CN102909125B - Recleaning process for section of strong magnetic tailings in mixed lean iron ores - Google Patents
Recleaning process for section of strong magnetic tailings in mixed lean iron ores Download PDFInfo
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Abstract
The invention discloses a recleaning process for a section of strong magnetic tailings in mixed lean iron ores, comprising the following steps of: tailing regrinding: adding water into a section of tailings subjected to strong magnetic separation, grinding the tailings into regrinding ore pulp with mineral aggregate proportion of 60-95% and fineness of -0.045mm, and controlling the concentration of the ore pulp at 65-75%; strong magnetic separation: adding water into the regrinding ore pulp and desliming in an ore separation box to obtain bottom ores with the ore pulp concentration of 25-35% and overflow tailings, and feeding the bottom ores into a strong magnetic separator with the magnetic field strength of 5000-20000 oersteds to obtain strong magnetic concentrates and magnetic separation tailings; spiral chute separation: screening the magnetic separation tailings through a spiral chute to obtain spiral chute concentrates with the concentration of 15-25% and spiral chute tailings; and table separation: separating the spiral chute concentrates by a table with the stroke of 8-10mm and the stroke times of 250-300 times/min to obtain table concentrates and table tailings. A regrinding, magnetic separation and recleaning process is adopted for respectively recovering large-grain and fine-grain recovering magnetic iron ores and weakly magnetic iron ores in the section of strong magnetic tailings, and therefore, the recovery rate and the concentrate grade are high. The process provided by the invention is simple and convenient, high in production efficiency, low in production cost, high in concentrate grade and recovery rate and low in tailing grade lower than 10%.
Description
Technical field
The invention belongs to ferrous metal technique of preparing field, be specifically related to the poor iron ore beneficiation technique of a kind of fine grain teeth cloth mixed type, particularly relate to one section strong magnetic spoil reclaming technique of the poor iron ore of a kind of mixed type.
Background technology
At present, the ore-dressing technique of iron ore mainly contains gravity treatment, flotation and high intensity magnetic separation or multiple ore-dressing technique use, also has the technique of low intensity magnetic separation after magnetizing roast.Because China's iron ore deposit has the feature of " poor, thin, assorted ", along with the exhaustion of high grade iron ore resources, more relate to low-grade, fine-grained disseminated grain, the bloodstone of weak magnetic and the ore-dressing practice in magnet-red iron mixing ore deposit.For this class mineral aggregate, the early stage general gravity separation technology that adopts, mainly contains jigging machine, centrifugal ore separator, spiral chute, spiral concentrator, shaking table etc., and because its ore dressing disposal ability is little, ore dressing grade is low, the rate of recovery is low and be eliminated gradually; Developed afterwards floatation process and high intensity magnetic separation process, the high intensity magnetic separation process that the direct floatation process that the oxidized paraffin wax soap of mainly take is collecting agent and the electromagnetism Horizontal ring high intensity magnetic separator of take are sorting equipment, but it sorts technical indicator and does not all reach gratifying effect.In recent years, the development of preparation equipment has driven the technique of preparing of poor and weak iron ore to have significant progress, main ore-dressing technique is to take the reverse flotation ore-dressing technique that the high intensity magnetic separation ore-dressing technique that electromagnetic pulsating high gradient magnetic separator is representative and the SH series of take is representative, especially adopt strong magnetic-flotation combined flow process that the bloodstone in some mines is sorted and reached iron concentrate grade, the rate of recovery of iron ore concentrate also obtains satisfied index, as the two sections of Continuous Grindings-weak magnetic in Diaojuntai ore dressing plant, Anshan-strong magnetic-anion reverse floatation technique, regrind-the gravity treatment of Continuous Grinding-chats in ore dressing plant, Anshan, Anshan iron and steel plant east-strong magnetic-anion reverse floatation technique, fragmentation-classification preliminary election-ore grinding-weak the magnetic of meishan iron mine ore dressing factory-strong magnetic-desulfurization floatation process, the three sections of ore grindings-weak magnetic of elder brother's steel Dahongshan Concentrator-strong magnetic technique.But the mode that one section of high-intensity magnetic separation of most of process using reaches a large amount of throwing tails is taken into account and is boosted productivity and reduce subsequent technique cost, cause one section strong magnetic to throw tail grade and be difficult to be reduced to below 10%, can not effectively improve resource utilization.Raw ore as selected in elder brother's steel Dahongshan Concentrator, in irony composition, magnetic iron ore accounts for 60%, and bloodstone (being red ore deposit) accounts for 40%, and bloodstone and magnetic iron ore are crystal stock, granularity is thinner, and part microfine crystalline substance is disseminated embedding and is distributed in gangue, wherein red ore deposit 60% disseminated grain size is at 0.05mm, and 40% disseminated grain size is at 0.02mm, therefore adopt three sections of ore grindings, weak magnetic-strong magnetic flux journey, mog-0.043mm accounts for 80%, comprehensive tailings grade 25% left and right.One section of strong magnetic tail ore deposit for a large amount of throwing tails, if can provide a kind of simple process, concentrate grade and the rate of recovery high, tailings grade is lower than 10% one section strong magnetic spoil reclaming technique, can reclaim iron ore and sort the most of irony resource in rear mine tailing, thereby improve resource utilization and the performance of enterprises.
Summary of the invention
The object of the present invention is to provide that a kind of simple process, concentrate grade and the rate of recovery are high, tailings grade is lower than one section strong magnetic spoil reclaming technique of the poor iron ore of a kind of mixed type of 10%.
The object of the present invention is achieved like this, comprise tailing regrind, high-intensity magnetic separation, spiral shell slip sort, shaking table sorts operation, be specially:
A, tailing regrind: the mine tailing after one section of high-intensity magnetic separation is added to the mineral aggregate that water mill is fine into fineness-0.045mm and account for 60 ~ 95% the ore pulp of regrinding, controlling pulp density is 65 ~ 75%;
B, high-intensity magnetic separation: the ore pulp of regrinding adds water desliming through mine-separating box, obtain ore deposit, the end and the overflow mine tailing of pulp density 25 ~ 35%, and the strong magnetic machine that magnetic field intensity is 5000 ~ 20000 oersteds is sent in ore deposit, the end, obtains high intensity magnetic mineral and magnetic tailing;
C, spiral shell slip and sort: magnetic tailing sorts through spiral chute the spiral shell that obtains concentration 15 ~ 25% and slips concentrate and Luo Liuweikuang;
D, shaking table sort: spiral shell slips concentrate and sorts and obtain tossing concentrate and tossing mine tailing through the shaking table of 8 ~ 10mm stroke, 250 ~ 300 times/min jig frequency.
The present invention adopts tailing regrind technique, makes with fine-grained disseminated grain magnetic iron ore, bloodstone and the limonite of gangue adhesion and parcel broken apartly, further improves the monomer dissociation rate in one section of strong magnetic tail ore deposit, for subsequent handling creates good conditions; Then adopt high-intensity magnetic separation technique, make the magnetic mineral that dissociates in one section of strong magnetic tail ore deposit separated with gangue, reach the object that efficiently sorts bulky grain magnetic iron ore and the weak magnetic iron ore of part; Then the mine tailing after magnetic separation is carried out to spiral chute and sort, reach and roughly select iron ore and a large amount of object of throwing tail; Finally spiral shell is slipped to the spiral shell roughly selected and slip concentrate and carry out shaking table and sort, further improve concentrate grade, finally realize efficiently sorting of the weak magnetic iron ore subparticle iron ore such as most of bloodstone, martite, limonite.The present invention adopts the recovery to one section of strong magnetic tail ore deposit bulky grain and subparticle magnetic iron ore, weak magnetic iron ore respectively of regrind-magnetic separation-gravity separation technology, and the rate of recovery and concentrate grade are high.Overcome a large amount of purifications of waste water of conventional reverse floatation process and reagent cost higher, the single gravity concentration technique rate of recovery is low, weak magnetic-centrifuge technique concentrate quality low (being on average no more than 55%), many difficult problems such as centrifuge production capacity is low, and floor space is large.The present invention has that simple process, concentrate grade and the rate of recovery are high, tailings grade is lower than 10% feature, production efficiency is high, production cost is low, can improve resource utilization and Business Economic Benefit, for the choosing again in one section of strong magnetic tail ore deposit provides a kind of effective approach.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but never in any form the present invention is limited, and any change or the improvement based on training centre of the present invention, done, all belong to protection scope of the present invention.
One section strong magnetic spoil reclaming technique of the poor iron ore of mixed type of the present invention, comprise tailing regrind, high-intensity magnetic separation, spiral shell slip sort, shaking table sorts operation, be specially:
A, tailing regrind: the mine tailing after one section of high-intensity magnetic separation is added to the mineral aggregate that water mill is fine into fineness-0.045mm and account for 60 ~ 95% the ore pulp of regrinding, controlling pulp density is 65 ~ 75%;
As poor iron ores of mixed type such as the selected raw ores of elder brother's steel Dahongshan Concentrator, in irony composition, magnetic iron ore accounts for 60%, bloodstone (being red ore deposit) accounts for 40%, bloodstone and magnetic iron ore are crystal stock, granularity is thinner, and part microfine crystalline substance is disseminated embedding and is distributed in gangue, wherein red ore deposit 60% disseminated grain size is at 0.05mm, and 40% disseminated grain size is at 0.02mm.Therefore, regrinded and be conducive to the follow-up operation of selecting again in one section of strong magnetic tail ore deposit.
B, high-intensity magnetic separation: the ore pulp of regrinding adds water desliming through mine-separating box, obtain ore deposit, the end and the overflow mine tailing of pulp density 25 ~ 35%, and the strong magnetic machine that magnetic field intensity is 5000 ~ 20000 oersteds is sent in ore deposit, the end, obtains high intensity magnetic mineral and magnetic tailing;
C, spiral shell slip and sort: magnetic tailing sorts through spiral chute the spiral shell that obtains concentration 15 ~ 25% and slips concentrate and Luo Liuweikuang;
By centrifugal force, frictional force and the flow dynamic of chute, iron mineral is heavier and be enriched in the inner side of spiral chute bottom than gangue, and lighter gangue is enriched in the outside of spiral chute bottom, completes sorting of iron ore.
D, shaking table sort: spiral shell slips concentrate and sorts and obtain tossing concentrate and tossing mine tailing through the shaking table of 8 ~ 10mm stroke, 250 ~ 300 times/min jig frequency.
The described ore pulp of regrinding does not first obtain inferior fine magnetite concentrate and weakly magnetic tailings through the low intensity magnetic separation of magnetic field intensity 1000 ~ 3000 oersteds, weakly magnetic tailings is added to water desliming through mine-separating box, obtain ore deposit, the end and the overflow mine tailing of pulp density 25 ~ 35%, the strong magnetic machine that magnetic field intensity is 5000 ~ 20000 oersteds is sent in ore deposit, the end, obtains high intensity magnetic mineral and magnetic tailing.
Described high-intensity magnetic separation comprises that strong magnetic is roughly selected and strong magnetic is selected, it is that ore deposit, the end is obtained to rough concentrate and magnetic tailing through the high-intensity magnetic separation of magnetic field intensity 5000 ~ 10000 oersteds that described strong magnetic is roughly selected, and described strong magnetic is selected is by rough concentrate, through magnetic field intensity, to be 10000 ~ 20000 oersteds high-intensity magnetic separation obtains high intensity magnetic mineral and magnetic tailing.
Described shaking table sorts and adopts classification or carry out regardless of level, technique be set to single roughly select or roughly select add selected or roughly select to add to scan or roughly select and add the selected technique of scanning that adds, described roughly select, selected, scan as one or many.
Described overflow mine tailing, Luo Liuweikuang, tossing mine tailing through concentration basin or/and concentrator is concentrated.
Described strong magnetic machine is Jones's wet strong magnetic field magnetic separator, high gradient magnetic separator or superconducting magnetic separator.
Described high intensity magnetic mineral and tossing concentrate are merged to the concentrated concentrated concentrate that obtains pulp density 15 ~ 25%.Described concentrated concentrate is to obtain after adopting oblique plate closed box concentrated.
Embodiment 1
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 23% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 95% the ore pulp of regrinding, and controls pulp density 65%; The ore pulp of regrinding is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 35% through mine-separating box, and it is that the superconducting magnetic separator of 20000 oersteds obtains high intensity magnetic mineral and magnetic tailing that magnetic field intensity is sent in ore deposit, the end; Magnetic tailing is sorted to the spiral shell that obtains concentration 25% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the concentrate that spiral shell slipped sorts and obtains tossing concentrate and tossing mine tailing through the shaking table of 10mm stroke and 250 times/min jig frequency.Shaking table sorts classification to carry out, single roughly selecting once.
Embodiment 2
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 23% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 95% the ore pulp of regrinding, and controls pulp density 65%; The ore pulp of regrinding is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 35% through mine-separating box, and it is that the strong magnetic machine of superconduction of 20000 oersteds obtains high intensity magnetic mineral and magnetic tailing that magnetic field intensity is sent in ore deposit, the end; Magnetic tailing is sorted to the spiral shell that obtains concentration 25% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the concentrate that spiral shell slipped sorts and obtains tossing concentrate and tossing mine tailing through the shaking table of 10mm stroke and 250 times/min jig frequency.Shaking table sorts regardless of level and carries out, and roughly selects once selected twice.
Embodiment 3
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 20% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 80% the ore pulp of regrinding, and controls pulp density 70%; By regrinding, the low intensity magnetic separation of ore pulp through magnetic field intensity 1000 oersteds do not obtain inferior fine magnetite concentrate and weakly magnetic tailings; Weakly magnetic tailings is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 30% through mine-separating box, it is that Jones's wet strong magnetic field magnetic separator of 7000 oersteds obtains rough concentrate and magnetic tailing that magnetic field intensity is sent in ore deposit, the end, and described rough concentrate is selected high intensity magnetic mineral and the magnetic tailing of obtaining of high gradient magnetic separator of 15000 oersteds through magnetic field intensity; Magnetic tailing is sorted to the spiral shell that obtains concentration 20% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the shaking table of concentrate 9mm stroke and 275 times/min jig frequency of spiral shell being slipped sorts and obtains tossing concentrate and tossing mine tailing; Shaking table sorts classification to carry out, and roughly selects, scans each once; High intensity magnetic mineral and tossing concentrate are merged to the concentrated concentrated concentrate that obtains pulp density 15%; Described overflow mine tailing, Luo Liuweikuang, tossing mine tailing enter tailing pit after concentration basin is concentrated.
Embodiment 4
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 18% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 70% the ore pulp of regrinding, and controls pulp density 65%; By regrinding, the low intensity magnetic separation of ore pulp through magnetic field intensity 3000 oersteds do not obtain inferior fine magnetite concentrate and weakly magnetic tailings; Weakly magnetic tailings is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 25% through mine-separating box, it is that the strong magnetic machine of high gradient of 10000 oersteds obtains rough concentrate and magnetic tailing that magnetic field intensity is sent in ore deposit, the end, and described rough concentrate is selected high intensity magnetic mineral and the magnetic tailing of obtaining of the strong magnetic of high gradient of 15000 oersteds through magnetic field intensity; Magnetic tailing is sorted to the spiral shell that obtains concentration 15% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the shaking table of concentrate 8mm stroke and 260 times/min jig frequency of spiral shell being slipped sorts and obtains tossing concentrate and tossing mine tailing; Shaking table sorts regardless of level and carries out, roughly select, selected, scan each once.High intensity magnetic mineral and tossing concentrate are merged through the concentrated concentrated concentrate that obtains pulp density 25% of oblique plate closed box; Described overflow mine tailing, Luo Liuweikuang, tossing mine tailing enter tailing pit after concentrator is concentrated.
Embodiment 5
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 28% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 85% the ore pulp of regrinding, and controls pulp density 75%; By regrinding, the low intensity magnetic separation of ore pulp through magnetic field intensity 2000 oersteds do not obtain inferior fine magnetite concentrate and weakly magnetic tailings; Weakly magnetic tailings is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 35% through mine-separating box, it is that Jones's wet high-intensity magnetic machine of 6000 oersteds obtains rough concentrate and magnetic tailing that magnetic field intensity is sent in ore deposit, the end, and described rough concentrate is selected high intensity magnetic mineral and the magnetic tailing of obtaining of the strong magnetic of high gradient of 10000 oersteds through magnetic field intensity; Magnetic tailing is sorted to the spiral shell that obtains concentration 25% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the shaking table of concentrate 10mm stroke and 280 times/min jig frequency of spiral shell being slipped sorts and obtains tossing concentrate and tossing mine tailing; Shaking table sorts classification to carry out, and roughly selects twice, once selected.High intensity magnetic mineral and tossing concentrate are merged through the concentrated concentrated concentrate that obtains pulp density 20% of oblique plate closed box; Described overflow mine tailing, Luo Liuweikuang, tossing mine tailing enter tailing pit after concentrator is concentrated.
Embodiment 6
The mine tailing that after one section of high-intensity magnetic separation of elder brother's steel Dahongshan Concentrator, grade is 32% is added to water mill, and carefully to fineness-0.045mm, to account for percentage by weight be 90% the ore pulp of regrinding, and controls pulp density 65%; By regrinding, the low intensity magnetic separation of ore pulp through magnetic field intensity 2500 oersteds do not obtain inferior fine magnetite concentrate and weakly magnetic tailings; Weakly magnetic tailings is added to ore deposit, the end and the overflow mine tailing that water desliming obtains pulp density 30% through mine-separating box, it is that the strong magnetic machine of high gradient of 8000 oersteds obtains rough concentrate and magnetic tailing that magnetic field intensity is sent in ore deposit, the end, and described rough concentrate is selected high intensity magnetic mineral and the magnetic tailing of obtaining of the strong magnetic of high gradient of 13000 oersteds through magnetic field intensity; Magnetic tailing is sorted to the spiral shell that obtains concentration 20% through oscillatory spin chute and slip concentrate and Luo Liuweikuang; Then the shaking table of concentrate 9mm stroke and 290 times/min jig frequency of spiral shell being slipped sorts and obtains tossing concentrate and tossing mine tailing; Shaking table sorts regardless of level and carries out, roughly select, selected, scan each twice; High intensity magnetic mineral and tossing concentrate are merged through the concentrated concentrated concentrate that obtains pulp density 15% of oblique plate closed box; Described overflow mine tailing, Luo Liuweikuang, tossing mine tailing enter tailing pit after concentration basin is concentrated.
Claims (8)
1. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type, it is characterized in that comprising tailing regrind, high-intensity magnetic separation, spiral shell slip sort, shaking table sorts operation, be specially:
A, tailing regrind: the mine tailing after one section of high-intensity magnetic separation is added to the mineral aggregate that water mill is fine into fineness-0.045mm and account for 60 ~ 95% the ore pulp of regrinding, controlling pulp density is 65 ~ 75%;
B, high-intensity magnetic separation: the ore pulp of regrinding adds water desliming through mine-separating box, obtain ore deposit, the end and the overflow mine tailing of pulp density 25 ~ 35%, and the strong magnetic machine that magnetic field intensity is 5000 ~ 20000 oersteds is sent in ore deposit, the end, obtains high intensity magnetic mineral and magnetic tailing;
C, spiral shell slip and sort: magnetic tailing sorts through spiral chute the spiral shell that obtains concentration 15 ~ 25% and slips concentrate and Luo Liuweikuang;
D, shaking table sort: spiral shell slips concentrate and sorts and obtain tossing concentrate and tossing mine tailing through the shaking table of 8 ~ 10mm stroke, 250 ~ 300 times/min jig frequency.
2. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1, it is characterized in that: the described ore pulp of regrinding does not first obtain inferior fine magnetite concentrate and weakly magnetic tailings through the low intensity magnetic separation of magnetic field intensity 1000 ~ 3000 oersteds, weakly magnetic tailings is added to water desliming through mine-separating box, obtain ore deposit, the end and the overflow mine tailing of pulp density 25 ~ 35%, the strong magnetic machine that magnetic field intensity is 5000 ~ 20000 oersteds is sent in ore deposit, the end, obtains high intensity magnetic mineral and magnetic tailing.
3. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1 and 2, it is characterized in that: described high-intensity magnetic separation comprises that strong magnetic is roughly selected and strong magnetic is selected, it is that ore deposit, the end is obtained to rough concentrate and magnetic tailing through the high-intensity magnetic separation of magnetic field intensity 5000 ~ 10000 oersteds that described strong magnetic is roughly selected, and described strong magnetic is selected is by rough concentrate, through magnetic field intensity, to be 10000 ~ 20000 oersteds high-intensity magnetic separation obtains high intensity magnetic mineral and magnetic tailing.
4. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1, it is characterized in that: described shaking table sorts and adopts classification or carry out regardless of level, technique be set to single roughly select or roughly select add selected or roughly select to add to scan or roughly select and add the selected technique of scanning that adds, described roughly select, selected, scan as one or many.
5. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1, is characterized in that: described overflow mine tailing, Luo Liuweikuang, tossing mine tailing through concentration basin or/and concentrator is concentrated.
6. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1, is characterized in that: described strong magnetic machine is Jones's wet strong magnetic field magnetic separator, high gradient magnetic separator or superconducting magnetic separator.
7. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 1, is characterized in that: described high intensity magnetic mineral and tossing concentrate merge the concentrated concentrated concentrate that obtains pulp density 15 ~ 25%.
8. one section strong magnetic spoil reclaming technique of the poor iron ore of mixed type according to claim 7, is characterized in that: described concentrated concentrate is to obtain after adopting oblique plate closed box concentrated.
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| CN103341399A (en) * | 2013-07-02 | 2013-10-09 | 薛海亮 | Weak-magnetism iron ore beneficiation method |
| CN104437827B (en) * | 2014-09-15 | 2017-02-15 | 中冶北方（大连）工程技术有限公司 | Specularite dust ore dressing technology |
| CN105521869A (en) * | 2016-02-02 | 2016-04-27 | 大连地拓重工有限公司 | Re-concentration method for hematite combined tailings |
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| CN106824506B (en) * | 2016-11-14 | 2017-11-17 | 中国科学院地质与地球物理研究所 | A kind of method and system using separation by shaking table apatite |
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| CN112844807A (en) * | 2020-12-21 | 2021-05-28 | 鞍钢集团矿业有限公司 | Magnetic-gravity combined recleaning process for micro-fine particle hematite strong magnetic tailings |
| 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 |
| CN115155795B (en) * | 2022-06-23 | 2023-07-14 | 昆明理工大学 | Ore dressing process of fine-particle complex perovskite and application thereof |
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| SU1037960A1 (en) * | 1981-04-22 | 1983-08-30 | Научно-исследовательский и проектный институт по обогащению и агломерации руд черных металлов "Механобрчермет" | Method of concentrating high magnetic iron ores |
| US5217171A (en) * | 1991-12-06 | 1993-06-08 | F&T Technology Corporation | Method for processing scrap of electronic instruments |
| CN101468330B (en) * | 2007-12-24 | 2012-06-06 | 鞍钢集团矿业公司 | Technique for processing mixed type iron ore |
| CN101708494B (en) * | 2008-10-31 | 2013-05-01 | 鞍钢集团矿业公司 | Method for recycling iron minerals in magnetic separated gangues |
| CN101693222A (en) * | 2009-11-02 | 2010-04-14 | 贵州大学 | Method for separating oolitic hematite |
| CN102228862B (en) * | 2010-06-01 | 2013-01-16 | 鞍钢集团矿业公司 | Novel recovering process of Anshan-type iron tailings |
| CN102259059A (en) * | 2010-11-05 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recycling iron concentrates from tailings in stage grinding, thickness sorting and gravity-magnetism-floatation procedures |
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