CN108339671A - A kind of method for separating of chalcopyrite and molybdenite - Google Patents
A kind of method for separating of chalcopyrite and molybdenite Download PDFInfo
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- CN108339671A CN108339671A CN201810125353.2A CN201810125353A CN108339671A CN 108339671 A CN108339671 A CN 108339671A CN 201810125353 A CN201810125353 A CN 201810125353A CN 108339671 A CN108339671 A CN 108339671A
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- molybdenite
- chalcopyrite
- copper
- separating
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention discloses the method for separating of a kind of chalcopyrite and molybdenite, belong to Mineral Processing Engineering technical field.The present invention by copper-molybdenum bulk concentrate it is levigate after, pre-processed by low temperature plasma, agitator treating in lye be added so that molybdenite surface is hydrophobic, and chalcopyrite surface hydrophilic, so as to both realize separation.Then the kerosene through ultrasonic emulsification is added and makees collecting agent, better collecting effect can be played.The method of the present invention can greatly simplify the technological process of common bulk flotation copper-cobalt ore, can reduce collector dosage, and almost can reach preferable sorting index without inhibitor and foaming agent is added.
Description
Technical field
The invention belongs to Mineral Processing Engineering technical fields, and in particular to a kind of method for separating of chalcopyrite and molybdenite.
Background technology
China's molybdenum ore resource is abundant, mainly exists in the form of sulphide ore, but single molybdenum deposit is few, and intergrowth mineral is more and flat
Equal grade is low.Currently, most molybdenums are recycled from copper-molybdenum ore, wherein copper mineral in typical copper-molybdenum ore Porphyry Copper Ore
Mainly based on chalcopyrite, molybdenum ore object exists generally in the form of molybdenite.This kind of ore generally low, disseminated grain size with grade
The features such as thin, while molybdenite is similar to the native floatability of chalcopyrite, causes copper-molybdenum separation difficult.Often take mixing at present
The technological process of flotation-copper-cobalt ore is detached.Can this technological process realize that the key of copper-cobalt ore is inhibitor
Selection, commonly use cyanide, Knox class and vulcanized sodium are used as inhibitor, but extremely toxic property, pollute environment, foam is difficult to
The problems such as control and dosing are larger.For these reasons, material surface can be improved in conjunction with lower temperature plasma technology
While performance, the characteristics of can still keeping bulk properties, a kind of method for separating of new chalcopyrite and molybdenite is developed.
Invention content
The purpose of the present invention is to provide a kind of method for separating of new chalcopyrite and molybdenite, can effectively solve at present
The difficult problem of copper-molybdenum separation.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of method for separating of chalcopyrite and molybdenite comprising following steps：
1）Copper-molybdenum bulk concentrate is milled to ore grain size and accounts for the 65~95% of total ore quality less than 0.074mm, makes mineral composition
Basic monomer dissociates；
2）By sample by output power 10W, frequency is 7~50MHz, the oxygen plasma generator of 13.3~1333Pa of pressure
Pretreatment 1~10 minute；
3）By plasma treated sample preparation at the solution of 20~45wt% concentration, potassium hydroxide solution is added and is adjusted to
PH value is 8~10, and carries out magnetic agitation and wash 5~120 minutes；
4）Collecting agent kerosene is carried out ultrasonic emulsification to handle 1~5 minute；
5）By step 3）Flotation cell is added in sample after washing, adjusts pulp density to 10~25wt%, stirring 2~press after five minutes
Step 4 is added in the amount that 40~500g is added in raw ore per ton）Kerosene after emulsification treatment obtains qualified molybdenum through conventional floatation process
Concentrate and copper concentrate.
The remarkable advantage of the present invention is：The native floatability of molybdenite and chalcopyrite is all preferable, by low-temperature plasma
After body processing, molybdenite surface forms the oxide of molybdenum, and chalcopyrite surface forms the oxide of iron so that the two surface is all
Become hydrophilic.Using the washing of lye, molybdenite surface restores its hydrophobicity, and chalcopyrite surface is still hydrophilic, so as to
To realize the separation of the two.The iron ion of chalcopyrite dissolving, which can also be deposited in molybdenite surface, reduces its floatability, by kerosene breast
It can improve this phenomenon as collecting agent after change, because the kerosene after emulsification can fully be covered in the surface of molybdenite, from
And play good collecting effect.The method of the present invention can greatly simplify the technological process of common bulk flotation-copper-cobalt ore,
Collector dosage can be reduced, and almost do not have to addition inhibitor and foaming agent to reach preferable sorting index.
Specific implementation mode
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to of the present invention
Technical solution is described further, but following examples is only present invention example therein, does not represent Ben Fa
Rights protection scope defined by bright, the scope of the present invention are subject to claims.
Embodiment 1
Experiment copper-molybdenum bulk concentrate used is derived from the large-scale copper-molybdenum in Yunnan, the levigate granule content for being less than 0.074mm to granularity
It is 80%, the grade for measuring Cu and Mo in copper-molybdenum bulk concentrate is respectively 14.5% and 30.2%.
It takes copper-molybdenum bulk concentrate to make sample, passes through output power 10W, frequency 13.56MHz, the oxygen plasma of pressure 100Pa
Body generator pre-processes 1 minute；By plasma treated sample preparation at the solution of 25wt% concentration, potassium hydroxide is added
It is 9 that solution, which is adjusted to pH value, and magnetic agitation is washed 120 minutes；By after washing sample be added flotation cell, adjust pulp density to
15wt%, 2 minutes kerosene of emulsification treatment is added in 120g is added in stirring by raw ore per ton amount after 3 minutes, through conventional floatation process
Obtain molybdenum concntrate and copper concentrate.
The grade of Mo is 45.9% in molybdenum concntrate, and the rate of recovery reaches 82.5%；The grade of Cu is 29.3% in copper concentrate, recycling
Rate reaches 92.4%.
Embodiment 2
Experiment copper-molybdenum bulk concentrate used is derived from the large-scale copper-molybdenum in Yunnan, the levigate granule content for being less than 0.074mm to granularity
It is 75%, the grade for measuring Cu and Mo in copper-molybdenum bulk concentrate is respectively 14.7% and 30.6%.
It takes copper-molybdenum bulk concentrate to make sample, passes through output power 10W, frequency 13.56MHz, the oxygen plasma of pressure 100Pa
Body generator pre-processes 5 minutes；By plasma treated sample preparation at the solution of 30wt% concentration, potassium hydroxide is added
Solution to pH value is 8, and magnetic agitation is washed 60 minutes；By after washing sample be added flotation cell, adjust pulp density to
20wt%, 2 minutes kerosene of emulsification treatment is added in 160g is added in stirring by raw ore per ton amount after 3 minutes, through conventional floatation process
Obtain molybdenum concntrate and copper concentrate.
The grade of Mo is 44.5% in molybdenum concntrate, and the rate of recovery reaches 80.5%；The grade of Cu is 29.6% in copper concentrate, recycling
Rate reaches 89.9%.
Embodiment 3
Experiment copper-molybdenum bulk concentrate used is derived from the large-scale copper-molybdenum in Yunnan, the levigate granule content for being less than 0.074mm to granularity
It is 85%, the grade for measuring Cu and Mo in copper-molybdenum bulk concentrate is respectively 14.4% and 30.1%.
It takes copper-molybdenum bulk concentrate to make sample, passes through output power 10W, frequency 13.56MHz, the oxygen plasma of pressure 100Pa
Body generator pre-processes 10 minutes；By plasma treated sample preparation at the solution of 35wt% concentration, potassium hydroxide is added
It is 10 that solution, which is adjusted to pH value, and magnetic agitation is washed 10 minutes；By after washing sample be added flotation cell, adjust pulp density to
10wt%, 2 minutes kerosene of emulsification treatment is added in 200g is added in stirring by raw ore per ton amount after 3 minutes, through conventional floatation process
Obtain molybdenum concntrate and copper concentrate.
The grade of Mo is 42.5% in molybdenum concntrate, and the rate of recovery reaches 79.4%；The grade of Cu is 29.6% in copper concentrate, recycling
Rate reaches 90.0%.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (4)
1. the method for separating of a kind of chalcopyrite and molybdenite, it is characterised in that：Include the following steps：
1）Copper-molybdenum bulk concentrate is milled to ore grain size and accounts for the 65~95% of total ore quality less than 0.074mm；
2）Sample is pre-processed 1~10 minute by oxygen plasma generator；
3）By plasma treated sample preparation at solution, potassium hydroxide solution is added and adjusts pH, and carries out magnetic agitation
Washing 5~120 minutes；
4）Collecting agent kerosene is carried out ultrasonic emulsification to handle 1~5 minute；
5）By step 3）Flotation cell is added in sample after washing, adjusts pulp density and stirs 2~5 minutes, adds step 4）
Then kerosene after emulsification treatment obtains qualified molybdenum concntrate and copper concentrate through conventional floatation process.
2. the method for separating of chalcopyrite according to claim 1 and molybdenite, it is characterised in that：Step 2）Middle oxygen plasma
The technological parameter of body generator is：Output power is 10W, and frequency is 7~50MHz, and pressure is 13.3~1333Pa.
3. the method for separating of chalcopyrite according to claim 1 and molybdenite, it is characterised in that：Step 3）Middle sample preparation
A concentration of 20~45wt% of solution is added potassium hydroxide solution and adjusts pH value to 8~10.
4. the method for separating of chalcopyrite according to claim 1 and molybdenite, it is characterised in that：Step 5）Middle adjusting ore pulp
To 10~25wt%, the amount that 40~500g is added by raw ore per ton for kerosene is added concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125353.2A CN108339671A (en) | 2018-02-08 | 2018-02-08 | A kind of method for separating of chalcopyrite and molybdenite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810125353.2A CN108339671A (en) | 2018-02-08 | 2018-02-08 | A kind of method for separating of chalcopyrite and molybdenite |
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| CN108339671A true CN108339671A (en) | 2018-07-31 |
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| CN201810125353.2A Pending CN108339671A (en) | 2018-02-08 | 2018-02-08 | A kind of method for separating of chalcopyrite and molybdenite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167614A (en) * | 2019-11-25 | 2020-05-19 | 南华大学 | Flotation method for copper-molybdenum sulfide ore |
| CN114769007A (en) * | 2022-03-08 | 2022-07-22 | 中国矿业大学 | Method for preparing low-rank coal flotation reagent through compounding and modification |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2539448C1 (en) * | 2013-10-17 | 2015-01-20 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method for flotation treatment of flowing and aged mine refuses containing copper and molybdenum minerals |
| CN106881201A (en) * | 2017-01-20 | 2017-06-23 | 内蒙古科技大学 | A kind of copper-lead flotation separation method based on surface oxidation selective precipitation principle |
-
2018
- 2018-02-08 CN CN201810125353.2A patent/CN108339671A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2539448C1 (en) * | 2013-10-17 | 2015-01-20 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method for flotation treatment of flowing and aged mine refuses containing copper and molybdenum minerals |
| CN106881201A (en) * | 2017-01-20 | 2017-06-23 | 内蒙古科技大学 | A kind of copper-lead flotation separation method based on surface oxidation selective precipitation principle |
Non-Patent Citations (2)
| Title |
|---|
| TSUYOSHI HIRAJIMA ET AL.: "Selective flotation of chalcopyrite and molybdenite with plasma pre-treatment", 《MINERALS ENGINEERING》 * |
| 朱子祺: "等离子体反浮选分离黄铁矿与煤的可行性研究", 《洁净煤技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167614A (en) * | 2019-11-25 | 2020-05-19 | 南华大学 | Flotation method for copper-molybdenum sulfide ore |
| CN114769007A (en) * | 2022-03-08 | 2022-07-22 | 中国矿业大学 | Method for preparing low-rank coal flotation reagent through compounding and modification |
| CN114769007B (en) * | 2022-03-08 | 2024-05-28 | 中国矿业大学 | Method for preparing low-rank coal flotation reagent by compounding-modifying |
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