Asphalt RAP fine grading surface strengthening equipment

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0595-22557155

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nonnon@fjlnkj.com

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DS pure sand making equipment

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Asphalt RAP fine grading surface strengthening equipment

>> for asphalt recycled milling materials, in order to better add and utilize the recycled materials, the proportion is from 20% to 80%. it is necessary to solve the asphalt stripping, aggregate classification, removal of false particles and false gradation, and stabilize the asphalt content and activity on the aggregate surface, so as to improve the gradation stability of recycled materials, the effective integration and penetration of old and new asphalt, reduce the variability of mixtures, solve the asphalt and meet the requirements of various technical indexes of asphalt concrete, therefore, it is necessary to carry out moderate asphalt stripping, classification, elimination of false particles and false gradation of RAP, so the recycled material recycling equipment is developed.

>> the equipment can be designed in various processes according to RAP source attributes and processing and use requirements, such as simple classification without stripping, simple stripping and dividing into three blocking materials, fine stripping and dividing into five blocking materials (0-3 or 0-5mm can be used as asphalt mortar for patching project or partial cold addition and asphalt extraction), and can also be finely crushed into asphalt powder for centrifugal extraction and application to new energy battery materials after modification.

>> according to the aging degree of asphalt, the general aging is more easy to peel off due to the decrease of viscosity, the new asphalt is difficult to peel off, and the low temperature is easier to peel off than the high temperature.

According to the aging degree of RAP asphalt, the softness of primary asphalt is different, and the viscosity or ductility should be appropriately reduced.

The main methods of stripping are: physical stripping, chemical stripping (organic solvent washing, centrifugal extraction, heating distillation extraction of asphalt), biological stripping method, physical method is relatively lower cost. The physical flexible peeling method is described below.

>> this scheme mainly adopts the mode of first decoration and then peeling into first peeling and then grading (which can be realized at the same time), and is designed according to the needs. (If RAP original materials are better, some fake particles can be removed by directly scattering and grading and moderately stripping wells.) The target finished product is 2-3 blocking materials, which are generally used in the middle and bottom layers or stable layers of expressways, municipal projects, etc. The equipment is composed of raw material silo, super large material rejection device, iron separator of material separation system, conveying, stripping machine, extension machine, dust removal and control, etc.