CN108993760A - A kind of low-grade difficulty of weathering selects manganese ore sorting process - Google Patents
A kind of low-grade difficulty of weathering selects manganese ore sorting process Download PDFInfo
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- CN108993760A CN108993760A CN201810757510.1A CN201810757510A CN108993760A CN 108993760 A CN108993760 A CN 108993760A CN 201810757510 A CN201810757510 A CN 201810757510A CN 108993760 A CN108993760 A CN 108993760A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
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Abstract
The invention discloses a kind of low-grade difficulties of weathering to select manganese ore sorting process, belong to more metal ore dressing technical fields, the present invention removes the particulate grade particles in raw ore first, milling ore granularity is controlled by prescreening, useless machine is thrown using photoelectricity ore is carried out to throw useless roughing in advance, to play the role of preconcentration concentrate, reduce the treating capacity of subsequent technique, the ball-milling treatment of traditional handicraft is replaced using crushing circuit, the processing capacity of jigging and shaking table can farthest be reduced, with energy saving, reduce production cost, by Mineral Classification at the material of plurality of narrow grade, utmostly to improve ore recovery ratio, entire technique is without outer doping, process flow is simple, the manganese ore rate of recovery is high (reaching 80% or more), it is easy to implement, select factory's waste water can direct outlet after simple process, the invention belongs to environment and ecology are friendly Type ore-dressing technique is of great significance to the sustainable development of China's economy.
Description
Technical field
The invention belongs to more metal ore dressing technical fields, and in particular to a kind of low-grade difficulty of weathering selects manganese ore sorting process.
Background technique
In recent years, flourishing with Mining Development, the high-grade manganese resource easily selected is increasingly rare, and many difficult choosings
Low-grade manganese ore but since sorting technology lag becomes slow-witted mine.Currently, it is directed to low-grade tungsten ore, tin ore both at home and abroad, it is non-
Photoelectricity is all employed on metallic ore and refuse classification throws useless technology in advance, which can be greatly lowered concentrate production cost,
The economic benefit of enterprise is improved, but the technology fails to promote the use of on manganese ore, main cause is that most of manganese ore belongs to wind
The high rock of change type oxygenation efficiency, primary fine particle stage material excessively cause to be easy pollution photometric sorter in process of production, lead to light
Electric sorting machine cisco unity malfunction, for this purpose, how to effectively reduce influence of the primary fine particle stage material to photometric sorter becomes
Key, further, since the difference of ore properties, in photometric sorting, raw ore feed particle size slightly also limits manganese ore excessively and returns manganese ore
The raising of yield.
Domestic and international dressing plant's pulverizing-screening system and ball grinder graded system circuit energy consumption account for about 9% He of full factory's energy consumption respectively
55%, but ball milling and crushing efficiency, than being about 1:10, therefore, being become using efficiency crushing equipment and crushing process process reduces choosing
The key of factory's production cost.In the assorting room of manganese ore, the mineral processing circuit routinely used has gravity treatment, magnetic separation, flotation, washes
Mine, leaching and joint process are difficult to improve recovery rate in ore-dressing using single re-selection procedure；Using magnetic separation, flotation or
It is to need to grind in ore when leaching process, ore grinding energy consumption is high, and containing big in the beneficiation wastewater of flotation and leaching process generation
The beneficiation reagent of amount is easy to do great damage to ecological environment without direct outlet is handled；And use flotation and magnetic dressing process
When, granularity of concentrate is thinner, and dewatering process is complicated, and investment and operation cost are high；When using washup process, ore water consumption is big, washes
Run, drip, leak are more between mine car, and plant operations environment is dirty, unrest, difference.
Summary of the invention
That the purpose of the present invention is to provide a kind of process flows is simple, production cost is low low with the high weathering of the manganese ore rate of recovery
Grade difficulty selects manganese ore sorting process.
The low-grade difficulty of this weathering provided by the invention selects manganese ore sorting process, comprising the following steps:
(1) raw ore is subjected to prescreening, removes particulate grade particles, obtains on-the-sieve material；
(2) on-the-sieve material obtained by step (1) is crushed, crushed product is made to reach predetermined fineness；
(3) crushed product obtained by step (2) is carried out throwing useless roughing 1 in advance, obtains 1 tailing of 1 concentrate of roughing and roughing；
(4) 1 tailing of roughing obtained by step (3) is carried out throwing useless roughing 2 in advance, obtains 2 tailing of 2 concentrate of roughing and roughing,
2 concentrate of roughing is broken to setting fineness through ultra-fine, then handles through classification, shaking table, dense and filtering means dehydration, obtains manganese ore product,
2 tailing of roughing enters Tailings Dam or in addition individually processing；
(5) screened, jigging, gravity dehydration processing by 1 concentrate of roughing obtained by step (3), obtain manganic concerntrate.
Preferably, in the step (1), prescreening is carried out to raw ore using heavy-duty shocks sieve, to remove fine fraction
Grain, particulate grade particles enter Tailings Dam or in addition individually processing.
Preferably, the granularity of the particulate grade particles is≤10mm.
Preferably, in the step (2), using two sections-closed circuit crushing sieving circuit, make the granularity of crushed product reach-
20mm。
Preferably, the step (3), in (4), useless machine is thrown using photoelectricity and carries out throwing useless roughing in advance, to play pre- getting rich first
The effect for collecting concentrate, reduces the treating capacity of subsequent technique.
Preferably, in the step (4), 2 concentrate of roughing is handled through ultrafine grinding, make the granularity of ultrafine grinding product reach-
3mm, ultrafine grinding product enter hydraulic classiciation case and carry out classification processing, be classified into -3~+0.15mm, -0.15~+0.074mm, -
The material of tri- kinds of size fractionateds of 0.074mm, the material of three kinds of size fractionateds respectively enter in shaking table, obtain table concentrate and shaking table
Tailing, table concentrate obtain manganese ore product through dense, filtering means dehydration processing, and shaking table tailing enters Tailings Dam or in addition individually locates
Reason.
Preferably, in the step (5), 1 concentrate of roughing enter vibrating screen carry out screening process, be divided into -20~+10mm, -
The product of 10~+2mm and three kinds of size fractionateds of -2mm, the product of three kinds of size fractionateds respectively enter in jigging machine, obtain jigging
Concentrate and jigging tailing, jig concentrate are handled using gravity dehydration, obtain manganic concerntrate, and jigging tailing enters Tailings Dam or in addition single
It stays alone reason.
Preferably, the gravity dehydration processing uses moto-vibro screen or coal tub elevator.
Compared with prior art, advantageous effects of the invention are as follows:
The low-grade difficulty of this weathering provided by the invention selects manganese ore sorting process, the first fine fraction in removing raw ore
Grain controls milling ore granularity by prescreening, throws useless machine using photoelectricity and carries out throwing useless roughing in advance to ore, pre- to play
It is first enriched with the effect of concentrate, reduces the treating capacity of subsequent technique, the ball-milling treatment of traditional handicraft is replaced using crushing circuit, it can be with
The processing capacity of jigging and shaking table is farthest reduced, with energy saving, production cost is reduced, by Mineral Classification at plurality of narrow
The material of grade, utmostly to improve ore recovery ratio, for entire technique without outer doping, process flow is simple, and manganese ore returns
High income (reaches 80% or more, higher than the manganese ore rate of recovery in common process), easy to implement, selects factory's waste water after simple process
Can direct outlet there is weight to the sustainable development of China's economy the invention belongs to environment and Eco-friendly ore-dressing technique
Want meaning.
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention 1.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, rather than whole embodiments, based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses, present invention will be further explained below with reference to the attached drawings and specific examples.
Embodiment 1
By taking Shaanxi somewhere treating capacity is 2000t/d manganese ore as an example, the manganese ore is mainly based on manganese carbonate, fine fraction in ore
Material is more, selects manganese ore sorting process using the low-grade difficulty of weathering of the present invention, comprising the following steps:
(1) prescreening: entering heavy-duty shocks sieve screening without broken raw ore, and removing granularity is the≤particulate of 10mm
Grade particles, undersize material enter Tailings Dam or in addition individually processing；
(2) coarse crushing+fine crushing: using two sections-closed circuit crushing sieving circuit, and crushed product size is controlled in -20mm；
(3) useless machine is thrown using photoelectricity qualified crushed product is carried out to throw useless roughing 1 in advance, obtain 1 concentrate of roughing and thick
Select 1 tailing；
(4) 1 tailing of roughing carries out throwing useless roughing 2 in advance, obtains 2 tailing of 2 concentrate of roughing and roughing, 2 concentrate of roughing is through super
It is fine crushing that ultrafine grinding product enters hydraulic classiciation case and carries out classification processing to -3mm, be classified into -3~+0.15mm, -0.15~+
The material of three kinds of size fractionateds of 0.074mm, -0.074mm, the material of three kinds of size fractionateds respectively enter in shaking table, obtain shaking table
Concentrate and shaking table tailing, table concentrate obtain manganese ore product through the processing of dense, filtering means dehydration, shaking table tailing enter Tailings Dam or
In addition individually processing.
(5) 1 concentrate of roughing enters vibrating screen progress screening process, is divided into -20~+10mm, -10~+2mm and three kinds of -2mm
The product of the product of size fractionated, three kinds of size fractionateds respectively enters in jigging machine, obtains jig concentrate and jigging tailing, jigging
Concentrate carries out gravity dehydration processing using moto-vibro screen, obtains manganic concerntrate, and jigging tailing enters Tailings Dam or in addition individually locates
Reason.
Using the rate of recovery of manganese ore after present invention process, selecting factory's energy consumption is 18Kw.h/t raw ore, is tried as a comparison for 88%
It tests, using the manganese carbonate ore in embodiment 1 as sample ,-gravity treatment jigging-ore grinding-gravity table process is crushed using conventional washup-,
Recovery rate in ore-dressing is 85%, and selecting factory's energy consumption is 28Kw.h/t raw ore.
Embodiment 2
By taking Inner Mongol somewhere treating capacity is 1000t/d manganese ore as an example, the manganese ore is mainly based on manganese oxide, particulate in ore
Grade material is more, and using manganese ore sorting process identical with the embodiment of the present invention 1, the rate of recovery of final manganese ore is 81%, selects factory's energy
Consumption is 16Kw.h/t raw ore, is tested as a comparison, using the manganese oxide ore in embodiment 2 as sample, using conventional washup-it is broken-
Ore grinding-gravity table process, recovery rate in ore-dressing 80%, selecting factory's energy consumption is 26Kw.h/t raw ore.
Embodiment 3
By taking In A Certain Place of Xinjiang treating capacity is 600t/d manganese ore as an example, the manganese ore is mainly based on manganese oxide, fine fraction in ore
Material is more, and using manganese ore sorting process identical with the embodiment of the present invention 1, the rate of recovery of final manganese ore is 88%, selects factory's energy consumption
It for 18Kw.h/t raw ore, tests as a comparison, using the manganese oxide ore in embodiment 3 as sample, using conventional broken-ore grinding-magnetic
Choosing-re-selection procedure, recovery rate in ore-dressing 84%, selecting factory's energy consumption is 27Kw.h/t raw ore.
Therefore, present invention process process is simple, and convenient for operation, production cost is low, and the manganese ore rate of recovery is high, is easy to industry
Metaplasia produces, and provides a kind of technical strategies for the exploitation of low-grade manganese.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of low-grade difficulty of weathering selects manganese ore sorting process, which comprises the following steps:
(1) raw ore is subjected to prescreening, removes particulate grade particles, obtains on-the-sieve material；
(2) on-the-sieve material obtained by step (1) is crushed, crushed product is made to reach predetermined fineness；
(3) crushed product obtained by step (2) is carried out throwing useless roughing 1 in advance, obtains 1 tailing of 1 concentrate of roughing and roughing；
(4) 1 tailing of roughing obtained by step (3) is carried out throwing useless roughing 2 in advance, obtains 2 tailing of 2 concentrate of roughing and roughing, roughing 2
Concentrate is broken to setting fineness through ultra-fine, then handles through classification, shaking table, dense and filtering means dehydration, obtains manganese ore product, roughing 2
Tailing enters Tailings Dam or in addition individually processing；
(5) screened, jigging, gravity dehydration processing by 1 concentrate of roughing obtained by step (3), obtain manganic concerntrate.
2. the low-grade difficulty of weathering selects manganese ore sorting process according to claim 1, which is characterized in that in the step (1), adopt
Prescreening is carried out to raw ore with heavy-duty shocks sieve, particulate grade particles enter Tailings Dam or in addition individually processing.
3. the low-grade difficulty of weathering according to claim 1 or claim 2 selects manganese ore sorting process, which is characterized in that the fine fraction
The granularity of grain is≤10mm.
4. the low-grade difficulty of weathering selects manganese ore sorting process according to claim 1, which is characterized in that in the step (2), adopt
With two sections-closed circuit crushing sieving circuit, the granularity of crushed product is made to reach -20mm.
5. the low-grade difficulty of weathering selects manganese ore sorting process according to claim 1, which is characterized in that the step (3), (4)
In, useless machine is thrown using photoelectricity and carries out throwing useless roughing in advance.
6. the low-grade difficulty of weathering selects manganese ore sorting process according to claim 1, which is characterized in that in the step (4), slightly
It selects 2 concentrate to handle through ultrafine grinding, the granularity of ultrafine grinding product is made to reach -3mm, ultrafine grinding product enters hydraulic classiciation case and divided
Grade processing, be classified into -3~+0.15mm, -0.15~+0.074mm, three kinds of size fractionateds of -0.074mm material, three kinds of differences
The material of grade respectively enters in shaking table, obtains table concentrate and shaking table tailing, and table concentrate is handled through dense, filtering means dehydration,
Manganese ore product is obtained, shaking table tailing enters Tailings Dam or in addition individually processing.
7. the low-grade difficulty of weathering selects manganese ore sorting process according to claim 1, which is characterized in that in the step (5), slightly
It selects 1 concentrate to enter vibrating screen and carries out screening process, be divided into the production of -20~+10mm, -10~+2mm and three kinds of size fractionateds of -2mm
The product of product, three kinds of size fractionateds respectively enters in jigging machine, obtains jig concentrate and jigging tailing, and jig concentrate uses gravity
Dehydration, obtains manganic concerntrate, and jigging tailing enters Tailings Dam or in addition individually processing.
8. according to claim 1 or the 7 low-grade difficulties of weathering select manganese ore sorting process, which is characterized in that the gravity dehydration
Processing uses moto-vibro screen or coal tub elevator.
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| CN201810757510.1A CN108993760B (en) | 2018-07-11 | 2018-07-11 | Weathered low-grade refractory manganese ore sorting process |
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| CN201810757510.1A CN108993760B (en) | 2018-07-11 | 2018-07-11 | Weathered low-grade refractory manganese ore sorting process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639688A (en) * | 2019-10-14 | 2020-01-03 | 广东省资源综合利用研究所 | Beneficiation and pre-enrichment method for weathered calcite carbonate type rare earth ore |
| CN111298956A (en) * | 2020-03-10 | 2020-06-19 | 中国地质科学院矿产综合利用研究所 | Separation method of low-grade fluorite barite paragenic ore rich in calcite |
| CN112570137A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Beneficiation method for separating zirconite by using grading jigger |
| CN115625045A (en) * | 2022-10-19 | 2023-01-20 | 赣州有色冶金研究所有限公司 | Sorting method of vein dip-dyeing type black-white tungsten paragenetic ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110639688A (en) * | 2019-10-14 | 2020-01-03 | 广东省资源综合利用研究所 | Beneficiation and pre-enrichment method for weathered calcite carbonate type rare earth ore |
| CN110639688B (en) * | 2019-10-14 | 2021-08-10 | 广东省资源综合利用研究所 | Beneficiation and pre-enrichment method for weathered calcite carbonate type rare earth ore |
| CN111298956A (en) * | 2020-03-10 | 2020-06-19 | 中国地质科学院矿产综合利用研究所 | Separation method of low-grade fluorite barite paragenic ore rich in calcite |
| CN111298956B (en) * | 2020-03-10 | 2020-11-24 | 中国地质科学院矿产综合利用研究所 | Separation method of low-grade fluorite barite paragenic ore rich in calcite |
| CN112570137A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Beneficiation method for separating zirconite by using grading jigger |
| CN115625045A (en) * | 2022-10-19 | 2023-01-20 | 赣州有色冶金研究所有限公司 | Sorting method of vein dip-dyeing type black-white tungsten paragenetic ore |
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