Environment-friendly high-efficiency modified asphalt waterproof roll mixing device and process

Abstract

The invention discloses an environment-friendly high-efficiency modified asphalt waterproof roll mixing device and process. The device comprises an asphalt preheating kettle, a tire powder mixing kettle, a filling material mixing kettle, an SBS modifier mixing kettle and a modified asphalt mixing kettle which are connected with one another through a pipeline, a heating device and a stirring device are arranged inside each of the asphalt preheating kettle, the tire powder mixing kettle, the filling material mixing kettle, the SBS modifier mixing kettle and the modified asphalt mixing kettle, the tire powder mixing kettle, the filling material mixing kettle and the SBS modifier mixing kettle are parallelly connected through a mixing pipe, a discharging port of the asphalt preheating kettle is connected with feeding ports of the tire powder mixing kettle, the filling material mixing kettle and the SBS modifier mixing kettle respectively, and discharging ports of the tire powder mixing kettle, the filling material mixing kettle and the SBS modifier mixing kettle are connected with a feeding port of the modified asphalt mixing kettle respectively. By using the device, various materials are separately stirred and mixed, and powder and oil are avoided forming a mixture; each material is dispersed more uniformly, so that stirring time is shortened effectively.

Description

technical field [0001] The invention belongs to the technical field of waterproof coiled materials, and in particular relates to an environmentally friendly and efficient batching device and process for modified asphalt waterproof coiled materials. Background technique [0002] In recent years, with the rapid development of the domestic construction industry, modified asphalt waterproofing membranes have been widely used in the waterproofing membrane industry. A complete production process of modified asphalt waterproof membrane includes several unit systems, including heating system, asphalt storage system, modified batching system, coil forming system, and flue gas environmental protection treatment system. [0003] Among them, in the batching system, the modified material generally includes an oil system composed of asphalt and base oil, and a powder system formed by rubber powder, styrene-based thermoplastic elastomer (SBS for short) modifier and filler. In the traditio...

AI Technical Summary

Problems solved by technology

[0004] In addition, the traditional batching process is to mix all the raw materials together, heat and stir. The disadvantage of this is that all the materials are gathered together. Due to the increase in the weight of the materials, the stirring load is large, and it is more difficult to achieve high-speed stirring.

Therefore, there has always been a problem with the melting of SBS, the modifier of traditional ingredients. SBS does not exist in the asphalt in the form of a network structure, but in the form of small SBS particles, resulting in poor dispersion of SBS.

All the time, the performance of the samples in the laboratory trial with the same ratio is higher than that of the finished product in the workshop, that is, because the high-speed dispersing equipment in the laboratory trial can complete the dispersion of SBS well, and the mixing and dispersing of the finished product in the workshop is done well. Not perfect; in the traditional batching process, the powder is put in concentratedly. After the powder is put in, the liquid above the batching kettle becomes thicker and the fluidity becomes poor. The powder is concentrated on the top of the kettle, and it takes a long time to stir completely. Dispersion, prone to problems of uneven material dispersion and too long stirring time

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