of magnetic separation concentrate of two stages of magnetic separation is carried out
Middle partial size is greater than 85% less than the accounting of 325 mesh.Be conducive to improve the grade of two stages of magnetic separation concentrate as a result,.
In some embodiments of the invention, in step (2), the magnetic field strength of two stages of magnetic separation is 0.3-0.7T.
It can further improve the grade of two stages of magnetic separation concentrate as a result,.
In some embodiments of the invention, in step (3), the dispersing agent be selected from sodium carbonate, waterglass, six partially
At least one of sodium phosphate.Be conducive to improve the grade of one section of concentrate through reverse flotation ore pulp as a result,.
In some embodiments of the invention, in step (3), the inhibitor is to form sediment selected from pre-gelatinized starch, corn
At least one of powder, causticization starch.It can further improve the grade of one section of concentrate through reverse flotation ore pulp as a result,.
In some embodiments of the invention, in step (3), the collecting agent is selected from enuatrol, odium stearate, 9-
At least one of hydroxyl sodium stearate.It can further improve the grade of one section of concentrate through reverse flotation ore pulp as a result,.
In some embodiments of the invention, in step (3), be based on 1 ton of carbonate containing iron selection tailings, described point
The additional amount of powder is 1400-1600g, and the additional amount 150-250g of the inhibitor, the additional amount of the collecting agent is 60-
100g.It can further improve the grade of one section of concentrate through reverse flotation ore pulp as a result,.
In some embodiments of the invention, in step (4), the pH regulator is selected from sodium hydroxide, sodium carbonate
At least one of.Be conducive to improve the grade of two sections of concentrate through reverse flotation ore pulps as a result,.
In some embodiments of the invention, in step (4), the activator is in calcium oxide, calcium chloride
At least one.It can further improve the grade of two sections of concentrate through reverse flotation ore pulps as a result,.
In some embodiments of the invention, in step (4), 1 ton of carbonate containing iron selection tailings, the pH are based on
The additional amount of regulator is 500-700g, and the additional amount of the inhibitor is 420-580g, and the additional amount of the activator is
800-1200g, the additional amount of the collecting agent are 165-275g.It can further improve two sections of concentrate through reverse flotation ore pulps as a result,
Grade.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the method flow schematic diagram of processing carbonate containing iron selection tailings according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In one aspect of the invention, the invention proposes a kind of methods for handling carbonate containing iron selection tailings, according to this
The embodiment of invention, with reference to Fig. 1, this method comprises:
S100: carbonate containing iron selection tailings are subjected to a stages of magnetic separation
In the step, carbonate containing iron selection tailings are subjected to a stages of magnetic separation, to obtain a stages of magnetic separation tailing and one section of magnetic
Concentrate selection.Specifically, according to one embodiment of present invention, partial size can be for less than 200 in existing carbonate containing iron selection tailings
Purpose accounting is greater than 60%, meets a stages of magnetic separation to the Particle size requirements of carbonate containing iron selection tailings, can save a stages of magnetic separation as a result,
The energy consumption of ore grinding processing before, and then reduce the energy consumption of entire method.Still another embodiment in accordance with the present invention, carbonate containing choosing
Iron grade is 10-18% in iron tailings.A stages of magnetic separation is carried out after the agitated 3min of carbonate containing iron selection tailings, Iron grade can be obtained
For a stages of magnetic separation concentrate of 30-32%.
According to still another embodiment of the invention, the magnetic field strength of a stages of magnetic separation can be 0.8-1.2T.Inventors have found that
If the magnetic field strength of a stages of magnetic separation is too low, stages of magnetic separation concentrate Iron grade obtained is higher, but yield is very low；And if one
The magnetic field strength of stages of magnetic separation is excessively high, then stages of magnetic separation concentrate yield obtained is higher, but grade is lower.Inventor is by a large amount of
Experiment has been surprisingly found that, when the magnetic field strength of a stages of magnetic separation is 0.8-1.2T, a stages of magnetic separation of high-grade and high yield can be obtained
Concentrate.
S200: two stages of magnetic separation are carried out after a stages of magnetic separation concentrate is carried out ore grinding and classification
In the step, two stages of magnetic separation are carried out after a stages of magnetic separation concentrate is carried out ore grinding and classification, to obtain two stages of magnetic separation
Concentrate and two stages of magnetic separation tailings.Specifically, first a stages of magnetic separation concentrate is classified, so that raw material particle size meets two stages of magnetic separation
It is required that the undesirable stages of magnetic separation concentrate of partial size after classification is carried out ore grinding, then the material after ore grinding is classified, by
This, until the partial size of all stages of magnetic separation concentrate all meets the requirement of two stages of magnetic separation, after two stages of magnetic separation, Iron grade, which can be obtained, is
The two stages of magnetic separation concentrate and two stages of magnetic separation tailings of 45-47%.
According to one embodiment of present invention, carrying out partial size in a stages of magnetic separation concentrate of two stages of magnetic separation can be for less than 325
Purpose accounting is greater than 85%.Inventors have found that if carry out a stages of magnetic separation concentrate of two stages of magnetic separation partial size is excessive or accounting mistake
Small, then resulting two stages of magnetic separation concentrate grade reduces, if the partial size for carrying out a stages of magnetic separation concentrate of two stages of magnetic separation is too small or accounts for
Than excessive, then the energy consumption of required ore grinding increases, and inventor has found by many experiments, in the above-mentioned partial size and accounting of the application
On the basis of, further continue to reduce partial size and increase accounting is lower to the effect for the grade for improving two stages of magnetic separation concentrate.By
This, can improve two compared to other using the partial size and accounting of the stages of magnetic separation concentrate described herein for carrying out two stages of magnetic separation
The energy consumption of technique is reduced on the basis of stages of magnetic separation concentrate.
Still another embodiment in accordance with the present invention, the magnetic field strength of two stages of magnetic separation can be 0.3-0.7T.Inventors have found that
The partial size of the material of two stages of magnetic separation of cause uses field strength more lower than a stages of magnetic separation magnetic separation strength less than a stages of magnetic separation.When two
When the magnetic field strength of stages of magnetic separation is lower, the content of iron ore concentrate increases in two stages of magnetic separation tailings, and the grade of two stages of magnetic separation concentrate reduces；
When the magnetic field strength of two stages of magnetic separation is higher, the content of impurity will increase in two stages of magnetic separation concentrate, can equally reduce by two stages of magnetic separation
The grade of concentrate.
S300: two stages of magnetic separation concentrate are mixed with dispersing agent, inhibitor, collecting agent and carry out one section of reverse flotation
In the step, two stages of magnetic separation concentrate are mixed with dispersing agent, inhibitor, collecting agent and carry out one section of reverse flotation, so as to
Obtain one section of concentrate through reverse flotation ore pulp and one section of reverse flotation tailing.Specifically, first by two stages of magnetic separation concentrate stirring 5 minutes, then
It is mixed with dispersing agent, inhibitor and collecting agent, it, can be by two stages of magnetic separation concentrate under the action of dispersing agent, inhibitor and collecting agent
In the impurity such as gangue flotate, obtain one section of concentrate through reverse flotation ore pulp and one section of reverse flotation tailing.Inventors have found that dispersion
Agent can effectively be adsorbed in the surface of ore pulp, be easily dispersed the solid particles surface of cohesion；Inhibitor chemisorption is in iron ore
Object surface produces into hydrophilic film on its surface, keeps its surface strongly hydrophilic, achieve the purpose that inhibition；Collecting agent can effectively be inhaled
Carbonate mineral surface is invested, by air flotation with bubble floating.
According to one embodiment of present invention, dispersing agent can in sodium carbonate, waterglass, calgon extremely
It is one of few.Inventors have found that the dispersing agent that the application uses, especially sodium carbonate, can make entire ore pulp system uniform, suspension
Can increase, be not easy to precipitate, guarantee that entire ore pulp system physico-chemical property is the same, and itself be easy preparation, it is cheap.
Still another embodiment in accordance with the present invention, inhibitor can be for selected from pre-gelatinized starch, cornstarch, causticization starch
At least one of.Inventors have found that in one section of reverse flotation, inhibitor can chemisorption in iron mineral surface, on its surface
Hydrophilic film is produced into, keeps iron mineral surface strongly hydrophilic, achievees the purpose that inhibition.Especially pre-gelatinized used by the application is formed sediment
Powder, soluble, solution is more stable, is not easy to precipitate.
According to still another embodiment of the invention, collecting agent can be for selected from enuatrol, odium stearate, 9- hydroxy stearic acid
At least one of sodium.Inventors have found that the collecting agent that the application uses, especially enuatrol, as a kind of conventional yin from
Sub- collecting agent, it is cheap and be easy to get, it can be effectively adsorbed in carbonate mineral surface, by air flotation with bubble
It floats.
According to still another embodiment of the invention, it is based on 1 ton of carbonate containing iron selection tailings, the additional amount of dispersing agent can be
The additional amount of 1400-1600g, inhibitor can be 150-250g, and the additional amount of collecting agent can be 60-100g.Invention human hair
Existing, when dispersing agent additive amount is excessive, although little to influence of flotation, technic index is not improved preferably, when point
When powder additive amount is very few, ore pulp cannot effectively disperse, and floatation indicators are affected, and the purpose of sorting is not achieved；Work as suppression
It when preparation additive amount is excessive, is equally adsorbed on carbonate mineral, leads to floating mineral low yield, do not have the effect of separation
Fruit, in addition when inhibitor additive amount is very few, iron mineral cannot effectively inhibit, and cause iron mineral with carbonate mineral
It floats, influences the rate of recovery of iron mineral；When collecting agent additive amount is excessive, supernatant is excessive, will lead to iron mineral and is mingled with one
It rises and floats, to influence the rate of recovery of iron mineral, when collecting agent additive amount is very few, carbonate mineral float-amount is few, same shadow
Ring the rate of recovery of iron mineral.
S400: one section of concentrate through reverse flotation ore pulp is mixed to two sections of progress with pH regulator, inhibitor, activator and collecting agent
It reverse flotation and scans
In the step, one section of concentrate through reverse flotation ore pulp is mixed into progress with pH regulator, inhibitor, activator and collecting agent
It two sections of reverse flotations and scans, to obtain two sections of concentrate through reverse flotation ore pulps and to scan tailing.Specifically, first using pH regulator tune
The pH value of ore pulp is saved to 11-12, inhibitor, activator and collecting agent is then added and carries out two sections of reverse flotations, obtains two sections and instead floats
Concentrate selection ore pulp and two sections of reverse flotation tailings, and two sections of reverse flotation tailings are mixed with collecting agent, it is scanned, obtains scanning essence
Mine ore pulp and tailing is scanned, resulting scavenger concentrate ore pulp, which can return to, re-starts two sections of reverse flotations, is conducive to improve iron as a result,
The rate of recovery of concentrate, and obtain two sections of concentrate through reverse flotation ore pulps that grade is not less than 57%.Inventors have found that pH regulator can be with
It causes the action condition for being conducive to floating agent, improve mineral surfaces situation and ore pulp ion composition；Inhibitor chemisorption in
Iron mineral surface produces into hydrophilic film on its surface, keeps its surface strongly hydrophilic, achieve the purpose that inhibition；In strong alkaline condition
The ionizable Ca out of lower activator2+,Ca2+Quartz surfaces are adsorbed in, the effect of quartz and collecting agent is promoted；Collecting agent is effectively inhaled
Quartz surfaces are invested, by air flotation with bubble floating.
According to one embodiment of present invention, pH regulator can be in sodium hydroxide, waterglass, calgon
At least one of.Inventors have found that pH regulator used by the application, especially sodium hydroxide, as the most common pH tune
Whole dose, the pH value of ore pulp can be effectively improved, the surface appearance for being formed with the condition conducive to the effect of other floating agents, improving mineral
It is formed with ore pulp ion.
Still another embodiment in accordance with the present invention, inhibitor can be for selected from pre-gelatinized starch, cornstarch, causticization starch
At least one of.Inventors have found that in two sections of reverse flotations, inhibitor can chemisorption in iron mineral surface, on its surface
Hydrophilic film is produced into, keeps iron mineral surface strongly hydrophilic, achievees the purpose that inhibition.Especially pre-gelatinized used by the application is formed sediment
Powder is soluble, and solution is more stable, is not easy to precipitate.
According to still another embodiment of the invention, activator can be for selected from least one of calcium oxide, calcium chloride.Hair
Bright people discovery, in two sections of reverse flotations, under strongly alkaline conditions activator it is ionizable go out Ca2+, Ca2+Quartz surfaces are adsorbed in, are promoted
Into the effect of quartz and collecting agent；Collecting agent can effectively be adsorbed in quartz surfaces, by air flotation with bubble floating.Especially
It is that calcium oxide used by the application is easily prepared and obtained as common industrial goods.
According to still another embodiment of the invention, collecting agent can be for selected from enuatrol, odium stearate, 9- hydroxy stearic acid
At least one of sodium.Inventors have found that collecting agent used by the application, especially enuatrol, as a kind of conventional yin
Ion collecting agent, it is cheap and be easy to get, it can be effectively adsorbed in carbonate mineral surface, by air flotation with gas
Bubble floats.
According to still another embodiment of the invention, it is based on 1 ton of carbonate containing iron selection tailings, the additional amount of pH regulator can be with
For 500-700g, the additional amount of inhibitor can be 420-580g, and the additional amount of activator can be 800-1200g, collecting agent
Additional amount can be 165-275g.Wherein, a specific embodiment according to the present invention, during two sections of reverse flotations,
Based on 1 ton of carbonate containing iron selection tailings, the additional amount of collecting agent can be contained during scanning based on 1 ton for 150-250g
Carbonate iron selection tailings, the additional amount of collecting agent can be 15-25g.Inventors have found that when pH regulator additive amount is excessive,
Although little to influence of flotation, technic index is not significantly improved, when pH regulator additive amount is very few, pH values of pulp
It is worth too low, activator and collecting agent cannot effectively be adsorbed in quartz surfaces, and quartzy float-amount is few, influences the recycling of iron mineral
Rate；It when inhibitor additive amount is excessive, is equally adsorbed on quartz, leads to floating mineral low yield, do not have the effect of separation
Fruit, in addition when inhibitor additive amount is very few, iron mineral cannot effectively inhibit, and iron mineral is caused to float with quartz,
Influence the rate of recovery of iron mineral；When activator additive amount is excessive, although little to influence of flotation, technic index is not obtained
It is significant to improve, when activator additive amount is very few, ore pulp Ca2+Concentration is too low, cannot effectively be adsorbed in quartz surfaces, quartz
Float-amount is few, influences the rate of recovery of iron mineral；When collecting agent additive amount is excessive, supernatant is excessive, will lead to iron mineral and is pressed from both sides
Miscellaneous to float together, to influence the rate of recovery of iron mineral, when collecting agent additive amount is very few, quartzy float-amount is few, same to influence
The rate of recovery of iron mineral.
S500: two sections of concentrate through reverse flotation ore pulps are subjected to dense and filtration treatment
In the step, two sections of concentrate through reverse flotation ore pulps are subjected to dense and filtration treatment, to obtain dense Hou Shui and iron
Concentrate.Specifically, two sections of concentrate through reverse flotation ore pulps, after dense and filtration treatment, the moisture content of gained iron ore concentrate is 10-12%.
The method of processing carbonate containing iron selection tailings according to an embodiment of the present invention, because of the granularity of carbonate containing iron selection tailings
It can be handled without further ore grinding and meet requirement of the stages of magnetic separation to granularity, can saved before a stages of magnetic separation as a result, at ore grinding
The energy consumption of reason, and then reduce the energy consumption of entire method；Carbonate containing iron selection tailings are instead floated through a stages of magnetic separation, two stages of magnetic separation, one section
Choosing two sections of reverse flotations, is scanned, after dense and filtration treatment, and the iron ore concentrate that Iron grade is greater than 57%, entire technique stream can be obtained
Journey has the advantages of simple structure and easy realization industrialization, and the iron ore concentrate of recycling improves the economic benefit of enterprise, and carbonate containing is selected iron
After tailing carries out above-mentioned processing, its influence to environment can reduce.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment
By Iron grade be 10-18%, partial size less than the accounting of 200 mesh greater than 60% carbonate containing iron selection tailings it is agitated
A stages of magnetic separation is carried out after 3min, magnetic field strength 1.00T obtains the stages of magnetic separation concentrate that ferrous grade is 30~32%；Then
Above-mentioned stages of magnetic separation concentrate is classified, so that raw material particle size meets the requirement of two stages of magnetic separation, i.e. partial size is accounted for less than 325 purposes
Than being greater than 85%, and ore grinding will be carried out by the undesirable stages of magnetic separation concentrate of partial size after classification, then by the material after ore grinding into
Row classification, as a result, until the partial size of all stages of magnetic separation concentrate all meets the requirement of two stages of magnetic separation, the magnetic field strength of two stages of magnetic separation
The two stages of magnetic separation concentrate and two stages of magnetic separation tailings that Iron grade is 45-47% can be obtained after two stages of magnetic separation for 0.50T；Then will
Two stages of magnetic separation concentrate stir 5 minutes, mix with dispersing agent sodium carbonate, inhibitor pre-gelatinized starch, collecting agent enuatrol, and are based on
1 ton of carbonate containing iron selection tailings, the additional amount of sodium carbonate are 1500g, and the additional amount of pre-gelatinized starch is 200g, and enuatrol adds
Entering amount is 80g, carries out one section of reverse flotation, obtains one section of concentrate through reverse flotation ore pulp and one section of reverse flotation tailing；Then agitated
After 5min, sized mixing using sodium hydroxide to one section of concentrate through reverse flotation ore pulp so that the pH value of ore pulp is to 11-12, then plus
Enter pre-gelatinized starch, calcium oxide and enuatrol and carry out two sections of reverse flotations, and is based on 1 ton of carbonate containing iron selection tailings, sodium hydroxide
Additional amount be 600g, the additional amount of pre-gelatinized starch is 500g, and the additional amount of calcium oxide is 1000g, the additional amount of enuatrol
For 200g, two sections of concentrate through reverse flotation ore pulps and two sections of reverse flotation tailings are obtained, and two sections of reverse flotation tailings are mixed with enuatrol
It is scanned, wherein being based on 1 ton of carbonate containing iron selection tailings, the additional amount of enuatrol is 20g, scans to obtain scavenger concentrate ore pulp
With scan tailing, resulting scavenger concentrate ore pulp comes back for two sections of reverse flotations, this makes it possible to obtain Iron grade be greater than 57% two
Section concentrate through reverse flotation ore pulp；Above-mentioned two sections of concentrate through reverse flotation ore pulps are finally subjected to dense and filtration treatment, obtaining moisture content is
The iron ore concentrate of 10-12%, two stages of magnetic separation tailing, one section of reverse flotation tailing and scans tailing and merges into true tailings.
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 embodiment or examples.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
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of method for handling carbonate containing iron selection tailings characterized by comprising
(1) carbonate containing iron selection tailings are subjected to a stages of magnetic separation, to obtain a stages of magnetic separation tailing and a stages of magnetic separation concentrate；
(2) will the stages of magnetic separation concentrate carry out ore grinding and classification after carry out two stages of magnetic separation, so as to obtain two stages of magnetic separation concentrate and
Two stages of magnetic separation tailings；
(3) the two stages of magnetic separation concentrate is mixed with dispersing agent, inhibitor, collecting agent and carries out one section of reverse flotation, to obtain one
Section concentrate through reverse flotation ore pulp and one section of reverse flotation tailing；
(4) one section of concentrate through reverse flotation ore pulp is mixed into pH regulator, the inhibitor, activator and the collecting agent
It two sections of reverse flotations of row and scans, to obtain two sections of concentrate through reverse flotation ore pulps and to scan tailing；
(5) two sections of concentrate through reverse flotation ore pulps are subjected to dense and filtration treatment, to obtain dense rear water and iron ore concentrate.
2. the method according to claim 1, wherein in step (1), the iron of the carbonate containing iron selection tailings
Grade is 10-18%.
3. method according to claim 1 or 2, which is characterized in that in step (1), the carbonate containing iron selection tailings
Middle partial size is greater than 60% less than the accounting of 200 mesh.
4. according to the method described in claim 3, it is characterized in that, in step (1), the magnetic field strength of a stages of magnetic separation is
0.8-1.2T。
5. the method according to claim 1, wherein carrying out described the one of two stages of magnetic separation in step (2)
Partial size is greater than 85% less than the accounting of 325 mesh in stages of magnetic separation concentrate.
6. method according to claim 1 or 5, which is characterized in that in step (2), the magnetic field of two stages of magnetic separation is strong
Degree is 0.3-0.7T.
7. the method according to claim 1, wherein in step (3), the dispersing agent be selected from sodium carbonate,
At least one of waterglass, calgon；
Optional, the inhibitor is selected from least one of pre-gelatinized starch, cornstarch, causticization starch；
Optional, the collecting agent is selected from least one of enuatrol, odium stearate, 9- hydroxyl sodium stearate.
8. method according to claim 1 or claim 7, which is characterized in that in step (3), based on 1 ton of carbonate containing choosing
Iron tailings, the additional amount of the dispersing agent are 1400-1600g, the additional amount 150-250g of the inhibitor, the collecting agent
Additional amount is 60-100g.
9. the method according to claim 1, wherein the pH regulator is selected from hydroxide in step (4)
At least one of sodium, sodium carbonate；
Optional, the activator is selected from least one of calcium oxide, calcium chloride.
10. according to claim 1 or method described in 9, which is characterized in that in step (4), be based on 1 ton of carbonate containing
Iron selection tailings, the additional amount of the pH regulator are 500-700g, and the additional amount of the inhibitor is 420-580g, the activation
The additional amount of agent is 800-1200g, and the additional amount of the collecting agent is 165-275g.
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| CN201810436656.6A CN110465404A (en) | 2018-05-09 | 2018-05-09 | The method for handling carbonate containing iron selection tailings |
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| CN201810436656.6A Pending CN110465404A (en) | 2018-05-09 | 2018-05-09 | The method for handling carbonate containing iron selection tailings |
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