Asphalt mixture stirring equipment and technology for adding reclaimed materials in high proportions

Abstract

The invention discloses asphalt mixture stirring equipment and technology for adding reclaimed materials in high proportions. The technology comprises the following steps: (1) native aggregates and reclaimed fine materials are delivered into a reclaimed mixture drying drum so as to be dried, wrapped and mixed, the hot mixture is delivered into a hot aggregate vibrating screen classifier through ahot material elevator so as to be screened, and all levels of screened hot aggregates respectively fall into corresponding compartments of a hot aggregate temporary storage bin; (2) reclaimed coarse materials are delivered into a reclaimed coarse material drying drum through a cold material elevator so as to be dried, and the dried reclaimed coarse materials vertically fall into a reclaimed hot material temporary storage bin directly; (3) reclaimed hot materials vertically fall into a reclaimed hot material metering bin so as to be metered, and the metered reclaimed hot materials vertically fall into a stirrer; all levels of hot aggregates vertically fall into a hot aggregate metering bin respectively so as to be accurately metered, and all levels of metered hot aggregates are obliquely delivered into the stirrer through an oblique chute; and all materials are fully stirred and mixed through the stirrer. The equipment and the technology disclosed by the invention increase the adding proportions of the reclaimed materials.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture mixing, and in particular relates to an asphalt mixture mixing equipment and process with high proportion of recycled materials added. Background technique [0002] With the development of asphalt pavement projects in China, most of the asphalt pavements that were built and opened to traffic in the early stage have entered the stage of major and medium repairs, and the resulting waste asphalt mixture (Reclaimed Asphalt Pavement, or RAP) is increasing year by year. As China's asphalt pavement regeneration technology started late, the policy promotion is not strong, and the current regeneration process is gradually taking shape. At present, there are two application forms of thermal regeneration technology commonly used in China: one is the in-situ type, and the other is the factory-mixed type. In-situ thermal regeneration equipment is also called regenerative train. Its characteristic is t...

AI Technical Summary

Problems solved by technology

Traditional mixing equipment, the mixing tank located in the main building is mainly used for mixing new materials, and the recycled materials are usually added to the mixing tank through the chute as a side tower, which limits the percentage of recycled materials that can be added

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