CN109482363A - Copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method - Google Patents
Copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method Download PDFInfo
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- CN109482363A CN109482363A CN201811636599.2A CN201811636599A CN109482363A CN 109482363 A CN109482363 A CN 109482363A CN 201811636599 A CN201811636599 A CN 201811636599A CN 109482363 A CN109482363 A CN 109482363A
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- molybdenum
- concentrate
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Classifications
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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
-
- 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
Abstract
The present invention relates to a kind of copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation methods, copper-molybdenum bulk concentrate sulfuric acid is added at the low ph first to pre-process, then nitrogen charging and selection medicament carry out FLOTATION SEPARATION one roughing, scan twice, four times it is selected to get copper concentrate and molybdenum concentrate.It has many advantages, such as that stability is good, adaptable, dosing is few, separation costs are extremely low, particularly suitable for recycling copper-molybdenum is efficiently separated from copper-molybdenum bulk concentrate.
Description
Technical field
The present invention relates to a kind of copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation methods, mix essence particularly suitable for from copper-molybdenum
Recycling copper-molybdenum is efficiently separated in mine.
Background technique
Under normal conditions, there are two types of schemes for the separation of copper-molybdenum bulk concentrate: first is that suppression molybdenum floats copper, that is, inhibiting molybdenite flotation sulphur
Change copper mine, but due in bulk concentrate molybdenum grade it is very low, and molybdenite floatability is better than copper mineral, and the molybdenite after being suppressed is again
More difficult activation, therefore be used in few situation；Second is that suppression copper float molybdenum, i.e., inhibition copper-sulphide ores flotation molybdenite, be at present into
The main method of row copper-cobalt ore, suppression copper float molybdenum, usually individually or be used cooperatively the following medicament, as Cymag, Knox,
The deficiencies of vulcanized sodium etc. makees inhibitor using Cymag, and it is more expensive that there are prices, also causes environmental pollution limits it and is producing
On application, and Knox class medicament is mainly used to inhibit lead, achievees the purpose that reduce lead content in molybdenum concentrate, there are medicaments to disappear
Consumption is fast, is easily aoxidized by the oxygen in ore pulp and loses the deficiencies of inhibiting efficiency, and vulcanized sodium is current most popular copper mineral
Inhibitor, but the deficiencies of vulcanized sodium stability is poor, and dosage is big, that is, need a large amount of inhibitor that can just copper-sulphide ores be made to be pressed down
System, when carrying out copper-cobalt ore with vulcanized sodium, dosage at least will will even reach 50~70kg/t 10kg/t (giving mine) sometimes
(give mine) can just be such that copper-molybdenum bulk concentrate separates, and since medicament expense is with excessively high, selects molybdenum to lose, cause to make copper-molybdenum due to economic cause
Molybdenum in mine cannot recycle, and copper-molybdenum is caused to be difficult to separate and separate big one of the reason of reagent consumption amount, in that copper-molybdenum mixing
Which kind of technological means Residuals in concentrate take can solve the Residuals in copper-molybdenum bulk concentrate, through retrieving, inventor
The technical literature for solving problems is not found.
Researching and developing a kind of copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method thus just seems especially urgent.
Summary of the invention
The task of the present invention is for overcome the deficiencies in the prior art, provide a kind of copper-molybdenum bulk concentrate sulfuric acid to locate in advance
Separating flotation method is managed, copper-molybdenum metal is able to achieve and efficiently separates, while stability is good, dosing is small, moreover it is possible to be greatly lowered
Production cost.
The task of the present invention is by the following technical programs to complete:
Copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method, first adds copper-molybdenum bulk concentrate at the low ph
Add sulfuric acid to be pre-processed, then carry out FLOTATION SEPARATION one roughing, scan twice, four times it is selected to get copper concentrate and molybdenum essence
Mine.
Percentage involved in specification is mass percent.As the sulfuric acid of beneficiation reagent of the present invention, NaHS,
Sulfonated kerosene and MIBC etc. are industrial chemicals that is cheap and easily purchasing in market.
Compared with the prior art, the present invention has the following advantages and effect:
Copper-molybdenum bulk concentrate is effectively pre-processed before FLOTATION SEPARATION, promotes the Residuals point of mineral surfaces
Solution, while suitable slurry pH and potential environment can also be provided, separating flotation is then carried out again, is remarkably improved point of copper-molybdenum
From effect, inhibitor dosage is greatly lowered, using sulfur acid pretreatment plus nitrogen charging floatation, realizes having for copper-molybdenum bulk concentrate
FLOTATION SEPARATION is imitated, has the characteristics that stability is good, adaptable, dosing is few, separation costs are extremely low.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method of the present invention.
Respectively mark respectively indicates in attached drawing:
1. 2. NaHS of sulfuric acid, 3. sulfonated kerosene 4.MIBC A. copper-molybdenum bulk concentrate B. copper concentrate C. molybdenum concentrate D. molybdenum is swept
1 chats E. molybdenum is selected to scan selected selected 4 tailing of 3 tailing I. molybdenum of the selected 2 tailing H. molybdenum of the selected 1 tailing G. molybdenum of 2 tailing F. molybdenums
Specific embodiment
As shown in Figure 1, a kind of method of copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method of the invention, first will
Copper-molybdenum bulk concentrate A adds sulfuric acid 1 at the low ph and is pre-processed, and then carries out FLOTATION SEPARATION one roughing, twice
Scan, four times it is selected to get copper concentrate B and molybdenum concentrate C.
Technique of the invention may furthermore is that:
The FLOTATION SEPARATION process replaces air with nitrogen.
The method according to claim 1 or 2, it is characterized in that FLOTATION SEPARATION medicament includes NaHS 2, sulfonation
At least one of kerosene 3, MIBC4.
The pretreatment and FLOTATION SEPARATION are successively carried out with condition as follows:
(a) it pre-processes, the copper-molybdenum bulk concentrate A introducing stirred tank that flotation obtains is stirred and is sized mixing, addition sulfuric acid 1 is used
1400~1600 g tons of mines are measured, stirs 20 minutes, the pH value of ore pulp is made to be maintained at 6.0~6.5, it is mixed to obtain pretreated copper-molybdenum
Close concentrate slurry；
(b) the copper-molybdenum bulk concentrate after sulfur acid pretreatment is introduced flotation device, pressed by one roughing, i.e. separation roughing
Mine per ton first adds 2800~3000 grams of NaHSs 2, stirs 3 minutes, make slurry pH increase to 9.0~9.5, Eh be -360~
380mV, then 80~90 grams of sulfonated kerosene 3 and 20~30 gram MIBC4 are added, it stirs 1 minute, obtains roughing copper concentrate and roughing molybdenum essence
Mine；
(c) secondary to scan, i.e., molybdenum is carried out step by step and scans 1, adds 400~500 grams of sulphur hydrogen to roughing copper concentrate by mine per ton
Change sodium 2, stir 3 minutes, adds 20~30 grams of sulfonated kerosene 3 and 5~10 gram MIBC4, respectively mix 1 minute, molybdenum scans 2, sweeps in molybdenum
Addition 10~15 grams of sulfonated kerosenes, 3,5~10 grams of MIBC4 are selected in 1 tailing, are stirred 1 minute, obtaining molybdenum and scanning 2 tailing is most
Whole copper concentrate B；
(d) four times it is selected, i.e., step by step carry out molybdenum selected 1, by mine per ton to roughing molybdenum concentrate addition 600~700 grams of sulphur hydrogen
Change sodium 1, stir 3 minutes, 20~30 grams of sulfonated kerosenes 2, stirs 1 minute, obtain the concentrate of molybdenum selected 1, molybdenum selected 2, to molybdenum selected 1
Concentrate add 400~500 grams of NaHSs 2, stir 3 minutes, 10~15 grams of sulfonated kerosenes 3, stir 1 minute, obtain molybdenum selected 2
Concentrate, molybdenum selected 3, into the concentrate of molybdenum selected 2 add 200~300 grams of NaHSs 2, stir 3 minutes, 5~10 grams of sulfonation
Kerosene 3 stirs 1 minute, obtains the concentrate of molybdenum selected 3, and molybdenum selected 4 adds 5~10 grams of sulfonated kerosenes 3 to the concentrate of molybdenum selected 3,
Stirring 1 minute, the concentrate for obtaining molybdenum selected 4 is final molybdenum concentrate C.
The molybdenum scans 1, molybdenum and scans 2, molybdenum is selected 1, molybdenum is selected 2, molybdenum is selected 3, molybdenum selected 4 obtains each chats D~I all
Successively return to a processing step.
The present invention is described in detail combined with specific embodiments below.
Specific embodiment of the embodiment of the present invention are as follows:
Using identical copper-molybdenum bulk concentrate, with method of the invention and well known conventional vulcanized sodium method and sodium cyanide method into
Row separating flotation check experiment, test result are shown in Table
Example 1
The copper-molybdenum bulk concentrate introducing stirred tank that flotation obtains is stirred and is sized mixing, adds 1500 g tons of sulfuric acid dosage
Mine stirs 20 minutes, the pH value of ore pulp is made to be maintained at 6.0~6.5；Copper-molybdenum bulk concentrate after sulfur acid pretreatment is drawn
Enter flotation device, add 2900 g tons of mines of NaHS dosage, stir 3 minutes, make slurry pH increase to 9.0~9.5, Eh be-
360~380mV, adds 85 g tons of mines of sulfonated kerosene dosage, 25 g tons of mines of MIBC dosage, and each stirring 1 minute separate thick
Choosing；450 g tons of mines of NaHS dosage are added in the tailing of separation roughing, are stirred 3 minutes, and sulfonated kerosene dosage 25 is added
G ton mine, 7.5 g tons of mines of MIBC dosage, each stirring 1 minute carry out molybdenum and scan 1；Sulfonation is added in the tailing that molybdenum scans 1
12.5 g tons of kerosene consumption are given mine, and 7.5 g tons of MIBC dosage are given mine, and each stirring 1 minute carries out molybdenum and scans 2, and molybdenum scans 2
Tailing is final copper concentrate；650 g tons of mines of NaHS dosage are added in the concentrate of separation roughing, are stirred 3 minutes,
25 g tons of mines of sulfonated kerosene dosage stir 1 minute, carry out molybdenum selected 1；NaHS dosage is added in the concentrate of molybdenum selected 1
450 g tons of mines stir 3 minutes, 12.5 g tons of mines of sulfonated kerosene dosage, stir 1 minute, carry out molybdenum selected 2；In molybdenum selected 2
Concentrate in add 250 g tons of mines of NaHS dosage, stir 3 minutes, 7.5 g tons of mines of sulfonated kerosene dosage, stir 1 point
Clock carries out molybdenum selected 3；7.5 g tons of mines of sulfonated kerosene dosage are added in the concentrate of molybdenum selected 3, are stirred 1 minute, and molybdenum essence is carried out
4 are selected, the concentrate of molybdenum selected 4 is final molybdenum concentrate；Molybdenum can be scanned to 1, molybdenum and scan that 2, molybdenum is selected 1, molybdenum is selected 2, molybdenum is selected
3, each chats that molybdenum selected 4 obtains all successively returns to a flotation operation；
Example 2
Dosing and embodiment 1 added by each operation change outer, specific embodiment and process and embodiment 1
It is identical.
Embodiment 3
In addition to dosing and embodiment 1 added by each operation and embodiment 2 change, specific embodiment and process
It is identical as embodiment 1,2.
Comparative example 1
Traditional sodium sulfide method, without sulfur acid pretreatment, floating agent dosage is determined after condition optimizing
Optimum amount, the floating agent used are vulcanized sodium, common kerosene and terpenic oil, selected using separation roughing, four molybdenums, twice
Molybdenum scans flotation flowsheet, and each secondary molybdenum is swept, selected obtained chats successively returns to a upper flotation operation, and flotation whole process is filled with air.
Comparative example 2
Traditional sodium hydrosulfide, without sulfur acid pretreatment, floating agent dosage is determined after condition optimizing
Optimum amount, the floating agent used is NaHS, common kerosene and terpenic oil, it is selected using separation roughing, four molybdenums,
Molybdenum scans flotation flowsheet twice, and each secondary molybdenum is swept, selected obtained chats successively returns to a upper flotation operation, and flotation whole process is filled with sky
Gas.
The technic index and effect list of 1 embodiment of the present invention of table and comparative example
2 embodiment of the present invention of table and contrast agents cost accounting list
From table 1, table 2 it is found that the embodiment of the present invention 1, embodiment 2, embodiment 3 it is isolated molybdenum concentrate Mo grade it is equal >
50%, the Mo rate of recovery is equal > and 85%, with corresponding the referring to of comparative example 1, comparative example 2 (using well known vulcanized sodium or sodium hydrosulfide)
Mark is compared, and Mo grade, the Mo rate of recovery can be improved about 3 percentage points, while can reduce about 20 yuan/ton of mines of reagent cost.
As described above, the present invention can be better realized.Above-described embodiment is only the optimal embodiment of the present invention, but this
The embodiment of invention is simultaneously not restricted to the described embodiments, what other were done without departing from the spirit and principles of the present invention
Change, modification, replacement, combination, simplify, should be equivalent substitute mode, be included in protection scope of the present invention.
Claims (5)
1. copper-molybdenum bulk concentrate sulfur acid pretreatment separating flotation method, it is characterised in that first by copper-molybdenum bulk concentrate (A) low
Under pH value condition add sulfuric acid (1) pre-processed, then carry out FLOTATION SEPARATION one roughing, scan twice, four times it is selected, i.e.,
Obtain copper concentrate (B) and molybdenum concentrate (C).
2. according to the method described in claim 1, it is characterized in that the FLOTATION SEPARATION process replaces air with nitrogen.
3. method according to claim 1 or 2, it is characterized in that the FLOTATION SEPARATION medicament includes NaHS (2), sulfonation
At least one of kerosene (3), MIBC (4).
4. according to the method described in claim 1, it is characterized in that the pretreatment and FLOTATION SEPARATION successively as follows and item
Part carries out:
(a) it pre-processes, copper-molybdenum bulk concentrate (A) the introducing stirred tank that flotation obtains is stirred and is sized mixing, addition sulfuric acid (1) is used
1400~1600 g tons of mines are measured, stirs 20 minutes, the pH value of ore pulp is made to be maintained at 6.0~6.5, it is mixed to obtain pretreated copper-molybdenum
Close concentrate slurry；
(b) the copper-molybdenum bulk concentrate after sulfur acid pretreatment is introduced flotation device, by per ton by one roughing, i.e. separation roughing
Mine first adds 2800~3000 grams of NaHSs (2), stirs 3 minutes, make slurry pH increase to 9.0~9.5, Eh be -360~
380mV, then 80~90 grams of sulfonated kerosenes (3) and 20~30 grams of MIBC (4) are added, it stirs 1 minute, obtains roughing copper concentrate and roughing
Molybdenum concentrate；
(c) secondary to scan, i.e., molybdenum is carried out step by step and scans 1, adds 400~500 grams of NaHSs to roughing copper concentrate by mine per ton
(2), it stirs 3 minutes, adds 20~30 grams of sulfonated kerosenes (3) and 5~10 grams of MIBC (4), respectively mix 1 minute, molybdenum scans 2, in molybdenum
10~15 grams of sulfonated kerosenes (3) of addition in 1 tailing are scanned, 5~10 grams of MIBC (4) stir 1 minute, obtain the tailing that molybdenum scans 2
As final copper concentrate (B)；
(d) four times it is selected, i.e., step by step carry out molybdenum selected 1, by mine per ton to roughing molybdenum concentrate addition 600~700 grams of NaHSs
(1), it stirs 3 minutes, 20~30 grams of sulfonated kerosenes (2), stirs 1 minute, obtain the concentrate of molybdenum selected 1, molybdenum selected 2, to molybdenum selected 1
Concentrate add 400~500 grams of NaHSs (2), stir 3 minutes, 10~15 grams of sulfonated kerosenes (3), stir 1 minute, obtain molybdenum
Selected 2 concentrate, molybdenum selected 3,200~300 grams of NaHSs (2) of addition into the concentrate of molybdenum selected 2, stirring 3 minutes, 5~
10 grams of sulfonated kerosenes (3) are stirred 1 minute, and the concentrate of molybdenum selected 3 is obtained, and molybdenum selected 4 adds 5~10 grams to the concentrate of molybdenum selected 3
Sulfonated kerosene (3) stirs 1 minute, and the concentrate for obtaining molybdenum selected 4 is final molybdenum concentrate (C).
5. method according to claim 1 or 2 or 4, it is characterized in that the molybdenum, which scans 1, molybdenum, scans that 2, molybdenum is selected 1, molybdenum essence
Each chats (D~I) that 2, molybdenum is selected 3, molybdenum selected 4 obtains is selected all successively to return to a processing step.
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Application publication date: 20190319 |