CN102151607A - Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore - Google Patents
Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore Download PDFInfo
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- CN102151607A CN102151607A CN2010106112229A CN201010611222A CN102151607A CN 102151607 A CN102151607 A CN 102151607A CN 2010106112229 A CN2010106112229 A CN 2010106112229A CN 201010611222 A CN201010611222 A CN 201010611222A CN 102151607 A CN102151607 A CN 102151607A
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Abstract
The invention relates to a joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore, which comprises the following steps: primary ore grinding, prior floating copper, re-grinding for de-reagent, magnetic separation desulfurization iron from copper rough concentrates, copper selection from magnetic tailings and pyrite selection. A part of single square magnetic pyrites which have stronger magnetism and play a great role in copper selection interference is separated from the prior floating copper rough concentrates by the adoption of a magnetic method so as to reduce the interference to the copper selection process, and when the prior floating copper is roughly selected, iron pyrite is inhibited in low-alkali mediums by the adoption of lime and DB-5 combined inhibitors, so that the consumption of the lime is reduced, and the iron pyrite can be efficiently collected without the use of activators in the subsequent process flow of selecting pyrite from prior floating copper tailings; and by the adoption of the joint magnetic flotation sorting method, the grade of copper is larger than 18 percent and the recovery rate is larger than 74 percent in the copper concentrates; and the grade of sulfur is larger than 40 percent and the recovery rate is larger than 86 percent in pyrite concentrates.
Description
Technical field
The invention belongs to the technique of preparing field, relate to the beneficiation method that a kind of copper sulphur iron ore that contains complicated magnetic iron ore separates, particularly a kind of preferential floating copper and magnetic separation Combined Treatment contain the beneficiation method of the copper sulphur iron ore of complicated magnetic iron ore.
Background technology
For the assorting room of copper troilite thing, its key is how to realize to the efficient collecting of copper mineral and to the effective inhibition of iron sulfide mineral or the problem of rejecting.Existing pyrite (FeS in pyrites mineral in the ore
2), magnetic iron ore (Fe is arranged again
1-xS), particularly because the magnetic of magnetic iron ore and floatability when uneven, it selects influential effect bigger to copper sulphur content.In practice in the past, be that means guarantee the copper concentrate index with the inhibitor consumption that increases troilite, but the method brings difficulty for again follow-up troilite activation recovery, often causes the sulphur iron recovery lower.Therefore, when handling this type of copper sulphur ore that contains magnetic iron ore complicated and changeable, when copper sulphur effectively separated, high efficiente callback sulphur was the unsolved always ore dressing difficult problem of ore dressing field.
Handle at present in the production practices of copper sulphur ore and mostly adopt complete floating technology, select sulphur, copper sulphur to mix comprising reactivation sulphur iron behind the preferential floating copper and press down the floating two kinds of technological processes of copper of sulphur again after floating.Traditional copper sulphur content all is to add a large amount of lime in ore pulp from method, forms high-alkali high calcium ambient condition, makes pyrite, magnetic iron ore surface oxidation and absorption calcium film and hydrophilic, thereby realizes the purpose that copper sulphur effectively separates.But the activation difficulty strengthens during the pyrite flotation after the high-alkali inhibition like this, and is special for the magnetic iron ore ore that contains crystal structure type complexity, because of part Fe in the magnetic iron ore
2+Ion is by Fe
3+Ion replaces, and in order to keep the electricity price balance, the iron atom room occurs.Along with Fe
3+The increase of ion, room quantity (x value) has determined magnetic iron ore to have monocline, six sides, polymorph to be present in simultaneously to treat in the sorting ore, the variation of this crystal chemistry character makes magnetic iron ore magnetic and floatability uneven, and sort and be difficult to effectively eliminate the magnetic iron ore that the is variable condition interference effect to floating copper process under the means at the single conditioned disjunction that sorts, thereby have a strong impact on the rate of recovery of troilite, a large amount of troilite is lost in the discarded tailing, not only cause the huge waste of resource, simultaneously sulfur-bearing discarded object serious environment pollution.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, to existing simultaneously in complicated magnetic iron ore and the pyritous copper sulphur iron ore, when the invention provides a kind of sorting process that in the weak base medium, adopts preferential floating copper and magnetic separation associating and realize copper and sulphur iron effectively separates, improve the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic of the recovering effect of sulphur iron again.
The present invention solves the technical method that its technical problem adopts: a kind of method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic, and its processing step is:
The first step is a primary grinding: add the lime of 6000g/t in the copper sulphur iron ore, ore grinding to granularity accounts for 80% less than 0.074mm;
Second step was preferential floating copper: the DY copper-sulphide ores collecting agent 75g/t that adds inhibitor DB-5 750g/t and have frothing capacity concurrently in the raw material after the first step is handled carries out a copper and roughly selects, and obtains copper rough concentrate and copper rougher tailings;
The 3rd step was the reagent removal of regrinding: the active carbon that adds 167g/t in the copper rough concentrate after handling through second step reagent removal of regrinding accounts for copper coarse concentrate regrinding to granularity more than 90% less than 0.074mm;
The 4th step was copper rough concentrate magnetic separation desulfurization iron: under the 0.45T magnetic field intensity, the copper rough concentrate of regrinding after handling through the 3rd step is carried out magnetic separation, remove the easily easily floating monocline pyrrhotine of magnetic of part, reduce copper when selected easily floating magnetic iron ore to the influence of copper concentrate grade, simultaneously a part of sulphur iron ore concentrate;
The 5th step is selected for magnetic tailing copper: add inhibitor DB-4 200g/t, DB-5 300g/t, ZnSO in the magnetic tailing after handling through the 4th step
4It is selected that 750g/t, collecting agent DY 10g/t carry out first time copper;
The 6th step sorted for troilite: add butyl xanthate 40 g/t, terpenic oil 27 g/t in the preferential floating copper mine tailing after handling through second step and carry out a sulphur iron and roughly select.
Carrying out a copper to adding collecting agent DY 10g/t in the second copper rougher tailings that goes on foot after handling scans.
Adding collecting agent DY 5g/t in the mine tailing after a copper is scanned processing carries out secondary copper and scans.
Adding collecting agent DY 2.5g/t in the mine tailing after secondary copper is scanned processing carries out three copper and scans.
In a selected concentrate of copper, add inhibitor DB-5 50g/t, ZnSO
4200g/t, that collecting agent DY 2.5g/t carries out secondary copper is selected.
Do not adding under any medicament situation, selected to carry out three copper through the selected concentrate of secondary copper.
Add butyl xanthate 20 g/t, terpenic oil 10g/t in the sulphur iron rougher tailings after handling and carry out a sulphur iron sweep choosing through the 6th step.
Add lime in the first step after, the raw material pH value of adjusting primary grinding is 8-9.
The invention has the beneficial effects as follows: the present invention is according to the crystal chemistry characteristic of magnetic iron ore, i.e. magnetic iron ore (Fe
1-xS) in the crystal structure, part Fe
2+Ion is by Fe
3+Ion replaces, and in order to keep the electricity price balance, the room occurs, Fe
3+The big more room of replacement amount quantity (x value) of ion is big more, the X value has determined the magnetic iron ore changes of crystal, six sides (X value＜0.111) and two kinds of polymorphs of monocline (X Zhi ≧ 0.111) are arranged, the X value has also determined the magnetic of magnetic iron ore and floatability to change simultaneously, that the monocline pyrrhotine that the room number is many has is easily floating (promptly easily enter the copper rough concentrate with chalcopyrite and produce disturb) to enriching Cu and the characteristics of easy magnetic (being easy to adopt magnetic separation to separate), from preferential floating copper rough concentrate, adopt magnetic method cutting out partial magnetic stronger and to selecting the big monocline pyrrhotine of copper interference effect, to reduce interference to the copper refining process, and when roughly selecting, adopt preferential floating copper lime and DB-5 composite restrainer in low alkaline media (pH=8-9 when copper is roughly selected) to suppress troilite, not only reduce lime consumption, and in the subsequent technique flow process of from preferential floating copper mine tailing, selecting sulphur iron, can not use activator and troilite is carried out efficient collecting.
Copper grade is greater than 18% in the employing copper concentrate that the present invention obtained, and the rate of recovery is greater than 74%; The sulphur grade is greater than 40% in the sulphur iron ore concentrate, and the rate of recovery is greater than 86%.
Description of drawings
Fig. 1 is a technological process block-diagram of the present invention.
Fig. 2 is copper concentrate of the present invention and sulphur iron extract mine producation analysis result 1.
Fig. 3 is copper concentrate of the present invention and sulphur iron extract mine producation analysis result 2.
Fig. 4 is the regime of agent table in the example 2 of the present invention.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to Fig. 1, a kind of method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic, its processing step is:
The first step is a primary grinding: add the lime (pH=8-9) of 6000g/t in the copper sulphur iron ore, ore grinding to granularity accounts for 80% less than 0.074mm;
Second step was preferential floating copper: the DY copper-sulphide ores collecting agent 75g/t that adds inhibitor DB-5 750g/t and have frothing capacity concurrently in the raw material after the first step is handled carries out a copper and roughly selects, and obtains copper rough concentrate and copper rougher tailings; In the copper rougher tailings, add collecting agent DY 10g/t and carry out a copper and scan, in the mine tailing after a copper is scanned processing, add collecting agent DY 5g/t then and carry out secondary copper and scan; Adding collecting agent DY 2.5g/t again in the mine tailing after secondary copper is scanned processing carries out three copper and scans;
The 3rd step was the reagent removal of regrinding: the active carbon that adds 167g/t in the copper rough concentrate after handling through second step reagent removal of regrinding accounts for copper coarse concentrate regrinding to granularity more than 90% less than 0.074mm;
The 4th step was copper rough concentrate magnetic separation desulfurization iron: under the 0.45T magnetic field intensity, the copper rough concentrate of regrinding after handling through the 3rd step is carried out magnetic separation, remove the easily easily floating monocline pyrrhotine of magnetic of part, reduce copper when selected easily floating magnetic iron ore to the influence of copper concentrate grade, simultaneously a part of sulphur iron ore concentrate;
The 5th step is selected for magnetic tailing copper: add inhibitor DB-4 200g/t, DB-5 300g/t, ZnSO in the magnetic tailing after handling through the 4th step
4It is selected that 750g/t, collecting agent DY 10g/t carry out first time copper; In a selected concentrate of copper, add inhibitor DB-5 50g/t, ZnSO
4200g/t, that collecting agent DY 2.5g/t carries out secondary copper is selected; Do not adding under any medicament situation, selected to carry out three copper through the selected concentrate of secondary copper;
The 6th step sorted for troilite: add butyl xanthate 40 g/t, terpenic oil 27 g/t in the preferential floating copper mine tailing after handling through second step and carry out a sulphur iron and roughly select; In sulphur iron rougher tailings, add butyl xanthate 20 g/t, terpenic oil 10g/t and carry out a sulphur iron sweep choosing.
The present invention adopts raw ore preferential earlier floating copper behind ore grinding, the magnetic separation of regrinding gets a part of sulphur iron ore concentrate to the copper rough concentrate, magnetic tailing carries out the qualified copper concentrate of the selected acquisition of copper, preferential floating copper mine tailing efficiently selects sulphur iron need not adding under the activator situation, use this invention the raw ore of certain copper troilite mountain difference grade has been carried out case verification.
Example 1: copper sulphur iron ore raw ore cupric 0.52%, sulfur-bearing 18.66%.At first add lime raw ore to be milled to the ball mill-0.074mm accounts for 80%; Regime of agent by table 3 adds inhibitor DB-5 stirring 3 minutes, interpolation DY copper-sulphide ores collecting agent stirs and carried out preferentially floating copper (pH=8-9) in 2 minutes; Floating copper mine tailing interpolation collecting agent DY carries out three copper and scans; Preferential floating copper concentrate adds the active carbon reagent removal of regrinding, and the copper coarse concentrate regrinding accounts for about 90% to-0.074mm; Under 0.45 T magnetic field intensity, the copper concentrate of regrinding is carried out magnetic separation remove part magnetic iron ore, and get sulphur iron ore concentrate 1; Magnetic tailing adds inhibitor DB-4 stirring 5 minutes, DB-5 and ZnSO
4Stir 3 minutes, collecting agent DY and stir that to carry out a copper in 2 minutes selected; Add inhibitor DB-5 and ZnSO
4Stir 3 minutes, collecting agent DY and stir that to carry out secondary copper in 2 minutes selected; It is selected to carry out primary blank again, obtains final copper concentrate; Preferential floating copper is scanned mine tailing to be added butyl xanthate and stirs 2 minutes, terpenic oil and stir and carried out a sulphur iron in 1 minute and roughly select; Interpolation butyl xanthate stirring 2 minutes, terpenic oil stir and carried out a sulphur iron sweep choosing in 1 minute, obtain sulphur iron ore concentrate 2 and true tailings.Copper grade is 18.26% in the copper concentrate that obtains, and the rate of recovery is 74.81%; The sulphur grade is 40.10% in the sulphur iron ore concentrate (sulphur iron ore concentrate 1 and sulphur iron ore concentrate 2 merge), and the rate of recovery is 90.76%.Copper concentrate and sulphur iron extract mine producation analysis result are seen Fig. 2 and Fig. 3, and the mine full floating process flow sulphur iron ore concentrate rate of recovery is about 60%.
Example 2: to copper sulphur iron ore cupric 0.66%, the raw ore of sulfur-bearing 15.86% is used above-mentioned technology and is tested under identical step and regime of agent condition, at first add lime raw ore to be milled to the ball mill-0.074mm accounts for 80%; Stir and carried out preferentially floating copper (pH=8-9) in 2 minutes by the interpolation of the regime of agent table among Fig. 4 inhibitor DB-5 stirring 3 minutes, interpolation DY copper-sulphide ores collecting agent; Floating copper mine tailing interpolation collecting agent DY carries out three copper and scans; Preferential floating copper concentrate adds the active carbon reagent removal of regrinding, and the copper coarse concentrate regrinding accounts for about 90% to-0.074mm; Under 0.45 T magnetic field intensity, the copper concentrate of regrinding is carried out magnetic separation remove part magnetic iron ore, and get sulphur iron ore concentrate 1; Magnetic tailing adds inhibitor DB-4 stirring 5 minutes, DB-5 and ZnSO
4Stir 3 minutes, collecting agent DY and stir that to carry out a copper in 2 minutes selected; Add inhibitor DB-5 and ZnSO
4Stir 3 minutes, collecting agent DY and stir that to carry out secondary copper in 2 minutes selected; It is selected to carry out primary blank again, obtains final copper concentrate; Preferential floating copper is scanned mine tailing to be added butyl xanthate and stirs 2 minutes, terpenic oil and stir and carried out a sulphur iron in 1 minute and roughly select; Interpolation butyl xanthate stirring 2 minutes, terpenic oil stir and carried out a sulphur iron sweep choosing in 1 minute, obtain sulphur iron ore concentrate 2 and true tailings.Final copper concentrate copper grade reaches 18.17%, and the rate of recovery is 80.60%; The sulphur grade reaches 43.96% in the sulphur iron ore concentrate (sulphur iron ore concentrate 1 and sulphur iron ore concentrate 2 merge), and the rate of recovery is 86.65%.
Claims (8)
1. one kind contains the method that complicated magnetic iron ore copper sulphur iron ore magnetic floats combined sorting, it is characterized in that processing step is:
The first step is a primary grinding: add the lime of 6000g/t in the copper sulphur iron ore, ore grinding to granularity accounts for 80% less than 0.074mm;
Second step was preferential floating copper: the DY copper-sulphide ores collecting agent 75g/t that adds inhibitor DB-5 750g/t and have frothing capacity concurrently in the raw material after the first step is handled carries out a copper and roughly selects, and obtains copper rough concentrate and copper rougher tailings;
The 3rd step was the reagent removal of regrinding: the active carbon that adds 167g/t in the copper rough concentrate after handling through second step reagent removal of regrinding accounts for copper coarse concentrate regrinding to granularity more than 90% less than 0.074mm;
The 4th step was copper rough concentrate magnetic separation desulfurization iron: under the 0.45T magnetic field intensity, the copper rough concentrate of regrinding after handling through the 3rd step is carried out magnetic separation, remove the easily easily floating monocline pyrrhotine of magnetic of part, reduce copper when selected easily floating magnetic iron ore to the influence of copper concentrate grade, simultaneously a part of sulphur iron ore concentrate;
The 5th step is selected for magnetic tailing copper: add inhibitor DB-4 200g/t, DB-5 300g/t, ZnSO in the magnetic tailing after handling through the 4th step
4It is selected that 750g/t, collecting agent DY 10g/t carry out first time copper;
The 6th step sorted for troilite: add butyl xanthate 40 g/t, terpenic oil 27 g/t in the preferential floating copper mine tailing after handling through second step and carry out a sulphur iron and roughly select.
2. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 1 is characterized in that: carry out a copper to adding collecting agent DY 10g/t in the second copper rougher tailings that goes on foot after handling and scan.
3. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 2 is characterized in that: add collecting agent DY 5g/t and carry out secondary copper and scan in the mine tailing after a copper is scanned processing.
4. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 3 is characterized in that: add collecting agent DY 2.5g/t and carry out three copper and scan in the mine tailing after secondary copper is scanned processing.
5. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 1 is characterized in that: add inhibitor DB-5 50g/t, ZnSO in a selected concentrate of copper
4200g/t, that collecting agent DY 2.5g/t carries out secondary copper is selected.
6. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 5 is characterized in that: do not adding under any medicament situation, and selected to carry out three copper through the selected concentrate of secondary copper.
7. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 1 is characterized in that: add butyl xanthate 20 g/t, terpenic oil 10g/t in the sulphur iron rougher tailings after handling through the 6th step and carry out a sulphur iron sweep choosing.
8. the method that contains the floating combined sorting of complicated magnetic iron ore copper sulphur iron ore magnetic as claimed in claim 1 is characterized in that: add lime in the first step after, the raw material pH value of adjusting primary grinding is 8-9.
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| CN102441492A (en) * | 2011-09-21 | 2012-05-09 | 紫金矿业集团股份有限公司 | Method for acquiring high-quality sulfur concentrates from copper tailings |
| CN102728475A (en) * | 2012-06-19 | 2012-10-17 | 昆明理工大学 | Self-activation flotation method for component of fluid inclusion of copper sulfide ore |
| CN103272701A (en) * | 2013-06-08 | 2013-09-04 | 中国铝业股份有限公司 | High-sulfur bauxite flotation and desulphurization method |
| CN104056714A (en) * | 2014-06-26 | 2014-09-24 | 铜陵化工集团新桥矿业有限公司 | Beneficiation process for refractory micro-fine particle-graded iron-copper ore |
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| CN104759341A (en) * | 2015-03-24 | 2015-07-08 | 湖南有色金属研究院 | Method for separating copper oxide ores containing magnetic impurities |
| CN104998750A (en) * | 2015-08-12 | 2015-10-28 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN105214837A (en) * | 2015-10-14 | 2016-01-06 | 广州有色金属研究院 | One is rich in magnetic iron ore and pyritous copper sulphur ore deposit beneficiation method |
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| CN102441492A (en) * | 2011-09-21 | 2012-05-09 | 紫金矿业集团股份有限公司 | Method for acquiring high-quality sulfur concentrates from copper tailings |
| CN104718027A (en) * | 2012-04-12 | 2015-06-17 | 瓦勒股份有限公司 | A method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrhotite by exploiting the synergy of multiple depressants |
| CN104718027B (en) * | 2012-04-12 | 2017-07-18 | 淡水河谷公司 | The method for improving selectivity and the rate of recovery in the flotation of the nickel sulfide ores containing magnetic iron ore by using the synergy of various inhibitors |
| CN102728475A (en) * | 2012-06-19 | 2012-10-17 | 昆明理工大学 | Self-activation flotation method for component of fluid inclusion of copper sulfide ore |
| CN102728475B (en) * | 2012-06-19 | 2013-04-03 | 昆明理工大学 | Self-activation flotation method for component of fluid inclusion of copper sulfide ore |
| CN103272701B (en) * | 2013-06-08 | 2015-10-28 | 中国铝业股份有限公司 | A kind of floatation desulphurization method of high-sulfur bauxite |
| CN103272701A (en) * | 2013-06-08 | 2013-09-04 | 中国铝业股份有限公司 | High-sulfur bauxite flotation and desulphurization method |
| CN104056714A (en) * | 2014-06-26 | 2014-09-24 | 铜陵化工集团新桥矿业有限公司 | Beneficiation process for refractory micro-fine particle-graded iron-copper ore |
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| CN104759341A (en) * | 2015-03-24 | 2015-07-08 | 湖南有色金属研究院 | Method for separating copper oxide ores containing magnetic impurities |
| CN104759341B (en) * | 2015-03-24 | 2017-06-16 | 湖南有色金属研究院 | A kind of beneficiation method of the cupric oxide ore containing magnetic impurity |
| CN104998750A (en) * | 2015-08-12 | 2015-10-28 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN104998750B (en) * | 2015-08-12 | 2017-05-03 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN105214837B (en) * | 2015-10-14 | 2017-06-20 | 广州有色金属研究院 | A kind of copper sulphur ore deposit beneficiation method rich in magnetic iron ore and pyrite |
| CN105214837A (en) * | 2015-10-14 | 2016-01-06 | 广州有色金属研究院 | One is rich in magnetic iron ore and pyritous copper sulphur ore deposit beneficiation method |
| CN112439553A (en) * | 2019-08-29 | 2021-03-05 | 江西理工大学 | High-alkali flotation-followed-magnetism-based beneficiation method for pyrrhotite containing magnetism |
| CN111495577A (en) * | 2020-04-03 | 2020-08-07 | 北京矿冶科技集团有限公司 | Lead-zinc sulfide ore dressing method for reducing backwater influence |
| CN115415043A (en) * | 2022-07-20 | 2022-12-02 | 西北矿冶研究院 | Semi-definite distribution method of estramustine in pyrite beneficiation process |
| CN115415042A (en) * | 2022-07-20 | 2022-12-02 | 西北矿冶研究院 | Quantitative balance distribution method of estramustine in pyrite beneficiation process |
| CN115415042B (en) * | 2022-07-20 | 2024-05-17 | 西北矿冶研究院 | Quantitative balance distribution method of estrus pyrite in pyrite beneficiation process |
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Application publication date: 20110817 |