CN109894254A - A method of it is dehydrated for middle fine tailings - Google Patents
A method of it is dehydrated for middle fine tailings Download PDFInfo
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- CN109894254A CN109894254A CN201711310803.7A CN201711310803A CN109894254A CN 109894254 A CN109894254 A CN 109894254A CN 201711310803 A CN201711310803 A CN 201711310803A CN 109894254 A CN109894254 A CN 109894254A
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- dehydration
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- fine screen
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Abstract
The present invention provides a kind of method for the dehydration of middle fine tailings.The method comprise the steps that the tailing that granularity is 3-0.2mm is carried out primary dewatering using spiral classifier, the sand return product of spiral classifier carries out second dehydration by high frequency fine screen, the overflow product of spiral classifier and the undersized product of high frequency fine screen are discharged as ore pulp, and product is dewatered tailing on the sieve of high frequency fine screen.The present invention takes full advantage of simple, stable, the easy to operate feature of spiral classifier structure；The advantage that high frequency fine screen screening percentage is high, occupied area is small is taken full advantage of, aqueous particulate tailing combined dehydration new process is formed.Simultaneously according to spiral classifier working principle, its overflow weir is transformed, designs, be transformed into the overflow mechanism with U-typed mouth, sufficiently reduces grader sand return moisture.The dewatering process puts into production after practice, and original debris pulp density is 20% the aqueous solid material for being 13% can be obtained after combined dehydration.
Description
Technical field:
The present invention relates to a kind of methods for the dehydration of middle fine tailings, belong to tailings dewatering technical field.
Background technique:
Hydraulic classiciation, thickening equipment are more, and various hydraulic classification equipments are all to utilize ore particle sinking speed in an aqueous medium
Difference, classification process is completed in the gravitational field or centrifugal field.Spiral classifier belongs to mechanical classifier, and classification process is to supply
The sinking speed difference of particle in an aqueous medium carries out.Sand setting is continuously discharged using the spiral of rotation, there is simple structure, operation
Conveniently, the advantages that tilt angle of log washer is big, convenient for making gravity flow connection with ore mill, therefore generally using spiral point in production
Grade machine.
Screw classifying famine can be divided into single-screw and divide line machine and duplex-spiral classifier according to the difference of spiral number.According to point
The height of grade machine overflow weir, and high-weir type, low weir formula, three kinds of sinking can be divided into.High frequency fine screen is distributed by vibration excitor, ore pulp
Device, screen frame, rack, pendulum spring and screen part composition.High frequency fine screen is high-efficient, amplitude is small.It is mainly characterized by high frequency time, low
Amplitude, screening percentage are high, layer vibrating screen, single layer aperture increases, anti-blocking wearing-resistant；For multichannel to mine, compass screen surface utilization rate is high, and equipment handles energy
Power is big；Screen frame is flexibly supported, shock insulation absorbs sound, and noise is small；It is low in energy consumption, grading effect is good.Working principle is different from common dusting cover, by
In using high-frequency, the high speed oscillation of the tension and fine on ore pulp surface on compass screen surface is on the one hand destroyed, is accelerated
The effect of isolating of big density, big specific gravity valuable mineral, increases the probability contacted less than partition size material with sieve pore.And it is current
For middle fine tailings (3-0.2mm), use single spiral classifier or high frequency fine screen equal for 20% pulp dewatering to concentration
It cannot obtain 13% and left haul material.Sand return moisture is 19% or so after single spiral classifier dehydration.According to single
High frequency fine screen processing, since feedstock concentrations are low, need more high-frequency screens, takes up a large area, on-the-sieve material moisture is also high.
Summary of the invention
The purpose of the present invention is providing a kind of method for the dehydration of middle fine tailings in view of the above problems, sufficiently
Simple, stable, the easy to operate feature of spiral classifier structure is utilized；Take full advantage of high frequency fine screen screening percentage it is high,
The small advantage of occupied area forms aqueous particulate tailing combined dehydration new process.It is right simultaneously according to spiral classifier working principle
Its overflow weir is transformed, and is designed, is transformed into the overflow mechanism with U-typed mouth, and grader sand return moisture is sufficiently reduced.This is de-
Hydraulic art puts into production after practice, and original debris pulp density is 20% the aqueous solid for being 13% can be obtained after combined dehydration
Material.
Above-mentioned purpose is achieved through the following technical solutions:
A method of it is dehydrated for middle fine tailings, this method are as follows: the tailing that granularity is 3-0.2mm is used into screw classifying
Machine carries out primary dewatering, and the sand return product of spiral classifier carries out second dehydration, the overflow of spiral classifier by high frequency fine screen
The undersized product of product and high frequency fine screen is discharged as ore pulp, and product is dewatered tailing on the sieve of high frequency fine screen.
The method for the dehydration of middle fine tailings, the sieve aperture of the high frequency fine screen are 0.2-0.5mm.
The method for the dehydration of middle fine tailings, the overflow weir of the spiral classifier are with U-typed mouth
Overflow mechanism.
The utility model has the advantages that
The technology of the present invention takes full advantage of simple, stable, the easy to operate feature of spiral classifier structure；It takes full advantage of
The advantage that high frequency fine screen screening percentage is high, occupied area is small forms combined dehydration new process.It is worked simultaneously according to spiral classifier former
Reason, is transformed its overflow weir, designs, is transformed into the overflow mechanism with U-typed mouth, sufficiently reduces grader sand return water
Point.
The dewatering process puts into production after practice, raw ore slurry concentration be 20% can be obtained after combined dehydration aqueous be
13% solid tailing.After combined dehydration technique, moisture averagely declines 6 percentage points, and effect is obvious.
The dewatering process puts into production life, obvious to environmental-protection function, moves defeated vehicle and sheds moisture and significantly reduces, tailing region
Leak is reduced, and has prevented environmental issue conscientiously.
Detailed description of the invention
Attached drawing 1 is flow chart of the invention.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated, it should be understood that following specific embodiments are only used for
It is bright the present invention rather than limit the scope of the invention.
A method of it is dehydrated for middle fine tailings, this method are as follows: the tailing that granularity is 3-0.2mm is used into spiral
Grader carries out primary dewatering, and the sand return product of spiral classifier carries out second dehydration by high frequency fine screen, spiral classifier
The undersized product of overflow product and high frequency fine screen is discharged as ore pulp, and product is dewatered tailing on the sieve of high frequency fine screen.
The method for the dehydration of middle fine tailings, the sieve aperture of the high frequency fine screen are 0.2-0.5mm.
The method for the dehydration of middle fine tailings, the overflow weir of the spiral classifier are with U-typed mouth
Overflow mechanism.
Use single spiral classifier or high frequency fine screen that cannot obtain 13% to concentration for 20% pulp dewatering left
Material can be hauled.Sand return moisture is 19% or so after single spiral classifier dehydration.It is handled according to single high frequency fine screen, due to
Feedstock concentrations are low, need more high-frequency screens, take up a large area, on-the-sieve material moisture is also high.
Moisture is compared with moisture after combined dehydration after single spiral classifier dehydration
It can be seen from table using combined dehydration technique after, moisture averagely declines 6 percentage points, and effect is obvious.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the principle of the present invention, can also make several improvement and supplement, these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (3)
1. a kind of method for the dehydration of middle fine tailings, it is characterized in that: this method are as follows: adopt the tailing that granularity is 3-0.2mm
Primary dewatering is carried out with spiral classifier, the sand return product of spiral classifier carries out second dehydration, spiral point by high frequency fine screen
The overflow product of grade machine and the undersized product of high frequency fine screen are discharged as ore pulp, and product is dewatered tail on the sieve of high frequency fine screen
Mine.
2. the method according to claim 1 for the dehydration of middle fine tailings, it is characterized in that: the sieve of the high frequency fine screen
Sub-aperture is 0.2-0.5mm.
3. the method according to claim 1 for the dehydration of middle fine tailings, it is characterized in that: the spiral classifier
Overflow weir is the overflow mechanism with U-typed mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310803.7A CN109894254A (en) | 2017-12-11 | 2017-12-11 | A method of it is dehydrated for middle fine tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310803.7A CN109894254A (en) | 2017-12-11 | 2017-12-11 | A method of it is dehydrated for middle fine tailings |
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| Publication Number | Publication Date |
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| CN109894254A true CN109894254A (en) | 2019-06-18 |
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| CN201711310803.7A Pending CN109894254A (en) | 2017-12-11 | 2017-12-11 | A method of it is dehydrated for middle fine tailings |
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Citations (8)
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|---|---|---|---|---|
| RU2181628C2 (en) * | 2000-06-14 | 2002-04-27 | Государственное учреждение институт горного дела дальневосточного отделения РАН | Sluice box-free method of beneficiation of sands of man-made placer deposits of noble metals |
| CN101181699A (en) * | 2007-12-17 | 2008-05-21 | 中国铝业股份有限公司 | Ore washing method for bauxite |
| WO2010072276A1 (en) * | 2008-12-23 | 2010-07-01 | Maschinenfabrik Köppern Gmbh & Co. Kg | Method and apparatus for comminuting mineral ground product |
| CN201565352U (en) * | 2009-12-15 | 2010-09-01 | 蚌埠玻璃工业设计研究院 | Special spiral classifier for mineral separation |
| CN101850297A (en) * | 2010-06-13 | 2010-10-06 | 中国铝业股份有限公司 | Method for mineral dressing and silicon removal of bauxite |
| CN204294497U (en) * | 2014-12-01 | 2015-04-29 | 大余县萤通工贸有限公司 | Fluorite ore separate type screw classifying unit mahine |
| CN204338307U (en) * | 2014-12-16 | 2015-05-20 | 中国矿业大学 | The spiral classifier that a kind of height of weir plate is adjustable |
| CN106391298A (en) * | 2016-09-20 | 2017-02-15 | 昆明理工大学 | Closed circuit ore grinding classification method |
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2017
- 2017-12-11 CN CN201711310803.7A patent/CN109894254A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2181628C2 (en) * | 2000-06-14 | 2002-04-27 | Государственное учреждение институт горного дела дальневосточного отделения РАН | Sluice box-free method of beneficiation of sands of man-made placer deposits of noble metals |
| CN101181699A (en) * | 2007-12-17 | 2008-05-21 | 中国铝业股份有限公司 | Ore washing method for bauxite |
| WO2010072276A1 (en) * | 2008-12-23 | 2010-07-01 | Maschinenfabrik Köppern Gmbh & Co. Kg | Method and apparatus for comminuting mineral ground product |
| CN201565352U (en) * | 2009-12-15 | 2010-09-01 | 蚌埠玻璃工业设计研究院 | Special spiral classifier for mineral separation |
| CN101850297A (en) * | 2010-06-13 | 2010-10-06 | 中国铝业股份有限公司 | Method for mineral dressing and silicon removal of bauxite |
| CN204294497U (en) * | 2014-12-01 | 2015-04-29 | 大余县萤通工贸有限公司 | Fluorite ore separate type screw classifying unit mahine |
| CN204338307U (en) * | 2014-12-16 | 2015-05-20 | 中国矿业大学 | The spiral classifier that a kind of height of weir plate is adjustable |
| CN106391298A (en) * | 2016-09-20 | 2017-02-15 | 昆明理工大学 | Closed circuit ore grinding classification method |
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| 布鲁斯·富勒: "高频振动脱水筛", 《煤矿设计》 * |
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Application publication date: 20190618 |
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| RJ01 | Rejection of invention patent application after publication |