CN108480056A - A method of it is sized mixing based on magnetic-particle intensified Daqu - Google Patents
A method of it is sized mixing based on magnetic-particle intensified Daqu Download PDFInfo
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- CN108480056A CN108480056A CN201810266011.2A CN201810266011A CN108480056A CN 108480056 A CN108480056 A CN 108480056A CN 201810266011 A CN201810266011 A CN 201810266011A CN 108480056 A CN108480056 A CN 108480056A
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- magnetic
- particle
- coal
- agitator
- coal slurry
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- 239000006249 magnetic particle Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 35
- 239000003250 coal slurry Substances 0.000 claims abstract description 28
- 238000005188 flotation Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000006148 magnetic separator Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 238000009991 scouring Methods 0.000 claims abstract description 4
- 239000002283 diesel fuel Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000007885 magnetic separation Methods 0.000 claims 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 235000015076 Shorea robusta Nutrition 0.000 abstract description 2
- 244000166071 Shorea robusta Species 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method of it is sized mixing based on magnetic-particle intensified Daqu, is suitable for the flotation size mixing of the high grey difficult separation coal of microfine.First agitator is added in coal slurry and magnetic-particle by this method together, next adds flotation collector stirring, then floatation frother is added, coal slurry after stirring is overflowed by agitator overflow port, finally enter the magnetic-particle in magnetic separator recycling coal slurry, the magnetic-particle of magnetic separator recycling returns to be recycled in agitator, and the tailing of magnetic separator then enters follow-up floatation equipment and carries out flotation.Advantage：By adding magnetic-particle in coal slurry whipping process, utilize the speed difference moved between magnetic-particle and coal particle in stirring field of turbulent flow, strengthen shearing and scouring of the magnetic-particle to the high grey difficult separation coal surface of microfine, promote collecting agent in the absorption on coal grain surface, the surface nature difference for strengthening the high grey minerals of the shales such as coal and spoil, improves the hydrophobicity and floatability of coal.
Description
Technical field
The present invention relates to a kind of methods sized mixing based on magnetic-particle intensified Daqu, are particularly suitable for the difficult choosing of the high ash of microfine
It is used when the flotation size mixing of coal slime.
Background technology
To improve coal slime flotation efficiency, domestic and international researcher touches from ore pulp dispersion, reagent emulsifying, ore pulp and medicament
Mineral surface modification etc. has done a lot of research work.The facility of sizing mixing applied in industrial production at present has agitator, ore pulp
Preprocessor, kaskad apparatus for pre-flotation pulp conditioning etc. are primarily intended to realize the pre- place of ore pulp using stirring, reagent emulsifying and its hybrid mode
Reason, has their own advantages in its function and feature.But these methods all be by floating agent (hydrophobic mineral oils, such as
Kerosene or diesel oil) be covered in coal surface make its surface occur physics-chemical change.Due to hydrophobic mineral oils indissoluble
Yu Shui, the dispersion degree in black water is small, and the contact with coal is limited, and therefore, it is difficult to fill only to lean on the surface chemistry activation of medicament
Covering is divided to be dispersed on the coal grain in ore pulp.In addition, also being achieved with technical aspect in the special size mixing equipment of Flotation Reagent Emulsion
Some new developments, it is therefore an objective to which the mixability for improving floating agent and ore pulp reduces the consumption of medicament, which is mainly profit
With Flotation Reagent Emulsion Station medicament is first dispersed into micronized drug drop in a small amount of water, emulsion is made, then be added to ore pulp
Middle mixing, flotation.However, for the high grey difficult separation coal of microfine, these means are all difficult to meet its specific high dispersive, live by force
Change, the requirement of efficient making contact, auxiliary can only be played the role of and sized mixing, cannot really realize that the high grey difficult separation coal of microfine is efficient
The purpose of flotation size mixing.Realize that the difficult point that the high grey difficult separation coal efficient flotation separation of microfine is sized mixing essentially consists in：On the one hand how to make micro-
Fine slime exposes fresh coal surface, on the other hand makes ore pulp and medicament fully dispersed, and reaches " effectively contact ".
Invention content
Shortcoming in view of the above technology, provides that a kind of method is simple, and effect of sizing mixing is good, and it is floating to be effectively improved traditional coal slime
It recruits the method sized mixing based on magnetic-particle intensified Daqu of slurry.
To realize the above-mentioned technical purpose, the method for the invention sized mixing based on magnetic-particle intensified Daqu is in step：
Mass concentration will be diluted with water into delivering dry coal slurry first, agitator is added after the coal slurry between 8%~12%,
Secondly agitator is added in magnetic-particle and flotation collector and starts to be mixed, continue that flotation blistering is added into agitator
Agent simultaneously continues to stir, and the coal slurry after stirring is overflowed by agitator overflow port, and coal slurry after the stirring of spilling is fed magnetic separator,
The magnetic-particle in coal slurry is recycled using magnetic separator, the magnetic-particle of magnetic separator recycling, which continuously adds in agitator, to be recycled,
The tailing of magnetic separator is then included into follow-up floatation equipment and carries out flotation.
The granularity of the magnetic-particle is that -0.125mm granule contents are not less than 80%, and dosage is 10~20kg/ when mixing
The quality of t, i.e., 1 ton delivering dry coal slurry addition magnetic-particle are 10~20kg, and magnetic-particle, which utilizes, stirs magnetic in field of turbulent flow in agitator
Property particle and coal slime particle between the speed difference that moves, strengthen shearing and wiping of the magnetic-particle to the high grey difficult separation coal mud surface of microfine
It washes, promotes collecting agent in the absorption on coal grain surface.
The coal slime flotation collector is the kerosene or diesel oil of routine, and the dosage that flotation collector is added into agitator is
The quality of 0.8~1.5kg/t, i.e., 1 ton delivering dry coal slurry addition collecting agent are 0.8~1.5kg, and 3min is stirred after addition.
The floatation frother is terpenic oil, and dosage is 0.4~0.8kg/t, i.e., the quality of 1 ton delivering dry coal slurry addition foaming agent
For 0.4~0.8kg, 1min is stirred.
The magnetic field intensity of the magnet separator magnetic pole surface is between 120~380kA/m.
Advantageous effect：By adding magnetic-particle in coal slurry whipping process, using stirring field of turbulent flow in magnetic-particle and
The speed difference moved between coal particle strengthens shearing and scouring of the magnetic-particle to the high grey difficult separation coal surface of microfine, promotes collecting
Agent strengthens the surface nature difference of the high grey minerals of the shales such as coal and spoil, improves the hydrophobicity of coal in the absorption on coal grain surface
And floatability, the flotation effect of the high grey difficult separation coal of enhancing microfine.
Description of the drawings
Fig. 1 is the method block diagram of the present invention sized mixing based on magnetic-particle intensified Daqu.
Specific implementation mode
With reference to the present embodiment, the invention will be further described：
As shown in Figure 1, the method for the present invention sized mixing based on magnetic-particle intensified Daqu, step are：
Mass concentration will be diluted with water into delivering dry coal slurry first, agitator is added after the coal slurry between 8%~12%,
Secondly agitator being added in magnetic-particle and flotation collector and starts to be mixed, the granularity of the magnetic-particle is-
0.125mm granule contents are not less than 80%, and dosage is 10~20kg/t when mixing, i.e., the matter of 1 ton delivering dry coal slurry addition magnetic-particle
Amount is 10~20kg, and magnetic-particle utilizes the speed moved between magnetic-particle and coal slime particle in stirring field of turbulent flow in agitator
Difference strengthens shearing and scouring of the magnetic-particle to the high grey difficult separation coal mud surface of microfine, promotes collecting agent in the suction on coal grain surface
Attached, the coal slime flotation collector is conventional kerosene or diesel oil, the dosage that flotation collector is added into agitator is 0.8~
The quality of 1.5kg/t, i.e., 1 ton delivering dry coal slurry addition collecting agent are 0.8~1.5kg, stir 3min after addition, continue into agitator
Floatation frother is added and continues to stir, the floatation frother is terpenic oil, and dosage is 0.4~0.8kg/t, i.e. 1 ton of dry coal
The quality that mud adds foaming agent is 0.4~0.8kg, stirs 1min, and the coal slurry after stirring is overflowed by agitator overflow port, will
Coal slurry feeds magnetic separator after the stirring of spilling, and the magnetic-particle in coal slurry, the magnetism of magnetic separator recycling are recycled using magnetic separator
Grain, which continuously adds in agitator, to be recycled, and the tailing of magnetic separator is then included into follow-up floatation equipment and carries out flotation.The magnetic separator
The magnetic field intensity of magnetic pole surfaces is between 120~380kA/m.
Claims (5)
1. a kind of method sized mixing based on magnetic-particle intensified Daqu, it is characterised in that step is：
Mass concentration will be diluted with water into delivering dry coal slurry first, agitator is added after the coal slurry between 8%~12%, secondly
Agitator is added in magnetic-particle and flotation collector and starts to be mixed, continues that floatation frother is added simultaneously into agitator
Continue to stir, the coal slurry after stirring is overflowed by agitator overflow port, and coal slurry after the stirring of spilling is fed magnetic separator, is utilized
Magnetic separator recycles the magnetic-particle in coal slurry, and the magnetic-particle of magnetic separator recycling, which continuously adds in agitator, to be recycled, magnetic separation
The tailing of machine is then included into follow-up floatation equipment and carries out flotation.
2. the method according to claim 1 sized mixing based on magnetic-particle intensified Daqu, it is characterised in that：The magnetism
The granularity of particle is that -0.125 mm granule contents are not less than 80%, and dosage is 10~20 kg/t, i.e. 1 ton of delivering dry coal slurry when mixing
The quality for adding magnetic-particle is 10~20 kg, and magnetic-particle, which utilizes, stirs magnetic-particle and coal slime in field of turbulent flow in agitator
The speed difference moved between particle strengthens shearing and scouring of the magnetic-particle to the high grey difficult separation coal mud surface of microfine, promotes collecting
Absorption of the agent on coal grain surface.
3. the method according to claim 1 sized mixing based on magnetic-particle intensified Daqu, it is characterised in that：The coal slime
Flotation collector is the kerosene or diesel oil of routine, and the dosage that flotation collector is added into agitator is 0.8~1.5 kg/t, i.e.,
The quality of 1 ton of delivering dry coal slurry addition collecting agent is 0.8~1.5 kg, and 3 min are stirred after addition.
4. the method according to claim 1 sized mixing based on magnetic-particle intensified Daqu, it is characterised in that：The flotation
Foaming agent is terpenic oil, and dosage is 0.4~0.8 kg/t, i.e., the quality of 1 ton delivering dry coal slurry addition foaming agent is 0.4~0.8 kg,
Stir 1 min.
5. the method according to claim 1 sized mixing based on magnetic-particle intensified Daqu, it is characterised in that：The magnetic separation
The magnetic field intensity of machine magnetic pole surfaces is between 120~380 kA/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266011.2A CN108480056B (en) | 2018-03-28 | 2018-03-28 | Magnetic particle-based enhanced flotation size mixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266011.2A CN108480056B (en) | 2018-03-28 | 2018-03-28 | Magnetic particle-based enhanced flotation size mixing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108480056A true CN108480056A (en) | 2018-09-04 |
| CN108480056B CN108480056B (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810266011.2A Active CN108480056B (en) | 2018-03-28 | 2018-03-28 | Magnetic particle-based enhanced flotation size mixing method |
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| Country | Link |
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| CN (1) | CN108480056B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078761A (en) * | 2018-09-27 | 2018-12-25 | 江西理工大学 | A method of utilizing the difficult nickel sulfide ore flotation of magnetic hydrophobic particle strengthening |
| CN109078760A (en) * | 2018-09-27 | 2018-12-25 | 江西理工大学 | The method for improving microfine copper-sulphide ores flotation recovery rate with carrying magnetic hydrophobic granule |
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|---|---|---|---|---|
| CN201394437Y (en) * | 2009-03-20 | 2010-02-03 | 中国矿业大学 | Compulsory mixed size mixing device |
| CN201399339Y (en) * | 2009-05-18 | 2010-02-10 | 天津工业大学 | Device for isolating magnetic stirrer and catalyst |
| US8684592B2 (en) * | 2011-02-25 | 2014-04-01 | Algenol Biofuels Inc. | Magnetically coupled system for mixing |
| CN103752414A (en) * | 2014-01-07 | 2014-04-30 | 中国矿业大学(北京) | Pulp mixing reinforced deep flotation technology process |
| CN105127002A (en) * | 2015-07-17 | 2015-12-09 | 中国矿业大学 | Floating technology for effectively reducing pollution of high ash content slime in clean coal |
| CN206199495U (en) * | 2016-09-29 | 2017-05-31 | 武汉理工大学 | Electrolytic floatage device |
-
2018
- 2018-03-28 CN CN201810266011.2A patent/CN108480056B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201394437Y (en) * | 2009-03-20 | 2010-02-03 | 中国矿业大学 | Compulsory mixed size mixing device |
| CN201399339Y (en) * | 2009-05-18 | 2010-02-10 | 天津工业大学 | Device for isolating magnetic stirrer and catalyst |
| US8684592B2 (en) * | 2011-02-25 | 2014-04-01 | Algenol Biofuels Inc. | Magnetically coupled system for mixing |
| CN103752414A (en) * | 2014-01-07 | 2014-04-30 | 中国矿业大学(北京) | Pulp mixing reinforced deep flotation technology process |
| CN105127002A (en) * | 2015-07-17 | 2015-12-09 | 中国矿业大学 | Floating technology for effectively reducing pollution of high ash content slime in clean coal |
| CN206199495U (en) * | 2016-09-29 | 2017-05-31 | 武汉理工大学 | Electrolytic floatage device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078761A (en) * | 2018-09-27 | 2018-12-25 | 江西理工大学 | A method of utilizing the difficult nickel sulfide ore flotation of magnetic hydrophobic particle strengthening |
| CN109078760A (en) * | 2018-09-27 | 2018-12-25 | 江西理工大学 | The method for improving microfine copper-sulphide ores flotation recovery rate with carrying magnetic hydrophobic granule |
| CN109078761B (en) * | 2018-09-27 | 2020-11-27 | 江西理工大学 | Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles |
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| CN108480056B (en) | 2020-03-10 |
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