CN109647613A - A kind of raising delafossite recycling flotation technology - Google Patents
A kind of raising delafossite recycling flotation technology Download PDFInfo
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- CN109647613A CN109647613A CN201811622889.1A CN201811622889A CN109647613A CN 109647613 A CN109647613 A CN 109647613A CN 201811622889 A CN201811622889 A CN 201811622889A CN 109647613 A CN109647613 A CN 109647613A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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Abstract
The present invention relates to technical field of mineral processing, flotation technology is recycled more particularly to a kind of raising delafossite, break process is carried out to copper iron ore with breaking machine first, and the broken delafossite that average particle size is less than 12mm is screened by screening machine, then crude separation and subdivision grade are carried out to the delafossite after ball milling by way of combining the gravity classification of cyclone with the pressure grading of high frequency shale shaker, separating treatment is finally carried out to flotation pulp using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur, finally obtain the iron ore concentrate of copper concentrate of the copper grade greater than 18% and Iron grade greater than 62%, process of the invention can be easy to appear valuable mineral " owing mill " to avoid delafossite in ball milling, the phenomenon that gangue mineral " overground ", both influence of the gangue mineral thin mud to flotation recovery rate had been reduced, have again The recovery efficiency of the raising target minreal of effect, realizes the two-win of economic benefit and social benefit.
Description
Technical field
The present invention relates to technical field of mineral processing, in particular to a kind of raising delafossite recycles flotation technology.
Background technique
Copper and iron all play very important effect in national economy, and the nonferrous metals ore containing copper and iron simultaneously
Object is one of main source of both metals.Delafossite mineral composition is complicated, mainly originates in cupriferous pyrite bed, minority is in silicon
In card rock copper deposit.Wherein, the major metal mineral of cupriferous pyrite bed include chalcopyrite, magnetic iron ore, pyrite, magnetic Huang iron
The carbonate minerals such as mine, marcasite, covellite, vitreous copper and chlorite, dolomite；The major metal mineral of skarn deposit
Including gangue minerals such as diopside, garnet, serpentines.Therefore, a large amount of pyrite is often contained in Copper-iron Deposit.Copper and iron
The characteristics of mine, shows themselves in that the symbiosis such as copper mineral and magnetic iron ore, pyrite are complicated, and the granularity thickness of various mineral is uneven, arteries and veins
Stone is distributed in copper mineral in various degree, and the hardness of gangue mineral is low, easy crushing.
Traditional delafossite ore-dressing technique is classified first with ball mill and grader or cyclone, is reached after classification
It is required that ore pulp then use " first float after magnetic " or " floating after first magnetic " (flotation after i.e. first Floatation of Copper sulphur, rear magnetic separation iron or first magnetic separation iron
Copper sulphur) technique carry out separation and recovery target minreal.Since the ratio of target minreal in copper iron ore is great, hardness is high, gangue mine
The specific gravity of object is small, hardness is low, is often gangue overground formation secondary slime in grinding process, and target minreal is unbroken
Completely, when carrying out thickness separation using gravitational difference using cyclone or grader, the gangue mineral of " overground " due to light-weight and
It is mixed into flotation pulp, and the target minreal of " owing mill " is taken as tailing object to separate since weight is larger, to influence
The rate of recovery of target minreal reduces the utilization rate of copper and iron ore resources and the comprehensive benefit in mine.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention proposes a kind of raising delafossites to recycle flotation technology, should
The phenomenon that technology can be easy to appear to avoid delafossite in ball milling valuable mineral " owing mill ", gangue mineral " overground ", effectively
The flotability of copper, sulphur, iron ore concentrate in flotation pulp is increased, the recovery efficiency of target minreal is improved.
To achieve the goals above, the technical scheme adopted by the invention is that:
The invention proposes a kind of raising delafossites to recycle flotation technology, comprising the following steps:
S1. break process is carried out to copper iron ore with breaking machine, and average particle size is screened less than 12mm's by screening machine
Broken delafossite；
S2. by the broken copper and iron mining belt conveyer in S1 step with certain conveying speed be transported in ball mill into
Row grinding treatment, when ball milling, add a certain amount of water, make the mass concentration 80% of the ore grinding after grinding treatment, and make this
Fineness is that the content of -74 μm of grades accounts for 25%-30% in ore grinding；
S3. ore grinding obtained in S2 step is transferred in cyclone, the matter of overflow pulp is made after the effect of cyclone
Amount concentration is 34%-40%, and the mass concentration of sand setting ore pulp is 80%-84%, and guarantees that fineness is -74 μm in overflow pulp
The content of grade accounts for 40%-50%；
S4. overflow pulp obtained in S3 step is screened using the sieve in the aperture 0.1mm in high frequency shale shaker,
Make the mass concentration 55%-65% for sieving upper ore pulp after screening, and sieving fineness in upper ore pulp is that the content of -74 μm of grades accounts for
20%-25%, the mass concentration for sieving lower ore pulp is 33%-36%, and sieving fineness in lower ore pulp is that the content of -74 μm of grades accounts for
75%-80%；
S5. ore pulp on the sand setting ore pulp in S3 step and the sieve in S4 step is returned in the ball mill in S2 step,
And grinding treatment is carried out according to method in S2 step；
S6. ore pulp under the sieve in S4 step is separated using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Processing:
The mixed floating technique of Z1, copper sulphur: first that mass concentration is 100g/t is separately added into ore pulp under the sieve in S4 step
Sludge dispersing agent, the second sludge dispersing agent that mass concentration is 400g/t, mass concentration are the activator of 100-130g/t, quality
Concentration is the collecting agent of 80-150g/t, respectively obtained after mixed floating copper content be 1.8%-2.5%, sulfur content 30%-38%
Copper-sulfide mixed concentrate and mixed floating tailing；
Z2, copper-sulfur separating process: the suppression that mass concentration is 2-2.5kg/t is added into the copper-sulfide mixed concentrate in Z1 step
Preparation respectively obtains the iron concentrate of copper concentrate of the copper grade greater than 18% and sulfur grade greater than 38% after mixed float；
Z3, the mixed floating tailing in Z1 step is transferred to the smart magnetic separation processing of progress one thick one in magnetic separator, i.e., first uses magnetic
It selects machine to carry out magnetic roughing under conditions of magnetic field strength is 180mT, obtains crude iron mine, in magnetic field strength be again then 160mT
Under the conditions of to crude iron mine carry out magnetic it is selected, obtain Iron grade be greater than 62% iron ore concentrate.
Preferably, the maximum particle size of broken delafossite described in S1 step is less than 18mm.
Preferably, conveying speed described in S2 step is 100t/h.
Preferably, the revolving speed of ball mill described in S2 step is 17-19.2r/min, and sand return ratio is 250%-280%.
Preferably, sieve described in S4 step is the sieve of polyurethane material.
Preferably, the vibration frequency of high frequency shale shaker described in S4 step is 1500Hz, and amplitude is less than 2mm.
Preferably, the first sludge dispersing agent described in Z1 step and the second sludge dispersing agent are respectively that ammonium sulfate and six are inclined
Sodium phosphate.
Preferably, activator described in Z1 step is copper sulphate.
Preferably, collecting agent described in Z1 step is amyl group xanthate.
Preferably, inhibitor described in Z2 step is lime.
Compared with prior art, the beneficial effects of the present invention are:
Process of the invention is obtained with breaking machine and screening machine first when carrying out the recovery processing of copper iron ore
Average particle size is less than the broken delafossite of 12mm, then in succession by ball mill, cyclone and high frequency shale shaker to the matter of ore pulp
Amount concentration and accounting of -74 μm of grades in ore pulp screened, and is finally 33%-36% with mass concentration, -74 μm of grades
Content accounts for ore pulp under the sieve of 75%-80% and carries out FLOTATION SEPARATION, can be under conditions of the mass concentration and -74 μm of grade accountings
The flotability of copper, sulphur, iron ore concentrate in flotation pulp is effectively increased, to improve the recovery efficiency of target minreal, realizes warp
The two-win for the benefit and social benefit of helping；Meanwhile the inadequate sediment by rotational flow ore pulp of ore grinding degree and the upper ore pulp of sieve are returned into ball in succession
Screening is re-started in mill, eddy flow and high-frequency vibration step, is conducive to grasp the degree of ball milling by multiple ball milling and screening, keeps away
Exempt from delafossite to be easy to appear in ball milling valuable mineral " owe mill ", the phenomenon that gangue mineral " overground ", to reduce gangue mineral
Accounting in flotation pulp reduces influence of the gangue mineral thin mud to flotation recovery rate, to improve copper and iron ore resources
Utilization rate and the comprehensive benefit in mine.
Specific embodiment
Specific embodiments of the present invention will be further explained below.It should be noted that for these implementations
The explanation of mode is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, invention described below
Technical characteristic involved in each embodiment can be combined with each other as long as they do not conflict with each other.
Embodiment 1:
For the copper iron ore for selecting Jiangxi dressing plant, the mineral intergrowth relationship of the copper iron ore is complicated, hardness of mineral
Variation is big, head grade are as follows: copper 0.623%, sulphur 10.53%, Armco magnetic iron 12.44%.Using process pair of the invention
Copper therein, sulphur, iron ore concentrate are recycled, specific recovery method the following steps are included:
S1. break process is carried out to copper iron ore with breaking machine, and screening average particle size by screening machine is 11.3mm's
Broken delafossite；
S2. the broken copper and iron mining belt conveyer in S1 step is transported to ball mill with the conveying speed of 100t/h
It in (model MQG3660), and is 17r/min in revolving speed, sand return is than grinding these ore pulps under the Parameter Conditions for 250%
Broken processing, when ball milling, add a certain amount of water, make the mass concentration 80% of the ore grinding after grinding treatment, and make the ore grinding
Middle fineness is that the content of -74 μm of grades accounts for 25%；
S3. ore grinding obtained in S2 step is transferred in cyclone (model FX660), is made after the effect of cyclone
The mass concentration of overflow pulp is 34%, and fineness is that the content of -74 μm of grades accounts for 40% in overflow pulp, and cyclone is heavy
The mass concentration of placer slurry is 80%；
S4. it is in vibration frequency by high frequency shale shaker (2SG48-60W-5STK type DerRick high frequency shale shaker)
Using the polyurethane screen in the aperture 0.1mm to overflow mine obtained in S3 step under 1500Hz, the Parameter Conditions that amplitude is 1.5mm
Slurry is screened, and the mass concentration of ore pulp is 55% on sieve, and sieving fineness in upper ore pulp is that the content of -74 μm of grades accounts for
20%, the mass concentration for sieving lower ore pulp is 33%, and sieving fineness in lower ore pulp is that the content of -74 μm of grades accounts for 75%；
S5. ore pulp on the sand setting ore pulp in S3 step and the sieve in S4 step is returned in the ball mill in S2 step,
And grinding treatment is carried out according to method in S2 step；
S6. ore pulp under the sieve in S4 step is separated using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Processing:
The mixed floating technique of Z1, copper sulphur: first that mass concentration is 100g/t is separately added into ore pulp under the sieve in S4 step
Sludge dispersing agent (ammonium sulfate), the second sludge dispersing agent (calgon) that mass concentration is 400g/t, mass concentration are
The activator (copper sulphate) of 100g/t, the collecting agent (amyl group xanthate) that mass concentration is 80g/t, respectively obtain cupric after mixed float
The copper-sulfide mixed concentrate and mixed floating tailing that amount is 2.28%, sulfur content is 36.28%；
Z2, copper-sulfur separating process: the inhibitor that mass concentration is 2kg/t is added into the copper-sulfide mixed concentrate in Z1 step
(lime) respectively obtains the copper concentrate that copper grade is 18.5% and the iron concentrate that sulfur grade is 38.4% after mixed float；
Z3, the mixed floating tailing in Z1 step is transferred to the smart magnetic separation processing of progress one thick one in magnetic separator, i.e., first uses type
Number magnetic separator for being CTB1230 carries out magnetic roughing under conditions of magnetic field strength is 180mT, obtains crude iron mine, then uses again
The magnetic separator of model JCTB1230 is selected to crude iron mine progress magnetic under conditions of magnetic field strength is 160mT, and obtaining Iron grade is
62.8% iron ore concentrate.
Embodiment 2:
For the copper iron ore for selecting Jiangxi dressing plant, the mineral intergrowth relationship of the copper iron ore is complicated, hardness of mineral
Variation is big, head grade are as follows: copper 0.623%, sulphur 10.53%, Armco magnetic iron 12.44%.Using process pair of the invention
Copper therein, sulphur, iron ore concentrate are recycled, specific recovery method the following steps are included:
S1. break process is carried out to copper iron ore with breaking machine, and screening average particle size by screening machine is 11.5mm's
Broken delafossite；
S2. the broken copper and iron mining belt conveyer in S1 step is transported to ball mill with the conveying speed of 100t/h
It in (model MQG3660), and is 18.5r/min in revolving speed, sand return is than carrying out these ore pulps under the Parameter Conditions for 260%
Grinding treatment, when ball milling, add a certain amount of water, make the mass concentration 80% of the ore grinding after grinding treatment, and make the mill
Fineness is that the content of -74 μm of grades accounts for 28% in mine；
S3. ore grinding obtained in S2 step is transferred in cyclone (model FX660), is made after the effect of cyclone
The mass concentration of overflow pulp is 37%, and fineness is that the content of -74 μm of grades accounts for 45% in overflow pulp, and cyclone is heavy
The mass concentration of placer slurry is 82%；
S4. it is in vibration frequency by high frequency shale shaker (2SG48-60W-5STK type DerRick high frequency shale shaker)
Using the polyurethane screen in the aperture 0.1mm to overflow mine obtained in S3 step under 1500Hz, the Parameter Conditions that amplitude is 1.7mm
Slurry is screened, and the mass concentration of ore pulp is 60% on sieve, and sieving fineness in upper ore pulp is that the content of -74 μm of grades accounts for
22.5%, the mass concentration for sieving lower ore pulp is 34.5%, and sieving fineness in lower ore pulp is that the content of -74 μm of grades accounts for 78%；
S5. ore pulp on the sand setting ore pulp in S3 step and the sieve in S4 step is returned in the ball mill in S2 step,
And grinding treatment is carried out according to method in S2 step；
S6. ore pulp under the sieve in S4 step is separated using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Processing:
The mixed floating technique of Z1, copper sulphur: first that mass concentration is 100g/t is separately added into ore pulp under the sieve in S4 step
Sludge dispersing agent (ammonium sulfate), the second sludge dispersing agent (calgon) that mass concentration is 400g/t, mass concentration are
The activator (copper sulphate) of 115g/t, the collecting agent (amyl group xanthate) that mass concentration is 120g/t, respectively obtain after mixed float and contain
The copper-sulfide mixed concentrate and mixed floating tailing that amount of copper is 2.33%, sulfur content is 36.26%；
Z2, copper-sulfur separating process: the suppression that mass concentration is 2.25kg/t is added into the copper-sulfide mixed concentrate in Z1 step
Preparation (lime) respectively obtains the copper concentrate that copper grade is 18.9% and the iron concentrate that sulfur grade is 38.5% after mixed float；
Z3, the mixed floating tailing in Z1 step is transferred to the smart magnetic separation processing of progress one thick one in magnetic separator, i.e., first uses type
Number magnetic separator for being CTB1230 carries out magnetic roughing under conditions of magnetic field strength is 180mT, obtains crude iron mine, then uses again
The magnetic separator of model JCTB1230 is selected to crude iron mine progress magnetic under conditions of magnetic field strength is 160mT, and obtaining Iron grade is
63.15% iron ore concentrate.
Embodiment 3:
For the copper iron ore for selecting Jiangxi dressing plant, the mineral intergrowth relationship of the copper iron ore is complicated, hardness of mineral
Variation is big, head grade are as follows: copper 0.623%, sulphur 10.53%, Armco magnetic iron 12.44%.Using process pair of the invention
Copper therein, sulphur, iron ore concentrate are recycled, specific recovery method the following steps are included:
S1. break process is carried out to copper iron ore with breaking machine, and screening average particle size by screening machine is 11.8mm's
Broken delafossite；
S2. the broken copper and iron mining belt conveyer in S1 step is transported to ball mill with the conveying speed of 100t/h
It in (model MQG3660), and is 19.2r/min in revolving speed, sand return is than carrying out these ore pulps under the Parameter Conditions for 280%
Grinding treatment, when ball milling, add a certain amount of water, make the mass concentration 80% of the ore grinding after grinding treatment, and make the mill
Fineness is that the content of -74 μm of grades accounts for 30% in mine；
S3. ore grinding obtained in S2 step is transferred in cyclone (model FX660), is made after the effect of cyclone
The mass concentration of overflow pulp is 40%, and fineness is that the content of -74 μm of grades accounts for 50% in overflow pulp, and cyclone is heavy
The mass concentration of placer slurry is 84%；
S4. it is in vibration frequency by high frequency shale shaker (2SG48-60W-5STK type DerRick high frequency shale shaker)
Using the polyurethane screen in the aperture 0.1mm to overflow mine obtained in S3 step under 1500Hz, the Parameter Conditions that amplitude is 1.9mm
Slurry is screened, and the mass concentration of ore pulp is 65% on sieve, and sieving fineness in upper ore pulp is that the content of -74 μm of grades accounts for
25%, the mass concentration for sieving lower ore pulp is 36%, and sieving fineness in lower ore pulp is that the content of -74 μm of grades accounts for 80%；
S5. ore pulp on the sand setting ore pulp in S3 step and the sieve in S4 step is returned in the ball mill in S2 step,
And grinding treatment is carried out according to method in S2 step；
S6. ore pulp under the sieve in S4 step is separated using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Processing:
The mixed floating technique of Z1, copper sulphur: first that mass concentration is 100g/t is separately added into ore pulp under the sieve in S4 step
Sludge dispersing agent (ammonium sulfate), the second sludge dispersing agent (calgon) that mass concentration is 400g/t, mass concentration are
The activator (copper sulphate) of 130g/t, the collecting agent (amyl group xanthate) that mass concentration is 150g/t, respectively obtain after mixed float and contain
The copper-sulfide mixed concentrate and mixed floating tailing that amount of copper is 2.41%, sulfur content is 37.03%；
Z2, copper-sulfur separating process: the inhibition that mass concentration is 2.5kg/t is added into the copper-sulfide mixed concentrate in Z1 step
Agent (lime) respectively obtains the copper concentrate that copper grade is 18.75% and the iron concentrate that sulfur grade is 38.67% after mixed float；
Z3, the mixed floating tailing in Z1 step is transferred to the smart magnetic separation processing of progress one thick one in magnetic separator, i.e., first uses type
Number magnetic separator for being CTB1230 carries out magnetic roughing under conditions of magnetic field strength is 180mT, obtains crude iron mine, then uses again
The magnetic separator of model JCTB1230 is selected to crude iron mine progress magnetic under conditions of magnetic field strength is 160mT, and obtaining Iron grade is
63.33% iron ore concentrate.
Comparative example:
For comparative example equally selects the copper iron ore in Jiangxi dressing plant, the mineral intergrowth relationship of the copper iron ore is multiple
Miscellaneous, hardness of mineral changes greatly, head grade are as follows: copper 0.623%, sulphur 10.53%, Armco magnetic iron 12.44%.Using traditional work
Process recycles copper therein, sulphur, iron ore concentrate, specific recovery method the following steps are included:
It S1. will with the conveying speed of 80t/h by belt conveyer after carrying out simple crushing to copper iron ore with breaking machine
It is transported in ball mill (model MQG3660), and is 15r/min in revolving speed, and sand return is more right than under the Parameter Conditions for 240%
These ore pulps carry out grinding treatment；
S2. the ore grinding ground in S2 step is transferred in cyclone (model FX660), cyclone overflow pulp
Mass concentration be 45%, and in overflow pulp fineness be -74 μm of grades content account for 75%, hydrocyclone sand ore pulp
Mass concentration is 80%；
S3. the overflow pulp in S2 step is separated using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Processing:
The mixed floating technique of Z1, copper sulphur: the sulfuric acid that mass concentration is 120g/t is separately added into the overflow pulp in S2 step
For copper as copper sulphur activator, the 130g/t amyl group xanthate that mass concentration is respectively obtains copper content after mixed float as collecting agent
The copper-sulfide mixed concentrate and mixed floating tailing for being 33.48% for 2.03%, sulfur content；
Z2, copper-sulfur separating process: the inhibition that mass concentration is 3.2kg/t is added into the copper-sulfide mixed concentrate in Z1 step
Agent (lime) respectively obtains the copper concentrate that copper grade is 15.5% and the iron concentrate that sulfur grade is 34.3% after mixed float；
Z3, it the mixed floating tailing in Z1 step is transferred in the magnetic separator of model CTB1230 carries out magnetic separation, pass through
The iron ore concentrate that Iron grade is 61.51% is obtained after the magnetic field strength processing of 2000mT.
The copper of 1-3 and comparative example it is found that compared with traditional delafossite ore-dressing technique, in the present invention through the foregoing embodiment
Copper in delafossite, sulphur, the iron ore concentrate rate of recovery can be improved in iron ore beneficiation technique, reinforces the comprehensive utilization ratio of resource.
In addition, being divided by the fineness to the flotation pulp (ore pulp i.e. before flotation) in embodiment 1-3 and comparative example
Analysis it has also been found that, the content and comparative example of+98 μm of grades in embodiment 1-3 (coarse sand ingredient, when flotation unserviceable grade)
Compared to about reducing by 2.2%, " owing mill " phenomenon is effectively reduced；Meanwhile in embodiment 1-3-30 μm of grades (thin mud grade,
Can not also be utilized when flotation) content compared with comparative example about reduce by 7.03%, effectively reduce " overground " phenomenon.As it can be seen that
Using process of the invention, can in effective solution delafossite valuable mineral and gangue mineral existing for the ore grinding stage
" owing mill " and " overground " phenomenon, had not only improved the degree of dissociation of valuable mineral but also had reduced the ore grinding degree of gangue mineral, so as to
The influence of flotation pulp medium coarse sand and thin mud to flotation recovery rate is reduced, thus the recovery efficiency of valuable mineral.
Above the embodiments of the present invention are described in detail, but the present invention is not limited to described embodiments.It is right
For those skilled in the art, in the case where not departing from the principle of the invention and spirit, these embodiments are carried out more
Kind change, modification, replacement and modification, still fall in protection scope of the present invention.
Claims (10)
1. a kind of raising delafossite recycles flotation technology, it is characterised in that: the following steps are included:
S1. break process is carried out to copper iron ore with breaking machine, and average particle size being crushed less than 12mm is screened by screening machine
Delafossite；
S2. the broken copper and iron mining belt conveyer in S1 step is transported in ball mill with certain conveying speed and is ground
Broken processing, when ball milling, add a certain amount of water, make the mass concentration 80% of the ore grinding after grinding treatment, and make the ore grinding
Middle fineness is that the content of -74 μm of grades accounts for 25%-30%；
S3. ore grinding obtained in S2 step is transferred in cyclone, makes the quality of overflow pulp dense after the effect of cyclone
Degree is 34%-40%, and the mass concentration of sand setting ore pulp is 80%-84%, and guarantees that fineness is -74 μm of grades in overflow pulp
Content account for 40%-50%；
S4. overflow pulp obtained in S3 step is screened using the sieve in the aperture 0.1mm in high frequency shale shaker, through sieving
Make the mass concentration 55%-65% for sieving ore pulp after choosing, and sieving fineness in upper ore pulp is that the content of -74 μm of grades accounts for
20%-25%, the mass concentration for sieving lower ore pulp is 33%-36%, and sieving fineness in lower ore pulp is that the content of -74 μm of grades accounts for
75%-80%；
S5. ore pulp on the sand setting ore pulp in S3 step and the sieve in S4 step is returned in the ball mill in S2 step, and pressed
Grinding treatment is carried out according to method in S2 step；
S6. ore pulp under the sieve in S4 step is carried out at separation using the processing step of the mixed floating-shallow crust structures-magnetic separation iron of copper sulphur
Reason:
The mixed floating technique of Z1, copper sulphur: the first sludge that mass concentration is 100g/t is separately added into ore pulp under the sieve in S4 step
Dispersing agent, the second sludge dispersing agent that mass concentration is 400g/t, mass concentration are the activator of 100-130g/t, mass concentration
For the collecting agent of 80-150g/t, the copper that copper content is 1.8%-2.5%, sulfur content is 30%-38% is respectively obtained after mixed float
Sulfide mixed concentrate and mixed floating tailing；
Z2, copper-sulfur separating process: the inhibition that mass concentration is 2-2.5kg/t is added into the copper-sulfide mixed concentrate in Z1 step
Agent respectively obtains the iron concentrate of copper concentrate of the copper grade greater than 18% and sulfur grade greater than 38% after mixed float；
Z3, the mixed floating tailing in Z1 step is transferred to the smart magnetic separation processing of progress one thick one in magnetic separator, i.e., first uses magnetic separator
Magnetic roughing is carried out under conditions of magnetic field strength is 180mT, obtains crude iron mine, then again in the condition that magnetic field strength is 160mT
Under to crude iron mine carry out magnetic it is selected, obtain Iron grade be greater than 62% iron ore concentrate.
2. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in S1 step
The maximum particle size of broken delafossite is less than 18mm.
3. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in S2 step
Conveying speed is 100t/h.
4. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in S2 step
The revolving speed of ball mill is 17-19.2r/min, and sand return ratio is 250%-280%.
5. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in S4 step
Sieve is the sieve of polyurethane material.
6. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in S4 step
The vibration frequency of high frequency shale shaker is 1500Hz, and amplitude is less than 2mm.
7. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in Z1 step
First sludge dispersing agent and the second sludge dispersing agent are respectively ammonium sulfate and calgon.
8. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in Z1 step
Activator is copper sulphate.
9. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in Z1 step
Collecting agent is amyl group xanthate.
10. a kind of raising delafossite according to claim 1 recycles flotation technology, it is characterised in that: described in Z2 step
Inhibitor be lime.
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| CN114515652A (en) * | 2022-01-20 | 2022-05-20 | 江西省宜丰万国矿业有限公司 | Flotation method for residual slope type lead-zinc sulfide ore |
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