CN108906339A - A kind of Floatation of Removal Carbon method of flyash - Google Patents
A kind of Floatation of Removal Carbon method of flyash Download PDFInfo
- Publication number
- CN108906339A CN108906339A CN201811050822.5A CN201811050822A CN108906339A CN 108906339 A CN108906339 A CN 108906339A CN 201811050822 A CN201811050822 A CN 201811050822A CN 108906339 A CN108906339 A CN 108906339A
- Authority
- CN
- China
- Prior art keywords
- flotation
- added
- flyash
- ash
- dosage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000010881 fly ash Substances 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 16
- 238000005188 flotation Methods 0.000 claims abstract description 48
- 239000002956 ash Substances 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000003814 drug Substances 0.000 claims abstract description 13
- 239000004088 foaming agent Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000002283 diesel fuel Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000012141 concentrate Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000008399 tap water Substances 0.000 abstract 1
- 235000020679 tap water Nutrition 0.000 abstract 1
- 239000010883 coal ash Substances 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- -1 dosage 2kg/t Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000004884 grey matter Anatomy 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 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
- 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
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of floatation process methods of flyash, and the method steps are as follows：Flyash former ash is dry, then flyash former ash is added in flotation cell, tap water is added to size mixing, temperature is controlled under normal temperature environment, collecting agent light diesel fuel is added into ore pulp, stirring is sized mixing；Foaming agent is added, stirring carries out tertiary flotation using flotation device, separates uncompleted burned carbon and inanimate matter.Beneficial effects of the present invention：Compared with prior art, the present invention is after adjusting flotation flowsheet, under the conditions of substantially halving compared to common procedure floating agent dosage, tertiary flotation can be obtained by high loss of ignition essence carbon and low loss on ignition tail ash, a series of problems, such as use of medicament can be greatly reduced to save fund, effectively mitigate flotation waste water processing.FLOTATION SEPARATION suitable for loss on ignition compared with high fly-ash.
Description
Technical field
The present invention relates to a kind of Floatation of Removal Carbon methods of flyash, belong to coal flotation technology field.
Background technique
Flyash is a kind of industrial solid castoff of similar volcano grey matter of Hazards in Power Plant discharge, currently, firepower is sent out
Flyash nearly 400,000,000 t that electricity generates, and yield cumulative year after year, have the volume of cargo in storage of nearly 2,000,000,000 t at present.Flyash processing side
Method generally fills and as building materials processing, but cannot utilize directly as building materials, and the residual carbon in flyash can produce building materials
Raw adverse effect, therefore carbonization treatment need to be carried out to it.At present in flyash Floatation of Removal Carbon treatment process, because flyash is high
Product after temperature burning, so residual oxidation of coal is serious, carbon grain surface property is similar to oxidized coal, therefore in floatation process Chinese medicine
Agent dosage is excessive.It the use of light diesel fuel is generally collecting agent, dosage 2kg/t, foaming agent 2#Oil, dosage 2kg/t.
Summary of the invention
The technical problem to be solved by the present invention is to：A kind of Floatation of Removal Carbon method of flyash is provided, it is above-mentioned existing to solve
The problem of technology.
The technical scheme adopted by the invention is as follows：A kind of Floatation of Removal Carbon method of flyash, this approach includes the following steps
（1）Flyash former ash is dried into 2h at a temperature of 105 °, then flyash former ash is added in 1L flotation cell, is added originally
Water solid concentration into ore pulp is 300g/L, and size mixing 0.5-1min under the conditions of revolving speed 1750-1950min/r, and control temperature exists
Under normal temperature environment, collecting agent is added into ore pulp, stirs the 0.5-1min that sizes mixing, foaming agent is added, stirs 0.5-1min；
（2）Flotation carries out flotation by flotation device, separates carbon granules and inanimate matter, two productions are obtained after a FLOTATION SEPARATION
Product, i.e., once sorting concentrate and primary cleaning tail are grey；
（3）Primary sorting tail ash is sorted again, operates same step by secondary flotation（1）, but medicament halves, and obtains after sorted
To chats A and tail ash products；
（4）It sorting three times, primary sorting concentrate is selected again, any medicament is not added in this process, it is directly sorted after sizing mixing,
Obtain chats B and concentrate product.
Step（1）Middle collecting agent uses light diesel fuel, and dosage is 0.8-1.2kg/t with respect to the dosage of raw ore, and foaming agent uses
2#Oil, dosage are 0.8-1.2kg/t with respect to the dosage of raw ore.
Beneficial effects of the present invention：Compared with prior art, the present invention is after adjusting flotation flowsheet, compared to common procedure
Under the conditions of floating agent dosage substantially halves, tertiary flotation can be obtained by high loss of ignition essence carbon and low loss on ignition tail ash, can
A series of problems, such as use of medicament is greatly reduced to save fund, effectively mitigates flotation waste water processing.
Detailed description of the invention
Fig. 1 is the flow chart of coal ash flotation process of the invention.
Specific embodiment
The present invention is described further below with reference to specific embodiment.
Embodiment 1：A kind of Floatation of Removal Carbon method of flyash, this approach includes the following steps
（1）Flyash former ash is dried into 2h at a temperature of 105 °, then flyash former ash is added in 1L flotation cell, is added originally
Water solid concentration into ore pulp is 300g/L, and size mixing 0.75min under the conditions of revolving speed 1850min/r, controls temperature in room temperature ring
Under border, collecting agent is added into ore pulp, stirs the 0.75min that sizes mixing, foaming agent is added, stirs 0.75min, collecting agent uses light bavin
Oil, dosage are 1kg/t with respect to the dosage of raw ore, and foaming agent uses 2#Oil, dosage are 1kg/t with respect to the dosage of raw ore；
（2）Flotation carries out flotation by flotation device, separates carbon granules and inanimate matter, two productions are obtained after a FLOTATION SEPARATION
Product, i.e., once sorting concentrate and primary cleaning tail are grey；
（3）Primary sorting tail ash is sorted again, operates same step by secondary flotation（1）, but medicament halves, and obtains after sorted
To chats A and tail ash products；
（4）It sorting three times, primary sorting concentrate is selected again, any medicament is not added in this process, it is directly sorted after sizing mixing,
Obtain chats B and concentrate product.
It is all 0.8kg/t in collecting agent and frother dosages in the present embodiment, obtaining four kinds of product yields is respectively：Essence
Mine is 13.48%, chats A is 15.64%, chats B is 11.75%, tail ash is 59.63%.Loss on ignition is respectively：Concentrate is
49.36%, chats A is 20.16%, chats B is 25.76%, tail ash is 9.31%.Method for floating products obtained therefrom loss on ignition of the invention
Qualification, yield is high, strong applicability, compares traditional coal ash flotation process, greatly reduces dosing, can effectively reduce production
Cost, and can effectively mitigate a series of problems, such as flotation waste water is handled.
Embodiment 2：A kind of Floatation of Removal Carbon method of flyash, this approach includes the following steps
（1）Flyash former ash is dried into 2h at a temperature of 105 °, then flyash former ash is added in 1L flotation cell, is added originally
Water solid concentration into ore pulp is 300g/L, and size mixing 0.5min under the conditions of revolving speed 1750min/r, controls temperature in normal temperature environment
Under, collecting agent is added into ore pulp, stirs the 0.5min that sizes mixing, foaming agent is added, stirs 0.5min, collecting agent uses light diesel fuel,
Dosage is 0.8kg/t with respect to the dosage of raw ore, and foaming agent uses 2#Oil, dosage are 0.8kg/t with respect to the dosage of raw ore；
（2）Flotation carries out flotation by flotation device, separates carbon granules and inanimate matter, two productions are obtained after a FLOTATION SEPARATION
Product, i.e., once sorting concentrate and primary cleaning tail are grey；
（3）Primary sorting tail ash is sorted again, operates same step by secondary flotation（1）, but medicament halves, and obtains after sorted
To chats A and tail ash products；
（4）It sorting three times, primary sorting concentrate is selected again, any medicament is not added in this process, it is directly sorted after sizing mixing,
Obtain chats B and concentrate product.
It is all 0.8kg/t in collecting agent and frother dosages in the present embodiment, obtaining four kinds of product yields is respectively：Essence
Mine is 13.18%, chats A is 15.84%, chats B is 11.05%, tail ash is 59.93%.Loss on ignition is respectively：Concentrate is
49.16%, chats A is 20.36%, chats B is 25.26%, tail ash is 9.01%.Method for floating products obtained therefrom loss on ignition of the invention
Qualification, yield is high, strong applicability, compares traditional coal ash flotation process, greatly reduces dosing, can effectively reduce production
Cost, and can effectively mitigate a series of problems, such as flotation waste water is handled.
Embodiment 3：A kind of Floatation of Removal Carbon method of flyash, this approach includes the following steps
（1）Flyash former ash is dried into 2h at a temperature of 105 °, then flyash former ash is added in 1L flotation cell, is added originally
Water solid concentration into ore pulp is 300g/L, and size mixing 1min under the conditions of revolving speed 1950min/r, controls temperature in normal temperature environment
Under, collecting agent is added into ore pulp, stirs the 1min that sizes mixing, foaming agent is added, stirs 1min, collecting agent uses light diesel fuel, dosage
The dosage of opposite raw ore is 1.2kg/t, and foaming agent uses 2#Oil, dosage are 1.2kg/t with respect to the dosage of raw ore；
（2）Flotation carries out flotation by flotation device, separates carbon granules and inanimate matter, two productions are obtained after a FLOTATION SEPARATION
Product, i.e., once sorting concentrate and primary cleaning tail are grey；
（3）Primary sorting tail ash is sorted again, operates same step by secondary flotation（1）, but medicament halves, and obtains after sorted
To chats A and tail ash products；
（4）It sorting three times, primary sorting concentrate is selected again, any medicament is not added in this process, it is directly sorted after sizing mixing,
Obtain chats B and concentrate product.
It is all 1kg/t in collecting agent and frother dosages in the present embodiment, obtaining four kinds of product yields is respectively：Concentrate
For 14.25%, chats A be 13.41%, chats B is 12.02%, tail ash is 60.33%.Loss on ignition is respectively：Concentrate be 49.79%,
Chats A is 21.81%, chats B is 27.58%, tail ash is 8.46%.Method for floating products obtained therefrom loss on ignition of the invention is qualified, produces
Rate is high, strong applicability, compares traditional coal ash flotation process, greatly reduces dosing, can effectively reduce production cost, and
A series of problems, such as flotation waste water processing can effectively be mitigated.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims lid.
Claims (2)
1. a kind of Floatation of Removal Carbon method of flyash, it is characterised in that：This approach includes the following steps：
（1）Flyash former ash is dried into 2h at a temperature of 105 °, then flyash former ash is added in 1L flotation cell, is added originally
Water solid concentration into ore pulp is 300g/L, and size mixing 0.5-1min under the conditions of revolving speed 1750-1950min/r, and control temperature exists
Under normal temperature environment, collecting agent is added into ore pulp, stirs the 0.5-1min that sizes mixing, foaming agent is added, stirs 0.5-1min；
（2）Flotation carries out flotation by flotation device, separates carbon granules and inanimate matter, two productions are obtained after a FLOTATION SEPARATION
Product, i.e., once sorting concentrate and primary cleaning tail are grey；
（3）Primary sorting tail ash is sorted again, operates same step by secondary flotation（1）, but medicament halves, and obtains after sorted
To chats A and tail ash products；
（4）It sorting three times, primary sorting concentrate is selected again, any medicament is not added in this process, it is directly sorted after sizing mixing,
Obtain chats B and concentrate product.
2. a kind of Floatation of Removal Carbon method of flyash according to claim 1, it is characterised in that：Step（1）Middle collecting agent
Using light diesel fuel, dosage is 0.8-1.2kg/t with respect to the dosage of raw ore, and foaming agent uses 2#Oil, dosage of the dosage with respect to raw ore
For 0.8-1.2kg/t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050822.5A CN108906339A (en) | 2018-09-10 | 2018-09-10 | A kind of Floatation of Removal Carbon method of flyash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050822.5A CN108906339A (en) | 2018-09-10 | 2018-09-10 | A kind of Floatation of Removal Carbon method of flyash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108906339A true CN108906339A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811050822.5A Pending CN108906339A (en) | 2018-09-10 | 2018-09-10 | A kind of Floatation of Removal Carbon method of flyash |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586622A (en) * | 2019-09-24 | 2019-12-20 | 新疆天业（集团）有限公司 | Method for comprehensively utilizing gasification furnace slag resources |
| CN110605182A (en) * | 2019-10-25 | 2019-12-24 | 福建三钢闽光股份有限公司 | Blast furnace cloth belt dedusting ash flotation reagent and application method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631546A (en) * | 2004-12-22 | 2005-06-29 | 北京科技大学 | Flotation column process for separating carbon residue in fly ash |
| WO2007072718A1 (en) * | 2005-12-22 | 2007-06-28 | Mitsui Engineering & Shipbuilding Co., Ltd. | Method for removal of unburned carbon in fly ash |
| CN106669978A (en) * | 2015-11-11 | 2017-05-17 | 神华集团有限责任公司 | Charcoal floating agent, application thereof, and flyash floating charcoal extracting method |
| CN107128930A (en) * | 2017-05-23 | 2017-09-05 | 中国科学院青海盐湖研究所 | The method of comprehensive utilization of flyash |
| CN107303539A (en) * | 2016-04-21 | 2017-10-31 | 张晓峰 | A kind of floatation process of coal gasification fine slag |
-
2018
- 2018-09-10 CN CN201811050822.5A patent/CN108906339A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631546A (en) * | 2004-12-22 | 2005-06-29 | 北京科技大学 | Flotation column process for separating carbon residue in fly ash |
| WO2007072718A1 (en) * | 2005-12-22 | 2007-06-28 | Mitsui Engineering & Shipbuilding Co., Ltd. | Method for removal of unburned carbon in fly ash |
| CN106669978A (en) * | 2015-11-11 | 2017-05-17 | 神华集团有限责任公司 | Charcoal floating agent, application thereof, and flyash floating charcoal extracting method |
| CN107303539A (en) * | 2016-04-21 | 2017-10-31 | 张晓峰 | A kind of floatation process of coal gasification fine slag |
| CN107128930A (en) * | 2017-05-23 | 2017-09-05 | 中国科学院青海盐湖研究所 | The method of comprehensive utilization of flyash |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586622A (en) * | 2019-09-24 | 2019-12-20 | 新疆天业（集团）有限公司 | Method for comprehensively utilizing gasification furnace slag resources |
| CN110605182A (en) * | 2019-10-25 | 2019-12-24 | 福建三钢闽光股份有限公司 | Blast furnace cloth belt dedusting ash flotation reagent and application method thereof |
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Application publication date: 20181130 |
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