CN106669978B - A kind of method that charcoal flotation agent and its application and flyash flotation mention charcoal - Google Patents
A kind of method that charcoal flotation agent and its application and flyash flotation mention charcoal Download PDFInfo
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Abstract
The present invention relates to a kind of charcoal flotation agent, the charcoal flotation agent contains oil base collecting agent, inhibitor, activator and foaming agent, wherein, the inhibitor is citric acid and/or oxalic acid, the activator is polyacrylics, the content of the oil base collecting agent is 50-80 parts by weight, the content of the inhibitor is 5-15 parts by weight, the content of the activator is 5-20 parts by weight, the content of the foaming agent is 5-15 parts by weight, it further relates to above-mentioned charcoal flotation agent and proposes application and a kind of method that flyash flotation mentions charcoal in charcoal in flyash flotation.After carrying out flotation to flyash or white clay using charcoal flotation agent of the invention, non- charcoal emersion rate reaches can be to 95% or more, and smart charcoal also has certain economic value after flotation, loss on ignition reaches 80% or more, can be used as the raw material of secondary fuel, rubber reinforcing filler, carbon black and active carbon preparation.
Description
Technical field
The present invention relates to flyash flotation fields, and in particular, to a kind of charcoal flotation agent and the charcoal flotation agent are in fine coal
Grey flotation proposes the method that application in charcoal and flyash flotation mention charcoal.
Background technique
After coal completely burned, combustible constituent combustion heat release amount in coal, moisture in coal evaporation, remainder is coal
Minerals, the minerals are the ash content that metal and nonmetallic oxide and salt are formed.China uses coal as its main energy source, every year
For steam coal for power up to more than 400,000,000 tons, the whole nation in 1997 generates flyash more than 100,000,000 tons, becomes the world's largest ash discharge state, causes
Serious environmental pollution simultaneously occupies a large amount of soil.
In addition, white clay is the residue of flyash acid extracting extraction alumina technology, complex chemical composition, predominantly dioxy
SiClx, aluminum oxide, titanium dioxide, calcium oxide and non-charcoal etc..According to statistics, flyash acid extracting extracts alumina technology
1 ton of aluminium oxide of every production will generate about 1.3 tons of white clays.Since white clay particle is thinner, complex chemical composition, loss will be to agriculture
The resources such as field, river, underground water cause serious pollution, and bulk deposition land occupation, also severely compromise the health of human body
And ecological environment.Therefore, how rationally to have become the key of flyash acid extracting extraction alumina technology using white clay, and
Improve the key of total utilization of PCA value.
Currently, the comprehensive utilization of white clay, also in the laboratory research stage, Main way concentrates on filler, construction material etc.
Industry.And the unburned carbon content of white clay is higher, will seriously affect the intensity of product, freeze-thaw resistance and impervious applied to construction material
Property.In order to meet requirement of the white clay in the engineer applications such as cement, concrete, silicate product, it is necessary to carry out de- charcoal to white clay
Processing.It has been investigated that non-charcoal is loose porous in white clay, surface hydrophobicity oleophylic utilizes carbon granule and other soot particle moistened surfaces
Property difference, can be selected froth flotation method carbon granule is sorted out from white clay.But since non-charcoal is through high-temp combustion, salt acidleach
The processes such as out, surface severe oxidation, increased hydrophilicity, flotation activity reduce, therefore, using unburned in froth flotation removing white clay
When carbon granule, flotation effect is bad, and the rate of recovery of charcoal is low.
About the research of flotation agent, patent application CN101357352A discloses a kind of flyash floating agent and its preparation
Method, the flyash floating agent contain 60-85 weight % non-polar oil (diesel oil, kerosene, motor oil or fuel oil), 5-20 weight
It measures % activating agent (aliphatic ester of oleic acid, vegetable oil or carbon chain length less than 18 carbon atoms) and 10-35 weight % foaming agent is (secondary
Octanol, fusel, GF oil), combustible component emersion rate in flyash can be made to reach 95% or more, still, the preparation of the flotation agent
Journey is more complex, and foam is unstable, and flotation agent consumption is larger.
Patent application CN104477906A discloses a kind of method that active carbon is extracted from flyash, specifically discloses:
After pine-seed oil, kerosene, diesel oil and starch are mixed, emulsifier is obtained, then emulsifier is uniformly mixed with syringyl alcohol, but it is floating
Effect and bad is selected, and the preparation process of flotation agent is also more complex.
Summary of the invention
The purpose of the invention is to overcome, charcoal flotation effect is poor in the prior art and charcoal flotation agent preparation process is more complex
Defect, provide that a kind of charcoal flotation agent and the charcoal flotation agent propose application in charcoal in flyash flotation and flyash flotation mentions
The method of charcoal.
The present inventor has found a kind of efficient charcoal flotation agent under study for action, contains oil base collecting agent, inhibitor, activation
Agent and foaming agent, wherein the inhibitor is citric acid and/or oxalic acid, and the activator is polyacrylics, the oil
The content of base collecting agent is 50-80 parts by weight, and the content of the inhibitor is 5-15 parts by weight, and the content of the activator is 5-
The content of 20 parts by weight, the foaming agent is 5-15 parts by weight, can significantly improve the flotation effect of charcoal flotation agent.
Therefore, to achieve the goals above, on the one hand, the present invention provides a kind of charcoal flotation agent, which contains
Oil base collecting agent, inhibitor, activator and foaming agent, wherein the inhibitor is citric acid and/or oxalic acid, the activator
For polyacrylics, the content of the oil base collecting agent is 50-80 parts by weight, and the content of the inhibitor is 5-15 weight
Part, the content of the activator is 5-20 parts by weight, and the content of the foaming agent is 5-15 parts by weight.
Second aspect, the present invention provides above-mentioned charcoal flotation agent to propose the application in charcoal in flyash flotation.
The third aspect, the present invention provides a kind of methods that flyash flotation mentions charcoal, this method comprises: (1) prepares white clay；
(2) roughing is carried out to white clay using above-mentioned charcoal flotation agent, obtains thick charcoal, wherein the dosage of charcoal flotation agent is preferably white clay weight
(100-1000)/1000000 of amount, particularly preferably (400-600)/1000000；Using the inhibitor in charcoal flotation agent to institute
It is selected to state thick charcoal progress, wherein the dosage of the inhibitor is preferably (50-150)/1000000 of thick charcoal weight, particularly preferably
It is 100/1000000.
The hydrophobicity and floatability of non-charcoal can be improved in charcoal flotation agent of the invention, while utilizing hydrogen bond force, electrostatic attraction
And the hydrophily of chemisorption enhancing siulica-alumina mineral, the effective dispersion for inhibiting siulica-alumina mineral floating and other ash contents,
To improve the settling property of flotation tail ash.It is unburned after carrying out flotation to flyash or white clay using charcoal flotation agent of the invention
Charcoal emersion rate up to can to 95% or more, and after flotation, smart charcoal also has certain economic value, loss on ignition reaches 80% or more, can
Raw material as the preparation of secondary fuel, rubber reinforcing filler, carbon black and active carbon.Therefore, it is carried out using charcoal flotation agent of the invention
Flyash or white clay flotation mention charcoal, not only can satisfy the requirement of building trade, but also the synthesis of flyash can be improved
Utility value also has biggish economic interests and social benefit in terms of rationally utilizing resource, improving environmental protection.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
On the one hand, the present invention provides a kind of charcoal flotation agent, which contains oil base collecting agent, inhibitor, activation
Agent and foaming agent, wherein the inhibitor is citric acid and/or oxalic acid, and the activator is polyacrylics, the oil
The content of base collecting agent is 50-80 parts by weight, and the content of the inhibitor is 5-15 parts by weight, and the content of the activator is 5-
20 parts by weight, the content of the foaming agent are 5-15 parts by weight.
Charcoal flotation agent according to the present invention, it is preferable that the content of the oil base collecting agent is 60-70 parts by weight, institute
The content for stating inhibitor is 7-10 parts by weight, and the content of the activator is 10-15 parts by weight, and the content of the foaming agent is 7-
10 parts by weight propose charcoal effect so as to significantly improve the flotation of charcoal flotation agent.
Charcoal flotation agent according to the present invention, as long as the activator is polyacrylics, to its performance
There is no particular limitation with specific type, such as the molecular weight of the polyacrylics can be 2000-500000, preferably
Ground, the polyacrylics are at least one of polyacrylamide, polyacrylic acid and Sodium Polyacrylate, so as to aobvious
The flotation for writing raising charcoal flotation agent proposes charcoal effect.
Charcoal flotation agent according to the present invention, it is preferable that the inhibitor is the mixture of citric acid and oxalic acid, lemon
The weight ratio of acid and oxalic acid is 1:0.5-2, proposes charcoal effect so as to further increase the flotation of charcoal flotation agent.
Charcoal flotation agent according to the present invention, oil base collecting agent can be the various oil base collecting agents of this field routine,
It such as can be diesel oil.
Charcoal flotation agent according to the present invention, the foaming agent can be the foaming agent type of this field routine, such as
It can be terpenic oil or sec-octyl alcohol.Preferably, the foaming agent is terpenic oil, so as to further increase the floating of charcoal flotation agent
Choosing proposes charcoal effect.
Charcoal flotation agent preparation method of the invention may include: to mix oil base collecting agent, inhibitor, activator and foaming agent
It closes.
Second aspect, the present invention provides above-mentioned charcoal flotation agent to propose the application in charcoal in flyash flotation.
Those skilled in the art knows, it may include successively carrying out roughing and selected that flyash flotation, which proposes charcoal process, slightly
Choose using be made charcoal flotation agent, it is selected in only need using the inhibitor in charcoal flotation agent.
In the present invention, flyash is the flyash collected in the slave circulation fluidized-bed combustion boiler flue of this field routine,
Its carbon content can be 5-30 weight %.
In the present invention, the flotation of flyash mention charcoal method can be this field routine method, such as may include: by
Flyash and water, which are sized mixing, is made 100-200g/l slurry, is subsequently poured into flotation device, adds charcoal flotation agent, carries out roughing, obtains
To thick charcoal and tail ash, then thick charcoal and water are sized mixing, 100-200g/l slurry is made, is subsequently poured into flotation device, add inhibition
Agent, progress is selected, obtains smart charcoal and middle ash.Wherein, roughing and selected concrete mode may include: to the slurry in flotation device
Stirring opens scraping blade and starts ore dressing, stop roughing or selected after color until foam bleaches when occurring a large amount of foams in slurry.Slightly
Choose, the dosage of charcoal flotation agent is preferably (100-2000)/1000000 of flyash weight, it is selected in, the dosage of inhibitor is excellent
Choosing is thick charcoal weight (50-150)/1000000.
In the present invention, it is preferable that flyash is first prepared into white clay, then white clay progress flotation is mentioned into charcoal, so as into
The flotation that one step improves charcoal flotation agent proposes charcoal effect, to improve the comprehensive utilization of flyash.
The third aspect, the present invention provides a kind of methods that flyash flotation mentions charcoal, this method comprises:
(1) white clay is prepared；(2) roughing is carried out to white clay using above-mentioned charcoal flotation agent, obtains thick charcoal；Use charcoal flotation agent
In inhibitor the thick charcoal is carried out it is selected.
Method according to the present invention, the method for preparing white clay can be the white clay preparation method of this field routine, example
It such as may include: that flyash is carried out to extraction reaction in hydrochloric acid solution.
Method according to the present invention, it is preferable that the concentration of hydrochloric acid solution is 5-30 weight %, relative to 100g fine coal
The dosage of ash, the hydrochloric acid solution is 300-400ml, so as to further decrease the aluminium in flyash, and then is significantly improved
Flotation proposes charcoal effect.
Method according to the present invention, it is preferable that the extraction reaction condition includes: that temperature is 130-180 DEG C, the time
Charcoal is mentioned so as to significantly improve flotation it is highly preferred that temperature is 150-160 DEG C, time 60-120min for 30-150min
Effect.
Method according to the present invention, the method that flotation mentions charcoal can be the method for this field routine, such as can wrap
It includes: white clay and water being sized mixing, 100-200g/l slurry is made, be subsequently poured into flotation device, add charcoal flotation agent, carry out roughing,
Thick charcoal and tail ash are obtained, then thick charcoal and water is sized mixing, 100-200g/l slurry is made, is subsequently poured into flotation device, adds inhibition
Agent, progress is selected, obtains smart charcoal and middle ash.Wherein, roughing and selected concrete mode may include: to the slurry in flotation device
Stirring opens scraping blade and starts ore dressing, stop roughing or selected after color until foam bleaches when occurring a large amount of foams in slurry.Slightly
Choose, the dosage of charcoal flotation agent is preferably (100-1000)/1000000 of white clay weight, particularly preferably (400-600)/
1000000；The thick charcoal is carried out using the inhibitor in charcoal flotation agent selected, wherein the dosage of the inhibitor is preferably
(50-150)/1000000 of thick charcoal weight, particularly preferably 100/1000000.
Embodiment
Diesel oil is purchased from Sinopharm Chemical Reagent Co., Ltd., CAS NO.68334-30-5, and Sodium Polyacrylate is purchased from traditional Chinese medicines
Chemical reagent Co., Ltd, group, CAS NO.9003-04-7, polyacrylic acid are purchased from Sinopharm Chemical Reagent Co., Ltd.,
CAS NO.9003-01-7, polyacrylamide are purchased from Sinopharm Chemical Reagent Co., Ltd., CAS NO.9003-05-8.
Embodiment 1
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
(1) by 70 weight % diesel oil, 10 weight % inhibitor (being made of citric acid and oxalic acid, weight ratio 1:0.5), 10
Weight % Sodium Polyacrylate (molecular weight 2000)) and 10 weight % terpenic oils be uniformly mixed；
(2) 200g flyash (carbon content 10%) is weighed, fly ash grain is ground into rear and 600ml25 weight % hydrochloric acid
Solution mixing carries out extraction reaction, and extraction temperature is 150 DEG C, extraction time 120min, extracts after reaction, by slurries mistake
Filter, filter cake are dried 12 hours at 120 DEG C, and the white clay filter cake after drying is made into the slurry of 100g/l with water, is subsequently poured into floating
It selects in machine, after stirring 5min, adds the charcoal flotation agent of above-mentioned preparation, the dosage of the charcoal flotation agent is the 500/ of white clay weight
1000000, the slurry in flotation device is continued to stir roughing, when occurring a large amount of foams in slurry, scraping blade is opened and starts ore dressing,
Stop roughing after bleaching color to foam, obtains thick charcoal and tail ash, then thick charcoal and water are sized mixing, 100g/l slurry is made, then fallen
Enter in flotation device, after stirring 5min, adds above-mentioned inhibitor, the dosage of the inhibitor is the 100/ of thick charcoal weight
1000000, the slurry in flotation device is continued to stir it is selected, when occurring a large amount of foams in slurry, open scraping blade start ore dressing,
Stop selected after bleaching color to foam, obtains smart charcoal and middle ash.
Embodiment 2
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
(1) by 65 weight % diesel oil, 10 weight % inhibitor (being made of citric acid and oxalic acid, weight ratio 1:1), 15 weights
It measures % polyacrylic acid (molecular weight 130000) and 10 weight % terpenic oils is uniformly mixed；
(2) 200g flyash (carbon content 15%) is weighed, fly ash grain is ground into rear and 800ml15 weight % hydrochloric acid
Solution mixing carries out extraction reaction, and extraction temperature is 150 DEG C, extraction time 90min, extracts after reaction, by slurries mistake
Filter, filter cake are dried 12 hours at 120 DEG C, and the white clay filter cake after drying is made into the slurry of 150g/l with water, is subsequently poured into floating
It selects in machine, after stirring 5min, adds the charcoal flotation agent of above-mentioned preparation, the dosage of the charcoal flotation agent is the 600/ of white clay weight
1000000, the slurry in flotation device is continued to stir roughing, when occurring a large amount of foams in slurry, scraping blade is opened and starts ore dressing,
Stop roughing after bleaching color to foam, obtains thick charcoal and tail ash, then thick charcoal and water are sized mixing, 150g/l slurry is made, then fallen
Enter in flotation device, after stirring 5min, adds above-mentioned inhibitor, the dosage of the inhibitor is the 150/ of thick charcoal weight
1000000, the slurry in flotation device is continued to stir it is selected, when occurring a large amount of foams in slurry, open scraping blade start ore dressing,
Stop selected after bleaching color to foam, obtains smart charcoal and middle ash.
Embodiment 3
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
(1) by 70 weight % diesel oil, 10 weight % inhibitor (being made of citric acid and oxalic acid, weight ratio 1:2), 10 weights
It measures % polyacrylamide (molecular weight 100000) and 10 weight % terpenic oils is uniformly mixed；
(2) 200g flyash (carbon content 10%) is weighed, fly ash grain is ground into rear and 600ml25 weight % hydrochloric acid
Solution mixing carries out extraction reaction, and extraction temperature is 160 DEG C, extraction time 60min, extracts after reaction, by slurries mistake
Filter, filter cake are dried 12 hours at 120 DEG C, and the white clay filter cake after drying is made into the slurry of 200g/l with water, is subsequently poured into floating
It selects in machine, after stirring 5min, adds the charcoal flotation agent of above-mentioned preparation, the dosage of the charcoal flotation agent is the 400/ of white clay weight
1000000, the slurry in flotation device is continued to stir roughing, when occurring a large amount of foams in slurry, scraping blade is opened and starts ore dressing,
Stop roughing after bleaching color to foam, obtains thick charcoal and tail ash, then thick charcoal and water are sized mixing, 200g/l slurry is made, then fallen
Enter in flotation device, after stirring 5min, adds above-mentioned inhibitor, the dosage of the inhibitor is the 50/ of thick charcoal weight
1000000, the slurry in flotation device is continued to stir it is selected, when occurring a large amount of foams in slurry, open scraping blade start ore dressing,
Stop selected after bleaching color to foam, obtains smart charcoal and middle ash.
Embodiment 4
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, charcoal flotation agent
Composition includes: that the content of diesel oil is 75 weight %, and the content of inhibitor is 15 weight %, the content of Sodium Polyacrylate is 5 weights
The content for measuring % and terpenic oil is 5 weight %.
Embodiment 5
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, charcoal flotation agent
Composition includes: that the content of diesel oil is 50 weight %, and the content of inhibitor is 15 weight %, the content of Sodium Polyacrylate is 20 weights
The content for measuring % and terpenic oil is 15 weight %.
Embodiment 6
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, the inhibitor
For the mixture of citric acid and oxalic acid, the weight ratio of citric acid and oxalic acid is 1:3.
Embodiment 7
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, inhibitor is only
Citric acid.
Embodiment 8
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, activator is benzene
Sodium sulfonate.
Embodiment 9
The present embodiment is used to illustrate the method that charcoal flotation agent and its application and flyash flotation of the invention mention charcoal.
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, terpenic oil is replaced
The sec-octyl alcohol of weight such as it is changed to.
Comparative example 1
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, inhibitor is replaced
The starch of weight such as it is changed to.
Comparative example 2
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, inhibitor is replaced
The carboxymethyl cellulose of weight such as it is changed to.
Comparative example 3
Prepare according to the method for embodiment 1 charcoal flotation agent and from flyash flotation mention charcoal, unlike, by polyacrylic acid
Sodium such as replaces at the oleic acid of weight.
Test case
White clay, thick charcoal, smart charcoal and tail ash in embodiment 1-9 and comparative example 1-3 is subjected to loss on ignition analysis, measures smart charcoal
As a result loss on ignition, tail ash loss on ignition see the table below 1, the measurement of loss on ignition is according to standard " flying dust and clinker combustible measuring method "
It carries out, method particularly includes: the sample for weighing certain mass is ashed it slowly at 825 DEG C, according to the Mass Calculation of its reduction
Combustible content therein, as loss on ignition.
Non- charcoal can float rate with formula η=(M1*LOI1)/(M*LOI) wherein, M1, M be respectively thick charcoal, white clay quality,
LOI1, LOI be respectively thick charcoal loss on ignition, white clay loss on ignition.
Smart charcoal yield is ψ=M with formula2/ M, wherein M2, M be respectively smart charcoal, white clay quality.
Rate and smart charcoal yield can be floated by calculating non-charcoal according to above-mentioned formula, as a result see the table below 1.
Table 1
| Embodiment | LOI (smart charcoal) | ψ | η | LOI (tail ash) |
| Embodiment 1 | 90% | 25% | 98.3% | 0.5% |
| Embodiment 2 | 91% | 24% | 98.2% | 0.6% |
| Embodiment 3 | 90% | 23% | 97.3% | 0.6% |
| Embodiment 4 | 87% | 22% | 96.1% | 1.1% |
| Embodiment 5 | 87% | 21% | 96.3% | 1.2% |
| Embodiment 6 | 86% | 20% | 95.1% | 1.5% |
| Embodiment 7 | 83% | 18% | 95.0% | 1.7% |
| Embodiment 8 | 82% | 17% | 95.2% | 1.6% |
| Embodiment 9 | 87% | 20% | 95.1% | 1.5% |
| Comparative example 1 | 76% | 10% | 94.9% | 2.5% |
| Comparative example 2 | 77% | 11% | 95.10% | 2.3% |
| Comparative example 3 | 74% | 10% | 90.24% | 2.5% |
It, can be with by embodiment 1-9 as can be seen that carry out flotation using charcoal flotation agent of the invention compared with comparative example 1-3
So that smart charcoal loss on ignition is greater than 80%, smart charcoal yield is greater than 20%, and non-charcoal can float rate greater than 95%, and tail ash loss on ignition is lower than
1.7%, therefore, it is preferable that the flotation of charcoal flotation agent of the invention proposes charcoal effect.
Embodiment 1 and embodiment 4 and 5 are compared respectively as can be seen that working as oil base in charcoal flotation agent of the invention
The content of collecting agent is 60-70 parts by weight, and the content of inhibitor is 7-10 parts by weight, and the content of activator is 10-15 parts by weight,
When the content of foaming agent is 7-10 parts by weight, the flotation that can further increase the charcoal flotation agent proposes charcoal effect.
Embodiment 1 and embodiment 6, which are compared, can be seen that in charcoal flotation agent of the invention, when citric acid and grass
When the weight ratio of acid is 1:0.5-2, the flotation that can further increase the charcoal flotation agent proposes charcoal effect.
Embodiment 1 and embodiment 7 are compared as can be seen that in charcoal flotation agent of the invention, when being when inhibitor
When the mixture of citric acid and oxalic acid, the flotation that can further increase the charcoal flotation agent proposes charcoal effect.
Embodiment 1 and embodiment 8, which are compared, can be seen that in charcoal flotation agent of the invention, when the activator
When at least one of polyacrylamide, polyacrylic acid and Sodium Polyacrylate, the charcoal flotation agent can be further increased
Flotation proposes charcoal effect.
Embodiment 1 and embodiment 9, which are compared, can be seen that in charcoal flotation agent of the invention, when the foaming agent
When for terpenic oil, the flotation that can further increase the charcoal flotation agent proposes charcoal effect.
The hydrophobicity and floatability of non-charcoal can be improved in charcoal flotation agent of the invention, while utilizing hydrogen bond force, electrostatic attraction
And the hydrophily of chemisorption enhancing siulica-alumina mineral, the effective dispersion for inhibiting siulica-alumina mineral floating and other ash contents,
To improve the settling property of flotation tail ash.It is unburned after carrying out flotation to flyash or white clay using charcoal flotation agent of the invention
Charcoal emersion rate up to can to 95% or more, and after flotation, smart charcoal also has certain economic value, loss on ignition reaches 80% or more, can
Raw material as the preparation of secondary fuel, rubber reinforcing filler, carbon black and active carbon.Therefore, it is carried out using charcoal flotation agent of the invention
Flyash or white clay flotation mention charcoal, not only can satisfy the requirement of building trade, but also the synthesis of flyash can be improved
Utility value also has biggish economic interests and social benefit in terms of rationally utilizing resource, improving environmental protection.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (9)
1. a kind of charcoal flotation agent, which is characterized in that the charcoal flotation agent contains oil base collecting agent, inhibitor, activator and foaming agent,
Wherein, the oil base collecting agent be diesel oil, the foaming agent be terpenic oil or sec-octyl alcohol, the inhibitor be citric acid and/or
Oxalic acid, the activator are at least one of polyacrylic acid and Sodium Polyacrylate, and the content of the oil base collecting agent is 50-80
Parts by weight, the content of the inhibitor are 5-15 parts by weight, and the content of the activator is 5-20 parts by weight, the foaming agent
Content is 5-15 parts by weight.
2. charcoal flotation agent according to claim 1, wherein the content of the oil base collecting agent is 60-70 parts by weight, described
The content of inhibitor is 7-10 parts by weight, and the content of the activator is 10-15 parts by weight, and the content of the foaming agent is 7-10
Parts by weight.
3. charcoal flotation agent according to claim 1 or 2, wherein the inhibitor is the mixture of citric acid and oxalic acid, lemon
The weight ratio of lemon acid and oxalic acid is 1:0.5-2.
4. charcoal flotation agent described in any one of claim 1-3 proposes the application in charcoal in flyash flotation.
5. a kind of method that flyash flotation mentions charcoal, which is characterized in that this method comprises:
(1) white clay is prepared；
(2) roughing is carried out to white clay using charcoal flotation agent described in any one of claim 1-3, obtains thick charcoal；
(3) the thick charcoal is carried out using the inhibitor in charcoal flotation agent selected.
6. according to the method described in claim 5, wherein, the method for preparing white clay include: by flyash in hydrochloric acid solution into
Row extraction reaction.
7. according to the method described in claim 6, wherein, the concentration of hydrochloric acid solution is 5-30 weight %, relative to 100g fine coal
Ash, the dosage of the hydrochloric acid solution are 300-400ml.
8. it is 130-180 DEG C that the condition of the extraction reaction, which includes: temperature, according to the method described in claim 6, wherein, when
Between be 30-150min.
9. it is 150-160 DEG C that the condition of the extraction reaction, which includes: temperature, according to the method described in claim 8, wherein, when
Between be 60-120min.
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| CN108906339A (en) * | 2018-09-10 | 2018-11-30 | 贵州大学 | A kind of Floatation of Removal Carbon method of flyash |
| CN109772591A (en) * | 2019-03-22 | 2019-05-21 | 山东超美清洁能源有限公司 | A kind of energy conservation and environmental protection, helping for clean and effective select agent |
| CN110605182B (en) * | 2019-10-25 | 2022-02-01 | 福建三钢闽光股份有限公司 | Blast furnace cloth bag dedusting ash flotation reagent and application method thereof |
| CN112941328A (en) * | 2019-12-11 | 2021-06-11 | 内蒙古蒙泰集团有限公司 | Treatment method for recycling fly ash |
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