CN105817338A - Shear flotation method capable of improving recovery efficiency of micro-fine particle galena - Google Patents
Shear flotation method capable of improving recovery efficiency of micro-fine particle galena Download PDFInfo
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- CN105817338A CN105817338A CN201610352980.0A CN201610352980A CN105817338A CN 105817338 A CN105817338 A CN 105817338A CN 201610352980 A CN201610352980 A CN 201610352980A CN 105817338 A CN105817338 A CN 105817338A
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- galena
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
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- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a shear flotation method capable of improving recovery efficiency of micro-fine particle galena. The method comprises following steps: firstly, high-sulfur fine-grain inbuilt galena ore is subject to ore grinding treatment; secondly, a flotation reagent is added into ore pulp, and then shear air inflation pulp conditioning treatment is carried out; thirdly, through lead roughing work, lead roughing concentrates and lead roughing tailings are obtained; and fourthly, the lead roughing tailings are subject to lead scavenging work through the shear flotation method, and lead scavenging concentrates and lead scavenging tailings are obtained. Compared with the prior art, the shear flotation method capable of improving recovery efficiency of the micro-fine particle galena has the beneficial effects that after the high-sulfur galena with fine granularity inbuilt is subject to core grinding treatment, through air inflation shear pulp conditioning, in the roughing work, effective separation of the galena and iron pyrite can be achieved, and the quality of the lead concentrates is improved; and in the lead scavenging work, through shear floatation, the effect of strengthening the parts among the fine-grain galena, the flotation reagent and micro bubbles is achieved, and the micro-fine particle galena recovery efficiency is improved.
Description
Technical field
The invention belongs to Ore Dressing Engineering field, be specifically related to a kind of shearing method for floating improving microfine galena organic efficiency, the particularly method for floating of high-sulfur fine grain teeth cloth galena.
Background technology
Lead metal is irreplaceable heavy metal in current industrial evolution, and it is widely used in numerous key areas being related to national economic development and scientific and technological progress such as electrical industry, metallurgical industry, chemical industry.Along with the development of world industry, the demand general trend to lead metal is ever-increasing, and the Chinese manufacturing country as lead concentrate maximum in the world and country of consumption, its plumbing has critical role at world's plumbing.But no matter Chinese existing controlling proposals also has the biggest gap from selecting and purchasing scale or science and technology level with world-class bargh, and the lead sorting technology progress of current China is had higher requirement by this
The lead metal of China is primarily present in complicated lead-zinc sulfide ore, and containing various metals such as galena, sphalerite, pyrite in this type Ore, mineral deposit element is complicated, and association composition is more altogether, and mostly belongs to fine grain teeth cloth.As a example by Lingnan area lead-zinc deposit, in raw ore, particulate accounts for about 20% less than the galena particle diameter of 39 μm, in the gap of pyrite, sphalerite and stone-like pulse, a large amount of galena in filling, and lead minerals granularity is superfine, the galena of 10～30 μm more than 90% and sphalerite and pyrite densification symbiosis.Unique occurrence status of China's lead minerals causes its sorting difficulty bigger, reason is: 1. disseminated grain size is tiny, need to carry out fine grinding operation and could realize dissociating of galena and stone-like pulse, and after fine grinding, reduction due to galena Yu other sulfide mineral floatability difference, it is thus achieved that high-quality lead concentrate difficulty strengthens；2. having property of galena is crisp, the mineralogical character of easy argillization, and during fine grinding, the as easy as rolling off a log argillization of galena, the galena floatability after argillization declines, poor with floating agent action effect, which results in the prolongation of flotation flowsheet and the reduction of the response rate.
Summary of the invention
In order to overcome above-mentioned technological deficiency, the present invention provides a kind of shearing method for floating improving microfine galena organic efficiency, the method is while improving the microfine galena response rate, improve galena and pyritous FLOTATION SEPARATION efficiency, and be conducive to shortening the selected operation of existing lead and scanning work flow.
The technical solution used in the present invention is: a kind of shearing method for floating improving microfine galena organic efficiency, comprises the following steps:
1) high-sulfur fine-grained disseminated grain galena Ore is carried out ore grinding process；
2) add in ore pulp and carry out shearing inflation after floating agent and size mixing process；
3) roughly select operation by lead and obtain lead rougher concentration and lead rougher tailings；
4) lead rougher tailings is carried out lead by shearing floatation and scan operation, obtain lead scavenger concentrate and lead scans mine tailing.
Further, described step 4) in, in lead scans operation process, flotation machine impeller linear velocity is 8.5-15m/s.1.2～1.6 times of flotation machine impeller linear velocity raising to common flotation impeller linear velocity are carried out shearing flotation by the present invention, micro-bubble and strong turbulent fluctuation flow field is obtained by shear action, thus strengthen the action effect between microfine galena and collecting agent and bubble, improve the microfine galena response rate.
Further, described step 2) in, pulp density is 35%～40%.
Further, described step 2) shearing inflation size mixing in process, air charge is 1～1.5m3/m2·min。
Further, described step 2) shearing inflation size mixing in process, shearing the time of sizing mixing is 10～20min.In actual applications, roughly select the complexity of pyrite suppression in operation according to lead, the time of sizing mixing suitably can be adjusted.
Further, described step 2) shearing inflation size mixing in process, the rotating speed of surge tank impeller is 500～850r/min, and linear velocity is 8～12m/s.
Compared to prior art, a kind of shearing method for floating improving microfine galena organic efficiency of the present invention, can be made the high-sulfur galena of the embedding cloth of fine granularity after ore grinding processes, be sized mixing by inflation shearing, realize galena efficiently separate with pyritous roughly selecting operation, improve lead concentrate quality；By shearing flotation in lead scans operation, strengthen the effect between particulate galena and floating agent and microvesicle, improve the microfine galena response rate.The present invention is applicable to different types of fine-grained disseminated grain sulfide flotation, especially fine grain teeth cloth high-sulfur galena.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail, wherein:
Fig. 1 is a kind of flow chart shearing method for floating improving microfine galena organic efficiency of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Refer to Fig. 1, its a kind of flow chart shearing method for floating improving microfine galena organic efficiency being the present invention.A kind of shearing method for floating improving microfine galena organic efficiency that the present invention provides, comprises the following steps:
1) high-sulfur fine-grained disseminated grain galena Ore is carried out ore grinding process；
2) add in ore pulp and carry out shearing inflation after floating agent and size mixing process；Specifically, through step 1) ore grinding process after, controlling pulp density is 35%～40%, adds after floating agent, carries out shearing inflation and sizes mixing operation；Air charge is 1～1.5m3/m2Min, the shearing time of sizing mixing is 10～20min, and surge tank wheel speed is 500～850r/min, and linear velocity is 8～12m/s.Additionally, roughly select the complexity of pyrite suppression in operation according to lead, the time of sizing mixing suitably can be adjusted；
3) roughly select operation by lead and obtain lead rougher concentration and the lead rougher tailings of high-quality；
4) by shearing floatation, lead rougher tailings being carried out lead and scan operation, flotation machine impeller linear velocity is 8.5～15m/s, obtains lead scavenger concentrate and lead scans mine tailing；Obtain the action effect between micro-bubble and strong turbulent fluctuation flow field, strengthening microfine galena and collecting agent and bubble by shear action, improve the microfine galena response rate.
Compared to prior art, a kind of shearing method for floating improving microfine galena organic efficiency of the present invention, can be made the high-sulfur galena of the embedding cloth of fine granularity after ore grinding processes, be sized mixing by inflation shearing, realize galena efficiently separate with pyritous roughly selecting operation, improve lead concentrate quality；By shearing flotation in lead scans operation, strengthen the effect between particulate galena and floating agent and microvesicle, improve the microfine galena response rate.The present invention is applicable to different types of fine-grained disseminated grain sulfide flotation, especially fine grain teeth cloth high-sulfur galena.
Further illustrate below in conjunction with three specific embodiments and explain the present invention.Three following embodiments, select Guangdong Pb-Zn deposits, its raw ore leaded 4.24%, sulfur-bearing 28.52%.Through step 1) the granularity particle diameter of ore milling product after ore grinding be the 74 following accountings of μm be 85%-90%, pulp density is 35%～40%, Calx is used slurry pH to be controlled extremely > 13, add galena collecting agent and foaming agent carries out the operation of sizing mixing before lead roughly selects operation.
Embodiment 1
In the present embodiment, step 2) the inflation aeration quantity in processing of sizing mixing of shearing be 1m3/m2Min, surge tank wheel speed is 500r/min, and linear velocity is 8m/s, and the shear agitation time is 10min；Step 4) lead to scan flotation machine impeller linear velocity in operation be 8.5m/s.
Embodiment 2
In the present embodiment, step 2) the inflation aeration quantity in processing of sizing mixing of shearing be 1.2m3/m2Min, surge tank wheel speed is 600r/min, and linear velocity is 10m/s, and the shear agitation time is 12min；Step 4) lead to scan flotation machine impeller linear velocity in operation be 12m/s.
Embodiment 3
In the present embodiment, step 2) the inflation aeration quantity in processing of sizing mixing of shearing be 1.5m3/m2Min, surge tank wheel speed is 850r/min, and linear velocity is 12m/s, and the shear agitation time is 20min；Step 4) lead to scan flotation machine impeller linear velocity in operation be 15m/s.
The result of the test above three embodiment shearing method for floating using raising microfine galena organic efficiency of the present invention obtained contrasts with the result of the test of conventional flotation method, refers to table 1, and it is the plumbum floatation index contrast table of result of the test.
Table 1 plumbum floatation index contrast table (%)
As shown in Table 1, the shearing inflation of the present invention is sized mixing in processing procedure, sized mixing the time by inflation operation and prolongation, compared with conventional flotation, in the case of lead rougher concentration ensures that lead recovery is constant, in lead rougher concentration, the grade of lead substantially rises, and is conducive to improving lead concentrate quality, reduces the selected operation of follow-up lead；After lead roughly selects operation, lead improves lead recovery and the raising of grade in the wheel speed of flotation device, beneficially lead scavenger concentrate during scanning, and lead scans the reduction of lead grade in mine tailing.Compared with conventional flotation, shear method for floating and can be effectively improved the efficiency of separation of fine granularity sulphide ore.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction, therefore it is every without departing from technical solution of the present invention content, any amendment, equivalent variations and the modification made above example according to the technical spirit of the present invention, all still falls within the range of technical solution of the present invention.
Claims (6)
1. the shearing method for floating improving microfine galena organic efficiency, it is characterised in that: comprise the following steps:
1) high-sulfur fine-grained disseminated grain galena Ore is carried out ore grinding process；
2) add in ore pulp and carry out shearing inflation after floating agent and size mixing process；
3) roughly select operation by lead and obtain lead rougher concentration and lead rougher tailings；
4) lead rougher tailings is carried out lead by shearing floatation and scan operation, obtain lead scavenger concentrate and lead scans mine tailing.
A kind of shearing method for floating improving microfine galena organic efficiency the most according to claim 1, it is characterised in that: described step 4) in, in lead scans operation process, flotation machine impeller linear velocity is 8.5-15m/s.
A kind of shearing method for floating improving microfine galena organic efficiency the most according to claim 1, it is characterised in that: described step 2) in, pulp density is 35%～40%.
A kind of shearing method for floating improving microfine galena organic efficiency the most according to claim 3, it is characterised in that: described step 2) shearing inflation size mixing process in, air charge is 1～1.5m3/m2·min。
A kind of shearing method for floating improving microfine galena organic efficiency the most according to claim 4, it is characterised in that: described step 2) shearing inflation size mixing process in, shear the time of sizing mixing be 10～20min.
A kind of shearing method for floating improving microfine galena organic efficiency the most according to claim 5, it is characterised in that: described step 2) shearing inflation size mixing process in, the rotating speed of surge tank impeller is 500～850r/min, and linear velocity is 8～12m/s.
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| CN201610352980.0A CN105817338A (en) | 2016-05-24 | 2016-05-24 | Shear flotation method capable of improving recovery efficiency of micro-fine particle galena |
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| CN201610352980.0A CN105817338A (en) | 2016-05-24 | 2016-05-24 | Shear flotation method capable of improving recovery efficiency of micro-fine particle galena |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715411A (en) * | 2020-07-01 | 2020-09-29 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN114226059A (en) * | 2021-11-30 | 2022-03-25 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for improving recovery rate of graded tailings |
Citations (4)
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| JPS4816764B1 (en) * | 1969-05-02 | 1973-05-24 | ||
| CN103008116A (en) * | 2012-12-13 | 2013-04-03 | 广西华锡集团股份有限公司 | Double-flow injection-type floatation method and double-flow injection-type floatation device |
| CN103909020A (en) * | 2014-04-09 | 2014-07-09 | 湖南有色金属研究院 | Flotation separation inhibitor and separation method of galena, pyrite and sphalerite |
| CN104841571A (en) * | 2015-05-29 | 2015-08-19 | 武汉工程大学 | Novel flotation column and flotation method thereof |
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2016
- 2016-05-24 CN CN201610352980.0A patent/CN105817338A/en active Pending
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| JPS4816764B1 (en) * | 1969-05-02 | 1973-05-24 | ||
| CN103008116A (en) * | 2012-12-13 | 2013-04-03 | 广西华锡集团股份有限公司 | Double-flow injection-type floatation method and double-flow injection-type floatation device |
| CN103909020A (en) * | 2014-04-09 | 2014-07-09 | 湖南有色金属研究院 | Flotation separation inhibitor and separation method of galena, pyrite and sphalerite |
| CN104841571A (en) * | 2015-05-29 | 2015-08-19 | 武汉工程大学 | Novel flotation column and flotation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715411A (en) * | 2020-07-01 | 2020-09-29 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN111715411B (en) * | 2020-07-01 | 2021-08-27 | 中南大学 | Beneficiation method for high-sulfur lead-zinc ore |
| CN114226059A (en) * | 2021-11-30 | 2022-03-25 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for improving recovery rate of graded tailings |
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Application publication date: 20160803 |