CN102909129A - Multistage efficient magnetic separation process and device for magnetite - Google Patents
Multistage efficient magnetic separation process and device for magnetite Download PDFInfo
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- CN102909129A CN102909129A CN2012103483300A CN201210348330A CN102909129A CN 102909129 A CN102909129 A CN 102909129A CN 2012103483300 A CN2012103483300 A CN 2012103483300A CN 201210348330 A CN201210348330 A CN 201210348330A CN 102909129 A CN102909129 A CN 102909129A
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Abstract
The invention relates to multistage efficient magnetic separation process and device for magnetite. The multistage efficient magnetic separation process mainly includes primary separation of raw ore and simulated water-floating scrubbing concentration of fine core. When much water accumulates on surface of the fine core and hot air drying is needed, the simulated water-floating scrubbing pneumatic-slagging dedusting procedure is adopted, and conversely, the procedure is not used. Fine magnetic separation is further adopted after the existing dry magnetic separation process of magnetic concentration. A dedusting fan (32) is used. The fine ore moves from top to bottom to be separated in the gravity direction so as to simulate the multistage magnetite magnetic separation process by water-floating scrubbing slag separation. The multistage efficient magnetic separation process and device have the advantages that water resources are saved and geological resource consumption is lowered; production cost is lowered and no construction of tailing dams is needed; dewatering with filter presses is needed and production efficiency is improved; separation of fine ore and slag is effective; and self-gravity and hot air drying is performed and a simulated water-floating pneumatic-magnetic-separation system is used according to ores with different water contents, and accordingly the scrubbing and dry separation process is an optimal process fully seamlessly covering strong and weak types of magnetite.
Description
Technical field
The present invention relates to a kind of magnetic iron ore multi-stage, efficient magnetic separation process and device thereof, be specifically related to multi-stage, efficient magnetic separation process and the device thereof of a kind of environmental protection, anhydrous, Simulated Water buoyancy wind-force magnetic separation magnetic iron ore.
Background technology
The metallurgical ironmaking cause of China is thriving and prosperous at present; the exploitation of the magnetic iron ore of one of its raw material basic industries and selecting technique are also changed to the high-end technology type by original low side extensive style, and enterprise is also all from high energy consumption, and low environmental protection turns to low energy consumption; efficient and environment-friendly type, large-scale development.Environmental protection is widelyd popularize one of energy-saving and cost-reducing technical way of application in present countries in the world especially without the hydromagnetite magnetic separation technology.In this systematic engineering of business of magnetic iron ore magnetic separation, major part still adopts two kinds of techniques at present.A kind of is to adopt gravity and magnetic force washing wet method magnetite beneficiation process, this technique is that the former magnetic iron ore fragmentation of bulk is delivered to grinding machine, grinding machine rushes the levigate washing in former magnetic ore deposit to magnetic separator, then magnetic separator separates the magnetic fine ore and enters dehydration filter press with the wet slag magnetic separation, last filter press is iron fine powder that magnetic separation is good respectively, the wet slag press dewatering is finished operation, although this technique is ripe, ore dressing is effective, but can cause a large amount of consumption of water resource and the pollution of water resource to destroy, not environmental protection, and also the filter press fault rate is high, production cost is large, the serious geological disaster hidden danger that a large amount of mine tailings that produce after the waterpower wet separation in addition cause; Another kind is simple gravity dry separation magnetite beneficiation process, it is that the former magnetic iron ore fragmentation of bulk is delivered to grinding machine, grinding machine is with the levigate breeze conveyer that naturally flows in former magnetic ore deposit, conveyer is sent levigate original ore powder into magnetic separator and is separated, nonmagnetic dried slag is dished out naturally by gravity, and the magnetic ore deposit leans on the magnetic-adsorption sorting to finished product.Though it has solved the pollution waste problem of waterpower resourses, but by from the dried slag of gravity and fine ore inferior separating effect, does not reach water wet separation water float glass process to the separating effect of breeze and slag, slag inclusion is too many in the fine ore; Also have the applicable breeze kind of this kind technique few, only strong magnetic ore deposit separating effect is relatively adapted to, when magnetic separation was carried out in weak magnetic ore deposit, the slag ore deposit was separated just poorer.Production efficiency is low in a word, and ore dressing is of low quality, thus at present effectively large tracts of land use and promote.
Summary of the invention
The objective of the invention is to address the above problem for above-mentioned, and then a kind of multi-stage, efficient magnetic separation process that utilizes environmental protection wind-force Simulated Water buoyancy to come the magnetic separation magnetic iron ore is provided.
Another object of the present invention provides a kind of special device that utilizes environmental protection wind-force Simulated Water buoyancy to come the multi-stage, efficient magnetic separation process of magnetic separation magnetic iron ore.
Technical scheme of the present invention: a kind of magnetic iron ore multi-stage, efficient magnetic separation process, it mainly is the primary election by raw ore, the Simulated Water buoyancy wind of breeze is washed selected two parts and is finished, the primary election technique of raw ore is that former strong magnet ore deposit enters ingredient conveyor and is delivered to ball mill after fragmentation, raw ore flows into elementary dry-type magnetic extractor after levigate to carry out magnetic separation and separates, isolated elementary fine ore is delivered to Simulated Water buoyancy wind through elementary conveyer and is washed the magnetic separator feeding mouth and carry out selected, dried slag flows into elementary dry residue chamber, it is to be undertaken by following process that the Simulated Water buoyancy wind of breeze is washed selected, at first: elementary fine ore is washed on the belt that magnetic separator feeding mouth 11 flow into one-level magnetic separation conveyor 13 through Simulated Water buoyancy wind, carry out the one-level magnetic separation through belt movement to one-level magnetic separation high-strength magnetic roller 14 places, elementary fine ore is subject to wind-force comb that wind that Simulated Water buoyancy wind-force adjuster 15 produces sweeps air port 16 through one-level and sweeps breeze is further separated, fall into respectively the dried slag receiver 17 of one-level magnetic separation and one-level magnetic separation breeze receiver 18, the dried slag that one-level is separated is by falling into the dried slag charge of secondary storehouse 28 from gravity, having finished Simulated Water buoyancy wind, to wash one-level selected; Then, the breeze that one-level is separated is by falling into from gravity on the belt of secondary magnetic separation conveyer 19, carry out secondary magnetic separation through belt movement to secondary magnetic separation high-strength magnetic roller 20 places, the technique of the technique of secondary magnetic separation and one-level magnetic separation is identical, at last, the dried slag of the second-order separation is by falling into the dried slag charge of secondary storehouse 28 from gravity, and the breeze of the second-order separation is by falling into from gravity on the fine ore conveyer 24, fall into fine ore feed bin 26 through feeder 25, having finished Simulated Water buoyancy wind, to wash secondary selected.
More when the breeze surface area water, adopt Simulated Water buoyancy wind to wash wind power slag-discharging dedusting operation when needing hot-air seasoning, otherwise, then without this operation.Described Simulated Water buoyancy wind is washed the wind power slag-discharging dust collecting process, realize by following operation, at first dry the heating furnace 8 generation hot blast of starting working, the dedusting fan 32 generation negative pressure of starting working, hot blast is adjusted to 160 ° by cold-hot wind control valve 9, entering into Simulated Water buoyancy wind through cold-hot wind airduct 10 washes magnetic separator feeding mouth 11 and dries, dried slag after most of the separation falls into the dried slag charge of secondary storehouse 28 by self-gravity action, the dried slag of trace and moisture molecule hot blast enter three grades of deslagging dust removers 31 through dedust air duct 30, these three grades of deslagging dust removers 31 are delivered to three grades of dried slag charge storehouses 35 with dried slag on the one hand; To purify air on the other hand and enter dedusting chimney 33 inflow atmosphere by dedusting fan 32.
A kind of special device of magnetic iron ore multi-stage, efficient magnetic separation process, raw material cabin destroyer 1, ingredient conveyor 2, ball mill 3, elementary dry-type magnetic extractor 4, elementary conveyer 7 and Simulated Water buoyancy wind are washed magnetic separator feeding mouth 11 order serial connections, the other end of elementary dry-type magnetic extractor 4 also is connected by dried slag conveyer 5 with elementary dry residue chamber 6 simultaneously, be provided with Simulated Water buoyancy wind in this device and wash magnetic separation mechanism 12, the Simulated Water buoyancy wind on these mechanism 12 tops is washed magnetic separator feeding mouth 11 and also is connected with cold-hot wind airduct 10, and cold-hot wind airduct 10 is connected with oven dry heating furnace 8 by cold-hot wind control valve 9; The dried slag charge of the secondary storehouse 28 that described Simulated Water buoyancy wind is washed magnetic separation mechanism 12 lower ends is connected with an end of three grades of deslagging dust removers 31 by dedust air duct 30, the other end of this deduster 31 is connected with dedusting fan 32, dedusting fan 32 is connected with dedusting chimney 33, and the lower end of described three grades of deslagging dust removers 31 is connected with three grades of dry residue chambers 35 by three grades of dried slag conveyers 34.
Described Simulated Water buoyancy wind is washed in the main body of magnetic separation mechanism 12 and is disposed with from top to bottom one-level magnetic separation conveyor 13, secondary magnetic separation conveyer 19, fine ore conveyer 24, at one-level magnetic separation conveyor 13, the same end of secondary magnetic separation conveyer 19 is respectively arranged with one-level magnetic separation high-strength magnetic roller 14, secondary magnetic separation high-strength magnetic roller 20, near one-level magnetic separation high-strength magnetic roller 14, be provided with one-level and sweep air port 16, the dried slag receiver 17 of one-level magnetic separation and one-level magnetic separation breeze receiver 18, near secondary magnetic separation high-strength magnetic roller 20, be provided with secondary and sweep air port 21, the dried slag receiver 22 of secondary magnetic separation and secondary magnetic separation breeze receiver 23, the passage of secondary magnetic separation breeze receiver 23 lower ends is connected with fine ore conveyer 24, fine ore conveyer 24 and feeder 25, fine ore feed bin 26 order serial connections, the dried slag receiver 17 of one-level magnetic separation places the dried slag charge of secondary storehouse 28 with the end of the passage of the dried slag receiver of secondary magnetic separation 22 lower ends.
Described one-level is swept air port 16, secondary is swept the outlet that air port 21 is arranged on two branch roads in the Simulated Water buoyancy wind-force adjuster 15.
The present invention compared with prior art has following beneficial effect: 1. saved water resource, reduced geological resource consumption; 2. reduce production cost and need not to build tailing dam; 3. need not the filter press dehydration, improved production efficiency; 4. the good separating effect of breeze and slag; 5. because the blast that used variable frequency regulating speed control, wind speed, the adjusting of air quantity, the variety classes characteristic that adapts to breeze is just stronger; 6. adopted from gravity and hot-air seasoning for the ore deposit of different in moisture content, Simulated Water buoyancy wind-force magnetic separation system makes wind wash the optimised process that dry separation craft has reached the strong and weak magnetic of seamless all standing ore deposit mineral.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing:
As shown in Figure 1: multi-stage, efficient magnetic separation process and the device thereof of a kind of environmental protection, anhydrous, Simulated Water buoyancy wind-force magnetic separation magnetic iron ore, it mainly is to wash selected two parts by the Simulated Water buoyancy wind of the primary election of raw ore, breeze to finish.
First: the broken elementary dry separation of the material loading of raw ore: former strong magnet ore deposit enters ingredient conveyor 2 after by 1 fragmentation of raw material cabin destroyer, be delivered to magnetic iron ore ball mill 3 by ingredient conveyor 2 again, raw ore flows into elementary dry-type magnetic extractor 4 after being breeze through ball mill 3 is levigate, original ore powder is isolated dried slag through elementary dry-type magnetic extractor 4 and is partly flowed into dried slag conveyer 5, dried slag conveyer 5 is delivered to elementary dry residue chamber 6 with dried slag, elementary dry-type magnetic extractor 4 isolated elementary fine ores flow into elementary conveyer 7, elementary conveyer 7 is sent breeze into Simulated Water buoyancy wind and is washed magnetic separator feeding mouth 11 and enter wind and wash selectedly, has finished primary election technique.
Second portion: the Simulated Water buoyancy of breeze is washed selected from gravity direction wind, it is by 11.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29, each several part mechanism forms, wash on the magnetic separation mechanism 12 at Simulated Water buoyancy wind with the airtight welding assembly of steel structure: the breeze of elementary dry separation is washed magnetic separator feeding mouth 11 through Simulated Water buoyancy wind and is entered, drop on the one-level magnetic separation conveyor 13, primary magnetic ore dressing powder continues along with conveyer belt moves to one-level magnetic separation high-strength magnetic roller 14 places, the wind that is subject to 15 generations of Simulated Water buoyancy wind-force adjuster is swept the thin effect of sweeping of air port 16 wind-force with thin the sweeping of the further separation of breeze through one-level, breeze and the dried slag of residue are subjected to one-level to sweep air port 16 wind-force combing effect power, from gravity, separate with one-level magnetic separation high-strength magnetic roller 14 magneticactions, fall into respectively the dried slag receiver 17 of one-level magnetic separation and one-level magnetic separation breeze receiver 18, fall into the dried slag of the dried slag receiver 17 of one-level magnetic separation after the separation by fall into the dried slag charge of secondary storehouse 28 from gravity, fall into the breeze of one-level magnetic separation breeze receiver 18 after the separation, by fall into secondary magnetic separation conveyer 19 from gravity, and travel forward with conveyer, during breeze motion secondary magnetic separation high-strength magnetic roller 20, be subjected to secondary to sweep air port 21 wind-force and dredge the effect of sweeping, the dried slag self-gravity action of the high-strength magnetic roller magneticaction of secondary magnetic separation high-strength magnetic roller 20 and breeze, breeze is done further meticulous the separation with the dried slag of residue, dried slag after the meticulous separation of secondary falls into the dried slag of the dried slag receiver 22 of secondary magnetic separation by fall into the dried slag charge of secondary storehouse 28 from gravity by falling into the dried slag receiver 22 of secondary magnetic separation from gravity along the parabola direction after the separation.Breeze after the meticulous separation of secondary is inhaled by the high-strength magnetic roller magneticaction of secondary magnetic separation high-strength magnetic roller 20 and is thrown to secondary magnetic separation breeze receiver 23, breeze by falling into fine ore conveyer 24 from gravity, is transported to feeder 25 with fine ore conveyer 24 in secondary magnetic separation breeze receiver 23; Breeze continues by falling into fine ore feed bin 26 from gravity, simulated at last water buoyancy wind and washes magnetic separator concentrate powder storehouse conveyer 27 and be delivered to the material storehouse and finish the fine ore hand work.The dried slag that falls into the dried slag charge of secondary storehouse 28 through the dried slag receiver 17 of one-level magnetic separation, the dried slag receiver 22 of secondary magnetic separation simulated water buoyancy wind and washes the dried slag charge of magnetic separator secondary warehouse conveyer 29 and be delivered to dry slag bin and finish second portion technique.
More when the breeze surface area water, need the breeze of hot-air seasoning to adopt this operation, the breeze surface area water is few, does not affect Mineral separation, without this operation.
Third part: Simulated Water buoyancy wind is washed wind power slag-discharging dedusting and deslagging.This operation be by; 8.9.10.11.17.22.28.30.31.32.33.34.35.36. each mechanism forms.Oven dry heating furnace 8 is started working when selected breeze surface area water is more; Hot blast is adjusted in wind-warm syndrome about 160 ° by cold-hot wind control valve 9, entering Simulated Water buoyancy wind through cold-hot wind airduct 10 washes and carries out hot-air seasoning in the magnetic separator feeding mouth 11, the hot blast of moisture molecule is by the dried slag receiver 17 of one-level magnetic separation, the dried slag receiver 22 of secondary magnetic separation enters the dried slag charge of secondary storehouse 28, most of dried slag falls into 28 bottoms, the dried slag charge of secondary storehouse at self-gravity action, the dried slag of trace and moisture molecule hot blast enter three grades of deslagging dust removers 31 through dedust air duct 30, the dust-laden hot blast has carried out the wind slag through three grades of deslagging dust removers 31 to be separated, and purifies wind and enters dedusting chimney 33 by dedusting fan 32 dedusting wind negative pressure graviational interactions; The dried slag that separates falls into three grades of dried slag conveyers 34; Conveyer is delivered to three grades of dried slag charge storehouses 35 with dried slag; Wash three grades of dried slag charges of magnetic separator warehouse conveyer 36 by Simulated Water buoyancy wind and deliver to the material storehouse, finished whole technique.
Claims (6)
1. magnetic iron ore multi-stage, efficient magnetic separation process, it mainly is to wash selected two parts by the Simulated Water buoyancy wind of the primary election of raw ore, breeze to finish, the primary election technique of raw ore is that former strong magnet ore deposit enters ingredient conveyor and is delivered to ball mill after fragmentation, raw ore flows into elementary dry-type magnetic extractor after levigate to carry out magnetic separation and separates, isolated elementary fine ore is delivered to Simulated Water buoyancy wind through elementary conveyer and is washed the magnetic separator feeding mouth and carry out selected, dried slag flows into elementary dry residue chamber
It is characterized in that:
It is to be undertaken by following process that the Simulated Water buoyancy wind of breeze is washed selected, at first: elementary fine ore is washed magnetic separator feeding mouth (11) through Simulated Water buoyancy wind and is flow on the belt of one-level magnetic separation conveyor (13), locate to carry out the one-level magnetic separation through belt movement to one-level magnetic separation high-strength magnetic roller (14), elementary fine ore is subject to wind-force comb that wind that Simulated Water buoyancy wind-force adjuster (15) produces sweeps air port (16) through one-level and sweeps breeze is further separated, fall into respectively the dried slag receiver of one-level magnetic separation (17) and one-level magnetic separation breeze receiver (18), the dried slag that one-level is separated is by falling into the dried slag charge of secondary storehouse (28) from gravity, having finished Simulated Water buoyancy wind, to wash one-level selected; Then, the breeze that one-level is separated is by falling into from gravity on the belt of secondary magnetic separation conveyer (19), locate to carry out secondary magnetic separation through belt movement to secondary magnetic separation high-strength magnetic roller (20), the technique of the technique of secondary magnetic separation and one-level magnetic separation is identical, at last, the dried slag of the second-order separation is by fall into the dried slag charge of secondary storehouse (28) from gravity, the breeze of the second-order separation is by falling into from gravity on the fine ore conveyer (24), fall into fine ore feed bin (26) through feeder (25), having finished Simulated Water buoyancy wind, to wash secondary selected.
2. a kind of magnetic iron ore multi-stage, efficient magnetic separation process according to claim 1 is characterized in that: more when the breeze surface area water, and adopt Simulated Water buoyancy wind to wash wind power slag-discharging dedusting operation when needing hot-air seasoning, otherwise, then without this operation.
3. a kind of magnetic iron ore multi-stage, efficient magnetic separation process according to claim 2, it is characterized in that: described Simulated Water buoyancy wind is washed the wind power slag-discharging dust collecting process, realize by following operation, at first dry heating furnace (8) the generation hot blast of starting working, dedusting fan (32) the generation negative pressure of starting working, hot blast is adjusted to 160 ° by cold-hot wind control valve (9), entering into Simulated Water buoyancy wind through cold-hot wind airduct (10) washes magnetic separator feeding mouth (11) and dries, dried slag after most of the separation falls into the dried slag charge of secondary storehouse (28) by self-gravity action, the dried slag of trace and moisture molecule hot blast enter three grades of deslagging dust removers (31) through dedust air duct (30), these three grades of deslagging dust removers (31) are delivered to three grades of dried slag charge storehouses (35) with dried slag on the one hand; To purify air on the other hand and enter dedusting chimney (33) inflow atmosphere by dedusting fan (32).
4. special device of realizing magnetic iron ore multi-stage, efficient magnetic separation process claimed in claim 1, raw material cabin destroyer (1), ingredient conveyor (2), ball mill (3), elementary dry-type magnetic extractor (4), elementary conveyer (7) and Simulated Water buoyancy wind are washed magnetic separator feeding mouth (11) order serial connection, the other end of elementary dry-type magnetic extractor (4) also is connected by dried slag conveyer (5) with elementary dry residue chamber (6) simultaneously
It is characterized in that:Be provided with Simulated Water buoyancy wind in this device and wash magnetic separation mechanism (12), the Simulated Water buoyancy wind on this mechanism (12) top is washed magnetic separator feeding mouth (11) and also is connected with cold-hot wind airduct (10), and cold-hot wind airduct (10) is connected with oven dry heating furnace (8) by cold-hot wind control valve (9); The dried slag charge of the secondary storehouse (28) that described Simulated Water buoyancy wind is washed magnetic separation mechanism (12) lower end is connected with an end of three grades of deslagging dust removers (31) by dedust air duct (30), the other end of this deduster (31) is connected with dedusting fan (32), dedusting fan (32) is connected with dedusting chimney (33), and the lower end of described three grades of deslagging dust removers (31) is connected with three grades of dry residue chambers (35) by three grades of dried slag conveyers (34).
5. the special device of a kind of magnetic iron ore multi-stage, efficient magnetic separation process according to claim 4,
It is characterized in that:Described Simulated Water buoyancy wind is washed in the main body of magnetic separation mechanism (12) and is disposed with from top to bottom one-level magnetic separation conveyor (13), secondary magnetic separation conveyer (19), fine ore conveyer (24), in one-level magnetic separation conveyor (13), the same end of secondary magnetic separation conveyer (19) is respectively arranged with one-level magnetic separation high-strength magnetic roller (14), secondary magnetic separation high-strength magnetic roller (20), near one-level magnetic separation high-strength magnetic roller (14), be provided with one-level and sweep air port (16), the dried slag receiver of one-level magnetic separation (17) and one-level magnetic separation breeze receiver (18), near secondary magnetic separation high-strength magnetic roller (20), be provided with secondary and sweep air port (21), the dried slag receiver of secondary magnetic separation (22) and secondary magnetic separation breeze receiver (23), the passage of secondary magnetic separation breeze receiver (23) lower end is connected with fine ore conveyer (24), fine ore conveyer (24) and feeder (25), fine ore feed bin (26) order serial connection, the dried slag receiver of one-level magnetic separation (17) places the dried slag charge of secondary storehouse (28) with the end of the passage of the dried slag receiver of secondary magnetic separation (22) lower end.
6. the special device of a kind of magnetic iron ore multi-stage, efficient magnetic separation process according to claim 5,
It is characterized in that:Described one-level is swept air port (16), secondary is swept the outlet that air port (21) is arranged on two branch roads in the Simulated Water buoyancy wind-force adjuster (15).
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| CN201210348330.0A CN102909129B (en) | 2012-09-19 | 2012-09-19 | A kind of magnetic iron ore multi-stage, efficient magnetic separation process and device thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105013607A (en) * | 2015-06-19 | 2015-11-04 | 攀枝花钢城集团有限公司 | Magnetic separation powder recovery device |
| CN105855042A (en) * | 2016-02-25 | 2016-08-17 | 徐浩军 | Magnetic separation system |
| WO2016127899A1 (en) * | 2015-02-15 | 2016-08-18 | 胡沿东 | Ore dressing system |
| WO2016127900A1 (en) * | 2015-02-15 | 2016-08-18 | 胡沿东 | Ore dressing system |
| WO2016127870A1 (en) * | 2015-02-15 | 2016-08-18 | 胡沿东 | Ore sorting system |
| CN106824529A (en) * | 2017-01-13 | 2017-06-13 | 宋当建 | A kind of overhead transmission line ceramic insulator pug processes Aided Machine |
| CN110548724A (en) * | 2019-08-28 | 2019-12-10 | 王宗宝 | siderite pretreatment equipment |
| CN112807819A (en) * | 2020-12-22 | 2021-05-18 | 河北钢铁集团矿业有限公司 | Handle filter-pressing magnet separator of iron ore sewage |
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| CN110548724A (en) * | 2019-08-28 | 2019-12-10 | 王宗宝 | siderite pretreatment equipment |
| CN112807819A (en) * | 2020-12-22 | 2021-05-18 | 河北钢铁集团矿业有限公司 | Handle filter-pressing magnet separator of iron ore sewage |
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