CN102671863B - Mineral dressing machine and mineral dressing method - Google Patents

Mineral dressing machine and mineral dressing method Download PDF

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Publication number
CN102671863B
CN102671863B CN201210154566.0A CN201210154566A CN102671863B CN 102671863 B CN102671863 B CN 102671863B CN 201210154566 A CN201210154566 A CN 201210154566A CN 102671863 B CN102671863 B CN 102671863B
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sorting
wind
ore
force
air channel
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CN102671863A (en
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邹新民
邹庆
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邹新民
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Abstract

The invention discloses a mineral dressing machine. The mineral dressing machine comprises a grading drum screen and sorting mechanisms, each sorting mechanism comprises a sorting mechanism feed port, an air channel, an air inlet, a concentrate outlet, a tailing discharge port and a wind force regulator, and the number of the sorting mechanisms is the same as that of grades of the grading drum screen, so that the difficulty of dressing of low-grade impurity-containing limonite ores is solved. The invention further discloses a mineral dressing method using the mineral dressing machine. According to the mineral dressing method, raw limonite ores are subjected to particle gradation by using the grading screen, and then required ores and unwanted impurities are separated through a wind force specific gravity mineral dressing mechanism, thereby obtaining the limonite ores of an ideal grade. Thus, the mineral dressing machine and the mineral dressing method have the advantages that the investment cost on equipment is low, the process is simple, the power consumption is little, the levigation, calcinations and addition of medicaments are not required, and an effective mineral dressing effect can be achieved while the production technological process is simplified and the production cost is reduced.

Description

A kind of ore separators and beneficiation method
Technical field
The present invention relates to pneumatic separation field, refer to especially a kind of limonite ore wind-force specific gravity concentrator and the method that adopts this ore separators to carry out ore dressing.
Background technology
World's limonite resource reserve is larger, and it is not a kind of mineral, is mainly goethite, liquid drugs injection iron ore, is weak magnetic mineral, and firmness change is large, argillization very easily in broken grinding process.Owing to being subject to the restriction of the natural property of limonite, adopt physical upgrading method iron concentrate grade to be difficult to reach 60%, and be difficult to obtain higher metal recovery rate, belong to one of iron ore of complicated difficult choosing.Therefore, limonite because grade is low, scaling loss compared with large, affect the welcome that the capacity factor of a blast furnace is not smelted always, the value of its exploitation is also subject to great restriction.But because scaling loss is compared with increasing substantially greatly iron concentrate grade, and because being easy to smelting compared with loose, be also important iron ore deposit after limonite roasting.
Along with iron ore deposit high-quality and easy choosing reduces gradually, especially the fast development of China's steel and iron industry has highlighted iron ore deposit and has put upon the full stretch, therefore the efficient technique of preparing of limonite becomes the main direction of research gradually, and has obtained in recent years obvious progress.
As a kind of iron-smelting raw material, at present, limonite ore beneficiation method is divided into following three kinds of methods substantially:
1. fragmentation, ball milling, washing, then use gravity to carry out ore dressing.
2. fragmentation, ball milling, the flotation again of interpolation medicament.
3. fragmentation, balling-up, sintering, ball milling, then magnetic separation etc.
So because the special constituent of limonite is difficult to carry out sorting, the equipment investment of above-mentioned beneficiation method is large, technique is numerous and diverse, beneficiation cost is high, and low-grade limonite ore is difficult to carry out ore dressing.
Summary of the invention
In view of this, the object of the invention is to propose a kind of ore separators and beneficiation method, solve an ore dressing difficult problem for low-grade impure limonite ore.
Based on above-mentioned purpose a kind of ore separators provided by the invention, comprise classifying drum screen and sorting mechanism, described sorting mechanism comprises sorting mechanism charging aperture, air channel, air inlet, concentrate outlet, tailings discharge gate and wind-force adjuster, and the quantity of described sorting mechanism is identical with the progression of classifying drum screen;
Wherein, described sorting mechanism is positioned at the below of classifying drum screen, and the raw ore discharging opening of classifying drum screen is connected with sorting mechanism charging aperture, makes the raw ore particle of classified rotary screen classification enter respectively corresponding sorting mechanism; Described sorting mechanism charging aperture is positioned at the top in described air channel, and the one end in described air channel is provided with air inlet, and the other end is provided with tailings discharge gate; Described wind-force adjuster is positioned at air inlet one side, for regulating the wind-force in air channel; The bottom in described air channel is provided with concentrate outlet between air inlet and tailings discharge gate, after described sorting mechanism charging aperture is positioned at air inlet, before concentrate outlet.
Preferably, the downward-sloping setting in air channel between described concentrate outlet and tailings discharge gate.
Alternatively, between described concentrate outlet and tailings discharge gate, be also provided with the outlet of secondary concentrate.
Alternatively, one side the edge of described secondary concentrate outlet near the baffle plate that is provided with of tailings discharge gate.
Preferably, between the outlet of described air inlet and concentrate, be also provided with wind direction hyoplastron, and before described wind direction hyoplastron is positioned at sorting mechanism charging aperture, for regulating the wind-force direction in air channel.
Preferably, described classifying drum screen is obliquely installed, and its raw ore discharging opening is lower than raw ore charging aperture, and described classifying drum screen is three grades of rotary screens, and the quantity of described sorting mechanism is 3.
A beneficiation method of using ore separators provided by the invention, comprises the following steps:
A. limonite ore tcrude ore is carried out to fragmentation, then sent into the charging aperture of classifying drum screen;
B. the tcrude ore particle being broken is at classifying drum screen internal classification;
C. the tcrude ore through sorting cylinder sieve classification enters respectively corresponding sorting mechanism charging aperture, arrives air channel, at air inlet place, adds blast in to air channel, under, direction big or small at the wind-force of debug, carries out gravity separation; Impurity particle compared with lightweight is discharged fast by wind-force in air channel, and the limonite ore particle of heavier quality can not be discharged under the effect of wind-force, but be deposited in bottom, air channel, by wind-force, be slowly pushed to concentrate outlet discharge, remaining impurity particle is discharged by tailings discharge gate by wind-force.
Preferably, described in the maximum gauge≤10mm of the tcrude ore particle that is broken, and under classifying drum screen effect, be divided into carse, medium and small three ranks.
Alternatively, when described ore particles carries out sorting in air channel, by wind-force adjuster and/or the wind direction hyoplastron at air inlet place, wind-force size and wind-force direction in air channel are regulated, with this, decide the height of concentrate grade.
Preferably, it is characterized in that, described in the impurity particle that is discharged from before discharging, also have a small amount of limonite ore particle, by the outlet of secondary concentrate, discharge this ore particles, remaining impurity particle is discharged by tailings discharge gate by wind-force.
As can be seen from above, ore separators provided by the invention and beneficiation method, solved the ore dressing difficult problem of low-grade impure limonite ore.The present invention first by classifying screen by the tcrude ore gradation of limonite ore, then by wind-force specific gravity concentrator structure, required ore and unwanted impurity are separated, reach the limonite ore of desirable grade.Therefore, present device cost of investment is low, technique is simple, power consumption is little, it is levigate not need, calcine, add medicament, when having simplified production procedure, having reduced production cost, can reach again effective ore dressing effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ore separators of the embodiment of the present invention;
Fig. 2 is the cross section structure schematic diagram of the ore separators of the embodiment of the present invention.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
A kind of ore separators provided by the invention, described ore separators comprises classifying drum screen and sorting mechanism, described sorting mechanism comprises sorting mechanism charging aperture, air channel, air inlet, concentrate outlet, tailings discharge gate and wind-force adjuster, and the quantity of described sorting mechanism is identical with the progression of classifying drum screen.
Wherein, described sorting mechanism is positioned at the below of classifying drum screen, and the raw ore discharging opening of classifying drum screen is connected with sorting mechanism charging aperture, makes the raw ore particle of classified rotary screen classification enter respectively corresponding sorting mechanism; Described sorting mechanism charging aperture is positioned at the top in described air channel, and the one end in described air channel is provided with air inlet, and the other end is provided with tailings discharge gate; Described wind-force adjuster is positioned at air inlet one side, for regulating the wind-force in air channel; The bottom in described air channel is provided with concentrate outlet between air inlet and tailings discharge gate, after described sorting mechanism charging aperture is positioned at air inlet, before concentrate outlet.
As one embodiment of the present of invention, the structural representation of the ore separators that Fig. 1 is the embodiment of the present invention, the cross section structure schematic diagram of the ore separators that Fig. 2 is the embodiment of the present invention.In conjunction with Fig. 1 and Fig. 2, can find out, ore separators provided by the invention comprises classifying drum screen 1 and sorting mechanism 2, and described classifying drum screen 1 is three grades of rotary screens, and described sorting mechanism is 3, and is set up in parallel.
Described classifying drum screen comprises raw ore charging aperture 101, sieve nest 102 and raw ore discharging opening 103, described sorting mechanism includes sorting mechanism charging aperture 201, air channel 202, air inlet 203, concentrate outlet 205, secondary concentrate outlet 206, tailings discharge gate 207 and wind direction hyoplastron 204, described air inlet 203 1 sides are provided with wind-force adjuster, for regulating the wind-force in air channel 202.
Wherein, described sorting mechanism 2 is positioned at the below of classifying drum screen 1, and the raw ore discharging opening 103 of classifying drum screen is connected with sorting mechanism charging aperture 201, makes every grade of raw ore particle of classified rotary screen 1 classification enter respectively corresponding sorting mechanism 2.
Described sorting mechanism charging aperture 201 is positioned at the top in air channel 202, and the one end in described air channel 202 is provided with air inlet 203, and the other end is provided with tailings discharge gate 207; The bottom in described air channel 202 is provided with wind direction hyoplastron 204, concentrate outlet 205, secondary concentrate outlet 206 successively from air inlet 203 to tailings discharge gate 207 places, after described sorting mechanism charging aperture 201 is positioned at wind-force adjuster 204, before concentrate outlet 205.
Preferably, tailings discharge is convenient in the downward-sloping setting in air channel between described concentrate outlet 205 and tailings discharge gate 207.
Preferably, described classifying drum screen 1 is obliquely installed, and its raw ore discharging opening 103 is lower than raw ore charging aperture 101, in order to improve the sizing screening efficiency of raw ore particle.
Alternatively, one side the edge of described secondary concentrate outlet 206 near the baffle plate that is provided with of tailings discharge gate 207.
It is pointed out that each sorting mechanism being set up in parallel 2 is not communicated with mutually, make every grade of ore particles sorting separately in sorting mechanism 2 separately of classified rotary screen 1 classification.
Adopt above-mentioned ore separators to carry out the beneficiation method of ore dressing, comprise the following steps:
A. tcrude ore is carried out to fragmentation, make its maximum gauge≤10mm, then it is quantitatively sent into the raw ore charging aperture 101 of classifying drum screen;
B. the tcrude ore particle being broken, at the sieve nest internal classification of classifying drum screen 1, is divided into carse, medium and small three ranks;
C. pass through the tcrude ore of classifying drum screen 1 classification, each grade enters corresponding sorting mechanism charging aperture 201, arrives air channel 202 from raw ore discharging opening 103 respectively, at air inlet 203 places, add blast in to air channel 202, under the wind-force size of having debugged, direction, carry out gravity separation; In air channel 202, compared with the impurity particle of lightweight, by wind-force, discharged fast, and the limonite ore particle of heavier quality can not be discharged under the effect of wind-force, but be deposited in 202 bottoms, air channel, and be slowly pushed to concentrate outlet 205 discharges by wind-force; The impurity particle of being discharged by tailings discharge gate 207 also had a small amount of limonite ore particle before discharging, and by secondary concentrate outlet 206, discharged, and remaining impurity particle is discharged by tailings discharge gate 207 by wind-force.
When ore particles carries out sorting in air channel, wind-force adjuster that also can be by air inlet 203 1 sides and/or the size of the wind-force in 204 pairs of air channels of wind direction hyoplastron and wind-force direction regulate, and with this, decide the height of concentrate grade.
In the present embodiment, classifying drum screen 1 is three grades of rotary screens, and in actual design, can design according to the grade of required classification the progression of classifying drum screen, such as: can be also 2 grades, 4 grades or 5 grades etc.Correspondingly, also need 2 pairs of every grade of ore particles of sorting mechanism of equal number to carry out sorting.
Ore separators provided by the invention has solved an ore dressing difficult problem for low-grade impure limonite ore.The invention also discloses the beneficiation method that adopts this ore separators to carry out ore dressing, this beneficiation method first by classifying screen by the tcrude ore gradation of limonite ore, then by wind-force specific gravity concentrator structure, required ore and unwanted impurity are separated, reached the limonite ore of desirable grade.Therefore, present device cost of investment is low, technique is simple, power consumption is little, it is levigate not need, calcine, add medicament, when having simplified production procedure, having reduced production cost, can reach again effective ore dressing effect.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (2)

1. an ore separators, it is characterized in that, described ore separators comprises classifying drum screen and sorting mechanism, described sorting mechanism comprises sorting mechanism charging aperture, air channel, air inlet, concentrate outlet, tailings discharge gate and wind-force adjuster, and the quantity of described sorting mechanism is identical with the progression of classifying drum screen;
Wherein, described sorting mechanism is positioned at the below of classifying drum screen, and the raw ore discharging opening of classifying drum screen is connected with sorting mechanism charging aperture, makes the raw ore particle of classified rotary screen classification enter respectively corresponding sorting mechanism; Described sorting mechanism charging aperture is positioned at the top in described air channel, and the one end in described air channel is provided with air inlet, and the other end is provided with tailings discharge gate; Described wind-force adjuster is positioned at air inlet one side, for regulating the wind-force in air channel; The bottom in described air channel is provided with concentrate outlet between air inlet and tailings discharge gate, after described sorting mechanism charging aperture is positioned at air inlet, before concentrate outlet;
The downward-sloping setting in air channel between described concentrate outlet and tailings discharge gate, is also provided with the outlet of secondary concentrate between described concentrate outlet and tailings discharge gate, one side the edge of described secondary concentrate outlet is near the baffle plate that is provided with of tailings discharge gate;
Between the outlet of described air inlet and concentrate, be also provided with wind direction hyoplastron, and before described wind direction hyoplastron is positioned at sorting mechanism charging aperture, for regulating the wind-force direction in air channel; Described classifying drum screen is obliquely installed, and its raw ore discharging opening is lower than raw ore charging aperture, and described classifying drum screen is three grades of rotary screens, and the quantity of described sorting mechanism is 3.
2. right to use requires a beneficiation method for the ore separators described in 1, it is characterized in that, comprises the following steps:
A. limonite ore tcrude ore is carried out to fragmentation, then sent into the charging aperture of classifying drum screen;
B. the tcrude ore particle being broken is at classifying drum screen internal classification;
C. the tcrude ore through sorting cylinder sieve classification enters respectively corresponding sorting mechanism charging aperture, arrives air channel, at air inlet place, adds blast in to air channel, under, direction big or small at the wind-force of debug, carries out gravity separation; Impurity particle compared with lightweight is discharged fast by wind-force in air channel, and the limonite ore particle of heavier quality can not be discharged under the effect of wind-force, but be deposited in bottom, air channel, by wind-force, be slowly pushed to concentrate outlet discharge, remaining impurity particle is discharged by tailings discharge gate by wind-force;
Wherein, described in the maximum gauge≤10mm of the tcrude ore particle that is broken, and under classifying drum screen effect, be divided into carse, medium and small three ranks; When described ore particles carries out sorting in air channel, by wind-force adjuster and/or the wind direction hyoplastron at air inlet place, wind-force size and wind-force direction in air channel are regulated, with this, decide the height of concentrate grade; The described impurity particle being discharged from also had a small amount of limonite ore particle before discharging, and by the outlet of secondary concentrate, discharged this ore particles, and remaining impurity particle is discharged by tailings discharge gate by wind-force.
CN201210154566.0A 2012-05-17 2012-05-17 Mineral dressing machine and mineral dressing method Expired - Fee Related CN102671863B (en)

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CN103302030A (en) * 2013-02-26 2013-09-18 刘晓 Controllable-wind-force nonferrous metal ore mineral separation method
CN104550035B (en) * 2014-12-04 2016-11-23 成都迅德科技有限公司 Minerals separation machine
CN104624502A (en) * 2015-01-26 2015-05-20 绿索仕(徐州)环境科技有限公司 Technology and device for separating building garbage

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GB191017749A (en) * 1909-07-26 1910-10-06 Oskar Goettel An Apparatus for Airing or Ventilating Grain, Seeds and other Materials.
JPS4970071U (en) * 1972-10-03 1974-06-18
JP2758861B2 (en) * 1995-08-31 1998-05-28 日本電気通信システム株式会社 Digital mobile data communication system
JP3611406B2 (en) * 1996-09-06 2005-01-19 株式会社タクマ Vibrating wind sorting method and apparatus
CN2305255Y (en) * 1997-01-10 1999-01-27 德州沪平永发造纸有限公司 Separator for straw and grain
JP3682755B2 (en) * 1998-03-04 2005-08-10 株式会社小松製作所 Waste sorting device
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CN201728224U (en) * 2010-04-20 2011-02-02 胡海珊 Household refuse treatment device
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