CN109939830A - A kind of technique that the middling cycle mode based on the separation of copper-molybdenum potential-controlled flotation reconstructs - Google Patents
A kind of technique that the middling cycle mode based on the separation of copper-molybdenum potential-controlled flotation reconstructs Download PDFInfo
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Abstract
The invention discloses a kind of techniques that the middling cycle mode based on the separation of copper-molybdenum potential-controlled flotation reconstructs.Many problems such as the ore-dressing technique is big for there are middling cycle amounts in the copper-molybdenum potential-controlled flotation separation process of Porphyry Type copper-molybdenum bulk concentrate, copper-cobalt ore process is tediously long, ore pulp argillization serious, reagent consumption amount is big, index is unstable, operating difficulties, by the way that the big chats of the clay content in copper-molybdenum potential-controlled flotation separation process is rebuild circulation loop, effectively increase the operation concentration ratio of molybdenum concentrate, reduce the internal circulating load of argillization gangue, and the operations number in molybdenum selected stage is substantially reduced, good economic benefit can be brought.
Description
Technical field
The invention belongs to non-ferrous metal ore technical fields, are related to a kind of chats based on the separation of copper-molybdenum potential-controlled flotation
The technique of endless form reconstruct, for the copper-molybdenum bulk concentrate obtained in porphyry copper mine through bulk flotation.
Background technique
Porphyry copper mine is the important sources of the important copper-molybdenum in China, it is common within and around granite porphyry
Country rock in, hydrothermal alteration generally related with its mineralization is based on silication, sericitization, potash feldspathization, therefore, porphyry
Main gangue mineral is based on quartz, mica, weathered feldspar, chlorite in type copper-molybdenum.
Copper-molybdenum potential-controlled flotation separating technology be suppressed under lower current potential using copper mineral and molybdenite not
This impacted principle carries out a kind of technique of copper-molybdenum potential-controlled flotation separation, which requires the electricity during copper-cobalt ore
Position control is at -500mv or so (Ag/AgCl electrode), and control of Electric potentials is generally using addition vulcanized sodium or NaHS.Due to sulphur
Change sodium, NaHS oxidation rate are very fast, and therefore, reagent consumption is larger during potential-controlled flotation.In addition, by bulk flotation
Obtained copper-molybdenum bulk concentrate clay content is larger, and quality is lower, and sial content is higher, and needs fine grinding during copper-cobalt ore,
Cause foam viscosity during copper-molybdenum potential-controlled flotation very big, mechanical entrapment is serious, and separation process is tediously long, easy mud scum gangue
Vicious circle brings many problems such as reagent consumption amount is big, index is unstable, the mutual content height of concentrate, operating difficulties.
It is therefore desirable to develop a kind of new copper-cobalt ore technique, a large amount of mud will be contained in mixing copper-molybdenum concentrate separation process
The chats for changing gangue re-starts circuit building, and argillization and mechanical entrapment are reduced in scientific and reasonable design middling cycle path, shortens
Process improves index.
Summary of the invention
It is reconstructed the purpose of the present invention is to provide a kind of middling cycle mode based on the separation of copper-molybdenum potential-controlled flotation
Technique, the technique construct two reconstruction points and two middling cycle circuits in copper-molybdenum potential-controlled flotation separation process, can be with
Shorten the process of copper-molybdenum potential-controlled flotation separation, reduces ore pulp argillization, significantly improve the sorting index of molybdenum concentrate.
To achieve the above object, the present invention provides a kind of middling cycle mode weight based on the separation of copper-molybdenum potential-controlled flotation
The technique of structure, includes the following steps:
1) the copper-molybdenum bulk concentrate after reagent removal is obtained into molybdenum rough concentrate and copper concentrate by one roughing once purging selection；
2) after the progress of molybdenum rough concentrate is dense, into Regrinding, grinding fineness is -0.038mm85~96%/- 0.025mm
70~85%；
3) selected by five times of selected one to selected five by the molybdenum rough concentrate regrinded, obtain molybdenum concentrate；
It wherein, include two reconstruction points and two circulation loops in five refining process, the first reconstruction point is the selected rank of molybdenum
Selected one tailing of section, the second reconstruction point are selected two tailing in molybdenum selected stage；
First circulation loop is to sequentially enter selected one-single-minded to sweep operation, essence after being scanned selected two ore pulp
It selects one foam of scanning to scan operation into selected two, forms a closed cycle；
Second circulation loop is scanned selected two after foam returns to selected two operation together with selected three ore pulp,
It scans to form a closed cycle using selected two；
Specifically: selected one ore pulp enters copper concentrate after being scanned, selected one foam of scanning enters selected two
Scan operation；After selected two ore pulp is scanned, return to a selected operation, selected two scan mine of the foam then with selected three
Slurry enters selected two operation together, other all foams and ore pulp sequentially return；
Selected one operation of scanning is swept to be single-minded, and selected two operation of scanning is swept for essence two.
Preferably, it is 20~30% that the step 1) roughing, the floatation concentration scanned, which are with weight ratio meter, and roughing is scanned
Amount of sodium sulfide is 15~30kg/t, and sodium thioglycolate dosage is 0.08~0.2kg/t.
Preferably, the step 1) roughing, the flotation time scanned are respectively 5~10min, 5~10min.
Preferably, step 3) it is described selected one to selected five, it is single-minded sweep, floatation concentrations that essence two is swept with weight ratio meter for 12
~20%, a selected amount of sodium sulfide is 15~30kg/t, and sodium thioglycolate dosage is 0.08~0.2kg/t；Selected curing
Sodium dosage is 5~15kg/t, and sodium thioglycolate dosage is 0.02~0.08kg/t；Selected trisulfides sodium dosage is 5~15kg/t,
Sodium thioglycolate dosage is 0.02~0.07kg/t, and selected sodium tetrasulfide dosage is 2~10kg/t, and sodium thioglycolate dosage is
0.01~0.05kg/t, single-minded amount of sodium sulfide of sweeping is 10~15kg/t, and kerosene consumption is 5~20g/t, and essence two sweeps vulcanized sodium use
Amount is 5-15kg/t, and kerosene consumption is 5~15g/t.
Preferably, step 3) it is described selected one, selected two, selected three, selected four, selected five, it is single-minded sweep, that essence two is swept is floating
Selecting the time is respectively 5~9min, 5~9min, 5~9min, 5~9min, 5~9min, 5~9min, 5~9min.
Preferably, flotation pulp current potential is -550mv~-450mv.
All of above dosing is based on copper-molybdenum bulk concentrate per ton.
Roughing, scan, selected one to selected five, it is single-minded sweep, essence two sweeps and belongs to floatation process.
The present invention is that big, easy-floating gangue chats is rebuild newly by clay content in copper-molybdenum potential-controlled flotation separation process
Endless form, including two reconstruction points and two circulation loops:
First reconstruction point is selected one tailing in molybdenum selected stage, and the second reconstruction point is selected two tail in molybdenum selected stage
Mine.
First circulation loop is after being scanned the ore pulp in copper-molybdenum current potential FLOTATION SEPARATION stage selected two, to sequentially enter
Selected one-it is single-minded sweep operation, the single-minded foam of scanning swept scans operation into selected two, forms a closed cycle.
Second circulation loop is by the ore pulp for scanning foam Yu selected three in copper-molybdenum current potential FLOTATION SEPARATION stage selected two
After returning to selected two operation together, scan to form a closed cycle using selected two.
The present invention has the advantages that
Ore-dressing technique of the invention passes through the middling cycle mode weight big to clay content during copper-molybdenum current potential FLOTATION SEPARATION
New building forms a kind of new reasonable copper-molybdenum current potential floatation separation process process:
(1) technique is by the first reconstruction point and first circuit, by most of easily mud scum arteries and veins in copper-cobalt ore stage
Stone is quick, timely enters copper concentrate, greatly alleviates the argillization phenomenon in molybdenum selected stage, it is ensured that the concentration ratio of molybdenum concentrate.
(2) technique further decreases the easy mud scum of selected foam entrainment by the second reconstruction point and second circuit
Change gangue, reduce it is subsequent it is selected during internal circulating load, while be conducive to improve molybdenum the rate of recovery.
(3) technique substantially reduces the cleaning technological flowasheet of molybdenum, can reduce equipment, personnel depaly and dosing, bring very
Good economic benefit.
Detailed description of the invention
Fig. 1 is the middling cycle mode restructuring processes process provided by the invention based on the separation of copper-molybdenum potential-controlled flotation
Figure.
Fig. 2 is copper-molybdenum potential-controlled flotation separating technology flow chart in the prior art.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
As shown in Figure 1, as one of the embodiment of ore-dressing technique of the invention, process flow are as follows:
(1) the copper-molybdenum bulk concentrate after reagent removal obtains molybdenum rough concentrate and copper concentrate, slightly by one roughing once purging selection
The floatation concentration select, scanned be 20~30% (weight ratios), roughing, scan amount of sodium sulfide be 15~30kg/t, thioacetic acid
Sodium dosage is 0.08~0.2kg/t.
(2) molybdenum rough concentrate carry out it is dense after, into Regrinding, grinding fineness be -0.038mm85~96%/-
0.025mm 70~85%.
(3) selected by five times by the molybdenum rough concentrate regrinded, obtain molybdenum concentrate.Wherein, selected one ore pulp is swept
Enter copper concentrate after choosing, selected one foam of scanning scans operation into selected two；After selected two ore pulp is scanned, return
A selected operation is returned, selected two foam of scanning then enters selected two operation together with selected three ore pulp.
(4) other all foams and ore pulp sequentially return.
(5) selected one~it is selected five, single-minded sweep, the floatation concentrations that essence two is swept are 12~20% (weight ratios), a selected sulphur
Change sodium dosage is 15~30kg/t, and sodium thioglycolate dosage is 0.08~0.2kg/t；Selected sodium disulfide dosage is 5~15kg/
T, sodium thioglycolate dosage are 0.02~0.08kg/t；Selected trisulfides sodium dosage is 5~15kg/t, and sodium thioglycolate dosage is
0.02~0.07kg/t, selected sodium tetrasulfide dosage are 2~10kg/t, and sodium thioglycolate dosage is 0.01~0.05kg/t, essence
Sweeping amount of sodium sulfide is 10~15kg/t, and kerosene consumption is 5~20g/t, and it is 5-15kg/t, kerosene that essence two, which sweeps amount of sodium sulfide,
Dosage is 5~15g/t.
(6) in above-mentioned steps, roughing, scan, be selected one, is selected two, is selected three, is selected four, is selected five, it is single-minded sweep, essence
Two flotation times swept are respectively 5~10min, 5~10min, 5~9min, 5~9min, 5~9min, 5~9min, 5~
9min, 5~9min, 5~9min.
For all of above dosing based on copper-molybdenum bulk concentrate per ton, flotation pulp current potential is -550mv~-450mv.
Embodiment 1
Certain regional porphyry copper mine of the quasi- Ge Er in Xinjiang, the molybdenum-bearing mineral in ore is mainly molybdenite, and copper is mainly Huang
Copper mine and bornite, gangue mineral are mainly mica, quartz and weathered feldspar, the copper-molybdenum bulk concentrate after copper-molybdenum bulk flotation
Middle molybdenum grade is 0.62%, copper grade 20.15%.
After copper-molybdenum bulk flotation main flow obtains the progress reagent removal of copper-molybdenum bulk concentrate, using the method for the present invention, by primary
Roughing once purging selection, obtains molybdenum rough concentrate and copper concentrate, and roughing, the floatation concentration scanned are respectively 22% and 20%, roughing sulphur
Change sodium dosage is 18kg/t, and sodium thioglycolate dosage is 0.1kg/t, and the roughing time is 6 minutes, and scanning amount of sodium sulfide is
15kg/t, sodium thioglycolate dosage are 0.08kg/, and scanning the time is 5 minutes；It is regrinded, is ground after the progress of molybdenum rough concentrate is dense
Mine fineness is 85%/- 0.025mm of -0.038mm 73%, and the molybdenum rough concentrate after regrinding is selected by five times, obtains molybdenum concentrate.
Wherein, the copper concentrate in preenrichment stage is entered after selected one ore pulp is scanned, selected one foam of scanning enters selected two
Scan operation；After selected two ore pulp is scanned, a selected operation is returned to, selected two scan mine of the foam then with selected three
Slurry enters selected two operation together, other all foams and ore pulp sequentially return.A selected floatation concentration is 18%, vulcanized sodium
Dosage is 15kg/t, and sodium thioglycolate dosage is 0.08kg/t, and flotation time is 6 minutes；Selected two floatation concentration is 16%, sulphur
Change sodium dosage is 10kg/t, and sodium thioglycolate dosage is 0.02kg/t, and flotation time is 6 minutes；Selected three floatation concentration is
15%, amount of sodium sulfide 8kg/t, sodium thioglycolate dosage are 0.02kg/t, and flotation time is 5 minutes；Selected four flotation is dense
Degree is 15%, amount of sodium sulfide 5kg/t, and sodium thioglycolate dosage is 0.02kg/t, and flotation time is 5 minutes；Selected five is floating
Selecting concentration is 15%, not adding medicine, and flotation time is 5 minutes；Single-minded floatation concentration of sweeping is 17%, amount of sodium sulfide 10kg/
T, kerosene consumption 10g/t, flotation time are 5 minutes；It is 15% that essence two, which sweeps floatation concentration, amount of sodium sulfide 5kg/t, kerosene
Dosage is 5g/t, and flotation time is 5 minutes.Roughing scans, is selected one, is selected two, is selected three, is selected four, is selected five, is single-minded
Sweep, the two flotation pulp current potentials swept of essence are respectively -533mv, -510mv, -521mv, -506mv, -502mv, -500mv, -
488mv、-504mv、-501mv。
Fig. 1 is shown in process flow, and test result is shown in Table 1.Fig. 2 is shown in using conventional copper-molybdenum current potential FLOTATION SEPARATION process, except selected
Five, six floatation concentrations are 15%, and amount of sodium sulfide is 5kg/t, and sodium thioglycolate dosage is 0.02kg/t, flotation time
Being is 5 minutes；Selected seven, eight floatation concentrations are 12%, and amount of sodium sulfide is 3kg/t, and sodium thioglycolate dosage is
0.01kg/t, flotation time are 4 minutes；Selected nine floatation concentration is 10%, and flotation time is 4 minutes outer, other medications
Referring to relevant parameter of the present invention, test result is shown in Table 1 for agent type and dosage.
1 different process result of table
Embodiment 2
Certain regional porphyry copper mine of Qinghai Narigongma, the molybdenum-bearing mineral in ore is mainly molybdenite, and copper is mainly
Bornite and chalcopyrite, gangue mineral are mainly quartz and mica, weathered feldspar, the copper-molybdenum mixing essence after copper-molybdenum bulk flotation
Molybdenum grade is 0.62% in mine, copper grade 20.15%.
After copper-molybdenum bulk flotation main flow obtains the progress reagent removal of copper-molybdenum bulk concentrate, using the method for the present invention, by primary
Roughing once purging selection, obtains molybdenum rough concentrate and copper concentrate, and roughing, the floatation concentration scanned are respectively 25% and 23%, roughing sulphur
Change sodium dosage is 28kg/t, and sodium thioglycolate dosage is 0.2kg/t, and the roughing time is 7 minutes, and scanning amount of sodium sulfide is
25kg/t, sodium thioglycolate dosage are 0.15kg/, and scanning the time is 6 minutes；It is regrinded, is ground after the progress of molybdenum rough concentrate is dense
Mine fineness is 88%/- 0.025mm of -0.038mm 76%, and the molybdenum rough concentrate after regrinding is selected by five times, obtains molybdenum concentrate.
Wherein, the copper concentrate in preenrichment stage is entered after selected one ore pulp is scanned, selected one foam of scanning enters selected two
Scan operation；After selected two ore pulp is scanned, a selected operation is returned to, selected two scan mine of the foam then with selected three
Slurry enters selected two operation together, other all foams and ore pulp sequentially return.A selected floatation concentration is 20%, vulcanized sodium
Dosage is 18kg/t, and sodium thioglycolate dosage is 0.08kg/t, and flotation time is 8 minutes；Selected two floatation concentration is 18%, sulphur
Change sodium dosage is 16kg/t, and sodium thioglycolate dosage is 0.05kg/t, and flotation time is 7 minutes；Selected three floatation concentration is
16%, amount of sodium sulfide 10kg/t, sodium thioglycolate dosage are 0.03kg/t, and flotation time is 6 minutes；Selected four flotation is dense
Degree is 15%, amount of sodium sulfide 8kg/t, and sodium thioglycolate dosage is 0.02kg/t, and flotation time is 5 minutes；Selected five is floating
Selecting concentration is 15%, not adding medicine, and flotation time is 5 minutes；Single-minded floatation concentration of sweeping is 19%, amount of sodium sulfide 16kg/
T, kerosene consumption 8g/t, flotation time are 6 minutes；It is 16% that essence two, which sweeps floatation concentration, amount of sodium sulfide 10kg/t, kerosene
Dosage is 5g/t, and flotation time is 5 minutes.Roughing scans, is selected one, is selected two, is selected three, is selected four, is selected five, is single-minded
Sweep, the two flotation pulp current potentials swept of essence are respectively -523mv, -512mv, -518mv, -504mv, -497mv, -493mv, -
490mv、-514mv、-505mv。
Fig. 1 is shown in process flow, and test result is shown in Table 2.Fig. 2 is shown in using conventional copper-molybdenum current potential FLOTATION SEPARATION process, except selected
Five, six floatation concentrations are 16%, and amount of sodium sulfide is 8kg/t, and sodium thioglycolate dosage is 0.04kg/t, flotation time
Being is 6 minutes；Selected seven, eight floatation concentrations are 15%, and amount of sodium sulfide is 5kg/t, and sodium thioglycolate dosage is
0.02kg/t, flotation time are 4 minutes；Selected nine floatation concentration is 12%, and flotation time is 4 minutes outer, other medications
Referring to relevant parameter of the present invention, test result is shown in Table 2 for agent type and dosage.
2 different process result of table
From Tables 1 and 2 test result it is found that being above conventional work using grade in the obtained molybdenum concentrate of present invention process
Skill, and aluminium impurity content reduces about half than common process, and impurity levels reduce by 2 percentage points or more, the selected stream of molybdenum
Journey shortens nearly half, lacks half using equipment, and motor is few, and the energy consumption of consumption is just few, so saving reduces half at instinct.
Therefore, present invention process not only substantially increases the selected concentration ratio of molybdenum concentrate, greatly effectively reduces middle sludge
Change and mechanical entrapment phenomenon has obvious superiority compared with common process.
Claims (6)
1. a kind of technique that the middling cycle mode based on the separation of copper-molybdenum potential-controlled flotation reconstructs, which is characterized in that including such as
Lower step:
1) the copper-molybdenum bulk concentrate after reagent removal is obtained into molybdenum rough concentrate and copper concentrate by one roughing once purging selection；
2) after the progress of molybdenum rough concentrate is dense, into Regrinding, grinding fineness is -0.038mm85~96%/- 0.025mm 70
~85%；
3) selected by five times of selected one to selected five by the molybdenum rough concentrate regrinded, obtain molybdenum concentrate；
It wherein, include two reconstruction points and two circulation loops in five refining process, the first reconstruction point is the molybdenum selected stage
Selected one tailing, the second reconstruction point are selected two tailing in molybdenum selected stage；
First circulation loop be after being scanned selected two ore pulp sequentially enter selected one-it is single-minded sweep operation, selected one
Foam of scanning scan operation into selected two, form a closed cycle；
Second circulation loop is to scan selected two after foam returns to selected two operation together with selected three ore pulp, then pass through
Selected two are crossed to scan to form a closed cycle；
Specifically: selected one ore pulp enters copper concentrate after being scanned, selected one foam of scanning is scanned into selected two
Operation；After selected two ore pulp is scanned, return to a selected operation, selected two scan ore pulp one of the foam then with selected three
It rises and enters selected two operation, other all foams and ore pulp sequentially return；
Selected one operation of scanning is swept to be single-minded, and selected two operation of scanning is swept for essence two.
2. the technique that the middling cycle mode as described in claim 1 based on the separation of copper-molybdenum potential-controlled flotation reconstructs, special
Sign is that it is 20~30% that the step 1) roughing, the floatation concentration scanned, which are with weight ratio meter, and vulcanized sodium use is scanned in roughing
Amount is 15~30kg/t, and sodium thioglycolate dosage is 0.08~0.2kg/t.
3. the technique that the middling cycle mode as described in claim 1 based on the separation of copper-molybdenum potential-controlled flotation reconstructs, special
Sign is that the step 1) roughing, the flotation time scanned are respectively 5~10min, 5~10min.
4. the technique that the middling cycle mode as described in claim 1 based on the separation of copper-molybdenum potential-controlled flotation reconstructs, special
Sign is, step 3) is described selected one to selected five, it is single-minded sweep, floatation concentrations that essence two is swept with weight ratio meter for 12~20%,
A selected amount of sodium sulfide is 15~30kg/t, and sodium thioglycolate dosage is 0.08~0.2kg/t；Selected sodium disulfide dosage is
5~15kg/t, sodium thioglycolate dosage are 0.02~0.08kg/t；Selected trisulfides sodium dosage is 5~15kg/t, thioacetic acid
Sodium dosage be 0.02~0.07kg/t, selected sodium tetrasulfide dosage be 2~10kg/t, sodium thioglycolate dosage be 0.01~
0.05kg/t, single-minded amount of sodium sulfide of sweeping is 10~15kg/t, and kerosene consumption is 5~20g/t, and it is 5- that essence two, which sweeps amount of sodium sulfide,
15kg/t, kerosene consumption are 5~15g/t.
5. the technique that the middling cycle mode as described in claim 1 based on the separation of copper-molybdenum potential-controlled flotation reconstructs, special
Sign is, step 3) is described selected one, it is selected two, selected three, selected four, selected five, single-minded sweep, the flotation times point that essence two is swept
It Wei not 5~9min, 5~9min, 5~9min, 5~9min, 5~9min, 5~9min, 5~9min.
6. the technique that the middling cycle mode as described in claim 1 based on the separation of copper-molybdenum potential-controlled flotation reconstructs, special
Sign is that flotation pulp current potential is -550mv~-450mv.
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| CN113117883A (en) * | 2019-12-31 | 2021-07-16 | 有研资源环境技术研究院(北京)有限公司 | Process for improving recovery rate of copper-molybdenum mixed flotation section of copper-molybdenum sulfide ore |
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| CN109939830B (en) | 2021-01-22 |
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