CN105413854A - Beneficiation method for high-oxidation-rate copper-molybdenum paragenic ore - Google Patents
Beneficiation method for high-oxidation-rate copper-molybdenum paragenic ore Download PDFInfo
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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
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
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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
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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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention discloses a beneficiation method of high-oxidation-rate copper-molybdenum paragenic 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 1000-3000 g/t of activating agent and 250-900 g/t of vulcanizing agent into a grinding machine to grind the raw ore to the content of 55-80% of-0.075 mm; (3) performing flotation roughing operation; (4) performing flotation scavenging operation; (5) flotation and fine selection operation; (6) and (5) performing strong magnetic separation. By adopting the method, the copper oxide minerals and the molybdenum oxide minerals in the copper-molybdenum paragenic ore with high oxidation rate can be subjected to beneficiation, enrichment and recovery to obtain high-quality qualified copper concentrate and a relatively enriched molybdenum middling, and the molybdenum middling can be used as a raw material for producing ammonium molybdate products by chemical wet leaching, so that molybdenum oxide resources in the ore can be recycled.
Description
Technical field
The present invention relates to the beneficiation enrichment technology field of cupric oxide molybdenum symbiotic ore, especially a kind of beneficiation method of high oxidation rate copper molybdenum symbiotic ore, the present invention is applicable to the beneficiation enrichment of various high oxidation rate cupric oxide molybdenum symbiotic ore.
Background technology
China's copper, molybdenum ore resource are very abundant, end for the end of the year 2014, and copper ore resource amount reaches 9,111 ten thousand tons, and Mo resource reserves reach 2,826 ten thousand tons, are the Dominant Mineral Resources of China.The principle that China is poor, easy first and difficult later after usually following getting rich first to the exploitation of mineral resources, along with the high speed development of modern industry, limited easily select copper sulfide, molybdenum ore resource peters out, remaining copper, molybdenum ore mostly are the ore resource of the higher very difficult enrichment of oxygenation efficiency.
The principle of the industrial cupric oxide ore for partial oxidation and the many foundations of oxidizing molybdenum ore " after first sulphur oxygen ", the copper sulfide in first flotation of ores and molybdenum sulfide, then the method for flotation after the oxide ore sulfuration in mine tailing is reclaimed it.
The copper molybdenum symbiotic ore of high oxidation rate, refer to that molybdenite and the chalcopyrite of symbiosis experienced by wind erosion, drench with rain in very long geological epoch, the top of Cu-Mo separation or selective oxidation after sunshine, molybdenum sulfide part or major part are oxidized to molybdine molybdite or molybdate ore, and copper sulfide part or major part are oxidized to secondary copper sulfide or cupric oxide ore.
Cupric oxide ore many employings floatation and chemical method are processed, floatation is the main method of process cupric oxide ore, be applicable to mineral composition simple, the uncomplicated cupric oxide ore of character, the focus of its research concentrates on the selection of the most efficient flotation reagents and the control of sulfidation; The cupric oxide ore that should not adopt floatation or adopt floatation process index poor, adopt chemical Treatment more, if publication number is 103128004A, publication date is a kind of method that the Chinese patent literature on June 5th, 2013 discloses copper sulfide molybdenum bulk concentrate floatation FLOTATION SEPARATION, it carries out according to the following steps: choosing of (1) copper molybdenum bulk concentrate floatation, sizes mixing; (2) in ore pulp, add adjustment inhibitor waterglass sequentially, the high efficiency selected inhibitor hydroxamic acid starch of copper, vulcanized sodium, molybdenum sulfide mineral collector kerosene, foaming agent 2# oil (terpenic oil) carries out molybdenum and roughly select operation, obtain molybdenum rough concentrate and molybdenum rougher tailings, rougher tailings adds kerosene and 2# oil to carry out molybdenum and scans, scanning number of times is 1 ~ 3 time, obtain molybdenum flotation tailing and be copper concentrate, scavenger concentrate order is back to last flotation operation; (3) molybdenum rough concentrate adds copper mineral inhibitor hydroxamic acid starch and vulcanized sodium, and concentration times is 5 ~ 9 times, obtains molybdenum concntrate, and molybdenum selected chats order is back to last flotation operation.The method is applicable to that disseminated grain size is thin, cupric is low, argillization is serious, ore structures and composition change greatly, the cupric oxide ore of the feature such as sulfuration is difficult.
Floatation and chemical method is adopted to process for molybdenum oxide ore as much, floatation is applicable to that mineral composition is simple, the uncomplicated molybdenum oxide ore based on molybdine molybdite of character, and the molybdenum oxide mineral that chemical method is applicable to the poor molybdine molybdite class mineral of flotation effect and exists with molybdic acid salt mineral forms such as molybdenum calcium ore deposit, wulfenite, molybdic acid iron ores, such ore carries out enrichment owing to can not adopt floatation to it, many directly employing chemical method wet-leachings, then output ammonium molybdate or molybdenum oxide product.This technique, due to Chemical Leaching direct without beneficiation enrichment, considerably increases the generation of the raw-material consumption such as soda acid and waste residue and waste liquid, adds production cost, reduce the productivity effect of enterprise, simultaneously easily brings severe contamination to environment.
Summary of the invention
Complicated for the mineral composition of the type high oxidation rate copper molybdenum symbiotic ore, copper molybdenum oxygenation efficiency is high and molybdenum mainly causes being difficult to the technical barrier by floatation process enrichment with the existence of molybdenum calcium ore deposit form, the present invention proposes a kind of beneficiation method for the type high oxidation rate copper molybdenum symbiotic ore, adopt this method, all beneficiation enrichment recovery can be carried out to the copper oxide mineral in the type high oxidation rate copper molybdenum symbiotic ore and molybdenum oxide mineral, obtain the molybdenum chats of the qualified copper concentrate enrichment relative to of high-quality, this molybdenum chats can be used as wet chemical and leaches the raw material producing ammonium molybdate product, the molybdenum oxide resource in ore is made to be recycled utilization.
The present invention realizes by adopting following technical proposals:
A beneficiation method for high oxidation rate copper molybdenum symbiotic ore, is characterized in that step is as follows:
(1) broken: adopt disintegrating machine by crushing raw ore and screening ,+3mm grade raw ore returns fragmentation, until all original ore sizes reach-3mm rank;
(2) ore grinding: to the good-3mm raw ore of fragmentation, add in raw ore grinding attachment and carry out closed circuit grinding operation, adds activator 1000 ~ 3000g/t, vulcanizing agent 250 ~ 900g/t simultaneously, raw ore is milled to-0.075mm content 55 ~ 80% in grinding machine;
(3) roughing flotation operation;
(4) operation is scanned in flotation;
(5) the selected operation of flotation;
(6) high intensity magnetic separation operation.
Described (3) roughing flotation operation specifically refers to: to the primary sample through ore grinding, first stir and size mixing, control pulp density 25 ~ 40%, after successively add waterglass 700 ~ 1200g/t, collecting agent 100 ~ 250g/t, foaming agent 10 ~ 30g/t, carry out roughly selecting I operation in floatation equipment, this operation obtains roughly selecting I concentrate and roughly selecting I mine tailing, roughly selecting I mine tailing joins in roughing flotation II operation, stirring is sized mixing, add collecting agent 50 ~ 100g/t equally, foaming agent 5 ~ 15g/t, carry out roughing flotation II operation, obtain roughly selecting II concentrate and roughly selecting II mine tailing, roughly select II concentrate and roughly select I concentrate merging and enter the selected operation of flotation, roughly select II mine tailing to enter flotation and scan operation.
Described (4) flotation is scanned operation and is specifically referred to: scan working materials to roughly select II mine tailing as molybdenum flotation, join in scavenger flotation cell and carry out scanning operation, first stir and size mixing, and add collecting agent 25 ~ 60g/t, foaming agent 0 ~ 10g/t, carry out scanning I operation, scan I to obtain scanning I concentrate and scanning I mine tailing, scan I concentrate to turn back to and roughly select in operation, scan I mine tailing to join and scan in II operation, stirring is sized mixing, add collecting agent 10 ~ 30g/t equally, foaming agent 0 ~ 10g/t, carry out scanning II operation, scan II to obtain scanning II concentrate and scanning II mine tailing, scan II concentrate to turn back to and scan in I operation, scan II mine tailing and enter high intensity magnetic separation operation.
The described selected operation of (5) flotation specifically refers to: to roughly select I concentrate and to roughly select II concentrate as raw material, first stir and size mixing, and add waterglass 100 ~ 300g/t, carry out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, selected I concentrate is as the raw material of selected II operation, and selected I mine tailing turns back to roughing flotation operation; Selected I concentrate enters selected II operation, first stirs and sizes mixing, and not adding any medicament, to carry out blank selected, and obtain selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns selected I operation; The final copper concentrate of selected II concentrate.
Described (6) high intensity magnetic separation operation specifically refers to: scan operation mine tailing for raw material with flotation, carry out high intensity magnetic separation operation; The condition of high intensity magnetic separation operation is: magnetic field intensity 0.8-1.8T, ore pulp mass percentage concentration 20-35%, high intensity magnetic separation operation obtains the high intensity magnetic separation mine tailing of nonmagnetic high intensity magnetic separation concentrate and weak magnetic, wherein, high intensity magnetic separation concentrate is final molybdenum chats product, and high intensity magnetic separation mine tailing is true tailings.
Described high oxidation rate copper molybdenum symbiotic ore refers to that copper, molybdenum oxygenation efficiency are all more than 80%, and molybdenum oxide is mainly with the copper-molybdenum ore that the forms such as molybdenum calcium ore deposit, wulfenite, wulfenite exist.
Described disintegrating machine refer to industrial type the coarse crushing such as various jaw crushers, double-roll crusher, high-pressure roller mill, in the combination of broken, fine crushing device one or more equipment wherein.
Described raw ore grinding attachment refers to the combination of equipment one or more equipment wherein such as various autogenous tumbling mills, semi-autogenous mill, rod mill, ball mill of industrial type.
Described floatation equipment refers to the combination of one or more equipment in the floatation equipment such as flotation device, flotation column of various industrial type.
The equipment of described high intensity magnetic separation operation is Wet-type strong magnetic separator.Be specifically as follows the combination of one or more equipment in flat ring type intensity magnetic separator, vertical ring type intensity magnetic separator, flat ring type High gradient high intensity magnetic separator or vertical ring type High gradient high intensity magnetic separator.
Described activator refers to the combination of one or more medicaments of ammonium sulfate, ammonium chloride, carbonic hydroammonium, ethylenediamine phosphate, dithiol thio biphosphole, BTA, triethanolamine.
Described vulcanizing agent refers to the combination of one or more medicaments of vulcanized sodium, NaHS, calcium sulfide, sodium polysulfide.
Described collecting agent refers to that oxide mineral collector and sulfide mineral collector form by 1:1 ~ 2 ratio combination, and oxide mineral collector mainly refers to five or nine hydroximic acids, benzyl hydroximic acid, Using Salicyl Hydroximic Acid, enuatrol, oxidized paraffin wax soap, aphthenic acids or styrene phosphoric acid; Sulfide mineral collector mainly refers to butyl xanthate, ethyl xanthate, isopropyl xanthate, isoamyl xanthate, butylamine black powder, diethyldithiocarbamate, second third thiourethane (Z-200) or diethyldithiocarbamate propionitrile ester (ester 105).
Described foaming agent refers to 2
#the combination of industrial foaming agent one or more medicaments wherein such as oil, terpenic oil, mixed fatty alcohol, methyl isobutyl carbinol (MIBC), ether alcohol class, phenols.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
(1) due to the ore dressing new method of the high oxidation rate copper molybdenum symbiotic ore of the present invention's proposition, by adding vulcanizing agent in-3mm raw ore grinding process, its mineral particle surface constantly newly dissociateed with ore grinding being contacted in time, makes it be hydrolyzed the HS of formation
-or S
2-rapid adsorption, at mineral particle surface, presents metal sulfide film coated, strengthens its hydrophobicity; Simultaneously activator add the speed accelerating vulcanization reaction, promote the completeness of reaction, and improve the density of the sulfide film of copper oxide mineral Surface Creation, strengthen the stability of sulfide film.Two kinds of medicament interpolations in grinding machine effectively can reduce covering and the parcel of fine-grained gangue Mineral pairs copper oxide mineral, are conducive to the collecting agent of postorder interpolation to effective collecting of copper oxide mineral, thus can obtain the higher copper concentrate product of copper grade.
(2) due to the ore dressing new method of the high oxidation rate copper molybdenum symbiotic ore of the present invention's proposition, high intensity magnetic separation process is adopted to reclaim molybdenum oxide mineral to nominal group process, the gangue mineral except having weak magnetic in a large number can be thrown, make the molybdenum oxide mineral mainly existed with forms such as molybdenum calcium ore deposits in non magnetic ore, obtain enrichment, obtain the molybdenum chats product of effective enrichment, reach the object effectively reclaiming molybdenum oxide mineral.
(3) due to the ore dressing new method of the high oxidation rate copper molybdenum symbiotic ore of the present invention's proposition, by the molybdenum chats of the qualified copper concentrate of the direct output of physical upgrading technique with relative enrichment, this molybdenum chats can be used as wet chemical and leaches the raw material producing ammonium molybdate product, that greatly can reduce leaching operation enters leaching amount, reduce the raw materials consumptions such as soda acid, reduce production cost and metallurgical liquid and waste slag produced generation, there is very significant economic benefit and social benefit.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is process chart of the present invention.
Detailed description of the invention
embodiment 1
With Cu content be 0.32%, the high oxidation rate copper molybdenum symbiotic ore stone of Mo content 0.25% for raw material, Cu oxygenation efficiency is 95.92%, Mo oxygenation efficiency is 87.50%.Utilize technology of the present invention, carry out following steps, as Fig. 1:
(1) broken: adopt disintegrating machine by crushing raw ore and screening ,+3mm grade raw ore returns fragmentation, until all original ore sizes reach-3mm rank;
(2) ore grinding: to the good-3mm raw ore of fragmentation, adopts rod mill or ball mill to carry out closed circuit grinding operation.In grinding machine, add ammonium sulfate 2000g/t, vulcanized sodium 500g/t simultaneously, raw ore is milled to-0.075mm content 65.0%;
(3) roughing flotation operation; To the primary sample through ore grinding, first stir size mixing, control pulp density 35%, after successively add waterglass 900g/t, five or nine hydroximic acid 75g/t, butyl xanthate 75g/t, 2
#oil 15g/t, carries out roughly selecting I operation in floatation equipment, and this operation obtains roughly selecting I concentrate and roughly selecting I mine tailing, and roughly select I mine tailing and join in roughing flotation II operation, stirring is sized mixing, and adds five or nine hydroximic acid 40g/t, butyl xanthate 40g/t, 2 equally
#oil 10g/t, carries out roughing flotation II operation, obtains roughly selecting II concentrate and roughly selects II mine tailing, roughly selects II concentrate and roughly select I concentrate to merge and enter the selected operation of flotation, roughly selects II mine tailing and enters flotation and scan operation;
(4) operation is scanned in flotation; Scan working materials to roughly select II mine tailing as molybdenum flotation, join in scavenger flotation cell and carry out scanning operation, first stir and size mixing, and add five or nine hydroximic acid 20g/t, butyl xanthate 20g/t, 2
#oil 5g/t, carries out scanning I operation, scans I and obtains scanning I concentrate and scanning I mine tailing, scan I concentrate to turn back to and roughly select in operation, scan I mine tailing to join and scan in II operation, stirring is sized mixing, and adds five or nine hydroximic acid 10g/t, butyl xanthate 10g/t, 2 equally
#oil 3g/t, carries out scanning II operation, scans II and obtains scanning II concentrate and scan II mine tailing, scans II concentrate and turns back to and scan in I operation, scan II mine tailing and enter high intensity magnetic separation operation.
(5) the selected operation of flotation; To roughly select I concentrate and to roughly select II concentrate as raw material, first stir and size mixing, and add waterglass 150g/t, carry out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as the raw material of selected II operation, and selected I mine tailing turns back to roughing flotation operation.Selected I concentrate enters selected II operation, first stirs and sizes mixing, and not adding any medicament, to carry out blank selected, and obtain selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns selected I operation; The final copper concentrate of selected II concentrate.
(6) high intensity magnetic separation operation: scan operation mine tailing for raw material with flotation, carry out high intensity magnetic separation operation.Controlling magnetic field intensity 1.5T, ore pulp mass percentage concentration 30%.High intensity magnetic separation operation obtains the high intensity magnetic separation mine tailing of nonmagnetic high intensity magnetic separation concentrate and weak magnetic, and wherein, high intensity magnetic separation concentrate is final molybdenum chats, and high intensity magnetic separation mine tailing is true tailings.
Final copper concentrate Cu grade 21.37%, the Cu rate of recovery 74.81%; Molybdenum chats productive rate 21.83%, Mo grade 0.90%, the Mo rate of recovery 78.59%.
embodiment 2
With Cu content be 0.35%, the high oxidation rate copper molybdenum symbiotic ore stone of Mo content 0.22% for raw material, Cu oxygenation efficiency is 90.45%, Mo oxygenation efficiency is 85.37%.Utilize technology of the present invention, carry out following steps, as Fig. 1:
(1) broken: adopt disintegrating machine by crushing raw ore and screening ,+3mm grade raw ore returns fragmentation, until all original ore sizes reach-3mm rank;
(2) ore grinding: to the good-3mm raw ore of fragmentation, adopts rod mill or ball mill to carry out closed circuit grinding operation.In grinding machine, add ethylenediamine phosphate 2300g/t, sodium polysulfide 720g/t simultaneously, raw ore is milled to-0.075mm content 75.0%;
(3) roughing flotation operation; To the primary sample through ore grinding, first stir size mixing, control pulp density 32%, after successively add waterglass 1100g/t, benzyl hydroximic acid 90g/t, butylamine black powder 90g/t, 2
#oil 25g/t, carries out roughly selecting I operation in floatation equipment, and this operation obtains roughly selecting I concentrate and roughly selecting I mine tailing, and roughly select I mine tailing and join in roughing flotation II operation, stirring is sized mixing, and adds benzyl hydroximic acid 50g/t, butylamine black powder 50g/t, 2 equally
#oil 15g/t, carries out roughing flotation II operation, obtains roughly selecting II concentrate and roughly selects II mine tailing, roughly selects II concentrate and roughly select I concentrate to merge and enter the selected operation of flotation, roughly selects II mine tailing and enters flotation and scan operation;
(4) operation is scanned in flotation; Scan working materials to roughly select II mine tailing as molybdenum flotation, join in scavenger flotation cell and carry out scanning operation, first stir and size mixing, and add benzyl hydroximic acid 30g/t, butylamine black powder 30g/t, 2
#oil 8g/t, carries out scanning I operation, scans I and obtains scanning I concentrate and scanning I mine tailing, scan I concentrate to turn back to and roughly select in operation, scan I mine tailing to join and scan in II operation, stirring is sized mixing, and adds benzyl hydroximic acid 15g/t, butylamine black powder 15g/t, 2 equally
#oil 5g/t, carries out scanning II operation, scans II and obtains scanning II concentrate and scan II mine tailing, scans II concentrate and turns back to and scan in I operation, scan II mine tailing and enter high intensity magnetic separation operation.
(5) the selected operation of flotation; To roughly select I concentrate and to roughly select II concentrate as raw material, first stir and size mixing, and add waterglass 200g/t, carry out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as the raw material of selected II operation, and selected I mine tailing turns back to roughing flotation operation.Selected I concentrate enters selected II operation, first stirs and sizes mixing, and not adding any medicament, to carry out blank selected, and obtain selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns selected I operation; The final copper concentrate of selected II concentrate.
(6) high intensity magnetic separation operation: scan operation mine tailing for raw material with flotation, carry out high intensity magnetic separation operation.Controlling magnetic field intensity 1.5T, ore pulp mass percentage concentration 25%.High intensity magnetic separation operation obtains the high intensity magnetic separation mine tailing of nonmagnetic high intensity magnetic separation concentrate and weak magnetic, and wherein, high intensity magnetic separation concentrate is final molybdenum chats, and high intensity magnetic separation mine tailing is true tailings.
Final copper concentrate Cu grade 22.56%, the Cu rate of recovery 75.92%; Molybdenum chats productive rate 20.45%, Mo grade 0.87%, the Mo rate of recovery 80.87%.
embodiment 3
With Cu content be 0.27%, the high oxidation rate copper molybdenum symbiotic ore stone of Mo content 0.21% for raw material, Cu oxygenation efficiency is 92.45%, Mo oxygenation efficiency is 89.97%.Utilize technology of the present invention, carry out following steps, as Fig. 1:
(1) broken: adopt disintegrating machine by crushing raw ore and screening ,+3mm grade raw ore returns fragmentation, until all original ore sizes reach-3mm rank;
(2) ore grinding: to the good-3mm raw ore of fragmentation, adopts rod mill or ball mill to carry out closed circuit grinding operation.In grinding machine, add BTA 2000g/t, NaHS 500g/t simultaneously, raw ore is milled to-0.075mm content 70.0%;
(3) roughing flotation operation; To the primary sample through ore grinding, first stir size mixing, control pulp density 38%, after successively add waterglass 800g/t, Using Salicyl Hydroximic Acid 70g/t, diethyldithiocarbamate 70g/t, 2
#oil 25g/t, carries out roughly selecting I operation in floatation equipment, and this operation obtains roughly selecting I concentrate and roughly selecting I mine tailing, and roughly select I mine tailing and join in roughing flotation II operation, stirring is sized mixing, and adds Using Salicyl Hydroximic Acid 35g/t, diethyldithiocarbamate 35g/t, 2 equally
#oil 15g/t, carries out roughing flotation II operation, obtains roughly selecting II concentrate and roughly selects II mine tailing, roughly selects II concentrate and roughly select I concentrate to merge and enter the selected operation of flotation, roughly selects II mine tailing and enters flotation and scan operation;
(4) operation is scanned in flotation; Scan working materials to roughly select II mine tailing as molybdenum flotation, join in scavenger flotation cell and carry out scanning operation, first stir and size mixing, and add Using Salicyl Hydroximic Acid 18g/t, diethyldithiocarbamate 18g/t, 2
#oil 8g/t, carries out scanning I operation, scans I and obtains scanning I concentrate and scan I mine tailing, scans I concentrate and turns back to and roughly select in operation, and scan I mine tailing and join and scan in II operation, stirring is sized mixing, and adds Using Salicyl Hydroximic Acid 10g/t, diethyldithiocarbamate 10g/t, 2 equally
#oil 4g/t, carries out scanning II operation, scans II and obtains scanning II concentrate and scan II mine tailing, scans II concentrate and turns back to and scan in I operation, scan II mine tailing and enter high intensity magnetic separation operation.
(5) the selected operation of flotation; To roughly select I concentrate and to roughly select II concentrate as raw material, first stir and size mixing, and add waterglass 120g/t, carry out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as the raw material of selected II operation, and selected I mine tailing turns back to roughing flotation operation.Selected I concentrate enters selected II operation, first stirs and sizes mixing, and not adding any medicament, to carry out blank selected, and obtain selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns selected I operation; The final copper concentrate of selected II concentrate.
(6) high intensity magnetic separation operation: scan operation mine tailing for raw material with flotation, carry out high intensity magnetic separation operation.Controlling magnetic field intensity 1.3T, ore pulp mass percentage concentration 25%.High intensity magnetic separation operation obtains the high intensity magnetic separation mine tailing of nonmagnetic high intensity magnetic separation concentrate and weak magnetic, and wherein, high intensity magnetic separation concentrate is final molybdenum chats, and high intensity magnetic separation mine tailing is true tailings.
Final copper concentrate Cu grade 20.97%, the Cu rate of recovery 73.64%; Molybdenum chats productive rate 21.52%, Mo grade 0.82%, the Mo rate of recovery 84.03%.
Claims (10)
1. a beneficiation method for high oxidation rate copper molybdenum symbiotic ore, is characterized in that step is as follows:
(1) broken: adopt disintegrating machine by crushing raw ore and screening ,+3mm grade raw ore returns fragmentation, until all original ore sizes reach-3mm rank;
(2) ore grinding: to the good-3mm raw ore of fragmentation, add in raw ore grinding attachment and carry out closed circuit grinding operation, adds activator 1000 ~ 3000g/t, vulcanizing agent 250 ~ 900g/t simultaneously, raw ore is milled to-0.075mm content 55 ~ 80% in grinding machine;
(3) roughing flotation operation;
(4) operation is scanned in flotation;
(5) the selected operation of flotation;
(6) high intensity magnetic separation operation.
2. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 1, it is characterized in that: described (3) roughing flotation operation specifically refers to: to the primary sample through ore grinding, first stir and size mixing, control pulp density 25 ~ 40%, after successively add waterglass 700 ~ 1200g/t, collecting agent 100 ~ 250g/t, foaming agent 10 ~ 30g/t, carry out roughly selecting I operation in floatation equipment, this operation obtains roughly selecting I concentrate and roughly selecting I mine tailing, roughly selecting I mine tailing joins in roughing flotation II operation, stirring is sized mixing, add collecting agent 50 ~ 100g/t equally, foaming agent 5 ~ 15g/t, carry out roughing flotation II operation, obtain roughly selecting II concentrate and roughly selecting II mine tailing, roughly select II concentrate and roughly select I concentrate merging and enter the selected operation of flotation, roughly select II mine tailing to enter flotation and scan operation.
3. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 2, it is characterized in that: described (4) flotation is scanned operation and specifically referred to: scan working materials to roughly select II mine tailing as molybdenum flotation, join in scavenger flotation cell and carry out scanning operation, first stir and size mixing, and add collecting agent 25 ~ 60g/t, foaming agent 0 ~ 10g/t, carry out scanning I operation, scan I to obtain scanning I concentrate and scanning I mine tailing, scan I concentrate to turn back to and roughly select in operation, scan I mine tailing to join and scan in II operation, stirring is sized mixing, add collecting agent 10 ~ 30g/t equally, foaming agent 0 ~ 10g/t, carry out scanning II operation, scan II to obtain scanning II concentrate and scanning II mine tailing, scan II concentrate to turn back to and scan in I operation, scan II mine tailing and enter high intensity magnetic separation operation.
4. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 3, it is characterized in that: the described selected operation of (5) flotation specifically refers to: to roughly select I concentrate and to roughly select II concentrate as raw material, first stir and size mixing, and add waterglass 100 ~ 300g/t, carry out selected I operation, selected I operation obtains selected I concentrate and selected I mine tailing, and selected I concentrate is as the raw material of selected II operation, and selected I mine tailing turns back to roughing flotation operation; Selected I concentrate enters selected II operation, first stirs and sizes mixing, and not adding any medicament, to carry out blank selected, and obtain selected II concentrate and selected II mine tailing, wherein selected II mine tailing returns selected I operation; The final copper concentrate of selected II concentrate.
5. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 4, is characterized in that: described (6) high intensity magnetic separation operation specifically refers to: scan operation mine tailing for raw material with flotation, carry out high intensity magnetic separation operation; The condition of high intensity magnetic separation operation is: magnetic field intensity 0.8-1.8T, ore pulp mass percentage concentration 20-35%, high intensity magnetic separation operation obtains the high intensity magnetic separation mine tailing of nonmagnetic high intensity magnetic separation concentrate and weak magnetic, wherein, high intensity magnetic separation concentrate is final molybdenum chats product, and high intensity magnetic separation mine tailing is true tailings.
6. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 5, it is characterized in that: described high oxidation rate copper molybdenum symbiotic ore refers to that copper, molybdenum oxygenation efficiency are all more than 80%, and molybdenum oxide is mainly with the copper-molybdenum ore that the forms such as molybdenum calcium ore deposit, wulfenite, wulfenite exist.
7. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 5, is characterized in that: described disintegrating machine refers to the combination of one or more equipment in jaw crusher, double-roll crusher, high-pressure roller mill.
8. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 5, is characterized in that: described activator refers to the combination of one or more medicaments of ammonium sulfate, ammonium chloride, carbonic hydroammonium, ethylenediamine phosphate, dithiol thio biphosphole, BTA, triethanolamine.
9. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 5, is characterized in that: described vulcanizing agent refers to the combination of one or more medicaments of vulcanized sodium, NaHS, calcium sulfide, sodium polysulfide.
10. the beneficiation method of a kind of high oxidation rate copper molybdenum symbiotic ore according to claim 5, it is characterized in that: described collecting agent refers to that oxide mineral collector and sulfide mineral collector form by 1:1 ~ 2 ratio combination, and oxide mineral collector mainly refers to five or nine hydroximic acids, benzyl hydroximic acid, Using Salicyl Hydroximic Acid, enuatrol, oxidized paraffin wax soap, aphthenic acids or styrene phosphoric acid; Sulfide mineral collector mainly refers to butyl xanthate, ethyl xanthate, isopropyl xanthate, isoamyl xanthate, butylamine black powder, diethyldithiocarbamate, second third thiourethane or diethyldithiocarbamate propionitrile ester.
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