CN104984815B - A kind of wet type beneficiation method - Google Patents
A kind of wet type beneficiation method Download PDFInfo
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- CN104984815B CN104984815B CN201510282465.5A CN201510282465A CN104984815B CN 104984815 B CN104984815 B CN 104984815B CN 201510282465 A CN201510282465 A CN 201510282465A CN 104984815 B CN104984815 B CN 104984815B
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Abstract
The invention discloses a kind of wet type beneficiation method, comprising: mineral aggregate and water are fed refiner; Drive selected cylinder to rotate around its center axis, obtain ore pulp and do not stop to stir and rolling in selected cylinder; By field generator for magnetic, magnetic field is applied to ore pulp, make the selected mineral grain in slurry attach on the inwall of selected cylinder; By the sorter being arranged on selected tube inner chamber, ore pulp is accurately sorted; By the magnetic field that circumferentially arranges at selected cylinder and sorter, the selected mineral in ore pulp are be combined with each other in whipping process, after forming magnetic group and/or magnetic linkage, along with the rotation of selected cylinder moves upward always, arrive feeding zone; Make in feeding zone mineral fall to splicing groove, and leave refiner via this splicing groove; Other material except selected mineral in ore pulp enters the tailing groove of refiner bottom selected tube inner chamber, enters tailing induction system.
Description
Technical field
What the present invention relates to mineral sorts with selected, more specifically, relates to a kind of sorting process for mineral aggregate or mine tailing of wet type.
Background technology
Mineral resources are important support of the national economic development, are also one of key elements that human society is survived, development can not lack.Generally speaking, mineral resources, from its initial geology rock ore deposit to the every field being finally applied to society, need to process three links through exploitation, ore dressing and goods.Along with abundant ore source is increasingly exhausted, the poor thin assorted feature increasingly significant of ore mineral, makes mineral processing technology seem particularly important in the exploitation process of mineral resources.In mineral resources, the useful constituent content of most ore is low, mineral composition is complicated, has to pass through ore dressing process and just can be isolated, and improves valuable mineral component content, to arrive the requirement of next step smelting and process technology.
Ore dressing, as a ripe industrial technology, has the history of last 100 years.But when abundant ore source reduces gradually, existing technique of preparing and means exist wastes serious problem for mineral resources.
Because all kinds of metalliferous mineral exists with the form of mutual association, in the mineral that a kind of content is high, go back the mineral that association has other one or more content relatively low.Such as, also association may there be sulphur ore deposit, copper mine, silicon ore deposit etc. mineral in iron ore.The Mineral Processing Industry of current China, only carry out screening for a kind of mineral that content is relatively high to purify, the relatively low mineral of other content are all lost as the discharge of tailing waste thing, the operation of again purifying is done to all kinds of metalliferous minerals contained in mine tailing by nobody or enterprise, cause available, the loss of the metalliferous mineral that has valency in a large number, waste, a large amount of tailing heaps is released and is polluted surrounding enviroment.
At present, in tailings glass, do not have effective resource to renovate and resource reclaim means yet.The mine tailing of China is stored in tailing dam mainly with natural packing method, not only to occupy a large amount of soils, pollute the environment of mining area and surrounding area, form potential safety hazard, also cause a large amount of valuable metal and nonmetal resource loss simultaneously, become the serious restraining factors of mine development.Therefore, be badly in need of a kind of effective technology and resource of tailings fully utilized and reduces discharging, make it to turn waste into wealth, turn harm into good, thus improve the ecological environment, improve resource utilization, promote Mining Sustainable Development.
Existing process cannot realize carrying out again effectively again extracting to valuable resource various in mine tailing, metalliferous material that is useful, that have valency is in a large number caused to be discharged in tailings with non-metallic material, cause energy consumption large, the useful metal rate of recovery is low, recovery grade is low, causes the waste of a large amount of metal and the secondary pollution to surrounding enviroment.
Such as, in common magnetic selection method: ore enters body by the charging aperture of magnetic separator, be discharged to on barrow band equably, and deliver in the gapped magnetic field below disk by belt, weak magnetic mineral is subject to magneticaction, be drawn onto on the pointed tooth of disk, and the both sides of belt are brought to disc rotary, herein because magnetic field intensity sharply declines, then under the effect of gravity and centrifugal force, drop in the trough of the magnetic product of belt both sides, and non-magnetic product is transported to mine tailing end by belt and is entered in the trough of non-magnetic product.This ore dressing mode can waste much effective mineralogical composition, still containing much valuable mineralogical composition in mine tailing.
Summary of the invention
In order to solve the problem, be badly in need of a kind of method that can improve beneficiating efficiency and deal carefully with mine tailing.Inventor, by scientific experiment for many years and research, proposes a kind of beneficiation method of novelty and complete tailing treatment technology.
According to an aspect of the present invention, provide a kind of beneficiation method, the method comprises the steps: granular mineral aggregate and water to feed refiner, the ore pulp that mineral aggregate and water are mixed to form in the inside of the selected cylinder of refiner from entrance to exit movement, the wherein approximate horizontal layout of the central axis of selected cylinder; While ore pulp flowing, selected cylinder is driven to rotate around its center axis, ore pulp is made to move upward from cylinder bottom along the inwall of selected cylinder while advancing and fall due to the effect of gravity subsequently, continue to rotate described cylindrical shell, make ore pulp repeat above-mentioned rising and dropping process in selected cylinder, do not stop to stir and rolling in selected tube inner chamber; By the field generator for magnetic arranged along the circumference of selected cylinder, magnetic field is applied to ore pulp, make the selected mineral grain in ore pulp attach on the inwall of selected cylinder; By being arranged on the elongated bar-shaped sorter of selected tube inner chamber near selected cylinder barrel preset distance place, ore pulp is accurately sorted; By the magnetic field that circumferentially arranges at selected cylinder and described sorter, make selected mineral in ore pulp in the process risen and fall, be subject to the effect in magnetic field, repeatedly stirred and be combined with each other in whipping process, form magnetic group and/or magnetic linkage, after accumulating enough large magnetic group and/or magnetic linkage, to be attached on selected cylinder inwall along with the rotation of selected cylinder moves upward always, to arrive in selected tube inner chamber the feeding zone being positioned at top; Make selected mineral fall to the first splicing groove of refiner in feeding zone by blanking mechanism, and leave refiner via this splicing groove; Other material except selected mineral in ore pulp enters the tailing groove of refiner bottom selected tube inner chamber, enters tailing induction system.
Preferably, the upstream of the blanking mechanism in described feeding zone is also provided with the sorter paralleled with the central axis of described selected cylinder, after making to select the space that mineral aggregate is passed between the inwall of selected cylinder and described sorter, arrives feeding zone by blanking.
Preferably, the magnetic line of force in described magnetic field and ore pulp direction of advance roughly perpendicular.
Preferably, described sorter roughly parallels with the central axis of selected cylinder.
Preferably, described sorter is made up of permeability magnetic material.Further preferably, described sorter is the metal tube of hollow, and described metal tube also can be used for supplying water simultaneously.
Preferably, described sorter does not rotate along with selected cylinder, is fixed on the support outside selected cylinder.
Preferably, can in the bottom of the inner chamber of selected cylinder near barrel be provided with one or more sorters.
Utilize according to method of the present invention, from all kinds of ore abandoned in a large number or mine tailing, efficiently can sort out the mineral aggregate of economic worth.
Energy resource consumption of the present invention is low, and metal recovery rate is high, and metal recovery is of high grade, realizes the separate discharge of logistics and water simultaneously, fundamentally solves the problem of environmental pollution.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of present disclosure, the detailed description of the invention of the application is described with reference to the accompanying drawings.
Fig. 1 shows the schematic diagram of the beneficiation method according to an embodiment of the invention;
Fig. 2 shows the schematic end of the refiner used in the beneficiation method according to the embodiment in Fig. 1; And
Fig. 3 shows the schematic diagram of the beneficiation method according to an embodiment of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.Embodiment described is in this disclosure only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.Protection scope of the present invention is not by the restriction of hereafter described detailed description of the invention.
In disclosure hereafter, be understandable that, shown embodiment and example are only exemplary.Unless there is special explanation in this article, the definition that the term that the various and element mentioned in present disclosure, parts, equipment, technique are relevant and wording and those of ordinary skill in the art generally understand and implication are consistent.It should be noted that, the shape design of the various units shown in accompanying drawing, pipeline, element and assembly etc. and position are only schematic, should be appreciated that, each element shown in figure can take different forms and form according to field condition in practice, and this does not depart from spirit of the present invention and purport.
According to an aspect of present disclosure, propose a kind of beneficiation method of wet type, the method may be used for raw ore and sorts the screening again with mine tailing.
With reference to accompanying drawing, the following intelligent concentration step in present embodiment will be illustrated.
After by the mineral aggregate grinding after primary election, feed refiner 300, or after grinding and fineness sorting, mineral aggregate is fed refiner.
The ore pulp 10 that mineral aggregate and water are mixed to form in the inside of the selected cylinder of refiner from entrance to exit movement, the wherein approximate horizontal layout of the central axis of selected cylinder;
While ore pulp flowing, selected cylinder 310 is driven to rotate around its center axis, ore pulp is made to move upward from cylinder bottom along the inwall of selected cylinder while advancing and fall due to the effect of gravity subsequently, continue to rotate described cylindrical shell, make ore pulp repeat above-mentioned rising and dropping process in selected cylinder, do not stop to stir and rolling in selected tube inner chamber;
Apply magnetic field by the field generator for magnetic arranged along the circumference of selected cylinder to ore pulp, make the selected mineral grain in slurry attach on the inwall of selected cylinder, the magnetic line of force and the slurry direction of advance in wherein said magnetic field are roughly perpendicular;
Accurately sort by being arranged on selected tube inner chamber sorter 330 pairs of ore pulps near selected cylinder barrel preset distance place; This sorter 330 roughly parallels with the central axis of selected cylinder 310, in the rotation process of selected cylinder, at the rolling of selected tube inner chamber and the ore pulp stirred and select mineral aggregate and be passed in space between the inwall of selected cylinder and sorter; Preferably, in the bottom of the inner chamber of selected cylinder near barrel be provided with one or more sorters 330;
By the magnetic field that circumferentially arranges at selected cylinder and described sorter, make selected mineral (the first mineral in ore pulp, be iron ore in the present embodiment) in the process risen and fall, be subject to the effect in magnetic field, repeatedly stirred and be combined with each other in whipping process, form magnetic group and/or magnetic linkage, after accumulating enough large magnetic group and/or magnetic linkage, to be attached on selected cylinder inwall along with the rotation of selected cylinder moves upward always, to arrive in selected tube inner chamber the feeding zone being positioned at top;
Make the first mineral fall to the first splicing groove of refiner in feeding zone by blanking mechanism, and leave refiner via this splicing groove;
Other material except selected mineral in ore pulp enters the tailing groove of refiner bottom selected tube inner chamber, enters tailing induction system.
Preferably, as shown in Figures 2 and 3, the upstream of the blanking mechanism in described feeding zone is also provided with the sorter paralleled with the central axis of selected cylinder, after making to select the space that mineral aggregate is passed between the inwall of selected cylinder and described sorter, arrives feeding zone by blanking.This sorter roughly parallels with the central axis of selected cylinder.
Preferably, described sorter is made up of the permeability magnetic material of such as iron etc.Such as, described sorter can be the metal bar that such as iron etc. is made.Preferably, sorter can be the metal tube of hollow, and described metal tube also can be used for supplying water simultaneously.
In the embodiment shown in Fig. 2 and 3, sorter does not rotate along with selected cylinder, such as, can be fixed on the support outside selected cylinder.But be understandable that, sorter can be arranged in the process of ore dressing removable, such as, can rotate together along with selected cylinder.Sorter can arrange multiple as required, arranges and is spaced from certain distance, can be fixed on the support outside cylinder of selecting materials along selected cylinder inwall, or can be fixed on when rotating with cylinder of selecting materials and select materials on cylinder.
Ore pulp after selected is divided into two parts, the mineral aggregate be selected, and also namely the stacking of fine powder stock ground delivered to after dewatering by fine powder mineral aggregate.
Tailing enters dry tailings drainage device and dewaters, and then stacks to tailingspile.
In the preparation equipment shown in Fig. 1 and Fig. 2, magnetic generating means 220 is made up of some right permanent magnet magnetic sheets.Be understandable that, electromagnet also can be utilized to carry out alternative permanent magnet.
In the present embodiment, the approximate horizontal layout of the central axis of separation tube.
In other embodiments, the central axis of separation tube also can according to circumstances suitably tilt.Such as, if need than discharging speed faster or for the ease of discharging, the central axis of separation tube can be arranged so that discharge end is slightly lower than feed end.In some cases, such as, for the too fast mineral aggregate of flow velocity or the good mineral of mobility, also separation tube can be arranged to the mode of discharge end slightly higher than feed end.
Fig. 2 shows the preparation equipment 200 end face elevation view shown in Fig. 1, in the figure in order to clearly show that the structure of separation tube inside, eliminates the parts such as such as support, drive unit, feeding mechanism and discharging mechanism.
As shown more clearly in figure 2, field generator for magnetic 220 is arranged around the chamber 215 that sorts of separation tube 210 in a circumferential direction.Preferably, field generator for magnetic 220 comprises multiple paired magnetic sheet, and magnetic sheet is around the circumference of separation tube 210.Preferably, field generator for magnetic 220 is arranged in the circumferentially whole of separation tube, also can arranging section circumferentially.Frame 230 comprises the many groups running roller for supporting separation tube, can rotate to make separation tube.Blanking mechanism 270 is arranged in and sorts chamber 215 top, can make to be selected material and fall into the first material-receiving device 263 be connected with the first discharging opening 261 in running.
In the course of work of preparation equipment, the ore pulp that mineral aggregate to be selected and water are mixed to form feeds in separation tube 210, drive unit 240 drives separation tube 210 to rotate, under the magnetic fields that field generator for magnetic 220 produces, the mineral aggregate in chamber of sorting of separation tube 210 is being followed while barrel rotates, move upward from cavity bottom, and fall due to the effect of gravity subsequently, mineral aggregate stirs repeatedly in separation tube 210 inside, the first mineral be mixed in wherein are separated in whipping process, and attaches to inside barrel.The first mineral be attached on barrel move upward along with the rotation of separation tube always, arrive the feeding zone above separation tube inner chamber.Make to select mineral (the first mineral) in feeding zone by blanking mechanism 270 and fall to the first material-receiving device 263, then the first mineral aggregate leaves separation tube 210 via the first outlet 261.The mine tailing being positioned at the bottom sorting chamber falls into the second splicing groove via the second discharging opening of separation tube, leaves separation tube.
Hereafter will illustrate the workflow according to equipment of the present invention for Benefication of magnetite.Magnetic iron ore is metamorphosed sedimentary type magnetic iron ore mainly, and the iron in ore mineral overwhelming majority is magnetic iron ore, and based on fine-grained disseminated grain, gangue mineral is mainly the silicate mineral such as quartz or hornblend.More containing ferrosilite in some cases.
When carrying out ore dressing, can utilize, according to the equipment of present disclosure, primary election be carried out to ore.In primary election process:
First, fed in the sorting chamber 215 of separation tube 210 by the raw ore material to be screened of feeding machanism 250 by granular or powdery, make simultaneously raw ore material in the inside of separation tube from entrance to exit movement.Water is fed by the feed pipe 251 of feeding device 250.Under the effect in the magnetic field of the circle distribution along sorting chamber 215, the first material in raw ore material attaches on the inwall of separation tube.
Drive separation tube 210 to rotate, make mineral aggregate to move upward from bottom along the inwall of separation tube while advancing and fall due to the effect of gravity subsequently.Separation tube continues to rotate, mineral aggregate is made to repeat above-mentioned rising and dropping process in sorting chamber indoor, first mineral in the mineral aggregate be mixed in are separated in stirring and roll procedure, and be combined with each other under the influence of a magnetic field formation first mineral group or mineral chain in the process stirred.Preferably, the magnetic line of force in described magnetic field and the direction of advance of mineral aggregate roughly perpendicular.
Under the influence of a magnetic field, the rotation that the first mineral aggregate is attached to along with separation tube on sorting inwall moves upward always, arrives the feeding zone above sorting chamber 215.
Make the first mineral fall to the first material-receiving device 263 in feeding zone by blanking mechanism 270, and via the outlet of the first material-receiving device 263, the first mineral sorted out are delivered to outside separation tube.
The composition except described first mineral in raw ore material enters the second material-receiving device via the second discharging opening of sorting chamber lower portion, then leaves preparation equipment.
Preferably, at the first mineral aggregate after the screening of preparation equipment, again can enter after grinding in another preparation equipment and repeat above-mentioned process of selecting materials, carry out meticulous sorting.
In above-mentioned ore dressing process, raw ore material is all flow with the form of ore pulp and carry with selecting mineral.Pipeline can be utilized or transmit and bring the various material of conveying.
In the present embodiment, separation tube 210 is lateral arrangement, can be made up of stainless steel or other wear resistant plastic material.Separation tube also can not be able to hinder the high-abrasive material of the magnetic line of force to make by other.
According to the difference for the treatment of capacity, separation tube can manufacture different sizes.Such as, the diameter of separation tube can in the scope of 0.5 meter to 10 meters.The length of separation tube can in the scope of 3 to 15 meters.Be understandable that, according to the material type that will sort and rotating speed, the size of separation tube can be determined according to specific circumstances, as long as receive the effect in enough large magnetic field at the mineral aggregate sorted in chamber of separation tube, can be adsorbed on the inwall of separation tube.
As shown in Figure 1, the mineral aggregate of feeding machanism 250 feeds the left side that end is arranged in separation tube 210, and discharging mechanism 260 is arranged in another end of separation tube 210.Feed pipe 251 extends to left end from right-hand member, and also namely feed pipe 251 extends to feed end from the discharge end of separation tube, and preferably, the delivery port of feed pipe is at feed end.In other implementations, the part of feed pipe in sorting chamber indoor can have the opening of multiple spaced apart certain distance.
In the preparation equipment shown in Fig. 1, feed pipe 251 is made up of metal material, is arranged in the close separation tube barrel preset distance place sorted in chamber, while water supply, feed pipe can also utilize its impact for magnetic field in variation magnetic field, assists and accurately sorts ore pulp.Feed pipe 251 roughly parallels with the central axis of separation tube 210, in the rotation process of separation tube, is passed in space between the inwall of separation tube and sorter sorting in chamber rolling and the ore pulp stirred and select mineral aggregate; Preferably, in the bottom of the inner chamber of separation tube, barrel is provided with one or more feed pipe 251.Feed pipe does not rotate along with separation tube, can be fixed on the support outside separation tube.Preferably, for different mineral aggregates to be selected, feed pipe can adjust according to the character that will sort mineral sorting the position in chamber.
Feed pipe 251 can be many, is preferably 2-5 bar, preferably 2 further.
The vertical range of the distance bottom feed pipe distance separation tube and distance separation tube inwall is adjustable.For different mineral to be selected and grade requirement, the vertical range of bottom and separation tube inwall that feed pipe distance sorts chamber also can correspondingly adjust.
By the magnetic field that circumferentially arranges at separation tube and feed pipe, make selected mineral (the first mineral in ore pulp, be iron ore in the present embodiment) in the process risen and fall, be subject to the effect in magnetic field, repeatedly stirred and be combined with each other in whipping process, being formed magnetic group and/or magnetic linkage, after accumulating enough large magnetic group and/or magnetic linkage, the rotation be attached to along with separation tube on separation tube inwall moves upward always, arrives the feeding zone sorting in chamber and be positioned at top.
According in other embodiments of present disclosure, independent sorter can be arranged realize sorting for mineral.When arranging separately sorter, feed pipe can be arranged to other suitable form as required and be arranged on other positions.Such as, feed pipe can be set to ore pulp entrance in the same side, as left side in FIG.When arranging independent sorter, feed pipe can be made up of the non-magnet materials such as plastics or flexible material.
Wherein in described refiner: refiner is applied with toroidal magnetic field to mineral aggregate, make mineral aggregate stir in the cylinder of refiner and roll simultaneously, the mineral aggregate containing magnetic mineral in mineral aggregate is utilized to form magnetic linkage and magnetic group, and the rotation along with the cylinder of refiner arrives above cylinder, thus the mineral aggregate of magnetic is captured, crawled mineral aggregate enters in the first splicing groove above cylinder, and the not crawled magnetic material of not tool goes out from the port of export of refiner via tailing concentrated flow.
[beneficial effect]
By utilizing according to beneficiation method of the present invention, at least following beneficial effect can be realized:
In the actual tests of applicant, " the non magnetic iron " in raw material can be elected.
Sedimentary metamorphic ultra-poor iron ore Tfe (full iron) can be made 5.6%; Mfe (Armco magnetic iron) selects the Iron concentrate up to 66% 0.8% time; In CHARACTERISTICS OF TAILINGS SAND, Tfe grade only remains 1.1%; And ratio of concentration is less than 20:1.
" world-famous puzzle " ultra-poor vanadium titano-magnetite CHARACTERISTICS OF TAILINGS SAND can be sorted.Make ultra-poor vanadium titano-magnetite spoil reclaming Iron concentrate reach more than Tfe65%, ratio of concentration is less than 25:1.
The metallic iron in pyrite cinder can be sorted; Can up to Tfe85%, far away higher than the maximum data 63.3% of the state-of-the-art mineral processing technology of current China.
Iron concentrate can being made to purify again further, the Iron concentrate of about 65%, by using according to beneficiation method of the present invention, can 71.5% be reached.Almost close to tri-iron tetroxide theoretical value 72.4%.
Hereinafter the beneficial effect that beneficiation method according to the present invention produces and the great economic benefit brought will be enumerated some examples to illustrate.
Example 1
The CHARACTERISTICS OF TAILINGS SAND of the ultra-poor vanadium titano-magnetite by the Ultrabasic Rock-Body from somewhere, Hebei province is utilized and has carried out mine tailing screening according to method of the present invention.
Examining report according to the department of detection: the mineral content following (adding up to 100%) of above-mentioned ore deposit CHARACTERISTICS OF TAILINGS SAND: in CHARACTERISTICS OF TAILINGS SAND, Pyroxene Minerals accounts for 47.59%, amphibole mineral account for 18.53%, spectra accounts for 14.51%, ilmenite mineral account for 5.87%, montmorillonite mineral accounts for 5.19%, chlorite mineral accounts for 1.75%, and illite minerals accounts for 6.55%.Can see, the Within Monominerals not containing magnetic iron ore in CHARACTERISTICS OF TAILINGS SAND.
In the tailing treatment technology of prior art, almost have no idea to select the Iron concentrate meeting industrial index requirement from above-mentioned ultra-poor vanadium titano-magnetite CHARACTERISTICS OF TAILINGS SAND.Because based on common mineralogy, crystal chemistry theory and ore dressing experience of the prior art, although pyroxene, amphibole iron content, they are " lattice iron ", are the iron in silicate, may by physical upgrading method.The certain iron content of ilmenite, but in feTiO3, iron Fe only accounts for 36.8%, and titanium Ti accounts for 36.6%, and all the other are oxygen 26.6%.Only having the ilmenite of 5.87% in CHARACTERISTICS OF TAILINGS SAND, want to select the Iron concentrate reaching industrial requirements, is almost impossible in theory.
But by utilizing according to beneficiation method of the present invention, the survey report of authoritative institution shows: in the primary beneficiation test utilizing above-mentioned beneficiation method of the present invention, reaches 57.55% for selected rear the obtained Iron concentrate Tfe of above-mentioned mine tailing.
In second time test, the Iron concentrate Tfe65.78% selected.
Example 2
Sample 32 tons at the mine tailing of certain mining site, carry out beneficiation test.
Utilize according to beneficiation method of the present invention, (CHARACTERISTICS OF TAILINGS SAND of mineral deposit of the same race industrial type) beneficiation test result is:
Tfe content 8.52%; Select fine powder grade 65.67%; Mine tailing Tfe grade 3.61%; Ore dressing metal recovery rate tail 60.98%, productive rate is 7.9%.
In contrast: use same CHARACTERISTICS OF TAILINGS SAND, the best index that ore-dressing technique of the prior art obtains is:
CHARACTERISTICS OF TAILINGS SAND Tfe grade is 7.91%; Fine powder grade is also 65.76%, but ore dressing metal recovery rate is 21.23%, and productive rate is 2.46%.
Can see, the ore dressing metal recovery rate that beneficiation method according to the present invention obtains exceeds 39.75% than best index 21.23%, and the productivity ratio whole nation at present best index 2.46% exceeds 5.44%.This just means that in same a kind of mine tailing CHARACTERISTICS OF TAILINGS SAND, Tfe content is substantially identical, the Iron concentrate grade selected is all 65.67%, but, often process 100 tons of CHARACTERISTICS OF TAILINGS SAND, technique of preparing of the present invention is than energy more than enough production Iron concentrate 5.44 tons, many enforcement sale incomes, can many Footwall drift 39.75% than prior art up to more than 5,000 yuan.
As can be seen here, technique of preparing according to the present invention has extraordinary technique effect.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (7)
1. a wet type beneficiation method, the method comprises the steps:
Granular mineral aggregate and water are fed refiner, the ore pulp that mineral aggregate and water are mixed to form in the inside of the selected cylinder of refiner from entrance to exit movement, the wherein approximate horizontal layout of the central axis of selected cylinder;
While ore pulp flowing, selected cylinder is driven to rotate around its center axis, ore pulp is made to move upward from cylinder bottom along the inwall of selected cylinder while advancing and fall due to the effect of gravity subsequently, continue to rotate described cylindrical shell, make ore pulp repeat above-mentioned rising and dropping process in selected cylinder, do not stop to stir and rolling in selected tube inner chamber;
By the field generator for magnetic arranged along the circumference of selected cylinder, magnetic field is applied to ore pulp, make the selected mineral grain in ore pulp attach on the inwall of selected cylinder;
By being arranged on the elongated bar-shaped sorter of selected tube inner chamber near selected cylinder barrel preset distance place, ore pulp is accurately sorted; In the bottom of the inner chamber of selected cylinder, barrel is provided with one or more sorter;
By the magnetic field that circumferentially arranges at selected cylinder and described sorter, make selected mineral in ore pulp in the process risen and fall, be subject to the effect in magnetic field, repeatedly stirred and be combined with each other in whipping process, form magnetic group and/or magnetic linkage, after accumulating enough large magnetic group and/or magnetic linkage, to be attached on selected cylinder inwall along with the rotation of selected cylinder moves upward always, to arrive in selected tube inner chamber the feeding zone being positioned at top;
Make selected mineral fall to the first splicing groove of refiner in feeding zone by blanking mechanism, and leave refiner via this splicing groove;
Other material except selected mineral in ore pulp enters the tailing groove of refiner bottom selected tube inner chamber, enters tailing induction system.
2. beneficiation method according to claim 1, it is characterized in that, the upstream of the blanking mechanism in described feeding zone is also provided with the sorter paralleled with the central axis of described selected cylinder, after making to select the space that mineral aggregate is passed between the inwall of selected cylinder and described sorter, arrive feeding zone by blanking.
3. beneficiation method according to claim 2, is characterized in that, the magnetic line of force and the ore pulp direction of advance in wherein said magnetic field are roughly perpendicular.
4. beneficiation method according to claim 2, is characterized in that, described sorter roughly parallels with the central axis of selected cylinder.
5. beneficiation method according to claim 4, is characterized in that, described sorter is made up of permeability magnetic material.
6. beneficiation method according to claim 5, is characterized in that, described sorter is the metal tube of hollow, and described metal tube is simultaneously also for supplying water.
7. beneficiation method according to claim 6, is characterized in that, described sorter does not rotate along with selected cylinder, is fixed on the support outside selected cylinder.
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| CN109331995B (en) * | 2018-11-06 | 2024-01-30 | 中南大学 | Downstream collection type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical-ring high-gradient magnetic separator and magnetic ore separation method |
| CN110180478B (en) * | 2019-06-24 | 2021-08-20 | 立中四通轻合金集团股份有限公司 | Hot reduction material mixing system with rotary iron removal device |
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| CN2915265Y (en) * | 2006-04-30 | 2007-06-27 | 许新成 | Drum-type magnetic separator |
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