CN1664011A - Use of natural asphalt product with high melting point in modification of petroleum asphalt - Google Patents
Use of natural asphalt product with high melting point in modification of petroleum asphalt Download PDFInfo
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- CN1664011A CN1664011A CN 200410021928 CN200410021928A CN1664011A CN 1664011 A CN1664011 A CN 1664011A CN 200410021928 CN200410021928 CN 200410021928 CN 200410021928 A CN200410021928 A CN 200410021928A CN 1664011 A CN1664011 A CN 1664011A
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Abstract
The invention discloses the application of high-fusion-point native pitch product in oil pitch modifying as a modifier. The invention is characterized in that it demands the product that possess different fusion point and can fuse at oil pitch temperature below 190 DEG C, processes relevant grain size and fluxing method: for native pitch with fusion-point between 200~260 DEG C, the grain size is not more than 85um, using the stirring method for fusion; for the fusion-point between 260~380 DEG C, the grain size is not more than 65um, using the stirring method; for the fusion-point between 260~380 DEG C, the grain size is not more than 850um, using the mixed fluxing method. The advantage of the invention is that putting the product into the oil pitch for fusion using the method offered above according to the factor of grain size after knowing the native pitch fusion-point; and the method is simple, process easy, no pollution and can improve the modified oil pitch quality and save the expense of road surfacing.
Description
Technical field
The present invention relates to a kind of high-melting-point rock asphalt goods as properties-correcting agent, the usefulness in petroleum asphalt modified is answered, and exactly is as petroleum asphalt modified dose, in the road bitumen of surfacing and the application in the buildings waterproof pitch.
Background technology
Rock asphalt, i.e. " at the naturally occurring pitch of occurring in nature " (the standard SH/T0652-1998 of petroleum department).Rock asphalt can be divided into viscid bitumen and gilsonite.The general oil length of viscid bitumen is higher, with it as a kind of comprehensive fuel and to extract lubricating oil, oil fuel, coke hydrocarbon source raw material be valuable.And the major ingredient of natural gilsonite mostly is bituminous matter, colloid or mineral bitumen matrix, and the present nonhydrocarbon components such as kerogen of unknown its structure still, and its utility value is in the performance history.The high-melting-point rock asphalt refers to that fusing point surpasses 200 ℃ rock asphalt, it is a kind of well behaved petroleum asphalt modified dose or title modification agent, yet it Heating temperature that petroleum pitch allows (≯ 190C) under, can not fuse in petroleum pitch by stirring, thereby not reach the purpose of modified oil pitch.In recent years, China's import natural rock asphalt in North America and lake, Trinida rock asphalt, be used for the modification of important traffic highway petroleum pitch such as the 2nd ring road in Beijing, the road surface effect of making is very good.From then on caused the development interest of domestic natural gilsonite as petroleum asphalt modified dose.China western part rock asphalt that is richly stored with, all there is natural gilsonite ore deposit in Xinjiang, Qinghai, Sichuan, Hunan, Yunnan and Guizhou.In theory, go as long as natural gilsonite can fuse in the petroleum pitch, just can play modifying function, its effect size is according to the composition of rock asphalt and matrix pitch and addition and different.Present problem is: how with fusing point at the high-melting-point rock asphalt more than 200 ℃, fuse into to modification temperature in the matrix petroleum pitch below 190 ℃.
Summary of the invention
The objective of the invention is to: provide can be with fusing point 200 ℃-380 ℃ high-melting-point rock asphalt goods as properties-correcting agent, be applied in the modification of petroleum pitch.
The objective of the invention is to realize by the enforcement following technical proposals:
A kind of high-melting-point rock asphalt goods are as properties-correcting agent, application in petroleum asphalt modified, it is characterized in that: for the different rock asphalt of fusing point, in the petroleum pitch temperature below 190 ℃ of regulation, can fuse as properties-correcting agent, require this rock asphalt goods, have corresponding fusion granularity and melting method.
The fusion granularity is meant: the high-melting-point rock asphalt is melted in the petroleum pitch of described temperature, the grinding particle size that these rock asphalt goods must have, definitely say so and pulverize the weighted average footpath that obtains, it can adopt BT-1500 type centrifugal type particles distribution instrument to test.Hereinafter will fuse granularity and be called rock asphalt goods granularity.
Corresponding fusion granularity and melting method are meant:
A, for the rock asphalt of fusing point at 200 ℃-260 ℃, as petroleum asphalt modified dose goods granularity be ≯ 85um, and it fused in the petroleum asphalt modified temperature of stipulating with paddling process.
B, for the rock asphalt of fusing point at 260 ℃-380 ℃, as petroleum asphalt modified dose goods granularity be ≯ 65um, and it fused in the petroleum asphalt modified temperature of stipulating with paddling process.
C, for the rock asphalt goods of fusing point at 260 ℃-380 ℃, be ≯ 850um in the petroleum asphalt modified temperature of stipulating, to fuse as petroleum asphalt modified dose goods granularity with mixing fusion method.
The rock asphalt goods of various goods granularities will be produced by disintegrating apparatus.Because the rock asphalt mineral aggregate is the thermo-sensitivity raw material, different rock asphalt mineral density, hardness and fusing point are all different, when therefore pulverizing, especially during superfine grinding, should select disintegrating apparatus at each ore deposit characteristic.Equipment used has:
1, impact grinder
As ACM type impact grinder, can reach below the 40um the grinding particle size in rock asphalt ore deposit, for low-melting rock asphalt ore deposit, crushing effect is poor.
2, jet mill
The rock asphalt breeze can be broken to 10um, in addition thinner.
3, stir mill
Can be effectively that the rock asphalt breeze is levigate, the fine granularity of wearing into can be less than 20um.
4, high pressure homogenate jet pulverizer
Be suitable for for containing the breeze that ash is few, hardness is little in the rock asphalt ore deposit, grinding particle size can reach below the um.
5, colloidal mill
The breeze and the liquid that have certain fineness with opposing are sheared dispersion, and further fine grinding has effect to breeze.JM180AW type colloidal mill can mix natural drop breeze levigately under heated condition with other polymer liquid material, and be fused to the latter.
In addition, also have ball mill, vibration mill, Raymond mill etc. also to can be used for the in small, broken bits of rock asphalt mineral aggregate.Pulverization principle in conjunction with aforesaid device is used, or with stage equipment coupling better effects if.
Described rock asphalt goods are fused to the melting method in the petroleum pitch, adopt two kinds of paddling process and mixing fusion methods, and the explanation of these two kinds of methods is stipulated by national sector standard JTJ063-98.
The paddling process flow process:
Petroleum pitch is heated to 160 ℃-190 ℃, be 200 ℃-260 ℃, the rock asphalt goods of granularity ≯ 85um again with fusing point, or fusing point is 260 ℃-380 ℃, the rock asphalt goods of granularity ≯ 65um, puts into petroleum pitch and carries out heated and stirred, until fusing into modifying asphalt fully.
Mixing fusion method flow process:
Petroleum pitch is heated to 160 ℃-190 ℃, be 260 ℃-380 ℃, the rock asphalt goods of granularity ≯ 850um again with fusing point, put into petroleum pitch and carry out heated and stirred, put into shearing of shearing device or colloidal mill or the dispersion of glue mill again, and then return and carry out heated and stirred, shear again or the glue mill, so come and go and carry out until fusing into modified oil pitch fully.
These two kinds of melting method scope of application broads, and complementary action is arranged.
The invention has the advantages that:, just can produce the rock asphalt goods, and, goods be fused in petroleum pitch according to goods grain size parameter provided by the invention with the melting method that provides as long as measure the fusing point of rock asphalt.It is simply suitable to have method, processing ease, non-environmental-pollution, obviously improves outstanding features such as modified oil pitch quality.At economic aspect,,, thereby can save the making expense on road surface greatly more less than the rock asphalt goods of import because rock asphalt tooling cost provided by the invention is less than petroleum pitch.
Description of drawings
Fig. 1 be the rock asphalt of 260 ℃ of fusing points, goods granularity 18.24um as petroleum asphalt modified dose, be melted in process flow sheet in the petroleum pitch with paddling process.
Fig. 2 be the rock asphalt of 305 ℃ of fusing points, goods granularity 17.67um as petroleum asphalt modified dose, be melted in the process flow sheet of petroleum pitch with paddling process.
Fig. 3 is that 305 ℃ of fusing points, goods granularity 830um rock asphalt are as petroleum asphalt modified dose, with the process flow sheet of mixing (glue mill) method fusion petroleum pitch.
Fig. 4 be the rock asphalt of 305 ℃ of fusing points, goods granularity 830um as petroleum asphalt modified dose, be melted in the process flow sheet of petroleum pitch with mixing (shearing) method.
Embodiment
The rock asphalt goods of 260 ℃ of example 1 fusing points, goods granularity 18.24um, as petroleum asphalt modified dose, its operating procedure is as follows:
Get 90
#Matrix petroleum pitch is in heating and stirring tank, and its weight of admixture 5% has the rock asphalt goods of above-mentioned parameter again, heated and stirred after 40 minutes under 180 ℃ of-190 ℃ of temperature, i.e. all fusions and make modifying asphalt.
The rock asphalt goods of 305 ℃ of example 2 fusing points, goods granularity 17.67um, as petroleum asphalt modified dose, its operating procedure is as follows:
Get 90
#Matrix petroleum pitch is in heating and stirring tank, and its weight of admixture 5% has the rock asphalt goods of above-mentioned parameter again, heated and stirred after 90 minutes under 180 ℃ of-190 ℃ of temperature, i.e. all fusions and make modifying asphalt.
The rock asphalt goods of 305 ℃ of example 3 fusing points, goods granularity 830um, as petroleum asphalt modified dose, used glue mill mixing operating procedure is as follows:
Get 90
#Matrix petroleum pitch is in heating and stirring tank, its weight of admixture 10% has the rock asphalt goods of above-mentioned parameter again, and heated and stirred is after 20 minutes under 180 ℃ of-190 ℃ of temperature, and material returns stirred pot behind colloidal mill glue mill, so circulation is 4 times, i.e. all fusions and make modifying asphalt.
The rock asphalt goods of 305 ℃ of example 4 fusing points, goods granularity 830um, as petroleum asphalt modified dose, used shearing mixing operating procedure is as follows:
Get 90
#Matrix petroleum pitch is in the high-speed stirring shears, and its weight of admixture 100% has the rock asphalt goods of above-mentioned parameter again, under 180 ℃ of-190 ℃ of temperature powerful stir shear 60 minutes after, i.e. all fusions and make modifying asphalt.
Following table has provided with above-mentioned 4 the embodiment modifying asphalts of international industry standard test and the performance comparison result of matrix pitch.
| Test event | 90# matrix petroleum pitch | Embodiment 1 modifying asphalt | Embodiment 2 modifying asphalts | Embodiment 3 modifying asphalts | Embodiment 4 modifying asphalts | |||
| Penetration degree 10 -1mm ????(25℃、100g、5s) | ????87 | ????79 | ????70 | ????53 | ????51 | |||
| Ductility cm (15 ℃, 5cm/im) | ????111.2 | ????97.2 | ????82.5 | ????44.0 | ????39.5 | |||
| Ductility cm (5 ℃, 5cm/im) | ????7.2 | ????6.7 | ????6.0 | ????4.5 | ????4.2 | |||
| Softening temperature ℃ (ring and ball method) | ????48.5 | ????54.4 | ????55.00 | ????57.8 | ????57.4 | |||
| Kinetic viscosity PaS (60 ℃) | ????135 | ????925 | ????1100 | ????1610 | ????1570 | |||
| Brittle point ℃ (not Lars method) | ????-12.3 | ????-13.0 | ????-13.4 | ????-14.5 | ????-14.0 | |||
| Adhesivity grade (mineral aggregate: granite) | Water seaoning | 3 grades | 5 grades | 5 grades | 5 grades | 5 grades | ||
| Water-boiling method | 3 grades | 5 grades | 5 grades | 5 grades | 5 grades | |||
This is shown listed data and shows: the modifying asphalt of embodiment is than matrix pitch, and its penetration degree reduces, softening temperature improves, and the resistance to elevated temperatures of modifying asphalt is strengthened; 50 ℃ of low-temperature ductilities change little, brittle point decline, show that the resistance to low temperature of modifying asphalt strengthens; The temperature head of softening temperature and brittle point increases, and shows that the plastic zone of modifying asphalt enlarges, and the temperature-sensitive performance improves; Kinetic viscosity and adhesivity grade increase substantially, and the surface adhesion power of modifying asphalt is significantly strengthened.
Claims (4)
1, a kind of high-melting-point rock asphalt goods are as properties-correcting agent, application in petroleum asphalt modified, it is characterized in that: for the different rock asphalt of fusing point, in the petroleum pitch temperature below 190 ℃ of regulation, can fuse and make properties-correcting agent, require these rock asphalt goods to have corresponding articles granularity and melting method.
2, according to the described high-melting-point rock asphalt of claim 1 goods as properties-correcting agent, application in petroleum asphalt modified, it is characterized in that: for the rock asphalt of fusing point at 200 ℃-260 ℃, goods granularity as petroleum asphalt modified dose is ≯ 85um, and with paddling process it is fused in the petroleum asphalt modified temperature of regulation.
3, according to the described high-melting-point rock asphalt of claim 1 goods as properties-correcting agent, application in petroleum asphalt modified, it is characterized in that: for the rock asphalt of fusing point at 260 ℃-380 ℃, goods granularity as petroleum asphalt modified dose is ≯ 65um, and with paddling process it is fused in the petroleum asphalt modified temperature of regulation.
4, according to the described high-melting-point rock asphalt of claim 1 goods as properties-correcting agent, application in petroleum asphalt modified, it is characterized in that:, for the rock asphalt goods of fusing point at 260 ℃-380 ℃, goods granularity as petroleum asphalt modified dose is ≯ 850um to fuse in the petroleum asphalt modified temperature of regulation with mixing fusion method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021928 CN1664011A (en) | 2004-03-01 | 2004-03-01 | Use of natural asphalt product with high melting point in modification of petroleum asphalt |
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|---|---|---|---|
| CN 200410021928 CN1664011A (en) | 2004-03-01 | 2004-03-01 | Use of natural asphalt product with high melting point in modification of petroleum asphalt |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256162B (en) * | 2008-03-20 | 2011-04-13 | 山东省交通科学研究所 | Method for measuring natural ganoine bitumen softening point |
| CN102532923A (en) * | 2011-12-30 | 2012-07-04 | 谢术英 | Granular modified asphalt and preparation method thereof |
| CN102838875A (en) * | 2012-09-19 | 2012-12-26 | 北京建筑工程学院 | Preparation method for improving asphalt viscosity |
| CN102876061A (en) * | 2012-10-16 | 2013-01-16 | 山东高速建设材料有限公司 | Asphalt material for road as well as preparation method and preparation device of asphalt material |
-
2004
- 2004-03-01 CN CN 200410021928 patent/CN1664011A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256162B (en) * | 2008-03-20 | 2011-04-13 | 山东省交通科学研究所 | Method for measuring natural ganoine bitumen softening point |
| CN102532923A (en) * | 2011-12-30 | 2012-07-04 | 谢术英 | Granular modified asphalt and preparation method thereof |
| CN102838875A (en) * | 2012-09-19 | 2012-12-26 | 北京建筑工程学院 | Preparation method for improving asphalt viscosity |
| CN102838875B (en) * | 2012-09-19 | 2015-07-01 | 北京建筑大学 | Preparation method for improving asphalt viscosity |
| CN102876061A (en) * | 2012-10-16 | 2013-01-16 | 山东高速建设材料有限公司 | Asphalt material for road as well as preparation method and preparation device of asphalt material |
| CN102876061B (en) * | 2012-10-16 | 2014-12-10 | 山东高速建设材料有限公司 | Asphalt material for road as well as preparation method and preparation device of asphalt material |
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