CN109201344A - Compound the low-order coal coal slime flotation collector and its preparation method and application of keto-aldehyde ether - Google Patents
Compound the low-order coal coal slime flotation collector and its preparation method and application of keto-aldehyde ether Download PDFInfo
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- CN109201344A CN109201344A CN201810952933.9A CN201810952933A CN109201344A CN 109201344 A CN109201344 A CN 109201344A CN 201810952933 A CN201810952933 A CN 201810952933A CN 109201344 A CN109201344 A CN 109201344A
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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
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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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
- B03D2203/08—Coal ores, fly ash or soot
Abstract
The present invention provides a kind of low-order coal coal slime flotation collector and its preparation method and application for compounding keto-aldehyde ether, the collecting agent has composition simple, it can be used as the economical and efficient sorting that low-order coal coal slime flotation collector completes conventional flotation, have the characteristics that reagent consumption is small, flotation is at low cost, the efficiency of separation is high.The low-order coal coal slime flotation collector of compounding keto-aldehyde ether provided by the invention, each component including following mass percent: C10‑C16Hydrocarbon-type oil 60-85%；C5‑C10Ketone 5-15%；C5‑C9Aldehyde 5-15%；C4‑C10Ether 5-15%.
Description
Technical field
The present invention relates to coal slime flotation technical fields, and in particular to a kind of low-order coal coal slime flotation collector and its preparation side
Method and application.
Background technique
Low-order coal is the lower coal of degree of metamorphism, includes mainly lignite, jet coal, weakly caking coal, dross coal etc., accounts for China
50% or more coal reserves.Wherein -0.5mm Bed for Fine Coal is known as low-order coal coal slime, poor, fine size, specific surface area with hydrophobicity
The outstanding features such as big.Widest method of the flotation as graded shot mineral can effectively realize the drop ash upgrading of fine slime,
Improve its utility value.But conventional collecting agent (such as diesel oil, kerosene) for there are the medicine consumptions high, flotation of low-order coal coal slime flotation at
The problems such as this is high causes low order coal slime to be difficult to realize economy, efficient separation.Therefore largely without the low-order coal coal of sorting upgrading
Mud selection incorporation fine cleaned coal is sorted, and results in the decline of thermal coal product quality, Air-pollution From Combustion is serious；And for high in part
Grey low order coal slime (ash content > 40%), is dropped since utility value is extremely low to spoil, and there is spontaneous combustions and fugitive dust to endanger.It is low
Rank coal coal slime causes coal slime outlet unsmooth, becomes and restrict coal in China cleaning due to lacking the grey upgrading means of economical and effective drop
The critical issue efficiently utilized.
For low-order coal coal slime since surface oxygen functional group is more, the hydration shell for forming its surface is thicker, and conventional collecting agent is difficult
To significantly improve its surface hydrophobic in surface spreading, generally require to increase collector dosage to improve its rate of recovery.Flotation point
From in, when using diesel oil as collecting agent, for ton coal slime consumption in 8kg/t or more, some is even as high as 50kg/t, expensive medicament at
Originally making low order coal flotation have no economy can say.The present inventor it is proposed that a kind of coal advanced purification system and method (specially
Benefit number: ZL201110195118.0), by unconventional flotation technology --- oil vacuole flotation is used for low-order coal slime separation, successfully
Low medicine consumption sorting low-order coal coal slime is accomplished.This method is because there are medicaments to heat link, there are certain security risk, makes its hardly possible
To promote and apply.Therefore high, at high cost for low-order coal coal slime flotation conventional dose medicine consumption, unconventional method for floating operability is poor
Status, develop the special efficient medicament suitable for conventional flotation according to low-order coal Slime Characteristics, not only contribute to realize me
State's thermal coal coal slime flotation upgrading and coal resources high-efficiency cleaning utilize, while looking forward to economic effect to reducing pollution that caused by coal burning, improving coal
It can be significant.
Application No. is 201710067078 patents to disclose a kind of low-order coal coal slime flotation collector and its application, catches
Receiving agent includes hydrocarbon-type oil and promotor, hydrocarbon-type oil C10-C16Hydrocarbon-type oil 60-75%；The promotor is C6-C8Sour 8-15%,
C10-C18Ester 4-8%, C5-C7Ketone 6-12% and C5-C9Aldehyde 7-13%.The collecting agent is used for low-order coal coal slime flotation, reagent consumption
Small, flotation is at low cost, and the efficiency of separation is high.But it still remains the deficiencies of more component, complicated component, causes ore-dressing practice waste water
Complicated component, poisonous and harmful element increase, and not only cause industry cost to improve, also easily endanger ecological environment.
Summary of the invention
In view of this, the present invention provides a kind of low-order coal coal slime flotation collector for compounding keto-aldehyde ether, which has
Composition is simple, and the economical and efficient that can be used as low-order coal coal slime flotation collector completion conventional flotation sorts, small with reagent consumption,
The features such as flotation is at low cost, the efficiency of separation is high.
The present invention be reach its purpose, the technical solution adopted is as follows:
First aspect present invention provides a kind of low-order coal coal slime flotation collector for compounding keto-aldehyde ether, including following quality hundred
Divide each component of ratio:
C10-C16Hydrocarbon-type oil 60-85%；
C5-C10Ketone 5-15%；
C5-C9Aldehyde 5-15%；
C4-C10Ether 5-15%.
Collecting agent of the invention, it is only necessary to add C10-C16Hydrocarbon-type oil, C5-C10Ketone, C5-C9Aldehyde and C4-C10Ether, component is simple,
And can be suitably used for the low-order coal coal slime flotation of conventional flotation method, it not only avoids in floatation process because of collecting agent complicated components
The drawbacks such as waste component caused by and is complicated and poisonous and harmful element is more, conducive to the harm reduced to ecological environment, and reduce
Cost.The present invention uses the simple collecting agent of this ingredient simultaneously, can reach excellent in less reagent consumption and float
Select effect.
In preferred some embodiments, low-order coal coal slime flotation collector of the invention includes following mass percent
Each component: C10-C16Hydrocarbon-type oil 70-80%, such as 70%, 73%, 75%, 78%, 80% etc., preferably 74-80%；C5-C10Ketone
7-12%, for example, 7%, 10%, 12%,；C5-C9Aldehyde 5-8%, such as 5%, 6%, 8% etc.；C4-C10Ether 8-10%, such as
8%, 9%, 10% etc..Using the collecting agent of optimum ratio, when being used for flotation low-order coal coal slime, under lower dosing,
The yield of gained flotation concentrate is high, reaches 60% or more, even up to 70-80%, the combustible recovery of concentrate is high, reachable
83% or more, even up to 85-95%.
In preferred some embodiments, low-order coal coal slime flotation collector of the invention includes following mass percent
Each component: the C10-C16Hydrocarbon-type oil accounts for 70%, the C5-C10Ketone accounts for 12%, the C5-C9Aldehyde accounts for 8%, the C4-C10Ether accounts for
10%；
In preferred some embodiments, the collecting agent includes each component of following mass percent: the C10-C16
Hydrocarbon-type oil accounts for 80%, the C5-C10Ketone accounts for 7%, the C5-C9Aldehyde accounts for 5%, the C4-C10Ether accounts for 8%；
In preferred some embodiments, the collecting agent includes each component of following mass percent: the C10-C16
Hydrocarbon-type oil accounts for 75%, the C5-C10Ketone accounts for 10%, the C5-C9Aldehyde accounts for 7%, the C4-C10Ether accounts for 8%.
C10-C16Hydrocarbon-type oil for example can be C10、C11、C12、C13、C14、C15、C16Hydrocarbon-type oil etc., it is preferred that the hydro carbons
Oil is selected from least one of diesel oil or kerosene.
C5-C10Ketone for example can be C5、C6、C7、C8、C9、C10Ketone etc., it is preferred that the ketone include diisobutyl ketone and its
At least one of homologue.
C5-C9Aldehyde for example can be C5、C6、C7、C8、C9Aldehyde etc., it is preferred that the aldehyde includes in valeraldehyde or its homologue
At least one, more preferably at least one of valeraldehyde, n-octaldehyde.
C4-C10Ether for example can be C4、C5、C6、C7、C8、C9、C10Ether etc., it is preferred that the ether includes n-amylether or it is same
It is at least one of object, more preferably includes at least one of n-amylether, octyl ether or n-butyl ether, more preferable n-amylether or just
At least one of butyl ether can improve flotation effect using preferred ether, improve the flammable body of flotation concentrate yield and concentrate
The rate of recovery.
More preferably, in collecting agent of the invention, the hydrocarbon-type oil is selected from diesel oil and/or kerosene, and the ketone is selected from two
At least one of isobutyl ketone and its homologue, the aldehyde are selected from least one of valeraldehyde, n-octaldehyde, and the ether is selected from
At least one of n-amylether or n-butyl ether.It is combined collecting agent obtained using these components, flotation effect can be improved, is dropped
Low medicine consumption improves the combustible recovery of flotation concentrate yield and concentrate.These more preferable components are according to C10-C16Hydrocarbon-type oil
70-80%, preferably 74-80%；C5-C10Ketone 7-12%；C5-C9Aldehyde 5-8%；C4-C10The proportions of ether 8-10%, can compared with
Superior flotation effect is obtained under low medicine consumption.The ton coal slime consumption of collecting agent can be 0.5-2.8kg/t.
Second aspect of the present invention provides a kind of preparation method of low-order coal coal slime flotation collector for compounding keto-aldehyde ether, including
Following steps:
After the hydrocarbon-type oil and ketone, aldehyde and ether are mixed, the collecting agent is obtained.Preferably, by hydrocarbon-type oil and ketone, aldehyde and
After ether mixing, collecting agent is obtained；Specifically, ketone, aldehyde and ether can be added in hydrocarbon-type oil, 15min or more is stirred, is preferably stirred
15-25min obtains the collecting agent.
Third aspect present invention provides the application of low-order coal coal slime flotation collector described above in coal dust flotation, this
The flotation collector of invention is used for low-order coal coal slime flotation, and reagent consumption is small, flotation is at low cost, and the efficiency of separation is high, economic benefit
Significantly, the yield of flotation concentrate reaches 60% or more, more can reach 70-80%, the combustible recovery of concentrate up to 83% with
On, it more can reach 85-95%.Specifically, flotation mainly includes the following steps: for coal slime to be configured to flotation pulp, thereto plus
Enter the collecting agent and foaming agent, feeds in floatation equipment and sorted after stirring, obtain flotation concentrate and flotation tailing；
Preferably, the concentration of the flotation pulp is 60-100g/L, such as 60g/L, 80g/L, 100g/L etc..Preferably,
The ton coal slime consumption of the collecting agent is 0.5-2.8kg/t, for example, 0.5kg/t, 1.5kg/t, 1.9kg/t, 2.0kg/t,
2.5kg/t, 2.8kg/t etc., more preferable 2.0-2.8kg/t have more preferably flotation effect, improve cleaned coal it is flammable mention the rate of recovery and
Clean coal yield.The ton coal slime consumption of foaming agent is 0.1-0.5kg/t, for example, 0.1kg/t, 0.2kg/t, 0.4kg/t, 0.5kg/
T etc..Preferably, the foaming agent is selected from least one of sec-octyl alcohol or fusel.
Low-order coal of the present invention refers to: the lower coal of degree of metamorphism, mainly include lignite, jet coal, weakly caking coal,
Dross coal etc..
Technical solution provided by the invention has the following beneficial effects:
The present invention a small amount of C of addition in conventional dose (non-polar hydrocarbon oil)4-C10Ethers organic matter makees promotor, with C5-
C10Ketone, C5-C9Aldehyde is combined together as promotor, can not only be acted on the oxygen-containing functional group on low-order coal coal slime surface, effectively be covered
Lid coal slime surface polar groups, significantly improve coal slime surface hydrophobic；Polarity oxygen-containing group is adsorbable to gas-liquid interface simultaneously, has
Help hydrocarbon-type oil and be adsorbed on bubble surface, formation is stablized, hydrophobicity is stronger " oil vacuole ".Change in coal grain and the dual of bubble surface
Property effect under, enhance low-order coal coal slime flotation mineralization process, enhance hydrophobicity coal grain and bubble adhesion probability, thus significantly
Flotation efficiency is improved, medicine consumption is reduced.Include C by using4-C10Ethers promotor and hydrocarbon-type oil match, and realize low-order coal coal
The surface of the peculiar surface oxygen functional group of mud and hole is modified, and has obtained practical Study of flotation verifying.
Of the invention catch is added by the method for floating of the simple flotation of tradition in flotation collector of the present invention in coal slime ore pulp
Agent is received, economical and efficient sorting can be completed after short time stirring in screening installation；Compared to existing low-order coal coal slime flotation collecting
Agent not only simplifies floatation process, while reducing production cost.
The consumption of medicine needed for collecting agent of the invention carries out low-order coal coal slime flotation is low, the efficiency of separation is high.Using medicine of the invention
Agent is as low-order coal coal slime flotation collector, and ton coal slime flotation reagent consumption is between 0.5-2.8kg/t, body recycling that flotation is flammable
Rate compounds collecting agent consumption up to 83% or more, better than existing low-order coal coal slime flotation, further reduced the medicament of flotation at
This.
Collecting agent medicament of the invention is from a wealth of sources, is easy to get.This medicament main component is hydrocarbon-type oil, is common in coal chemical industry pair
Product, it is cheap and from a wealth of sources, and the promotor added is common chemical products, trade market is mature, is fast easy to get.
Collecting agent of the invention can also solve promotor ingredient used in low-order coal coal slime flotation collector in the prior art
Complexity, the technical problems such as beneficiation wastewater processing cost height.
Specific embodiment
For a better understanding of the technical solution of the present invention, below with reference to the embodiment content that the present invention is further explained,
But the contents of the present invention are not limited only to following embodiment.
In following embodiments, the information of material therefor and equipment is as shown in table 1 below:
1 material of table or facility information table
Embodiment 1
Characteristics of coal slime: the coal sample derives from Shenhua Zhun Nengheidai ditch coal preparation plant high alumina jet coal, and ash is high in coal slime, pan feeding coal
Plaster point 37%.Coal sample size is thinner, and -0.074mm grade coal slime accounts for coal sample 60%.
Operating condition: 1.5L XFD type hanging trough flotator is used, the speed of mainshaft is 2000rpm.120g delivering dry coal slurry is weighed to fall
Enter to fill and be configured in the flotation cell of tap water flotation pulp (pulp density 80g/L), collecting agent is added and stirs 3min, is added
After infusion sec-octyl alcohol stirs 30s, it is passed through gas (aeration quantity 0.25m3/ h) after scrape bubble 3min, the foam scraped and slot bottom
Residue is floatation clean coal and floating tail-coal, filters, dries and weighs respectively, product combustible recovery is calculated.This
Invention medicament and the flotation comparing result of common collecting agent diesel oil are as shown in table 2.
Embodiment 1-1
In embodiment 1-1, as mass fraction, flotation collector proportion be diesel oil 70%, diisobutyl ketone 12%, positive penta
Aldehyde 8%, n-amylether 10%.Preparation process is as follows: by diesel oil, diisobutyl ketone, after valeraldehyde and n-amylether mix in proportion, with
The speed of 1000rpm stirs 15min, obtains the flotation collector.
Embodiment 1-2
Embodiment 1-2 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 60%, diisobutyl ketone
15%, valeraldehyde 10%, n-amylether 15%.
Embodiment 1-3
Embodiment 1-3 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 80%, diisobutyl ketone
7%, n-octaldehyde 5%, n-butyl ether 8%.
Embodiment 1-4
Embodiment 1-4 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 75%, diisobutyl ketone
10%, valeraldehyde 7%, n-butyl ether 8%.
Embodiment 1-5
Embodiment 1-5 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 75%, diisobutyl ketone
10%, valeraldehyde 7%, octyl ether 8%.
Embodiment 1-6
Embodiment 1-6 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 75%, diisobutyl ketone
10%, valeraldehyde 7%, ether 8%.
Embodiment 1-7
Embodiment 1-7 is similar with embodiment 1-1, and difference is only that, collecting agent proportion are as follows: diesel oil 75%, diisobutyl ketone
10%, valeraldehyde 7%, water 8%.
Wherein, ash content detection instrument is ash content Determination of Volatile Matter instrument, Xuzhou Wei Ke Science and Technology Ltd. of producer, model
CTM300。
Pan feeding coal slime ash content refers to flotation raw coal pan feeding dry basis ash content.
The flammable rate of recovery of cleaned coal is according to the regulation of " coal can flotation assessment method " (MT259-91), and calculation formula is such as
Under:
In formula: EcIt is floatation clean coal combustible recovery, %；rcIt is floatation clean coal yield, %；Ad,cIt is floatation clean coal butt
Ash content, %；Ad,fIt is floatation feed dry basis ash content, %.
2 embodiment of table, 1 collecting agent and ordinary diesel oil floatation indicators comparison (high alumina jet coal)
As shown in Table 2, in 2.0kg/t, cleaned coal combustible recovery reaches the present embodiment 1-1 collecting agent consumption
83.60%, cleans ash 13.85%, floatation indicators are substantially better than index when diesel consumption is 9kg/t, flammable body recycling
Rate 77.06%, cleans ash 15.37%.The present embodiment 1-1 collecting agent consumption in 2.0kg/t with the present embodiment 1-3 and 1-4
Collecting agent consumption flotation effect in 2.0kg/t is suitable.For the present embodiment 1-1 collecting agent consumption in 2.8kg/t, cleaned coal is flammable
The body rate of recovery is up to 90.38%, and cleans ash 14.78%, flotation effect is further promoted.Comparison is originally
Embodiment 1-4 and embodiment 1-5,1-6 and 1-7 have found that collecting agent prescription of the present invention uses C4-C10Ether can effectively change
Kind low-order coal coal slime flotation.
Embodiment 2:
Characteristics of coal slime: the coal sample derives from Shenmu County's weakly caking coal, pan feeding coal slime ash content 30%.- 0.074mm grade coal slime accounts for coal
Sample 65%.
Operating condition: 1.5L XFD type hanging trough flotator is used, the speed of mainshaft is 2000rpm.120g delivering dry coal slurry is weighed to fall
Enter to fill and be configured in the flotation cell of tap water flotation pulp (pulp density 80g/L), collecting agent is added and stirs 3min, is added
After infusion sec-octyl alcohol stirs 30s, it is passed through gas (aeration quantity 0.25m3/ h) after scrape bubble 3min, the foam scraped and slot bottom
Residue is floatation clean coal and floating tail-coal, filters, dries and weighs respectively, product combustible recovery is calculated.This
Invention medicament and the flotation comparing result of common collecting agent diesel oil are as shown in table 3.
Wherein, in embodiment 2, as mass fraction, flotation collector proportion be diesel oil 75%, diisobutyl ketone 10%,
N-octaldehyde 7%, n-butyl ether 8%.Preparation process is as follows: by diesel oil, diisobutyl ketone, n-octaldehyde and n-butyl ether mix in proportion
Afterwards, 25min is stirred with the speed of 1000rpm, obtains the flotation collector.
3 embodiment of table, 2 collecting agent and common collecting agent diesel oil floatation indicators comparison (Shenmu County's weakly caking coal)
As shown in Table 3, for 2 collecting agent consumption of embodiment in 2.0kg/t, cleaned coal combustible recovery is smart up to 92.47%
Coal ash is divided into 10.64%, and floatation indicators are substantially better than index when diesel consumption is 7.0kg/t, combustible recovery
83.82%, cleans ash 11.78%.In 0.5kg/t, cleaned coal combustible recovery reaches 2 collecting agent consumption of embodiment
84.47%, cleans ash 10.13%, when floatation indicators and diesel consumption are 7.0kg/t, effect is suitable.
Embodiment 3:
Characteristics of coal slime: from the eastern jet coal of mind, pan feeding coal slime ash content 13%, -0.074mm grade accounts for 70%.
Operating condition: 1.5L XFD type hanging trough flotator is used, the speed of mainshaft is 2000rpm.120g delivering dry coal slurry is weighed to fall
Enter to fill and be configured in the flotation cell of tap water flotation pulp (pulp density 80g/L), collecting agent is added and stirs 3min, is added
After infusion sec-octyl alcohol stirs 30s, it is passed through gas (aeration quantity 0.25m3/ h) after scrape bubble 3min, the foam scraped and slot bottom
Residue is floatation clean coal and floating tail-coal, filters, dries and weighs respectively, product combustible recovery is calculated.This
Invention medicament and the flotation comparing result of common collecting agent diesel oil are as shown in table 4.
Wherein, in embodiment 3, as mass fraction, flotation collector proportion be diesel oil 74%, diisobutyl ketone 10%,
N-octaldehyde 8%, n-butyl ether 8%.Preparation process is as follows: by diesel oil, diisobutyl ketone, n-octaldehyde and n-butyl ether mix in proportion
Afterwards, 20min is stirred with the speed of 1000rpm, obtains the flotation collector.
4 embodiment of table, 3 collecting agent and common collecting agent diesel oil floatation indicators comparison (mind east jet coal)
As shown in Table 4, for 3 collecting agent consumption of embodiment in 2.0kg/t, cleaned coal combustible recovery is smart up to 85.40%
Coal ash is divided into 4.21%, and floatation indicators are substantially better than index when diesel consumption is 10.0kg/t, combustible recovery 72.87%,
Cleans ash 5.74%.Medicament of the present invention may be implemented in the efficient separation of low-order coal coal slime under low consumption amount.
In conclusion collecting agent flotation efficiency of the present invention is high, it is high, at high cost to solve existing medicament medicine consumption, very
The problem for advising method for floating operability difference, reduces costs simultaneously, looks forward to economic efficacy meaning weight to reducing pollution that caused by coal burning, improving coal
Greatly, it is with a wide range of applications.
It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or
Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.
Claims (10)
1. a kind of low-order coal coal slime flotation collector for compounding keto-aldehyde ether, which is characterized in that including each of following mass percent
Component:
C10-C16Hydrocarbon-type oil 60-85%；
C5-C10Ketone 5-15%；
C5-C9Aldehyde 5-15%；
C4-C10Ether 5-15%.
2. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1, which is characterized in that including as follows
The each component of mass percent:
C10-C16Hydrocarbon-type oil 70-80%, preferably 74-80%；
C5-C10Ketone 7-12%；
C5-C9Aldehyde 5-8%；
C4-C10Ether 8-10%.
3. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1 or 2, which is characterized in that
The collecting agent includes each component of following mass percent: the C10-C16Hydrocarbon-type oil accounts for 70%, the C5-C10Ketone accounts for
12%, the C5-C9Aldehyde accounts for 8%, the C4-C10Ether accounts for 10%；
Alternatively, the collecting agent includes each component of following mass percent: the C10-C16Hydrocarbon-type oil accounts for 80%, the C5-C10
Ketone accounts for 7%, the C5-C9Aldehyde accounts for 5%, the C4-C10Ether accounts for 8%；
Alternatively, the collecting agent includes each component of following mass percent: the C10-C16Hydrocarbon-type oil accounts for 75%, the C5-C10
Ketone accounts for 10%, the C5-C9Aldehyde accounts for 7%, the C4-C10Ether accounts for 8%.
4. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1-3, which is characterized in that
The hydrocarbon-type oil is selected from diesel oil or kerosene.
5. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1-3, which is characterized in that
The ketone includes at least one of diisobutyl ketone and its homologue.
6. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1-3, which is characterized in that
The aldehyde includes at least one of valeraldehyde or its homologue, preferably at least one of valeraldehyde, n-octaldehyde.
7. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1-3, which is characterized in that
The ether includes at least one of n-amylether or its homologue, is preferably included in n-amylether, octyl ether or n-butyl ether at least
One kind, at least one of more preferable n-amylether or n-butyl ether.
8. the low-order coal coal slime flotation collector of compounding keto-aldehyde ether according to claim 1-7, which is characterized in that
The hydrocarbon-type oil is selected from diesel oil or kerosene, and the ketone is selected from least one of diisobutyl ketone and its homologue, the aldehyde choosing
From at least one of valeraldehyde, n-octaldehyde, the ether is selected from least one of n-amylether or n-butyl ether.
9. a kind of preparation method for the low-order coal coal slime flotation collector for compounding keto-aldehyde ether, which comprises the steps of:
After the hydrocarbon-type oil and ketone, aldehyde and ether are mixed, the collecting agent is obtained；
Preferably, ketone, aldehyde and ether are added in hydrocarbon-type oil, stirs 15min or more, preferably stirring 15-25min, obtains described catch
Receive agent.
10. the described in any item low-order coal coal slime flotation collectors of claim 1-8 or the described in any item preparations of claim 9
Application of the low-order coal coal slime flotation collector in coal dust flotation made from method, which comprises the steps of:
Coal slime is configured to flotation pulp, the collecting agent and foaming agent are added thereto, fed after stirring in floatation equipment into
Row sorting, obtains flotation concentrate and flotation tailing；
Preferably, the concentration of the flotation pulp is 60-100g/L；
Preferably, the ton coal slime consumption of the collecting agent is 0.5-2.8kg/t, and the ton coal slime consumption of foaming agent is 0.1-0.5kg/
t；
Preferably, the foaming agent is selected from least one of sec-octyl alcohol or fusel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952933.9A CN109201344B (en) | 2018-08-21 | 2018-08-21 | Low-rank coal slime flotation collecting agent compounded with ketone-aldehyde ether and preparation method and application thereof |
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