CN102259053A - Method for recovering iron resources in reverse flotation tailings - Google Patents
Method for recovering iron resources in reverse flotation tailings Download PDFInfo
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- CN102259053A CN102259053A CN2010105253304A CN201010525330A CN102259053A CN 102259053 A CN102259053 A CN 102259053A CN 2010105253304 A CN2010105253304 A CN 2010105253304A CN 201010525330 A CN201010525330 A CN 201010525330A CN 102259053 A CN102259053 A CN 102259053A
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Abstract
The invention relates to a technical field of recovering hematite reverse flotation tailings, in particular to a method for recovering iron resources in reverse flotation tailings. The method is characterized by comprising the steps of: subjecting the reverse flotation tailings in combined processes of stage grinding, magnetic separation-gravity separation-anion reverse flotation of the hematite to one-stage low-intensity magnetic separation and two-stage high-intensity magnetic separation so as to obtain rough concentrates, regrinding the rough concentrates till the content of the rough concentrates with granularities of 320 meshes is up to more than 91% and recovering magnetic ores through two-section low-intensity magnetic separation, the two-stage high-intensity magnetic separation-roughing, concentrating and three-stage scavenging of reverse flotation operation. According to the invention, the one-stage low-intensity magnetic separation and the one-stage high-intensity magnetic separation are firstly carried out on the reverse flotation tailings to ensure that partial tailings are abandoned; and then the grinding is carried out on concentrates after being subject to the one-stage low-intensity magnetic separation and the one-stage high-intensity magnetic separation to ensure that the regrinding amount is little and the burden of a grinding mill is light; after the regrinding, coarse grain intergrowth monomers in the reverse flotation tailings are dissociated through the two-section low-intensity magnetic separation, the two-stage high-intensity magnetic separation-the roughing, concentrating and three-stage scavenging of the reverse flotation operation so as to recover metals in the reverse flotation tailings; and therefore, the metal loss is increased and the tailings grade is reduced.
Description
Technical field
The present invention relates to reclaim hematite reverse flotation mine tailing technical field, particularly a kind of method that reclaims iron resource in the reverse flotation mine tailing.
Background technology
The lean hematite stage grinding, in magnetic separation-gravity treatment-anion reverse floatation process integration, true tailings is made up of high intensity magnetic separation mine tailing, gravity tailings, flotation tailing.Wherein the flotation tailing grade is 14～23%.When the lean hematite washability was relatively poor, the flotation tailing grade caused a large amount of metal losses through being everlasting 18～23%, and mineral resources are not fully utilized.
2006 the 7th phases, in " the platform mill tailings that assembles troops selects experimental study again " paper of " metal mine " P77-P79 publication again the mine tailing of choosing be: Anshan iron and steel plant assemble troops platform ore dressing plant " ore grinding, magnetic separation anion reverse floatation continuously "-comprehensive mine tailing, it constitutes the comprehensive product of strong tail, floating tail.The technological process of adopting is: the first step adopts gravity treatment-weak magnetic separation process flow process can obtain the recovery ore deposit of ferrous grade about 30.00 earlier; Second step was reclaimed the ore deposit again through ore grinding, low intensity magnetic separation-high intensity magnetic separation-anion reverse floatation technological process, and the first step of this technological process adopts gravity treatment-weak magnetic separation process flow process, can obtain the recovery ore deposit of ferrous grade about 30.00% earlier; In second step, this reclaims the ore deposit again through ore grinding, low intensity magnetic separation-high intensity magnetic separation-anion reverse floatation technological process, obtains the concentrate of ferrous grade about 65%.This technological process is applicable to the comprehensive mine tailing of being made up of high intensity magnetic separation mine tailing, flotation tailing, is not suitable for the hematite reverse flotation mine tailing.
Summary of the invention
The object of the invention provides a kind of method that reclaims iron resource in the reverse flotation mine tailing, magnetic a little less than comprising one section, one section strong magnetic, regrind, magnetic, two sections strong magnetic a little less than two sections, the roughly selecting of reverse flotation work, selected and three sections scan, by the reverse flotation mine tailing selected technology again, reduce the grade of reverse flotation mine tailing, reduce metal loss.
The objective of the invention is to realize by following technical proposals:
The method of iron resource in the recovery reverse flotation mine tailing of the present invention, it is characterized in that the reverse flotation mine tailing in lean hematite stage grinding, the magnetic separation-gravity treatment-anion reverse floatation process integration magnetic, one section rough concentrate that high intensity magnetic separation does not obtain a little less than one section, regrind reach more than 91% to granularity-320 order content after, a little less than two sections the roughly selecting of magnetic, two sections high intensity magnetic separation-reverse flotation works, selected and three sections scan the magnetic ore deposits of reclaiming in the reverse flotation mine tailing, specifically comprise the steps:
1) the reverse flotation mine tailing is fed one section a little less than magnetic carry out low intensity magnetic separation,
2) mine tailing of magnetic feeds one section strong magnetic a little less than one section, and one section mixed magnetic essence that magnetic and one section strong magnetic obtain a little less than a section feeds cyclone,
3) behind cyclone classification, the cyclone sand setting returns cyclone and carries out closed circuit grinding classification after ball mill is regrinded,
4) magnetic sorted a little less than the cyclone overflow fed two sections, it is concentrated that the mine tailing of magnetic feeds thickener a little less than in the of two sections, thickener underflow feeds two sections strong magnetic and sorts, the overflow of thickener enters water reclamation system, the concentrate of the concentrate of magnetic and two sections strong magnetic is merged into two sections mixed magnetic concentrate and is fed drench pit a little less than in the of two sections, the mine tailing of two sections strong magnetic is abandoned
5) two sections mixed magnetic concentrate feed roughly selecting of reverse flotation work after drench pit concentrates, and the overflow of drench pit enters water reclamation system,
6) concentrate of roughly selecting feeds selected, and the mine tailing of roughly selecting feeds one section and scans,
7) selected concentrate is the recovery concentrate, and selected mine tailing and one section concentrate of scanning turn back to together to be roughly selected, and one section mine tailing of scanning feeds two sections and scans,
8) two sections scavenger concentrates return two sections and scan, and scan mine tailing for two sections and feed three sections and scan,
9) three sections scavenger concentrates return three sections and scan, and scan mine tailing for three sections and abandon.
Described thickener is a Φ 30m periphery rotary type thickener.
The magnetic separator of the magnetic separator of described one section strong magnetic, two sections strong magnetic is the strong magnetic machine of the upright ring of pulsation.
The magnetic separator of magnetic is the low-intensity magnetic field drum magnetic separator a little less than the magnetic separator of magnetic a little less than in the of described a section, two sections.
Described ball mill is the tower grinding machine.
The flotation device of described reverse flotation work is BF flotation device and JJF flotation device.
Compare with documents " the platform mill tailings that assembles troops selects experimental study again ", raw material and technological process that choosing more of the present invention is reclaimed are all inequality:
1) raw material of the present invention is a flotation tailing, and the grade of raw ore in " stage grinding, gravity treatment, magnetic separation, anion reverse floatation " comprehensive mine tailing (heavy-tailed, strong tail, floating tail) is the flotation tailing part of 17-18%; In the documents again the raw material grade of choosing be 11% mine tailing, flow process, handling the flotation tailing of mentioning in the patent cannot.
Raw ore is thickness grading behind ore grinding, and coarse fraction carries out gravity treatment, (concentrate, mine tailing that this gravity treatment goes out have been walked gravity treatment); Fine fraction carries out magnetic separation, anion reverse floatation, reverse flotation come out mine tailing, itself is not suitable for gravity treatment, granularity is thinner, the material composition analysis result of material, its character is simple, the quartz content height is applicable to magnetic separation.
The suitable gravity treatment of the mine tailing of choosing again in the documents is the comprehensive mine tailing that sorts through continuous ore grinding, magnetic separation anion reverse floatation technology because of raw ore, and it constitutes the comprehensive product of strong tail, floating tail.In their mine tailing, also have partial material to be fit to the material that gravity treatment sorts, do not taken out.Therefore, the technology first step of their selection is gravity treatment, magnetic separation.
2) technological process of adopting in the documents is: the first step adopts gravity treatment-weak magnetic separation process flow process, can obtain the recovery ore deposit of ferrous grade about 30.00 earlier; Second step reclaimed the ore deposit and obtains concentrate through ore grinding, low intensity magnetic separation-high intensity magnetic separation-anion reverse floatation technological process again;
Technological process among the present invention: carry out weak magnetic, strong magnetic, regrind, magnetic, strong magnetic a little less than two sections, reverse floatation process, be reverse flotation mine tailing magnetic, one section rough concentrate that high intensity magnetic separation does not obtain a little less than one section, regrind reach more than 91% to granularity-320 order content after, a little less than two sections the roughly selecting of magnetic, two sections high intensity magnetic separation-reverse flotation works, selected and three sections scan the magnetic ore deposits of reclaiming in the reverse flotation mine tailing.
The invention has the beneficial effects as follows: magnetic a little less than the reverse flotation mine tailing is carried out one section earlier, one section high intensity magnetic separation are other, jettisoning part mine tailing, and the concentrate of magnetic, the concentrate regrinding of one section strong magnetic a little less than one section, the amount of regrinding is few, and the grinding machine burden is light.After regrinding, magnetic, two sections strong magnetic a little less than two sections, the roughly selecting of reverse flotation work, selected and three sections scan, with the coarse grain intergrowth monomer dissociation in the reverse flotation mine tailing, reclaim the metal in the reverse flotation mine tailing, reduce metal loss, reduce tailings grade.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As shown in Figure 1, the method of iron resource in the recovery reverse flotation mine tailing of the present invention, it is characterized in that the reverse flotation mine tailing in lean hematite stage grinding, the magnetic separation-gravity treatment-anion reverse floatation process integration magnetic, one section rough concentrate that high intensity magnetic separation does not obtain a little less than one section, regrind reach more than 91% to granularity-320 order content after, a little less than two sections the roughly selecting of magnetic, two sections high intensity magnetic separation-reverse flotation works, selected and three sections scan the magnetic ore deposits of reclaiming in the reverse flotation mine tailing, specifically comprise the steps:
1) the reverse flotation mine tailing is fed one section a little less than magnetic carry out low intensity magnetic separation,
2) mine tailing of magnetic feeds one section strong magnetic a little less than one section, and one section mixed magnetic essence that magnetic and one section strong magnetic obtain a little less than a section feeds cyclone,
3) behind cyclone classification, the cyclone sand setting returns cyclone and carries out closed circuit grinding classification after ball mill is regrinded,
4) magnetic sorted a little less than the cyclone overflow fed two sections, it is concentrated that the mine tailing of magnetic feeds thickener a little less than in the of two sections, thickener underflow feeds two sections strong magnetic and sorts, the overflow of thickener enters water reclamation system, the concentrate of the concentrate of magnetic and two sections strong magnetic is merged into two sections mixed magnetic concentrate and is fed drench pit a little less than in the of two sections, the mine tailing of two sections strong magnetic is abandoned
5) two sections mixed magnetic concentrate feed roughly selecting of reverse flotation work after drench pit concentrates, and the overflow of drench pit enters water reclamation system,
6) concentrate of roughly selecting feeds selected, and the mine tailing of roughly selecting feeds one section and scans,
7) selected concentrate is the recovery concentrate, and selected mine tailing and one section concentrate of scanning turn back to together to be roughly selected, and one section mine tailing of scanning feeds two sections and scans,
8) two sections scavenger concentrates return two sections and scan, and scan mine tailing for two sections and feed three sections and scan,
9) three sections scavenger concentrates return three sections and scan, and scan mine tailing for three sections and abandon.
Described thickener is a Φ 30m periphery rotary type thickener.
The magnetic separator of the magnetic separator of described one section strong magnetic, two sections strong magnetic is the strong magnetic machine of the upright ring of pulsation.
The magnetic separator of magnetic is the low-intensity magnetic field drum magnetic separator a little less than the magnetic separator of magnetic a little less than in the of described a section, two sections.
Described ball mill is the tower grinding machine.
The flotation device of described reverse flotation work is BF flotation device and JJF flotation device.
Embodiment
When the grade of reverse flotation mine tailing is 23.40%, when cyclone overflow product granularity reaches-320 order content and requires more than 91%, adopt the method for iron resource in the recovery reverse flotation mine tailing of the present invention, can make the grade of mine tailing reduce to 14.5%, the concentrate grade of recovery reaches 65.2%.
When the grade of reverse flotation mine tailing is 14.50%, when cyclone overflow product granularity reaches-320 order content and requires more than 91%, adopt the method for iron resource in the recovery reverse flotation mine tailing of the present invention, can make the grade of mine tailing reduce to 11.2%, the concentrate grade of recovery reaches 60.4%.
The invention has the beneficial effects as follows: magnetic a little less than the reverse flotation mine tailing is carried out one section earlier, one section high intensity magnetic separation are other, jettisoning part mine tailing, a little less than in the of one section behind the concentrate regrinding of the concentrate of magnetic, one section strong magnetic, magnetic, two sections strong magnetic a little less than two sections, the roughly selecting of reverse flotation work, selected and three sections scan, with the coarse grain intergrowth monomer dissociation in the reverse flotation mine tailing, reclaim the metal in the reverse flotation mine tailing, reduce metal loss, reduce tailings grade.
Claims (6)
1. method that reclaims iron resource in the reverse flotation mine tailing, it is characterized in that the reverse flotation mine tailing in lean hematite stage grinding, the magnetic separation-gravity treatment-anion reverse floatation process integration magnetic, one section rough concentrate that high intensity magnetic separation does not obtain a little less than one section, regrind reach more than 91% to granularity-320 order content after, a little less than two sections the roughly selecting of magnetic, two sections high intensity magnetic separation-reverse flotation works, selected and three sections scan the magnetic ore deposits of reclaiming in the reverse flotation mine tailing, specifically comprise the steps:
1) the reverse flotation mine tailing is fed one section a little less than magnetic carry out low intensity magnetic separation,
2) mine tailing of magnetic feeds one section strong magnetic a little less than one section, and one section mixed magnetic essence that magnetic and one section strong magnetic obtain a little less than a section feeds cyclone,
3) behind cyclone classification, the cyclone sand setting returns cyclone and carries out closed circuit grinding classification after ball mill is regrinded,
4) magnetic sorted a little less than the cyclone overflow fed two sections, it is concentrated that the mine tailing of magnetic feeds thickener a little less than in the of two sections, thickener underflow feeds two sections strong magnetic and sorts, the overflow of thickener enters water reclamation system, the concentrate of the concentrate of magnetic and two sections strong magnetic is merged into two sections mixed magnetic concentrate and is fed drench pit a little less than in the of two sections, the mine tailing of two sections strong magnetic is abandoned
5) two sections mixed magnetic concentrate feed roughly selecting of reverse flotation work after drench pit concentrates, and the overflow of drench pit enters water reclamation system,
6) concentrate of roughly selecting feeds selected, and the mine tailing of roughly selecting feeds one section and scans,
7) selected concentrate is the recovery concentrate, and selected mine tailing and one section concentrate of scanning turn back to together to be roughly selected, and one section mine tailing of scanning feeds two sections and scans,
8) two sections scavenger concentrates return two sections and scan, and scan mine tailing for two sections and feed three sections and scan,
9) three sections scavenger concentrates return three sections and scan, and scan mine tailing for three sections and abandon.
2. the method for iron resource in the recovery reverse flotation mine tailing according to claim 1 is characterized in that described thickener is a Φ 30m periphery rotary type thickener.
3. the method for iron resource in the recovery reverse flotation mine tailing according to claim 1 is characterized in that the magnetic separator of the magnetic separator of described one section strong magnetic, two sections strong magnetic is the strong magnetic machine of the upright ring of pulsation.
4. the method for iron resource in the recovery reverse flotation mine tailing according to claim 1 is characterized in that the magnetic separator of magnetic is the low-intensity magnetic field drum magnetic separator a little less than the magnetic separator, two sections of magnetic a little less than in the of described one section.
5. the method for iron resource in the recovery reverse flotation mine tailing according to claim 1 is characterized in that described ball mill is the tower grinding machine.
6. the method for iron resource in the recovery reverse flotation mine tailing according to claim 1, the flotation device that it is characterized in that described reverse flotation work is BF flotation device and JJF flotation device.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500455A (en) * | 2011-12-21 | 2012-06-20 | 湖北工业大学 | Tailing efficient recovery treatment method |
| CN104722391A (en) * | 2015-03-04 | 2015-06-24 | 鞍钢集团矿业公司 | Method for recycling low-concentration and micro-fine-particle hematite floatation tailings |
| CN105233972A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Sorting method for anshan-type lean iron ores |
| CN107088470A (en) * | 2017-06-16 | 2017-08-25 | 鞍钢集团矿业有限公司 | A kind of composite ore point mill, sorting, strong magnetic suspension are calcined weak magnetic separation process |
| CN107159445A (en) * | 2017-06-16 | 2017-09-15 | 鞍钢集团矿业有限公司 | A kind of iron ore composite ore point mill, sorting, magnetic-ore flotation technique |
| CN108405171A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | A kind of method that magnetic-floats process integration recycling magnetic tailing |
| CN108465552A (en) * | 2018-03-07 | 2018-08-31 | 鞍钢集团矿业有限公司 | A kind of method of single magnetic separation process recycling magnetic iron ore tailing |
| CN109225607A (en) * | 2018-09-18 | 2019-01-18 | 湖南柿竹园有色金属有限责任公司 | A kind of method of iron ore concentrate reverse flotation |
| CN109821651A (en) * | 2019-04-15 | 2019-05-31 | 宝钢集团新疆八一钢铁有限公司 | A kind of CHARACTERISTICS OF TAILINGS SAND ferro element choosing method again |
| CN110465404A (en) * | 2018-05-09 | 2019-11-19 | 中国瑞林工程技术有限公司 | The method for handling carbonate containing iron selection tailings |
| CN112517228A (en) * | 2020-11-17 | 2021-03-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering titanium from titanium-selecting tailings of vanadium titano-magnetite |
| CN112844805A (en) * | 2020-12-21 | 2021-05-28 | 鞍钢集团矿业有限公司 | Re-separation process for micro-fine particle hematite strong magnetic tailings |
| CN115921093A (en) * | 2022-12-20 | 2023-04-07 | 鞍钢集团矿业有限公司 | Separate grinding-magnetic levitation combined separation process for maghemite |
| CN115921128A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-coarse grain gravity separation regrinding and fine grain reverse flotation process |
| WO2023092331A1 (en) * | 2021-11-23 | 2023-06-01 | 鞍钢集团矿业有限公司 | Method for recovering silicon and iron from iron tailings |
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| CN201291151Y (en) * | 2008-10-31 | 2009-08-19 | 鞍钢集团矿业公司 | Novel device for recovering iron ore in flotation tailings |
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| CN101274302A (en) * | 2008-05-16 | 2008-10-01 | 东北大学 | Stepped-flotation separation method for iron ore containing carbonas |
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| CN102500455A (en) * | 2011-12-21 | 2012-06-20 | 湖北工业大学 | Tailing efficient recovery treatment method |
| CN104722391A (en) * | 2015-03-04 | 2015-06-24 | 鞍钢集团矿业公司 | Method for recycling low-concentration and micro-fine-particle hematite floatation tailings |
| CN105233972A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Sorting method for anshan-type lean iron ores |
| CN105233972B (en) * | 2015-11-05 | 2017-12-22 | 鞍钢集团矿业有限公司 | A kind of method for separating of Anshan type poor iron ore |
| CN107088470A (en) * | 2017-06-16 | 2017-08-25 | 鞍钢集团矿业有限公司 | A kind of composite ore point mill, sorting, strong magnetic suspension are calcined weak magnetic separation process |
| CN107159445A (en) * | 2017-06-16 | 2017-09-15 | 鞍钢集团矿业有限公司 | A kind of iron ore composite ore point mill, sorting, magnetic-ore flotation technique |
| CN107088470B (en) * | 2017-06-16 | 2019-05-28 | 鞍钢集团矿业有限公司 | A kind of composite ore point mill, sorting, strong magnetic-suspension roasting-weak magnetic separation process |
| CN108405171A (en) * | 2018-03-07 | 2018-08-17 | 鞍钢集团矿业有限公司 | A kind of method that magnetic-floats process integration recycling magnetic tailing |
| CN108465552A (en) * | 2018-03-07 | 2018-08-31 | 鞍钢集团矿业有限公司 | A kind of method of single magnetic separation process recycling magnetic iron ore tailing |
| CN110465404A (en) * | 2018-05-09 | 2019-11-19 | 中国瑞林工程技术有限公司 | The method for handling carbonate containing iron selection tailings |
| CN109225607A (en) * | 2018-09-18 | 2019-01-18 | 湖南柿竹园有色金属有限责任公司 | A kind of method of iron ore concentrate reverse flotation |
| CN109821651A (en) * | 2019-04-15 | 2019-05-31 | 宝钢集团新疆八一钢铁有限公司 | A kind of CHARACTERISTICS OF TAILINGS SAND ferro element choosing method again |
| CN112517228A (en) * | 2020-11-17 | 2021-03-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering titanium from titanium-selecting tailings of vanadium titano-magnetite |
| CN112517228B (en) * | 2020-11-17 | 2022-04-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering titanium from titanium-selecting tailings of vanadium titano-magnetite |
| CN112844805A (en) * | 2020-12-21 | 2021-05-28 | 鞍钢集团矿业有限公司 | Re-separation process for micro-fine particle hematite strong magnetic tailings |
| WO2023092331A1 (en) * | 2021-11-23 | 2023-06-01 | 鞍钢集团矿业有限公司 | Method for recovering silicon and iron from iron tailings |
| CN115921093A (en) * | 2022-12-20 | 2023-04-07 | 鞍钢集团矿业有限公司 | Separate grinding-magnetic levitation combined separation process for maghemite |
| CN115921128A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-coarse grain gravity separation regrinding and fine grain reverse flotation process |
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