CN101381519B - Production technology of high stability asphalt by modification of waste tyre rubber powder - Google Patents
Production technology of high stability asphalt by modification of waste tyre rubber powder Download PDFInfo
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- CN101381519B CN101381519B CN2008101973224A CN200810197322A CN101381519B CN 101381519 B CN101381519 B CN 101381519B CN 2008101973224 A CN2008101973224 A CN 2008101973224A CN 200810197322 A CN200810197322 A CN 200810197322A CN 101381519 B CN101381519 B CN 101381519B
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- 239000000843 powder Substances 0.000 title claims abstract description 110
- 239000010920 waste tyre Substances 0.000 title claims abstract description 97
- 239000010426 asphalt Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 230000004048 modification Effects 0.000 title claims description 36
- 238000012986 modification Methods 0.000 title claims description 36
- 238000005516 engineering process Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000004913 activation Effects 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 17
- 238000010008 shearing Methods 0.000 claims description 14
- 230000003213 activating effect Effects 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000010257 thawing Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000011081 inoculation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 61
- 238000005303 weighing Methods 0.000 description 11
- 238000011068 loading method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a process for producing waste-tire rubber powder modified asphalt, in particular to a process for producing high-stability waste-tire rubber powder modified asphalt. The process is characterized in that the surface of waste-tire rubber powder is first activated; then the activated waste-tire rubber powder is added to hot asphalt, fully stirred, swollen, sheared, ground and then injected into a development tank for inoculation reaction, so as to obtain stable waste-tire rubber powder modified asphalt; the production course of the process belongs to chemical-physical action; the activated waste-tire rubber powder and the asphalt are subjected to crosslinking reaction and form a stably linked molecular structure; and the modified asphalt is stable in performance and capable of long-term storage. The high-stability waste-tire rubber powder modified asphalt has the characteristic of good stability.
Description
Technical field
The present invention relates to a kind of production technique of asphalt by modification of waste tyre rubber powder.
Background technology
The waste tyre rubber powder modifying asphalt is applied to highway and urban road surfaces has following characteristics:
1. penetration degree reduces, and softening temperature improves, and viscosity increases, and the bituminous high-temperature stability improves, and the high temperature rutting resistance strengthens;
2. improve the bituminous low-temperature performance, improve the low-temperature cracking-resistance of compound;
3. strengthen adhesivity, the rubber powder modified asphalt film thickness of building stones surface adhesion increases, and the bituminous pavement anti-water damage property improves;
4. improve the ageing resistance and the anti-fatigue performance of compound;
5. reduce sound pollution;
6. reduce and eliminate damaged tire and stack the public hazards cause, the rational secondary resource utilization of getting back simultaneously obtains the double effects of resource and environment.
The Technology of producing at present both at home and abroad asphalt by modification of waste tyre rubber powder is: directly the waste tyre rubber powder more than fineness 30 orders is put into by pitch weight 10%～20% proportional quantity in 160～180 ℃ the heated bitumen that premix stirs and pitch rubber powder compound is cut, ground to power, the formation product was grown in reaction during the rubber powder pitch that will cut then, grinds was injected into and grows jar.
The Technology of existing production asphalt by modification of waste tyre rubber powder all be the waste tyre rubber powder with certain fineness in pitch, carry out high temperature melt bloated, physics is sheared, grind and disperse and stir, because the waste tyre rubber powder unreactiveness is bigger, its physics cut, grind and grow in substantially with pitch reaction or be faint reaction, so-called reaction is combining with hydrogen bond and Intermolecular Forces between waste tyre rubber powder and the pitch just also, this reactive force is more weak, be a kind of mixture of inferior stable state, therefore the trend of segregation, advolution, reduction surface energy is arranged.There is phenomenon pockety in the waste rubber tyre powder physical particles that suspends in the rubber powder pitch in dispersed with stirring and high temperature motion, so the asphalt by modification of waste tyre rubber powder quality instability of producing; The asphalt by modification of waste tyre rubber powder that this modifying asphalt production unit explained hereafter that only depends on physics to cut, grind waste rubber tyre powder of while goes out belongs to the mix suspending system structure, and it has the characteristics of easy laminated segregation, storage property difference.The asphalt by modification of waste tyre rubber powder that existing installation is produced storage time all can not be oversize, generally is no more than 24 hours, and preferably on-the-spot modification is made and on-the-spot the use, and in engineering is used big, the poor stability of its performance discreteness.
Summary of the invention
The object of the present invention is to provide a kind of production technique of high stability asphalt by modification of waste tyre rubber powder, the high stability asphalt by modification of waste tyre rubber powder of this explained hereafter has the characteristics of good stability.
To achieve these goals, technical scheme of the present invention is: the production technique of high stability asphalt by modification of waste tyre rubber powder is characterized in that it comprises the steps:
1). waste tyre rubber powder is carried out activation treatment, the waste tyre rubber powder after obtaining activating;
2). by the waste tyre rubber powder after the activation is pitch weight 10～20%, chooses waste tyre rubber powder and pitch after the activation, and pitch is melted, standby; Pitch mixing with the waste tyre rubber powder after the activation and after melting is carried out modification to pitch, gets high stability asphalt by modification of waste tyre rubber powder.
Describedly waste tyre rubber powder carried out activation treatment be: by the RV rubber reclaiming agent be 30～100 order fineness waste tyre rubber powder weight 0.3～10%, choose the waste tyre rubber powder of RV rubber reclaiming agent and 30～100 order fineness, standby; With the waste tyre rubber powder of 30～100 order fineness and RV rubber reclaiming agent at normal temperatures and pressures, be dosed in the high-speed mixer;
High-speed mixer stirred 1.5～10 minutes to mix greater than 800 rev/mins rotating speed, and controlled temperature is 20 ℃～100 ℃, made waste tyre rubber powder surface active in the high-speed mixer, the waste tyre rubber powder after obtaining activating.
The present invention carries out activation treatment to the surface of waste tyre rubber powder earlier, waste tyre rubber powder after will activating then add in the heated bitumen fully stir, swelling, shearing, grinding, inject the growth jar then and breed reaction, obtain stable asphalt by modification of waste tyre rubber powder, the production process of this production technique belongs to chemistry---physical action, waste tyre rubber powder after the activation and pitch have carried out crosslinking reaction and have formed stable link molecular structure, its stable performance and can standing storage.
The invention has the beneficial effects as follows:
1) activation treatment (promptly activating by the regeneration to the bigger waste tyre rubber powder of unreactiveness) is carried out on the surface of waste tyre rubber powder, can make the waste tyre rubber powder after the activation link reaction with pitch generation molecular linkage, can make modifying asphalt growth molecule curl structure like this, thereby reach the even chemical combination bonding state of waste tyre rubber powder and bituminous, guarantee the stability and the long-time stability of putting that stores of the quality of production; Promptly the high stability asphalt by modification of waste tyre rubber powder of this explained hereafter has the characteristics of good stability.
2), the pitch after waste tyre rubber powder after employing will activate and the thawing drops into respectively in the premixing tank, carries out high speed shear and stirred 3～300 minutes under 160～210 ℃ temperature; Waste tyre rubber powder after pitch and the activation promptly fully stirs in premixing tank, swelling, shearing and molecular linkage link chemical reaction, can bring into play the task performance of next procedure high speed shear so to greatest extent.
3) by band agitating vane in the expansion drum and with the circulation shear of pipeline high-speed shearing machine, colloidal mill, grind waste tyre rubber powder and bituminous speed of response after having guaranteed the compound dispersed uniform and having accelerated activation.
4) two expansion drums processing and reciprocal tank switching continuously can guarantee the continuity of producing, and can make mixture particle sheared fully, grind, to reach the purpose that homodisperse and reaction are merged.
5) owing to dispose vertical and high-speed shearing, pipeline high-speed shearing machine and colloidal mill in the technology, waste tyre rubber powder after pitch and the activation is carried out substep to be repeated with circulation to shear, grind, thereby make after the activation waste tyre rubber powder with bituminous mixing process in increase the specific surface area of waste rubber tyre powder to greatest extent, make waste tyre rubber powder and pitch after the activation that chemical crosslink reaction take place better, so that the waste tyre rubber powder after the activation is uniformly dispersed with pitch formation, the metastable molecule link structure that mixes; The release of carbon black in the reaction of waste tyre rubber powder after the activation is in addition played the anti-aging effect of enhancing to high stability asphalt by modification of waste tyre rubber powder.
6) compound injects and to breed jar, and stirring at low speed 15-120 minutes under 120～180 ℃ temperature (breed jar place an agitating vane) increases the dispersing uniformity of waste rubber tyre powder and pitch reactant, the permanent stability of the assurance quality of production to greatest extent.
Description of drawings
Fig. 1 is the structural representation of the production system of asphalt by modification of waste tyre rubber powder of the present invention;
Fig. 2 is the structural representation of regenerator charging machine of the present invention;
Fig. 3 is the structural representation of the present invention's first self-conveyor feed;
Fig. 4 is the structural representation of high-speed mixer of the present invention;
Fig. 5 is the fluorescent Photomicrograph (300 times) of the asphalt by modification of waste tyre rubber powder of existing explained hereafter;
Fig. 6 is the fluorescent Photomicrograph (400 times) of the high stability asphalt by modification of waste tyre rubber powder of explained hereafter of the present invention;
Number in the figure: 1-first transferpump, 2-pitch strainer, 3-pitch gauger, 4-asphalt delivery pipe, 5-second self-conveyor feed, 6-waste tyre rubber powder loading hopper, 7-first self-conveyor feed, 8-regenerator charging machine, 9-weighing hopper, the 10-Weighing system, 11-high-speed mixer, 12-are scraped the wall machine, 13-vertical and high-speed shears, 14-premixing tank, 15-pneumavalve, the 16-first material pipe, 17-second transferpump, the 18-second material pipe, 19-the 3rd material pipe, 20-the 4th material pipe, 21-the 5th material pipe, 22-first stirrer, 23 second stirrers, 24-colloidal mill, 25-the 6th material pipe, 26-first expansion drum, 27-the 7th material pipe, 28-second expansion drum, 29-the 8th material pipe, 30-the 3rd transferpump, 31-pipeline high-speed shearing machine, 32-breeds jar, 33-the 9th material pipe, 34-the tenth material pipe, 35-the 11 material pipe, 36-the 3rd stirrer, 37-regenerator feed bin, 38-motor, 39-screw-blade, the 40-discharge port, the 41-screw-blade, 42-motor, 43-discharge port, the 44-housing, the 45-agitating vane, 46-turning axle, 47-motor, 48-discharge port valve, 49-promotes cylinder.
Embodiment
The production technique of high stability asphalt by modification of waste tyre rubber powder, it comprises the steps:
1). waste tyre rubber powder is carried out activation treatment: by the RV rubber reclaiming agent be 30～100 order fineness waste tyre rubber powder weight 0.3～10%, choose the waste tyre rubber powder of RV rubber reclaiming agent and 30～100 order fineness, standby; With the waste tyre rubber powder of 30～100 order fineness and RV rubber reclaiming agent at normal temperatures and pressures, be dosed in the high-speed mixer;
High-speed mixer stirred 1.5～10 minutes to mix greater than 800 rev/mins rotating speed, and controlled temperature is 20 ℃～100 ℃, made waste tyre rubber powder surface active in the high-speed mixer, the waste tyre rubber powder after obtaining activating;
2). by the waste tyre rubber powder after the activation is pitch weight 10～20%, chooses waste tyre rubber powder and pitch after the activation, and pitch is melted, standby; Pitch mixing with the waste tyre rubber powder after the activation and after melting, pitch being carried out modification: (1). the pitch after waste tyre rubber powder after will activating and the thawing drops in the premixing tank respectively, under 160～210 ℃ temperature, carry out high speed shear and stirred 3～300 minutes, get compound;
(2). with carrying out high speed shear after the compound stirring, grind then; Circulate 2～5 times;
(3). jar is bred in ground compound injection, and stirring at low speed is 15-120 minutes under 120～180 ℃ temperature, and compound is grown, and gets high stability asphalt by modification of waste tyre rubber powder.
The described high speed shear of step (1) stirs to being provided with the vertical and high-speed shears in the premixing tank, and the motor speed of vertical and high-speed shears is greater than 800 rev/mins.
Step (2) is specially: the logical charge tube of compound, transferpump are injected in the expansion drum and stir, compound after the stirring leads to charge tube, transferpump is injected into the pipeline high-speed shearing machine and carries out high speed shear, and described high speed shear is that the motor speed of pipeline high-speed shearing machine is greater than 800 rev/mins; Logical then charge tube is sent in the colloidal mill and is ground, and the pitch after waste tyre rubber powder after stopping to activate and the thawing feeds intake in premixing tank, and the logical charge tube of the compound after the grinding is sent in the premixing tank; Repeat above-mentioned 2～5 times.Described expansion drum is in parallel 2.
The described stirring at low speed of step (3) is that the motor speed that breeds the stirrer in the jar is 100～800 rev/mins.
RV rubber reclaiming agent (or claiming rubber reclaiming agent), waste tyre rubber powder, pitch are the commercially available prod.
High-speed mixer, vertical and high-speed shears, pipeline high-speed shearing machine, colloidal mill are existing installation.
High stability asphalt by modification of waste tyre rubber powder test of products result:
1) microcosmic molecule structure change:
Product by invented technology production, the link structure of its waste tyre rubber powder and pitch generation molecular reaction, Fig. 5 is the fluorescence photo of the asphalt by modification of waste tyre rubber powder of existing explained hereafter, in the photo as can be seen pitch only be surperficial swelling to rubber powder, do not have molecule link phenomenon between them, rubber powder granule and pitch are admixtures.Fig. 6 is the fluorescence photo of the high stability asphalt by modification of waste tyre rubber powder of invented technology production, because physics and chemical action, the rubber powder homodisperse, and rubber powder and pitch react and have formed the molecular chain bond structure, this molecule chain link microtexture helps the quality stability of performance of modified bitumen, thus stopped rubber powder granule be suspended in the skewness phenomenon of being heated in the pitch when moving mutually and put in layering and isolating phenomenon appear.
2) test of technical feature in long-term the storing:
By a large amount of tests to the invented technology product, products production steady quality and along with the increase of putting the storage time, the penetration degree of high stability asphalt by modification of waste tyre rubber powder, softening temperature, ductility three big the key technical indexes do not change substantially, and this has fully reached the effect of product extended storage stability.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, realize the production system (being the production system of high stability asphalt by modification of waste tyre rubber powder) of above-mentioned production technique, it comprises asphalt modification device, waste tyre rubber powder activating apparatus, the feeding mouth place of asphalt modification device is provided with the waste tyre rubber powder activating apparatus, and the discharge port of waste tyre rubber powder activating apparatus communicates with the feeding mouth of asphalt modification device.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the waste tyre rubber powder activating apparatus comprises second self-conveyor feed 5, waste tyre rubber powder loading hopper 6, first self-conveyor feed 7, regenerator charging machine 8, weighing hopper 9, Weighing system 10, high-speed mixer 11; The discharge port of waste tyre rubber powder loading hopper 6 is positioned at the feeding mouth place of first self-conveyor feed 7, the discharge port of first self-conveyor feed 7 communicates with the feeding mouth of weighing hopper 9, the discharge port of regenerator charging machine 8 communicates with the feeding mouth of weighing hopper 9, weighing hopper 9 is arranged on (Weighing system adopts existing known technology, weighing weight of object) on the Weighing system 10; The discharge port of weighing hopper 9 communicates with the feeding mouth of high-speed mixer 11, and the discharge port of high-speed mixer 11 is positioned at the feeding mouth place of second self-conveyor feed 5, and the discharge port of second self-conveyor feed 5 communicates with the feeding mouth of the premixing tank 14 of asphalt modification device.
As shown in Figure 1, the asphalt modification device comprises first transferpump 1, pitch gauger 3, asphalt delivery pipe 4, vertical and high-speed shears 13, premixing tank 14, pneumavalve 15, the first material pipe 16, second transferpump 17, the second material pipe 18, the 3rd material pipe 19, first stirrer 22, colloidal mill 24, the 6th material pipe 25, first expansion drum 26, the 7th material pipe 27, the 3rd transferpump 30, pipeline high-speed shearing machine 31, breeds jar the 32, the 9th a material pipe 33, the tenth material pipe the 34, the 11 material pipe 35;
The discharge port of asphalt delivery pipe 4 communicates with the feeding mouth of premixing tank 14, and asphalt delivery pipe 4 is provided with first transferpump 1, pitch strainer 2, pitch gauger 3; Be provided with the wall machine 12 of scraping, vertical and high-speed shears 13 in the premixing tank 14, the feeding mouth of the first material pipe 16 communicates with the discharge port of premixing tank 14 bottoms, the discharge port of the first material pipe 16 is connected with the feeding mouth of the 9th material pipe 33, the first material pipe 16 is provided with pneumavalve 15, second transferpump 17, the discharge port of the 9th material pipe 33 communicates with the feeding mouth of first expansion drum 26, and the 9th material pipe 33 is provided with pneumavalve; First expansion drum 26 is provided with first stirrer 22, the agitating vane of first stirrer 22 is positioned at first expansion drum 26, the feeding mouth of the 7th material pipe 27 is connected with the discharge port of first expansion drum, 26 bottoms, the discharge port of the 7th material pipe 27 is connected with the feeding mouth of the 11 material pipe 35, and the 7th material pipe 27 is provided with pneumavalve; The discharge port of the 11 material pipe 35 is connected with the feeding mouth of pipeline high-speed shearing machine 31, and the 3rd transferpump 30 is set on the 11 material pipe 35; The feeding mouth of the 6th material pipe 25 is connected with the discharge port of pipeline high-speed shearing machine 31, and the discharge port of the 6th material pipe 25 is connected with the feeding mouth of the tenth material pipe 34, the second material pipe 18 respectively, on the 6th material pipe 25 colloidal mill 24 is set; The discharge port of the tenth material pipe 34 is connected with the feeding mouth that breeds jar 32, and the tenth material pipe 34 is provided with pneumavalve; Described jar 32 agitating vanes that are provided with the 3rd stirrer 36, the three stirrers of breeding are positioned at and breed jars 32; The discharge port of the second material pipe 18 communicates with the feeding mouth of premixing tank 14, and the discharging end on the second material pipe 18 is provided with pneumavalve; The feeding mouth of the 3rd material pipe 19 is connected with the second material pipe 18, and the discharge port of the 3rd material pipe 19 is connected with the feeding mouth of first expansion drum 26.
The discharge port of the described first material pipe 16 (by T-valve) simultaneously is connected with the feeding mouth of the 4th material pipe 20, and the discharge port of the 4th material pipe 20 communicates with the feeding mouth of second expansion drum 28, and the 4th material pipe 20 is provided with pneumavalve; Second expansion drum 28 is provided with second stirrer 23, the agitating vane of second stirrer 23 is positioned at second expansion drum 28, the feeding mouth of the 8th material pipe 29 is connected with the discharge port of second expansion drum, 28 bottoms, the discharge port of the 8th material pipe 29 is connected with the feeding mouth of the 11 material pipe 35, and the 8th material pipe 29 is provided with pneumavalve; The feeding mouth of the 5th material pipe 21 is connected with the second material pipe 18, and the discharge port of the 5th material pipe 21 is connected with the feeding mouth of second expansion drum 28.
As shown in Figure 2, regenerator charging machine 8 comprises regenerator feed bin 37, housing, motor 38, screw-blade 39, turning axle; In the housing is cavity, one end of housing is provided with regenerator feed bin 37, the other end of housing is provided with discharge port 40, regenerator feed bin 37, discharge port 40 communicate with cavity respectively, an end that is positioned at regenerator feed bin 37 is fixed with motor 38, the output shaft of motor 38 links to each other with turning axle, and turning axle is provided with screw-blade 39, and turning axle, screw-blade 39 are positioned at cavity.Motor 38 rotations drive screw-blade 39 rotations, and material is sent discharge port 40 from regenerator feed bin 37.
As shown in Figure 3, first self-conveyor feed 7 comprises screw-blade 41, turning axle, motor 42, housing; In the housing is cavity, one end of housing is provided with feeding mouth, the other end of housing is provided with discharge port 43, feeding mouth, discharge port 43 communicate with cavity respectively, an end that is positioned at discharge port 43 is fixed with motor 42, the output shaft of motor 42 links to each other with turning axle, and turning axle is provided with screw-blade 41, and turning axle, screw-blade 41 are positioned at cavity.Motor 42 rotations drive screw-blade 41 rotations, and material is sent discharge port 43 from feeding mouth.
As shown in Figure 4, described high-speed mixer 11 comprises housing 44, agitating vane 45, turning axle 46, motor 47, discharge port valve 48, promotes cylinder 49; In the housing 44 is cavity, and the upper end of housing is a feeding mouth, and the lower end of housing is a discharge port; Motor 47 is fixed on the housing 44, and the output shaft of motor 44 links to each other with turning axle, and turning axle is provided with agitating vane 45, and turning axle, agitating vane 45 are positioned at cavity; The discharge port place of housing is hinged with discharge port valve 48, discharge port valve 48 and the expansion link that promotes cylinder 49 hinged (realizing control) as open and close to feeding mouth, and the cylinder body and the housing 44 that promote cylinder 49 are hinged.Motor 47 high speed rotating drive agitating vane 45 high speed rotating, and material is carried out high-speed mixing; The rotating speed of motor 47 is 800～3000 rev/mins.
Waste tyre rubber powder is poured in the waste tyre rubber powder loading hopper 6, and the RV rubber reclaiming agent is poured in the regenerator feed bin 37 of regenerator charging machine 8, and the pitch after the thawing is sent into premixing tank 14 by asphalt delivery pipe 4.Second self-conveyor feed 5, first self-conveyor feed 7, regenerator charging machine 8 play convey materials respectively.All pipelines (asphalt delivery pipe 4 and the first material Guan Zhidi, 11 material pipes) all are bilayer structures, interior road by Production Flow Chart the path of process, bypass road is the heat conduction oil duct, and the heat conduction oil duct is used for material (modifying asphalt) heat tracing to process, and pipeline is provided with adiabator layer outward.Premixing tank 14, first expansion drum 26, second expansion drum 28, to breed jars 32 all be bilayer structure, has the heat conduction oil reservoir too, and same inner edge is the production space, is outward the heat-conducting oil heating layer, and outermost is an adiabator layer; Thermal oil heats by heat-conducting oil furnace, by recycle pump thermal oil is flowed in total system, makes total system keep the temperature of setting.
Claims (1)
1. the production technique of high stability asphalt by modification of waste tyre rubber powder is characterized in that it comprises the steps:
1). waste tyre rubber powder is carried out activation treatment: by the RV rubber reclaiming agent be 30～100 order fineness waste tyre rubber powder weight 0.3～10%, choose the waste tyre rubber powder of RV rubber reclaiming agent and 30～100 order fineness, standby; With the waste tyre rubber powder of 30～100 order fineness and RV rubber reclaiming agent at normal temperatures and pressures, be dosed in the high-speed mixer;
High-speed mixer stirred 1.5～10 minutes to mix greater than 800 rev/mins rotating speed, and controlled temperature is 20 ℃～100 ℃, made waste tyre rubber powder surface active in the high-speed mixer, the waste tyre rubber powder after obtaining activating;
2). by the waste tyre rubber powder after the activation is pitch weight 10～20%, chooses waste tyre rubber powder and pitch after the activation, and pitch is melted, standby; Pitch being carried out modification: (1). the pitch after waste tyre rubber powder after will activating and the thawing drops into respectively in the premixing tank, carries out high speed shear and stirred 3～300 minutes under 160～210 ℃ temperature, gets compound;
(2). the logical charge tube of compound, transferpump are injected in the expansion drum and stir, and the compound after the stirring leads to charge tube, transferpump is injected into the pipeline high-speed shearing machine and carries out high speed shear; Logical then charge tube is sent in the colloidal mill and is ground, and the pitch after waste tyre rubber powder after stopping to activate and the thawing feeds intake in premixing tank, and the logical charge tube of the compound after the grinding is sent in the premixing tank; With the technological cycle of step (2) 2～5 times;
(3). ground compound injected breeds jar, under 120～180 ℃ temperature stirring at low speed 15-120 minute, compound is grown, high stability asphalt by modification of waste tyre rubber powder;
The described high speed shear of step (1) stirs to being provided with the vertical and high-speed shears in the premixing tank, and the motor speed of vertical and high-speed shears is greater than 800 rev/mins;
Described high speed shear is that the motor speed of pipeline high-speed shearing machine is greater than 800 rev/mins;
Described expansion drum is in parallel 2;
The described stirring at low speed of step (3) is that the motor speed that breeds the stirrer in the jar is 100～800 rev/mins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101973224A CN101381519B (en) | 2008-10-21 | 2008-10-21 | Production technology of high stability asphalt by modification of waste tyre rubber powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101973224A CN101381519B (en) | 2008-10-21 | 2008-10-21 | Production technology of high stability asphalt by modification of waste tyre rubber powder |
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| Publication Number | Publication Date |
|---|---|
| CN101381519A CN101381519A (en) | 2009-03-11 |
| CN101381519B true CN101381519B (en) | 2010-10-13 |
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| CN2008101973224A Expired - Fee Related CN101381519B (en) | 2008-10-21 | 2008-10-21 | Production technology of high stability asphalt by modification of waste tyre rubber powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104448457B (en) * | 2014-12-12 | 2016-06-22 | 上海仁聚新材料科技有限公司 | Rubber and plastic composite asphalt modifier, rubber and plastic compound modified asphalt and preparation method thereof |
| CN106746926A (en) * | 2016-12-13 | 2017-05-31 | 江苏天诺道路材料科技有限公司 | Separate type plantmix warms the preparation method of reclaimed asphalt mixture |
| CN106638230A (en) * | 2016-08-31 | 2017-05-10 | 天津领先正华能源科技发展有限公司 | Process for preparing modified asphalt |
| CN108273414A (en) * | 2017-12-26 | 2018-07-13 | 上海浦东路桥沥青材料有限公司 | Colored asphalt production equipment and method |
| CN108276786A (en) * | 2018-01-24 | 2018-07-13 | 杨人凤 | A kind of coarse granule rubber asphalt and preparation method thereof for severe cold area |
| RU2716434C1 (en) * | 2019-06-19 | 2020-03-11 | Юрий Николаевич Потокин | Method for making bitumen-rubber composition |
| CN111647280A (en) * | 2020-07-09 | 2020-09-11 | 新疆路桥建设集团有限公司 | Active rubber powder modified asphalt and preparation method thereof |
| CN111978560B (en) * | 2020-07-16 | 2022-12-20 | 长沙理工大学 | Rubber modified asphalt preparation facilities |
| CN112646383A (en) * | 2020-12-21 | 2021-04-13 | 中铁七局集团第三工程有限公司 | Preparation method of high-performance stable PPA (polyphthalamide) and SBS (styrene butadiene styrene) composite modified asphalt |
| CN113416570A (en) * | 2021-06-28 | 2021-09-21 | 河北交科材料科技有限公司 | High-efficiency environment-friendly modified asphalt development tank |
-
2008
- 2008-10-21 CN CN2008101973224A patent/CN101381519B/en not_active Expired - Fee Related
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| CN101381519A (en) | 2009-03-11 |
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