CN115746628A - Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof - Google Patents
Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof Download PDFInfo
- Publication number
- CN115746628A CN115746628A CN202211450609.XA CN202211450609A CN115746628A CN 115746628 A CN115746628 A CN 115746628A CN 202211450609 A CN202211450609 A CN 202211450609A CN 115746628 A CN115746628 A CN 115746628A
- Authority
- CN
- China
- Prior art keywords
- carbon black
- aqueous suspension
- parts
- tires
- thermal cracking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to the technical field of inorganic fillers, in particular to a thermal cracking carbon black aqueous suspension of waste tires, a preparation method and an application thereof. The waste tire thermal cracking carbon black aqueous suspension comprises the following components in parts by weight: 85-100 parts of cracking carbon black slurry, 0.05-5 parts of surfactant, 0.05-3 parts of viscosity reducer, 0.05-1 part of anti-settling agent, 0.05-2 parts of preservative and 0.05-2 parts of defoamer; the cracking carbon black slurry mainly comprises carbon black obtained by cracking waste tires and water. The thermal cracking carbon black aqueous suspension of waste tires provided by the invention can avoid dust hazard in the production and transportation process, has high solid content and low viscosity, is easy to disperse in various aqueous systems, and can be stored for a long time.
Description
Technical Field
The invention relates to the technical field of inorganic fillers, in particular to a thermal cracking carbon black aqueous suspension of waste tires, a preparation method and an application thereof.
Background
The waste tire thermal cracking carbon black is a residual solid phase substance obtained by removing cracking oil and cracking gas in the waste tire high-temperature cracking process, has the characteristics of high particle aggregation degree, low surface activity, low structure and the like, and cannot be compared with the conventional carbon black.
In order to realize the high added value recycling of the waste tire thermal cracking carbon black, the waste tire thermal cracking carbon black needs to be subjected to fine processing treatment. The deeply processed cracked carbon black can be applied to rubber and plastic products, asphalt modifier, activated carbon and other industries. The thermal cracking carbon black has the visual advantage of blue color, the powder product after deep processing has the characteristics of low structure degree, low viscosity, good fluidity and the like, and the dispersibility, fluidity, surface gloss and the like of the thermal cracking carbon black can be effectively improved when the thermal cracking carbon black is added into ink or paint.
However, the thermal cracking carbon black powder is liable to generate a large amount of dust during use, which is not favorable for protecting environment and human health, and is inconvenient for use and transportation.
In addition, the aqueous filler suspensions in the prior art have the problems of high viscosity, difficult dispersion, poor storage stability and the like due to high solid content.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first objective of the present invention is to provide an aqueous suspension of thermal cracked carbon black of waste tires, which can avoid the dust hazard during the production and transportation process. In addition, the waste tire thermal cracking carbon black aqueous suspension provided by the invention has high solid content, low viscosity, easy dispersion in various aqueous systems and good storage stability.
The second objective of the present invention is to provide a method for preparing thermal cracking carbon black aqueous suspension of junked tires, which has the advantages of simple process, easy operation, and easy mass production.
The third purpose of the invention is to provide the application of the thermal cracking carbon black aqueous suspension of waste tires in water-based paint, water-based ink and latex.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
in a first aspect, the invention provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight:
85-100 parts of cracking carbon black slurry, 0.05-5 parts of surfactant, 0.05-3 parts of viscosity reducer, 0.05-1 part of anti-settling agent, 0.05-2 parts of preservative and 0.05-2 parts of defoamer;
the cracking carbon black slurry mainly comprises carbon black obtained by cracking waste tires and water.
The waste tire thermal cracking carbon black aqueous suspension provided by the invention can avoid dust hazard in the production and transportation processes. The operation modes such as pumping, spraying and the like can be adopted in the using process, so that the environmental dust pollution is reduced, and the method is safe and nontoxic.
In addition, the waste tire thermal cracking carbon black aqueous suspension provided by the invention has high solid content, low viscosity, easy dispersion in various aqueous systems, long-term storage, good storage stability and no sedimentation after three months of storage.
In some embodiments of the present invention, the weight portion of the cracked carbon black slurry may take any of 85 to 100 parts, including but not limited to any of 87 parts, 89 parts, 90 parts, 92 parts, 94 parts, 95 parts, 97 parts, 99 parts, or any range therebetween.
The weight portion of the surfactant can adopt any value of 0.05-5 parts, including but not limited to any one of 0.07 part, 0.09 part, 0.1 part, 0.3 part, 0.5 part, 0.8 part, 1 part, 1.5 part, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts and 4.5 parts, or a range value between any two. Wherein, the surfactant can reduce the viscosity of the aqueous suspension of the thermal cracking carbon black of the waste tires.
The weight portion of the viscosity reducer can adopt any value of 0.05-3 parts, including but not limited to any value of 0.07 part, 0.09 part, 0.1 part, 0.3 part, 0.5 part, 1 part, 1.5 part, 2 parts, 2.5 parts and 2.8 parts or a range value between any two.
The weight portion of the anti-settling agent can adopt any value of 0.05 to 1 portion, including but not limited to any one of the point values of 0.07 portion, 0.09 portion, 0.1 portion, 0.15 portion, 0.2 portion, 0.25 portion, 0.3 portion, 0.35 portion, 0.4 portion, 0.45 portion, 0.5 portion, 0.6 portion, 0.7 portion, 0.8 portion and 0.9 portion or the range value between any two. Wherein, the anti-settling agent can improve the suspension property of the cracking carbon black in water.
The preservative may take any value from 0.05 to 2 parts by weight, including but not limited to any one of 0.08, 0.1, 0.5, 0.8, 1, 1.3, 1.5, 1.8 or any range therebetween.
The defoamer may take any of 0.05 to 2 parts by weight, including but not limited to any of 0.08, 0.1, 0.5, 0.8, 1, 1.3, 1.5, 1.8 parts, or any range therebetween.
Preferably, the thermal cracking carbon black aqueous suspension of waste tires comprises the following components in parts by weight:
90 to 95 portions of cracking carbon black slurry, 0.1 to 3 portions of surfactant, 0.1 to 2 portions of viscosity reducer, 0.1 to 0.8 portion of anti-settling agent, 0.1 to 1 portion of preservative and 0.1 to 1 portion of defoaming agent.
Preferably, the solid content of the cracking carbon black slurry is 20-50%; including but not limited to, a point value of any one of 23%, 25%, 30%, 35%, 40%, 45%, 48%, or a range value between any two.
Preferably, the cracked carbon black slurry has a pH of 7 to 9, including but not limited to the values of any one of 7.3, 7.5, 7.8, 8, 8.2, 8.4, 8.5, 8.8, or a range between any two.
Preferably, the carbon black obtained after cracking the waste tires is subjected to iron removal treatment and crushing treatment.
In some embodiments of the present invention, the method for preparing cracked carbon black slurry comprises: removing large particle impurities from carbon black obtained after cracking of waste tires by using a vibrating screen with the size of 4mm, and then removing iron for the first time to remove iron slag to obtain a primary iron-removing material; crushing the primary de-ironing material by crushing equipment, and then performing secondary de-ironing to obtain a secondary de-ironing material; and uniformly mixing the secondary de-ironing material and water to obtain the cracking carbon black slurry.
Preferably, the scrap tires comprise scrap all-steel tires and/or scrap semi-steel tires. Preferably, the primary iron removal and the secondary iron removal are performed using an iron remover. Preferably, the crushing plant comprises at least one of a jaw crusher, an impact crusher and a vertical mill.
Preferably, the secondary de-ironing material and the water are mixed in a high-speed mixer; more preferably, the mixing is specifically: stirring at high speed for 10-60 min (including but not limited to the point value of any one of 15min, 20min, 30min, 40min, 50min, 55min or the range value between any two) at the rotating speed of 1000-3000 r/min (including but not limited to the point value of any one of 1300r/min, 1500r/min, 1800r/min, 2000r/min, 2300r/min, 2500r/min, 2800r/min or the range value between any two).
Preferably, the D97 particle diameter of the carbon black subjected to the iron removal treatment and the crushing treatment is 100-300 mu m; including but not limited to any one of 120, 150, 180, 200, 220, 250, 270 μm or a range between any two.
The fineness of the cracked carbon black obtained after crushing treatment is higher than that of cracked carbon black powder in the prior art, so that the iodine absorption value, the coloring strength, the total specific surface area and the oil absorption value of the cracked carbon black are improved.
Preferably, the iodine absorption value of the carbon black subjected to the iron removal treatment and the crushing treatment is 100-150 g/kg; including but not limited to, dot values of any one of 105g/kg, 110g/kg, 115g/kg, 120g/kg, 125g/kg, 130g/kg, 135g/kg, 140g/kg, 145g/kg, or range values between any two.
Preferably, the color intensity of the carbon black subjected to the iron removal treatment and the crushing treatment is 80-100%; including but not limited to, a point value of any one of 83%, 85%, 88%, 90%, 92%, 95%, 98%, or a range value between any two.
Preferably, the total specific surface area of the carbon black subjected to the iron removal treatment and the crushing treatment is (50 to 70) × 10 3 m 2 (iv) kg; including but not limited to 52 x 10 3 m 2 /kg、55×10 3 m 2 /kg、58×10 3 m 2 /kg、60×10 3 m 2 /kg、62×10 3 m 2 /kg、65×10 3 m 2 /kg、68×10 3 m 2 A point value of any one of/kg or a range value between any two.
Wherein the total specific surface area refers to the sum of the external surface area of the powder particles and the surface area of the internal pore structure per unit mass.
Preferably, the oil absorption value of the carbon black subjected to the iron removal treatment and the crushing treatment is (60-90). Times.10 - 5 m 3 Kg, including but not limited to 65X 10 -5 m 3 /kg、70×10 -5 m 3 /kg、75×10 -5 m 3 /kg、80×10 -5 m 3 /kg、85×10 -5 m 3 A point value of any one of/kg or a range value between any two.
Preferably, the surfactant comprises at least one of polyoxyethylene (20) sorbitan monooleate (tween 80), heavy alkylbenzene sulfonate (HABS), alkylsulfonate (SAS), sorbitan monostearate (span 60), polyethylene glycol, polyvinyl alcohol, sodium polyacrylate, fatty alcohol polyoxyethylene ether, phenethylphenol polyoxyethylene ether formaldehyde condensate, ammonium polyacrylate and sodium pyrophosphate.
Preferably, the viscosity reducer comprises at least one of sodium hexametaphosphate, sodium pyrophosphate, a dispersing agent NNO, a dispersing agent MF and sodium metaaluminate.
Wherein the diffusion agent NNOAlso known as dispersant NNO, methylene dinaphthalene sodium sulfonate, naphthalene sulfonate formaldehyde condensate and 2-naphthalene sulfonic acid. It is an organic substance with a chemical formula of C 11 H 9 NaO 4 S is easy to dissolve in water and has excellent diffusibility and protective colloid performance.
The dispersing agent MF is also called dispersing agent MF, formaldehyde condensate of methyl sodium naphthalene sulfonate. It is easy to dissolve in water, easy to absorb moisture, non-inflammable, and has excellent diffusivity, heat stability, no permeability and no foaming property, and is acid and alkali resistant, hard water resistant and inorganic salt resistant.
Preferably, the anti-settling agent comprises at least one of xanthan gum, organobentonite, hydroxypropyl guar, fumed silica, sodium carboxymethylcellulose, magnesium aluminum silicate, and polyacrylamide;
preferably, the preservative comprises at least one of sorbic acid, salicylic acid, dimethyl fumarate, sodium benzoate, trichloroisocyanuric acid and sodium diacetate;
preferably, the antifoaming agent includes at least one of dimethicone, glycerin, and polyoxypropylene polyoxyethylene glyceryl ether.
In a second aspect, the present invention provides a method for preparing the aqueous suspension of thermal cracked carbon black from junked tires as described above, comprising the following steps:
the raw materials were mixed and ground.
The preparation method of the thermal cracking carbon black aqueous suspension of the waste tires, which is provided by the invention, is simple and easy to implement, has short process flow, and can realize mass production.
Preferably, the preparation method of the thermal cracking carbon black aqueous suspension of waste tires specifically comprises the following steps:
mixing the pyrolysis carbon black slurry, a surfactant, a viscosity reducer and an anti-settling agent, sequentially performing first grinding and second grinding, then adding a preservative and a defoaming agent, and uniformly mixing to obtain the waste tire pyrolysis carbon black aqueous suspension.
In some embodiments of the invention, the first grinding and the second grinding are both wet grinding.
In some embodiments of the present invention, the cracked carbon black slurry, the surfactant, the viscosity reducer, and the anti-settling agent are mixed uniformly using a high-speed mixer. Preferably, the time of mixing is 10 to 60min, including but not limited to a point value of any one of 15min, 20min, 30min, 40min, 50min, 55min or a range value between any two.
In some specific embodiments of the present invention, after the addition of the preservative and the antifoaming agent, stirring is performed for 10 to 30min (including but not limited to a point value of any one of 12min, 15min, 18min, 20min, 23min, 25min or a range value between any two).
Preferably, the rotation speed of the first grinding and/or the second grinding is 30-12000 r/min, including but not limited to 30r/min, 50r/min, 100r/min, 200r/min, 300r/min, 400r/min, 500r/min, 700r/min, 900r/min, 1000r/min, 1300r/min, 1500r/min, 1800r/min, 2000r/min, 2300r/min, 2500r/min, 2800r/min, 3000r/min, 4000r/min, 5000r/min, 7000r/min, 9000r/min, 10000r/min, 11000r/min, 12000r/min or a range value between any two.
Preferably, the D97 particle size of the solid particles in the first grind to blend mass is between 35 and 60 μm, including but not limited to values at any one of 38 μm, 40 μm, 43 μm, 45 μm, 48 μm, 50 μm, 53 μm, 55 μm, 58 μm, or ranges between any two. The first grinding is carried out until the viscosity of the mixed material is 100-500mpa.s; including but not limited to point values of any one of 150mpa.s, 200mpa.s, 250mpa.s, 300mpa.s, 350mpa.s, 400mpa.s, 450mpa.s, or ranges between any two.
Preferably, the D97 particle size of the solid particles in the second grind to blendstock is between 1 and 5 μm, including but not limited to any one of 1.5 μm, 2 μm, 3 μm, 4 μm, 4.5 μm, or a range therebetween. The second grind is carried out until the viscosity of the mixed material is between 10 and 100mpa.s, including but not limited to any of 20mpa.s, 30mpa.s, 40mpa.s, 50mpa.s, 60mpa.s, 70mpa.s, 80mpa.s, 90mpa.s, or a range therebetween.
In some embodiments of the invention, the first grinding is performed using an in-line emulsion pump, a ball mill, a colloid mill, or other grinding device.
In some embodiments of the present invention, the second grinding is performed using a pin mill, a disc mill, a cell mill, a helical agitator mill, or other grinding device.
In a third aspect, the present invention provides the use of the aqueous suspension of scrap tire thermal cracking carbon black as described above in aqueous paints, aqueous inks and latexes.
The thermal cracking carbon black aqueous suspension of waste tires provided by the invention has the advantages of high solid content, low viscosity, easy dispersion in various aqueous systems and the like, and is suitable to be used as a coloring agent in aqueous ink and paint and used as a reinforcing agent in the latex industry.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention greatly reduces the dust hazard in the production and transportation process by dispersing the carbon black powder obtained after the thermal cracking of the waste tires in the water phase. In the using process, the environmental dust pollution can be reduced through the operation modes of pumping, spraying and the like, and the method is safe and nontoxic.
(2) The thermal cracking carbon black aqueous suspension of waste tires, provided by the invention, has the advantages of high solid content, low viscosity, easiness in dispersion in various aqueous systems, long-time storage and good storage stability.
(3) The preparation method of the thermal cracking carbon black aqueous suspension of the waste tires, which is provided by the invention, is simple and easy to implement, has short process flow, and can realize mass production.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following detailed description, but those skilled in the art will understand that the following described examples are some, not all, of the examples of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of cracking carbon black slurry, 1 part of sorbitan monostearate, 0.8 part of sodium metaaluminate, 0.8 part of sodium carboxymethylcellulose, 0.2 part of trichloroisocyanuric acid and 0.5 part of dimethyl silicone oil.
The cracking carbon black slurry consists of 30 parts of carbon black obtained by cracking waste semi-steel tires and 70 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided in this embodiment comprises the following steps:
(1) Removing large impurities from carbon black obtained after cracking of waste semi-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a primary iron-removing material; crushing the primary de-ironing material by an impact crusher (the frequency of a motor is 45 Hz), and obtaining a secondary de-ironing material after secondary de-ironing is qualified by using an iron remover; the secondary de-ironing material is 156.4 μm in D97 by a laser particle sizer. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 1500r/min for 30min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 30%.
(2) And (2) under the condition of continuously stirring, sequentially adding sorbitan monostearate, sodium metaaluminate and sodium carboxymethylcellulose into the cracking carbon black slurry obtained in the step (1), and continuously stirring for 30min after the addition is finished to obtain mixed slurry.
And conveying the mixed slurry into a primary wet grinding device, namely a ball mill through a pneumatic diaphragm pump for primary grinding, wherein the ball-to-material ratio is 2.2, starting a circulating pump and a stirring motor, the stirring speed of the ball mill is 40r/min, ball-milling until the D97 particle size of solid particles (cracked carbon black) in the first mixed slurry is 42 mu m, and the detection viscosity is 352mpa.s.
And (3) conveying the material subjected to the first grinding into a rod pin type sand mill which is a secondary wet grinding device through a pneumatic diaphragm pump, and performing second grinding, wherein the rotation speed of the sand mill is 2500r/min, the circular grinding is performed for 20min, the material is ground until the D97 particle size of solid particles (cracking carbon black) in a material system is 4.1 mu m, and the detection viscosity is 31mpa.s, so that a mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding trichloroisocyanuric acid and dimethyl silicone oil into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring at the rotating speed of 30r/min for 30min to obtain the waste tire thermal cracking carbon black aqueous suspension.
Example 2
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of cracking carbon black slurry, 2.5 parts of sodium polyacrylate, 1.2 parts of dispersing agent MF, 0.6 part of polyacrylamide, 0.3 part of sodium diacetate and 0.5 part of polyoxypropylene polyoxyethylene glycerol ether.
The cracking carbon black slurry consists of 40 parts of carbon black obtained by cracking waste all-steel tires and 60 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the embodiment comprises the following steps:
(1) Removing large impurities from carbon black obtained after cracking of waste all-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a primary iron-removing material; crushing the primary de-ironing material by an impact crusher (the frequency of a motor is 35 Hz), and obtaining a secondary de-ironing material after secondary de-ironing is qualified by using an iron remover; the secondary de-ironing material is 216.8 μm in D97 by laser particle size analyzer detection. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 2800r/min for 40min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 40%.
(2) And (2) under the condition of continuously stirring, sequentially adding sodium polyacrylate, a dispersing agent MF and polyacrylamide into the cracked carbon black slurry obtained in the step (1), and continuously stirring for 40min after the addition is finished to obtain mixed slurry.
And conveying the mixed slurry into a primary wet grinding device, namely a ball mill through a pneumatic diaphragm pump for primary grinding, wherein the ball-to-material ratio is 2.2, starting a circulating pump and a stirring motor, the stirring speed of the ball mill is 35r/min, and ball-milling until the D97 particle size of solid particles (cracked carbon black) in the first mixed slurry is 51 mu m and the detection viscosity is 412mpa.s.
And (3) conveying the material subjected to the first grinding to a horizontal sand mill which is secondary wet grinding equipment through a pneumatic diaphragm pump, and carrying out second grinding, wherein the rotation speed of the sand mill is 2800r/min, the circular grinding is carried out for 30min, the material is ground until the D97 particle size of solid particles (cracked carbon black) in a material system is 2.8 mu m, and the detection viscosity is 46mpa.s, so that the mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding sodium diacetate and polyoxypropylene polyoxyethylene glycerol ether into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring for 30min at the rotating speed of 30r/min to obtain the waste tire thermal cracking carbon black aqueous suspension.
Example 3
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of pyrolysis carbon black slurry, 0.8 part of fatty alcohol-polyoxyethylene ether, 0.5 part of sodium metaaluminate, 0.7 part of hydroxypropyl guar gum, 0.8 part of trichloroisocyanuric acid and 0.3 part of dimethyl silicone oil.
The cracking carbon black slurry consists of 35 parts of carbon black obtained by cracking waste semi-steel tires and 65 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the embodiment comprises the following steps:
(1) Removing large impurities from carbon black obtained after cracking waste semi-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a first iron-removing material; crushing the primary de-ironing material by a vertical mill (the frequency of a motor is 35 Hz), and performing secondary de-ironing by using an iron remover to obtain a secondary de-ironing material; the D97 of the secondary de-ironing material is 198.7 mu m by the detection of a laser particle sizer. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 1800r/min for 40min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 35%.
(2) And (2) under the condition of continuously stirring, sequentially adding fatty alcohol-polyoxyethylene ether, sodium metaaluminate and hydroxypropyl guar gum into the cracking carbon black slurry obtained in the step (1), and continuously stirring for 30min after the addition is finished to obtain mixed slurry.
And conveying the mixed slurry into a primary wet grinding device, namely a pipeline type emulsification pump through a pneumatic diaphragm pump, and carrying out first grinding, wherein the rotating speed of the pipeline type emulsification pump is 12000r/min, the grinding is carried out until the D97 particle size of solid particles (cracked carbon black) in the first mixed slurry is 57 mu m, and the detection viscosity is 287mpa.s.
And (3) conveying the material subjected to the first grinding into a secondary wet grinding device, namely a cell mill grinder, through a pneumatic diaphragm pump, and carrying out second grinding, wherein the rotating speed of the cell mill grinder is 250r/min, the cell mill grinder is circularly ground for 20min, the material is ground until the D97 particle size of solid particles (cracked carbon black) in a material system is 1.8 mu m, and the detection viscosity is 19mpa.s, so that a mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding trichloroisocyanuric acid and dimethyl silicone oil into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring at the rotating speed of 30r/min for 30min to obtain the thermal cracking carbon black aqueous suspension of the waste tires.
Example 4
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of cracking carbon black slurry, 2.8 parts of phenethyl phenol polyoxyethylene ether formaldehyde condensate, 1.5 parts of sodium hexametaphosphate, 0.5 part of xanthan gum, 0.4 part of salicylic acid and 0.15 part of polyoxypropylene polyoxyethylene glycerol ether.
The cracking carbon black slurry consists of 24 parts of carbon black obtained after cracking waste semi-steel tires, 24 parts of carbon black obtained after cracking waste all-steel tires and 52 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided in this embodiment comprises the following steps:
(1) Removing large impurities from the carbon black obtained after cracking the waste semi-steel tires and the carbon black obtained after cracking the waste all-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a primary iron-removing material; crushing the primary de-ironing material by a jaw crusher (the frequency of a motor is 30 Hz), and obtaining a secondary de-ironing material after secondary de-ironing is qualified by using a de-ironing device; the secondary de-ironing material is 261.4 μm in D97 by laser particle size analyzer detection. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 2000r/min for 60min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 48%.
(2) And (2) under the condition of continuously stirring, sequentially adding a phenethyl phenol polyoxyethylene ether formaldehyde condensate, sodium hexametaphosphate and xanthan gum into the cracking carbon black slurry obtained in the step (1), and continuously stirring for 30min after the addition is finished to obtain mixed slurry.
And (2) conveying the mixed slurry into a primary wet grinding device, namely a colloid mill, through a pneumatic diaphragm pump, carrying out first grinding, starting a circulating pump and a motor, wherein the rotating speed of the colloid mill is 10800r/min, ball-milling until the D97 particle size of solid particles (pyrolysis carbon black) in the first mixed slurry is 38 mu m, and detecting viscosity is 432mpa.s.
And (3) conveying the material subjected to the first grinding to secondary wet grinding equipment, namely a disc type sand mill, through a pneumatic diaphragm pump, and carrying out second grinding, wherein the rotational speed of sanding is 2350r/min, the material is circularly ground for 40min, the material is ground until the D97 particle size of solid particles (cracked carbon black) in a material system is 1.2 mu m, and the detection viscosity is 49mpa.s, so that the mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding salicylic acid and polyoxypropylene polyoxyethylene glycerol ether into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring for 30min at the rotating speed of 30r/min to obtain the waste tire thermal cracking carbon black aqueous suspension.
Example 5
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of cracking carbon black slurry, 0.8 part of sodium polyacrylate, 0.3 part of dispersing agent NNO, 0.5 part of hydroxypropyl guar gum, 0.15 part of dimethyl fumarate and 0.12 part of glycerol.
The cracking carbon black slurry consists of 25 parts of carbon black obtained by cracking waste all-steel tires and 75 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the embodiment comprises the following steps:
(1) Removing large impurities from carbon black obtained after cracking of waste all-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a primary iron-removing material; crushing the primary deironing material by a vertical grinding mill (the frequency of a motor is 40 Hz), and obtaining a secondary deironing material after secondary deironing is qualified by using an iron remover; the D97 of the secondary de-ironing material is 213.2 μm by a laser particle size analyzer. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 1200r/min for 25min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 25%.
(2) And (2) under the condition of continuously stirring, sequentially adding sodium polyacrylate, a dispersing agent NNO and hydroxypropyl guar gum into the cracked carbon black slurry obtained in the step (1), and continuously stirring for 30min after the addition is finished to obtain mixed slurry.
And conveying the mixed slurry into a primary wet grinding device, namely a ball mill through a pneumatic diaphragm pump, carrying out first grinding, wherein the ball-to-material ratio is 2, starting a circulating pump and a stirring motor, the stirring speed of the ball mill is 30r/min, carrying out ball milling until the D97 particle size of solid particles (cracked carbon black) in the first mixed slurry is 39 μm, and the detection viscosity is 202mpa.s.
And (3) conveying the material subjected to the first grinding into a rod pin type sand mill serving as secondary wet grinding equipment through a pneumatic diaphragm pump, and performing second grinding, wherein the rotation speed of the sand mill is 2000r/min, the circular grinding is performed for 30min, the material is ground until the D97 particle size of solid particles (cracked carbon black) in a material system is 2.8 mu m, and the detection viscosity is 18mpa.s, so that a mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding dimethyl fumarate and glycerol into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring for 30min at the rotating speed of 30r/min to obtain the waste tire thermal cracking carbon black aqueous suspension.
Example 6
The embodiment provides a thermal cracking carbon black aqueous suspension of waste tires, which comprises the following components in parts by weight: 100 parts of pyrolysis carbon black slurry, 1.8 parts of polyoxyethylene (20 EO) sorbitan monooleate, 1.1 parts of sodium pyrophosphate, 0.4 part of fumed silica, 0.3 part of sodium diacetate and 0.4 part of simethicone.
The cracking carbon black slurry consists of 10.67 parts of carbon black obtained after cracking waste semi-steel tires, 21.33 parts of carbon black obtained after cracking waste all-steel tires and 68 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the embodiment comprises the following steps:
(1) Removing large impurities from the carbon black obtained after cracking the waste semi-steel tires and the carbon black obtained after cracking the waste all-steel tires by a vibrating screen with the size of 4mm, and then removing iron for the first time by using an iron remover to remove iron slag to obtain a primary iron-removing material; crushing the primary de-ironing material by an impact crusher (the frequency of a motor is 35 Hz), and obtaining a secondary de-ironing material after secondary de-ironing is qualified by using an iron remover; the secondary de-ironing material is 241.2 μm in D97 by a laser particle size analyzer. And adding the secondary de-ironing material and water into a high-speed mixer, stirring at a high speed of 1250r/min for 40min, and uniformly mixing to obtain the cracking carbon black slurry with the solid content of 32%.
(2) Under the condition of continuous stirring, sequentially adding polyoxyethylene (20 EO) sorbitan monooleate, sodium pyrophosphate and gas-phase silica into the cracked carbon black slurry obtained in the step (1), and continuously stirring for 40min after the addition is finished to obtain mixed slurry.
And conveying the mixed slurry into a primary wet grinding device, namely a colloid mill, through a pneumatic diaphragm pump, carrying out first grinding, starting a circulating pump and a stirring motor, wherein the rotating speed of the colloid mill is 12400r/min, ball-milling until the D97 particle size of solid particles (cracked carbon black) in the first mixed slurry is 38 mu m, and detecting the viscosity of the first mixed slurry is 292mpa.s.
And (3) conveying the material subjected to the first grinding to a secondary wet grinding device, namely a spiral stirring mill, through a pneumatic diaphragm pump, and carrying out second grinding, wherein the rotational speed of the sand grinding is 340r/min, the circular grinding is carried out for 60min, the material is ground until the D97 particle size of solid particles (cracked carbon black) in a material system is 3.2 mu m, and the detection viscosity is 21mpa.s, so that the mixed material subjected to the first grinding and the second grinding is obtained.
(3) And (3) adding sodium diacetate and simethicone into the mixed material obtained in the step (2) after the first grinding and the second grinding, and mixing and stirring at the rotating speed of 30r/min for 30min to obtain the thermal cracking carbon black aqueous suspension of the waste tires.
Comparative example 1
The composition and preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided in this comparative example are basically the same as those of example 1, and the differences are only that: sorbitan monostearate was replaced by water but the amount was kept constant and was still 1 part.
Comparative example 2
The composition and preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the comparative example are basically the same as those of the example 1, and the differences are only that: the sodium metaaluminate is replaced by water, but the amount is still 0.8 part while keeping the amount unchanged.
Comparative example 3
The composition and preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided by the comparative example are basically the same as those of the example 1, and the differences are only that: the sodium carboxymethylcellulose was replaced with water, but the amount thereof was still 0.8 part, keeping the amount unchanged.
Comparative example 4
The composition and preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided in this comparative example are basically the same as those of example 1, and the differences are only that: 1 part of sorbitan monostearate was replaced by 1 part of water and 0.8 part of sodium carboxymethylcellulose was replaced by 0.8 part of water.
Comparative example 5
The aqueous suspension of thermal cracking carbon black of junked tires provided by the comparative example comprises the following components in parts by weight: 100 parts of cracking carbon black slurry, 6 parts of sorbitan monostearate, 3 parts of sodium metaaluminate, 2 parts of sodium carboxymethylcellulose, 3 parts of trichloroisocyanuric acid and 3 parts of dimethyl silicone oil. The cracking carbon black slurry consists of 30 parts of carbon black obtained by cracking waste semi-steel tires and 70 parts of water.
The preparation method of the thermal cracking carbon black aqueous suspension of junked tires provided in this comparative example is the same as that of example 1.
Comparative example 6
The commercial cracking carbon black aqueous filler suspension is produced by a new material company of Xuancheng, the model is XCH-LJTH25W.
Examples of the experiments
The total specific surface area, oil absorption value, iodine absorption value and coloring strength of the secondary deironing material (i.e., the cracked carbon black powder after the deironing treatment and the crushing treatment) prepared in the step (1) of each of the above examples and comparative examples were measured, and the results are shown in table 1 below.
Table 1 Performance test results of the secondary iron-removing materials prepared from the respective groups
Meanwhile, the pH and solid content values of the cracked carbon black slurry obtained in step (1) of each of the above examples and comparative examples, the D97 particle size and viscosity values of the first and second milled mixed materials obtained in step (2), and the settling of the thermally cracked aqueous suspension of waste tire carbon black obtained in step (3) were measured, and the results are shown in table 2 below.
The method for testing the sedimentation condition (stability) of the thermal cracking carbon black aqueous suspension of the waste tires comprises the following steps: 100ml of the suspension was placed in a 150ml measuring cylinder, and the sample was left at a temperature of 25 ℃ and a relative humidity of 50% to test for three months of sedimentation, where √ denotes no sedimentation, and X denotes sedimentation.
TABLE 2 pH, solids content, viscosity, D97 particle size and sedimentation results
The test results show that the thermal cracking carbon black aqueous suspension of the waste tires prepared by the invention has low viscosity, higher solid content, larger pore volume, narrower particle size distribution, excellent suspension performance and good storage stability.
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that the above embodiments are merely illustrative of the technical solution of the present invention and are not restrictive; those of ordinary skill in the art will understand that: modifications may be made to the above-described embodiments, or equivalents may be substituted for some or all of the features thereof without departing from the spirit and scope of the present invention; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; it is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (10)
1. The waste tire thermal cracking carbon black aqueous suspension is characterized by comprising the following components in parts by weight:
85-100 parts of cracking carbon black slurry, 0.05-5 parts of surfactant, 0.05-3 parts of viscosity reducer, 0.05-1 part of anti-settling agent, 0.05-2 parts of preservative and 0.05-2 parts of defoaming agent;
the cracking carbon black slurry mainly comprises carbon black obtained by cracking waste tires and water.
2. The aqueous suspension of thermally cracked carbon black of junked tires as claimed in claim 1, wherein the aqueous suspension of thermally cracked carbon black of junked tires comprises the following components in parts by weight:
90 to 95 portions of cracking carbon black slurry, 0.1 to 3 portions of surfactant, 0.1 to 2 portions of viscosity reducer, 0.1 to 0.8 portion of anti-settling agent, 0.1 to 1 portion of preservative and 0.1 to 1 portion of defoamer.
3. The aqueous suspension of thermal cracking carbon black from waste tires according to claim 1, wherein the solid content of the cracked carbon black slurry is 20% to 50%;
preferably, the pH of the cracked carbon black slurry is 7 to 9.
4. The aqueous suspension of thermal cracking carbon black from waste tires as claimed in claim 1, wherein the carbon black obtained by cracking the waste tires is processed by iron removal and crushing;
preferably, the D97 particle diameter of the carbon black after the iron removal treatment and the crushing treatment is 100-300 mu m;
preferably, the iodine absorption value of the carbon black subjected to the iron removal treatment and the crushing treatment is 100-150 g/kg;
preferably, the color intensity of the carbon black subjected to the iron removal treatment and the crushing treatment is 80-100%;
preferably, the total specific surface area of the carbon black subjected to the iron removal treatment and the crushing treatment Is composed of (50～70)×10 3 m 2 /kg；
Preferably, the oil absorption value of the carbon black subjected to the iron removal treatment and the crushing treatment is (60-90). Times.10 -5 m 3 /kg。
5. The aqueous suspension of thermal cracking carbon black of waste tires, as claimed in claim 1, wherein the surfactant comprises at least one of polyoxyethylene sorbitan monooleate, heavy alkylbenzene sulfonate, alkylsulfonate, sorbitan monostearate, polyethylene glycol, polyvinyl alcohol, sodium polyacrylate, fatty alcohol polyoxyethylene ether, phenethylphenol polyoxyethylene ether formaldehyde condensate, ammonium polyacrylate and sodium pyrophosphate;
preferably, the viscosity reducer comprises at least one of sodium hexametaphosphate, sodium pyrophosphate, a diffuser NNO, a diffuser MF and sodium metaaluminate;
preferably, the anti-settling agent comprises at least one of xanthan gum, organobentonite, hydroxypropyl guar, fumed silica, sodium carboxymethylcellulose, magnesium aluminum silicate, and polyacrylamide.
6. The aqueous suspension of scrap tire thermally cracked carbon black according to claim 1, wherein said preservatives include at least one of sorbic acid, salicylic acid, dimethyl fumarate, sodium benzoate, trichloroisocyanuric acid and sodium diacetate;
preferably, the antifoaming agent includes at least one of dimethicone, glycerin, and polyoxypropylene polyoxyethylene glyceryl ether.
7. The process for preparing the aqueous suspension of carbon black from thermal cracking of junked tires as claimed in any one of claims 1 to 6, comprising the steps of:
the raw materials were mixed and ground.
8. The method for preparing the aqueous suspension of thermal cracked carbon black from waste tires as claimed in claim 7, wherein the method for preparing the aqueous suspension of thermal cracked carbon black from waste tires comprises the following steps:
mixing the pyrolysis carbon black slurry, a surfactant, a viscosity reducer and an anti-settling agent, sequentially performing first grinding and second grinding, adding a preservative and a defoaming agent, and uniformly mixing to obtain the waste tire pyrolysis carbon black aqueous suspension.
9. The method for preparing the aqueous suspension of thermal cracking carbon black from waste tires as claimed in claim 8, wherein the solid particles in the first grinding to mixed material have a D97 particle size of 35-60 μm and a viscosity of 100-500mpa.s;
preferably, the solid particles in the second grinding to a mixed material have a D97 particle size of 1-5 μm and a viscosity of 10-100mpa.s.
10. Use of the aqueous suspension of thermal cracked carbon black of junked tires as claimed in any one of claims 1 to 6 in aqueous paints, aqueous inks and latexes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211450609.XA CN115746628A (en) | 2022-11-18 | 2022-11-18 | Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211450609.XA CN115746628A (en) | 2022-11-18 | 2022-11-18 | Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115746628A true CN115746628A (en) | 2023-03-07 |
Family
ID=85333029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211450609.XA Pending CN115746628A (en) | 2022-11-18 | 2022-11-18 | Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115746628A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752391A (en) * | 2016-11-23 | 2017-05-31 | 北京麦尔化工科技有限公司 | Aqueous carbon black color paste of a kind of feature of environmental protection for latex product and preparation method thereof |
| CN107236329A (en) * | 2016-03-29 | 2017-10-10 | 河南沐桐环保产业有限公司 | A kind of method that junked tire prepares carbon black |
| CN110283616A (en) * | 2019-06-22 | 2019-09-27 | 中化建工程集团南方建设投资有限公司 | A kind of waste tire thermal cracking regeneration carbon black modified material and modified pitch |
| CN112322076A (en) * | 2020-11-04 | 2021-02-05 | 中南大学 | Method for preparing carbon black |
| CN114085566A (en) * | 2021-12-07 | 2022-02-25 | 安徽进化硅纳米材料科技有限公司 | Aqueous silicon dioxide suspension, preparation method and application thereof |
| CN115073940A (en) * | 2022-06-21 | 2022-09-20 | 安徽固瑞特新材料科技有限公司 | Production process flow for improving dispersion performance of pyrolysis carbon black for rubber |
-
2022
- 2022-11-18 CN CN202211450609.XA patent/CN115746628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236329A (en) * | 2016-03-29 | 2017-10-10 | 河南沐桐环保产业有限公司 | A kind of method that junked tire prepares carbon black |
| CN106752391A (en) * | 2016-11-23 | 2017-05-31 | 北京麦尔化工科技有限公司 | Aqueous carbon black color paste of a kind of feature of environmental protection for latex product and preparation method thereof |
| CN110283616A (en) * | 2019-06-22 | 2019-09-27 | 中化建工程集团南方建设投资有限公司 | A kind of waste tire thermal cracking regeneration carbon black modified material and modified pitch |
| CN112322076A (en) * | 2020-11-04 | 2021-02-05 | 中南大学 | Method for preparing carbon black |
| CN114085566A (en) * | 2021-12-07 | 2022-02-25 | 安徽进化硅纳米材料科技有限公司 | Aqueous silicon dioxide suspension, preparation method and application thereof |
| CN115073940A (en) * | 2022-06-21 | 2022-09-20 | 安徽固瑞特新材料科技有限公司 | Production process flow for improving dispersion performance of pyrolysis carbon black for rubber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103819760B (en) | A kind of processing method preparing high-performance carbon black rubber master batch | |
| CN103435820B (en) | Pre-treatment method of asphalt and spherical graphite negative electrode material coated by using asphalt | |
| CN103496724B (en) | The preparation method of a kind of nano alumina sol and gel | |
| CN109517195A (en) | A kind of method that wet process is kneaded preparation carbon black rubber master batch | |
| CN107051339A (en) | A kind of fiber reinforced SiO2Aeroge and preparation method thereof | |
| CN110028073A (en) | A kind of preparation method of polymolecularity precipitated silica | |
| CN106807882A (en) | Inorganic precoated sand antiquated sand regeneration decomposition helps liquid and antiquated sand renovation process | |
| CN109879303A (en) | A kind of preparation method of the nanometer calcium carbonate of the dispersion of stable suspersion in aqueous solution | |
| CN107603346A (en) | A kind of water-based resin-free color paste | |
| WO2023097549A1 (en) | Hydrophobic white carbon black rubber reinforcing agent, preparation method therefor, and application thereof | |
| CN112552928A (en) | Environment-friendly soil curing agent | |
| CN104497616B (en) | A kind of commercialization processing method of environment-friendly type nano level reducing dye | |
| CN106007589A (en) | Preparation method of light-weight and high-strength concrete containing nano-silica | |
| CN115746628A (en) | Thermal cracking carbon black aqueous suspension of waste tires, and preparation method and application thereof | |
| CN108658130B (en) | Method for simultaneously preparing iron oxide and silicon dioxide aerogel from iron tailings | |
| CN106634198A (en) | A method of preparing carbon pen core printing ink | |
| CN102585567A (en) | Method for preparing ultrafine inorganic powder dispersion | |
| CN108409513A (en) | A kind of method of ammonium salt induction crystallization | |
| CN101045826A (en) | Water-soluble dispersible pigment and its production method | |
| CN104263073B (en) | Pure water plastic gravure black ink and preparation method thereof | |
| CN114751417B (en) | Preparation method of silica aerogel powder | |
| CN113956685B (en) | Method for steam soaking granulation of carbon black | |
| CN109896519A (en) | A kind of quick controllable method for preparing of three-dimensional grapheme microballoon for absorption | |
| CN114516630B (en) | Method for improving dispersibility of carbon nano tube | |
| CN110256911A (en) | A kind of preparation process of water nano metallic paint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |