CN106669978A - Charcoal floating agent, application thereof, and flyash floating charcoal extracting method - Google Patents
Charcoal floating agent, application thereof, and flyash floating charcoal extracting method Download PDFInfo
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Abstract
The invention relates to a charcoal floating agent. The charcoal floating agent comprises an oil-base collecting agent, an inhibitor, an activator and a foaming agent, wherein the inhibitor is citric acid and/or citric acid; the activator is a polypropylene acid material; the content of the oil-base collecting agent is 50-80 weight parts; the content of the inhibitor is 5-15 weight parts; the content of the activator is 5-20 weight parts; and the content of the foaming agent is 5-15 weight parts. The invention further relates to application of the charcoal floating agent in flyash floating charcoal extraction, and a flyash floating charcoal extracting method. After the charcoal floating agent is used for floating of flyash or lime mud, the floating rate of unburned charcoal is 95% or above, concentrated charcoal has certain economic value after floating, the ignition loss can reach 80% or above, and the concentrated charcoal can serve as raw materials for preparing secondary fuel, rubber reinforcing filler, carbon black and activated carbon.
Description
Technical field
The present invention relates to flyash flotation field, in particular it relates to a kind of charcoal flotation agent, and the charcoal is floating
Select agent that the method that the application in charcoal and flyash flotation carry charcoal is put forward in flyash flotation.
Background technology
After coal burns completely, the combustible constituent combustion heat release amount in coal, moisture in coal evaporation is remaining
Part is the mineral matter of coal, and the mineral matter is the ash content that metal and nonmetallic oxide and salt are formed.
With coal as main energy sources, up to more than 400,000,000 tons, the whole nation has produced flyash to annual steam coal for power within 1997 years for China
More than 100,000,000 tons, become ash discharge state the biggest in the world, cause serious environmental pollution and occupy a large amount of
Soil.
In addition, white clay is the residue that flyash acid extracting extracts alumina technology, its complex chemical composition,
Predominantly silica, alundum (Al2O3), titanium dioxide, calcium oxide and unburned charcoal etc..According to statistics,
Flyash acid extracting extraction alumina technology often produces 1 ton of aluminum oxide will produce about 1.3 tons of white clays.By
Thinner, the complex chemical composition in white clay particle, loss will be caused to resources such as farmland, river, underground water
Serious pollution, and bulk deposition land occupation, also severely compromise the health and ecological environment of human body.
Therefore, how rationally the key that flyash acid extracting extracts alumina technology is had become using white clay,
It is the key for improving total utilization of PCA value.
At present, the comprehensive utilization of white clay is also in the laboratory research stage, Main way concentrate on filler,
The industries such as construction material.And the unburned carbon content of white clay is higher, being applied to construction material will have a strong impact on product
Intensity, freeze-thaw resistance and impermeability.In order to meet white clay in cement, concrete, silicate product etc.
Requirement in engineer applied, it is necessary to which decarbonisation is carried out to white clay.It has been investigated that, unburned charcoal in white clay
Loose porous, surface hydrophobicity oleophylic, using carbon granule and the difference of other soot particle surface wettabilities, can select
Froth flotation method sorts out carbon granule from white clay.But due to unburned charcoal Jing high-temp combustions, salt Ore Leaching
Etc. process, surface severe oxidation, hydrophily increases, and flotation activity is reduced, therefore, using froth flotation
In removing white clay during unburned carbon granule, flotation effect is not good, and the rate of recovery of charcoal is low.
With regard to the research of flotation agent, patent application CN101357352A discloses a kind of flyash flotation medicine
Agent and preparation method thereof, the flyash floating agent contain 60-85 weight % non-polar oils (diesel oil, kerosene,
Motor oil or fuel oil), (oleic acid, vegetable oil or carbon chain length are less than 18 carbon originals to 5-20 weight % activating agents
The fatty acid ester of son) and 10-35 weight % foaming agents (sec-octyl alcohol, fusel, GF are oily), flyash can be made
Middle combustible component emersion rate reaches more than 95%, but, the preparation process of the flotation agent is more complicated, foam
It is unstable, and flotation agent consumption is larger.
Patent application CN104477906A discloses a kind of method that activated carbon is extracted from flyash, tool
Body is disclosed：After pine-seed oil, kerosene, diesel oil and starch are mixed, emulsifying agent is obtained, then by emulsifying agent
It is well mixed with syringyl alcohol, but its flotation effect and bad, and the preparation process of flotation agent is also more complicated.
The content of the invention
The invention aims to overcoming in prior art, charcoal flotation effect is poor and prepared by charcoal flotation agent
A kind of more complicated defect of journey, there is provided charcoal flotation agent, and the charcoal flotation agent carried in charcoal in flyash flotation
Application and the flyash flotation method that carries charcoal.
The present inventor is found that under study for action a kind of efficient charcoal flotation agent, and it contains oil base collecting agent, suppression
Preparation, 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 weight portions, the inhibitor
Content is 5-15 weight portions, and the content of the activator is 5-20 weight portions, the content of the foaming agent
For 5-15 weight portions, the flotation effect of charcoal flotation agent can be significantly improved.
Therefore, to achieve these goals, on the one hand, the invention provides a kind of charcoal flotation agent, the charcoal
Flotation agent contains oil base collecting agent, inhibitor, activator and foaming agent, wherein, the inhibitor is lemon
Lemon acid and/or oxalic acid, the activator is polyacrylics, and the content of the oil base collecting agent is
50-80 weight portions, the content of the inhibitor is 5-15 weight portions, and the content of the activator is 5-20
Weight portion, the content of the foaming agent is 5-15 weight portions.
Second aspect, the invention provides above-mentioned charcoal flotation agent proposes the application in charcoal in flyash flotation.
The third aspect, the invention provides a kind of method that flyash flotation carries charcoal, the method includes：(1)
Prepare white clay；(2) white clay is roughly selected using above-mentioned charcoal flotation agent, obtains thick charcoal, wherein, charcoal
The consumption of 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 it is selected, wherein, the suppression
The consumption of agent is preferably (50-150)/1000000 of thick charcoal weight, and particularly preferably 100/1000000.
The charcoal flotation agent of the present invention can improve the hydrophobicity and floatability of unburned charcoal, at the same using hydrogen bond force,
Electrostatic attraction and chemisorption strengthen the hydrophily of siulica-alumina mineral, effectively suppress on siulica-alumina mineral
The dispersion of floating and other ash contents, to improve the settling property of flotation tail ash.Using the charcoal flotation agent of the present invention
Flyash or white clay are carried out after flotation, unburned charcoal emersion rate reaches can be to more than 95% and smart after flotation
Charcoal also has certain economic worth, and loss on ignition reaches more than 80%, can mend as secondary fuel, rubber
Raw material prepared by strong agent, carbon black and activated carbon.Therefore, flyash is carried out using the charcoal flotation agent of the present invention
Or white clay flotation carries charcoal, the requirement of building trade not only can be met, but also flyash can be improved
Comprehensive utilization value, also have making rational use of resources, in terms of improving environmental protection larger economic interests and
Social benefit.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
On the one hand, the invention provides a kind of charcoal flotation agent, the charcoal flotation agent contains oil base collecting agent, suppression
Preparation, 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 weight portions, the inhibitor
Content is 5-15 weight portions, and the content of the activator is 5-20 weight portions, the content of the foaming agent
For 5-15 weight portions.
According to charcoal flotation agent of the present invention, it is preferable that the content of the oil base collecting agent is 60-70
Weight portion, the content of the inhibitor is 7-10 weight portions, and the content of the activator is 10-15 weight
Part, the content of the foaming agent is 7-10 weight portions such that it is able to significantly improve the flotation of charcoal flotation agent
Put forward charcoal effect.
According to charcoal flotation agent of the present invention, as long as the activator is polyacrylics,
To its performance and concrete species, there is no particular limitation, and the molecular weight of such as polyacrylics can be with
For 2000-500000, it is preferable that the polyacrylics be polyacrylamide, polyacrylic acid and
At least one in Sodium Polyacrylate such that it is able to which the flotation for significantly improving charcoal flotation agent puies forward charcoal effect.
According to charcoal flotation agent of the present invention, it is preferable that the inhibitor is the mixed of citric acid and oxalic acid
The weight ratio of compound, citric acid and oxalic acid is 1：0.5-2 such that it is able to further improve charcoal flotation agent
Flotation puies forward charcoal effect.
According to charcoal flotation agent of the present invention, oil base collecting agent can be the conventional various oil bases in this area
Collecting agent, for example, can be diesel oil.
According to charcoal flotation agent of the present invention, the foaming agent can be the conventional foaming agent kind in this area
Class, for example, can be terpenic oil or sec-octyl alcohol.Preferably, the foaming agent is terpenic oil such that it is able to
The flotation for further improving charcoal flotation agent puies forward charcoal effect.
The charcoal flotation agent preparation method of the present invention can include：By oil base collecting agent, inhibitor, activator
With foaming agent mixing.
Second aspect, the invention provides above-mentioned charcoal flotation agent proposes the application in charcoal in flyash flotation.
Those skilled in the art knows, flyash flotation carry charcoal process can include carrying out roughly selecting successively and
It is selected, be obtained charcoal flotation agent used in roughly selecting, it is selected in only need to using the inhibitor in charcoal flotation agent i.e.
Can.
In the present invention, flyash is that this area is conventional to be collected from circulation fluidized-bed combustion boiler flue
Flyash, its carbon content can be 5-30 weight %.
In the present invention, it can be the conventional method in this area that the flotation of flyash puies forward the method for charcoal, for example may be used
To include：Flyash and water are sized mixing and makes 100-200g/l slips, in being subsequently poured into flotation device, then added
Enter charcoal flotation agent, roughly selected, obtain thick charcoal and tail ash, then thick charcoal and water are sized mixing make 100-200g/l
Slip, in being subsequently poured into flotation device, adds inhibitor, carries out selected, obtains smart charcoal and middle ash.Its
In, roughly selecting can include with selected concrete mode：Slip in flotation device is stirred, treats to go out in slip
Now during a large amount of foams, open scraping blade and start ore dressing, become to foam and stop roughly selecting or selected after white.Roughly select
In, the consumption of charcoal flotation agent is preferably (100-2000)/1000000 of flyash weight, it is selected in,
The consumption of inhibitor is preferably (50-150)/1000000 of thick charcoal weight.
In the present invention, it is preferable that flyash is first prepared into white clay, then white clay is carried out into flotation and carry charcoal,
Flotation so as to further improve charcoal flotation agent puies forward charcoal effect, to improve the comprehensive utilization of flyash.
The third aspect, the invention provides a kind of method that flyash flotation carries charcoal, the method includes：
(1) white clay is prepared；(2) white clay is roughly selected using above-mentioned charcoal flotation agent, obtains thick charcoal；
The thick charcoal is carried out using the inhibitor in charcoal flotation agent selected.
According to method of the present invention, the method for preparing white clay can be prepared by the conventional white clay in this area
Method, for example, can include：Flyash is carried out in hydrochloric acid solution extraction reaction.
According to method of the present invention, it is preferable that the concentration of hydrochloric acid solution is 5-30 weight %, relatively
In 100g flyash, the consumption of the hydrochloric acid solution is 300-400ml such that it is able to further reduce powder
Aluminium in coal ash, and then significantly improve flotation and put forward charcoal effect.
According to method of the present invention, it is preferable that the extraction reaction condition includes：Temperature is
130-180 DEG C, the time is 30-150min, it is highly preferred that temperature is 150-160 DEG C, the time is
60-120min such that it is able to significantly improve flotation and put forward charcoal effect.
According to method of the present invention, flotation puies forward the method that the method for charcoal can be this area routine, example
Such as can include：White clay and water are sized mixing and makes 100-200g/l slips, in being subsequently poured into flotation device, then
Charcoal flotation agent is added, is roughly selected, obtain thick charcoal and tail ash, then thick charcoal is sized mixing with water made
100-200g/l slips, in being subsequently poured into flotation device, add inhibitor, carry out selected, obtain smart charcoal
With middle ash.Wherein, roughly selecting can include with selected concrete mode：Slip in flotation device is stirred,
When occurring a large amount of foams in slip, open scraping blade start ore dressing, to foam become white after stop roughly select or
It is selected.In roughly selecting, the consumption 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
It is selected, wherein, the consumption of the inhibitor is preferably (50-150)/1000000 of thick charcoal weight, special
You Xuanshi 100/1000000.
Embodiment
Diesel oil is purchased from Chemical Reagent Co., Ltd., Sinopharm Group, CAS NO.68334-30-5, polyacrylic acid
Sodium is purchased from Chemical Reagent Co., Ltd., Sinopharm Group, and CAS NO.9003-04-7, polyacrylic acid is purchased from traditional Chinese medicines
Chemical reagent Co., Ltd of group, CAS NO.9003-01-7, polyacrylamide is purchased from Chinese medicines group chemistry
Reagent Co., Ltd, CAS NO.9003-05-8.
Embodiment 1
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
(1) 70 weight % diesel oil, 10 weight % inhibitor (are made up of, weight citric acid and oxalic acid
Than for 1：0.5), 10 weight % Sodium Polyacrylates (molecular weight is 2000)) and 10 weight % terpenic oils
It is well mixed；
(2) 200g flyash (carbon content is 10%) is weighed, fly ash grain is ground into rear and 600ml
The mixing of 25 weight % hydrochloric acid solutions carries out extraction reaction, and extraction temperature is 150 DEG C, and extraction time is
120min, after extraction reaction terminates, slurries is filtered, and filter cake is dried 12 hours at 120 DEG C, will
White clay filter cake after drying is made into the slip of 100g/l with water, in being subsequently poured into flotation device, stirs 5min
Afterwards, the charcoal flotation agent of above-mentioned preparation is added, the consumption of the charcoal flotation agent is white clay weight
500/1000000, stirring is continued to the slip in flotation device and is roughly selected, when occurring a large amount of foams in slip,
Open scraping blade and start ore dressing, become to foam and stop roughly selecting after white, obtain thick charcoal and tail ash, then will be thick
Charcoal is sized mixing with water and makes 100g/l slips, in being subsequently poured into flotation device, after stirring 5min, is added
Inhibitor is stated, the consumption of the inhibitor is the 100/1000000 of thick charcoal weight, to the material in flotation device
Slurry continues to stir selected, when occurring a large amount of foams in slip, opens scraping blade and starts ore dressing, becomes to foam
Stop selected after white, obtain smart charcoal and middle ash.
Embodiment 2
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
(1) 65 weight % diesel oil, 10 weight % inhibitor (are made up of, weight citric acid and oxalic acid
Than for 1：1), 15 weight % polyacrylic acid (molecular weight is 130000) and 10 weight % terpenic oils are mixed
Close uniform；
(2) 200g flyash (carbon content is 15%) is weighed, fly ash grain is ground into rear and 800ml
The mixing of 15 weight % hydrochloric acid solutions carries out extraction reaction, and extraction temperature is 150 DEG C, and extraction time is 90min,
Extraction reaction terminate after, slurries are filtered, filter cake is dried 12 hours at 120 DEG C, by drying after it is white
Mud filter cake is made into the slip of 150g/l with water, in being subsequently poured into flotation device, after stirring 5min, adds
The charcoal flotation agent of above-mentioned preparation, the consumption of the charcoal flotation agent is the 600/1000000 of white clay weight, right
Slip in flotation device continues stirring and roughly selects, and when occurring a large amount of foams in slip, opens scraping blade and starts choosing
Ore deposit, becomes to foam and stop roughly selecting after white, obtains thick charcoal and tail ash, then thick charcoal is sized mixing with water and is made
150g/l slips, in being subsequently poured into flotation device, after stirring 5min, add above-mentioned inhibitor, described
The consumption of inhibitor is the 150/1000000 of thick charcoal weight, and the slip in flotation device is continued to stir selected,
When occurring a large amount of foams in slip, open scraping blade and start ore dressing, become to foam and stop after white selected,
Obtain smart charcoal and middle ash.
Embodiment 3
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
(1) by 70 weight % diesel oil, 10 weight % inhibitor (are made up of, weight citric acid and oxalic acid
Than for 1：2), 10 weight % polyacrylamides (molecular weight is 100000) and 10 weight % terpenic oils
It is well mixed；
(2) 200g flyash (carbon content is 10%) is weighed, fly ash grain is ground into rear and 600ml
The mixing of 25 weight % hydrochloric acid solutions carries out extraction reaction, and extraction temperature is 160 DEG C, and extraction time is 60min,
Extraction reaction terminate after, slurries are filtered, filter cake is dried 12 hours at 120 DEG C, by drying after it is white
Mud filter cake is made into the slip of 200g/l with water, in being subsequently poured into flotation device, after stirring 5min, adds
The charcoal flotation agent of above-mentioned preparation, the consumption of the charcoal flotation agent is the 400/1000000 of white clay weight, right
Slip in flotation device continues stirring and roughly selects, and when occurring a large amount of foams in slip, opens scraping blade and starts choosing
Ore deposit, becomes to foam and stop roughly selecting after white, obtains thick charcoal and tail ash, then thick charcoal is sized mixing with water and is made
200g/l slips, in being subsequently poured into flotation device, after stirring 5min, add above-mentioned inhibitor, described
The consumption of inhibitor is the 50/1000000 of thick charcoal weight, and the slip in flotation device is continued to stir selected,
When occurring a large amount of foams in slip, open scraping blade and start ore dressing, become to foam and stop after white selected,
Obtain smart charcoal and middle ash.
Embodiment 4
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
The composition of charcoal flotation agent includes：The content of diesel oil is 75 weight %, the content of inhibitor be 15 weight %,
It is 5 weight % that the content of Sodium Polyacrylate is the content of 5 weight % and terpenic oil.
Embodiment 5
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
The composition of charcoal flotation agent includes：The content of diesel oil is 50 weight %, the content of inhibitor be 15 weight %,
It is 15 weight % that the content of Sodium Polyacrylate is the content of 20 weight % and terpenic oil.
Embodiment 6
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
It is 1 that the inhibitor is the weight ratio of the mixture of citric acid and oxalic acid, citric acid and oxalic acid：3.
Embodiment 7
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Inhibitor is only citric acid.
Embodiment 8
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Activator is benzene sulfonic acid sodium salt.
Embodiment 9
The present embodiment is used to illustrate the side that the charcoal flotation agent of the present invention and its application and flyash flotation carry charcoal
Method.
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Terpenic oil such as is replaced with the sec-octyl alcohol of weight.
Comparative example 1
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Inhibitor such as is replaced with the starch of weight.
Comparative example 2
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Inhibitor such as is replaced with the carboxymethylcellulose calcium of weight.
Comparative example 3
Method according to embodiment 1 prepare charcoal flotation agent and from flyash flotation carry charcoal, except for the difference that,
Sodium Polyacrylate such as is replaced with the oleic acid of weight.
Test case
White clay in embodiment 1-9 and comparative example 1-3, thick charcoal, smart charcoal and tail ash are carried out into loss on ignition point
Analysis, measures smart charcoal loss on ignition, tail ash loss on ignition, as a result see the table below 1, and the measure of loss on ignition is according to standard
" flying dust and slag combustible assay method " is carried out, and concrete grammar is：The sample of certain mass is weighed,
It is set slowly to be ashed at 825 DEG C, according to the Mass Calculation combustible content therein that it is reduced, as
Loss on ignition.
Unburned charcoal can float rate with formula η=(M1*LOI1)/(M*LOI) wherein, M1, M is respectively
Thick charcoal, white clay quality, LOI1, LOI be respectively thick charcoal loss on ignition, white clay loss on ignition.
Smart charcoal yield with formula as ψ=M2/ M, wherein, M2, M be respectively smart charcoal, white clay quality.
Calculating unburned charcoal according to above-mentioned formula can float rate and smart charcoal yield, 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% |
Embodiment 1-9 is compared with comparative example 1-3 as can be seen that being carried out using the charcoal flotation agent of the present invention
Flotation, can cause smart charcoal loss on ignition more than 80%, and smart charcoal yield is more than 20%, and it is big that unburned charcoal can float rate
In 95%, tail ash loss on ignition is less than 1.7%, therefore, the flotation of the charcoal flotation agent of the present invention puies forward charcoal effect
Preferably.
Embodiment 1 and embodiment 4 and 5 are compared respectively as can be seen that in the charcoal flotation of the present invention
In agent, when the content of oil base collecting agent is 60-70 weight portions, the content of inhibitor is 7-10 weight portions,
The content of activator is 10-15 weight portions, when the content of foaming agent is 7-10 weight portions, can be further
The flotation for improving the charcoal flotation agent puies forward charcoal effect.
Embodiment 1 and embodiment 6 are compared as can be seen that in the charcoal flotation agent of the present invention, when
The weight ratio of citric acid and oxalic acid is 1：During 0.5-2, the flotation of the charcoal flotation agent can be further improved
Put forward charcoal effect.
Embodiment 1 and embodiment 7 are compared as can be seen that in the charcoal flotation agent of the present invention, when
When the mixture that inhibitor is citric acid and oxalic acid, the flotation of the charcoal flotation agent can be further improved
Put forward charcoal effect.
Embodiment 1 and embodiment 8 are compared as can be seen that in the charcoal flotation agent of the present invention, when
The activator be polyacrylamide, polyacrylic acid and Sodium Polyacrylate in it is at least one when, Neng Goujin
One step improves the flotation of the charcoal flotation agent and puies forward charcoal effect.
Embodiment 1 and embodiment 9 are compared as can be seen that in the charcoal flotation agent of the present invention, when
When the foaming agent is terpenic oil, the flotation that can further improve the charcoal flotation agent puies forward charcoal effect.
The charcoal flotation agent of the present invention can improve the hydrophobicity and floatability of unburned charcoal, at the same using hydrogen bond force,
Electrostatic attraction and chemisorption strengthen the hydrophily of siulica-alumina mineral, effectively suppress on siulica-alumina mineral
The dispersion of floating and other ash contents, to improve the settling property of flotation tail ash.Using the charcoal flotation agent of the present invention
Flyash or white clay are carried out after flotation, unburned charcoal emersion rate reaches can be to more than 95% and smart after flotation
Charcoal also has certain economic worth, and loss on ignition reaches more than 80%, can mend as secondary fuel, rubber
Raw material prepared by strong agent, carbon black and activated carbon.Therefore, flyash is carried out using the charcoal flotation agent of the present invention
Or white clay flotation carries charcoal, the requirement of building trade not only can be met, but also flyash can be improved
Comprehensive utilization value, also have making rational use of resources, in terms of improving environmental protection larger economic interests and
Social benefit.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, can be to the technical side of the present invention
Case carries out various simple variants, and these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (11)
1. a kind of charcoal flotation agent, it is characterised in that the charcoal flotation agent contain oil base collecting agent, inhibitor,
Activator and foaming agent, wherein, the inhibitor is citric acid and/or oxalic acid, and the activator is poly- third
Alkene acid, the content of the oil base collecting agent is 50-80 weight portions, and the content of the inhibitor is
5-15 weight portions, the content of the activator is 5-20 weight portions, and the content of the foaming agent is 5-15
Weight portion.
2. charcoal flotation agent according to claim 1, wherein, the content of the oil base collecting agent is
60-70 weight portions, the content of the inhibitor is 7-10 weight portions, and the content of the activator is 10-15
Weight portion, the content of the foaming agent is 7-10 weight portions.
3. charcoal flotation agent according to claim 1 and 2, wherein, the activator is polypropylene
At least one in acid amides, polyacrylic acid and Sodium Polyacrylate.
4. charcoal flotation agent according to claim 1 and 2, wherein, the inhibitor is citric acid
It is 1 with the weight ratio of the mixture of oxalic acid, citric acid and oxalic acid：0.5-2.
5. charcoal flotation agent according to claim 1 and 2, wherein, the oil base collecting agent is bavin
Oil.
6. charcoal flotation agent according to claim 1 and 2, wherein, the foaming agent is terpenic oil
Or sec-octyl alcohol.
7. the charcoal flotation agent in claim 1-6 described in any one carries answering in charcoal in flyash flotation
With.
8. a kind of method that flyash flotation carries charcoal, it is characterised in that the method includes：
(1) white clay is prepared；
(2) white clay is roughly selected using the charcoal flotation agent described in any one in claim 1-6,
Obtain thick charcoal；
(3) the thick charcoal is carried out using the inhibitor in charcoal flotation agent selected.
9. method according to claim 8, wherein, preparing the method for white clay includes：By fine coal
Ash carries out extraction reaction in hydrochloric acid solution.
10. method according to claim 9, wherein, the concentration of hydrochloric acid solution is 5-30 weight %,
Relative to 100g flyash, the consumption of the hydrochloric acid solution is 300-400ml.
11. methods according to claim 9, wherein, the condition of the extraction reaction includes：Temperature
Spend for 130-180 DEG C, the time is 30-150min, it is preferable that temperature is 150-160 DEG C, and the time is
60-120min。
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