CN105381868B - Physical beneficiation phosphorus reduction method for skarn type high-phosphorus molybdenum ore - Google Patents
Physical beneficiation phosphorus reduction method for skarn type high-phosphorus molybdenum ore Download PDFInfo
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- CN105381868B CN105381868B CN201510971586.0A CN201510971586A CN105381868B CN 105381868 B CN105381868 B CN 105381868B CN 201510971586 A CN201510971586 A CN 201510971586A CN 105381868 B CN105381868 B CN 105381868B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/025—Precious metal ores
Abstract
The invention discloses a physical beneficiation and phosphorus reduction method for skarn type high-phosphorus molybdenum ore, which comprises the following steps: (1) crushing: crushing and screening raw ores by a crusher, and returning and crushing the raw ores with the grain size of +3mm until the grain sizes of all the raw ores reach the grade of-3 mm; (2) grinding: adding crushed-3 mm raw ore into raw ore grinding equipment to perform closed circuit grinding operation, and simultaneously adding 500-1000 g/t of water glass and 250-800 g/t of phosphate rock inhibitor into a grinding machine to grind the raw ore to the content of 55-75% of-0.075 mm; (3) performing flotation roughing operation; (4) performing flotation scavenging operation; (5) regrinding the rough concentration molybdenum concentrate: adding 100-280 g/t of sulfur inhibitor and 150-300 g/t of phosphate rock inhibitor into the rough concentration molybdenum concentrate regrinding equipment to regrind the rough concentration molybdenum concentrate until the content of-0.045 mm is 70-95%; (6) and (5) flotation and fine selection operation. The method can reduce the phosphorus content in the molybdenum concentrate product to be below the standard, and obtain the high-quality molybdenum concentrate product.
Description
Technical field
The present invention relates to the beneficiation enrichment technology field of skarn type high phosphorus molybdenum ore, a kind of skarn type is referred in particular to
The method that phosphorus drops by physical upgrading in high phosphorus molybdenum ore, can obtain the qualified high-quality molybdenum concntrate product of impurity phosphorus content.The present invention
Pass through the phosphorous high-quality molybdenum concntrate up to standard of physical upgrading technique productions suitable for various skarn type high phosphorus molybdenum ores.
Background technology
Molybdenum is a kind of silvery white rare metal, due to having the advantages that high intensity, high-melting-point, corrosion-resistant, resistance to grinding, and it is wide
It is general to be applied to the industries such as metallurgical, electric, chemical industry, Aero-Space, it is non-renewable grand strategy resource, is the high-new skill of development
Art, the important foundation material realized modernization of the country, build modern national defense.Critical role is accounted in the whole nation, there is support to economy
Effect.
China's molybdenum ore resource very abundant, it is one of six big Dominant Mineral Resources of China.Exploitation of the China to mineral resources
Using generally following poor, easy first and difficult later principle after getting rich first, with the high speed development of modern industry, the limited molybdenum ore rich ore in China
And the molybdenum ore resource easily selected has been petered out, currently available molybdenum ore resource increasingly tends to poor, thin, miscellaneous.Ore provides
In source S, P, Si etc. be referred to as interstitial element objectionable impurities and valuable mineral fine-grained disseminated grain, cause ore dressing difficulty is big, efficiency is low,
Poor product quality.
Phosphorus in molybdenum ore mainly exists in the form of apatite or fluor-apatite etc., more with granular and irregular set
Body, and the close symbiosis of the gangue mineral such as target minreal molybdenite or calcite, pyroxene, garnet, should not with its Mineral separation,
It is phosphorous higher to easily cause dressing product.Because the molybdenum overwhelming majority is used for steel industry, as adding for the various steel alloys of production
Add agent or with forming advanced alloy with tungsten, nickel, cobalt, zirconium, titanium, vanadium, rhenium etc., and phosphorus is very harmful element during steel smelting
One of, phosphorus content increase, intensity, the hardness of steel are improved, and plasticity and toughness are remarkably decreased.Particularly temperature is lower, to plasticity
Influence with toughness is bigger, so as to significantly increase the cold brittleness and solderability of steel, has a strong impact on the product quality of steel alloy, because
This metallurgical industry has strict demand, metallurgy industry standard to the objectionable impurities phosphorus in molybdenum concntrate product（YS/T235-2007）It is required that
Impurity P≤0.02% in molybdenum concntrate product.
Be molybdenum because skarn type molybdenum ore is available for the valuable element of recovery, its is phosphorous, and to have height to have low, and usual raw ore is phosphorous to be surpassed
When 0.10%, objectionable impurities phosphorus is often exceeded in the molybdenum concntrate that ore dressing plant is produced, and has a strong impact on the sale of molybdenum concntrate product
Price and market.The waterglass suppression silicates gangue mineral effect added at present in the floatation process of ore dressing plant is preferable, such as public
The number of opening is CN101380609, and publication date discloses a kind of molybdenum concentrate floatation work for the Chinese patent literature on March 11st, 2009
Suppress the process of phosphorus impurities in skill, using the regime of agent that makes up a prescription is combined, synthesis uses waterglass and prodan conduct
Press down phosphorus agent, waterglass is made an addition in molybdenum concentrate floatation primary grinding ball mill and added with the ratio of 1.5-2 kgs/tonne of raw ore
Enter；Prodan is made an addition in molybdenum concentrate floatation secondary grinding ball mill by 20-30g/T raw ores, obtains the impurity of molybdenum concntrate
Suppress to effective.
But phosphorous apatite mineral is because disseminated grain size is relatively thin and the close symbiosis of other mineral, waterglass class inhibitor
It is poor to its inhibition, cause it to be easily mixed into molybdenum concntrate so that molybdenum concntrate foreign matter of phosphor content overproof, while reduce concentrate
Molybdenum grade.Phosphorus content might not can be reduced by increasing waterglass dosage, but molybdenum sulfide mineral is produced groove phenomenon, be reduced
Molybdenum recovery.For phosphorous exceeded molybdenum concntrate product, molybdenum ore dressing plant generally use chemical mineral processing technique, i.e., in sour environment
Special dephosphorization chemical agent is added, wet-leaching is carried out under the conditions of 110 DEG C or so, to obtain the qualified molybdenum concntrate of phosphorus content
Product.The process costs are higher, and can produce poisonous and hazardous leaching waste liquid needs to handle, while can cause 0.5% or so molybdenum
Metal loss.
The content of the invention
For such skarn type high phosphorus molybdenum ore Phosphate minerals disseminated grain size it is thin, be difficult to and the molybdenum-bearing mineral point such as molybdenite
From, cause the phosphorous exceeded problem of molybdenum concntrate product, the present invention proposes a kind of physical upgrading drop of skarn type high phosphorus molybdenum ore
Phosphorus method, using this method, on the premise of molybdenum concentrate grade and the rate of recovery is ensured, make phosphorous in molybdenum concntrate product to be down to standard
Hereinafter, eliminate ore dressing plant and be directed to the subsequent chemistry dephosphorization process that the exceeded molybdenum concntrate of phosphorus is carried out, reduce production cost and waste liquid
Generation, economic benefit and obvious environment benefit.
The present invention is realized by using following technical proposals：
A kind of physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore, it is characterised in that step is as follows：
（1）It is broken：Using disintegrating machine by crushing raw ore and screening ,+3mm grades raw ore, which returns, to be crushed, until all raw ores
Granularity reaches -3mm ranks；
（2）Ore grinding：To -3mm the raw ores crushed, add and closed circuit grinding operation is carried out in raw ore grinding attachment, while
Waterglass 500 ~ 1000g/t, Phosphate minerals 250 ~ 800g/t of inhibitor are added in grinding machine, by raw ore be milled to-0.075mm contents 55-
75%；
（3）Roughing flotation operation；
（4）Operation is scanned in flotation；
（5）Roughing molybdenum concntrate is regrinded：Roughing molybdenum concntrate added in roughing molybdenum concntrate Regrinding equipment sulphur inhibitor 100 ~
280g/t, 150 ~ 300g/t of Phosphate minerals inhibitor are regrinded, and are milled to-0.045mm contents 70-95%；
（6）The selected operation of flotation.
Described（3）Roughing flotation operation specifically refers to：To the primary sample by ore grinding, stirring first is sized mixing, and controls ore deposit
Starch concentration 30-45%, after gradually add 240 ~ 480g/t of collecting agent, 60 ~ 120g/t of foaming agent, roughing is carried out in floatation equipment
Operation, the operation obtain roughing molybdenum concntrate and rougher tailings, the roughing molybdenum concntrate raw material selected as further molybdenum, and roughing tail
The raw material that ore deposit is scanned as molybdenum.
Described（4）Flotation is scanned operation and specifically referred to：Working materials are scanned using rougher tailings as molybdenum, is added to and scans
Carry out scanning operation in groove, stirring is sized mixing first, and adds 30 ~ 60g/t of collecting agent, 10 ~ 20g/t of foaming agent, carries out scanning I work
Industry, scan I and obtain scanning I concentrate and scan I mine tailing, scan I concentrate and return in roughing operation, scan I mine tailing and be added to and sweep
Select in II operation, stirring is sized mixing, same to add 15 ~ 40g/t of collecting agent, 5 ~ 10g/t of foaming agent, is carried out scanning II operation, is scanned
II obtains scanning II concentrate and scans II mine tailing, scans II concentrate and returns to and scan in I operation, it is true tailings to scan II mine tailing
1。
Described（6）The selected operation of flotation specifically refers to：Using the roughing molybdenum concntrate after regrinding as raw material, stirring first is adjusted
Slurry, it is added without any medicament and carries out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is made
For further selected raw material, selected I mine tailing scans I operation into essence, sequentially adds 5 ~ 15g/t of collecting agent, 0 ~ 5g/ of foaming agent
T, carry out essence and scan I operation, obtain that essence scans I concentrate and essence scans I mine tailing, essence scans I concentrate and returns to selected I operation, and essence is swept
I mine tailing is selected to scan II operation into essence；5 ~ 15g/t of collecting agent, 0 ~ 5g/t of foaming agent are sequentially added, essence is carried out and scans II operation,
Obtain that essence scans II concentrate and essence scans II mine tailing, essence, which scans II concentrate and returns to essence, scans I operation, and it is final that essence, which scans II mine tailing,
Sulfur-bearing mine tailing 2；
Selected I concentrate enters selected II operation, and stirring first is sized mixing, and adds 60 ~ 120g/t of sulphur inhibitor and suppresses, Ran Houjin
Selected II operation of row, obtains selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns to selected I operation；Selected II essence
Ore deposit enters selected III operation, and being added without any medicament, to enter line blank selected, obtains selected III concentrate and selected III mine tailing, wherein,
Selected III mine tailing returns to selected II operation；Selected III concentrate enters selected IV operation, is equally added without any medicament and enters line blank
It is selected, selected IV concentrate and selected IV mine tailing are obtained, wherein, selected IV mine tailing returns to selected III operation, and selected IV concentrate is most
Whole concentrate.
Described skarn type high phosphorus molybdenum ore refers to without selecting smelting processing, directly phosphorous exceeding from what mining area exploitation came out
0.10% primary molybdenum ore.
Described disintegrating machine refer to the coarse crushings such as the various jaw crushers, double-roll crusher, high-pressure roller mill of industrial type,
In broken, fine crushing device one or more kinds of equipment therein combinations.
Described raw ore grinding attachment refers to that the various autogenous tumbling mills of industrial type, semi-autogenous mill, rod mill, ball mill etc. are set
The combination of standby one or more kinds of equipment therein.
Described roughing molybdenum concntrate Regrinding equipment refers to the equipment such as the various rod mills of industrial type, ball mill therein one
The combination of kind or two or more equipment.
Described floatation equipment refers to one or both of floatation equipments such as the flotation device of various industrial types, flotation column
The combination of above equipment.
Described sulphur inhibitor refer to the containing sulfur minerals such as pyrite, magnetic iron ore have compared with high inhibition ability it is organic or
Inorganic inhibitor, such as common lime, vulcanized sodium, sodium sulfite, sodium pyrosulfite, sodium humate, calcium hypochlorite, polyhydroxy are yellow
The combination of one or more medicaments in the medicaments such as the organic suppression sulphur medicament of ortho acid salt thiosalt.
Described Phosphate minerals inhibitor refers to there is better inhibition effect to have the phosphorus ore containings such as apatite, fluor-apatite
Machine or inorganic inhibitor, such as calgon, sodium tripolyphosphate, sodium polyphosphate, sodium pyrophosphate, low-molecular-weight polypropylene acid
The combination of one or more medicaments in the medicaments such as the bipolymer of sodium, low molecular weight propylene acid and maleic anhydride.
Described collector and frother refers to the industrial collecting such as the hydrocarbon oils such as common kerosene, diesel oil, transformer oil, aromatic hydrocarbons
Agent, 2#Oil, terpenic oil, mixed fatty alcohol, methyl isobutyl carbinol（MIBC）, ether alcohol class, the industrial foaming agent such as phenols, or collecting
The combination medicament that agent and foaming agent have compounded.
Compared with prior art, what the present invention was reached has the beneficial effect that：
（1）Due to the physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore proposed by the present invention, by -3mm raw ores
Waterglass and Phosphate minerals inhibitor are added simultaneously in grinding process, the mineral particle surface for making it constantly newly be dissociateed with ore grinding
Contact in time and in the selective absorption of hydrophilic gangue mineral surface, scattered and suppression as early as possible is realized to thin mud and gangue mineral
System, covering and the parcel of fine-grained gangue Mineral pairs molybdenite mineral are reduced, be advantageous to the neutral oil collecting agent of postorder addition to brightness
Effective collecting of molybdenum ore mineral, reduce the apatite and its carried secretly in the molybdenite oil agglomerate formed during neutral oil collecting molybdenite
Its gangue mineral, so as to obtain phosphorous relatively low roughing molybdenum concntrate.
（2）Due to the physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore proposed by the present invention, roughing molybdenum concntrate is carried out
During Regrinding, while Phosphate minerals inhibitor and sulphur inhibitor are added, first, by molybdenite mineral with including Phosphate minerals, pyrite
The further ore grinding dissociation of various gangue minerals Deng including, second, the molybdenite oil destroyed by ore grinding in roughing molybdenum concntrate is poly-
Group, discharges the wherein Phosphate minerals of package clip band, pyrite and other gangue minerals, and the medicament being added in time disperses
And suppression, it can be separated by follow-up selected operation, reach drop phosphorus and improve the purpose of molybdenum concentrate grade.
（3）Due to the physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore proposed by the present invention, can be selected by physics
The phosphorous high-quality molybdenum concntrate up to standard of the direct output of miner's skill, so no longer needing to carry out special chemical dephosphorization process, is avoided
The consumption of raw material, reduces production cost, while avoid the generation of poisonous and harmful metallurgical waste liquid in refined dephosphorization process.
Novel technique clean and effective, economical rationality, megatechnics transformation and industrialization are easily realized, had very significant economical
Benefit and social benefit.
Brief description of the drawings
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein：
Fig. 1 is the process chart of the present invention.
Embodiment
Embodiment 1
Be 0.13% using Mo contents, the phosphorous molybdenum ore of P content 0.12% as raw material, using the present invention technology, enter
Row following steps, such as Fig. 1：
（1）It is broken：Using disintegrating machine by crushing raw ore and screening ,+3mm grades raw ore, which returns, to be crushed, until all raw ores
Granularity reaches -3mm ranks.
（2）Ore grinding：To -3mm the raw ores crushed, closed circuit grinding operation is carried out using rod mill or ball mill.Exist simultaneously
Inhibitor waterglass 600g/t, calgon 400g/t are added in grinding machine, raw ore is milled to -0.075mm contents 61.0%.
（3）Roughing flotation operation：To by ore grinding primary sample, first stirring size mixing, control pulp density 35%, after by
Secondary addition kerosene 240g/t, 2#Oily 60g/t, roughing operation is carried out in flotation device.The operation obtains roughing molybdenum concntrate and roughing
Mine tailing, the roughing molybdenum concntrate raw material selected as further molybdenum, and the raw material that rougher tailings is scanned as molybdenum.
（4）Operation is scanned in flotation：Working materials are scanned using rougher tailings as molybdenum, is added in scavenger flotation cell and carries out scanning work
Industry.Stirring is sized mixing first, and adds kerosene 40g/t, 2#Oily 10g/t, carry out scanning I operation, scan I obtain scanning I concentrate and
I mine tailing is scanned, I concentrate is scanned and returns in roughing operation, I mine tailing is scanned and is added to and scan in II operation, stirring is sized mixing, equally
Add kerosene 20g/t, 2#Oily 5g/t, carry out scanning II operation, scan II and obtain scanning II concentrate and scan II mine tailing, scan II
Concentrate, which returns to, to be scanned in I operation, and it is true tailings 1 to scan II mine tailing.
（5）Roughing molybdenum concntrate is regrinded：Roughing molybdenum concntrate adds sodium humate 150g/t, six inclined in rod mill or ball mill
Sodium phosphate 200g/t is regrinded, and is milled to -0.045mm contents 90.1%.
（6）The selected operation of flotation：Using the roughing molybdenum concntrate after regrinding as raw material, stirring first is sized mixing, and is added without any
Medicament carries out selected I operation.Selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as further selected
Raw material, selected I mine tailing scan I operation into essence.Sequentially add kerosene 15g/t, 2#Oily 5g/t, carry out essence and scan I operation, obtain
Essence scans I concentrate and essence scans I mine tailing, and essence scans I concentrate and returns to selected I operation, and essence scans I mine tailing and scans II work into essence
Industry；Sequentially add kerosene 15g/t, 2#Oily 5g/t, carry out essence and scan II operation, obtain that essence scans II concentrate and essence scans II tail
Ore deposit, essence scan II concentrate return essence and scan I operation, and it is final sulfur-bearing mine tailing 2 that essence, which scans II mine tailing,.
Selected I concentrate enters selected II operation.Stirring is sized mixing first, is added sodium humate 60g/t and is suppressed, then carries out essence
II operation is selected, obtains selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns to selected I operation；Selected II concentrate enters
Enter selected III operation, being added without any medicament, to enter line blank selected, obtains selected III concentrate and selected III mine tailing, wherein, it is selected
III mine tailing returns to selected II operation；Selected III concentrate enters selected IV operation, and being equally added without any medicament, to enter line blank selected,
Selected IV concentrate and selected IV mine tailing are obtained, wherein, selected IV mine tailing returns to selected III operation, and selected IV concentrate is final essence
Ore deposit.Final concentrate Mo grades 55.87%, the Mo rate of recovery 86.96%, impurity P content 0.013%.
Embodiment 2
Be 0.12% using Mo contents, the phosphorous molybdenum ore of P content 0.18% as raw material, using the present invention technology, enter
Row following steps, such as Fig. 1：
（1）It is broken：Using disintegrating machine by crushing raw ore and screening ,+3mm grades raw ore, which returns, to be crushed, until all raw ores
Granularity reaches -3mm ranks.
（2）Ore grinding：To -3mm the raw ores crushed, closed circuit grinding operation is carried out using rod mill or ball mill, while
Waterglass 800g/t, the bipolymer 400g/t of low molecular weight propylene acid and maleic anhydride are added in grinding machine, by raw ore
It is milled to -0.075mm contents 71.5%.
（3）Roughing flotation operation：To by ore grinding primary sample, first stirring size mixing, control pulp density 31%, after by
Secondary addition kerosene 280g/t, 2#Oily 70g/t, roughing operation is carried out in flotation device.The operation obtains roughing molybdenum concntrate and roughing
Mine tailing, the roughing molybdenum concntrate raw material selected as further molybdenum, and the raw material that rougher tailings is scanned as molybdenum.
（4）Operation is scanned in flotation：Working materials are scanned using rougher tailings as molybdenum, is added in scavenger flotation cell and carries out scanning work
Industry.Stirring is sized mixing first, and adds kerosene 30g/t, 2#Oily 10g/t, carry out scanning I operation, scan I obtain scanning I concentrate and
I mine tailing is scanned, I concentrate is scanned and returns in roughing operation, I mine tailing is scanned and is added to and scan in II operation, stirring is sized mixing, equally
Add kerosene 15g/t, 2#Oily 3g/t, carry out scanning II operation, scan II and obtain scanning II concentrate and scan II mine tailing, scan II
Concentrate, which returns to, to be scanned in I operation, and it is true tailings 1 to scan II mine tailing.
（5）Roughing molybdenum concntrate is regrinded：Roughing molybdenum concntrate added in rod mill or ball mill calcium hypochlorite 170g/t, low point
The bipolymer 200g/t of son amount acrylic acid and maleic anhydride is regrinded, and is milled to -0.045mm contents 93.2%.
（6）The selected operation of flotation：Using the roughing molybdenum concntrate after regrinding as raw material, stirring first is sized mixing, and is added without any
Medicament carries out selected I operation.Selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as further selected
Raw material, selected I mine tailing scan I operation into essence.Sequentially add kerosene 10g/t, 2#Oily 3g/t, carry out essence and scan I operation, obtain
Essence scans I concentrate and essence scans I mine tailing, and essence scans I concentrate and returns to selected I operation, and essence scans I mine tailing and scans II work into essence
Industry；Sequentially add kerosene 10g/t, 2#Oily 3g/t, carry out essence and scan II operation, obtain that essence scans II concentrate and essence scans II tail
Ore deposit, essence scan II concentrate return essence and scan I operation, and it is final sulfur-bearing mine tailing 2 that essence, which scans II mine tailing,.
Selected I concentrate enters selected II operation.Stirring is sized mixing first, is added calcium hypochlorite 80g/t and is suppressed, then carries out essence
II operation is selected, obtains selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns to selected I operation；Selected II concentrate enters
Enter selected III operation, being added without any medicament, to enter line blank selected, obtains selected III concentrate and selected III mine tailing, wherein, it is selected
III mine tailing returns to selected II operation；Selected III concentrate enters selected IV operation, and being equally added without any medicament, to enter line blank selected,
Selected IV concentrate and selected IV mine tailing are obtained, wherein, selected IV mine tailing returns to selected III operation, and selected IV concentrate is final essence
Ore deposit.Final concentrate Mo grades 52.36%, the Mo rate of recovery 88.47%, impurity P content 0.011%.
Embodiment 3
Be 0.14% using Mo contents, the phosphorous molybdenum ore of P content 0.17% as raw material, using the present invention technology, enter
Row following steps, such as Fig. 1：
（1）It is broken：Using disintegrating machine by crushing raw ore and screening ,+3mm grades raw ore, which returns, to be crushed, until all raw ores
Granularity reaches -3mm ranks.
（2）Ore grinding：To -3mm the raw ores crushed, closed circuit grinding operation is carried out using rod mill or ball mill, while
Waterglass 700g/t, low molecular weight sodium polyacrylate 500g/t are added in grinding machine, raw ore is milled to -0.075mm contents 73.8%.
（3）Roughing flotation operation：To by ore grinding primary sample, first stirring size mixing, control pulp density 34%, after by
Secondary addition kerosene 360g/t, 2#Oily 80g/t, roughing operation is carried out in flotation device.The operation obtains roughing molybdenum concntrate and roughing
Mine tailing, the roughing molybdenum concntrate raw material selected as further molybdenum, and the raw material that rougher tailings is scanned as molybdenum.
（4）Operation is scanned in flotation：Working materials are scanned using rougher tailings as molybdenum, is added in scavenger flotation cell and carries out scanning work
Industry.Stirring is sized mixing first, and adds kerosene 60g/t, 2#Oily 20g/t, carry out scanning I operation, scan I obtain scanning I concentrate and
I mine tailing is scanned, I concentrate is scanned and returns in roughing operation, I mine tailing is scanned and is added to and scan in II operation, stirring is sized mixing, equally
Add kerosene 30g/t, 2#Oily 10g/t, carry out scanning II operation, scan II and obtain scanning II concentrate and scan II mine tailing, scan
II concentrate, which returns to, to be scanned in I operation, and it is true tailings 1 to scan II mine tailing.
（5）Roughing molybdenum concntrate is regrinded：Roughing molybdenum concntrate adds lime 300g/t, low molecule amount in rod mill or ball mill
Sodium Polyacrylate 150g/t is regrinded, and is milled to -0.045mm contents 94.9%.
（6）The selected operation of flotation：Using the roughing molybdenum concntrate after regrinding as raw material, stirring first is sized mixing, and is added without any
Medicament carries out selected I operation.Selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as further selected
Raw material, selected I mine tailing scan I operation into essence.Sequentially add kerosene 15g/t, 2#Oily 5g/t, carry out essence and scan I operation, obtain
Essence scans I concentrate and essence scans I mine tailing, and essence scans I concentrate and returns to selected I operation, and essence scans I mine tailing and scans II work into essence
Industry；Sequentially add kerosene 15g/t, 2#Oily 5g/t, carry out essence and scan II operation, obtain that essence scans II concentrate and essence scans II tail
Ore deposit, essence scan II concentrate return essence and scan I operation, and it is final sulfur-bearing mine tailing 2 that essence, which scans II mine tailing,.
Selected I concentrate enters selected II operation.Stirring is sized mixing first, is added lime 120g/t and is suppressed, then carries out selected
II operation, selected II concentrate and selected II mine tailing are obtained, wherein selected II mine tailing returns to selected I operation；Selected II concentrate enters
Selected III operation, being added without any medicament, to enter line blank selected, obtains selected III concentrate and selected III mine tailing, wherein, selected III
Mine tailing returns to selected II operation；Selected III concentrate enters selected IV operation, and being equally added without any medicament, to enter line blank selected, obtains
To selected IV concentrate and selected IV mine tailing, wherein, selected IV mine tailing returns to selected III operation, and selected IV concentrate is final concentrate.
Final concentrate Mo grades 54.45%, the Mo rate of recovery 86.54%, impurity P content 0.013%.
Claims (7)
1. a kind of physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore, it is characterised in that step is as follows：
（1）It is broken：Using disintegrating machine by crushing raw ore and screening ,+3mm grades raw ore, which returns, to be crushed, until all original ore sizes
Reach -3mm ranks；
（2）Ore grinding：To -3mm the raw ores crushed, add and closed circuit grinding operation is carried out in raw ore grinding attachment, while in grinding machine
500 ~ 1000g/t of middle addition waterglass, Phosphate minerals 250 ~ 800g/t of inhibitor ,-0.075mm contents 55-75% are milled to by raw ore；
（3）Roughing flotation operation；
（4）Operation is scanned in flotation；
（5）Roughing molybdenum concntrate is regrinded：Roughing molybdenum concntrate added in roughing molybdenum concntrate Regrinding equipment 100 ~ 280g/t of sulphur inhibitor,
150 ~ 300g/t of Phosphate minerals inhibitor is regrinded, and is milled to-0.045mm contents 70-95%；
（6）The selected operation of flotation；
Described skarn type high phosphorus molybdenum ore refer to without select smelting processing, directly from mining area exploitation come out it is phosphorous more than 0.10%
Primary molybdenum ore；
Described sulphur inhibitor refers to one in lime, vulcanized sodium, sodium sulfite, sodium pyrosulfite, sodium humate, calcium hypochlorite
The combination of kind or various medicaments；
Described Phosphate minerals inhibitor refer to one kind in calgon, sodium tripolyphosphate, sodium polyphosphate, sodium pyrophosphate or
The combination of various medicaments.
A kind of 2. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 1, it is characterised in that：Institute
State（3）Roughing flotation operation specifically refers to：To the primary sample by ore grinding, stirring first is sized mixing, and control pulp density 30-
45%, after gradually add 240 ~ 480g/t of collecting agent, 60 ~ 120g/t of foaming agent, in floatation equipment carry out roughing operation, the work
Industry obtains roughing molybdenum concntrate and rougher tailings, the roughing molybdenum concntrate raw material selected as further molybdenum, and rougher tailings is as molybdenum
The raw material scanned.
A kind of 3. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 2, it is characterised in that：Institute
State（4）Flotation is scanned operation and specifically referred to：Working materials are scanned using rougher tailings as molybdenum, is added in scavenger flotation cell and is swept
Industry is elected to be, stirring is sized mixing first, and adds 30 ~ 60g/t of collecting agent, 10 ~ 20g/t of foaming agent, carries out scanning I operation, is scanned I and is obtained
I concentrate and I mine tailing is scanned to scanning, scans I concentrate and return in roughing operation, scanned I mine tailing and be added to and scan in II operation,
Stirring is sized mixing, same to add 15 ~ 40g/t of collecting agent, 5 ~ 10g/t of foaming agent, is carried out scanning II operation, is scanned II and obtain scanning II
Concentrate and II mine tailing is scanned, scan II concentrate and return to and scan in I operation, it is true tailings 1 to scan II mine tailing.
A kind of 4. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 3, it is characterised in that：Institute
State（6）The selected operation of flotation specifically refers to：Using the roughing molybdenum concntrate after regrinding as raw material, stirring first is sized mixing, and is added without
Any medicament carries out selected I operation, and selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as further essence
The raw material of choosing, selected I mine tailing scan I operation into essence, sequentially add 5 ~ 15g/t of collecting agent, 0 ~ 5g/t of foaming agent, carry out essence and sweep
I operation is selected, obtains that essence scans I concentrate and essence scans I mine tailing, essence scans I concentrate and returns to selected I operation, and essence scans the entrance of I mine tailing
Essence scans II operation；5 ~ 15g/t of collecting agent, 0 ~ 5g/t of foaming agent are sequentially added, essence is carried out and scans II operation, obtain essence and scan II
Concentrate and essence scan II mine tailing, and essence scans II concentrate return essence and scans I operation, and it is final sulfur-bearing mine tailing 2 that essence, which scans II mine tailing,；
Selected I concentrate enters selected II operation, and stirring first is sized mixing, and adds 60 ~ 120g/t of sulphur inhibitor and suppresses, then carries out essence
II operation is selected, obtains selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns to selected I operation；Selected II concentrate enters
Enter selected III operation, being added without any medicament, to enter line blank selected, obtains selected III concentrate and selected III mine tailing, wherein, it is selected
III mine tailing returns to selected II operation；Selected III concentrate enters selected IV operation, and being equally added without any medicament, to enter line blank selected,
Selected IV concentrate and selected IV mine tailing are obtained, wherein, selected IV mine tailing returns to selected III operation, and selected IV concentrate is final essence
Ore deposit.
A kind of 5. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 4, it is characterised in that：Institute
The disintegrating machine stated refer to one or both of various jaw crushers, double-roll crusher, high-pressure roller mill of industrial type with
The combination of upper equipment.
A kind of 6. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 4, it is characterised in that：Institute
The raw ore grinding attachment stated refers to one or both of the various autogenous tumbling mills of industrial type, semi-autogenous mill, rod mill, ball mill
The combination of above equipment.
A kind of 7. physical upgrading method for reducing phosphorus of skarn type high phosphorus molybdenum ore according to claim 4, it is characterised in that：Institute
The roughing molybdenum concntrate Regrinding equipment stated refers to one or both of the various rod mills of industrial type, ball mill above equipment
Combination.
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| CN105903552B (en) * | 2016-04-26 | 2021-03-12 | 中南大学 | Beneficiation method for efficiently recovering micro-fine particle molybdenum ore |
| CN106552715A (en) * | 2016-11-02 | 2017-04-05 | 昆明理工大学 | It is a kind of that the method that sphalerite is reclaimed in mine tailing is separated from lead sulfide mixed concentrate |
| CN107716091B (en) * | 2017-10-30 | 2020-04-07 | 中国黄金集团中原矿业有限公司 | Tungsten oxide molybdenum pre-fine scavenging process |
| CN111330738A (en) * | 2018-12-19 | 2020-06-26 | 中蓝连海设计研究院有限公司 | Ore grinding flotation method for phosphorite direct flotation |
| CN112264197B (en) * | 2020-09-22 | 2022-11-11 | 铜陵有色金属集团股份有限公司 | Combined inhibitor for high-magnetic pyrite type copper-sulfur ore and beneficiation method thereof |
| CN112474057B (en) * | 2020-11-09 | 2022-08-05 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for desulfurizing sulfur-containing vanadium-titanium-iron ore concentrate and recovering sulfur-cobalt ore concentrate |
| CN114515651A (en) * | 2022-01-24 | 2022-05-20 | 宜昌邦普循环科技有限公司 | Compound inhibitor and preparation method and application thereof |
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