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CN104225969A - Method and device for concentrating molybdenum ore flotation tailing ore pulp - Google Patents

Method and device for concentrating molybdenum ore flotation tailing ore pulp Download PDF

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Publication number
CN104225969A
CN104225969A CN201410486288.8A CN201410486288A CN104225969A CN 104225969 A CN104225969 A CN 104225969A CN 201410486288 A CN201410486288 A CN 201410486288A CN 104225969 A CN104225969 A CN 104225969A
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China
Prior art keywords
lamella thickener
ore
lamella
pulp
overflow
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CN201410486288.8A
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Chinese (zh)
Inventor
许锦康
韩晓熠
郭强
冉银华
李强
敖江
杨茂椿
缪罡和
陈家栋
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YUNNAN KEENLY NEW MATERIAL CO Ltd
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YUNNAN KEENLY NEW MATERIAL CO Ltd
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Priority to CN201410486288.8A priority Critical patent/CN104225969A/en
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Abstract

The invention discloses a method and device for concentrating molybdenum ore flotation tailing ore pulp, and aims to provide the method and the device for concentrating the molybdenum ore flotation tailing ore pulp, which can concentrate ore pulp to more than 40 percent and can directly use overflow liquid as reuse water for flotation. The method comprises the following steps: (1) first settlement; (2) overflow pulp dilution of first settlement; (3) medicament addition; (4) second settlement; (5) mixing preparation of ore pulp to be transported. The device comprises a first-stage lamella thickener, a second-stage lamella thickener unit, a potassium permanganate feeder, a flocculant feeder and a water pump, wherein the second-stage lamella thickener unit is composed of a plurality of lamella thickeners which are sequentially arranged in a ladder shape, an overflow groove of the high lamella thickener is abutted against an ore feeding chute of the low lamella thickener in the adjacent lamella thickeners, and a movable baffle plate is arranged at the outlet end of the overflow groove. The method and the device are suitable for concentration and clarification of the molybdenum ore flotation tailing ore pulp and other ore pulp with similar properties.

Description

A kind of method for concentration of molybdenum ore flotation tailing pulp and enrichment facility thereof
Technical field
The present invention relates to molybdenum ore flotation technology field, especially relate to a kind of method for concentration of molybdenum ore flotation tailing pulp.
Background technology
Molybdenum ore head grade is very low, usually only has about 0.1%, therefore selects the productive rate of molybdic tailing no better than raw ore amount, and molybdenum concntrate productive rate is extremely low, and mine needs scale effect to bring benefits, therefore molybdenum ore selects the mine tailing amount of factory very large.
Molybdenum ore the most often adopts flotation, and the pulp density that flotation operation requires is higher, usually reaches more than 30%, therefore Tailings Slurry concentration after molybdenum ore flotation is also corresponding higher, and usual about 25%.Part gangue mineral in molybdenum ore, as the hardness such as talcum, chlorite is very low, very easily cross in fine grinding and pulverize the fine suspended particles of generation, pulp density high viscosity is large in addition, makes it be difficult to be removed by natural subsidence.
If molybdenum ore flotation tailing adopts and adds coagulant (inorganic many titles flocculating agent organically claims flocculant) more and help and sink that there are the following problems: 1, too high, the fineness of pulp density too carefully causes raw ore slurry direct dosing effect very bad.Especially flocculant, just can must play one's part to the full in low concentration ore pulp, and facts have proved the ore pulp that ore fineness is thinner, and because its viscosity is higher, the pulp density that flocculating setting requires is lower.Coagulation and sedimentation testing shows, molybdenum ore flotation tailing pulp needs the concentration being diluted to less than 6% just can obtain the low coagulant precipitation effect satisfied again of medicine consumption.But Tailings Slurry below the concentration dilution to 6% of 25%, its ore pulp amount increases too many, also just make the treating capacity of equipment increase too many, not easily realize.2, as previously mentioned, select all very large extremely difficult sedimentation again of the mine tailing amount of molybdenum, if adopt circle pond concentrator, any one mine is all difficult to provide enough large-area place to put.3, molybdenum ore head grade is too low, if sort with there being relatively many remaining flocculating agent molecules to make ore particle produce fine floc sedimentation in water, floating agent can be made to be affected with contacting of object ore particle, flocculant usage shows the test that floatation indicators affects, the flocculant usage selecting molybdic tailing to starch is no more than 10g/t, otherwise the rate of recovery can decline to some extent, factory's economic benefit is selected in impact.And if common molybdenum ore flotation tailing pulp adopts coagulation to concentrate, the consumption of its flocculating agent reaches about 100g/t usually, and flocculant usage reaches more than 20g/t usually, causes adverse effect to mineral processing index.
Based on above 3 reasons, select the flotation molybdic tailing of factory to starch at present and mostly directly enter Tailings Dam, and Tailings Dam distance selects factory usually to have several kilometers to dozens of kilometres, the conveying energy consumption that molybdic tailing is starched is very high, about 1/3rd of Zhan Xuan factory total energy consumption.
How molybdenum ore flotation tailing pulp is concentrated into more than 40% and carries out Rich thickness transportation, and realize limpid not affecting backwater before the factory of flotation sorting index, be very difficulty in current technical field.
Summary of the invention
Instant invention overcomes shortcoming of the prior art, provide a kind of using slurry concentrating to more than 40% and overflowing liquid can directly as method for concentration and the enrichment facility thereof of the molybdenum ore flotation tailing pulp of flotation operation recycle-water, ore pulp after the present invention concentrates effectively can reduce conveying cost and effectively ensure that in overflowing liquid, remaining coagulant does not exceed standard, reach and be lowered into product cost, the object of increasing economic efficiency.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The technical scheme that method for concentration adopts: a kind of method for concentration of molybdenum ore flotation tailing pulp, comprises the following steps:
(1) first sedimentation: molybdenum tailing slurry carries out natural subsidence through first order lamella thickener;
(2) the overflow slurry dilution of first sedimentation: the overflowing liquid that first sedimentation obtains is added clear water and is diluted to 6%(weight ratio) below;
(3) medicament is added: first add potassium permanganate in overflow slurry after dilution, consumption is 30 ~ 40g/t; Add polyacrylamide flocculant again, consumption is 5 ~ 6g/t;
(4) sedimentation again: the coagulation ore pulp obtained through step (3) being dropped into the second lamella thickener group sedimentation obtains overflowing liquid is again the clear water meeting reuse, and is recycled by the dilution clear water of its part as step (2);
(5) ore pulp mixed preparing to be conveyed: the underflow obtain first sedimentation and the underflow that sedimentation obtains again are mixed to get thickening mineral slurries to be conveyed.
Preferably, after described step (1) natural subsidence, underflow density reaches 55%(weight ratio) more than, overflow slurry concentration is 10%(weight ratio).
Preferably, the concentration in described step (2) after the dilution of overflow slurry is 6%(weight ratio).
Preferably, the underflow density obtained through described step (4) is not less than 22%(weight ratio).
Preferably, the concentration through the mixed ore pulp to be conveyed of step (5) is not less than 40%(weight ratio).
Preferably, in described step (3), potassium permanganate consumption is 40g/t, and polyacrylamide flocculant usage is 6g/t.
The technical scheme that enrichment facility adopts: a kind of enrichment facility of molybdenum ore flotation tailing pulp, comprises first order lamella thickener, second level lamella thickener group, potassium permanganate balling iron, flocculant balling iron, water pump, overflowing liquid collector groove and underflow ore pulp chute;
Described second level lamella thickener group is made up of the lamella thickener of multiple arranged in step shape successively, between adjacent lamella thickener, the overflow launder of the higher person docks with the ore deposit chute of giving of junior, and the port of export of overflow launder is provided with sideboard, what part clean water overflow can be made to enter junior dilutes ore pulp in the chute of ore deposit;
In the lamella thickener group of the described second level, the overflow launder of the lamella thickener that position is minimum is connected with overflowing liquid collector groove;
The underflow outlet of described first order lamella thickener and each underflow of second level lamella thickener group export and all butt up against underflow ore pulp chute and realize underflow and mix;
The overflow slurry outlet of described first order lamella thickener is connected with each ore deposit chute of giving of second level lamella thickener group, the overflow of first order lamella thickener slurry is averagely allocated to each lamella thickener of second level lamella thickener group;
Described potassium permanganate balling iron and flocculant balling iron are arranged at each on the chute of ore deposit of lamella thickener group;
The entrance of described water pump is connected with overflowing liquid collector groove, export by pipeline arrive the lamella thickener that in second level lamella thickener group, position is the highest in the chute of ore deposit.
Preferably, described second level lamella thickener group is made up of 3 ~ 5 lamella thickeners.
Compared with prior art, tool of the present invention has the following advantages:
(1) to efficiently solve molybdenum ore flotation tailing pulp amount very large in the present invention, mine is difficult to provide enough large-area place to put a difficult problem for concentrator, efficiently solve select molybdic tailing to starch concentrated dosage of PAC must be able to not obtain again more than 10g/t can the difficult problem of reuse clear water; Present invention achieves the effectively concentrated of molybdenum ore flotation tailing pulp, achieving part overflowing liquid through improvement can directly use as dilution clear water, effectively reduces the energy consumption that clear water is diluted in conveying.
(2) ore pulp after the present invention concentrates can effectively reduce conveying cost, and overflowing liquid not containing the medicament affecting ore dressing, can ensure that the inflow of enrichment facility and water yield balance all the time substantially, improves water use efficiency.Reach reduction production cost, the object of increasing economic efficiency.
(3) enrichment facility floor space of the present invention is little, and its floor space is only 1/15 of lamella thickener settling area, effectively realizes the sedimentation concentration on the spot of molybdenum ore flotation tailing pulp.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process chart of method for concentration.
Fig. 2 is the schematic diagram of an embodiment of enrichment facility.
Fig. 3 is the schematic diagram of lamella thickener group in the second level in enrichment facility.
Fig. 4 is the top view of Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The method for concentration of the flotation tailing pulp of molybdenum ore shown in Fig. 1, comprises the following steps:
(1) first sedimentation: molybdenum tailing slurry carries out natural subsidence through first order lamella thickener;
(2) the overflow slurry dilution of first sedimentation: the overflowing liquid that first sedimentation obtains is added clear water and is diluted to 6%(weight ratio) below;
(3) medicament is added: first add potassium permanganate in overflow slurry after dilution, consumption is 30 ~ 40g/t; Add polyacrylamide flocculant again, consumption is 5 ~ 6g/t;
(4) sedimentation again: the coagulation ore pulp obtained through step (3) being dropped into the second lamella thickener group sedimentation obtains overflowing liquid is again the clear water meeting reuse, and is recycled by the dilution clear water of its part as step (2);
(5) ore pulp mixed preparing to be conveyed: the underflow obtain first sedimentation and the underflow that sedimentation obtains again are mixed to get thickening mineral slurries to be conveyed.
Wherein, after described step (1) natural subsidence, underflow density reaches 55%(weight ratio) more than, overflow slurry concentration is about 10% (weight ratio).Concentration in described step (2) after the dilution of overflow slurry is preferably 6%(weight ratio).The underflow density obtained through described step (4) is not less than 22%(weight ratio).Concentration through the mixed ore pulp to be conveyed of step (5) is not less than 40%(weight ratio).In described step (3), preferred scheme is, potassium permanganate consumption is 40g/t, and polyacrylamide flocculant usage is 6g/t.
The enrichment facility of the flotation tailing pulp of molybdenum ore shown in Fig. 2-4, comprises first order lamella thickener 5, second level lamella thickener group, potassium permanganate balling iron 6, flocculant balling iron 10, water pump 9 overflowing liquid collector groove 3 and underflow ore pulp chute 13;
Described second level lamella thickener group is made up of the lamella thickener 1,2,4 of three arranged in step shapes successively, between adjacent lamella thickener 1,2,4, the overflow launder 8 of the higher person docks with the ore deposit chute 7 of giving of junior, and overflow launder 8 is provided with sideboard 12, what part clean water overflow can be made to enter junior dilutes ore pulp in ore deposit chute 7;
In the lamella thickener group of the described second level, the overflow launder 8 of the lamella thickener 4 that position is minimum is connected with overflowing liquid collector groove 3;
The underflow outlet of described first order lamella thickener 5 and each underflow of second level lamella thickener group export and all butt up against underflow ore pulp chute 13 and realize underflow and mix;
The overflow slurry outlet 14 of described first order lamella thickener 5 is connected with each ore deposit chute 8 of giving of second level lamella thickener group, the overflow of first order lamella thickener 5 slurry is averagely allocated to each lamella thickener 1,2,4 of second level lamella thickener group;
Described potassium permanganate balling iron 6 and flocculant balling iron 10 are arranged at each on ore deposit chute 7 of lamella thickener group, for the dispensing of each lamella thickener 1,2,4;
The entrance of described water pump 9 is connected with overflowing liquid collector groove 3, export by pipeline arrive the lamella thickener 1 that in second level lamella thickener group, position is the highest in ore deposit chute 7.
In the lamella thickener group of the obvious second level, the quantity of lamella thickener can carry out Reasonable adjustment, and according to conventional production requirement, second level lamella thickener group is preferably made up of 3 ~ 5 lamella thickeners.
During production, described first order lamella thickener is containing overflow slurry mean allocation the giving in the chute of ore deposit to the second level each hopper of lamella thickener group of mud, and carry out dense (at this moment the addition of flocculant is more) after adding potassium permanganate and flocculant mixing, by the time described each lamella thickener of second level lamella thickener all fills ore pulp when starting clean water overflow, the lamella thickener that takes second place of clarification overflow gravity flow in-position of the lamella thickener that position is higher give in the chute of ore deposit, the clean water overflow of the lamella thickener that position is minimum is collected in the overflowing liquid collector groove of hopper outer wall, by water pump be delivered to each lamella thickener in the lamella thickener group of the second level in the chute of ore deposit.The system of such formation overflow self-loopa dilution feed ore concentration, by the time to slurry dilution to optium concentration time, flocculant usage is adjusted to minimum of a value, and unnecessary overflow clear water is drained to become selects factory's reuse clear water.The flexible control adding the overflow water yield can be realized by the design of second level lamella thickener group each lamella thickener shape and function.Second lamella thickener group of this particular design can realize to any dilution of pulp density the most energy-conservationly, does not need extra to add clear water, and the conveying capacity of immersible pump is little, lift is low.
Test example
Certain molybdenum ore flotation tailing pulp, concentration is 22 ~ 29%, and fineness is that 200 object suspensions account for 85%(weight ratio).Contain the talcum of very easily argillization in this mine tailing, cause the thin mud of the part in ore pulp close to colloidal state, extremely difficult sedimentation.The flocculant adding all kinds and various consumption under the concentration of protocercal tail ore pulp does not all have effect, only have and Tailings Slurry concentration dilution just can be seen flocculation phenomenon to less than 16%, but flocculant usage is very large, reach 160g/t, and the flocculant usage that user requires more than 10g/t, otherwise can not affect floatation indicators.After adopting technology of the present invention, the concentration that overflow is starched is down to 10% by first order lamella thickener, if now directly add flocculant, its consumption is still higher, reaches 48g/t, still can not meet user's requirement.When overflow slurry (concentration 10%) of first order lamella thickener is diluted to the concentration of about 6% in the lamella thickener group of the second level, add potassium permanganate 30 ~ 40g/t and polyacrylamide 5 ~ 6g/t, the change of flocculating setting effect generation matter, floc sedimentation is large, sinking speed is very fast, and overflow water is limpid.With this overflow water and new water at the scene 2 flotation series carried out the contrast test of 3 months, do not find that floatation indicators is variant.The comprehensive underflow density of first order lamella thickener and second level lamella thickener group is steady in a long-term 40 ~ 43%, achieves the target of ore pulp Rich thickness transportation.
This factory selects molybdic tailing amount to be 1220t/h, the settling area of first order lamella thickener is 8000 square meters, the settling area of second level lamella thickener group is 40000 square meters, and first order lamella thickener frame is on the lamella thickener group of the second level, realizes pulp gravity flow and in turn saves place.All swash plate concentrators just can be put in the place selecting factory to provide only 3500 square meters, will originally think that the project that can not realize came true.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a method for concentration for molybdenum ore flotation tailing pulp, is characterized in that comprising the following steps:
(1) first sedimentation: molybdenum tailing slurry carries out natural subsidence through first order lamella thickener;
(2) the overflow slurry dilution of first sedimentation: the overflowing liquid that first sedimentation obtains is added clear water and is diluted to 6%(weight ratio) below;
(3) medicament is added: first add potassium permanganate in overflow slurry after dilution, consumption is 30 ~ 40g/t; Add polyacrylamide flocculant again, consumption is 5 ~ 6g/t;
(4) sedimentation again: the coagulation ore pulp obtained through step (3) being dropped into the second lamella thickener group sedimentation obtains overflowing liquid is again the clear water meeting reuse, and is recycled by the dilution clear water of its part as step (2);
(5) ore pulp mixed preparing to be conveyed: the underflow obtain first sedimentation and the underflow that sedimentation obtains again are mixed to get thickening mineral slurries to be conveyed.
2. the method for concentration of molybdenum ore flotation tailing pulp according to claim 1, is characterized in that: after described step (1) natural subsidence, underflow density reaches 55%(weight ratio) more than, overflow slurry concentration is 10%(weight ratio).
3. the method for concentration of molybdenum ore flotation tailing pulp according to claim 1, is characterized in that: the concentration in described step (2) after the dilution of overflow slurry is 6%(weight ratio).
4. the method for concentration of molybdenum ore flotation tailing pulp according to claim 1, is characterized in that: the underflow density obtained through described step (4) is not less than 22%(weight ratio).
5. the method for concentration of molybdenum ore flotation tailing pulp according to claim 1, is characterized in that: the concentration through the mixed ore pulp to be conveyed of step (5) is not less than 40%(weight ratio).
6. the method for concentration of molybdenum ore flotation tailing pulp according to claim 1, it is characterized in that: in described step (3), potassium permanganate consumption is 40g/t, and polyacrylamide flocculant usage is 6g/t.
7. an enrichment facility for molybdenum ore flotation tailing pulp, is characterized in that: comprise first order lamella thickener, second level lamella thickener group, potassium permanganate balling iron, flocculant balling iron, water pump, overflowing liquid collector groove and underflow ore pulp chute;
Described second level lamella thickener group is made up of the lamella thickener of multiple arranged in step shape successively, between adjacent lamella thickener, the overflow launder of the higher person docks with the ore deposit chute of giving of junior, and the port of export of overflow launder is provided with sideboard, what part clean water overflow can be made to enter junior dilutes ore pulp in the chute of ore deposit;
In the lamella thickener group of the described second level, the overflow launder of the lamella thickener that position is minimum is connected with overflowing liquid collector groove;
The underflow outlet of described first order lamella thickener and each underflow of second level lamella thickener group export and all butt up against underflow ore pulp chute and realize underflow and mix;
The overflow slurry outlet of described first order lamella thickener is connected with each ore deposit chute of giving of second level lamella thickener group, the overflow of first order lamella thickener slurry is averagely allocated to each lamella thickener of second level lamella thickener group;
Described potassium permanganate balling iron and flocculant balling iron are arranged at each on the chute of ore deposit of lamella thickener group;
The entrance of described water pump is connected with overflowing liquid collector groove, export by pipeline arrive the lamella thickener that in second level lamella thickener group, position is the highest in the chute of ore deposit.
8. the enrichment facility of molybdenum ore flotation tailing pulp according to claim 7, is characterized in that: described second level lamella thickener group is made up of 3 ~ 5 lamella thickeners.
CN201410486288.8A 2014-09-22 2014-09-22 Method and device for concentrating molybdenum ore flotation tailing ore pulp Pending CN104225969A (en)

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CN106390537A (en) * 2016-10-25 2017-02-15 洛阳栾川钼业集团股份有限公司 Method for recovering fine-particle-grade scheelite in two-stage thickening manner
CN114178047A (en) * 2021-12-06 2022-03-15 紫金矿业集团股份有限公司 Flocculation flotation method for comprehensively recovering micro-fine-particle molybdenum from iron tailings
CN114392588A (en) * 2021-12-17 2022-04-26 金堆城钼业汝阳有限责任公司 Method for improving concentration of concentrated tailings by using inclined plate thickener
CN115779506A (en) * 2022-12-16 2023-03-14 湖南有色金属职业技术学院 Multistage sediment device of non ferrous metal ore pulp
CN118527247A (en) * 2024-07-24 2024-08-23 鞍山市泰德机械设备有限公司 Mineral separation system based on unpowered concentration device and mineral separation method thereof
CN118527247B (en) * 2024-07-24 2024-11-15 鞍山市泰德机械设备有限公司 Mineral separation system based on unpowered concentration device and mineral separation method thereof

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CN115779506B (en) * 2022-12-16 2024-05-17 湖南有色金属职业技术学院 Multistage sedimentation device of nonferrous metal ore pulp
CN118527247A (en) * 2024-07-24 2024-08-23 鞍山市泰德机械设备有限公司 Mineral separation system based on unpowered concentration device and mineral separation method thereof
CN118527247B (en) * 2024-07-24 2024-11-15 鞍山市泰德机械设备有限公司 Mineral separation system based on unpowered concentration device and mineral separation method thereof

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Application publication date: 20141224