CN208810295U - The system for handling Ultra-low-grade magnetite - Google Patents
The system for handling Ultra-low-grade magnetite Download PDFInfo
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- CN208810295U CN208810295U CN201821262144.4U CN201821262144U CN208810295U CN 208810295 U CN208810295 U CN 208810295U CN 201821262144 U CN201821262144 U CN 201821262144U CN 208810295 U CN208810295 U CN 208810295U
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Abstract
The utility model discloses a kind of system for handling Ultra-low-grade magnetite, which includes: wet mill unit, and wet mill unit has Ultra-low-grade magnetite entrance and slurry outlet；There is ore pulp entrance, the first collecting agent entrance, foaming agent entrance, iron concentrate outlet and the outlet of sulphur flotation tailing, the ore pulp entrance to be connected with the slurry outlet for iron concentrate flotation cells, iron concentrate flotation cells；There is sulphur flotation tailing entrance, regulator entrance, the second collecting agent entrance, inhibitor entrance, phosphorus concentrate outlet and the outlet of phosphorus flotation tailing, the sulphur flotation tailing entrance to be connected with sulphur flotation tailing outlet for phosphorus concentrate flotation cells, phosphorus concentrate flotation cells；There is phosphorus flotation tailing entrance, iron ore concentrate outlet and tailing outlet, the phosphorus flotation tailing entrance to be connected with phosphorus flotation tailing outlet for low intensity magnetic separation unit, low intensity magnetic separation unit.The system realizes the synthetical recovery of iron in Ultra-low-grade magnetite, sulphur, phosphorus valuable component, significantly improves the ore-dressing technique of existing Ultra-low-grade magnetite.
Description
Technical field
The utility model belongs to technical field of mineral processing, specifically, the utility model relates to handle Ultra-low-grade magnetite
System.
Background technique
China's iron resource natural endowment is poor, and from the point of view of the grade of iron ore, China's iron ore is based on lean ore.It is easy to sort processing
Magnetite ore, with the exploitation of many years, high grade ore is exploited totally, and the cutoff grade of development and utilization gradually reduces.
In this case, many iron ore deposits utilized that can not sort in the past are paid attention to, and super low-grade magnetite is it
In it is very typical a kind of.Super low-grade magnetite is mainly distributed on China, area, Chengde, is prominent domestic big mausoleum formula
The sub- mineral of one of vanadium titano-magnetite.Compared with general iron ore, every kind of valuable component content is significant low in the type ore
In the cutoff grade that current prior art can develop and use.Such general P of ore2O5Content is in 3wt% hereinafter, S content exists
0.5wt% or so, MFe (Armco magnetic iron) content is in 7wt% or so.In such ore, magnetic iron content is very low, individually picks up it
In iron mineral, economic benefit is not significant, but strictly according to the facts now valuable component comprehensive utilization, economic benefit can be greatly improved.
Currently, the comprehensive utilization of super low-grade vanadium titano-magnetite is also not on a large scale, iron is only recycled in most mines, a small number of right
Phosphorus, titanium resource are recycled, but first to select iron as top priority, then sort phosphorus, titanium etc., whole ore-dressing technique needs into one
Step is improved and is improved.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of system for handling Ultra-low-grade magnetite with a novel purpose.The system realize iron in Ultra-low-grade magnetite,
The synthetical recovery of sulphur, phosphorus valuable component significantly improves the ore-dressing technique of existing Ultra-low-grade magnetite.
In the one aspect of the utility model, the utility model proposes a kind of system for handling Ultra-low-grade magnetite, according to
The embodiments of the present invention, the system include:
Wet mill unit, the wet mill unit have Ultra-low-grade magnetite entrance and slurry outlet；
There is ore pulp entrance, the first collecting agent entrance, foaming agent to enter for iron concentrate flotation cells, the iron concentrate flotation cells
Mouth, iron concentrate outlet and the outlet of sulphur flotation tailing, the ore pulp entrance are connected with the slurry outlet；
There is sulphur flotation tailing entrance, regulator entrance, second to catch for phosphorus concentrate flotation cells, the phosphorus concentrate flotation cells
Receive agent entrance, inhibitor entrance, phosphorus concentrate outlet and the outlet of phosphorus flotation tailing, the sulphur flotation tailing entrance and the sulphur flotation
Tailing outlet is connected；
Low intensity magnetic separation unit, the low intensity magnetic separation unit has phosphorus flotation tailing entrance, iron ore concentrate outlet and tailing outlet, described
Phosphorus flotation tailing entrance is connected with phosphorus flotation tailing outlet.
According to the system of the processing Ultra-low-grade magnetite of the utility model embodiment, by the way that Ultra-low-grade magnetite is carried out iron concentrate
Flotation, can be obtained the iron concentrate that sulfur content is greater than 40%, and sulfur recovery rate is greater than 70%；By the way that sulphur flotation tailing is carried out phosphorus concentrate
Flotation, can be obtained the phosphorus concentrate that phosphorus pentoxide content is greater than 33%, and the rate of recovery of phosphorus pentoxide is greater than 80%；By by phosphorus
Flotation tailing carries out low intensity magnetic separation, can be obtained the iron ore concentrate that TFe content is greater than 65%, and the rate of recovery of MFe Armco magnetic iron is greater than 95%, and
Sulfur content is lower than 0.3% in iron ore concentrate, and phosphorus content is lower than 0.15%.Hereby it is achieved that iron, sulphur, phosphorus are valuable in Ultra-low-grade magnetite
The synthetical recovery of component significantly improves the ore-dressing technique of existing Ultra-low-grade magnetite.
In addition, can also be had according to the system of the processing Ultra-low-grade magnetite of the utility model above-described embodiment following additional
Technical characteristic:
Optional, the iron concentrate flotation cells include iron concentrate roughing device, iron concentrate scans device and iron concentrate is smart
Screening device.Be conducive to improve the product quality of iron concentrate as a result,.
Optional, the phosphorus concentrate flotation cells include phosphorus concentrate roughing device, phosphorus concentrate scans device and phosphorus concentrate is smart
Screening device.Be conducive to improve the product quality of phosphorus concentrate as a result,.
Optional, the low intensity magnetic separation unit includes iron ore concentrate roughing device, fine grinding device and iron ore concentrate selecting device.By
This, is conducive to the product quality for improving iron ore concentrate.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the system structure diagram according to the processing Ultra-low-grade magnetite of the utility model one embodiment；
Fig. 2 is to implement to handle ultra-poor magnetic according to the system using processing Ultra-low-grade magnetite of the utility model one embodiment
The method flow schematic diagram of iron ore.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the one aspect of the utility model, the utility model proposes a kind of system for handling Ultra-low-grade magnetite, according to
The embodiments of the present invention, with reference to Fig. 1, which includes: that wet mill unit 100, iron concentrate flotation cells 200, phosphorus concentrate are floating
Menu member 300 and low intensity magnetic separation unit 400.
Embodiment according to the present utility model, wet mill unit 100 have Ultra-low-grade magnetite entrance 101 and slurry outlet 102,
And be suitable for Ultra-low-grade magnetite carrying out wet ground, to obtain ore pulp.The partial size of the ore pulp Minerals can for less than
50% or more the accounting of 0.074mm, the mass concentration of ore pulp Minerals can be 30~40wt%.
There is ore pulp entrance 201, the first collecting agent to enter for embodiment according to the present utility model, iron concentrate flotation cells 200
Mouth 202, foaming agent entrance 203, iron concentrate outlet 204 and sulphur flotation tailing outlet 205, ore pulp entrance 201 and slurry outlet 102
It is connected, and is suitable for mixing ore pulp with the first collecting agent, foaming agent and carries out iron concentrate flotation, to obtain iron concentrate and sulphur flotation
Tailing.Specifically, at normal temperature, using the first collecting agent, foaming agent to pyrites such as pyrite, magnetic iron ore in ore pulp
Object carries out flotation, obtains the iron concentrate that sulfur content is greater than 40%, and in whole process, the rate of recovery of sulphur is greater than 70%, significant effect.
Inventors have found that the hydrophobicity on iron sulfide mineral surface can be enhanced in the first collecting agent, enhance its ability in conjunction with bubble, rises
Infusion help to be formed in ore pulp stablize, scale is suitable, the sufficient bubble of quantity, in the collaboration of the first collecting agent and foaming agent
Under effect, facilitate the flotation recovery of iron sulfide mineral.
One embodiment according to the present utility model, iron concentrate flotation cells may include iron concentrate roughing device, sulphur essence
Mine scans device and iron concentrate selecting device.Specifically, roughing operation obtains sulphur rough concentrate and sulphur rougher tailings, the medicament used
For the first collecting agent and foaming agent, the mass ratio of ore pulp and the first collecting agent, foaming agent can be 100000:1.9-1.1:1.1-
1.4；The sulphur rough concentrate that roughing operation obtains feeds selected operation, and medicament is not added in selected operation；The sulphur that roughing operation obtains is thick
It selects tailing to feed and scans operation, strengthen the collecting of iron sulfide mineral, the medicament used is the first collecting agent and foaming agent, sulphur roughing
The mass ratio of tailing and the first collecting agent, foaming agent can be 100000:1.1~0.9:0.9~1.1, and sulphur is obtained after scanning
Flotation tailing.Pyrite and magnetic iron ore accounting in iron concentrate are obtained after featured is greater than 75wt%, the oxidations such as quartz and silicic acid
Salt mineral accounting is less than 25wt%.A specific embodiment according to the present utility model, iron concentrate flotation may include primary thick
Choosing, once purging selection and triple cleaning.The iron concentrate that sulfur content is greater than 40% can be obtained as a result, sulfur recovery rate is greater than 70%.
The mass ratio of further embodiment according to the present utility model, ore pulp and the first collecting agent, foaming agent can be
100000:3~2:2~2.5.Inventors have found that the first collecting agent and too low time that can significantly reduce iron sulfide mineral of foaming agent
Yield, and the excessively high waste that will cause resource.
Another embodiment according to the present utility model, the first collecting agent can be butyl xanthate, isopropyl xanthate, isobutyl group
At least one of xanthate, amyl group xanthate.Inventors have found that the first collecting agent of the above-mentioned type can be close with iron sulfide mineral
In conjunction with realizing the strength collecting of iron sulfide mineral.
Another embodiment according to the present utility model, foaming agent can in 2# oil and methyl isobutyl carbinol at least
One of.As a result, the flotation of iron concentrate can be realized with the first collecting agent collective effect.
Embodiment according to the present utility model, phosphorus concentrate flotation cells 300 have sulphur flotation tailing entrance 301, regulator
Entrance 302, the second collecting agent entrance 303, inhibitor entrance 304, phosphorus concentrate outlet 305 and phosphorus flotation tailing outlet 306, sulphur is floating
It selects tailing entrance 301 to export 205 with sulphur flotation tailing to be connected, and is suitable for sulphur flotation tailing and regulator, the second collecting agent, suppression
Preparation mixing carries out phosphorus concentrate flotation, to obtain phosphorus concentrate and phosphorus flotation tailing.Specifically, at normal temperature, using regulator,
Second collecting agent and inhibitor recycle the Phosphate minerals such as apatite in sulphur flotation tailing, and it is big to obtain phosphorus pentoxide content
In 33% iron concentrate, whole process, the rate of recovery of phosphorus pentoxide is greater than 80%, significant effect.Inventors have found that sulphur is floating
It selects tailing to be sufficiently mixed with regulator, advantageously forms the surface characteristic of suitable Phosphate minerals flotation, under the action of inhibitor, into
The surface property differences that one step increases Phosphate minerals and other gangue minerals can strengthen Phosphate minerals under the action of the second collecting agent
Flotation, obtain comparatively ideal Phosphate minerals flotation effect.
One embodiment according to the present utility model, phosphorus concentrate flotation cells include that phosphorus concentrate roughing device, phosphorus concentrate are swept
Screening device and phosphorus concentrate selecting device.Specifically, sulphur flotation tailing obtains phosphorus rough concentrate and phosphorus rougher tailings after roughing operation,
The medicament used is regulator, the second collecting agent and inhibitor, and sulphur flotation tailing ore pulp and regulator, inhibit the second collecting agent
The mass ratio of agent can be 10000:1.2~1.8:1~1.2:1~1.2；The phosphorus rough concentrate that roughing operation obtains feeds selected work
The mass ratio of industry, selected operation addition inhibitor, phosphorus rough concentrate ore pulp and inhibitor is 10000:1~1.2；Roughing operation obtains
Phosphorus rougher tailings feed and scan operation, strengthen the collecting of Phosphate minerals, the medicament used is the second collecting agent, phosphorus rougher tailings mine
The mass ratio of slurry and the second collecting agent is 10000:0.5~0.6, and phosphorus flotation tailing is obtained after scanning, can get after featured
Apatite accounting is greater than 78.5%, the phosphorus concentrate of the oxidations such as calcite, quartz and silicate mineral accounting less than 21.5%.According to
One specific embodiment of the utility model, phosphorus concentrate flotation may include that one roughing, once purging selection and four times are selected.By
This, can be obtained the phosphorus concentrate that phosphorus pentoxide content is greater than 33%, and the rate of recovery of phosphorus pentoxide is greater than 80%.
Further embodiment according to the present utility model, sulphur flotation tailing and regulator, the matter of the second collecting agent, inhibitor
Measuring ratio can be 10000:1.2~1.8:1.5~1.8:2~2.4.Inventors have found that sulphur flotation tailing is caught with regulator, second
Receive agent, the mass ratio of inhibitor is not answered too high or too low, wherein regulator and when excessively high inhibitor, significantly affects the floating of Phosphate minerals
Performance is swum, the rate of recovery of Phosphate minerals is reduced, it is too low, sufficient adjustment effect can not be had to ore pulp, it is difficult to sufficiently expansion phosphorus ore
Difference of the object with surface nature between gangue mineral；The excessively high quality that can significantly reduce phosphorus concentrate of second collecting agent, it is too low also
The rate of recovery of Phosphate minerals is caused to decline.
Another embodiment according to the present utility model, regulator can be at least one of sodium carbonate, sodium bicarbonate.
Inventors have found that the advantage of above-mentioned regulator can effectively adjust slurry pH, and eliminate calcium ion excessive in ore pulp, magnesium from
The influence of son.
Another embodiment according to the present utility model, the second collecting agent can be oxidized paraffin wax soap class or oleic-acid collecting
At least one of agent.Inventors have found that above-mentioned second collecting agent can effective collecting Phosphate minerals.
Another embodiment according to the present utility model, inhibitor can for waterglass, in acidified sodium silicate at least it
One.Inventors have found that above-mentioned inhibitor has significant inhibiting effect to gangue minerals such as silicates under suitable amounts.
There is phosphorus flotation tailing entrance 401, iron ore concentrate to export for embodiment according to the present utility model, low intensity magnetic separation unit 400
402 and tailing outlet 403, phosphorus flotation tailing entrance 401 and phosphorus flotation tailing outlet 306 be connected, and suitable for by phosphorus flotation tailing
Low intensity magnetic separation is carried out, to obtain iron ore concentrate and tailing.Specifically, phosphorus flotation tailing is subjected to magnetic separation under the action of low-intensity magnetic field,
The magnetic iron ore in phosphorus flotation tailing is recycled, the iron ore concentrate that TFe content is greater than 65% can be obtained, the rate of recovery of MFe (Armco magnetic iron) is big
In 95%, and the sulfur content in gained iron ore concentrate, less than 0.3%, P content is less than 0.15%, with existing Ultra-low-grade magnetite dresser
Skill is compared, and has significant effect.
One embodiment according to the present utility model, low intensity magnetic separation unit 400 include iron ore concentrate roughing device 410, fine grinding dress
Set 420 and iron ore concentrate selecting device 430.It should be noted that iron ore concentrate roughing device and iron ore concentrate selecting device be not by spy
It does not limit, those skilled in the art can select according to actual needs, such as can be adverse current type, downstream-type, half inverse
Flow pattern magnetic separator.A specific embodiment according to the present utility model, low intensity magnetic separation may include one roughing, a fine grinding and one
It is secondary selected.It is carried out under the magnetic field strength of 219-159kA/m slightly specifically, first sending phosphorus flotation tailing to iron ore concentrate roughing device
Choosing obtains iron roughing mine and iron rougher tailings, then the iron roughing mine is sent to fine grinding device and carries out fine grinding, is finely ground to partial size and is less than
The accounting of 0.074mm is greater than 80%, then send the iron roughing mine after fine grinding to iron ore concentrate selecting device 76-116kA/m's
It carries out selected under magnetic field strength, obtains iron ore concentrate and iron cleaner tailings, wherein the sum of iron rougher tailings and iron cleaner tailings are
Above-mentioned tailing.The iron ore concentrate that TFe content is greater than 65% can be obtained as a result, the rate of recovery of MFe (Armco magnetic iron) is greater than 95%, and institute
The sulfur content in iron ore concentrate is obtained less than 0.3%, P content compared with existing Ultra-low-grade magnetite ore-dressing technique, has less than 0.15%
Significant effect.Inventors have found that the excessively high concentrate product iron that will cause of magnetic field strength contains in iron ore concentrate roughing and refining process
The reduction of amount is unfavorable for obtaining qualified concentrate product；Magnetic field strength is too low to will cause the ferro element rate of recovery in concentrate product
It reduces, is unfavorable for obtaining ideal metal recovery rate.
According to the system of the processing Ultra-low-grade magnetite of the utility model embodiment, by the way that Ultra-low-grade magnetite is carried out iron concentrate
Flotation, can be obtained the iron concentrate that sulfur content is greater than 40%, and sulfur recovery rate is greater than 70%；By the way that sulphur flotation tailing is carried out phosphorus concentrate
Flotation, can be obtained the phosphorus concentrate that phosphorus pentoxide content is greater than 33%, and the rate of recovery of phosphorus pentoxide is greater than 80%；By by phosphorus
Flotation tailing carries out low intensity magnetic separation, can be obtained the iron ore concentrate that TFe content is greater than 65%, and the rate of recovery of MFe Armco magnetic iron is greater than 95%, and
Sulfur content is lower than 0.3% in iron ore concentrate, and phosphorus content is lower than 0.15%.Hereby it is achieved that iron, sulphur, phosphorus are valuable in Ultra-low-grade magnetite
The synthetical recovery of component significantly improves the ore-dressing technique of existing Ultra-low-grade magnetite.
In order to facilitate understanding, implement the side of processing Ultra-low-grade magnetite to the system using above-mentioned processing Ultra-low-grade magnetite below
Method is described in detail, embodiment according to the present utility model, with reference to Fig. 2, this method comprises:
S100: Ultra-low-grade magnetite is subjected to wet ground
In the step, Ultra-low-grade magnetite is subjected to wet ground, to obtain ore pulp.The partial size of the ore pulp Minerals can be with
For 50% or more the accounting less than 0.074mm, the mass concentration of ore pulp Minerals can be 30~40wt%.
S200: ore pulp is mixed with the first collecting agent, foaming agent and carries out iron concentrate flotation
In the step, ore pulp is mixed with the first collecting agent, foaming agent and carries out iron concentrate flotation, so as to obtain iron concentrate and
Sulphur flotation tailing.Specifically, at normal temperature, using the first collecting agent, foaming agent to sulphur such as pyrite, magnetic iron ore in ore pulp
Change iron mineral and carry out flotation, obtain the iron concentrate that sulfur content is greater than 40%, in whole process, the rate of recovery of sulphur is greater than 70%, effect
Fruit is significant.Inventors have found that the hydrophobicity on iron sulfide mineral surface can be enhanced in the first collecting agent, enhance it in conjunction with bubble
Ability, foaming agent help to be formed in ore pulp stablize, scale is suitable, the sufficient bubble of quantity, in the first collecting agent and blistering
Under the synergistic effect of agent, facilitate the flotation recovery of iron sulfide mineral.
The mass ratio of one embodiment according to the present utility model, ore pulp and the first collecting agent, foaming agent can be
100000:3~2:2~2.5.Inventors have found that the first collecting agent and too low time that can significantly reduce iron sulfide mineral of foaming agent
Yield, and the excessively high waste that will cause resource.
Further embodiment according to the present utility model, the first collecting agent can be butyl xanthate, isopropyl xanthate, amyl
At least one of xanthate.Inventors have found that the first collecting agent of the above-mentioned type can combine closely with iron sulfide mineral, realize
The strength collecting of iron sulfide mineral.
Another embodiment according to the present utility model, foaming agent can in 2# oil and methyl isobutyl carbinol at least
One of.As a result, the flotation of iron concentrate can be realized with the first collecting agent collective effect.
Another embodiment according to the present utility model, iron concentrate flotation can successively include roughing, scan with it is selected.Specifically
, roughing operation obtains sulphur rough concentrate and sulphur rougher tailings, and the medicament used is the first collecting agent and foaming agent, ore pulp and first
Collecting agent, foaming agent mass ratio can be 100000:1.9-1.1:1.1-1.4；The sulphur rough concentrate that roughing operation obtains is fed
Medicament is not added in selected operation, selected operation；The sulphur rougher tailings that roughing operation obtains, which is fed, scans operation, strengthens pyrites
The collecting of object, the medicament used are the first collecting agent and foaming agent, the mass ratio of sulphur rougher tailings and the first collecting agent, foaming agent
It can be 100000:1.1~0.9:0.9~1.1, sulphur flotation tailing is obtained after scanning.It is obtained after featured yellow in iron concentrate
Iron ore and magnetic iron ore accounting are greater than 75wt%, and the oxidations such as quartz and silicate mineral accounting are less than 25wt%.It is practical according to this
A novel specific embodiment, iron concentrate flotation may include one roughing, once purging selection and triple cleaning.It can obtain as a result,
It is greater than 40% iron concentrate to sulfur content, sulfur recovery rate is greater than 70%.
S300: sulphur flotation tailing and regulator, the second collecting agent, inhibitor mixed are subjected to phosphorus concentrate flotation
In the step, sulphur flotation tailing and regulator, the second collecting agent, inhibitor mixed are subjected to phosphorus concentrate flotation, with
Just phosphorus concentrate and phosphorus flotation tailing are obtained.Specifically, at normal temperature, it is floating to sulphur using regulator, the second collecting agent and inhibitor
It selects the Phosphate minerals such as the apatite in tailing to be recycled, obtains the phosphorus concentrate that phosphorus pentoxide content is greater than 33%, whole process
In, the rate of recovery of phosphorus pentoxide is greater than 80%, significant effect.Inventors have found that sulphur flotation tailing is sufficiently mixed with regulator,
The surface characteristic for advantageously forming suitable Phosphate minerals flotation further increases Phosphate minerals and other arteries and veins under the action of inhibitor
The surface property differences of stone ore object can strengthen the flotation of Phosphate minerals under the action of the second collecting agent, obtain comparatively ideal phosphorus ore
Object flotation effect.
One embodiment according to the present utility model, sulphur flotation tailing and regulator, the quality of the second collecting agent, inhibitor
Than that can be 10000:1.2~1.8:1.5~1.8:2~2.4.Inventors have found that sulphur flotation tailing and regulator, the second collecting
Agent, inhibitor mass ratio do not answer too high or too low, wherein regulator and when excessively high inhibitor, significantly affects swimming for Phosphate minerals
Performance reduces the rate of recovery of Phosphate minerals, too low, and sufficient adjustment effect can not be had to ore pulp, it is difficult to sufficiently expansion Phosphate minerals
With the difference of surface nature between gangue mineral；The excessively high quality that can significantly reduce phosphorus concentrate of second collecting agent, it is too low also to make
Decline at the rate of recovery of Phosphate minerals.
Further embodiment according to the present utility model, regulator can be at least one of sodium carbonate, sodium bicarbonate.
Inventors have found that above-mentioned regulator can effectively adjust slurry pH, and eliminate calcium ion excessive in ore pulp, magnesium ion
It influences.
Another embodiment according to the present utility model, the second collecting agent can be oxidized paraffin wax soap class or oleic-acid collecting
At least one of agent.Inventors have found that above-mentioned second collecting agent can effective collecting Phosphate minerals.
Another embodiment according to the present utility model, inhibitor can for waterglass, in acidified sodium silicate at least it
One.Inventors have found that above-mentioned inhibitor has significant inhibiting effect to gangue minerals such as silicates under suitable amounts.
Another embodiment according to the present utility model, phosphorus concentrate flotation can successively include roughing, scan with it is selected.Specifically
, sulphur flotation tailing obtains phosphorus rough concentrate and phosphorus rougher tailings after roughing operation, and the medicament used is regulator, the second collecting
Agent and inhibitor, sulphur flotation tailing ore pulp and regulator, the second collecting agent, inhibitor mass ratio can for 10000:1.2~
1.8:1~1.2:1~1.2；The phosphorus rough concentrate that roughing operation obtains feeds selected operation, and inhibitor is added in selected operation, and phosphorus is thick
The mass ratio of concentrate pulp and inhibitor is 10000:1~1.2；The phosphorus rougher tailings that roughing operation obtains, which is fed, scans operation,
Strengthen the collecting of Phosphate minerals, the medicament used is the second collecting agent, and phosphorus rougher tailings ore pulp and the mass ratio of the second collecting agent are
10000:0.5~0.6 obtains phosphorus flotation tailing after scanning, and available apatite accounting is greater than 78.5%, Fang Xie after featured
The phosphorus concentrate of the oxidations such as stone, quartz and silicate mineral accounting less than 21.5%.A specific implementation according to the present utility model
Example, phosphorus concentrate flotation may include that one roughing, once purging selection and four times are selected.It is big that phosphorus pentoxide content can be obtained as a result,
It is greater than 80% in the rate of recovery of 33% phosphorus concentrate, phosphorus pentoxide.
S400: phosphorus flotation tailing is subjected to low intensity magnetic separation
In the step, phosphorus flotation tailing is subjected to low intensity magnetic separation, to obtain iron ore concentrate and tailing.Specifically, by phosphorus flotation
Tailing carries out magnetic separation under the action of low-intensity magnetic field, recycles the magnetic iron ore in phosphorus flotation tailing, and TFe content can be obtained and be greater than 65%
The rate of recovery of iron ore concentrate, MFe (Armco magnetic iron) is greater than 95%, and the sulfur content in gained iron ore concentrate, less than 0.3%, P content is less than
0.15%, compared with existing Ultra-low-grade magnetite ore-dressing technique, there is significant effect.
One embodiment according to the present utility model, low intensity magnetic separation may include roughing, fine grinding and selected.It is practical new according to this
One specific embodiment of type, low intensity magnetic separation may include one roughing, a fine grinding and primary cleaning.Specifically, first phosphorus is floated
It selects tailing to carry out roughing under the magnetic field strength of 219-159kA/m, obtains iron roughing mine and iron rougher tailings, then by the iron roughing
Mine carries out fine grinding, is finely ground to accounting of the partial size less than 0.074mm and is greater than 80%, then by the iron roughing mine after fine grinding in 76-
It carries out selected under the magnetic field strength of 116kA/m, obtains iron ore concentrate and iron cleaner tailings, wherein iron rougher tailings and the selected tail of iron
The sum of mine is above-mentioned tailing.The iron ore concentrate that TFe content is greater than 65% can be obtained as a result, the rate of recovery of MFe (Armco magnetic iron) is greater than
95%, and the sulfur content in gained iron ore concentrate, less than 0.3%, P content is less than 0.15%, with existing Ultra-low-grade magnetite ore-dressing technique
It compares, there is significant effect.Inventors have found that magnetic field strength is excessively high to will cause essence in iron ore concentrate roughing and refining process
The reduction of mineral products iron content is unfavorable for obtaining qualified concentrate product；Magnetic field strength is too low to will cause iron member in concentrate product
The reduction of the plain rate of recovery is unfavorable for obtaining ideal metal recovery rate.
According to the method for the processing Ultra-low-grade magnetite of the utility model embodiment, by the way that Ultra-low-grade magnetite is carried out iron concentrate
Flotation, can be obtained the iron concentrate that sulfur content is greater than 40%, and sulfur recovery rate is greater than 70%；By the way that sulphur flotation tailing is carried out phosphorus concentrate
Flotation, can be obtained the phosphorus concentrate that phosphorus pentoxide content is greater than 33%, and the rate of recovery of phosphorus pentoxide is greater than 80%；By by phosphorus
Flotation tailing carries out low intensity magnetic separation, can be obtained the iron ore concentrate that TFe content is greater than 65%, and the rate of recovery of MFe Armco magnetic iron is greater than 95%, and
Sulfur content is lower than 0.3% in iron ore concentrate, and phosphorus content is lower than 0.15%.Hereby it is achieved that iron, sulphur, phosphorus are valuable in Ultra-low-grade magnetite
The synthetical recovery of component significantly improves the ore-dressing technique of existing Ultra-low-grade magnetite.
Below with reference to specific embodiment, the utility model is described, it should be noted that these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment
The chemical composition analysis of Ultra-low-grade magnetite is as shown in table 1.
A kind of chemical composition analysis of the Ultra-low-grade magnetite of table 1
| Chemical component | TFe | mFe | Ti | P2O5 | S | Na2O |
| Content % | 15.87 | 6.46 | 1.51 | 2.17 | 0.40 | 1.73 |
| Chemical component | Al2O3 | CaO | MgO | SiO2 | K2O | |
| Content % | 10.99 | 13.29 | 10.03 | 34.5 | 1.08 |
Above-mentioned Ultra-low-grade magnetite is subjected to wet ground, the partial size for obtaining ore pulp Minerals is less than the accounting of 0.074mm
50%-55%, mass concentration be 30%~40% ore pulp, then at normal temperature, using amyl group xanthate as the first collecting agent,
2# oil carries out flotation to iron sulfide minerals such as pyrite, magnetic iron ore in ore pulp as foaming agent, specifically, in which: roughing
Operation obtains sulphur rough concentrate and rougher tailings, and the medicament used is the first collecting agent and foaming agent, roughing pulp and penta xanthate, 2#
The mass ratio of oil can be respectively 100000:1.5,100000:1.5；The sulphur rough concentrate that roughing operation obtains feeds selected work
Medicament is not added in industry, selected operation, and selected one tailing return feeds roughing operation, and selected one concentrate feeds selected two, essence
It selecting two tailing to return and feeds selected one, selected two concentrate feeds selected three, and the concentrate of essence three is iron concentrate, selected three
Tailing return feeds selected two；The rougher tailings that roughing operation obtains, which is fed, scans operation, strengthens the collecting of iron sulfide mineral, makes
Medicament is penta xanthate and 2# oil, scan ore pulp and penta xanthate and 2# oil mass ratio can be respectively 100000:0.5,
100000:0.5, it is featured and scan, respectively obtain iron concentrate and sulphur flotation tailing that sulfur content is 43.1wt%, whole process
In, the rate of recovery of sulphur is 75%；Then at normal temperature, using sodium carbonate as regulator, enuatrol as the second collecting agent, water
Glass recycles the Phosphate minerals such as apatite in sulphur flotation tailing as inhibitor, specifically, to obtain phosphorus thick for roughing operation
Concentrate and rougher tailings, the medicament used are sodium carbonate, enuatrol and waterglass, roughing pulp and sodium carbonate, enuatrol and water
The mass ratio of glass is respectively 10000:1.5,10000:1.1,10000:1；The phosphorus rough concentrate that roughing operation obtains feeds selected
Operation selected operation totally four times, adds inhibitor respectively, wherein selected one tailing, which returns, feeds roughing operation, selected one
Concentrate feeds selected two, and selected two tailing return feeds selected one, and selected two concentrate feeds selected three, and the concentrate of essence three is given
Enter selected four, the tailing of selected operation successively feeds last selected operation, the mass ratio of selected operation ore pulp and inhibitor by
Selected one to selected four is followed successively by 10000:0.37,10000:0.25,10000:0.25,10000:0.13；Roughing operation obtains
Phosphorus rougher tailings feed once purging selection operation, strengthen the collecting of Phosphate minerals, the medicament used be enuatrol, scan ore pulp and oil
The mass ratio of sour sodium is 10000:0.5, featured and after scanning, and respectively obtains the phosphorus that phosphorus pentoxide content is 34.65wt%
Concentrate and phosphorus flotation tailing, in whole process, the rate of recovery of phosphorus pentoxide is 85.38%；Finally by above-mentioned phosphorus flotation tailing
Roughing is carried out under the magnetic field strength of 219-159kA/m, obtains iron roughing mine and iron rougher tailings, then the iron roughing mine is carried out
Fine grinding is finely ground to the accounting 80% that partial size is less than 0.074mm, then by the iron roughing mine after fine grinding in the magnetic field of 76-116kA/m
It carries out selected under intensity, obtains iron ore concentrate and iron cleaner tailings, wherein the sum of iron rougher tailings and iron cleaner tailings are as above-mentioned
Tailing.The iron ore concentrate that TFe content is 65.58wt% can be obtained as a result, the rate of recovery of MFe (Armco magnetic iron) is 95.55%, and institute
The sulfur content obtained in iron ore concentrate is 0.2wt%, P content 0.084wt%, compared with existing Ultra-low-grade magnetite ore-dressing technique, tool
There is significant effect.
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 contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (4)
1. a kind of system for handling Ultra-low-grade magnetite characterized by comprising
Wet mill unit, the wet mill unit have Ultra-low-grade magnetite entrance and slurry outlet；
Iron concentrate flotation cells, the iron concentrate flotation cells have ore pulp entrance, the first collecting agent entrance, foaming agent entrance,
Iron concentrate outlet and the outlet of sulphur flotation tailing, the ore pulp entrance are connected with the slurry outlet；
Phosphorus concentrate flotation cells, the phosphorus concentrate flotation cells have sulphur flotation tailing entrance, regulator entrance, the second collecting agent
Entrance, inhibitor entrance, phosphorus concentrate outlet and the outlet of phosphorus flotation tailing, the sulphur flotation tailing entrance and the sulphur flotation tailing
Outlet is connected；
Low intensity magnetic separation unit, the low intensity magnetic separation unit have phosphorus flotation tailing entrance, iron ore concentrate outlet and tailing outlet, the phosphorus floating
It selects tailing entrance to export with the phosphorus flotation tailing to be connected.
2. system according to claim 1, which is characterized in that the iron concentrate flotation cells include iron concentrate roughing dress
It sets, iron concentrate scans device and iron concentrate selecting device.
3. system according to claim 1 or 2, which is characterized in that the phosphorus concentrate flotation cells include phosphorus concentrate roughing
Device, phosphorus concentrate scan device and phosphorus concentrate selecting device.
4. system according to claim 3, which is characterized in that the low intensity magnetic separation unit includes iron ore concentrate roughing device, thin
Mill apparatus and iron ore concentrate selecting device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
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