CN106076590B - Beneficiation method for separating molybdenum oxide tungsten ore and molybdenum sulfide ore in molybdenum tungsten ore - Google Patents
Beneficiation method for separating molybdenum oxide tungsten ore and molybdenum sulfide ore in molybdenum tungsten ore Download PDFInfo
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- CN106076590B CN106076590B CN201610465920.XA CN201610465920A CN106076590B CN 106076590 B CN106076590 B CN 106076590B CN 201610465920 A CN201610465920 A CN 201610465920A CN 106076590 B CN106076590 B CN 106076590B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
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Abstract
The invention relates to a beneficiation method for separating molybdenum oxide tungsten ore and molybdenum sulfide ore in molybdenum tungsten ore, which comprises the following steps: carrying out magnetic separation treatment on the molybdenum-tungsten ore separation raw material for at least two times by adopting dry magnetic separation equipment, so that the molybdenum-tungsten ore separation raw material subjected to magnetic separation is divided into magnetic minerals containing molybdenum tungsten oxide and nonmagnetic minerals containing molybdenum sulfide; and performing a molybdenum oxide tungsten flotation process on the magnetic minerals and performing a molybdenum sulfide flotation process on the nonmagnetic minerals to obtain molybdenum oxide tungsten concentrates and molybdenum sulfide concentrates respectively. The magnetic property of iron-containing minerals in skarn is utilized, and a magnetic suspension combined ore dressing mode is adopted to separate magnetic substances containing molybdenum tungsten oxide and non-magnetic substances containing molybdenum sulfide before ore grinding, so that the selectivity of the ore is optimized, the selection grade of the molybdenum sulfide and molybdenum tungsten oxide entering the flotation is improved, the subsequent flotation process flow is simplified, the sorting index fluctuation caused by the change of the properties of the ore is reduced, and the production cost of the mine is reduced.
Description
Technical field
The present invention relates to a kind of method of physical upgrading, molybdenum oxide tungsten ore and molybdenum sulfide in especially a kind of Separation of Molybdenum tungsten ore
The beneficiation method of ore deposit.
Background technology
Molybdenum deposit is divided into four major classes：Porphyry Molybdenum Deposit, skarn Mo deposit, porphyry copper-molybdenum mine bed and other molybdenum ores
Bed.The ore that other molybdenum deposits, that is, oxygenation efficiency is high, molybdenum grade is low, is present in contaclite, pegmatite and sedimentary rock, mineral deposit
In mineral often containing other elements such as tungsten, bismuth, uranium, it is studied less both at home and abroad, using low.
At present, the production precedent for sorting and extracting of the molybdenum oxide ore of tungsten is industrially especially associated with to molybdenum oxide ore
It is less, the enrichment production of Current Domestic external oxidation molybdenum ore, there are two kinds of ore-dressing technique defects, one is being recycled from ore
Molybdenum sulfide and association low-grade scheelite almost all use the ore-dressing technique of bulk flotation, i.e., diffeential floatation vulcanization after broken ore grinding
Molybdenum, then Scheelite Flotation ore deposit or oxidizing molybdenum ore again from vulcanization molybdic tailing.Substantial amounts of production practices show the molybdenum of oxidized portion
And the sorting result of tungsten ore is poor, the calcium-magnesium-containings such as the clay in ore and dolomite, calcite gangue mineral mostly hardness is small in addition,
It is preferentially crushed in ore grinding, forms sludge, when flotation is easily mingled with and carries secretly, so as to be degrading froth flotation index, causes to float
Select inferior separating effect, it is difficult to meet the needs being processed further.The second is by molybdenum chemical process Separation of Molybdenum tungsten, due in ore
More than 75% gangue mineral is carbonate, is directly leached using hydrochloric acid or sulfuric acid, and processing cost is high, unfriendly to environment.
Previous molybdenum tungsten ore sorts object mainly for single skarns or Porphyry Type ore, for mixed type molybdenum tungsten ore
Beneficiation research is less, and this kind of ore is very big in China's reserves.As certain on China's East Qinling Range-Dabie Mountain Mu Wu metallogenic belts is special
Large-scale molybdenum ore is such mixed type ore, and ore molybdenum oxygenation efficiency is high, association tungsten, iron, fluorite, and Containing Sulfur molybdenum in porphyry is rare
White tungsten, and containing white tungsten, oxidizing molybdenum ore, rare molybdenum sulfide, the iron mineral and preservation is magnetic, valuable mineral disseminated grain size in skarns
Carefully, rich in calcium and magnesium matter carbonate gangue and gangues, the ore properties such as the clay and the gypsum that seriously affect molybdenum tungsten flotation change very
Greatly, extremely difficult choosing.When formulating mineral processing circuit, how to ensure production in obtain higher sorting index, while control again compared with
Low production run cost, it is necessary to which a kind of and entirely different beneficiation method of other molybdenum tungsten ores is provided.
The content of the invention
It is an object of the invention to provide molybdenum oxide tungsten ore in a kind of Separation of Molybdenum tungsten ore with vulcanization molybdenum ore beneficiation method, with
The grade of the molybdenum sulfide and molybdenum-tungsten oxide into flotation is improved, simplifies follow-up flotation process, while also reduces because of ore
Matter fluctuation generate sorting index it is unstable and caused by production risk, and production cost is greatly reduced, improves choosing
Ore deposit efficiency.
The present invention is solved its technical problem and is realized using following technical scheme.
The beneficiation method of molybdenum oxide tungsten ore and vulcanization molybdenum ore in a kind of Separation of Molybdenum tungsten ore, including：
Raw material is selected to carry out the processing of magnetic separation at least twice molybdenum tungsten ore using dry-type magnetic selection apparatus, so that after magnetic separation
Molybdenum tungsten ore selects raw material to be divided into the magnetic mineral comprising molybdenum-tungsten oxide and the non magnetic ore comprising molybdenum sulfide；And to magnetic ore deposit
Object carries out molybdenum-tungsten oxide floatation process and carries out molybdenum sulfide floatation process to non magnetic ore, and then obtains molybdenum-tungsten oxide essence respectively
Ore deposit and vulcanization molybdenum concntrate.
In preferred embodiments of the present invention, the above-mentioned processing of magnetic separation at least twice includes at least：Magnetic separation roughing step, to molybdenum
Tungsten ore selects raw material to carry out magnetic separation roughing, to obtain the first magnetic material and the first non-magnetic material；And step is scanned in magnetic separation, it is right
First non-magnetic material carries out magnetic separation and scans, so as to obtain the second magnetic material and the second non-magnetic material；Wherein, second is magnetic
Material and the first magnetic material are mixed into magnetic mineral；Second non-magnetic material is non magnetic ore.
In preferred embodiments of the present invention, the magnetic field intensity that is used in above-mentioned magnetic separation roughing step for 80 kilo-amperes/rice-
500 kilo-amperes/rice, magnetic separation scan the magnetic field intensity used in step as 145 kilo-amperes/- 1100 kilo-amperes of rice/rice.
In preferred embodiments of the present invention, the dry type magnetic separation used in step is scanned in above-mentioned magnetic separation roughing step and magnetic separation
Equipment is magnetic pulley, dry type roll-type high intensity magnetic separator, dry type cylinder magnetic separator or coarse magnetic separator.
In preferred embodiments of the present invention, beneficiation method further includes：
Magnetic mineral and non magnetic ore are carried out ore grinding processing by ore grinding step respectively；Wherein, the ore grinding of magnetic mineral is thin
It spends and accounts for 55%-90% for -0.074mm；The mog of non magnetic ore accounts for 50%-80% for -0.074mm.
In preferred embodiments of the present invention, above-mentioned molybdenum-tungsten oxide floatation process is by the magnetic mineral after ore grinding step
Roughing flotation is carried out by way of adding pH regulators, inhibitor and collecting agent, the molybdenum-tungsten oxide rough concentrate of acquisition is heated
Molybdenum-tungsten oxide concentrate is obtained after selected；Molybdenum sulfide floatation process is to inhibit the non magnetic ore after ore grinding step by adding
The mode of agent, collecting agent and foaming agent carries out molybdenum sulfide roughing flotation, the molybdenum sulfide rough concentrate of acquisition through repeatedly regrind it is selected after
Obtain vulcanization molybdenum concntrate.
In preferred embodiments of the present invention, in above-mentioned molybdenum-tungsten oxide floatation process, pH regulators are sodium carbonate, hydroxide
One or more kinds of combinations in sodium and lime, inhibitor are in waterglass, aluminum sulfate, modified tannin acid and carboxymethyl cellulose
One or more kinds of combinations, collecting agent is modified oleic acid, oxidized paraffin wax soap or modified tall oil；In molybdenum sulfide floatation process,
Inhibitor is waterglass, aluminum sulfate, sodium thioglycolate or vulcanized sodium, and collecting agent is kerosene, diesel oil, butyl xanthate and butyl ammonium aerofloat
In one or more kinds of combinations, foaming agent is terpenic oil, methyl isobutyl carbinol or other composite alcohols.
In preferred embodiments of the present invention, before the processing of magnetic separation at least twice is carried out, beneficiation method further includes：
Coarse crushing step selects raw material, particle size after cracking by molybdenum tungsten ore is made after skarns and porphyry mixed type molybdenum tungsten ore coarse crushing
For 50mm-150mm；One section of screening step, by the molybdenum tungsten ore after coarse crushing step select raw material using screen size as 10mm-60mm into
Row screening, wherein, the processing of magnetic separation at least twice is carried out to the undersize of one section of screening step；And middle quick short steps are rapid, to one section
Broken, particle size after cracking 8mm-50mm during the oversize of screening step carries out, and by the broken material after middle quick short steps are rapid
It returns and carries out one section of screening step again.
In preferred embodiments of the present invention, above-mentioned ore deposit choosing method is additionally included in the progress magnetic separation of the first non-magnetic material and scans
Two sections of screening steps before step, two sections of screening steps are sieved by 5mm-15mm of screen size, then the sieve to acquisition
Upper product and undersize carry out magnetic separation and scan step respectively.
In preferred embodiments of the present invention, screening plant that above-mentioned one section of screening step and two sections of screening steps use for
Self centering sieves or circular vibrating screen.
The advantageous effects of the present invention：
The present invention using skarns on the super-huge molybdenum tungsten metallogenic belt in East Qinling Range-Dabie Mountain and porphyry mixed type molybdenum tungsten ore as
Raw material provides a kind of beneficiation method for mixed type molybdenum tungsten ore, passes through flotation combined ore-dressing technique Separation of Molybdenum after first magnetic separation
Tungsten ore specifically includes：Raw material is selected to carry out the processing of magnetic separation at least twice molybdenum tungsten ore, so that the molybdenum tungsten ore choosing after magnetic separation is former
Material is divided into the magnetic mineral comprising molybdenum-tungsten oxide and the non magnetic ore comprising molybdenum sulfide；And magnetic mineral is aoxidized
Molybdenum tungsten floatation process simultaneously carries out molybdenum sulfide floatation process to non magnetic ore, so as to obtain molybdenum-tungsten oxide concentrate and molybdenum sulfide respectively
Concentrate.The present invention has abandoned conventional molybdenum tungsten bulk flotation and has used gravity treatment pre- according to the characteristic of molybdenum tungsten ore and gangue density variation
Joint flotation technology flow after choosing.The spot of skarns magnetism ores and Containing Sulfur molybdenum containing molybdenum-tungsten oxide is isolated before ore grinding
Rock nonmagnetics ore, wherein, the nonmagnetics that magnetic separation obtains enters vulcanization molybdenum flotation, obtains qualified molybdenum sulfide essence
Ore deposit, the magnetic material that magnetic separation obtains then carries out molybdenum oxide floatation of tungsten mineral, and obtains molybdenum-tungsten oxide concentrate through roughing and heating concentration.This
Invention improves the grade of the molybdenum sulfide and molybdenum-tungsten oxide into flotation, simplifies follow-up flotation process, while also reduces
Because ore properties fluctuate generate sorting index it is unstable due to caused by production risk, and production cost is greatly reduced,
Improve beneficiating efficiency.
In addition, the present invention carries out magnetic separation using dry-type magnetic selection apparatus, the desliming ring that wet magnetic separation equipment need to carry out is eliminated
Section, ore dressing process are more simple.Meanwhile technical scheme is easy to implement, at low cost and technological process is stablized, Neng Gouyou
Effect is solved because ore oxidation degree is high, change of properties is big, mineral species are complicated, primary and secondary slime is more, so as to cause ore dressing
Difficulty is larger, and index fluctuates larger, the low problem of resource utilization.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is molybdenum oxide tungsten ore and the process flow chart of the beneficiation method of vulcanization molybdenum ore in Separation of Molybdenum tungsten ore of the invention.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Molybdenum oxide tungsten ore is specifically included with vulcanizing the beneficiation method of molybdenum ore in Separation of Molybdenum tungsten ore provided in an embodiment of the present invention
Following steps.
Step 1：Coarse crushing step
By such as skarns and porphyry mixed type molybdenum the tungsten ore coarse crushing in coarse crushing crusher, particle size after cracking 50mm-
150mm obtains molybdenum tungsten ore and selects raw material.Coarse crushing crusher is gyratory crusher or jaw crusher.It can root in implementation process
Suitable coarse crushing crusher is selected according to the features such as molybdenum tungsten ore treating capacity is big, mixed ore hardness is relatively low.
Step 2：One section of screening step
Raw material is selected to be sieved by 10mm-60mm of screen size the molybdenum tungsten ore after coarse crushing step, wherein, to one section
The undersize of screening step carries out the processing of magnetic separation at least twice.Screening plant selection self centering sieve or circular vibrating screen.
Step 3：Middle quick short steps are rapid, broken, particle size after cracking 8mm- in being carried out to the oversize after one section of screening step
50mm, and the broken material after middle quick short steps are rapid is returned and carries out one section of screening step again.Crushing plant breaks for circular cone
Broken machine, composite crusher or jaw crusher.
Step 4：Magnetic separation roughing step selects molybdenum tungsten ore raw material to carry out magnetic separation roughing, with the first magnetic material of acquisition and
First non-magnetic material.Specifically, raw material is selected to feed to magnetic separation by oscillating feeder molybdenum tungsten ore broken, after screening to set
It is standby so that the first magnetic material and the first non-magnetic material obtained after magnetic separation roughing respectively enter to magnetic material feed bin and
Buffer bin.The magnetic plant used can be specifically magnetic pulley, dry type roll-type high intensity magnetic separator, dry type for dry-type magnetic selection apparatus
Cylinder magnetic separator or coarse magnetic separator.The magnetic field intensity of roughing separation equipment is 80 kilo-amperes/- 500 kilo-amperes of rice/rice.Magnetic separation roughing walks
Follow-up magnetic can be omitted if tungsten recovery rate in magnetic material is more than 90% in rapid and scan operation, that is, omit step 6, only carry out a magnetic
Choosing is handled.
Step 5：Two sections of screening steps, the step are selective step, and carrying out magnetic separation in the first non-magnetic material scans step
Before rapid, it is preferable that the first non-magnetic material in buffer bin can be sent into vibrating screen two sections of screenings of progress and (be referred to as
Regrading sieves again), screen size 5mm-15mm, then magnetic separation is carried out respectively to the oversize and undersize of acquisition
Scan step.By two sections of screening steps, various sizes of material is screened again so that the material of large-size and compared with
The material of small size carries out magnetic separation and scans respectively, is conducive to improve efficiency of magnetic separation.
Step 6：Step is scanned in magnetic separation, and carrying out magnetic separation to the first non-magnetic material scans, so as to obtain the second magnetic material
With the second non-magnetic material；Wherein, the second magnetic material and the first magnetic material are mixed into magnetic mineral；Second nonmagnetics
Expect for non magnetic ore.The magnetic field intensity for scanning equipment is 145 kilo-amperes/- 1100 kilo-amperes of rice/rice.Prioritizing selection is aqueous to ore
Measure magnetic plant adaptable, to powder good separation effect.
Step 7：Magnetic mineral and non magnetic ore are carried out ore grinding processing by ore grinding step respectively.Specifically, by magnetic ore deposit
Object is fed to the first grinding system, and using hydroclone classification, mog accounts for 55%-90% for -0.074mm；It will be non-
Magnetic mineral is fed to the second grinding system, and using long tapered hydroclone classification, mog accounts for for -0.074mm
50%-80%.
Step 8：Molybdenum-tungsten oxide floatation process, by the magnetic mineral after ore grinding step process by add pH regulators,
The mode of inhibitor and collecting agent carries out roughing flotation, the heated selected rear acquisition molybdenum-tungsten oxide of molybdenum-tungsten oxide rough concentrate of acquisition
Concentrate.Wherein it is preferred to pH regulators are one or more kinds of combinations in sodium carbonate, sodium hydroxide and lime；Inhibitor is
One or more kinds of combinations in waterglass, aluminum sulfate, modified tannin acid and carboxymethyl cellulose；Collecting agent be modified oleic acid,
Oxidized paraffin wax soap or modified tall oil.The tungsten Grade Control of molybdenum-tungsten oxide rough concentrate is in 0.5%-4.0%.
A preferred embodiment as shown in Figure 1：
Further, in step 8, molybdenum-tungsten oxide roughing flotation includes 2 preconcentration and scans for 2-3 times, divides after roughing flotation
Molybdenum-tungsten oxide rough concentrate and molybdenum-tungsten oxide rougher tailings are not obtained.Wherein, after the heated stirring reagent removal of molybdenum-tungsten oxide rough concentrate again
By 3-4 selected acquisition molybdenum-tungsten oxide concentrate, scanned using 1-3 times and obtain molybdenum-tungsten oxide cleaner tailings.
Step 9：Molybdenum sulfide floatation process, by the non magnetic ore after ore grinding step process by adding inhibitor, catching
The mode for receiving agent and foaming agent carries out molybdenum sulfide roughing flotation, the molybdenum sulfide rough concentrate of acquisition through regrind it is selected after obtain molybdenum sulfide
Concentrate.Wherein it is preferred to inhibitor is waterglass, aluminum sulfate, sodium thioglycolate or vulcanized sodium；Collecting agent for kerosene, diesel oil,
One or more kinds of combinations in butyl xanthate and butyl ammonium aerofloat；Foaming agent is terpenic oil, methyl isobutyl carbinol or other are multiple
Close alcohols.Molybdenum sulfide rough concentrate molybdenum Grade Control is in 1.0%-8.0%.
A preferred embodiment as shown in Figure 1：
Further, in step 9, molybdenum sulfide roughing flotation includes 2 preconcentration and scans for 2-3 times, after roughing flotation respectively
Obtain molybdenum sulfide rough concentrate and molybdenum sulfide rougher tailings.Wherein, molybdenum sulfide rough concentrate is by ore grinding, selected, ore grinding, selected again again
Mode obtain vulcanization molybdenum concntrate.Each ore grinding and concentration times are 2-3 times；Molybdenum sulfide rough concentrate obtains after 3 times are scanned
Molybdenum sulfide cleaner tailings.
What deserves to be explained is under the technological guidance of the present invention, those skilled in the art can be flexible according to actual conditions
Select it is selected, scan and ore grinding number, the technical solution formed is within protection scope of the present invention.Also,
When necessary, a magnetic separation, three times magnetic separation twice, magnetic separation or four magnetic separation can be carried out.Magnetic separation number is not used in limitation originally
Invention.
In order to which those skilled in the art is enable more to understand the present invention, in conjunction with specific embodiment to the present invention into traveling
One step explanation.
Embodiment 1
The present embodiment selects high skarns mixed ore to select raw material for ore deposit, wherein, skarns percentage is 65%, spot
Rock percentage is 35%, and the grade of molybdenum is 0.11%, WO in raw ore3Grade be 0.21%, TFe content be
6.87%.
High skarns mixed ore coarse crushing and is obtained into molybdenum in coarse crushing crusher (gyratory crusher or jaw crusher)
Tungsten ore selects raw material, wherein, particle size after cracking 50mm.Select raw material in screen size for 10mm's the molybdenum tungsten ore after coarse crushing step
Screening plant (self centering sieves or circular vibrating screen) carries out one section of screening.Then, two are carried out to the undersize of one section of screening step
Secondary magnetic separation processing.
To the oversize after one section of screening step in broken crusher (gyratory crusher, composite crusher or jaw
Formula crusher) in carry out in it is broken, wherein, particle size after cracking 8mm, and by after middle quick short steps are rapid broken material return again
Carry out one section of screening step.
It is 120 kilo-amperes/rice raw material to be selected to be fed by oscillating feeder to magnetic field intensity molybdenum tungsten ore broken, after screening
Magnetic separation roughing is carried out in dry-type magnetic selection apparatus, with the first magnetic material and the first non-magnetic material of acquisition.By magnetic separation roughing
The first magnetic material and the first non-magnetic material obtained after step, which is respectively enterd to magnetic material feed bin, to ease up slug storehouse.
The first non-magnetic material is carried out magnetic separation in magnetic field intensity is the dry-type magnetic selection apparatus of 240 kilo-amperes/rice to scan, from
And obtain the second magnetic material and the second non-magnetic material.
Wherein, the second magnetic material and the first magnetic material are mixed into magnetic mineral；Second non-magnetic material is non-magnetic
Property mineral.
Magnetic mineral and non magnetic ore are subjected to ore grinding processing respectively.Specifically, magnetic mineral is fed to the first mill
Ore deposit system, and using hydroclone classification, mog accounts for 65% for -0.074mm.Non magnetic ore is fed to the second mill
Ore deposit system, and using long tapered hydroclone classification, mog accounts for 55% for -0.074mm.
By the magnetic mineral after ore grinding step process by adding pH regulators sodium carbonate, inhibitor waterglass and collecting
The mode that agent is modified oleic acid carries out molybdenum-tungsten oxide roughing flotation, the molybdenum-tungsten oxide rough concentrate of acquisition it is heated it is selected after aoxidized
Molybdenum tungsten concentrate.In process of production, the tungsten grade of molybdenum-tungsten oxide rough concentrate is 3%.
By the non magnetic ore after ore grinding step process by adding inhibitor waterglass, collecting agent kerosene and foaming agent
The mode of terpenic oil carries out molybdenum sulfide roughing flotation, the molybdenum sulfide rough concentrate of acquisition through regrind it is selected after obtain vulcanization molybdenum concntrate.
In process of production, molybdenum sulfide rough concentrate molybdenum grade is 4%.
Ore-dressing technique step magnetic separation Separation of Molybdenum tungsten ore according to the invention is that the present embodiment obtains as a result, magnetic material
Yield is 62.4%, WO in magnetic material3Distributive law for 86.2%, the distributive law 17.5% of molybdenum.Magnetic material and nonmagnetics point
After other flotation, compared with original first floating molybdenum sulfide floats molybdenum-tungsten oxide flow again, the rate of recovery of molybdenum improves 1.8%, the recycling of tungsten
Rate improves 2.1%.
Embodiment 2
The present embodiment selects ferroan molybdenum tungsten ore to select raw material for ore deposit, and based on porphyry, wherein, hundred shared by skarns
Divide than being 23%, porphyry percentage is 77%, and the grade of molybdenum is 0.25%, WO in raw ore3Grade be 0.08%, TFe
Content be 3.17%.
Ferroan molybdenum tungsten ore coarse crushing and is obtained into molybdenum in coarse crushing crusher (gyratory crusher or jaw crusher)
Tungsten ore selects raw material, wherein, particle size after cracking 70mm.Select raw material in screen size for 15mm's the molybdenum tungsten ore after coarse crushing step
Screening plant (self centering sieves or circular vibrating screen) carries out one section of screening.Then, two are carried out to the undersize of one section of screening step
Secondary magnetic separation processing.
To the oversize after one section of screening step in broken crusher (gyratory crusher, composite crusher or jaw
Formula crusher) in carry out in it is broken, wherein, particle size after cracking 12mm, and by after middle quick short steps are rapid broken material return again
One section of screening step of secondary progress.
It is 220 kilo-amperes/rice raw material to be selected to be fed by oscillating feeder to magnetic field intensity molybdenum tungsten ore broken, after screening
Magnetic separation roughing is carried out in dry-type magnetic selection apparatus, with the first magnetic material and the first non-magnetic material of acquisition.By magnetic separation roughing
The first magnetic material and the first non-magnetic material obtained after step, which is respectively enterd to magnetic material feed bin, to ease up slug storehouse.
The first non-magnetic material in buffer bin is sent into vibrating screen two sections of screenings of progress and (is referred to as regrading
Or sieve again), screen size 5mm, then magnetic separation is carried out respectively to the oversize and undersize of acquisition and scans step.
The first non-magnetic material is carried out magnetic separation in magnetic field intensity is the dry-type magnetic selection apparatus of 640 kilo-amperes/rice to scan, from
And obtain the second magnetic material and the second non-magnetic material.
Wherein, the second magnetic material and the first magnetic material are mixed into magnetic mineral；Second non-magnetic material is non-magnetic
Property mineral.
Magnetic mineral and non magnetic ore are subjected to ore grinding processing respectively.Specifically, magnetic mineral is fed to the first mill
Ore deposit system, and using hydroclone classification, mog accounts for 65% for -0.074mm；Non magnetic ore is fed to the second mill
Ore deposit system, and using long tapered hydroclone classification, mog accounts for 70% for -0.074mm.
By the magnetic mineral after ore grinding step process by adding pH regulators sodium hydroxide, inhibitor aluminum sulfate and catching
The mode for receiving agent oxidized paraffin wax soap carries out molybdenum-tungsten oxide roughing flotation, is scanned including 2 preconcentration and 2 times, divides after roughing flotation
Molybdenum-tungsten oxide rough concentrate and molybdenum-tungsten oxide rougher tailings are not obtained.Using 3 essences after the heated stirring of molybdenum-tungsten oxide rough concentrate
Choosing obtains molybdenum-tungsten oxide concentrate, is scanned using 1 time and obtains molybdenum-tungsten oxide cleaner tailings.In process of production, molybdenum-tungsten oxide is thick
The tungsten grade of concentrate is 2%.
By the non magnetic ore after ore grinding step process by adding inhibitor aluminum sulfate, collecting agent diesel oil and foaming agent
The mode of methyl isobutyl carbinol carries out molybdenum sulfide roughing flotation, the molybdenum sulfide rough concentrate of acquisition through regrind it is selected after vulcanized
Molybdenum concntrate.In process of production, the molybdenum grade of molybdenum sulfide rough concentrate is 6%.
Ore-dressing technique step magnetic separation Separation of Molybdenum tungsten ore according to the invention is that the present embodiment obtains as a result, magnetic material
Yield is 46.5%, WO in magnetic material3Distributive law for 84.4%, the distributive law of molybdenum is 18.8%.In the present embodiment, pass through
After Magneto separate, the dosage of floating agent reduces by 13%, and effectively reduces production cost, while first floats molybdenum sulfide with original
It floats molybdenum-tungsten oxide flow again to compare, the grade of molybdenum concntrate improves 1.2%, and the rate of recovery of tungsten improves 1.7%.
Embodiment 3
The present embodiment selects skarns and porphyry mixed ore containing high Fe content, wherein, skarns percentage is
55%, porphyry percentage is 45%, and the grade of molybdenum is 0.17%, WO in raw ore3Grade be 0.11%, TFe content
5.08%.
By the skarns containing high Fe content and porphyry mixed ore in coarse crushing crusher (gyratory crusher or jaw crushing
Machine) in coarse crushing and obtain molybdenum tungsten ore and select raw material, wherein, particle size after cracking 120mm.Molybdenum tungsten ore after coarse crushing step is selected into raw material
One section of screening is carried out in the screening plant (self centering sieves or circular vibrating screen) that screen size is 25mm.Then, to one section of screening step
Rapid undersize carries out the processing of magnetic separation at least twice, can be three times, four times or more times.
To the oversize after one section of screening step in broken crusher (gyratory crusher, composite crusher or jaw
Formula crusher) in carry out in it is broken, wherein, particle size after cracking 25mm, and by after middle quick short steps are rapid broken material return again
One section of screening step of secondary progress.
It is 280 kilo-amperes/rice raw material to be selected to be fed by oscillating feeder to magnetic field intensity molybdenum tungsten ore broken, after screening
Magnetic separation roughing is carried out in dry-type magnetic selection apparatus (magnetic pulley, dry type cylinder magnetic separator or coarse magnetic separator), with the first of acquisition
Magnetic material and the first non-magnetic material.The first magnetic material and the first non-magnetic material obtained after magnetic separation roughing step
It respectively enters to magnetic material feed bin and eases up slug storehouse.
The first non-magnetic material in buffer bin is sent into vibrating screen two sections of screenings of progress and (is referred to as regrading
Or sieve again), screen size 12mm, then magnetic separation is carried out respectively to the oversize and undersize of acquisition and scans step.
By the first non-magnetic material in dry-type magnetic selection apparatus (magnetic pulley, the dry type roller that magnetic field intensity is 800 kilo-amperes/rice
Formula magnetic separator or coarse magnetic separator) in carry out magnetic separation scan, so as to obtain the second magnetic material and the second non-magnetic material.
What deserves to be explained is in the present embodiment, the material after magnetic separation roughing and magnetic separation are scanned carries out magnetic separation again respectively
With scan, to achieve the purpose that multiple magnetic separation, so as to improve the grade of molybdenum-tungsten oxide concentrate in product and vulcanization molybdenum concntrate.Its
In, after magnetic separation, the magnetic material and preceding one or many magnetic materials magneticly elected that magneticly elect for the last time are mixed into magnetism
Mineral；The non-magnetic material that last time magneticly elects is non magnetic ore.
Magnetic mineral and non magnetic ore are subjected to ore grinding processing respectively.Specifically, magnetic mineral is fed to the first mill
Ore deposit system, and using hydroclone classification, mog accounts for 70% for -0.074mm；Non magnetic ore is fed to the second mill
Ore deposit system, and using long tapered hydroclone classification, mog accounts for 75% for -0.074mm.
By the magnetic mineral after ore grinding step process by add pH regulators lime, inhibitor carboxymethyl cellulose and
The mode of collector modified tall oil carries out molybdenum-tungsten oxide roughing flotation, after the heated stirring of molybdenum-tungsten oxide rough concentrate after flotation
Selected acquisition molybdenum-tungsten oxide concentrate.In process of production, molybdenum-tungsten oxide rough concentrate tungsten grade is 2.2%.
By the non magnetic ore after ore grinding step process by adding inhibitor vulcanized sodium, collecting agent butyl ammonium aerofloat and rising
The mode of infusion terpenic oil carries out molybdenum sulfide roughing flotation, the molybdenum sulfide rough concentrate of acquisition through regrind it is selected after obtain molybdenum sulfide essence
Ore deposit.In process of production, the molybdenum grade of molybdenum sulfide rough concentrate is 5%.
Ore-dressing technique step magnetic separation Separation of Molybdenum tungsten ore according to the invention is that the present embodiment obtains as a result, magnetic material
Yield is 78.3%, WO in magnetic material3Distributive law for 90.2%, the distributive law of molybdenum is 13.7%.The experimental results showed that this reality
Apply the Magneto separate best results of example.By flotation, compared with original first floating molybdenum sulfide floats molybdenum-tungsten oxide flow again, molybdenum concntrate
Grade improves 2.3%, and the rate of recovery of tungsten improves 5.1%.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that it wraps in the following claims
Include all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. the beneficiation method of molybdenum oxide tungsten ore and vulcanization molybdenum ore in a kind of Separation of Molybdenum tungsten ore, which is characterized in that it includes：
Raw material is selected to carry out the processing of magnetic separation at least twice molybdenum tungsten ore using dry-type magnetic selection apparatus, so that described in after magnetic separation
Molybdenum tungsten ore selects raw material to be divided into the magnetic mineral comprising molybdenum-tungsten oxide and the non magnetic ore comprising molybdenum sulfide；And
Molybdenum-tungsten oxide floatation process is carried out to the magnetic mineral and molybdenum sulfide floatation process is carried out to the non magnetic ore, into
And molybdenum-tungsten oxide concentrate and vulcanization molybdenum concntrate are obtained respectively；
Molybdenum-tungsten oxide floatation process includes heating concentration.
2. beneficiation method according to claim 1, which is characterized in that the processing of magnetic separation at least twice includes：
Magnetic separation roughing step selects the molybdenum tungsten ore raw material to carry out magnetic separation roughing, non-magnetic with the first magnetic material of acquisition and first
Property material；And
Step is scanned in magnetic separation, and carrying out magnetic separation to first non-magnetic material scans, so as to obtain the second magnetic material and second
Non-magnetic material；Wherein, second magnetic material and first magnetic material are mixed into the magnetic mineral；Described
Two non-magnetic materials are the non magnetic ore.
3. beneficiation method according to claim 2, which is characterized in that the magnetic field intensity used in the magnetic separation roughing step
For 80 kilo-amperes/- 500 kilo-amperes of rice/rice, the magnetic separation scan the magnetic field intensity that is used in step for -1100 kilo-ampere of 145 kilo-amperes/rice/
Rice.
4. beneficiation method according to claim 3, which is characterized in that step is scanned in the magnetic separation roughing step and the magnetic separation
The dry-type magnetic selection apparatus used in rapid is magnetic pulley, dry type roll-type high intensity magnetic separator, dry type cylinder magnetic separator or bulk magnetic
Select machine.
5. beneficiation method according to claim 2, which is characterized in that further include：
The magnetic mineral and the non magnetic ore are carried out ore grinding processing by ore grinding step respectively；
Wherein, the mog of the magnetic mineral accounts for 55%-90% for -0.074mm；The mog of the non magnetic ore
50%-80% is accounted for for -0.074mm.
6. beneficiation method according to claim 5, which is characterized in that the molybdenum-tungsten oxide floatation process is will be through the mill
The magnetic mineral after ore deposit step carries out roughing flotation by way of adding pH regulators, inhibitor and collecting agent, obtains
Molybdenum-tungsten oxide rough concentrate it is heated it is selected after obtain the molybdenum-tungsten oxide concentrate；The molybdenum sulfide floatation process is will be described in warp
It is thick that the non magnetic ore after ore grinding step carries out molybdenum sulfide flotation by way of adding inhibitor, collecting agent and foaming agent
Choosing, the molybdenum sulfide rough concentrate of acquisition through repeatedly regrind it is selected after obtain the vulcanization molybdenum concntrate.
7. beneficiation method according to claim 6, which is characterized in that in the molybdenum-tungsten oxide floatation process, the pH tune
Whole dose is one or more kinds of combinations in sodium carbonate, sodium hydroxide and lime, and the inhibitor is waterglass, aluminum sulfate, changes
Property tannic acid and carboxymethyl cellulose in one or more kinds of combinations, the collecting agent be modified oleic acid, oxidized paraffin wax soap or
Modified tall oil；In the molybdenum sulfide floatation process, the inhibitor be waterglass, aluminum sulfate, sodium thioglycolate or vulcanized sodium,
The collecting agent is one or more kinds of combinations in kerosene, diesel oil, butyl xanthate and butyl ammonium aerofloat, and the foaming agent is pine camphor
Oil, methyl isobutyl carbinol or other composite alcohols.
8. the beneficiation method according to claim 2 or 6, which is characterized in that handle it in magnetic separation at least twice described in progress
Before, the beneficiation method further includes：
Coarse crushing step selects raw material, particle size after cracking by the molybdenum tungsten ore is made after skarns and porphyry mixed type molybdenum tungsten ore coarse crushing
For 50mm-150mm；
One section of screening step, by the molybdenum tungsten ore after the coarse crushing step select raw material using screen size as 10mm-60mm into
Row screening, wherein, magnetic separation at least twice described in the undersize progress of one section of screening step is handled；And
Middle quick short steps are rapid, broken, particle size after cracking 8mm-50mm in being carried out to the oversize of one section of screening step, and will be through
Cross the middle quick short steps it is rapid after broken material return carry out one section of screening step again.
9. beneficiation method according to claim 8, which is characterized in that it is non-magnetic that the beneficiation method is additionally included in described first
Property material carry out the magnetic separation and scan two sections of screening steps before step, two sections of screening steps are using screen size as 5mm-
15mm is sieved, then is carried out the magnetic separation respectively to the oversize and undersize of acquisition and scanned step.
10. beneficiation method according to claim 9, which is characterized in that one section of screening step and two sections of screenings
The screening plant that step uses is sieved for self centering or circular vibrating screen.
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| CN106583022A (en) * | 2016-11-23 | 2017-04-26 | 昆明理工大学 | Beneficiation method for copper-nickel sulfide ore containing pyrrhotite |
| CN106694236B (en) * | 2016-12-07 | 2018-11-20 | 广西大学 | A kind of preparation method of Mo-bearing Iron Ores collecting agent |
| PE20200396A1 (en) * | 2017-08-03 | 2020-02-26 | Basf Se | SEPARATION OF A MIXTURE USING MAGNETIC CARRIER PARTICLES |
| CN107971125A (en) * | 2017-11-30 | 2018-05-01 | 长春黄金研究院 | Improve low-grade high argillization skarns ore copper-cobalt ore molybdenum concntrate rate of recovery method |
| CN109939835B (en) * | 2017-12-21 | 2021-06-08 | 有研资源环境技术研究院(北京)有限公司 | Flotation inhibitor for separating molybdenite and talc and preparation method thereof |
| CN108580055B (en) * | 2018-08-01 | 2019-12-31 | 中冶北方（大连）工程技术有限公司 | Mineral separation process for iron-containing molybdenum ore |
| CN111359782B (en) * | 2018-12-26 | 2022-01-14 | 有研资源环境技术研究院(北京)有限公司 | Combined flotation reagent for inhibiting magnesium-containing silicate gangue minerals |
| CN109465106B (en) * | 2018-12-27 | 2021-05-14 | 河南省岩石矿物测试中心 | Sorting method for tungsten-molybdenum ore |
| CN110586333A (en) * | 2019-09-17 | 2019-12-20 | 南华大学 | Nickel-molybdenum ore collecting agent and preparation method and application thereof |
| CN112718231B (en) * | 2020-12-15 | 2023-04-21 | 中国地质科学院郑州矿产综合利用研究所 | Mineral separation method of molybdenite of magnesium-rich mineral |
| CN114192286A (en) * | 2021-12-01 | 2022-03-18 | 湖南柿竹园有色金属有限责任公司 | Efficient nontoxic molybdenum, bismuth and sulfur recovery method |
| CN114950712B (en) * | 2022-05-27 | 2023-10-13 | 华刚矿业股份有限公司 | Combined treatment process for comprehensively recovering copper and cobalt |
| CN114749282B (en) * | 2022-05-31 | 2024-07-16 | 西安建筑科技大学 | Calcium molybdate vulcanization flotation method |
| CN118022974B (en) * | 2024-04-10 | 2024-06-07 | 湖南有色新田岭钨业有限公司 | Screening and gravity separation combined mineral separation process for scheelite |
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