CN102671755B - Gravity selection-screening process additionally arranged before reverse flotation operation of hematite - Google Patents
Gravity selection-screening process additionally arranged before reverse flotation operation of hematite Download PDFInfo
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- CN102671755B CN102671755B CN 201210136537 CN201210136537A CN102671755B CN 102671755 B CN102671755 B CN 102671755B CN 201210136537 CN201210136537 CN 201210136537 CN 201210136537 A CN201210136537 A CN 201210136537A CN 102671755 B CN102671755 B CN 102671755B
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Abstract
The invention relates to a gravity selection-screening process additionally arranged before a reverse flotation operation of hematite. The gravity selection-screening process comprises the step that weak magnetic and strong magnetic mixed ore concentrates are fed into a big concentrated well to concentrate before a reverse flotation operation, and the gravity selection-screening process is characterized in that the overflow of the big concentrated well is subjected to a purification treatment and is used as circulation water, the underflow of the concentration of the big concentrated well is fed into a gravity selection spiral chute for sorting, the screw essence at a grade of 67-67.5 percent of the gravity selection spiral chute is used as final ore concentrates, the middle ore in the gravity selection spiral chute returns to the big concentrated well to combine with mixed magnetic essence, the tail ore of the gravity selection spiral chute is fed to a high-frequency shaking screen for classification, materials on the high-frequency shaking screen are applied as tail ore to mix with flotation ore to be final tail ore, materials under the high-frequency shaking screen are fed into a second thickener, the overflow of the second thickener is subjected to the purification treatment and is used as circulation water, and the underflow of the secondary concentration is fed to the flotation operation. The gravity selection-screening process has the advantages that the gravity spiral chute for sorting and the high-frequency shaking screen for classification are added after the big concentrated well, the production of gravity selection ore concentrates is effectively increased, the treatment amount on flotation operation is reduced, and the production cost on flotation is lowered.
Description
Technical field
The invention belongs to iron ore and sort technical field, set up gravity treatment-sieving technology before especially relating to a kind of hematite reverse flotation operation.
Background technology
at present, China's rhombohedral iron ore beneficiation technics adopts stage grinding more, coarse and fine separation, gravity treatment-strong magnetic-anion reverse floatation technique, as shown in Figure 1, red iron ore concentrate by this explained hereafter is comprised of gravity concentrate and flotation concentrate two parts, for the red iron ore concentrate TFe grade that makes this explained hereafter reaches more than 67.0%, the ratio of its gravity concentrate and flotation concentrate is generally 3:7 or 4:6, because flotation treating capacity ratio is high, so there is following shortcoming: the one, the flotation operation treating capacity causes greatly reagent consumption, power consumption, thermal energy consumption is high, be unfavorable for reducing production costs, the 2nd, the medicament that flotation is used can cause environmental pollution to a certain degree, considers from the angle of environmental protection, should reduce floating agent dosage as far as possible, the 3rd, flotation flowsheet is a thick essence, for reducing the flotation tailing grade, is provided with three sections and scans operation, because flotation flowsheet is long, causes beneficiating efficiency not high, the 4th, the flotation operation influence factor is more, easily causes the index fluctuation, is unfavorable for stablizing the flotation concentrate quality and improves metal recovery rate.Number of patent application is 200810010237.2 " a kind of pre-sieving technology added before flotation operation ", this technique can be removed the coarse fraction that enters flotation operation, improve the flotation Beneficiation Feed Grade, improve the flotation operation disposal ability, reduce floating agent consumption, but there is following shortcoming in this technique: the one, after flotation is concentrated to the ore deposit process, thickener underflow is because concentration is larger, adopt vibratory sieve classification meeting to cause classification efficiency not high, thereby internal circulating load increases, and the application apparatus number of units is more; The 2nd, flotation easily enters with the upper amount of sieve and can not get recovery in mine tailing to there being the larger high-grade ore particle of granularity in the ore deposit.Therefore, set up gravity treatment-sieving technology before a kind of hematite reverse flotation operation of the present invention, can increase gravity concentrate output, directly throw tail by high frequency vibrating screen again, significantly reduce the flotation operation treating capacity, thereby reduce floating agent consumption, alleviate floating agent to the pollution of environment, improve beneficiating efficiency, reduce the flotation production cost.
Summary of the invention
The purpose of this invention is to provide a kind of before the hematite reverse flotation operation, set up gravity treatment-sieving technology and process flotation to the ore deposit, can increase gravity concentrate output, directly throw tail by high frequency vibrating screen again, set up gravity treatment-sieving technology before realizing significantly reducing the hematite reverse flotation operation of flotation operation treating capacity.
The objective of the invention is to realize by following technical proposals:
according to setting up gravity treatment-sieving technology before a kind of hematite reverse flotation operation of the present invention, comprise grade 42～48%,-200 order grain size contents〉90%, concentration is 20%～30% weak magnetic, strong magnetic bulk concentrate feeds concentrated large well and concentrates before flotation operation, the overflow that it is characterized in that concentrated large well is carried out purified treatment and is used as ring water, concentrated large well concentration is that 50%～60% underflow feeds spiral chute reselection and carries out sorting, the grade of its spiral chute reselection is that 67.0～67.5% spiral shell essence feeds filtration operation as final concentrate and carries out processed, the grade of spiral chute reselection is that 45～55% chats turns back to concentrated large well and the merging of mixed magnetic essence, the concentration of spiral chute reselection is that 25～35% mine tailing feeds high frequency vibrating screen and carries out classification, its sieve aperture scope 0.08～0.15mm, the on-the-sieve material of its high frequency vibrating screen is mixed into true tailings as mine tailing and flotation tailing,-200 order grain size contents〉98%, grade is that the undersize material of 32～40% high frequency vibrating screen feeds the secondary concentration machine, the overflow of described secondary concentration machine is carried out purified treatment and is used as recirculated water, secondary concentration machine concentration is that 50～60% underflow feeds flotation operation and carries out flotation to the ore deposit case.
Advantage of the present invention:
Set up after concentrated large well due to the present invention that spiral chute reselection carries out sorting and high frequency vibrating screen carries out classification, effectively increase gravity concentrate output, reduce the flotation operation treating capacity, thereby reduce floating agent consumption, alleviate floating agent to the pollution of environment, improve beneficiating efficiency, reduce the flotation production cost.
Description of drawings
Fig. 1 is the process chart of former hematite reverse flotation operation.
Fig. 2 sets up gravity treatment-sieving technology flow chart before hematite reverse flotation operation of the present invention.
The specific embodiment
Further illustrate the specific embodiment of the present invention below in conjunction with accompanying drawing.
as shown in Figure 2, set up gravity treatment-sieving technology before a kind of hematite reverse flotation operation of the present invention, comprise grade 42～48%,-200 order grain size contents〉90%, concentration is 20%～30% weak magnetic, strong magnetic bulk concentrate feeds concentrated large well and concentrates before flotation operation, the overflow that it is characterized in that concentrated large well is carried out purified treatment and is used as ring water, concentrated large well concentration is that 50%～60% underflow feeds spiral chute reselection and carries out sorting, the grade of its spiral chute reselection is that 67.0～67.5% spiral shell essence feeds filtration operation as final concentrate and carries out processed, the grade of spiral chute reselection is that 45～55% chats turns back to concentrated large well and the merging of mixed magnetic essence, the concentration of spiral chute reselection is that 25～35% mine tailing feeds high frequency vibrating screen and carries out classification, its sieve aperture scope 0.08～0.15mm, the on-the-sieve material of its high frequency vibrating screen is mixed into true tailings as mine tailing and flotation tailing,-200 order grain size contents〉98%, grade is that the undersize material of 32～40% high frequency vibrating screen feeds the secondary concentration machine, the overflow of described secondary concentration is carried out purified treatment and is used as recirculated water, secondary concentration concentration is that 50～60% underflow feeds flotation operation and carries out flotation to the ore deposit case.The present invention has set up after concentrated large well that spiral chute reselection carries out sorting and high frequency vibrating screen carries out classification, effectively increase gravity concentrate output, reduce the flotation operation treating capacity, thereby reduce floating agent consumption, alleviate floating agent to the pollution of environment, improve beneficiating efficiency, reduce the flotation production cost.
Claims (1)
1. set up gravity treatment-sieving technology before a hematite reverse flotation operation, comprise grade 42～48%,-200 orders, grain size content〉90%, concentration is 20%～30% weak magnetic, strong magnetic bulk concentrate feeds concentrated large well and concentrates before flotation operation, the overflow that it is characterized in that concentrated large well is carried out purified treatment and is used as recirculated water, concentrated large well concentration is that 50%～60% underflow feeds spiral chute reselection and carries out sorting, the grade of its spiral chute reselection is that 67.0～67.5% spiral shell essence feeds filtration operation as final concentrate and carries out processed, the grade of spiral chute reselection is that 45～55% chats turns back to concentrated large well and the merging of mixed magnetic concentrate, the concentration of spiral chute reselection is that 25～35% mine tailing feeds high frequency vibrating screen and carries out classification, its sieve aperture scope 0.08～0.15mm, the on-the-sieve material of its high frequency vibrating screen is mixed into true tailings as mine tailing and flotation tailing,-200 orders, grain size content〉98%, grade is that the undersize material of 32～40% high frequency vibrating screen feeds the secondary concentration machine, the overflow of secondary concentration is carried out purified treatment and is used as recirculated water, secondary concentration concentration is that 50～60% underflow feeds flotation operation and carries out flotation to the ore deposit case.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103272680B (en) * | 2013-06-13 | 2014-12-10 | 鞍钢集团矿业公司 | Gravity regrinding technology capable of improving balling performance of hematite ore concentrates |
| CN103447147B (en) * | 2013-09-05 | 2015-05-13 | 鞍钢集团矿业公司 | Novel low grade hematite ore concentration and water purification process |
| CN103949318B (en) * | 2014-04-25 | 2016-06-22 | 中蓝连海设计研究院 | The spun yarn evenness bulk flotation method of low grade silicon calcium collophanite |
| CN104874462B (en) * | 2015-06-12 | 2017-11-03 | 鞍钢集团矿业有限公司 | The pre-selection of fine grain teeth cloth composite ore coarse grain, magnetic-floating sorting process |
| CN106994385A (en) * | 2017-05-17 | 2017-08-01 | 内蒙古科技大学 | A kind of selective reducing mechanism of ore and method |
| CN111250271B (en) * | 2019-12-18 | 2021-11-16 | 安徽金日晟矿业有限责任公司 | Mineral separation process for realizing low-temperature reverse flotation of iron ore |
| CN112844817B (en) * | 2020-11-20 | 2022-06-17 | 武定源重原本科技有限公司 | Efficient high-quality beneficiation method combining gravity separation and screening by using spiral beneficiation equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274301A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Process of gravity separation, fine sieve and reconcentration for lean hematite |
| CN101428248A (en) * | 2008-11-04 | 2009-05-13 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for recycling specularite |
| CN101491787A (en) * | 2008-01-25 | 2009-07-29 | 鞍钢集团矿业公司 | Pre-sieving technology added before flotation operation |
| CN101927209A (en) * | 2009-06-24 | 2010-12-29 | 鞍钢集团矿业公司 | Benefication technology of extra poor hematite |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7255793B2 (en) * | 2001-05-30 | 2007-08-14 | Cort Steven L | Methods for removing heavy metals from water using chemical precipitation and field separation methods |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274301A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Process of gravity separation, fine sieve and reconcentration for lean hematite |
| CN101491787A (en) * | 2008-01-25 | 2009-07-29 | 鞍钢集团矿业公司 | Pre-sieving technology added before flotation operation |
| CN101428248A (en) * | 2008-11-04 | 2009-05-13 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for recycling specularite |
| CN101927209A (en) * | 2009-06-24 | 2010-12-29 | 鞍钢集团矿业公司 | Benefication technology of extra poor hematite |
Non-Patent Citations (2)
| Title |
|---|
| BF-T型浮选机在赤铁矿反浮选作业中的应用;马自飞等;《金属矿山》;20060115(第01期);第83～85页 * |
| 马自飞等.BF-T型浮选机在赤铁矿反浮选作业中的应用.《金属矿山》.2006,(第01期),第83～85页. |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |