CN110433955A - Magnetic suspension combined separation and sorting method for copper-molybdenum bulk concentrates - Google Patents
Magnetic suspension combined separation and sorting method for copper-molybdenum bulk concentrates Download PDFInfo
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- CN110433955A CN110433955A CN201910651118.3A CN201910651118A CN110433955A CN 110433955 A CN110433955 A CN 110433955A CN 201910651118 A CN201910651118 A CN 201910651118A CN 110433955 A CN110433955 A CN 110433955A
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- copper
- molybdenum
- separation
- flotation
- concentrate
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- 239000012141 concentrate Substances 0.000 title claims abstract description 68
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000926 separation method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 25
- 239000000725 suspension Substances 0.000 title abstract 2
- 239000010949 copper Substances 0.000 claims abstract description 87
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052802 copper Inorganic materials 0.000 claims abstract description 70
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 56
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000011733 molybdenum Substances 0.000 claims abstract description 55
- 238000005188 flotation Methods 0.000 claims abstract description 53
- 238000007885 magnetic separation Methods 0.000 claims abstract description 52
- 230000001629 suppression Effects 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 18
- 239000002283 diesel fuel Substances 0.000 claims description 10
- GNBVPFITFYNRCN-UHFFFAOYSA-M sodium thioglycolate Chemical group [Na+].[O-]C(=O)CS GNBVPFITFYNRCN-UHFFFAOYSA-M 0.000 claims description 9
- 229940046307 sodium thioglycolate Drugs 0.000 claims description 9
- 238000007667 floating Methods 0.000 claims description 5
- 229910001779 copper mineral Inorganic materials 0.000 abstract description 10
- 239000003814 drug Substances 0.000 abstract description 9
- 239000003112 inhibitor Substances 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- RYTYSMSQNNBZDP-UHFFFAOYSA-N cobalt copper Chemical compound [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052961 molybdenite Inorganic materials 0.000 description 5
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 5
- 229910052951 chalcopyrite Inorganic materials 0.000 description 4
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- INLWVUQVLJEFTL-UHFFFAOYSA-N C(C)(=S)O.[Na] Chemical compound C(C)(=S)O.[Na] INLWVUQVLJEFTL-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- 229920001661 Chitosan Chemical class 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910052612 amphibole Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- -1 dosage 120g/t Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 229910052949 galena Inorganic materials 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- ACTRVOBWPAIOHC-XIXRPRMCSA-N succimer Chemical compound OC(=O)[C@@H](S)[C@@H](S)C(O)=O ACTRVOBWPAIOHC-XIXRPRMCSA-N 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- CWERGRDVMFNCDR-UHFFFAOYSA-M thioglycolate(1-) Chemical class [O-]C(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-M 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a magnetic suspension combined separation and sorting method for copper-molybdenum bulk concentrates, which comprises the following steps: (1) firstly, carrying out mixed flotation on copper-molybdenum raw ores to obtain copper-molybdenum mixed rough concentrates with the Cu grade of 6-10%; (2) carrying out at least one-stage magnetic separation on the copper-molybdenum mixed rough concentrate by adopting superconducting magnetic separation, wherein the background field intensity of the superconducting magnetic separation is 3.5T-5.0T, and obtaining a qualified copper concentrate with the Cu grade of more than 16% as a magnetic product; (3) and performing copper-suppression molybdenum flotation separation on the nonmagnetic product subjected to superconducting magnetic separation to obtain qualified molybdenum concentrate with the molybdenum grade of 49% and the Cu content of 0.2%. The method optimally separates more than 90 percent of copper minerals through superconducting magnetic separation, and shortens the separation process of the copper minerals. In the subsequent copper-inhibiting molybdenum flotation separation process, due to the pre-separation of copper minerals, the dosage of the copper inhibitor is only 1/20-1/10 of the dosage of the conventional single flotation separation process, so that the dosage of the medicament is greatly reduced, and the medicament cost is saved.
Description
Technical field
The present invention relates to copper-molybdenums to separate sorting technology field, particularly relates to a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation point
From method for separating.
Background technique
Copper-molybdenum ore is the current valuable source for extracting copper and molybdenum, and it is total that the Mo resource amount recycled in copper-molybdenum ore accounts for World Molybdenum
50% or so of yield.For association copper-molybdenum resource often based on Porphyry Copper (molybdenum), molybdenum (copper) mineral deposit, reserves are big, resourceful altogether.
But such mineral deposit has the characteristics that head grade is low, disseminated grain size is thin.Molybdenite has layer structure, and having good can naturally float
Property, often with the close symbiosis of sulphide ores such as chalcopyrite, pyrite, process is complicated when causing copper-cobalt ore, separation is difficult, to influence
The index of final concentrate product.The technical matters that separation of copper-molybdenum is carried out in copper-molybdenum ore mainly uses floatation at present, former
Have two methods of diffeential floatation and bulk flotation on then, but using it is more be bulk flotation, that is, first pass through roughing and obtain copper-molybdenum
Then rough concentrate separates copper or molybdenum from copper-molybdenum rough concentrate.Since copper sulfide mineral and molybdenite floatability are close, copper-molybdenum is obtained
Rough concentrate is relatively easy to, but the subsequent copper-cobalt ore difficulty of rough concentrate progress is larger.
Strict requirements are proposed to the content of copper in molybdenum concentrate according to professional standard (YS/T235-2007), KMo-47 with
On molybdenum concentrate product in copper content≤0.25%, this just proposes very high requirement to copper-cobalt ore operation.Copper-cobalt ore mesh
Before mostly use suppression copper float molybdenum floatation separation process, key technology is the inhibition realized to copper mineral.Have at present to copper sulfide
There is the medicament of inhibiting effect there are tens kinds, but the medicament of industrial application and few, can be divided into three categories.1. inorganic matter such as vulcanizes
Sodium class, Knox class and Cyanides, these three types of medicaments or exclusive use are used in mixed way, and have constituted copper-molybdenum bulk concentrate point
Conventional dose from.Vulcanized sodium class medicament has strong reducing property, is easy by the dissolved oxygen or other oxides in flotation pulp
It is aoxidized, dosage is larger (such as Dexing copper mine carries out suppression copper using vulcanized sodium and floats molybdenum, and dosage is up to 80~100kg/t), for this
Kind phenomenon, foreign countries have mine using nitrogen charging method for floating, can aid reduction amount of sodium sulfide, but the domestic case not being applied successfully
Example.The disadvantages of Knox class and Cyanides reagent toxicity are big, and environmental pollution is larger, and medicament is oxidizable, at high cost.2. organic
Object, such as thioglycolate salt, ethanethio, such dosing is less, and selectivity is higher but expensive, to particulate copper mine
The inhibitory effect of object is poor.Deer rings molybdenum ore using inhibitor of the sodium thioglycolate as copper-cobalt ore, and the dosage of actual production is about
It is 5 times of dosages when designing for 200g/t.3. new inhibitor, in addition to above-mentioned common medicament, domestic and foreign scholars develop some new
Type copper deactivator, such as BK511, DPS, CM1, chitosan class, DMSA etc. have materials few, low-cost feature, but
There is not the report of production and application.
In general, most copper-molybdenum bargh, China uses the floatation separation process for pressing down the floating molybdenum of copper, process flow at present
Length, copper deactivator dosage are big, and copper content is exceeded serious in molybdenum concentrate.
Chinese patent CN106583026A discloses a kind of floating magnetic joint separation of copper-molybdenum-separation method, mixes essence with copper-molybdenum
Mine is to carry out suppression copper to mine and float molybdenum FLOTATION SEPARATION, it is strong using background magnetic field that suppression copper floats the froth pulp generated after molybdenum FLOTATION SEPARATION
The superconducting magnetic separator that degree is 3200-4800KA/m carries out copper-molybdenum and separates again, and gained is molybdenum concentrate product, gained without magnetic part
There is magnetic part to float the roughing operation of molybdenum FLOTATION SEPARATION as middling recurrence suppression copper, suppression copper floats the underflow product progress after molybdenum FLOTATION SEPARATION
Copper mineral flotation obtains copper concentrate.This method uses sodium thioglycolate for copper mineral inhibitor, dosage 120g/t, and copper inhibits
Agent dosage is big.
Summary of the invention
For the problems such as there are copper deactivator dosage is big, and molybdenum concentrate cupric is exceeded by single FLOTATION SEPARATION copper-molybdenum at present,
The present invention proposes a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation separation method for separating.
The technical scheme of the present invention is realized as follows: a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation separates method for separating,
The following steps are included:
(1) copper-molybdenum raw ore first choice carries out bulk flotation, obtains Cu grade in the copper-molybdenum mixed crude concentrate of 6%-10%；
(2) copper-molybdenum mixed crude concentrate carries out the separation of an at least stages of magnetic separation, the background lectromagnetism field of superconducting magnetic separation using superconducting magnetic separation
In 3.5T-5.0T, the qualified copper concentrate that magnetic product is Cu grade > 16% is obtained；Copper-molybdenum mixed crude concentrate according to chalcopyrite and
Molybdenite magnetic mineral difference carries out one section using the method for superconducting magnetic separation or two stages of magnetic separation separates；Two sections of superconducting magnetic separations are to mine
Ore grinding dissociation again is decided whether according to the actual conditions of copper-molybdenum mixed crude concentrate to mine；
(3) non-magnetic product after superconducting magnetic separation carry out suppression copper float molybdenum FLOTATION SEPARATION, obtain molybdenum grade>49%, containing Cu<
0.2% qualified molybdenum concentrate.
Further, in step (2), the copper concentrate that copper-molybdenum mixed crude concentrate obtains after one section of superconducting magnetic separation is not up to
Cu grade > 16% then needs to carry out ore grinding, and grinding fineness is that -0.043mm is accounted between 85-95%, then carries out two sections of superconducting magnetics
Choosing, the magnetic product of two sections of superconducting magnetic separations are qualified copper concentrate.
Further, in step (3), suppression copper floats molybdenum FLOTATION SEPARATION the following steps are included: by the non magnetic production of superconducting magnetic separation
It is regrinded after product mixing, grinding fineness is that -0.043mm accounts for 75-90%, is then scanned by one section of roughing, two or three sections, two or three
Duan Jingxuan, chats sequence return, and obtain qualified molybdenum concentrate and tailing 2.
Further, in step (1), copper-molybdenum raw ore first carries out ore grinding before bulk flotation, and grinding fineness -0.074mm is accounted for
65-80%.
Further, in step (1), bulk flotation includes one roughing, scan for three or four times, three or four times it is selected, in
Mine sequence returns, and obtains copper-molybdenum mixed crude concentrate and tailing 1.
Further, during suppression copper floats molybdenum FLOTATION SEPARATION, copper deactivator 3-6g/t, diesel oil 1- are added in one section of roughing
2g/t, No. 2 oil 1-2g/t；One section of selected middle addition copper deactivator 2-4g/t；Two sections of selected middle addition copper deactivator 1.5-3g/t,
Diesel oil 0-0.5g/t.
Further, the copper deactivator is sodium thioglycolate.In addition, copper deactivator can also be vulcanized sodium etc..
Further, in step (1), copper content is 0.2-1.0%, molybdenum content 0.02-0.12% in copper-molybdenum raw ore.
Beneficial effects of the present invention: method of the invention goes out 90% or more copper mineral by superconducting magnetic separation preferable separate,
Shorten the separation sorting process of copper mineral.During subsequent suppression copper floats molybdenum FLOTATION SEPARATION, due to dividing in advance for copper mineral
From the dosage of copper deactivator is only the 1/20-1/10 of conventional single floatation separation process dosage, greatly reduces medicament use
Amount, saves reagent cost；And conventional suppression copper floats molybdenum separation phase, it usually needs four-five Duan Jingxuan, the solution of the present invention,
Press down during the floating molybdenum FLOTATION SEPARATION of copper, shortens cleaning technological flowasheet to two-three sections, simplify process flow, improve the effect of sorting
Rate reduces costs.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow process figure of the prior art；
Fig. 2 is principle process artwork of the invention；
Fig. 3 is the flow process figure of embodiment one.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
As shown in Fig. 2, a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation separates method for separating, comprising the following steps:
(1) copper-molybdenum raw ore first choice carries out bulk flotation, obtains Cu grade in the copper-molybdenum mixed crude concentrate of 6%-10%；
(2) copper-molybdenum mixed crude concentrate carries out the separation of an at least stages of magnetic separation, the background lectromagnetism field of superconducting magnetic separation using superconducting magnetic separation
In 3.5T-5.0T, the qualified copper concentrate that magnetic product is Cu grade > 16% is obtained；Copper-molybdenum mixed crude concentrate according to chalcopyrite and
Molybdenite magnetic mineral difference carries out one section using the method for superconducting magnetic separation or two stages of magnetic separation separates；Between two stages of magnetic separation separation
Ore grinding dissociation again is decided whether according to the actual conditions of copper-molybdenum mixed crude concentrate；
(3) non-magnetic product after superconducting magnetic separation carry out suppression copper float molybdenum FLOTATION SEPARATION, obtain molybdenum grade>49%, containing Cu<
0.2% qualified molybdenum concentrate.
Further, in step (2), the copper concentrate that copper-molybdenum mixed crude concentrate obtains after one section of superconducting magnetic separation is not up to
Cu grade > 16% then needs to carry out ore grinding, and grinding fineness is that -0.043mm is accounted between 85-95%, then carries out two sections of superconducting magnetics
Choosing, the magnetic product of two sections of superconducting magnetic separations are qualified copper concentrate.
Further, in step (3), suppression copper floats molybdenum FLOTATION SEPARATION the following steps are included: by the non magnetic production of superconducting magnetic separation
It is regrinded after product mixing, grinding fineness is that -0.043mm accounts for 75-90%, is then scanned by one section of roughing, two or three sections, two or three
Duan Jingxuan, chats sequence return, and obtain qualified molybdenum concentrate and tailing 2.
Further, in step (1), copper-molybdenum raw ore first carries out ore grinding before bulk flotation, and grinding fineness -0.074mm is accounted for
65-80%.
Further, in step (1), bulk flotation includes one roughing, scan for three or four times, three or four times it is selected, in
Mine sequence returns, and obtains copper-molybdenum mixed crude concentrate and tailing 1.
Further, during suppression copper floats molybdenum FLOTATION SEPARATION, copper deactivator 3-6g/t, diesel oil 1- are added in one section of roughing
2g/t, No. 2 oil 1-2g/t；One section of selected middle addition copper deactivator 2-4g/t；Two sections of selected middle addition copper deactivator 1.5-3g/t,
Diesel oil 0-0.5g/t.
Further, the copper deactivator is sodium thioglycolate.In addition, copper deactivator can also be vulcanized sodium etc..
Further, in step (1), copper content is 0.2-1.0%, molybdenum content 0.02-0.12% in copper-molybdenum raw ore.
Embodiment 1
Henan skarn type copper-molybdenum, molybdenum grade 0.12% in raw ore, copper grade 0.26%.The mineral composition kind of ore
Class is simpler, secondly it is magnetic iron ore, pyrite, zincblende that metalliferous mineral, which is mainly chalcopyrite, molybdenite, accidental galena,
Rutile etc. is sporadicly distributed；Highest gangue mineral content is feldspar, secondly for quartz, amphibole, mica, calcite and on a small quantity
Montmorillonite, chlorite etc..Copper is mixed-pressed down using conventional copper-molybdenum and float molybdenum separating flotation technique, as shown in Figure 1, selecting thioacetic acid
Sodium is the inhibitor of copper mineral, and dosage is 160g/t raw ore, and separation index is shown in Table 1.
Mixed floating-suppression the copper of the conventional copper-molybdenum of table 1 floats molybdenum separating technology separation index
2 are shown in Table using technique separation index of the invention, flow process figure is sorted and dosing is as shown in Figure 2.
2 present invention process separation index of table
Copper-molybdenum bulk flotation carries out bulk flotation under conditions of grinding fineness -0.074mm accounts for 75%, and bulk flotation is primary
Roughing is scanned, four selected, chats sequence returns, acquisition copper-molybdenum mixed crude concentrate and tailing 1, copper-molybdenum mixed crude concentrate three times
Middle Cu grade is that 6.85%, Mo grade is 3.79%.Copper-molybdenum mixed crude concentrate obtains qualification after two sections of superconducting magnetic separations are enriched with
Copper concentrate (Cu grade is 16.11%), the background lectromagnetism field of one section of superconducting magnetic separation is 4.5T, and the background intensity of two sections of superconducting magnetic separations is
3.5T, to mine, grinding rate is that -0.043mm accounts for 92% to two sections of superconducting magnetic separations again.
It is regrinded after the non-magnetic product mixing of two sections of superconducting magnetic separations, fineness is that -0.043mm accounts for 82%, then passes through " one section
Roughing, two sections scan, two sections it is selected " suppression copper float molybdenum flotation after obtain qualified molybdenum concentrate and tailing 2, Mo grade in qualified molybdenum concentrate
It is 50.23, cupric 0.071%.
As shown in Fig. 2, suppression copper floats in molybdenum floatation process, sodium thioglycolate 5g/t, diesel oil 1.5g/t are added in one section of roughing,
No. 2 oil 1.2g/t, one section of selected middle addition sodium thioglycolate 3g/t, two sections of selected middle addition sodium thioglycolate 2g/t, diesel oil
0.4g/t, one section is scanned middle addition diesel oil 0.8g/t, and No. 2 oil 0.4g/t, two sections are scanned middle addition diesel oil 0.4g/t, No. 2 oil
0.2g/t, total dosage of sodium thioglycolate are 10g/t raw ore, and only conventional copper-molybdenum mixes-presses down copper and floats molybdenum separating flotation dosage
1/16.Further, since copper-cobalt ore effect is preferable, new technology is compared compared with routine techniques, and molybdenum recovery improves 5.5 percentages
Point.
Embodiment 2-4
Embodiment 2-4 is basically the same as the first embodiment, the difference is that: during suppression copper floats molybdenum FLOTATION SEPARATION, one section
Roughing, two sections of selected dosings:
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation separates method for separating, which comprises the following steps:
(1) copper-molybdenum raw ore first choice carries out bulk flotation, obtains Cu grade in the copper-molybdenum mixed crude concentrate of 6%-10%；
(2) copper-molybdenum mixed crude concentrate carries out the separation of an at least stages of magnetic separation using superconducting magnetic separation, and the background lectromagnetism field of superconducting magnetic separation exists
3.5T-5.0T obtains the qualified copper concentrate that magnetic product is Cu grade > 16%；
(3) non-magnetic product after superconducting magnetic separation carries out suppression copper and floats molybdenum FLOTATION SEPARATION, obtains molybdenum grade>49%, contains Cu<0.2%
Qualified molybdenum concentrate.
2. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 1 separates method for separating, which is characterized in that step
Suddenly in (2), the copper concentrate that copper-molybdenum mixed crude concentrate obtains after one section of superconducting magnetic separation is not up to Cu grade > 16%, then needs
Ore grinding is carried out, grinding fineness is that -0.043mm is accounted between 85-95%, two sections of superconducting magnetic separations are then carried out, two sections of superconducting magnetic separations
Magnetic product is qualified copper concentrate.
3. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 1 or 2 separates method for separating, feature exists
In in step (3), suppression copper is regrinded after floating molybdenum FLOTATION SEPARATION the following steps are included: the non-magnetic product of superconducting magnetic separation is mixed, and is ground
Mine fineness is that -0.043mm accounts for 75-90%, is then scanned by one section of roughing, two or three sections, two or three Duan Jingxuan, chats sequence
It returns, obtains qualified molybdenum concentrate and tailing 2.
4. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 1 separates method for separating, which is characterized in that step
Suddenly in (1), copper-molybdenum raw ore first carries out ore grinding before bulk flotation, and grinding fineness -0.074mm accounts for 65-80%.
5. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 1 separates method for separating, which is characterized in that step
Suddenly in (1), bulk flotation includes one roughing, scans for three or four times, three or four selected, chats sequence returns, acquisition copper-molybdenum
Mixed crude concentrate and tailing 1.
6. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 3 separates method for separating, which is characterized in that suppression
During copper floats molybdenum FLOTATION SEPARATION, copper deactivator 3-6g/t, diesel oil 1-2g/t, No. 2 oil 1-2g/t are added in one section of roughing；One section
Selected middle addition copper deactivator 2-4g/t；Two sections of selected middle addition copper deactivator 1.5-3g/t, diesel oil 0-0.5g/t.
7. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 6 separates method for separating, which is characterized in that institute
Stating copper deactivator is sodium thioglycolate.
8. a kind of copper-molybdenum mixed crude concentrate Combination of magnetic separation flotation according to claim 1 separates method for separating, which is characterized in that step
Suddenly in (1), copper content is 0.2-1.0%, molybdenum content 0.02-0.12% in copper-molybdenum raw ore.
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| CN114534906A (en) * | 2022-03-08 | 2022-05-27 | 昆明冶金研究院有限公司 | Beneficiation method for molybdenum-containing high-zinc complex magnesium silicate alteration skarn type copper ore |
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