CN103447155B - Ore dressing method for blue chalcocite and pyrite and collecting agent used in ore dressing method - Google Patents
Ore dressing method for blue chalcocite and pyrite and collecting agent used in ore dressing method Download PDFInfo
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- CN103447155B CN103447155B CN201310372114.4A CN201310372114A CN103447155B CN 103447155 B CN103447155 B CN 103447155B CN 201310372114 A CN201310372114 A CN 201310372114A CN 103447155 B CN103447155 B CN 103447155B
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Abstract
The invention discloses a collecting agent for beneficiation of blue chalcocite and pyrite and a beneficiation method thereof, belonging to the technical field of mineral flotation separation processes. The invention adopts the flotation under the condition of low calcium, the ester-112 has better selectivity to the blue chalcocite, and the situation that the activity of the blue chalcocite is poor and the copper recovery rate is not high is avoided; using Ca 2+ lime inhibits pyrite, reduces Cu+To avoid partial pyrite being coated with Cu+Activating; under the condition of low calcium, the pipeline calcium accumulation is avoided, and the pollution of the waste water to the mine is reduced to a certain extent; the middling regrinding selection enables the blue chalcocite mineral and the pyrite to be fully dissociated, and energy conservation and emission reduction of the mine are achieved. The process can obtain high economic and technical indexes.
Description
Technical field
The invention belongs to mineral floating separation process technique field, be specifically related in a kind of nonferrous metals ore sorting process for the collecting agent of alpha chalcocite and pyrite ore dressing and beneficiation method thereof.
Technical background
At present, difficulty selects copper sulphur ore deposit to refer to the low copper of high-sulfur, high oxidation rate, the secondary degree of copper mineral is higher, the active stronger ore of pyrite, the secondary blue vitreous copper that disseminated grain size is thinner in nonferrous metals ore floatation process is separated with pyrite mainly exists following problem: 1) adopt a large amount of lime to produce many baleful consequences: pipeline scale, easy blocking, mine wastewater is seriously polluted, is unfavorable for the synthetical recovery having valency accompanying element; 2) such ore secondary alpha chalcocite thing oxidizable decomposition 4Cu
2s+9O
2=4CuSO
4+ 2Cu
2o, causes dissolving a large amount of Cu in ore pulp
+, pyrite is activated, is difficult to realize shallow crust structures; 3) secondary alpha chalcocite itself is active poor, is easily lost in mine tailing, causes the rate of recovery on the low side; 4) because disseminated grain size is comparatively thin, ore grinding cost is higher.
Summary of the invention
In order to overcome above-mentioned problems of the prior art, to the object of this invention is to provide in the thinner secondary alpha chalcocite of a kind of disseminated grain size and pyrite separation process under low calcium condition, add secondary alpha chalcocite and after pyrite all has Selection effect, follow-up segregative collecting agent carries out collecting, add Ca (ClO)
2and lime suppresses pyrite, and carry out middling ore regrinding, finally realize collecting agent that the thinner secondary alpha chalcocite of granularity is separated with pyrite and beneficiation method thereof.
For solving technical problem of the present invention, adopt following technical scheme:
Technical scheme one, a kind of collecting agent for alpha chalcocite and pyrite beneficiation method, its component is as follows:
Butyl xanthate 20 parts-40 parts
Ester-112 15 parts-30 parts
Wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.
Technical scheme two, a kind of alpha chalcocite and pyrite beneficiation method, concrete steps are as follows:
Step 1: add the lime of 1000 ~ 3000 grams of/ton of raw ores in raw ore after, be 30 ~ 35% ore pulps by the levigate obtained mass concentration of ball mill, then the collecting agent added described in the claims 1 stirs after 2 ~ 3 minutes and carries out the mixed choosing of copper sulphur, obtains copper sulphur rough concentrate;
Step 2: selectedly obtain copper-sulfide mixed concentrate through twice under copper sulphur rough concentrate ore pulp mass concentration is 20 ~ 30% conditions;
Step 3: add Ca (ClO) under copper-sulfide mixed concentrate ore pulp mass concentration is 20 ~ 30% conditions
2100 ~ 500 grams of/ton of raw ores and lime 1000 ~ 6000 grams of/ton of raw ores stir after 3 ~ 7 minutes, add the ester-112 in 2 ~ 5 grams of/ton of raw ore the claims 1 again, stir and carry out shallow crust structures after 2 ~ 3 minutes, obtain copper rough concentrate and sulphur rough concentrate, copper rough concentrate is through 1 ~ 2 selected output copper concentrate, and sulphur rough concentrate is through primary cleaning output iron concentrate;
Step 4: copper selected 1 and selected 1 mine tailing of sulphur, after being milled to fineness and being 85 ~ 95%-0.044mm, return shallow crust structures and roughly select.
Add in raw ore per ton that butyl xanthate is 20g-40g, ester-112 is 15g-30g.
The fineness of described step 1 Minerals is the 65%-75% that the mineral of 0.074mm account for whole mineral.
In described step 1, copper sulphur mixes the flotation time of choosing is 2 ~ 8 minutes.
In described step 3, the flotation time of shallow crust structures is 2 ~ 5 minutes.
The object that the thinner secondary alpha chalcocite of disseminated grain size is separated with pyrite is reached by above four steps.
The present invention adopts and carry out flotation under low calcium condition, and ester-112 pairs of alpha chalcocites have better selective, avoids alpha chalcocite itself active poor, the not high situation of copper recovery; Adopt Ca (ClO)
2+ lime suppresses pyrite, reduces Cu
+activity, avoid part pyrite by Cu
+activation; Under low calcium condition, avoid pipeline knot calcium, to a certain degree reducing waste water to mine pollution; The selection of middling ore regrinding, makes alpha chalcocite thing and pyrite be dissociated fully, achieves Mine Energy Saving and reduces discharging.Adopt this technique can obtain higher economic and technical norms.
Detailed description of the invention
embodiment 1
For a collecting agent for alpha chalcocite and pyrite beneficiation method, its component is as follows:
Butyl xanthate 20 parts, ester-112 15 parts, wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.
A kind of alpha chalcocite and pyrite beneficiation method, the secondary alpha chalcocite thinner to certain disseminated grain size carries out copper and pyritous separating flotation, and this ore head grade copper is 0.40%, and sulphur is 6.10%.Add 2000 grams, lime in 1 ton of raw ore after, being milled to fineness by wet ball mill is that the mineral of 0.074mm account for 75% of whole mineral, the ore pulp mass concentration of gained is 32%, collecting agent butyl xanthate 30 grams and ester-112 20 grams is added under this pulp density condition, stir after 2 minutes and carry out the mixed choosing of copper sulphur, flotation time is 6 minutes, obtains copper sulphur rough concentrate; Under ore pulp mass concentration is 28% condition, selectedly copper-sulfide mixed concentrate is obtained through twice at copper sulphur rough concentrate; Copper-sulfide mixed concentrate adds Ca (ClO) under ore pulp mass concentration is 25% condition
2200 grams and 4000 grams, lime, then stir after 6 minutes, then add ester-112 3 grams, stir and carry out shallow crust structures after 2 minutes, flotation time is 4 minutes, obtains copper rough concentrate and sulphur rough concentrate, copper rough concentrate is through 2 selected output copper concentrates, and sulphur rough concentrate is through 1 selected output iron concentrate; Copper selected 1 and selected 1 mine tailing of sulphur are, after the material of 0.044mm accounts for 90%, return the technological process that shallow crust structures is roughly selected through being milled to fineness.Obtaining copper concentrate copper grade is 22.81%, and copper recovery is 70.01%; Iron concentrate sulphur grade is 38.45%, and sulfur recovery rate is the mineral processing index of 70.25%.
In order to further illustrate the beneficial effect of the present embodiment, do two groups of check experiments below:
Reference examples 1
Adopt butyl xanthate and terpenic oil as blue aura copper and pyritous collecting agent and foaming agent in embodiment 1, Ca (ClO)
2+ lime carries out flotation as pyritous inhibitor and obtains copper concentrate, and the copper concentrate copper grade obtained is 18.42%, and copper recovery is 64.25%; Iron concentrate sulphur grade is 35.15%, and sulfur recovery rate is 68.53%.
Reference examples 2
Ore in embodiment 1 adopts butyl xanthate, ester-112 as blue aura copper and pyritous collector and frother, and lime carries out flotation as pyritous inhibitor and obtains copper concentrate, and the copper concentrate copper grade obtained is 19.28%, and copper recovery is 66.25%; Iron concentrate sulphur grade is 36.24%, and sulfur recovery rate is 68.98%.
embodiment 2
For a collecting agent for alpha chalcocite and pyrite beneficiation method, its component is as follows:
Butyl xanthate 40 parts, ester-112 25 parts, wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.
A kind of alpha chalcocite and pyrite beneficiation method, the secondary alpha chalcocite thinner to certain disseminated grain size carries out copper and pyritous separating flotation, and this ore head grade copper is 0.35%, and sulphur is 4.89%.Add 3000 grams, lime in 1 ton of raw ore after, being milled to fineness by wet ball mill is that the mineral of 0.074mm account for 75% of whole mineral, the ore pulp mass concentration of gained is 32%, butyl xanthate 30 grams and ester-112 25 grams is added under this pulp density condition, stir after 2 minutes and carry out the mixed choosing of copper sulphur, flotation time is 7 minutes, obtains copper sulphur rough concentrate; Under ore pulp mass concentration is 27% condition, selectedly copper-sulfide mixed concentrate is obtained through twice at copper sulphur rough concentrate; Copper-sulfide mixed concentrate adds Ca (ClO) under ore pulp mass concentration is 24% condition
2300 grams and 6000 grams, lime, then stir after 6 minutes, then add ester-112 5 grams, stir and carry out shallow crust structures after 2 minutes, flotation time is 5 minutes, obtains copper rough concentrate and sulphur rough concentrate, copper rough concentrate is through 2 selected output copper concentrates, and sulphur rough concentrate is through 1 selected output iron concentrate; Copper selected 1 and selected 1 mine tailing of sulphur are, after the material of 0.044mm accounts for 92%, return the technological process that shallow crust structures is roughly selected through being milled to fineness.Obtaining copper concentrate copper grade is 21.89%, and copper recovery is 67.43%; Iron concentrate sulphur grade is 37.94%, and sulfur recovery rate is the mineral processing index of 68.77%.
In order to further illustrate the beneficial effect of the present embodiment, do two groups of check experiments below:
Reference examples 1
Ore in example 2 adopts butyl xanthate and terpenic oil as blue aura copper and pyritous collecting agent and foaming agent, Ca (ClO)
2+ lime carries out flotation as pyritous inhibitor and obtains copper concentrate, and copper concentrate copper grade is 19.99%, and copper recovery is 64.22%; Iron concentrate sulphur grade is 36.84%, and sulfur recovery rate is 68.01%.
Reference examples 2
Ore in example 2 adopts butyl xanthate and ester-112 as blue aura copper and pyritous collector and frother, and lime carries out flotation as pyritous inhibitor and obtains copper concentrate, and copper concentrate copper grade is 20.01%, and copper recovery is 65.24%; Iron concentrate sulphur grade is 37.01%, and sulfur recovery rate is 67.69%.
embodiment 3
For a collecting agent for alpha chalcocite and pyrite beneficiation method, its component is as follows:
Butyl xanthate is 30 parts, ester-112 is 30 parts, wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.
A kind of alpha chalcocite and pyrite beneficiation method, the secondary alpha chalcocite thinner to certain disseminated grain size carries out copper and pyritous separating flotation, and this ore head grade copper is 3.92%, and sulphur is 38.84%.Add 2000 grams, lime in 1 ton of raw ore after, being milled to fineness by wet ball mill is that the mineral of 0.074mm account for 75% of whole mineral, the ore pulp mass concentration of gained is 25%, collecting agent butyl xanthate 30 grams and ester-112 20 grams is added under this pulp density condition, wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.Stir after 2 minutes and carry out the mixed choosing of copper sulphur, flotation time is 6 minutes, obtains copper sulphur rough concentrate; Under ore pulp mass concentration is 28% condition, selectedly copper-sulfide mixed concentrate is obtained through twice at copper sulphur rough concentrate; Copper-sulfide mixed concentrate adds Ca (ClO) under ore pulp mass concentration is 25% condition
2400 grams and 5000 grams, lime, then stir after 6 minutes, then add ester-112 3 grams, stir and carry out shallow crust structures after 2 minutes, flotation time is 5 minutes, obtains copper rough concentrate and sulphur rough concentrate, copper rough concentrate is through 2 selected output copper concentrates, and sulphur rough concentrate is through 1 selected output iron concentrate; Copper selected 1 and selected 1 mine tailing of sulphur are, after the material of 0.044mm accounts for 92%, return the technological process that shallow crust structures is roughly selected through being milled to fineness.Obtaining copper concentrate copper grade is 21.87%, and copper recovery is 85.44%; Iron concentrate sulphur grade is 36.81%, and sulfur recovery rate is the mineral processing index of 84.48%.
In order to further illustrate the beneficial effect of the present embodiment, do one group of check experiment below:
Reference examples 1
Ore in embodiment 3 adopts ester-112 as blue aura copper collector and frother, Ca (ClO)
2+ lime is as pyritous inhibitor, and it is that 90%-0.044mm(copper selected 1 and selected 1 mine tailing of sulphur are not regrinded that copper sulphur mixed crude concentrate is milled to fineness) carry out flotation and obtain copper concentrate, copper concentrate copper grade is 21.78%, and copper recovery is 85.36%; Iron concentrate sulphur grade is 36.89%, and sulfur recovery rate is 84.50%.
Claims (6)
1., for a collecting agent for alpha chalcocite and pyrite beneficiation method, it is characterized in that its component is as follows:
Butyl xanthate 20 parts-40 parts
Ester-112 15 parts-30 parts
Wherein ester-112 is formed by 1:1.05:1:1.02 volume ratio proportioning by O-isopropyl-N-ethyl thionic carbamate, N, N-diethyldithiocar bamic acid propionitrile ester, ammonium dibutyl dithiophosphate and J-622.
2. alpha chalcocite and a pyrite beneficiation method, is characterized in that its step is as follows:
Step 1: add the lime of 1000 ~ 3000 grams of/ton of raw ores in raw ore after, be 30 ~ 35% ore pulps by the levigate obtained mass concentration of wet ball mill, then the collecting agent added described in the claims 1 stirs after 2 ~ 3 minutes and carries out the mixed choosing of copper sulphur, obtains copper sulphur rough concentrate;
Step 2: selectedly obtain copper-sulfide mixed concentrate through twice under copper sulphur rough concentrate ore pulp mass concentration is 20 ~ 30% conditions;
Step 3: add Ca (ClO) under copper-sulfide mixed concentrate ore pulp mass concentration is 20 ~ 30% conditions
2100 ~ 500 grams of/ton of raw ores and lime 1000 ~ 6000 grams of/ton of raw ores stir after 3 ~ 7 minutes, add the ester-112 in 2 ~ 5 grams of/ton of raw ore the claims 1 again, stir and carry out shallow crust structures after 2 ~ 3 minutes, obtain copper rough concentrate and sulphur rough concentrate, copper rough concentrate is through 1 ~ 2 selected output copper concentrate, and sulphur rough concentrate is through primary cleaning output iron concentrate;
Step 4: it is, after the material of 0.044mm accounts for 85 ~ 95%, return shallow crust structures and roughly select that copper rough concentrate is milled to fineness through 1 ~ 2 selected and sulphur rough concentrate through the mine tailing that primary cleaning produces.
3. a kind of alpha chalcocite according to claim 2 and pyrite beneficiation method, is characterized in that: add in raw ore per ton that butyl xanthate is 20g-40g, ester-112 is 15g-30g.
4. a kind of alpha chalcocite according to Claims 2 or 3 and pyrite beneficiation method, is characterized in that: the fineness of described step 1 Minerals is the 65%-75% that the mineral of 0.074mm account for whole mineral.
5. a kind of alpha chalcocite according to claim 2 and pyrite beneficiation method, is characterized in that: in described step 1, copper sulphur mixes the flotation time of choosing is 2 ~ 8 minutes.
6. a kind of alpha chalcocite according to claim 2 and pyrite beneficiation method, is characterized in that: in described step 3, the flotation time of shallow crust structures is 2 ~ 5 minutes.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104259013A (en) * | 2014-08-08 | 2015-01-07 | 西北矿冶研究院 | Inhibitor for separating blue chalcocite from pyrite and beneficiation method thereof |
| CN106391318B (en) * | 2016-04-21 | 2018-11-09 | 西北矿冶研究院 | Method for sorting high-mud copper-lead oxide polymetallic ores |
| CN109482355B (en) * | 2018-11-16 | 2021-02-26 | 西北矿冶研究院 | Low-grade fine-grained copper ore flotation collector |
| CN110947523B (en) * | 2019-11-22 | 2022-05-03 | 西北矿冶研究院 | Collecting agent for recovering copper, lead and zinc minerals from iron ore dressing tailings |
| CN111298982B (en) * | 2020-03-02 | 2021-07-30 | 西部矿业股份有限公司 | High-efficiency collecting agent for copper and gold in copper smelting slag by pyrometallurgy and application of high-efficiency collecting agent |
| CN112517223B (en) * | 2020-10-27 | 2022-11-08 | 西北矿冶研究院 | Enrichment method of low-quality copper-zinc bulk concentrate |
| CN115350816A (en) * | 2022-09-14 | 2022-11-18 | 沈阳有色金属研究院有限公司 | Combined inhibitor for copper-cobalt separation and preparation method thereof |
| CN116273481A (en) * | 2023-02-16 | 2023-06-23 | 长江师范学院 | Flotation process of siderite |
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