CN106179713A - One exempts from desliming dual medium cyclone dressing technique - Google Patents
One exempts from desliming dual medium cyclone dressing technique Download PDFInfo
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- CN106179713A CN106179713A CN201610570674.4A CN201610570674A CN106179713A CN 106179713 A CN106179713 A CN 106179713A CN 201610570674 A CN201610570674 A CN 201610570674A CN 106179713 A CN106179713 A CN 106179713A
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- coal
- cyclone
- smalls
- spoil
- dehydration
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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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Cyclones (AREA)
Abstract
The invention discloses one and exempt from desliming dual medium cyclone dressing technique, it includes that (1) raw coal is pulverized；(2) raw coal after pulverizing adds cyclone and sorts, and the separating medium in described cyclone is the suspension of magnetite powder and water, obtains cleaned coal, smalls, middle coal and spoil after the raw coal separation after pulverizing；(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected；After smalls after de-mediated dehydration is carried out second dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；Transport to coal yard after middle coal and spoil de-mediated dehydration.The invention have the benefit that the present invention realizes sorting by parameters such as the pressure of precisely controlling system, density, magnetic material contents, sharpness of separation is high, and mismatch rate is extremely low, it is achieved that the higher degree of each product, significantly reduce the calorific value of gangue and coal slime, and improve the productivity of cleaned coal.
Description
Technical field
The present invention relates to Coal Washing Techniques field, specifically one and exempt from desliming dual medium cyclone dressing technique.
Background technology
Employing jigging sorts, and realizes sorting by fuzzy control, and shortcoming is that sharpness of separation is poor, each unstable product quality；
Mismatch rate is high, causes clean coal yield low and cleaned coal caloric value is low, and side-product (containing coal slime) the band big caloric value of coal amount is higher.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, it is provided that one exempts from desliming dual medium cyclone dressing technique, solve existing
There is sorting process sharpness of separation poor, each unstable product quality；Mismatch rate is high, causes clean coal yield low and cleaned coal caloric value is low,
The problem that the side-product band big caloric value of coal amount is higher.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
One exempts from desliming dual medium cyclone dressing technique, it is characterised in that step is as follows:
(1) raw coal is pulverized；
(2) adding cyclone to sort, the separating medium in described cyclone is the suspension of magnetite powder and water, institute
The weight ratio stating magnetite powder and water is (1.14-1.17): (0.95-1)；In described cyclone, pressure is 0.11-0.14MPa；
Cleaned coal, smalls, middle coal and spoil is obtained after raw coal separation after pulverizing；
(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected, the smalls after de-mediated being dehydrated enters
After row second dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；After middle coal and spoil de-mediated dehydration, transport is to storage
Coal yard.
Further, described dense medium cyclone is three-product HM cyclone.
Further, raw coal is through 20mm classifying screen classification；The particle diameter raw coal more than 20mm is crushed to particle diameter be less than
It is mixed together with the raw coal crossing 20mm classifying screen after 20mm.
Compared with prior art, the invention has the beneficial effects as follows: the present invention by the pressure of precisely controlling system, density,
The parameters such as magnetic material content realize sorting, and sharpness of separation is high, and mismatch rate is extremely low, it is achieved that the higher degree of each product, effectively
Reduce the calorific value of gangue and coal slime, and improve the productivity of cleaned coal.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.Embodiments of the present invention include but not limited to following
Embodiment.
[embodiment 1]
One exempts from desliming dual medium cyclone dressing technique, and step is as follows:
(1) raw coal is pulverized, and raw coal is through 20mm classifying screen classification；The particle diameter raw coal more than 20mm is crushed to particle diameter be less than
It is mixed together with the raw coal crossing 20mm classifying screen after 20mm；
(2) adding cyclone to sort, described dense medium cyclone is three-product HM cyclone；In described cyclone
Separating medium is the suspension of magnetite powder and water, and described magnetite powder is 1.14:1 with the weight ratio of water, in described cyclone
Pressure is 0.11MPa；Cleaned coal, smalls, middle coal and spoil is obtained after raw coal separation after pulverizing；
(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected；Smalls after de-mediated being dehydrated enters
After row second dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；After middle coal and spoil de-mediated dehydration, transport is to storage
Coal yard.
[embodiment 2]
One exempts from desliming dual medium cyclone dressing technique, and step is as follows:
(1) raw coal is pulverized, and raw coal is through 20mm classifying screen classification；The particle diameter raw coal more than 20mm is crushed to particle diameter be less than
It is mixed together with the raw coal crossing 20mm classifying screen after 20mm；
(2) adding cyclone to sort, described dense medium cyclone is three-product HM cyclone；In described cyclone
Separating medium is the suspension of magnetite powder and water, and described magnetite powder is 1.17:0.95 with the weight ratio of water, described cyclone
Interior pressure is 0.11MPa；Cleaned coal, smalls, middle coal and spoil is obtained after raw coal separation after pulverizing；
(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected；Smalls after de-mediated being dehydrated enters
After row second dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；After middle coal and spoil de-mediated dehydration, transport is to storage
Coal yard.
[embodiment 3]
One exempts from desliming dual medium cyclone dressing technique, and step is as follows:
(1) raw coal is pulverized, and raw coal is through 20mm classifying screen classification；The particle diameter raw coal more than 20mm is crushed to particle diameter be less than
It is mixed together with the raw coal crossing 20mm classifying screen after 20mm；
(2) adding cyclone to sort, described dense medium cyclone is three-product HM cyclone；In described cyclone
Separating medium is the suspension of magnetite powder and water, and described magnetite powder is 1.15:0.97 with the weight ratio of water；Described cyclone
Interior pressure is 0.13MPa；Cleaned coal, smalls, middle coal and spoil is obtained after raw coal separation after pulverizing；
(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected；Smalls after de-mediated being dehydrated enters
After row second dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；After middle coal and spoil de-mediated dehydration, transport is to storage
Coal yard.
It is embodiments of the invention as mentioned above.The present invention is not limited to above-mentioned embodiment, and anyone should learn
The structure change made under the enlightenment of the present invention, every have same or like technical scheme with the present invention, each falls within this
Within the protection domain of invention.
Claims (3)
1. exempt from desliming dual medium cyclone dressing technique for one kind, it is characterised in that step is as follows:
(1) raw coal is pulverized；
(2) adding cyclone to sort, the separating medium in described cyclone is the suspension of magnetite powder and water, described magnetic
Iron Ore Powder is (1.14-1.17) with the weight ratio of water: (0.95-1)；In described cyclone, pressure is 0.11-0.14MPa；Pulverize
After raw coal separation after obtain cleaned coal, smalls, middle coal and spoil；
(3) cleaned coal, smalls, middle coal and spoil de-mediated dehydration step (2) sub-elected；Smalls after de-mediated being dehydrated carries out two
After secondary dehydration, the cleaned coal with de-mediated dehydration is mixed to form final head coal product；Transport to coal storage after middle coal and spoil de-mediated dehydration
?.
One the most according to claim 1 exempts from desliming dual medium cyclone dressing technique, it is characterised in that: described dense medium eddy flow
Device is three-product HM cyclone.
One the most according to claim 1 exempts from desliming dual medium cyclone dressing technique, it is characterised in that: raw coal is through 20mm
Classifying screen classification；The particle diameter raw coal more than 20mm is crushed to particle diameter mix together with crossing the raw coal of 20mm classifying screen less than after 20mm
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570674.4A CN106179713A (en) | 2016-07-19 | 2016-07-19 | One exempts from desliming dual medium cyclone dressing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570674.4A CN106179713A (en) | 2016-07-19 | 2016-07-19 | One exempts from desliming dual medium cyclone dressing technique |
Publications (1)
| Publication Number | Publication Date |
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| CN106179713A true CN106179713A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610570674.4A Pending CN106179713A (en) | 2016-07-19 | 2016-07-19 | One exempts from desliming dual medium cyclone dressing technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118002300A (en) * | 2024-04-08 | 2024-05-10 | 山西潞安环保能源开发股份有限公司 | Coal preparation device for pulverized coal processing |
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| US5314124A (en) * | 1987-11-30 | 1994-05-24 | Genesis Research Corporation | Coal cleaning process |
| CN1485148A (en) * | 2002-09-24 | 2004-03-31 | 太西集团有限责任公司太西洗煤厂 | Smokeless ultralow ash content pure coal and the production technology thereof |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102179288A (en) * | 2010-12-21 | 2011-09-14 | 王万明 | Coal-reselecting process for heavy media coal separation |
| CN102861663A (en) * | 2012-10-08 | 2013-01-09 | 中国矿业大学 | Breaking grinding dissociation and re-flotation two-stage recovery process of coal in scarce coking |
| CN103203280A (en) * | 2012-06-20 | 2013-07-17 | 冯云 | Dense-medium preparation technology for optimizing coal slime |
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| US5314124A (en) * | 1987-11-30 | 1994-05-24 | Genesis Research Corporation | Coal cleaning process |
| CN1485148A (en) * | 2002-09-24 | 2004-03-31 | 太西集团有限责任公司太西洗煤厂 | Smokeless ultralow ash content pure coal and the production technology thereof |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102179288A (en) * | 2010-12-21 | 2011-09-14 | 王万明 | Coal-reselecting process for heavy media coal separation |
| CN103203280A (en) * | 2012-06-20 | 2013-07-17 | 冯云 | Dense-medium preparation technology for optimizing coal slime |
| CN102861663A (en) * | 2012-10-08 | 2013-01-09 | 中国矿业大学 | Breaking grinding dissociation and re-flotation two-stage recovery process of coal in scarce coking |
| CN103350027A (en) * | 2013-08-06 | 2013-10-16 | 煤炭科学研究总院唐山研究院 | Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118002300A (en) * | 2024-04-08 | 2024-05-10 | 山西潞安环保能源开发股份有限公司 | Coal preparation device for pulverized coal processing |
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Application publication date: 20161207 |
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